editor_tests.rs

    1use super::*;
    2use crate::{
    3    JoinLines,
    4    code_context_menus::CodeContextMenu,
    5    edit_prediction_tests::FakeEditPredictionProvider,
    6    linked_editing_ranges::LinkedEditingRanges,
    7    scroll::scroll_amount::ScrollAmount,
    8    test::{
    9        assert_text_with_selections, build_editor,
   10        editor_lsp_test_context::{EditorLspTestContext, git_commit_lang},
   11        editor_test_context::EditorTestContext,
   12        select_ranges,
   13    },
   14};
   15use buffer_diff::{BufferDiff, DiffHunkSecondaryStatus, DiffHunkStatus, DiffHunkStatusKind};
   16use collections::HashMap;
   17use futures::{StreamExt, channel::oneshot};
   18use gpui::{
   19    BackgroundExecutor, DismissEvent, Rgba, SemanticVersion, TestAppContext, UpdateGlobal,
   20    VisualTestContext, WindowBounds, WindowOptions, div,
   21};
   22use indoc::indoc;
   23use language::{
   24    BracketPairConfig,
   25    Capability::ReadWrite,
   26    DiagnosticSourceKind, FakeLspAdapter, IndentGuideSettings, LanguageConfig,
   27    LanguageConfigOverride, LanguageMatcher, LanguageName, Override, Point,
   28    language_settings::{
   29        CompletionSettingsContent, FormatterList, LanguageSettingsContent, LspInsertMode,
   30    },
   31    tree_sitter_python,
   32};
   33use language_settings::Formatter;
   34use lsp::CompletionParams;
   35use multi_buffer::{IndentGuide, PathKey};
   36use parking_lot::Mutex;
   37use pretty_assertions::{assert_eq, assert_ne};
   38use project::{
   39    FakeFs,
   40    debugger::breakpoint_store::{BreakpointState, SourceBreakpoint},
   41    project_settings::LspSettings,
   42};
   43use serde_json::{self, json};
   44use settings::{
   45    AllLanguageSettingsContent, IndentGuideBackgroundColoring, IndentGuideColoring,
   46    ProjectSettingsContent,
   47};
   48use std::{cell::RefCell, future::Future, rc::Rc, sync::atomic::AtomicBool, time::Instant};
   49use std::{
   50    iter,
   51    sync::atomic::{self, AtomicUsize},
   52};
   53use test::{build_editor_with_project, editor_lsp_test_context::rust_lang};
   54use text::ToPoint as _;
   55use unindent::Unindent;
   56use util::{
   57    assert_set_eq, path,
   58    rel_path::rel_path,
   59    test::{TextRangeMarker, marked_text_ranges, marked_text_ranges_by, sample_text},
   60    uri,
   61};
   62use workspace::{
   63    CloseActiveItem, CloseAllItems, CloseOtherItems, MoveItemToPaneInDirection, NavigationEntry,
   64    OpenOptions, ViewId,
   65    invalid_buffer_view::InvalidBufferView,
   66    item::{FollowEvent, FollowableItem, Item, ItemHandle, SaveOptions},
   67    register_project_item,
   68};
   69
   70#[gpui::test]
   71fn test_edit_events(cx: &mut TestAppContext) {
   72    init_test(cx, |_| {});
   73
   74    let buffer = cx.new(|cx| {
   75        let mut buffer = language::Buffer::local("123456", cx);
   76        buffer.set_group_interval(Duration::from_secs(1));
   77        buffer
   78    });
   79
   80    let events = Rc::new(RefCell::new(Vec::new()));
   81    let editor1 = cx.add_window({
   82        let events = events.clone();
   83        |window, cx| {
   84            let entity = cx.entity();
   85            cx.subscribe_in(
   86                &entity,
   87                window,
   88                move |_, _, event: &EditorEvent, _, _| match event {
   89                    EditorEvent::Edited { .. } => events.borrow_mut().push(("editor1", "edited")),
   90                    EditorEvent::BufferEdited => {
   91                        events.borrow_mut().push(("editor1", "buffer edited"))
   92                    }
   93                    _ => {}
   94                },
   95            )
   96            .detach();
   97            Editor::for_buffer(buffer.clone(), None, window, cx)
   98        }
   99    });
  100
  101    let editor2 = cx.add_window({
  102        let events = events.clone();
  103        |window, cx| {
  104            cx.subscribe_in(
  105                &cx.entity(),
  106                window,
  107                move |_, _, event: &EditorEvent, _, _| match event {
  108                    EditorEvent::Edited { .. } => events.borrow_mut().push(("editor2", "edited")),
  109                    EditorEvent::BufferEdited => {
  110                        events.borrow_mut().push(("editor2", "buffer edited"))
  111                    }
  112                    _ => {}
  113                },
  114            )
  115            .detach();
  116            Editor::for_buffer(buffer.clone(), None, window, cx)
  117        }
  118    });
  119
  120    assert_eq!(mem::take(&mut *events.borrow_mut()), []);
  121
  122    // Mutating editor 1 will emit an `Edited` event only for that editor.
  123    _ = editor1.update(cx, |editor, window, cx| editor.insert("X", window, cx));
  124    assert_eq!(
  125        mem::take(&mut *events.borrow_mut()),
  126        [
  127            ("editor1", "edited"),
  128            ("editor1", "buffer edited"),
  129            ("editor2", "buffer edited"),
  130        ]
  131    );
  132
  133    // Mutating editor 2 will emit an `Edited` event only for that editor.
  134    _ = editor2.update(cx, |editor, window, cx| editor.delete(&Delete, window, cx));
  135    assert_eq!(
  136        mem::take(&mut *events.borrow_mut()),
  137        [
  138            ("editor2", "edited"),
  139            ("editor1", "buffer edited"),
  140            ("editor2", "buffer edited"),
  141        ]
  142    );
  143
  144    // Undoing on editor 1 will emit an `Edited` event only for that editor.
  145    _ = editor1.update(cx, |editor, window, cx| editor.undo(&Undo, window, cx));
  146    assert_eq!(
  147        mem::take(&mut *events.borrow_mut()),
  148        [
  149            ("editor1", "edited"),
  150            ("editor1", "buffer edited"),
  151            ("editor2", "buffer edited"),
  152        ]
  153    );
  154
  155    // Redoing on editor 1 will emit an `Edited` event only for that editor.
  156    _ = editor1.update(cx, |editor, window, cx| editor.redo(&Redo, window, cx));
  157    assert_eq!(
  158        mem::take(&mut *events.borrow_mut()),
  159        [
  160            ("editor1", "edited"),
  161            ("editor1", "buffer edited"),
  162            ("editor2", "buffer edited"),
  163        ]
  164    );
  165
  166    // Undoing on editor 2 will emit an `Edited` event only for that editor.
  167    _ = editor2.update(cx, |editor, window, cx| editor.undo(&Undo, window, cx));
  168    assert_eq!(
  169        mem::take(&mut *events.borrow_mut()),
  170        [
  171            ("editor2", "edited"),
  172            ("editor1", "buffer edited"),
  173            ("editor2", "buffer edited"),
  174        ]
  175    );
  176
  177    // Redoing on editor 2 will emit an `Edited` event only for that editor.
  178    _ = editor2.update(cx, |editor, window, cx| editor.redo(&Redo, window, cx));
  179    assert_eq!(
  180        mem::take(&mut *events.borrow_mut()),
  181        [
  182            ("editor2", "edited"),
  183            ("editor1", "buffer edited"),
  184            ("editor2", "buffer edited"),
  185        ]
  186    );
  187
  188    // No event is emitted when the mutation is a no-op.
  189    _ = editor2.update(cx, |editor, window, cx| {
  190        editor.change_selections(SelectionEffects::no_scroll(), window, cx, |s| {
  191            s.select_ranges([0..0])
  192        });
  193
  194        editor.backspace(&Backspace, window, cx);
  195    });
  196    assert_eq!(mem::take(&mut *events.borrow_mut()), []);
  197}
  198
  199#[gpui::test]
  200fn test_undo_redo_with_selection_restoration(cx: &mut TestAppContext) {
  201    init_test(cx, |_| {});
  202
  203    let mut now = Instant::now();
  204    let group_interval = Duration::from_millis(1);
  205    let buffer = cx.new(|cx| {
  206        let mut buf = language::Buffer::local("123456", cx);
  207        buf.set_group_interval(group_interval);
  208        buf
  209    });
  210    let buffer = cx.new(|cx| MultiBuffer::singleton(buffer, cx));
  211    let editor = cx.add_window(|window, cx| build_editor(buffer.clone(), window, cx));
  212
  213    _ = editor.update(cx, |editor, window, cx| {
  214        editor.start_transaction_at(now, window, cx);
  215        editor.change_selections(SelectionEffects::no_scroll(), window, cx, |s| {
  216            s.select_ranges([2..4])
  217        });
  218
  219        editor.insert("cd", window, cx);
  220        editor.end_transaction_at(now, cx);
  221        assert_eq!(editor.text(cx), "12cd56");
  222        assert_eq!(
  223            editor.selections.ranges(&editor.display_snapshot(cx)),
  224            vec![4..4]
  225        );
  226
  227        editor.start_transaction_at(now, window, cx);
  228        editor.change_selections(SelectionEffects::no_scroll(), window, cx, |s| {
  229            s.select_ranges([4..5])
  230        });
  231        editor.insert("e", window, cx);
  232        editor.end_transaction_at(now, cx);
  233        assert_eq!(editor.text(cx), "12cde6");
  234        assert_eq!(
  235            editor.selections.ranges(&editor.display_snapshot(cx)),
  236            vec![5..5]
  237        );
  238
  239        now += group_interval + Duration::from_millis(1);
  240        editor.change_selections(SelectionEffects::no_scroll(), window, cx, |s| {
  241            s.select_ranges([2..2])
  242        });
  243
  244        // Simulate an edit in another editor
  245        buffer.update(cx, |buffer, cx| {
  246            buffer.start_transaction_at(now, cx);
  247            buffer.edit([(0..1, "a")], None, cx);
  248            buffer.edit([(1..1, "b")], None, cx);
  249            buffer.end_transaction_at(now, cx);
  250        });
  251
  252        assert_eq!(editor.text(cx), "ab2cde6");
  253        assert_eq!(
  254            editor.selections.ranges(&editor.display_snapshot(cx)),
  255            vec![3..3]
  256        );
  257
  258        // Last transaction happened past the group interval in a different editor.
  259        // Undo it individually and don't restore selections.
  260        editor.undo(&Undo, window, cx);
  261        assert_eq!(editor.text(cx), "12cde6");
  262        assert_eq!(
  263            editor.selections.ranges(&editor.display_snapshot(cx)),
  264            vec![2..2]
  265        );
  266
  267        // First two transactions happened within the group interval in this editor.
  268        // Undo them together and restore selections.
  269        editor.undo(&Undo, window, cx);
  270        editor.undo(&Undo, window, cx); // Undo stack is empty here, so this is a no-op.
  271        assert_eq!(editor.text(cx), "123456");
  272        assert_eq!(
  273            editor.selections.ranges(&editor.display_snapshot(cx)),
  274            vec![0..0]
  275        );
  276
  277        // Redo the first two transactions together.
  278        editor.redo(&Redo, window, cx);
  279        assert_eq!(editor.text(cx), "12cde6");
  280        assert_eq!(
  281            editor.selections.ranges(&editor.display_snapshot(cx)),
  282            vec![5..5]
  283        );
  284
  285        // Redo the last transaction on its own.
  286        editor.redo(&Redo, window, cx);
  287        assert_eq!(editor.text(cx), "ab2cde6");
  288        assert_eq!(
  289            editor.selections.ranges(&editor.display_snapshot(cx)),
  290            vec![6..6]
  291        );
  292
  293        // Test empty transactions.
  294        editor.start_transaction_at(now, window, cx);
  295        editor.end_transaction_at(now, cx);
  296        editor.undo(&Undo, window, cx);
  297        assert_eq!(editor.text(cx), "12cde6");
  298    });
  299}
  300
  301#[gpui::test]
  302fn test_ime_composition(cx: &mut TestAppContext) {
  303    init_test(cx, |_| {});
  304
  305    let buffer = cx.new(|cx| {
  306        let mut buffer = language::Buffer::local("abcde", cx);
  307        // Ensure automatic grouping doesn't occur.
  308        buffer.set_group_interval(Duration::ZERO);
  309        buffer
  310    });
  311
  312    let buffer = cx.new(|cx| MultiBuffer::singleton(buffer, cx));
  313    cx.add_window(|window, cx| {
  314        let mut editor = build_editor(buffer.clone(), window, cx);
  315
  316        // Start a new IME composition.
  317        editor.replace_and_mark_text_in_range(Some(0..1), "à", None, window, cx);
  318        editor.replace_and_mark_text_in_range(Some(0..1), "á", None, window, cx);
  319        editor.replace_and_mark_text_in_range(Some(0..1), "ä", None, window, cx);
  320        assert_eq!(editor.text(cx), "äbcde");
  321        assert_eq!(
  322            editor.marked_text_ranges(cx),
  323            Some(vec![OffsetUtf16(0)..OffsetUtf16(1)])
  324        );
  325
  326        // Finalize IME composition.
  327        editor.replace_text_in_range(None, "ā", window, cx);
  328        assert_eq!(editor.text(cx), "ābcde");
  329        assert_eq!(editor.marked_text_ranges(cx), None);
  330
  331        // IME composition edits are grouped and are undone/redone at once.
  332        editor.undo(&Default::default(), window, cx);
  333        assert_eq!(editor.text(cx), "abcde");
  334        assert_eq!(editor.marked_text_ranges(cx), None);
  335        editor.redo(&Default::default(), window, cx);
  336        assert_eq!(editor.text(cx), "ābcde");
  337        assert_eq!(editor.marked_text_ranges(cx), None);
  338
  339        // Start a new IME composition.
  340        editor.replace_and_mark_text_in_range(Some(0..1), "à", None, window, cx);
  341        assert_eq!(
  342            editor.marked_text_ranges(cx),
  343            Some(vec![OffsetUtf16(0)..OffsetUtf16(1)])
  344        );
  345
  346        // Undoing during an IME composition cancels it.
  347        editor.undo(&Default::default(), window, cx);
  348        assert_eq!(editor.text(cx), "ābcde");
  349        assert_eq!(editor.marked_text_ranges(cx), None);
  350
  351        // Start a new IME composition with an invalid marked range, ensuring it gets clipped.
  352        editor.replace_and_mark_text_in_range(Some(4..999), "è", None, window, cx);
  353        assert_eq!(editor.text(cx), "ābcdè");
  354        assert_eq!(
  355            editor.marked_text_ranges(cx),
  356            Some(vec![OffsetUtf16(4)..OffsetUtf16(5)])
  357        );
  358
  359        // Finalize IME composition with an invalid replacement range, ensuring it gets clipped.
  360        editor.replace_text_in_range(Some(4..999), "ę", window, cx);
  361        assert_eq!(editor.text(cx), "ābcdę");
  362        assert_eq!(editor.marked_text_ranges(cx), None);
  363
  364        // Start a new IME composition with multiple cursors.
  365        editor.change_selections(SelectionEffects::no_scroll(), window, cx, |s| {
  366            s.select_ranges([
  367                OffsetUtf16(1)..OffsetUtf16(1),
  368                OffsetUtf16(3)..OffsetUtf16(3),
  369                OffsetUtf16(5)..OffsetUtf16(5),
  370            ])
  371        });
  372        editor.replace_and_mark_text_in_range(Some(4..5), "XYZ", None, window, cx);
  373        assert_eq!(editor.text(cx), "XYZbXYZdXYZ");
  374        assert_eq!(
  375            editor.marked_text_ranges(cx),
  376            Some(vec![
  377                OffsetUtf16(0)..OffsetUtf16(3),
  378                OffsetUtf16(4)..OffsetUtf16(7),
  379                OffsetUtf16(8)..OffsetUtf16(11)
  380            ])
  381        );
  382
  383        // Ensure the newly-marked range gets treated as relative to the previously-marked ranges.
  384        editor.replace_and_mark_text_in_range(Some(1..2), "1", None, window, cx);
  385        assert_eq!(editor.text(cx), "X1ZbX1ZdX1Z");
  386        assert_eq!(
  387            editor.marked_text_ranges(cx),
  388            Some(vec![
  389                OffsetUtf16(1)..OffsetUtf16(2),
  390                OffsetUtf16(5)..OffsetUtf16(6),
  391                OffsetUtf16(9)..OffsetUtf16(10)
  392            ])
  393        );
  394
  395        // Finalize IME composition with multiple cursors.
  396        editor.replace_text_in_range(Some(9..10), "2", window, cx);
  397        assert_eq!(editor.text(cx), "X2ZbX2ZdX2Z");
  398        assert_eq!(editor.marked_text_ranges(cx), None);
  399
  400        editor
  401    });
  402}
  403
  404#[gpui::test]
  405fn test_selection_with_mouse(cx: &mut TestAppContext) {
  406    init_test(cx, |_| {});
  407
  408    let editor = cx.add_window(|window, cx| {
  409        let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\nddddddd\n", cx);
  410        build_editor(buffer, window, cx)
  411    });
  412
  413    _ = editor.update(cx, |editor, window, cx| {
  414        editor.begin_selection(DisplayPoint::new(DisplayRow(2), 2), false, 1, window, cx);
  415    });
  416    assert_eq!(
  417        editor
  418            .update(cx, |editor, _, cx| editor.selections.display_ranges(cx))
  419            .unwrap(),
  420        [DisplayPoint::new(DisplayRow(2), 2)..DisplayPoint::new(DisplayRow(2), 2)]
  421    );
  422
  423    _ = editor.update(cx, |editor, window, cx| {
  424        editor.update_selection(
  425            DisplayPoint::new(DisplayRow(3), 3),
  426            0,
  427            gpui::Point::<f32>::default(),
  428            window,
  429            cx,
  430        );
  431    });
  432
  433    assert_eq!(
  434        editor
  435            .update(cx, |editor, _, cx| editor.selections.display_ranges(cx))
  436            .unwrap(),
  437        [DisplayPoint::new(DisplayRow(2), 2)..DisplayPoint::new(DisplayRow(3), 3)]
  438    );
  439
  440    _ = editor.update(cx, |editor, window, cx| {
  441        editor.update_selection(
  442            DisplayPoint::new(DisplayRow(1), 1),
  443            0,
  444            gpui::Point::<f32>::default(),
  445            window,
  446            cx,
  447        );
  448    });
  449
  450    assert_eq!(
  451        editor
  452            .update(cx, |editor, _, cx| editor.selections.display_ranges(cx))
  453            .unwrap(),
  454        [DisplayPoint::new(DisplayRow(2), 2)..DisplayPoint::new(DisplayRow(1), 1)]
  455    );
  456
  457    _ = editor.update(cx, |editor, window, cx| {
  458        editor.end_selection(window, cx);
  459        editor.update_selection(
  460            DisplayPoint::new(DisplayRow(3), 3),
  461            0,
  462            gpui::Point::<f32>::default(),
  463            window,
  464            cx,
  465        );
  466    });
  467
  468    assert_eq!(
  469        editor
  470            .update(cx, |editor, _, cx| editor.selections.display_ranges(cx))
  471            .unwrap(),
  472        [DisplayPoint::new(DisplayRow(2), 2)..DisplayPoint::new(DisplayRow(1), 1)]
  473    );
  474
  475    _ = editor.update(cx, |editor, window, cx| {
  476        editor.begin_selection(DisplayPoint::new(DisplayRow(3), 3), true, 1, window, cx);
  477        editor.update_selection(
  478            DisplayPoint::new(DisplayRow(0), 0),
  479            0,
  480            gpui::Point::<f32>::default(),
  481            window,
  482            cx,
  483        );
  484    });
  485
  486    assert_eq!(
  487        editor
  488            .update(cx, |editor, _, cx| editor.selections.display_ranges(cx))
  489            .unwrap(),
  490        [
  491            DisplayPoint::new(DisplayRow(2), 2)..DisplayPoint::new(DisplayRow(1), 1),
  492            DisplayPoint::new(DisplayRow(3), 3)..DisplayPoint::new(DisplayRow(0), 0)
  493        ]
  494    );
  495
  496    _ = editor.update(cx, |editor, window, cx| {
  497        editor.end_selection(window, cx);
  498    });
  499
  500    assert_eq!(
  501        editor
  502            .update(cx, |editor, _, cx| editor.selections.display_ranges(cx))
  503            .unwrap(),
  504        [DisplayPoint::new(DisplayRow(3), 3)..DisplayPoint::new(DisplayRow(0), 0)]
  505    );
  506}
  507
  508#[gpui::test]
  509fn test_multiple_cursor_removal(cx: &mut TestAppContext) {
  510    init_test(cx, |_| {});
  511
  512    let editor = cx.add_window(|window, cx| {
  513        let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\nddddddd\n", cx);
  514        build_editor(buffer, window, cx)
  515    });
  516
  517    _ = editor.update(cx, |editor, window, cx| {
  518        editor.begin_selection(DisplayPoint::new(DisplayRow(2), 1), false, 1, window, cx);
  519    });
  520
  521    _ = editor.update(cx, |editor, window, cx| {
  522        editor.end_selection(window, cx);
  523    });
  524
  525    _ = editor.update(cx, |editor, window, cx| {
  526        editor.begin_selection(DisplayPoint::new(DisplayRow(3), 2), true, 1, window, cx);
  527    });
  528
  529    _ = editor.update(cx, |editor, window, cx| {
  530        editor.end_selection(window, cx);
  531    });
  532
  533    assert_eq!(
  534        editor
  535            .update(cx, |editor, _, cx| editor.selections.display_ranges(cx))
  536            .unwrap(),
  537        [
  538            DisplayPoint::new(DisplayRow(2), 1)..DisplayPoint::new(DisplayRow(2), 1),
  539            DisplayPoint::new(DisplayRow(3), 2)..DisplayPoint::new(DisplayRow(3), 2)
  540        ]
  541    );
  542
  543    _ = editor.update(cx, |editor, window, cx| {
  544        editor.begin_selection(DisplayPoint::new(DisplayRow(2), 1), true, 1, window, cx);
  545    });
  546
  547    _ = editor.update(cx, |editor, window, cx| {
  548        editor.end_selection(window, cx);
  549    });
  550
  551    assert_eq!(
  552        editor
  553            .update(cx, |editor, _, cx| editor.selections.display_ranges(cx))
  554            .unwrap(),
  555        [DisplayPoint::new(DisplayRow(3), 2)..DisplayPoint::new(DisplayRow(3), 2)]
  556    );
  557}
  558
  559#[gpui::test]
  560fn test_canceling_pending_selection(cx: &mut TestAppContext) {
  561    init_test(cx, |_| {});
  562
  563    let editor = cx.add_window(|window, cx| {
  564        let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
  565        build_editor(buffer, window, cx)
  566    });
  567
  568    _ = editor.update(cx, |editor, window, cx| {
  569        editor.begin_selection(DisplayPoint::new(DisplayRow(2), 2), false, 1, window, cx);
  570        assert_eq!(
  571            editor.selections.display_ranges(cx),
  572            [DisplayPoint::new(DisplayRow(2), 2)..DisplayPoint::new(DisplayRow(2), 2)]
  573        );
  574    });
  575
  576    _ = editor.update(cx, |editor, window, cx| {
  577        editor.update_selection(
  578            DisplayPoint::new(DisplayRow(3), 3),
  579            0,
  580            gpui::Point::<f32>::default(),
  581            window,
  582            cx,
  583        );
  584        assert_eq!(
  585            editor.selections.display_ranges(cx),
  586            [DisplayPoint::new(DisplayRow(2), 2)..DisplayPoint::new(DisplayRow(3), 3)]
  587        );
  588    });
  589
  590    _ = editor.update(cx, |editor, window, cx| {
  591        editor.cancel(&Cancel, window, cx);
  592        editor.update_selection(
  593            DisplayPoint::new(DisplayRow(1), 1),
  594            0,
  595            gpui::Point::<f32>::default(),
  596            window,
  597            cx,
  598        );
  599        assert_eq!(
  600            editor.selections.display_ranges(cx),
  601            [DisplayPoint::new(DisplayRow(2), 2)..DisplayPoint::new(DisplayRow(3), 3)]
  602        );
  603    });
  604}
  605
  606#[gpui::test]
  607fn test_movement_actions_with_pending_selection(cx: &mut TestAppContext) {
  608    init_test(cx, |_| {});
  609
  610    let editor = cx.add_window(|window, cx| {
  611        let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
  612        build_editor(buffer, window, cx)
  613    });
  614
  615    _ = editor.update(cx, |editor, window, cx| {
  616        editor.begin_selection(DisplayPoint::new(DisplayRow(2), 2), false, 1, window, cx);
  617        assert_eq!(
  618            editor.selections.display_ranges(cx),
  619            [DisplayPoint::new(DisplayRow(2), 2)..DisplayPoint::new(DisplayRow(2), 2)]
  620        );
  621
  622        editor.move_down(&Default::default(), window, cx);
  623        assert_eq!(
  624            editor.selections.display_ranges(cx),
  625            [DisplayPoint::new(DisplayRow(3), 2)..DisplayPoint::new(DisplayRow(3), 2)]
  626        );
  627
  628        editor.begin_selection(DisplayPoint::new(DisplayRow(2), 2), false, 1, window, cx);
  629        assert_eq!(
  630            editor.selections.display_ranges(cx),
  631            [DisplayPoint::new(DisplayRow(2), 2)..DisplayPoint::new(DisplayRow(2), 2)]
  632        );
  633
  634        editor.move_up(&Default::default(), window, cx);
  635        assert_eq!(
  636            editor.selections.display_ranges(cx),
  637            [DisplayPoint::new(DisplayRow(1), 2)..DisplayPoint::new(DisplayRow(1), 2)]
  638        );
  639    });
  640}
  641
  642#[gpui::test]
  643fn test_extending_selection(cx: &mut TestAppContext) {
  644    init_test(cx, |_| {});
  645
  646    let editor = cx.add_window(|window, cx| {
  647        let buffer = MultiBuffer::build_simple("aaa bbb ccc ddd eee", cx);
  648        build_editor(buffer, window, cx)
  649    });
  650
  651    _ = editor.update(cx, |editor, window, cx| {
  652        editor.begin_selection(DisplayPoint::new(DisplayRow(0), 5), false, 1, window, cx);
  653        editor.end_selection(window, cx);
  654        assert_eq!(
  655            editor.selections.display_ranges(cx),
  656            [DisplayPoint::new(DisplayRow(0), 5)..DisplayPoint::new(DisplayRow(0), 5)]
  657        );
  658
  659        editor.extend_selection(DisplayPoint::new(DisplayRow(0), 10), 1, window, cx);
  660        editor.end_selection(window, cx);
  661        assert_eq!(
  662            editor.selections.display_ranges(cx),
  663            [DisplayPoint::new(DisplayRow(0), 5)..DisplayPoint::new(DisplayRow(0), 10)]
  664        );
  665
  666        editor.extend_selection(DisplayPoint::new(DisplayRow(0), 10), 1, window, cx);
  667        editor.end_selection(window, cx);
  668        editor.extend_selection(DisplayPoint::new(DisplayRow(0), 10), 2, window, cx);
  669        assert_eq!(
  670            editor.selections.display_ranges(cx),
  671            [DisplayPoint::new(DisplayRow(0), 5)..DisplayPoint::new(DisplayRow(0), 11)]
  672        );
  673
  674        editor.update_selection(
  675            DisplayPoint::new(DisplayRow(0), 1),
  676            0,
  677            gpui::Point::<f32>::default(),
  678            window,
  679            cx,
  680        );
  681        editor.end_selection(window, cx);
  682        assert_eq!(
  683            editor.selections.display_ranges(cx),
  684            [DisplayPoint::new(DisplayRow(0), 5)..DisplayPoint::new(DisplayRow(0), 0)]
  685        );
  686
  687        editor.begin_selection(DisplayPoint::new(DisplayRow(0), 5), true, 1, window, cx);
  688        editor.end_selection(window, cx);
  689        editor.begin_selection(DisplayPoint::new(DisplayRow(0), 5), true, 2, window, cx);
  690        editor.end_selection(window, cx);
  691        assert_eq!(
  692            editor.selections.display_ranges(cx),
  693            [DisplayPoint::new(DisplayRow(0), 4)..DisplayPoint::new(DisplayRow(0), 7)]
  694        );
  695
  696        editor.extend_selection(DisplayPoint::new(DisplayRow(0), 10), 1, window, cx);
  697        assert_eq!(
  698            editor.selections.display_ranges(cx),
  699            [DisplayPoint::new(DisplayRow(0), 4)..DisplayPoint::new(DisplayRow(0), 11)]
  700        );
  701
  702        editor.update_selection(
  703            DisplayPoint::new(DisplayRow(0), 6),
  704            0,
  705            gpui::Point::<f32>::default(),
  706            window,
  707            cx,
  708        );
  709        assert_eq!(
  710            editor.selections.display_ranges(cx),
  711            [DisplayPoint::new(DisplayRow(0), 4)..DisplayPoint::new(DisplayRow(0), 7)]
  712        );
  713
  714        editor.update_selection(
  715            DisplayPoint::new(DisplayRow(0), 1),
  716            0,
  717            gpui::Point::<f32>::default(),
  718            window,
  719            cx,
  720        );
  721        editor.end_selection(window, cx);
  722        assert_eq!(
  723            editor.selections.display_ranges(cx),
  724            [DisplayPoint::new(DisplayRow(0), 7)..DisplayPoint::new(DisplayRow(0), 0)]
  725        );
  726    });
  727}
  728
  729#[gpui::test]
  730fn test_clone(cx: &mut TestAppContext) {
  731    init_test(cx, |_| {});
  732
  733    let (text, selection_ranges) = marked_text_ranges(
  734        indoc! {"
  735            one
  736            two
  737            threeˇ
  738            four
  739            fiveˇ
  740        "},
  741        true,
  742    );
  743
  744    let editor = cx.add_window(|window, cx| {
  745        let buffer = MultiBuffer::build_simple(&text, cx);
  746        build_editor(buffer, window, cx)
  747    });
  748
  749    _ = editor.update(cx, |editor, window, cx| {
  750        editor.change_selections(SelectionEffects::no_scroll(), window, cx, |s| {
  751            s.select_ranges(selection_ranges.clone())
  752        });
  753        editor.fold_creases(
  754            vec![
  755                Crease::simple(Point::new(1, 0)..Point::new(2, 0), FoldPlaceholder::test()),
  756                Crease::simple(Point::new(3, 0)..Point::new(4, 0), FoldPlaceholder::test()),
  757            ],
  758            true,
  759            window,
  760            cx,
  761        );
  762    });
  763
  764    let cloned_editor = editor
  765        .update(cx, |editor, _, cx| {
  766            cx.open_window(Default::default(), |window, cx| {
  767                cx.new(|cx| editor.clone(window, cx))
  768            })
  769        })
  770        .unwrap()
  771        .unwrap();
  772
  773    let snapshot = editor
  774        .update(cx, |e, window, cx| e.snapshot(window, cx))
  775        .unwrap();
  776    let cloned_snapshot = cloned_editor
  777        .update(cx, |e, window, cx| e.snapshot(window, cx))
  778        .unwrap();
  779
  780    assert_eq!(
  781        cloned_editor
  782            .update(cx, |e, _, cx| e.display_text(cx))
  783            .unwrap(),
  784        editor.update(cx, |e, _, cx| e.display_text(cx)).unwrap()
  785    );
  786    assert_eq!(
  787        cloned_snapshot
  788            .folds_in_range(0..text.len())
  789            .collect::<Vec<_>>(),
  790        snapshot.folds_in_range(0..text.len()).collect::<Vec<_>>(),
  791    );
  792    assert_set_eq!(
  793        cloned_editor
  794            .update(cx, |editor, _, cx| editor
  795                .selections
  796                .ranges::<Point>(&editor.display_snapshot(cx)))
  797            .unwrap(),
  798        editor
  799            .update(cx, |editor, _, cx| editor
  800                .selections
  801                .ranges(&editor.display_snapshot(cx)))
  802            .unwrap()
  803    );
  804    assert_set_eq!(
  805        cloned_editor
  806            .update(cx, |e, _window, cx| e.selections.display_ranges(cx))
  807            .unwrap(),
  808        editor
  809            .update(cx, |e, _, cx| e.selections.display_ranges(cx))
  810            .unwrap()
  811    );
  812}
  813
  814#[gpui::test]
  815async fn test_navigation_history(cx: &mut TestAppContext) {
  816    init_test(cx, |_| {});
  817
  818    use workspace::item::Item;
  819
  820    let fs = FakeFs::new(cx.executor());
  821    let project = Project::test(fs, [], cx).await;
  822    let workspace = cx.add_window(|window, cx| Workspace::test_new(project, window, cx));
  823    let pane = workspace
  824        .update(cx, |workspace, _, _| workspace.active_pane().clone())
  825        .unwrap();
  826
  827    _ = workspace.update(cx, |_v, window, cx| {
  828        cx.new(|cx| {
  829            let buffer = MultiBuffer::build_simple(&sample_text(300, 5, 'a'), cx);
  830            let mut editor = build_editor(buffer, window, cx);
  831            let handle = cx.entity();
  832            editor.set_nav_history(Some(pane.read(cx).nav_history_for_item(&handle)));
  833
  834            fn pop_history(editor: &mut Editor, cx: &mut App) -> Option<NavigationEntry> {
  835                editor.nav_history.as_mut().unwrap().pop_backward(cx)
  836            }
  837
  838            // Move the cursor a small distance.
  839            // Nothing is added to the navigation history.
  840            editor.change_selections(SelectionEffects::no_scroll(), window, cx, |s| {
  841                s.select_display_ranges([
  842                    DisplayPoint::new(DisplayRow(1), 0)..DisplayPoint::new(DisplayRow(1), 0)
  843                ])
  844            });
  845            editor.change_selections(SelectionEffects::no_scroll(), window, cx, |s| {
  846                s.select_display_ranges([
  847                    DisplayPoint::new(DisplayRow(3), 0)..DisplayPoint::new(DisplayRow(3), 0)
  848                ])
  849            });
  850            assert!(pop_history(&mut editor, cx).is_none());
  851
  852            // Move the cursor a large distance.
  853            // The history can jump back to the previous position.
  854            editor.change_selections(SelectionEffects::no_scroll(), window, cx, |s| {
  855                s.select_display_ranges([
  856                    DisplayPoint::new(DisplayRow(13), 0)..DisplayPoint::new(DisplayRow(13), 3)
  857                ])
  858            });
  859            let nav_entry = pop_history(&mut editor, cx).unwrap();
  860            editor.navigate(nav_entry.data.unwrap(), window, cx);
  861            assert_eq!(nav_entry.item.id(), cx.entity_id());
  862            assert_eq!(
  863                editor.selections.display_ranges(cx),
  864                &[DisplayPoint::new(DisplayRow(3), 0)..DisplayPoint::new(DisplayRow(3), 0)]
  865            );
  866            assert!(pop_history(&mut editor, cx).is_none());
  867
  868            // Move the cursor a small distance via the mouse.
  869            // Nothing is added to the navigation history.
  870            editor.begin_selection(DisplayPoint::new(DisplayRow(5), 0), false, 1, window, cx);
  871            editor.end_selection(window, cx);
  872            assert_eq!(
  873                editor.selections.display_ranges(cx),
  874                &[DisplayPoint::new(DisplayRow(5), 0)..DisplayPoint::new(DisplayRow(5), 0)]
  875            );
  876            assert!(pop_history(&mut editor, cx).is_none());
  877
  878            // Move the cursor a large distance via the mouse.
  879            // The history can jump back to the previous position.
  880            editor.begin_selection(DisplayPoint::new(DisplayRow(15), 0), false, 1, window, cx);
  881            editor.end_selection(window, cx);
  882            assert_eq!(
  883                editor.selections.display_ranges(cx),
  884                &[DisplayPoint::new(DisplayRow(15), 0)..DisplayPoint::new(DisplayRow(15), 0)]
  885            );
  886            let nav_entry = pop_history(&mut editor, cx).unwrap();
  887            editor.navigate(nav_entry.data.unwrap(), window, cx);
  888            assert_eq!(nav_entry.item.id(), cx.entity_id());
  889            assert_eq!(
  890                editor.selections.display_ranges(cx),
  891                &[DisplayPoint::new(DisplayRow(5), 0)..DisplayPoint::new(DisplayRow(5), 0)]
  892            );
  893            assert!(pop_history(&mut editor, cx).is_none());
  894
  895            // Set scroll position to check later
  896            editor.set_scroll_position(gpui::Point::<f64>::new(5.5, 5.5), window, cx);
  897            let original_scroll_position = editor.scroll_manager.anchor();
  898
  899            // Jump to the end of the document and adjust scroll
  900            editor.move_to_end(&MoveToEnd, window, cx);
  901            editor.set_scroll_position(gpui::Point::<f64>::new(-2.5, -0.5), window, cx);
  902            assert_ne!(editor.scroll_manager.anchor(), original_scroll_position);
  903
  904            let nav_entry = pop_history(&mut editor, cx).unwrap();
  905            editor.navigate(nav_entry.data.unwrap(), window, cx);
  906            assert_eq!(editor.scroll_manager.anchor(), original_scroll_position);
  907
  908            // Ensure we don't panic when navigation data contains invalid anchors *and* points.
  909            let mut invalid_anchor = editor.scroll_manager.anchor().anchor;
  910            invalid_anchor.text_anchor.buffer_id = BufferId::new(999).ok();
  911            let invalid_point = Point::new(9999, 0);
  912            editor.navigate(
  913                Box::new(NavigationData {
  914                    cursor_anchor: invalid_anchor,
  915                    cursor_position: invalid_point,
  916                    scroll_anchor: ScrollAnchor {
  917                        anchor: invalid_anchor,
  918                        offset: Default::default(),
  919                    },
  920                    scroll_top_row: invalid_point.row,
  921                }),
  922                window,
  923                cx,
  924            );
  925            assert_eq!(
  926                editor.selections.display_ranges(cx),
  927                &[editor.max_point(cx)..editor.max_point(cx)]
  928            );
  929            assert_eq!(
  930                editor.scroll_position(cx),
  931                gpui::Point::new(0., editor.max_point(cx).row().as_f64())
  932            );
  933
  934            editor
  935        })
  936    });
  937}
  938
  939#[gpui::test]
  940fn test_cancel(cx: &mut TestAppContext) {
  941    init_test(cx, |_| {});
  942
  943    let editor = cx.add_window(|window, cx| {
  944        let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
  945        build_editor(buffer, window, cx)
  946    });
  947
  948    _ = editor.update(cx, |editor, window, cx| {
  949        editor.begin_selection(DisplayPoint::new(DisplayRow(3), 4), false, 1, window, cx);
  950        editor.update_selection(
  951            DisplayPoint::new(DisplayRow(1), 1),
  952            0,
  953            gpui::Point::<f32>::default(),
  954            window,
  955            cx,
  956        );
  957        editor.end_selection(window, cx);
  958
  959        editor.begin_selection(DisplayPoint::new(DisplayRow(0), 1), true, 1, window, cx);
  960        editor.update_selection(
  961            DisplayPoint::new(DisplayRow(0), 3),
  962            0,
  963            gpui::Point::<f32>::default(),
  964            window,
  965            cx,
  966        );
  967        editor.end_selection(window, cx);
  968        assert_eq!(
  969            editor.selections.display_ranges(cx),
  970            [
  971                DisplayPoint::new(DisplayRow(0), 1)..DisplayPoint::new(DisplayRow(0), 3),
  972                DisplayPoint::new(DisplayRow(3), 4)..DisplayPoint::new(DisplayRow(1), 1),
  973            ]
  974        );
  975    });
  976
  977    _ = editor.update(cx, |editor, window, cx| {
  978        editor.cancel(&Cancel, window, cx);
  979        assert_eq!(
  980            editor.selections.display_ranges(cx),
  981            [DisplayPoint::new(DisplayRow(3), 4)..DisplayPoint::new(DisplayRow(1), 1)]
  982        );
  983    });
  984
  985    _ = editor.update(cx, |editor, window, cx| {
  986        editor.cancel(&Cancel, window, cx);
  987        assert_eq!(
  988            editor.selections.display_ranges(cx),
  989            [DisplayPoint::new(DisplayRow(1), 1)..DisplayPoint::new(DisplayRow(1), 1)]
  990        );
  991    });
  992}
  993
  994#[gpui::test]
  995fn test_fold_action(cx: &mut TestAppContext) {
  996    init_test(cx, |_| {});
  997
  998    let editor = cx.add_window(|window, cx| {
  999        let buffer = MultiBuffer::build_simple(
 1000            &"
 1001                impl Foo {
 1002                    // Hello!
 1003
 1004                    fn a() {
 1005                        1
 1006                    }
 1007
 1008                    fn b() {
 1009                        2
 1010                    }
 1011
 1012                    fn c() {
 1013                        3
 1014                    }
 1015                }
 1016            "
 1017            .unindent(),
 1018            cx,
 1019        );
 1020        build_editor(buffer, window, cx)
 1021    });
 1022
 1023    _ = editor.update(cx, |editor, window, cx| {
 1024        editor.change_selections(SelectionEffects::no_scroll(), window, cx, |s| {
 1025            s.select_display_ranges([
 1026                DisplayPoint::new(DisplayRow(7), 0)..DisplayPoint::new(DisplayRow(12), 0)
 1027            ]);
 1028        });
 1029        editor.fold(&Fold, window, cx);
 1030        assert_eq!(
 1031            editor.display_text(cx),
 1032            "
 1033                impl Foo {
 1034                    // Hello!
 1035
 1036                    fn a() {
 1037                        1
 1038                    }
 1039
 1040                    fn b() {⋯
 1041                    }
 1042
 1043                    fn c() {⋯
 1044                    }
 1045                }
 1046            "
 1047            .unindent(),
 1048        );
 1049
 1050        editor.fold(&Fold, window, cx);
 1051        assert_eq!(
 1052            editor.display_text(cx),
 1053            "
 1054                impl Foo {⋯
 1055                }
 1056            "
 1057            .unindent(),
 1058        );
 1059
 1060        editor.unfold_lines(&UnfoldLines, window, cx);
 1061        assert_eq!(
 1062            editor.display_text(cx),
 1063            "
 1064                impl Foo {
 1065                    // Hello!
 1066
 1067                    fn a() {
 1068                        1
 1069                    }
 1070
 1071                    fn b() {⋯
 1072                    }
 1073
 1074                    fn c() {⋯
 1075                    }
 1076                }
 1077            "
 1078            .unindent(),
 1079        );
 1080
 1081        editor.unfold_lines(&UnfoldLines, window, cx);
 1082        assert_eq!(
 1083            editor.display_text(cx),
 1084            editor.buffer.read(cx).read(cx).text()
 1085        );
 1086    });
 1087}
 1088
 1089#[gpui::test]
 1090fn test_fold_action_whitespace_sensitive_language(cx: &mut TestAppContext) {
 1091    init_test(cx, |_| {});
 1092
 1093    let editor = cx.add_window(|window, cx| {
 1094        let buffer = MultiBuffer::build_simple(
 1095            &"
 1096                class Foo:
 1097                    # Hello!
 1098
 1099                    def a():
 1100                        print(1)
 1101
 1102                    def b():
 1103                        print(2)
 1104
 1105                    def c():
 1106                        print(3)
 1107            "
 1108            .unindent(),
 1109            cx,
 1110        );
 1111        build_editor(buffer, window, cx)
 1112    });
 1113
 1114    _ = editor.update(cx, |editor, window, cx| {
 1115        editor.change_selections(SelectionEffects::no_scroll(), window, cx, |s| {
 1116            s.select_display_ranges([
 1117                DisplayPoint::new(DisplayRow(6), 0)..DisplayPoint::new(DisplayRow(10), 0)
 1118            ]);
 1119        });
 1120        editor.fold(&Fold, window, cx);
 1121        assert_eq!(
 1122            editor.display_text(cx),
 1123            "
 1124                class Foo:
 1125                    # Hello!
 1126
 1127                    def a():
 1128                        print(1)
 1129
 1130                    def b():⋯
 1131
 1132                    def c():⋯
 1133            "
 1134            .unindent(),
 1135        );
 1136
 1137        editor.fold(&Fold, window, cx);
 1138        assert_eq!(
 1139            editor.display_text(cx),
 1140            "
 1141                class Foo:⋯
 1142            "
 1143            .unindent(),
 1144        );
 1145
 1146        editor.unfold_lines(&UnfoldLines, window, cx);
 1147        assert_eq!(
 1148            editor.display_text(cx),
 1149            "
 1150                class Foo:
 1151                    # Hello!
 1152
 1153                    def a():
 1154                        print(1)
 1155
 1156                    def b():⋯
 1157
 1158                    def c():⋯
 1159            "
 1160            .unindent(),
 1161        );
 1162
 1163        editor.unfold_lines(&UnfoldLines, window, cx);
 1164        assert_eq!(
 1165            editor.display_text(cx),
 1166            editor.buffer.read(cx).read(cx).text()
 1167        );
 1168    });
 1169}
 1170
 1171#[gpui::test]
 1172fn test_fold_action_multiple_line_breaks(cx: &mut TestAppContext) {
 1173    init_test(cx, |_| {});
 1174
 1175    let editor = cx.add_window(|window, cx| {
 1176        let buffer = MultiBuffer::build_simple(
 1177            &"
 1178                class Foo:
 1179                    # Hello!
 1180
 1181                    def a():
 1182                        print(1)
 1183
 1184                    def b():
 1185                        print(2)
 1186
 1187
 1188                    def c():
 1189                        print(3)
 1190
 1191
 1192            "
 1193            .unindent(),
 1194            cx,
 1195        );
 1196        build_editor(buffer, window, cx)
 1197    });
 1198
 1199    _ = editor.update(cx, |editor, window, cx| {
 1200        editor.change_selections(SelectionEffects::no_scroll(), window, cx, |s| {
 1201            s.select_display_ranges([
 1202                DisplayPoint::new(DisplayRow(6), 0)..DisplayPoint::new(DisplayRow(11), 0)
 1203            ]);
 1204        });
 1205        editor.fold(&Fold, window, cx);
 1206        assert_eq!(
 1207            editor.display_text(cx),
 1208            "
 1209                class Foo:
 1210                    # Hello!
 1211
 1212                    def a():
 1213                        print(1)
 1214
 1215                    def b():⋯
 1216
 1217
 1218                    def c():⋯
 1219
 1220
 1221            "
 1222            .unindent(),
 1223        );
 1224
 1225        editor.fold(&Fold, window, cx);
 1226        assert_eq!(
 1227            editor.display_text(cx),
 1228            "
 1229                class Foo:⋯
 1230
 1231
 1232            "
 1233            .unindent(),
 1234        );
 1235
 1236        editor.unfold_lines(&UnfoldLines, window, cx);
 1237        assert_eq!(
 1238            editor.display_text(cx),
 1239            "
 1240                class Foo:
 1241                    # Hello!
 1242
 1243                    def a():
 1244                        print(1)
 1245
 1246                    def b():⋯
 1247
 1248
 1249                    def c():⋯
 1250
 1251
 1252            "
 1253            .unindent(),
 1254        );
 1255
 1256        editor.unfold_lines(&UnfoldLines, window, cx);
 1257        assert_eq!(
 1258            editor.display_text(cx),
 1259            editor.buffer.read(cx).read(cx).text()
 1260        );
 1261    });
 1262}
 1263
 1264#[gpui::test]
 1265fn test_fold_at_level(cx: &mut TestAppContext) {
 1266    init_test(cx, |_| {});
 1267
 1268    let editor = cx.add_window(|window, cx| {
 1269        let buffer = MultiBuffer::build_simple(
 1270            &"
 1271                class Foo:
 1272                    # Hello!
 1273
 1274                    def a():
 1275                        print(1)
 1276
 1277                    def b():
 1278                        print(2)
 1279
 1280
 1281                class Bar:
 1282                    # World!
 1283
 1284                    def a():
 1285                        print(1)
 1286
 1287                    def b():
 1288                        print(2)
 1289
 1290
 1291            "
 1292            .unindent(),
 1293            cx,
 1294        );
 1295        build_editor(buffer, window, cx)
 1296    });
 1297
 1298    _ = editor.update(cx, |editor, window, cx| {
 1299        editor.fold_at_level(&FoldAtLevel(2), window, cx);
 1300        assert_eq!(
 1301            editor.display_text(cx),
 1302            "
 1303                class Foo:
 1304                    # Hello!
 1305
 1306                    def a():⋯
 1307
 1308                    def b():⋯
 1309
 1310
 1311                class Bar:
 1312                    # World!
 1313
 1314                    def a():⋯
 1315
 1316                    def b():⋯
 1317
 1318
 1319            "
 1320            .unindent(),
 1321        );
 1322
 1323        editor.fold_at_level(&FoldAtLevel(1), window, cx);
 1324        assert_eq!(
 1325            editor.display_text(cx),
 1326            "
 1327                class Foo:⋯
 1328
 1329
 1330                class Bar:⋯
 1331
 1332
 1333            "
 1334            .unindent(),
 1335        );
 1336
 1337        editor.unfold_all(&UnfoldAll, window, cx);
 1338        editor.fold_at_level(&FoldAtLevel(0), window, cx);
 1339        assert_eq!(
 1340            editor.display_text(cx),
 1341            "
 1342                class Foo:
 1343                    # Hello!
 1344
 1345                    def a():
 1346                        print(1)
 1347
 1348                    def b():
 1349                        print(2)
 1350
 1351
 1352                class Bar:
 1353                    # World!
 1354
 1355                    def a():
 1356                        print(1)
 1357
 1358                    def b():
 1359                        print(2)
 1360
 1361
 1362            "
 1363            .unindent(),
 1364        );
 1365
 1366        assert_eq!(
 1367            editor.display_text(cx),
 1368            editor.buffer.read(cx).read(cx).text()
 1369        );
 1370        let (_, positions) = marked_text_ranges(
 1371            &"
 1372                       class Foo:
 1373                           # Hello!
 1374
 1375                           def a():
 1376                              print(1)
 1377
 1378                           def b():
 1379                               p«riˇ»nt(2)
 1380
 1381
 1382                       class Bar:
 1383                           # World!
 1384
 1385                           def a():
 1386                               «ˇprint(1)
 1387
 1388                           def b():
 1389                               print(2)»
 1390
 1391
 1392                   "
 1393            .unindent(),
 1394            true,
 1395        );
 1396
 1397        editor.change_selections(SelectionEffects::default(), window, cx, |s| {
 1398            s.select_ranges(positions)
 1399        });
 1400
 1401        editor.fold_at_level(&FoldAtLevel(2), window, cx);
 1402        assert_eq!(
 1403            editor.display_text(cx),
 1404            "
 1405                class Foo:
 1406                    # Hello!
 1407
 1408                    def a():⋯
 1409
 1410                    def b():
 1411                        print(2)
 1412
 1413
 1414                class Bar:
 1415                    # World!
 1416
 1417                    def a():
 1418                        print(1)
 1419
 1420                    def b():
 1421                        print(2)
 1422
 1423
 1424            "
 1425            .unindent(),
 1426        );
 1427    });
 1428}
 1429
 1430#[gpui::test]
 1431fn test_move_cursor(cx: &mut TestAppContext) {
 1432    init_test(cx, |_| {});
 1433
 1434    let buffer = cx.update(|cx| MultiBuffer::build_simple(&sample_text(6, 6, 'a'), cx));
 1435    let editor = cx.add_window(|window, cx| build_editor(buffer.clone(), window, cx));
 1436
 1437    buffer.update(cx, |buffer, cx| {
 1438        buffer.edit(
 1439            vec![
 1440                (Point::new(1, 0)..Point::new(1, 0), "\t"),
 1441                (Point::new(1, 1)..Point::new(1, 1), "\t"),
 1442            ],
 1443            None,
 1444            cx,
 1445        );
 1446    });
 1447    _ = editor.update(cx, |editor, window, cx| {
 1448        assert_eq!(
 1449            editor.selections.display_ranges(cx),
 1450            &[DisplayPoint::new(DisplayRow(0), 0)..DisplayPoint::new(DisplayRow(0), 0)]
 1451        );
 1452
 1453        editor.move_down(&MoveDown, window, cx);
 1454        assert_eq!(
 1455            editor.selections.display_ranges(cx),
 1456            &[DisplayPoint::new(DisplayRow(1), 0)..DisplayPoint::new(DisplayRow(1), 0)]
 1457        );
 1458
 1459        editor.move_right(&MoveRight, window, cx);
 1460        assert_eq!(
 1461            editor.selections.display_ranges(cx),
 1462            &[DisplayPoint::new(DisplayRow(1), 4)..DisplayPoint::new(DisplayRow(1), 4)]
 1463        );
 1464
 1465        editor.move_left(&MoveLeft, window, cx);
 1466        assert_eq!(
 1467            editor.selections.display_ranges(cx),
 1468            &[DisplayPoint::new(DisplayRow(1), 0)..DisplayPoint::new(DisplayRow(1), 0)]
 1469        );
 1470
 1471        editor.move_up(&MoveUp, window, cx);
 1472        assert_eq!(
 1473            editor.selections.display_ranges(cx),
 1474            &[DisplayPoint::new(DisplayRow(0), 0)..DisplayPoint::new(DisplayRow(0), 0)]
 1475        );
 1476
 1477        editor.move_to_end(&MoveToEnd, window, cx);
 1478        assert_eq!(
 1479            editor.selections.display_ranges(cx),
 1480            &[DisplayPoint::new(DisplayRow(5), 6)..DisplayPoint::new(DisplayRow(5), 6)]
 1481        );
 1482
 1483        editor.move_to_beginning(&MoveToBeginning, window, cx);
 1484        assert_eq!(
 1485            editor.selections.display_ranges(cx),
 1486            &[DisplayPoint::new(DisplayRow(0), 0)..DisplayPoint::new(DisplayRow(0), 0)]
 1487        );
 1488
 1489        editor.change_selections(SelectionEffects::no_scroll(), window, cx, |s| {
 1490            s.select_display_ranges([
 1491                DisplayPoint::new(DisplayRow(0), 1)..DisplayPoint::new(DisplayRow(0), 2)
 1492            ]);
 1493        });
 1494        editor.select_to_beginning(&SelectToBeginning, window, cx);
 1495        assert_eq!(
 1496            editor.selections.display_ranges(cx),
 1497            &[DisplayPoint::new(DisplayRow(0), 1)..DisplayPoint::new(DisplayRow(0), 0)]
 1498        );
 1499
 1500        editor.select_to_end(&SelectToEnd, window, cx);
 1501        assert_eq!(
 1502            editor.selections.display_ranges(cx),
 1503            &[DisplayPoint::new(DisplayRow(0), 1)..DisplayPoint::new(DisplayRow(5), 6)]
 1504        );
 1505    });
 1506}
 1507
 1508#[gpui::test]
 1509fn test_move_cursor_multibyte(cx: &mut TestAppContext) {
 1510    init_test(cx, |_| {});
 1511
 1512    let editor = cx.add_window(|window, cx| {
 1513        let buffer = MultiBuffer::build_simple("🟥🟧🟨🟩🟦🟪\nabcde\nαβγδε", cx);
 1514        build_editor(buffer, window, cx)
 1515    });
 1516
 1517    assert_eq!('🟥'.len_utf8(), 4);
 1518    assert_eq!('α'.len_utf8(), 2);
 1519
 1520    _ = editor.update(cx, |editor, window, cx| {
 1521        editor.fold_creases(
 1522            vec![
 1523                Crease::simple(Point::new(0, 8)..Point::new(0, 16), FoldPlaceholder::test()),
 1524                Crease::simple(Point::new(1, 2)..Point::new(1, 4), FoldPlaceholder::test()),
 1525                Crease::simple(Point::new(2, 4)..Point::new(2, 8), FoldPlaceholder::test()),
 1526            ],
 1527            true,
 1528            window,
 1529            cx,
 1530        );
 1531        assert_eq!(editor.display_text(cx), "🟥🟧⋯🟦🟪\nab⋯e\nαβ⋯ε");
 1532
 1533        editor.move_right(&MoveRight, window, cx);
 1534        assert_eq!(
 1535            editor.selections.display_ranges(cx),
 1536            &[empty_range(0, "🟥".len())]
 1537        );
 1538        editor.move_right(&MoveRight, window, cx);
 1539        assert_eq!(
 1540            editor.selections.display_ranges(cx),
 1541            &[empty_range(0, "🟥🟧".len())]
 1542        );
 1543        editor.move_right(&MoveRight, window, cx);
 1544        assert_eq!(
 1545            editor.selections.display_ranges(cx),
 1546            &[empty_range(0, "🟥🟧⋯".len())]
 1547        );
 1548
 1549        editor.move_down(&MoveDown, window, cx);
 1550        assert_eq!(
 1551            editor.selections.display_ranges(cx),
 1552            &[empty_range(1, "ab⋯e".len())]
 1553        );
 1554        editor.move_left(&MoveLeft, window, cx);
 1555        assert_eq!(
 1556            editor.selections.display_ranges(cx),
 1557            &[empty_range(1, "ab⋯".len())]
 1558        );
 1559        editor.move_left(&MoveLeft, window, cx);
 1560        assert_eq!(
 1561            editor.selections.display_ranges(cx),
 1562            &[empty_range(1, "ab".len())]
 1563        );
 1564        editor.move_left(&MoveLeft, window, cx);
 1565        assert_eq!(
 1566            editor.selections.display_ranges(cx),
 1567            &[empty_range(1, "a".len())]
 1568        );
 1569
 1570        editor.move_down(&MoveDown, window, cx);
 1571        assert_eq!(
 1572            editor.selections.display_ranges(cx),
 1573            &[empty_range(2, "α".len())]
 1574        );
 1575        editor.move_right(&MoveRight, window, cx);
 1576        assert_eq!(
 1577            editor.selections.display_ranges(cx),
 1578            &[empty_range(2, "αβ".len())]
 1579        );
 1580        editor.move_right(&MoveRight, window, cx);
 1581        assert_eq!(
 1582            editor.selections.display_ranges(cx),
 1583            &[empty_range(2, "αβ⋯".len())]
 1584        );
 1585        editor.move_right(&MoveRight, window, cx);
 1586        assert_eq!(
 1587            editor.selections.display_ranges(cx),
 1588            &[empty_range(2, "αβ⋯ε".len())]
 1589        );
 1590
 1591        editor.move_up(&MoveUp, window, cx);
 1592        assert_eq!(
 1593            editor.selections.display_ranges(cx),
 1594            &[empty_range(1, "ab⋯e".len())]
 1595        );
 1596        editor.move_down(&MoveDown, window, cx);
 1597        assert_eq!(
 1598            editor.selections.display_ranges(cx),
 1599            &[empty_range(2, "αβ⋯ε".len())]
 1600        );
 1601        editor.move_up(&MoveUp, window, cx);
 1602        assert_eq!(
 1603            editor.selections.display_ranges(cx),
 1604            &[empty_range(1, "ab⋯e".len())]
 1605        );
 1606
 1607        editor.move_up(&MoveUp, window, cx);
 1608        assert_eq!(
 1609            editor.selections.display_ranges(cx),
 1610            &[empty_range(0, "🟥🟧".len())]
 1611        );
 1612        editor.move_left(&MoveLeft, window, cx);
 1613        assert_eq!(
 1614            editor.selections.display_ranges(cx),
 1615            &[empty_range(0, "🟥".len())]
 1616        );
 1617        editor.move_left(&MoveLeft, window, cx);
 1618        assert_eq!(
 1619            editor.selections.display_ranges(cx),
 1620            &[empty_range(0, "".len())]
 1621        );
 1622    });
 1623}
 1624
 1625#[gpui::test]
 1626fn test_move_cursor_different_line_lengths(cx: &mut TestAppContext) {
 1627    init_test(cx, |_| {});
 1628
 1629    let editor = cx.add_window(|window, cx| {
 1630        let buffer = MultiBuffer::build_simple("ⓐⓑⓒⓓⓔ\nabcd\nαβγ\nabcd\nⓐⓑⓒⓓⓔ\n", cx);
 1631        build_editor(buffer, window, cx)
 1632    });
 1633    _ = editor.update(cx, |editor, window, cx| {
 1634        editor.change_selections(SelectionEffects::no_scroll(), window, cx, |s| {
 1635            s.select_display_ranges([empty_range(0, "ⓐⓑⓒⓓⓔ".len())]);
 1636        });
 1637
 1638        // moving above start of document should move selection to start of document,
 1639        // but the next move down should still be at the original goal_x
 1640        editor.move_up(&MoveUp, window, cx);
 1641        assert_eq!(
 1642            editor.selections.display_ranges(cx),
 1643            &[empty_range(0, "".len())]
 1644        );
 1645
 1646        editor.move_down(&MoveDown, window, cx);
 1647        assert_eq!(
 1648            editor.selections.display_ranges(cx),
 1649            &[empty_range(1, "abcd".len())]
 1650        );
 1651
 1652        editor.move_down(&MoveDown, window, cx);
 1653        assert_eq!(
 1654            editor.selections.display_ranges(cx),
 1655            &[empty_range(2, "αβγ".len())]
 1656        );
 1657
 1658        editor.move_down(&MoveDown, window, cx);
 1659        assert_eq!(
 1660            editor.selections.display_ranges(cx),
 1661            &[empty_range(3, "abcd".len())]
 1662        );
 1663
 1664        editor.move_down(&MoveDown, window, cx);
 1665        assert_eq!(
 1666            editor.selections.display_ranges(cx),
 1667            &[empty_range(4, "ⓐⓑⓒⓓⓔ".len())]
 1668        );
 1669
 1670        // moving past end of document should not change goal_x
 1671        editor.move_down(&MoveDown, window, cx);
 1672        assert_eq!(
 1673            editor.selections.display_ranges(cx),
 1674            &[empty_range(5, "".len())]
 1675        );
 1676
 1677        editor.move_down(&MoveDown, window, cx);
 1678        assert_eq!(
 1679            editor.selections.display_ranges(cx),
 1680            &[empty_range(5, "".len())]
 1681        );
 1682
 1683        editor.move_up(&MoveUp, window, cx);
 1684        assert_eq!(
 1685            editor.selections.display_ranges(cx),
 1686            &[empty_range(4, "ⓐⓑⓒⓓⓔ".len())]
 1687        );
 1688
 1689        editor.move_up(&MoveUp, window, cx);
 1690        assert_eq!(
 1691            editor.selections.display_ranges(cx),
 1692            &[empty_range(3, "abcd".len())]
 1693        );
 1694
 1695        editor.move_up(&MoveUp, window, cx);
 1696        assert_eq!(
 1697            editor.selections.display_ranges(cx),
 1698            &[empty_range(2, "αβγ".len())]
 1699        );
 1700    });
 1701}
 1702
 1703#[gpui::test]
 1704fn test_beginning_end_of_line(cx: &mut TestAppContext) {
 1705    init_test(cx, |_| {});
 1706    let move_to_beg = MoveToBeginningOfLine {
 1707        stop_at_soft_wraps: true,
 1708        stop_at_indent: true,
 1709    };
 1710
 1711    let delete_to_beg = DeleteToBeginningOfLine {
 1712        stop_at_indent: false,
 1713    };
 1714
 1715    let move_to_end = MoveToEndOfLine {
 1716        stop_at_soft_wraps: true,
 1717    };
 1718
 1719    let editor = cx.add_window(|window, cx| {
 1720        let buffer = MultiBuffer::build_simple("abc\n  def", cx);
 1721        build_editor(buffer, window, cx)
 1722    });
 1723    _ = editor.update(cx, |editor, window, cx| {
 1724        editor.change_selections(SelectionEffects::no_scroll(), window, cx, |s| {
 1725            s.select_display_ranges([
 1726                DisplayPoint::new(DisplayRow(0), 1)..DisplayPoint::new(DisplayRow(0), 1),
 1727                DisplayPoint::new(DisplayRow(1), 4)..DisplayPoint::new(DisplayRow(1), 4),
 1728            ]);
 1729        });
 1730    });
 1731
 1732    _ = editor.update(cx, |editor, window, cx| {
 1733        editor.move_to_beginning_of_line(&move_to_beg, window, cx);
 1734        assert_eq!(
 1735            editor.selections.display_ranges(cx),
 1736            &[
 1737                DisplayPoint::new(DisplayRow(0), 0)..DisplayPoint::new(DisplayRow(0), 0),
 1738                DisplayPoint::new(DisplayRow(1), 2)..DisplayPoint::new(DisplayRow(1), 2),
 1739            ]
 1740        );
 1741    });
 1742
 1743    _ = editor.update(cx, |editor, window, cx| {
 1744        editor.move_to_beginning_of_line(&move_to_beg, window, cx);
 1745        assert_eq!(
 1746            editor.selections.display_ranges(cx),
 1747            &[
 1748                DisplayPoint::new(DisplayRow(0), 0)..DisplayPoint::new(DisplayRow(0), 0),
 1749                DisplayPoint::new(DisplayRow(1), 0)..DisplayPoint::new(DisplayRow(1), 0),
 1750            ]
 1751        );
 1752    });
 1753
 1754    _ = editor.update(cx, |editor, window, cx| {
 1755        editor.move_to_beginning_of_line(&move_to_beg, window, cx);
 1756        assert_eq!(
 1757            editor.selections.display_ranges(cx),
 1758            &[
 1759                DisplayPoint::new(DisplayRow(0), 0)..DisplayPoint::new(DisplayRow(0), 0),
 1760                DisplayPoint::new(DisplayRow(1), 2)..DisplayPoint::new(DisplayRow(1), 2),
 1761            ]
 1762        );
 1763    });
 1764
 1765    _ = editor.update(cx, |editor, window, cx| {
 1766        editor.move_to_end_of_line(&move_to_end, window, cx);
 1767        assert_eq!(
 1768            editor.selections.display_ranges(cx),
 1769            &[
 1770                DisplayPoint::new(DisplayRow(0), 3)..DisplayPoint::new(DisplayRow(0), 3),
 1771                DisplayPoint::new(DisplayRow(1), 5)..DisplayPoint::new(DisplayRow(1), 5),
 1772            ]
 1773        );
 1774    });
 1775
 1776    // Moving to the end of line again is a no-op.
 1777    _ = editor.update(cx, |editor, window, cx| {
 1778        editor.move_to_end_of_line(&move_to_end, window, cx);
 1779        assert_eq!(
 1780            editor.selections.display_ranges(cx),
 1781            &[
 1782                DisplayPoint::new(DisplayRow(0), 3)..DisplayPoint::new(DisplayRow(0), 3),
 1783                DisplayPoint::new(DisplayRow(1), 5)..DisplayPoint::new(DisplayRow(1), 5),
 1784            ]
 1785        );
 1786    });
 1787
 1788    _ = editor.update(cx, |editor, window, cx| {
 1789        editor.move_left(&MoveLeft, window, cx);
 1790        editor.select_to_beginning_of_line(
 1791            &SelectToBeginningOfLine {
 1792                stop_at_soft_wraps: true,
 1793                stop_at_indent: true,
 1794            },
 1795            window,
 1796            cx,
 1797        );
 1798        assert_eq!(
 1799            editor.selections.display_ranges(cx),
 1800            &[
 1801                DisplayPoint::new(DisplayRow(0), 2)..DisplayPoint::new(DisplayRow(0), 0),
 1802                DisplayPoint::new(DisplayRow(1), 4)..DisplayPoint::new(DisplayRow(1), 2),
 1803            ]
 1804        );
 1805    });
 1806
 1807    _ = editor.update(cx, |editor, window, cx| {
 1808        editor.select_to_beginning_of_line(
 1809            &SelectToBeginningOfLine {
 1810                stop_at_soft_wraps: true,
 1811                stop_at_indent: true,
 1812            },
 1813            window,
 1814            cx,
 1815        );
 1816        assert_eq!(
 1817            editor.selections.display_ranges(cx),
 1818            &[
 1819                DisplayPoint::new(DisplayRow(0), 2)..DisplayPoint::new(DisplayRow(0), 0),
 1820                DisplayPoint::new(DisplayRow(1), 4)..DisplayPoint::new(DisplayRow(1), 0),
 1821            ]
 1822        );
 1823    });
 1824
 1825    _ = editor.update(cx, |editor, window, cx| {
 1826        editor.select_to_beginning_of_line(
 1827            &SelectToBeginningOfLine {
 1828                stop_at_soft_wraps: true,
 1829                stop_at_indent: true,
 1830            },
 1831            window,
 1832            cx,
 1833        );
 1834        assert_eq!(
 1835            editor.selections.display_ranges(cx),
 1836            &[
 1837                DisplayPoint::new(DisplayRow(0), 2)..DisplayPoint::new(DisplayRow(0), 0),
 1838                DisplayPoint::new(DisplayRow(1), 4)..DisplayPoint::new(DisplayRow(1), 2),
 1839            ]
 1840        );
 1841    });
 1842
 1843    _ = editor.update(cx, |editor, window, cx| {
 1844        editor.select_to_end_of_line(
 1845            &SelectToEndOfLine {
 1846                stop_at_soft_wraps: true,
 1847            },
 1848            window,
 1849            cx,
 1850        );
 1851        assert_eq!(
 1852            editor.selections.display_ranges(cx),
 1853            &[
 1854                DisplayPoint::new(DisplayRow(0), 2)..DisplayPoint::new(DisplayRow(0), 3),
 1855                DisplayPoint::new(DisplayRow(1), 4)..DisplayPoint::new(DisplayRow(1), 5),
 1856            ]
 1857        );
 1858    });
 1859
 1860    _ = editor.update(cx, |editor, window, cx| {
 1861        editor.delete_to_end_of_line(&DeleteToEndOfLine, window, cx);
 1862        assert_eq!(editor.display_text(cx), "ab\n  de");
 1863        assert_eq!(
 1864            editor.selections.display_ranges(cx),
 1865            &[
 1866                DisplayPoint::new(DisplayRow(0), 2)..DisplayPoint::new(DisplayRow(0), 2),
 1867                DisplayPoint::new(DisplayRow(1), 4)..DisplayPoint::new(DisplayRow(1), 4),
 1868            ]
 1869        );
 1870    });
 1871
 1872    _ = editor.update(cx, |editor, window, cx| {
 1873        editor.delete_to_beginning_of_line(&delete_to_beg, window, cx);
 1874        assert_eq!(editor.display_text(cx), "\n");
 1875        assert_eq!(
 1876            editor.selections.display_ranges(cx),
 1877            &[
 1878                DisplayPoint::new(DisplayRow(0), 0)..DisplayPoint::new(DisplayRow(0), 0),
 1879                DisplayPoint::new(DisplayRow(1), 0)..DisplayPoint::new(DisplayRow(1), 0),
 1880            ]
 1881        );
 1882    });
 1883}
 1884
 1885#[gpui::test]
 1886fn test_beginning_end_of_line_ignore_soft_wrap(cx: &mut TestAppContext) {
 1887    init_test(cx, |_| {});
 1888    let move_to_beg = MoveToBeginningOfLine {
 1889        stop_at_soft_wraps: false,
 1890        stop_at_indent: false,
 1891    };
 1892
 1893    let move_to_end = MoveToEndOfLine {
 1894        stop_at_soft_wraps: false,
 1895    };
 1896
 1897    let editor = cx.add_window(|window, cx| {
 1898        let buffer = MultiBuffer::build_simple("thequickbrownfox\njumpedoverthelazydogs", cx);
 1899        build_editor(buffer, window, cx)
 1900    });
 1901
 1902    _ = editor.update(cx, |editor, window, cx| {
 1903        editor.set_wrap_width(Some(140.0.into()), cx);
 1904
 1905        // We expect the following lines after wrapping
 1906        // ```
 1907        // thequickbrownfox
 1908        // jumpedoverthelazydo
 1909        // gs
 1910        // ```
 1911        // The final `gs` was soft-wrapped onto a new line.
 1912        assert_eq!(
 1913            "thequickbrownfox\njumpedoverthelaz\nydogs",
 1914            editor.display_text(cx),
 1915        );
 1916
 1917        // First, let's assert behavior on the first line, that was not soft-wrapped.
 1918        // Start the cursor at the `k` on the first line
 1919        editor.change_selections(SelectionEffects::no_scroll(), window, cx, |s| {
 1920            s.select_display_ranges([
 1921                DisplayPoint::new(DisplayRow(0), 7)..DisplayPoint::new(DisplayRow(0), 7)
 1922            ]);
 1923        });
 1924
 1925        // Moving to the beginning of the line should put us at the beginning of the line.
 1926        editor.move_to_beginning_of_line(&move_to_beg, window, cx);
 1927        assert_eq!(
 1928            vec![DisplayPoint::new(DisplayRow(0), 0)..DisplayPoint::new(DisplayRow(0), 0),],
 1929            editor.selections.display_ranges(cx)
 1930        );
 1931
 1932        // Moving to the end of the line should put us at the end of the line.
 1933        editor.move_to_end_of_line(&move_to_end, window, cx);
 1934        assert_eq!(
 1935            vec![DisplayPoint::new(DisplayRow(0), 16)..DisplayPoint::new(DisplayRow(0), 16),],
 1936            editor.selections.display_ranges(cx)
 1937        );
 1938
 1939        // Now, let's assert behavior on the second line, that ended up being soft-wrapped.
 1940        // Start the cursor at the last line (`y` that was wrapped to a new line)
 1941        editor.change_selections(SelectionEffects::no_scroll(), window, cx, |s| {
 1942            s.select_display_ranges([
 1943                DisplayPoint::new(DisplayRow(2), 0)..DisplayPoint::new(DisplayRow(2), 0)
 1944            ]);
 1945        });
 1946
 1947        // Moving to the beginning of the line should put us at the start of the second line of
 1948        // display text, i.e., the `j`.
 1949        editor.move_to_beginning_of_line(&move_to_beg, window, cx);
 1950        assert_eq!(
 1951            vec![DisplayPoint::new(DisplayRow(1), 0)..DisplayPoint::new(DisplayRow(1), 0),],
 1952            editor.selections.display_ranges(cx)
 1953        );
 1954
 1955        // Moving to the beginning of the line again should be a no-op.
 1956        editor.move_to_beginning_of_line(&move_to_beg, window, cx);
 1957        assert_eq!(
 1958            vec![DisplayPoint::new(DisplayRow(1), 0)..DisplayPoint::new(DisplayRow(1), 0),],
 1959            editor.selections.display_ranges(cx)
 1960        );
 1961
 1962        // Moving to the end of the line should put us right after the `s` that was soft-wrapped to the
 1963        // next display line.
 1964        editor.move_to_end_of_line(&move_to_end, window, cx);
 1965        assert_eq!(
 1966            vec![DisplayPoint::new(DisplayRow(2), 5)..DisplayPoint::new(DisplayRow(2), 5),],
 1967            editor.selections.display_ranges(cx)
 1968        );
 1969
 1970        // Moving to the end of the line again should be a no-op.
 1971        editor.move_to_end_of_line(&move_to_end, window, cx);
 1972        assert_eq!(
 1973            vec![DisplayPoint::new(DisplayRow(2), 5)..DisplayPoint::new(DisplayRow(2), 5),],
 1974            editor.selections.display_ranges(cx)
 1975        );
 1976    });
 1977}
 1978
 1979#[gpui::test]
 1980fn test_beginning_of_line_stop_at_indent(cx: &mut TestAppContext) {
 1981    init_test(cx, |_| {});
 1982
 1983    let move_to_beg = MoveToBeginningOfLine {
 1984        stop_at_soft_wraps: true,
 1985        stop_at_indent: true,
 1986    };
 1987
 1988    let select_to_beg = SelectToBeginningOfLine {
 1989        stop_at_soft_wraps: true,
 1990        stop_at_indent: true,
 1991    };
 1992
 1993    let delete_to_beg = DeleteToBeginningOfLine {
 1994        stop_at_indent: true,
 1995    };
 1996
 1997    let move_to_end = MoveToEndOfLine {
 1998        stop_at_soft_wraps: false,
 1999    };
 2000
 2001    let editor = cx.add_window(|window, cx| {
 2002        let buffer = MultiBuffer::build_simple("abc\n  def", cx);
 2003        build_editor(buffer, window, cx)
 2004    });
 2005
 2006    _ = editor.update(cx, |editor, window, cx| {
 2007        editor.change_selections(SelectionEffects::no_scroll(), window, cx, |s| {
 2008            s.select_display_ranges([
 2009                DisplayPoint::new(DisplayRow(0), 1)..DisplayPoint::new(DisplayRow(0), 1),
 2010                DisplayPoint::new(DisplayRow(1), 4)..DisplayPoint::new(DisplayRow(1), 4),
 2011            ]);
 2012        });
 2013
 2014        // Moving to the beginning of the line should put the first cursor at the beginning of the line,
 2015        // and the second cursor at the first non-whitespace character in the line.
 2016        editor.move_to_beginning_of_line(&move_to_beg, window, cx);
 2017        assert_eq!(
 2018            editor.selections.display_ranges(cx),
 2019            &[
 2020                DisplayPoint::new(DisplayRow(0), 0)..DisplayPoint::new(DisplayRow(0), 0),
 2021                DisplayPoint::new(DisplayRow(1), 2)..DisplayPoint::new(DisplayRow(1), 2),
 2022            ]
 2023        );
 2024
 2025        // Moving to the beginning of the line again should be a no-op for the first cursor,
 2026        // and should move the second cursor to the beginning of the line.
 2027        editor.move_to_beginning_of_line(&move_to_beg, window, cx);
 2028        assert_eq!(
 2029            editor.selections.display_ranges(cx),
 2030            &[
 2031                DisplayPoint::new(DisplayRow(0), 0)..DisplayPoint::new(DisplayRow(0), 0),
 2032                DisplayPoint::new(DisplayRow(1), 0)..DisplayPoint::new(DisplayRow(1), 0),
 2033            ]
 2034        );
 2035
 2036        // Moving to the beginning of the line again should still be a no-op for the first cursor,
 2037        // and should move the second cursor back to the first non-whitespace character in the line.
 2038        editor.move_to_beginning_of_line(&move_to_beg, window, cx);
 2039        assert_eq!(
 2040            editor.selections.display_ranges(cx),
 2041            &[
 2042                DisplayPoint::new(DisplayRow(0), 0)..DisplayPoint::new(DisplayRow(0), 0),
 2043                DisplayPoint::new(DisplayRow(1), 2)..DisplayPoint::new(DisplayRow(1), 2),
 2044            ]
 2045        );
 2046
 2047        // Selecting to the beginning of the line should select to the beginning of the line for the first cursor,
 2048        // and to the first non-whitespace character in the line for the second cursor.
 2049        editor.move_to_end_of_line(&move_to_end, window, cx);
 2050        editor.move_left(&MoveLeft, window, cx);
 2051        editor.select_to_beginning_of_line(&select_to_beg, window, cx);
 2052        assert_eq!(
 2053            editor.selections.display_ranges(cx),
 2054            &[
 2055                DisplayPoint::new(DisplayRow(0), 2)..DisplayPoint::new(DisplayRow(0), 0),
 2056                DisplayPoint::new(DisplayRow(1), 4)..DisplayPoint::new(DisplayRow(1), 2),
 2057            ]
 2058        );
 2059
 2060        // Selecting to the beginning of the line again should be a no-op for the first cursor,
 2061        // and should select to the beginning of the line for the second cursor.
 2062        editor.select_to_beginning_of_line(&select_to_beg, window, cx);
 2063        assert_eq!(
 2064            editor.selections.display_ranges(cx),
 2065            &[
 2066                DisplayPoint::new(DisplayRow(0), 2)..DisplayPoint::new(DisplayRow(0), 0),
 2067                DisplayPoint::new(DisplayRow(1), 4)..DisplayPoint::new(DisplayRow(1), 0),
 2068            ]
 2069        );
 2070
 2071        // Deleting to the beginning of the line should delete to the beginning of the line for the first cursor,
 2072        // and should delete to the first non-whitespace character in the line for the second cursor.
 2073        editor.move_to_end_of_line(&move_to_end, window, cx);
 2074        editor.move_left(&MoveLeft, window, cx);
 2075        editor.delete_to_beginning_of_line(&delete_to_beg, window, cx);
 2076        assert_eq!(editor.text(cx), "c\n  f");
 2077    });
 2078}
 2079
 2080#[gpui::test]
 2081fn test_beginning_of_line_with_cursor_between_line_start_and_indent(cx: &mut TestAppContext) {
 2082    init_test(cx, |_| {});
 2083
 2084    let move_to_beg = MoveToBeginningOfLine {
 2085        stop_at_soft_wraps: true,
 2086        stop_at_indent: true,
 2087    };
 2088
 2089    let editor = cx.add_window(|window, cx| {
 2090        let buffer = MultiBuffer::build_simple("    hello\nworld", cx);
 2091        build_editor(buffer, window, cx)
 2092    });
 2093
 2094    _ = editor.update(cx, |editor, window, cx| {
 2095        // test cursor between line_start and indent_start
 2096        editor.change_selections(SelectionEffects::no_scroll(), window, cx, |s| {
 2097            s.select_display_ranges([
 2098                DisplayPoint::new(DisplayRow(0), 3)..DisplayPoint::new(DisplayRow(0), 3)
 2099            ]);
 2100        });
 2101
 2102        // cursor should move to line_start
 2103        editor.move_to_beginning_of_line(&move_to_beg, window, cx);
 2104        assert_eq!(
 2105            editor.selections.display_ranges(cx),
 2106            &[DisplayPoint::new(DisplayRow(0), 0)..DisplayPoint::new(DisplayRow(0), 0)]
 2107        );
 2108
 2109        // cursor should move to indent_start
 2110        editor.move_to_beginning_of_line(&move_to_beg, window, cx);
 2111        assert_eq!(
 2112            editor.selections.display_ranges(cx),
 2113            &[DisplayPoint::new(DisplayRow(0), 4)..DisplayPoint::new(DisplayRow(0), 4)]
 2114        );
 2115
 2116        // cursor should move to back to line_start
 2117        editor.move_to_beginning_of_line(&move_to_beg, window, cx);
 2118        assert_eq!(
 2119            editor.selections.display_ranges(cx),
 2120            &[DisplayPoint::new(DisplayRow(0), 0)..DisplayPoint::new(DisplayRow(0), 0)]
 2121        );
 2122    });
 2123}
 2124
 2125#[gpui::test]
 2126fn test_prev_next_word_boundary(cx: &mut TestAppContext) {
 2127    init_test(cx, |_| {});
 2128
 2129    let editor = cx.add_window(|window, cx| {
 2130        let buffer = MultiBuffer::build_simple("use std::str::{foo, bar}\n\n  {baz.qux()}", cx);
 2131        build_editor(buffer, window, cx)
 2132    });
 2133    _ = editor.update(cx, |editor, window, cx| {
 2134        editor.change_selections(SelectionEffects::no_scroll(), window, cx, |s| {
 2135            s.select_display_ranges([
 2136                DisplayPoint::new(DisplayRow(0), 11)..DisplayPoint::new(DisplayRow(0), 11),
 2137                DisplayPoint::new(DisplayRow(2), 4)..DisplayPoint::new(DisplayRow(2), 4),
 2138            ])
 2139        });
 2140        editor.move_to_previous_word_start(&MoveToPreviousWordStart, window, cx);
 2141        assert_selection_ranges("use std::ˇstr::{foo, bar}\n\n  {ˇbaz.qux()}", editor, cx);
 2142
 2143        editor.move_to_previous_word_start(&MoveToPreviousWordStart, window, cx);
 2144        assert_selection_ranges("use stdˇ::str::{foo, bar}\n\nˇ  {baz.qux()}", editor, cx);
 2145
 2146        editor.move_to_previous_word_start(&MoveToPreviousWordStart, window, cx);
 2147        assert_selection_ranges("use ˇstd::str::{foo, bar}\nˇ\n  {baz.qux()}", editor, cx);
 2148
 2149        editor.move_to_previous_word_start(&MoveToPreviousWordStart, window, cx);
 2150        assert_selection_ranges("ˇuse std::str::{foo, barˇ}\n\n  {baz.qux()}", editor, cx);
 2151
 2152        editor.move_to_previous_word_start(&MoveToPreviousWordStart, window, cx);
 2153        assert_selection_ranges("ˇuse std::str::{foo, ˇbar}\n\n  {baz.qux()}", editor, cx);
 2154
 2155        editor.move_to_next_word_end(&MoveToNextWordEnd, window, cx);
 2156        assert_selection_ranges("useˇ std::str::{foo, barˇ}\n\n  {baz.qux()}", editor, cx);
 2157
 2158        editor.move_to_next_word_end(&MoveToNextWordEnd, window, cx);
 2159        assert_selection_ranges("use stdˇ::str::{foo, bar}ˇ\n\n  {baz.qux()}", editor, cx);
 2160
 2161        editor.move_to_next_word_end(&MoveToNextWordEnd, window, cx);
 2162        assert_selection_ranges("use std::ˇstr::{foo, bar}\nˇ\n  {baz.qux()}", editor, cx);
 2163
 2164        editor.move_right(&MoveRight, window, cx);
 2165        editor.select_to_previous_word_start(&SelectToPreviousWordStart, window, cx);
 2166        assert_selection_ranges(
 2167            "use std::«ˇs»tr::{foo, bar}\n«ˇ\n»  {baz.qux()}",
 2168            editor,
 2169            cx,
 2170        );
 2171
 2172        editor.select_to_previous_word_start(&SelectToPreviousWordStart, window, cx);
 2173        assert_selection_ranges(
 2174            "use std«ˇ::s»tr::{foo, bar«ˇ}\n\n»  {baz.qux()}",
 2175            editor,
 2176            cx,
 2177        );
 2178
 2179        editor.select_to_next_word_end(&SelectToNextWordEnd, window, cx);
 2180        assert_selection_ranges(
 2181            "use std::«ˇs»tr::{foo, bar}«ˇ\n\n»  {baz.qux()}",
 2182            editor,
 2183            cx,
 2184        );
 2185    });
 2186}
 2187
 2188#[gpui::test]
 2189fn test_prev_next_word_bounds_with_soft_wrap(cx: &mut TestAppContext) {
 2190    init_test(cx, |_| {});
 2191
 2192    let editor = cx.add_window(|window, cx| {
 2193        let buffer = MultiBuffer::build_simple("use one::{\n    two::three::four::five\n};", cx);
 2194        build_editor(buffer, window, cx)
 2195    });
 2196
 2197    _ = editor.update(cx, |editor, window, cx| {
 2198        editor.set_wrap_width(Some(140.0.into()), cx);
 2199        assert_eq!(
 2200            editor.display_text(cx),
 2201            "use one::{\n    two::three::\n    four::five\n};"
 2202        );
 2203
 2204        editor.change_selections(SelectionEffects::no_scroll(), window, cx, |s| {
 2205            s.select_display_ranges([
 2206                DisplayPoint::new(DisplayRow(1), 7)..DisplayPoint::new(DisplayRow(1), 7)
 2207            ]);
 2208        });
 2209
 2210        editor.move_to_next_word_end(&MoveToNextWordEnd, window, cx);
 2211        assert_eq!(
 2212            editor.selections.display_ranges(cx),
 2213            &[DisplayPoint::new(DisplayRow(1), 9)..DisplayPoint::new(DisplayRow(1), 9)]
 2214        );
 2215
 2216        editor.move_to_next_word_end(&MoveToNextWordEnd, window, cx);
 2217        assert_eq!(
 2218            editor.selections.display_ranges(cx),
 2219            &[DisplayPoint::new(DisplayRow(1), 14)..DisplayPoint::new(DisplayRow(1), 14)]
 2220        );
 2221
 2222        editor.move_to_next_word_end(&MoveToNextWordEnd, window, cx);
 2223        assert_eq!(
 2224            editor.selections.display_ranges(cx),
 2225            &[DisplayPoint::new(DisplayRow(2), 4)..DisplayPoint::new(DisplayRow(2), 4)]
 2226        );
 2227
 2228        editor.move_to_next_word_end(&MoveToNextWordEnd, window, cx);
 2229        assert_eq!(
 2230            editor.selections.display_ranges(cx),
 2231            &[DisplayPoint::new(DisplayRow(2), 8)..DisplayPoint::new(DisplayRow(2), 8)]
 2232        );
 2233
 2234        editor.move_to_previous_word_start(&MoveToPreviousWordStart, window, cx);
 2235        assert_eq!(
 2236            editor.selections.display_ranges(cx),
 2237            &[DisplayPoint::new(DisplayRow(2), 4)..DisplayPoint::new(DisplayRow(2), 4)]
 2238        );
 2239
 2240        editor.move_to_previous_word_start(&MoveToPreviousWordStart, window, cx);
 2241        assert_eq!(
 2242            editor.selections.display_ranges(cx),
 2243            &[DisplayPoint::new(DisplayRow(1), 14)..DisplayPoint::new(DisplayRow(1), 14)]
 2244        );
 2245    });
 2246}
 2247
 2248#[gpui::test]
 2249async fn test_move_start_of_paragraph_end_of_paragraph(cx: &mut TestAppContext) {
 2250    init_test(cx, |_| {});
 2251    let mut cx = EditorTestContext::new(cx).await;
 2252
 2253    let line_height = cx.editor(|editor, window, _| {
 2254        editor
 2255            .style()
 2256            .unwrap()
 2257            .text
 2258            .line_height_in_pixels(window.rem_size())
 2259    });
 2260    cx.simulate_window_resize(cx.window, size(px(100.), 4. * line_height));
 2261
 2262    cx.set_state(
 2263        &r#"ˇone
 2264        two
 2265
 2266        three
 2267        fourˇ
 2268        five
 2269
 2270        six"#
 2271            .unindent(),
 2272    );
 2273
 2274    cx.update_editor(|editor, window, cx| {
 2275        editor.move_to_end_of_paragraph(&MoveToEndOfParagraph, window, cx)
 2276    });
 2277    cx.assert_editor_state(
 2278        &r#"one
 2279        two
 2280        ˇ
 2281        three
 2282        four
 2283        five
 2284        ˇ
 2285        six"#
 2286            .unindent(),
 2287    );
 2288
 2289    cx.update_editor(|editor, window, cx| {
 2290        editor.move_to_end_of_paragraph(&MoveToEndOfParagraph, window, cx)
 2291    });
 2292    cx.assert_editor_state(
 2293        &r#"one
 2294        two
 2295
 2296        three
 2297        four
 2298        five
 2299        ˇ
 2300        sixˇ"#
 2301            .unindent(),
 2302    );
 2303
 2304    cx.update_editor(|editor, window, cx| {
 2305        editor.move_to_end_of_paragraph(&MoveToEndOfParagraph, window, cx)
 2306    });
 2307    cx.assert_editor_state(
 2308        &r#"one
 2309        two
 2310
 2311        three
 2312        four
 2313        five
 2314
 2315        sixˇ"#
 2316            .unindent(),
 2317    );
 2318
 2319    cx.update_editor(|editor, window, cx| {
 2320        editor.move_to_start_of_paragraph(&MoveToStartOfParagraph, window, cx)
 2321    });
 2322    cx.assert_editor_state(
 2323        &r#"one
 2324        two
 2325
 2326        three
 2327        four
 2328        five
 2329        ˇ
 2330        six"#
 2331            .unindent(),
 2332    );
 2333
 2334    cx.update_editor(|editor, window, cx| {
 2335        editor.move_to_start_of_paragraph(&MoveToStartOfParagraph, window, cx)
 2336    });
 2337    cx.assert_editor_state(
 2338        &r#"one
 2339        two
 2340        ˇ
 2341        three
 2342        four
 2343        five
 2344
 2345        six"#
 2346            .unindent(),
 2347    );
 2348
 2349    cx.update_editor(|editor, window, cx| {
 2350        editor.move_to_start_of_paragraph(&MoveToStartOfParagraph, window, cx)
 2351    });
 2352    cx.assert_editor_state(
 2353        &r#"ˇone
 2354        two
 2355
 2356        three
 2357        four
 2358        five
 2359
 2360        six"#
 2361            .unindent(),
 2362    );
 2363}
 2364
 2365#[gpui::test]
 2366async fn test_scroll_page_up_page_down(cx: &mut TestAppContext) {
 2367    init_test(cx, |_| {});
 2368    let mut cx = EditorTestContext::new(cx).await;
 2369    let line_height = cx.editor(|editor, window, _| {
 2370        editor
 2371            .style()
 2372            .unwrap()
 2373            .text
 2374            .line_height_in_pixels(window.rem_size())
 2375    });
 2376    let window = cx.window;
 2377    cx.simulate_window_resize(window, size(px(1000.), 4. * line_height + px(0.5)));
 2378
 2379    cx.set_state(
 2380        r#"ˇone
 2381        two
 2382        three
 2383        four
 2384        five
 2385        six
 2386        seven
 2387        eight
 2388        nine
 2389        ten
 2390        "#,
 2391    );
 2392
 2393    cx.update_editor(|editor, window, cx| {
 2394        assert_eq!(
 2395            editor.snapshot(window, cx).scroll_position(),
 2396            gpui::Point::new(0., 0.)
 2397        );
 2398        editor.scroll_screen(&ScrollAmount::Page(1.), window, cx);
 2399        assert_eq!(
 2400            editor.snapshot(window, cx).scroll_position(),
 2401            gpui::Point::new(0., 3.)
 2402        );
 2403        editor.scroll_screen(&ScrollAmount::Page(1.), window, cx);
 2404        assert_eq!(
 2405            editor.snapshot(window, cx).scroll_position(),
 2406            gpui::Point::new(0., 6.)
 2407        );
 2408        editor.scroll_screen(&ScrollAmount::Page(-1.), window, cx);
 2409        assert_eq!(
 2410            editor.snapshot(window, cx).scroll_position(),
 2411            gpui::Point::new(0., 3.)
 2412        );
 2413
 2414        editor.scroll_screen(&ScrollAmount::Page(-0.5), window, cx);
 2415        assert_eq!(
 2416            editor.snapshot(window, cx).scroll_position(),
 2417            gpui::Point::new(0., 1.)
 2418        );
 2419        editor.scroll_screen(&ScrollAmount::Page(0.5), window, cx);
 2420        assert_eq!(
 2421            editor.snapshot(window, cx).scroll_position(),
 2422            gpui::Point::new(0., 3.)
 2423        );
 2424    });
 2425}
 2426
 2427#[gpui::test]
 2428async fn test_autoscroll(cx: &mut TestAppContext) {
 2429    init_test(cx, |_| {});
 2430    let mut cx = EditorTestContext::new(cx).await;
 2431
 2432    let line_height = cx.update_editor(|editor, window, cx| {
 2433        editor.set_vertical_scroll_margin(2, cx);
 2434        editor
 2435            .style()
 2436            .unwrap()
 2437            .text
 2438            .line_height_in_pixels(window.rem_size())
 2439    });
 2440    let window = cx.window;
 2441    cx.simulate_window_resize(window, size(px(1000.), 6. * line_height));
 2442
 2443    cx.set_state(
 2444        r#"ˇone
 2445            two
 2446            three
 2447            four
 2448            five
 2449            six
 2450            seven
 2451            eight
 2452            nine
 2453            ten
 2454        "#,
 2455    );
 2456    cx.update_editor(|editor, window, cx| {
 2457        assert_eq!(
 2458            editor.snapshot(window, cx).scroll_position(),
 2459            gpui::Point::new(0., 0.0)
 2460        );
 2461    });
 2462
 2463    // Add a cursor below the visible area. Since both cursors cannot fit
 2464    // on screen, the editor autoscrolls to reveal the newest cursor, and
 2465    // allows the vertical scroll margin below that cursor.
 2466    cx.update_editor(|editor, window, cx| {
 2467        editor.change_selections(Default::default(), window, cx, |selections| {
 2468            selections.select_ranges([
 2469                Point::new(0, 0)..Point::new(0, 0),
 2470                Point::new(6, 0)..Point::new(6, 0),
 2471            ]);
 2472        })
 2473    });
 2474    cx.update_editor(|editor, window, cx| {
 2475        assert_eq!(
 2476            editor.snapshot(window, cx).scroll_position(),
 2477            gpui::Point::new(0., 3.0)
 2478        );
 2479    });
 2480
 2481    // Move down. The editor cursor scrolls down to track the newest cursor.
 2482    cx.update_editor(|editor, window, cx| {
 2483        editor.move_down(&Default::default(), window, cx);
 2484    });
 2485    cx.update_editor(|editor, window, cx| {
 2486        assert_eq!(
 2487            editor.snapshot(window, cx).scroll_position(),
 2488            gpui::Point::new(0., 4.0)
 2489        );
 2490    });
 2491
 2492    // Add a cursor above the visible area. Since both cursors fit on screen,
 2493    // the editor scrolls to show both.
 2494    cx.update_editor(|editor, window, cx| {
 2495        editor.change_selections(Default::default(), window, cx, |selections| {
 2496            selections.select_ranges([
 2497                Point::new(1, 0)..Point::new(1, 0),
 2498                Point::new(6, 0)..Point::new(6, 0),
 2499            ]);
 2500        })
 2501    });
 2502    cx.update_editor(|editor, window, cx| {
 2503        assert_eq!(
 2504            editor.snapshot(window, cx).scroll_position(),
 2505            gpui::Point::new(0., 1.0)
 2506        );
 2507    });
 2508}
 2509
 2510#[gpui::test]
 2511async fn test_move_page_up_page_down(cx: &mut TestAppContext) {
 2512    init_test(cx, |_| {});
 2513    let mut cx = EditorTestContext::new(cx).await;
 2514
 2515    let line_height = cx.editor(|editor, window, _cx| {
 2516        editor
 2517            .style()
 2518            .unwrap()
 2519            .text
 2520            .line_height_in_pixels(window.rem_size())
 2521    });
 2522    let window = cx.window;
 2523    cx.simulate_window_resize(window, size(px(100.), 4. * line_height));
 2524    cx.set_state(
 2525        &r#"
 2526        ˇone
 2527        two
 2528        threeˇ
 2529        four
 2530        five
 2531        six
 2532        seven
 2533        eight
 2534        nine
 2535        ten
 2536        "#
 2537        .unindent(),
 2538    );
 2539
 2540    cx.update_editor(|editor, window, cx| {
 2541        editor.move_page_down(&MovePageDown::default(), window, cx)
 2542    });
 2543    cx.assert_editor_state(
 2544        &r#"
 2545        one
 2546        two
 2547        three
 2548        ˇfour
 2549        five
 2550        sixˇ
 2551        seven
 2552        eight
 2553        nine
 2554        ten
 2555        "#
 2556        .unindent(),
 2557    );
 2558
 2559    cx.update_editor(|editor, window, cx| {
 2560        editor.move_page_down(&MovePageDown::default(), window, cx)
 2561    });
 2562    cx.assert_editor_state(
 2563        &r#"
 2564        one
 2565        two
 2566        three
 2567        four
 2568        five
 2569        six
 2570        ˇseven
 2571        eight
 2572        nineˇ
 2573        ten
 2574        "#
 2575        .unindent(),
 2576    );
 2577
 2578    cx.update_editor(|editor, window, cx| editor.move_page_up(&MovePageUp::default(), window, cx));
 2579    cx.assert_editor_state(
 2580        &r#"
 2581        one
 2582        two
 2583        three
 2584        ˇfour
 2585        five
 2586        sixˇ
 2587        seven
 2588        eight
 2589        nine
 2590        ten
 2591        "#
 2592        .unindent(),
 2593    );
 2594
 2595    cx.update_editor(|editor, window, cx| editor.move_page_up(&MovePageUp::default(), window, cx));
 2596    cx.assert_editor_state(
 2597        &r#"
 2598        ˇone
 2599        two
 2600        threeˇ
 2601        four
 2602        five
 2603        six
 2604        seven
 2605        eight
 2606        nine
 2607        ten
 2608        "#
 2609        .unindent(),
 2610    );
 2611
 2612    // Test select collapsing
 2613    cx.update_editor(|editor, window, cx| {
 2614        editor.move_page_down(&MovePageDown::default(), window, cx);
 2615        editor.move_page_down(&MovePageDown::default(), window, cx);
 2616        editor.move_page_down(&MovePageDown::default(), window, cx);
 2617    });
 2618    cx.assert_editor_state(
 2619        &r#"
 2620        one
 2621        two
 2622        three
 2623        four
 2624        five
 2625        six
 2626        seven
 2627        eight
 2628        nine
 2629        ˇten
 2630        ˇ"#
 2631        .unindent(),
 2632    );
 2633}
 2634
 2635#[gpui::test]
 2636async fn test_delete_to_beginning_of_line(cx: &mut TestAppContext) {
 2637    init_test(cx, |_| {});
 2638    let mut cx = EditorTestContext::new(cx).await;
 2639    cx.set_state("one «two threeˇ» four");
 2640    cx.update_editor(|editor, window, cx| {
 2641        editor.delete_to_beginning_of_line(
 2642            &DeleteToBeginningOfLine {
 2643                stop_at_indent: false,
 2644            },
 2645            window,
 2646            cx,
 2647        );
 2648        assert_eq!(editor.text(cx), " four");
 2649    });
 2650}
 2651
 2652#[gpui::test]
 2653async fn test_delete_to_word_boundary(cx: &mut TestAppContext) {
 2654    init_test(cx, |_| {});
 2655
 2656    let mut cx = EditorTestContext::new(cx).await;
 2657
 2658    // For an empty selection, the preceding word fragment is deleted.
 2659    // For non-empty selections, only selected characters are deleted.
 2660    cx.set_state("onˇe two t«hreˇ»e four");
 2661    cx.update_editor(|editor, window, cx| {
 2662        editor.delete_to_previous_word_start(
 2663            &DeleteToPreviousWordStart {
 2664                ignore_newlines: false,
 2665                ignore_brackets: false,
 2666            },
 2667            window,
 2668            cx,
 2669        );
 2670    });
 2671    cx.assert_editor_state("ˇe two tˇe four");
 2672
 2673    cx.set_state("e tˇwo te «fˇ»our");
 2674    cx.update_editor(|editor, window, cx| {
 2675        editor.delete_to_next_word_end(
 2676            &DeleteToNextWordEnd {
 2677                ignore_newlines: false,
 2678                ignore_brackets: false,
 2679            },
 2680            window,
 2681            cx,
 2682        );
 2683    });
 2684    cx.assert_editor_state("e tˇ te ˇour");
 2685}
 2686
 2687#[gpui::test]
 2688async fn test_delete_whitespaces(cx: &mut TestAppContext) {
 2689    init_test(cx, |_| {});
 2690
 2691    let mut cx = EditorTestContext::new(cx).await;
 2692
 2693    cx.set_state("here is some text    ˇwith a space");
 2694    cx.update_editor(|editor, window, cx| {
 2695        editor.delete_to_previous_word_start(
 2696            &DeleteToPreviousWordStart {
 2697                ignore_newlines: false,
 2698                ignore_brackets: true,
 2699            },
 2700            window,
 2701            cx,
 2702        );
 2703    });
 2704    // Continuous whitespace sequences are removed entirely, words behind them are not affected by the deletion action.
 2705    cx.assert_editor_state("here is some textˇwith a space");
 2706
 2707    cx.set_state("here is some text    ˇwith a space");
 2708    cx.update_editor(|editor, window, cx| {
 2709        editor.delete_to_previous_word_start(
 2710            &DeleteToPreviousWordStart {
 2711                ignore_newlines: false,
 2712                ignore_brackets: false,
 2713            },
 2714            window,
 2715            cx,
 2716        );
 2717    });
 2718    cx.assert_editor_state("here is some textˇwith a space");
 2719
 2720    cx.set_state("here is some textˇ    with a space");
 2721    cx.update_editor(|editor, window, cx| {
 2722        editor.delete_to_next_word_end(
 2723            &DeleteToNextWordEnd {
 2724                ignore_newlines: false,
 2725                ignore_brackets: true,
 2726            },
 2727            window,
 2728            cx,
 2729        );
 2730    });
 2731    // Same happens in the other direction.
 2732    cx.assert_editor_state("here is some textˇwith a space");
 2733
 2734    cx.set_state("here is some textˇ    with a space");
 2735    cx.update_editor(|editor, window, cx| {
 2736        editor.delete_to_next_word_end(
 2737            &DeleteToNextWordEnd {
 2738                ignore_newlines: false,
 2739                ignore_brackets: false,
 2740            },
 2741            window,
 2742            cx,
 2743        );
 2744    });
 2745    cx.assert_editor_state("here is some textˇwith a space");
 2746
 2747    cx.set_state("here is some textˇ    with a space");
 2748    cx.update_editor(|editor, window, cx| {
 2749        editor.delete_to_next_word_end(
 2750            &DeleteToNextWordEnd {
 2751                ignore_newlines: true,
 2752                ignore_brackets: false,
 2753            },
 2754            window,
 2755            cx,
 2756        );
 2757    });
 2758    cx.assert_editor_state("here is some textˇwith a space");
 2759    cx.update_editor(|editor, window, cx| {
 2760        editor.delete_to_previous_word_start(
 2761            &DeleteToPreviousWordStart {
 2762                ignore_newlines: true,
 2763                ignore_brackets: false,
 2764            },
 2765            window,
 2766            cx,
 2767        );
 2768    });
 2769    cx.assert_editor_state("here is some ˇwith a space");
 2770    cx.update_editor(|editor, window, cx| {
 2771        editor.delete_to_previous_word_start(
 2772            &DeleteToPreviousWordStart {
 2773                ignore_newlines: true,
 2774                ignore_brackets: false,
 2775            },
 2776            window,
 2777            cx,
 2778        );
 2779    });
 2780    // Single whitespaces are removed with the word behind them.
 2781    cx.assert_editor_state("here is ˇwith a space");
 2782    cx.update_editor(|editor, window, cx| {
 2783        editor.delete_to_previous_word_start(
 2784            &DeleteToPreviousWordStart {
 2785                ignore_newlines: true,
 2786                ignore_brackets: false,
 2787            },
 2788            window,
 2789            cx,
 2790        );
 2791    });
 2792    cx.assert_editor_state("here ˇwith a space");
 2793    cx.update_editor(|editor, window, cx| {
 2794        editor.delete_to_previous_word_start(
 2795            &DeleteToPreviousWordStart {
 2796                ignore_newlines: true,
 2797                ignore_brackets: false,
 2798            },
 2799            window,
 2800            cx,
 2801        );
 2802    });
 2803    cx.assert_editor_state("ˇwith a space");
 2804    cx.update_editor(|editor, window, cx| {
 2805        editor.delete_to_previous_word_start(
 2806            &DeleteToPreviousWordStart {
 2807                ignore_newlines: true,
 2808                ignore_brackets: false,
 2809            },
 2810            window,
 2811            cx,
 2812        );
 2813    });
 2814    cx.assert_editor_state("ˇwith a space");
 2815    cx.update_editor(|editor, window, cx| {
 2816        editor.delete_to_next_word_end(
 2817            &DeleteToNextWordEnd {
 2818                ignore_newlines: true,
 2819                ignore_brackets: false,
 2820            },
 2821            window,
 2822            cx,
 2823        );
 2824    });
 2825    // Same happens in the other direction.
 2826    cx.assert_editor_state("ˇ a space");
 2827    cx.update_editor(|editor, window, cx| {
 2828        editor.delete_to_next_word_end(
 2829            &DeleteToNextWordEnd {
 2830                ignore_newlines: true,
 2831                ignore_brackets: false,
 2832            },
 2833            window,
 2834            cx,
 2835        );
 2836    });
 2837    cx.assert_editor_state("ˇ space");
 2838    cx.update_editor(|editor, window, cx| {
 2839        editor.delete_to_next_word_end(
 2840            &DeleteToNextWordEnd {
 2841                ignore_newlines: true,
 2842                ignore_brackets: false,
 2843            },
 2844            window,
 2845            cx,
 2846        );
 2847    });
 2848    cx.assert_editor_state("ˇ");
 2849    cx.update_editor(|editor, window, cx| {
 2850        editor.delete_to_next_word_end(
 2851            &DeleteToNextWordEnd {
 2852                ignore_newlines: true,
 2853                ignore_brackets: false,
 2854            },
 2855            window,
 2856            cx,
 2857        );
 2858    });
 2859    cx.assert_editor_state("ˇ");
 2860    cx.update_editor(|editor, window, cx| {
 2861        editor.delete_to_previous_word_start(
 2862            &DeleteToPreviousWordStart {
 2863                ignore_newlines: true,
 2864                ignore_brackets: false,
 2865            },
 2866            window,
 2867            cx,
 2868        );
 2869    });
 2870    cx.assert_editor_state("ˇ");
 2871}
 2872
 2873#[gpui::test]
 2874async fn test_delete_to_bracket(cx: &mut TestAppContext) {
 2875    init_test(cx, |_| {});
 2876
 2877    let language = Arc::new(
 2878        Language::new(
 2879            LanguageConfig {
 2880                brackets: BracketPairConfig {
 2881                    pairs: vec![
 2882                        BracketPair {
 2883                            start: "\"".to_string(),
 2884                            end: "\"".to_string(),
 2885                            close: true,
 2886                            surround: true,
 2887                            newline: false,
 2888                        },
 2889                        BracketPair {
 2890                            start: "(".to_string(),
 2891                            end: ")".to_string(),
 2892                            close: true,
 2893                            surround: true,
 2894                            newline: true,
 2895                        },
 2896                    ],
 2897                    ..BracketPairConfig::default()
 2898                },
 2899                ..LanguageConfig::default()
 2900            },
 2901            Some(tree_sitter_rust::LANGUAGE.into()),
 2902        )
 2903        .with_brackets_query(
 2904            r#"
 2905                ("(" @open ")" @close)
 2906                ("\"" @open "\"" @close)
 2907            "#,
 2908        )
 2909        .unwrap(),
 2910    );
 2911
 2912    let mut cx = EditorTestContext::new(cx).await;
 2913    cx.update_buffer(|buffer, cx| buffer.set_language(Some(language), cx));
 2914
 2915    cx.set_state(r#"macro!("// ˇCOMMENT");"#);
 2916    cx.update_editor(|editor, window, cx| {
 2917        editor.delete_to_previous_word_start(
 2918            &DeleteToPreviousWordStart {
 2919                ignore_newlines: true,
 2920                ignore_brackets: false,
 2921            },
 2922            window,
 2923            cx,
 2924        );
 2925    });
 2926    // Deletion stops before brackets if asked to not ignore them.
 2927    cx.assert_editor_state(r#"macro!("ˇCOMMENT");"#);
 2928    cx.update_editor(|editor, window, cx| {
 2929        editor.delete_to_previous_word_start(
 2930            &DeleteToPreviousWordStart {
 2931                ignore_newlines: true,
 2932                ignore_brackets: false,
 2933            },
 2934            window,
 2935            cx,
 2936        );
 2937    });
 2938    // Deletion has to remove a single bracket and then stop again.
 2939    cx.assert_editor_state(r#"macro!(ˇCOMMENT");"#);
 2940
 2941    cx.update_editor(|editor, window, cx| {
 2942        editor.delete_to_previous_word_start(
 2943            &DeleteToPreviousWordStart {
 2944                ignore_newlines: true,
 2945                ignore_brackets: false,
 2946            },
 2947            window,
 2948            cx,
 2949        );
 2950    });
 2951    cx.assert_editor_state(r#"macro!ˇCOMMENT");"#);
 2952
 2953    cx.update_editor(|editor, window, cx| {
 2954        editor.delete_to_previous_word_start(
 2955            &DeleteToPreviousWordStart {
 2956                ignore_newlines: true,
 2957                ignore_brackets: false,
 2958            },
 2959            window,
 2960            cx,
 2961        );
 2962    });
 2963    cx.assert_editor_state(r#"ˇCOMMENT");"#);
 2964
 2965    cx.update_editor(|editor, window, cx| {
 2966        editor.delete_to_previous_word_start(
 2967            &DeleteToPreviousWordStart {
 2968                ignore_newlines: true,
 2969                ignore_brackets: false,
 2970            },
 2971            window,
 2972            cx,
 2973        );
 2974    });
 2975    cx.assert_editor_state(r#"ˇCOMMENT");"#);
 2976
 2977    cx.update_editor(|editor, window, cx| {
 2978        editor.delete_to_next_word_end(
 2979            &DeleteToNextWordEnd {
 2980                ignore_newlines: true,
 2981                ignore_brackets: false,
 2982            },
 2983            window,
 2984            cx,
 2985        );
 2986    });
 2987    // Brackets on the right are not paired anymore, hence deletion does not stop at them
 2988    cx.assert_editor_state(r#"ˇ");"#);
 2989
 2990    cx.update_editor(|editor, window, cx| {
 2991        editor.delete_to_next_word_end(
 2992            &DeleteToNextWordEnd {
 2993                ignore_newlines: true,
 2994                ignore_brackets: false,
 2995            },
 2996            window,
 2997            cx,
 2998        );
 2999    });
 3000    cx.assert_editor_state(r#"ˇ"#);
 3001
 3002    cx.update_editor(|editor, window, cx| {
 3003        editor.delete_to_next_word_end(
 3004            &DeleteToNextWordEnd {
 3005                ignore_newlines: true,
 3006                ignore_brackets: false,
 3007            },
 3008            window,
 3009            cx,
 3010        );
 3011    });
 3012    cx.assert_editor_state(r#"ˇ"#);
 3013
 3014    cx.set_state(r#"macro!("// ˇCOMMENT");"#);
 3015    cx.update_editor(|editor, window, cx| {
 3016        editor.delete_to_previous_word_start(
 3017            &DeleteToPreviousWordStart {
 3018                ignore_newlines: true,
 3019                ignore_brackets: true,
 3020            },
 3021            window,
 3022            cx,
 3023        );
 3024    });
 3025    cx.assert_editor_state(r#"macroˇCOMMENT");"#);
 3026}
 3027
 3028#[gpui::test]
 3029fn test_delete_to_previous_word_start_or_newline(cx: &mut TestAppContext) {
 3030    init_test(cx, |_| {});
 3031
 3032    let editor = cx.add_window(|window, cx| {
 3033        let buffer = MultiBuffer::build_simple("one\n2\nthree\n4", cx);
 3034        build_editor(buffer, window, cx)
 3035    });
 3036    let del_to_prev_word_start = DeleteToPreviousWordStart {
 3037        ignore_newlines: false,
 3038        ignore_brackets: false,
 3039    };
 3040    let del_to_prev_word_start_ignore_newlines = DeleteToPreviousWordStart {
 3041        ignore_newlines: true,
 3042        ignore_brackets: false,
 3043    };
 3044
 3045    _ = editor.update(cx, |editor, window, cx| {
 3046        editor.change_selections(SelectionEffects::no_scroll(), window, cx, |s| {
 3047            s.select_display_ranges([
 3048                DisplayPoint::new(DisplayRow(3), 1)..DisplayPoint::new(DisplayRow(3), 1)
 3049            ])
 3050        });
 3051        editor.delete_to_previous_word_start(&del_to_prev_word_start, window, cx);
 3052        assert_eq!(editor.buffer.read(cx).read(cx).text(), "one\n2\nthree\n");
 3053        editor.delete_to_previous_word_start(&del_to_prev_word_start, window, cx);
 3054        assert_eq!(editor.buffer.read(cx).read(cx).text(), "one\n2\nthree");
 3055        editor.delete_to_previous_word_start(&del_to_prev_word_start, window, cx);
 3056        assert_eq!(editor.buffer.read(cx).read(cx).text(), "one\n2\n");
 3057        editor.delete_to_previous_word_start(&del_to_prev_word_start, window, cx);
 3058        assert_eq!(editor.buffer.read(cx).read(cx).text(), "one\n2");
 3059        editor.delete_to_previous_word_start(&del_to_prev_word_start_ignore_newlines, window, cx);
 3060        assert_eq!(editor.buffer.read(cx).read(cx).text(), "one\n");
 3061        editor.delete_to_previous_word_start(&del_to_prev_word_start_ignore_newlines, window, cx);
 3062        assert_eq!(editor.buffer.read(cx).read(cx).text(), "");
 3063    });
 3064}
 3065
 3066#[gpui::test]
 3067fn test_delete_to_next_word_end_or_newline(cx: &mut TestAppContext) {
 3068    init_test(cx, |_| {});
 3069
 3070    let editor = cx.add_window(|window, cx| {
 3071        let buffer = MultiBuffer::build_simple("\none\n   two\nthree\n   four", cx);
 3072        build_editor(buffer, window, cx)
 3073    });
 3074    let del_to_next_word_end = DeleteToNextWordEnd {
 3075        ignore_newlines: false,
 3076        ignore_brackets: false,
 3077    };
 3078    let del_to_next_word_end_ignore_newlines = DeleteToNextWordEnd {
 3079        ignore_newlines: true,
 3080        ignore_brackets: false,
 3081    };
 3082
 3083    _ = editor.update(cx, |editor, window, cx| {
 3084        editor.change_selections(SelectionEffects::no_scroll(), window, cx, |s| {
 3085            s.select_display_ranges([
 3086                DisplayPoint::new(DisplayRow(0), 0)..DisplayPoint::new(DisplayRow(0), 0)
 3087            ])
 3088        });
 3089        editor.delete_to_next_word_end(&del_to_next_word_end, window, cx);
 3090        assert_eq!(
 3091            editor.buffer.read(cx).read(cx).text(),
 3092            "one\n   two\nthree\n   four"
 3093        );
 3094        editor.delete_to_next_word_end(&del_to_next_word_end, window, cx);
 3095        assert_eq!(
 3096            editor.buffer.read(cx).read(cx).text(),
 3097            "\n   two\nthree\n   four"
 3098        );
 3099        editor.delete_to_next_word_end(&del_to_next_word_end, window, cx);
 3100        assert_eq!(
 3101            editor.buffer.read(cx).read(cx).text(),
 3102            "two\nthree\n   four"
 3103        );
 3104        editor.delete_to_next_word_end(&del_to_next_word_end, window, cx);
 3105        assert_eq!(editor.buffer.read(cx).read(cx).text(), "\nthree\n   four");
 3106        editor.delete_to_next_word_end(&del_to_next_word_end_ignore_newlines, window, cx);
 3107        assert_eq!(editor.buffer.read(cx).read(cx).text(), "\n   four");
 3108        editor.delete_to_next_word_end(&del_to_next_word_end_ignore_newlines, window, cx);
 3109        assert_eq!(editor.buffer.read(cx).read(cx).text(), "four");
 3110        editor.delete_to_next_word_end(&del_to_next_word_end_ignore_newlines, window, cx);
 3111        assert_eq!(editor.buffer.read(cx).read(cx).text(), "");
 3112    });
 3113}
 3114
 3115#[gpui::test]
 3116fn test_newline(cx: &mut TestAppContext) {
 3117    init_test(cx, |_| {});
 3118
 3119    let editor = cx.add_window(|window, cx| {
 3120        let buffer = MultiBuffer::build_simple("aaaa\n    bbbb\n", cx);
 3121        build_editor(buffer, window, cx)
 3122    });
 3123
 3124    _ = editor.update(cx, |editor, window, cx| {
 3125        editor.change_selections(SelectionEffects::no_scroll(), window, cx, |s| {
 3126            s.select_display_ranges([
 3127                DisplayPoint::new(DisplayRow(0), 2)..DisplayPoint::new(DisplayRow(0), 2),
 3128                DisplayPoint::new(DisplayRow(1), 2)..DisplayPoint::new(DisplayRow(1), 2),
 3129                DisplayPoint::new(DisplayRow(1), 6)..DisplayPoint::new(DisplayRow(1), 6),
 3130            ])
 3131        });
 3132
 3133        editor.newline(&Newline, window, cx);
 3134        assert_eq!(editor.text(cx), "aa\naa\n  \n    bb\n    bb\n");
 3135    });
 3136}
 3137
 3138#[gpui::test]
 3139fn test_newline_with_old_selections(cx: &mut TestAppContext) {
 3140    init_test(cx, |_| {});
 3141
 3142    let editor = cx.add_window(|window, cx| {
 3143        let buffer = MultiBuffer::build_simple(
 3144            "
 3145                a
 3146                b(
 3147                    X
 3148                )
 3149                c(
 3150                    X
 3151                )
 3152            "
 3153            .unindent()
 3154            .as_str(),
 3155            cx,
 3156        );
 3157        let mut editor = build_editor(buffer, window, cx);
 3158        editor.change_selections(SelectionEffects::no_scroll(), window, cx, |s| {
 3159            s.select_ranges([
 3160                Point::new(2, 4)..Point::new(2, 5),
 3161                Point::new(5, 4)..Point::new(5, 5),
 3162            ])
 3163        });
 3164        editor
 3165    });
 3166
 3167    _ = editor.update(cx, |editor, window, cx| {
 3168        // Edit the buffer directly, deleting ranges surrounding the editor's selections
 3169        editor.buffer.update(cx, |buffer, cx| {
 3170            buffer.edit(
 3171                [
 3172                    (Point::new(1, 2)..Point::new(3, 0), ""),
 3173                    (Point::new(4, 2)..Point::new(6, 0), ""),
 3174                ],
 3175                None,
 3176                cx,
 3177            );
 3178            assert_eq!(
 3179                buffer.read(cx).text(),
 3180                "
 3181                    a
 3182                    b()
 3183                    c()
 3184                "
 3185                .unindent()
 3186            );
 3187        });
 3188        assert_eq!(
 3189            editor.selections.ranges(&editor.display_snapshot(cx)),
 3190            &[
 3191                Point::new(1, 2)..Point::new(1, 2),
 3192                Point::new(2, 2)..Point::new(2, 2),
 3193            ],
 3194        );
 3195
 3196        editor.newline(&Newline, window, cx);
 3197        assert_eq!(
 3198            editor.text(cx),
 3199            "
 3200                a
 3201                b(
 3202                )
 3203                c(
 3204                )
 3205            "
 3206            .unindent()
 3207        );
 3208
 3209        // The selections are moved after the inserted newlines
 3210        assert_eq!(
 3211            editor.selections.ranges(&editor.display_snapshot(cx)),
 3212            &[
 3213                Point::new(2, 0)..Point::new(2, 0),
 3214                Point::new(4, 0)..Point::new(4, 0),
 3215            ],
 3216        );
 3217    });
 3218}
 3219
 3220#[gpui::test]
 3221async fn test_newline_above(cx: &mut TestAppContext) {
 3222    init_test(cx, |settings| {
 3223        settings.defaults.tab_size = NonZeroU32::new(4)
 3224    });
 3225
 3226    let language = Arc::new(
 3227        Language::new(
 3228            LanguageConfig::default(),
 3229            Some(tree_sitter_rust::LANGUAGE.into()),
 3230        )
 3231        .with_indents_query(r#"(_ "(" ")" @end) @indent"#)
 3232        .unwrap(),
 3233    );
 3234
 3235    let mut cx = EditorTestContext::new(cx).await;
 3236    cx.update_buffer(|buffer, cx| buffer.set_language(Some(language), cx));
 3237    cx.set_state(indoc! {"
 3238        const a: ˇA = (
 3239 3240                «const_functionˇ»(ˇ),
 3241                so«mˇ»et«hˇ»ing_ˇelse,ˇ
 3242 3243        ˇ);ˇ
 3244    "});
 3245
 3246    cx.update_editor(|e, window, cx| e.newline_above(&NewlineAbove, window, cx));
 3247    cx.assert_editor_state(indoc! {"
 3248        ˇ
 3249        const a: A = (
 3250            ˇ
 3251            (
 3252                ˇ
 3253                ˇ
 3254                const_function(),
 3255                ˇ
 3256                ˇ
 3257                ˇ
 3258                ˇ
 3259                something_else,
 3260                ˇ
 3261            )
 3262            ˇ
 3263            ˇ
 3264        );
 3265    "});
 3266}
 3267
 3268#[gpui::test]
 3269async fn test_newline_below(cx: &mut TestAppContext) {
 3270    init_test(cx, |settings| {
 3271        settings.defaults.tab_size = NonZeroU32::new(4)
 3272    });
 3273
 3274    let language = Arc::new(
 3275        Language::new(
 3276            LanguageConfig::default(),
 3277            Some(tree_sitter_rust::LANGUAGE.into()),
 3278        )
 3279        .with_indents_query(r#"(_ "(" ")" @end) @indent"#)
 3280        .unwrap(),
 3281    );
 3282
 3283    let mut cx = EditorTestContext::new(cx).await;
 3284    cx.update_buffer(|buffer, cx| buffer.set_language(Some(language), cx));
 3285    cx.set_state(indoc! {"
 3286        const a: ˇA = (
 3287 3288                «const_functionˇ»(ˇ),
 3289                so«mˇ»et«hˇ»ing_ˇelse,ˇ
 3290 3291        ˇ);ˇ
 3292    "});
 3293
 3294    cx.update_editor(|e, window, cx| e.newline_below(&NewlineBelow, window, cx));
 3295    cx.assert_editor_state(indoc! {"
 3296        const a: A = (
 3297            ˇ
 3298            (
 3299                ˇ
 3300                const_function(),
 3301                ˇ
 3302                ˇ
 3303                something_else,
 3304                ˇ
 3305                ˇ
 3306                ˇ
 3307                ˇ
 3308            )
 3309            ˇ
 3310        );
 3311        ˇ
 3312        ˇ
 3313    "});
 3314}
 3315
 3316#[gpui::test]
 3317async fn test_newline_comments(cx: &mut TestAppContext) {
 3318    init_test(cx, |settings| {
 3319        settings.defaults.tab_size = NonZeroU32::new(4)
 3320    });
 3321
 3322    let language = Arc::new(Language::new(
 3323        LanguageConfig {
 3324            line_comments: vec!["// ".into()],
 3325            ..LanguageConfig::default()
 3326        },
 3327        None,
 3328    ));
 3329    {
 3330        let mut cx = EditorTestContext::new(cx).await;
 3331        cx.update_buffer(|buffer, cx| buffer.set_language(Some(language), cx));
 3332        cx.set_state(indoc! {"
 3333        // Fooˇ
 3334    "});
 3335
 3336        cx.update_editor(|e, window, cx| e.newline(&Newline, window, cx));
 3337        cx.assert_editor_state(indoc! {"
 3338        // Foo
 3339        // ˇ
 3340    "});
 3341        // Ensure that we add comment prefix when existing line contains space
 3342        cx.update_editor(|e, window, cx| e.newline(&Newline, window, cx));
 3343        cx.assert_editor_state(
 3344            indoc! {"
 3345        // Foo
 3346        //s
 3347        // ˇ
 3348    "}
 3349            .replace("s", " ") // s is used as space placeholder to prevent format on save
 3350            .as_str(),
 3351        );
 3352        // Ensure that we add comment prefix when existing line does not contain space
 3353        cx.set_state(indoc! {"
 3354        // Foo
 3355        //ˇ
 3356    "});
 3357        cx.update_editor(|e, window, cx| e.newline(&Newline, window, cx));
 3358        cx.assert_editor_state(indoc! {"
 3359        // Foo
 3360        //
 3361        // ˇ
 3362    "});
 3363        // Ensure that if cursor is before the comment start, we do not actually insert a comment prefix.
 3364        cx.set_state(indoc! {"
 3365        ˇ// Foo
 3366    "});
 3367        cx.update_editor(|e, window, cx| e.newline(&Newline, window, cx));
 3368        cx.assert_editor_state(indoc! {"
 3369
 3370        ˇ// Foo
 3371    "});
 3372    }
 3373    // Ensure that comment continuations can be disabled.
 3374    update_test_language_settings(cx, |settings| {
 3375        settings.defaults.extend_comment_on_newline = Some(false);
 3376    });
 3377    let mut cx = EditorTestContext::new(cx).await;
 3378    cx.set_state(indoc! {"
 3379        // Fooˇ
 3380    "});
 3381    cx.update_editor(|e, window, cx| e.newline(&Newline, window, cx));
 3382    cx.assert_editor_state(indoc! {"
 3383        // Foo
 3384        ˇ
 3385    "});
 3386}
 3387
 3388#[gpui::test]
 3389async fn test_newline_comments_with_multiple_delimiters(cx: &mut TestAppContext) {
 3390    init_test(cx, |settings| {
 3391        settings.defaults.tab_size = NonZeroU32::new(4)
 3392    });
 3393
 3394    let language = Arc::new(Language::new(
 3395        LanguageConfig {
 3396            line_comments: vec!["// ".into(), "/// ".into()],
 3397            ..LanguageConfig::default()
 3398        },
 3399        None,
 3400    ));
 3401    {
 3402        let mut cx = EditorTestContext::new(cx).await;
 3403        cx.update_buffer(|buffer, cx| buffer.set_language(Some(language), cx));
 3404        cx.set_state(indoc! {"
 3405        //ˇ
 3406    "});
 3407        cx.update_editor(|e, window, cx| e.newline(&Newline, window, cx));
 3408        cx.assert_editor_state(indoc! {"
 3409        //
 3410        // ˇ
 3411    "});
 3412
 3413        cx.set_state(indoc! {"
 3414        ///ˇ
 3415    "});
 3416        cx.update_editor(|e, window, cx| e.newline(&Newline, window, cx));
 3417        cx.assert_editor_state(indoc! {"
 3418        ///
 3419        /// ˇ
 3420    "});
 3421    }
 3422}
 3423
 3424#[gpui::test]
 3425async fn test_newline_documentation_comments(cx: &mut TestAppContext) {
 3426    init_test(cx, |settings| {
 3427        settings.defaults.tab_size = NonZeroU32::new(4)
 3428    });
 3429
 3430    let language = Arc::new(
 3431        Language::new(
 3432            LanguageConfig {
 3433                documentation_comment: Some(language::BlockCommentConfig {
 3434                    start: "/**".into(),
 3435                    end: "*/".into(),
 3436                    prefix: "* ".into(),
 3437                    tab_size: 1,
 3438                }),
 3439
 3440                ..LanguageConfig::default()
 3441            },
 3442            Some(tree_sitter_rust::LANGUAGE.into()),
 3443        )
 3444        .with_override_query("[(line_comment)(block_comment)] @comment.inclusive")
 3445        .unwrap(),
 3446    );
 3447
 3448    {
 3449        let mut cx = EditorTestContext::new(cx).await;
 3450        cx.update_buffer(|buffer, cx| buffer.set_language(Some(language), cx));
 3451        cx.set_state(indoc! {"
 3452        /**ˇ
 3453    "});
 3454
 3455        cx.update_editor(|e, window, cx| e.newline(&Newline, window, cx));
 3456        cx.assert_editor_state(indoc! {"
 3457        /**
 3458         * ˇ
 3459    "});
 3460        // Ensure that if cursor is before the comment start,
 3461        // we do not actually insert a comment prefix.
 3462        cx.set_state(indoc! {"
 3463        ˇ/**
 3464    "});
 3465        cx.update_editor(|e, window, cx| e.newline(&Newline, window, cx));
 3466        cx.assert_editor_state(indoc! {"
 3467
 3468        ˇ/**
 3469    "});
 3470        // Ensure that if cursor is between it doesn't add comment prefix.
 3471        cx.set_state(indoc! {"
 3472        /*ˇ*
 3473    "});
 3474        cx.update_editor(|e, window, cx| e.newline(&Newline, window, cx));
 3475        cx.assert_editor_state(indoc! {"
 3476        /*
 3477        ˇ*
 3478    "});
 3479        // Ensure that if suffix exists on same line after cursor it adds new line.
 3480        cx.set_state(indoc! {"
 3481        /**ˇ*/
 3482    "});
 3483        cx.update_editor(|e, window, cx| e.newline(&Newline, window, cx));
 3484        cx.assert_editor_state(indoc! {"
 3485        /**
 3486         * ˇ
 3487         */
 3488    "});
 3489        // Ensure that if suffix exists on same line after cursor with space it adds new line.
 3490        cx.set_state(indoc! {"
 3491        /**ˇ */
 3492    "});
 3493        cx.update_editor(|e, window, cx| e.newline(&Newline, window, cx));
 3494        cx.assert_editor_state(indoc! {"
 3495        /**
 3496         * ˇ
 3497         */
 3498    "});
 3499        // Ensure that if suffix exists on same line after cursor with space it adds new line.
 3500        cx.set_state(indoc! {"
 3501        /** ˇ*/
 3502    "});
 3503        cx.update_editor(|e, window, cx| e.newline(&Newline, window, cx));
 3504        cx.assert_editor_state(
 3505            indoc! {"
 3506        /**s
 3507         * ˇ
 3508         */
 3509    "}
 3510            .replace("s", " ") // s is used as space placeholder to prevent format on save
 3511            .as_str(),
 3512        );
 3513        // Ensure that delimiter space is preserved when newline on already
 3514        // spaced delimiter.
 3515        cx.update_editor(|e, window, cx| e.newline(&Newline, window, cx));
 3516        cx.assert_editor_state(
 3517            indoc! {"
 3518        /**s
 3519         *s
 3520         * ˇ
 3521         */
 3522    "}
 3523            .replace("s", " ") // s is used as space placeholder to prevent format on save
 3524            .as_str(),
 3525        );
 3526        // Ensure that delimiter space is preserved when space is not
 3527        // on existing delimiter.
 3528        cx.set_state(indoc! {"
 3529        /**
 3530 3531         */
 3532    "});
 3533        cx.update_editor(|e, window, cx| e.newline(&Newline, window, cx));
 3534        cx.assert_editor_state(indoc! {"
 3535        /**
 3536         *
 3537         * ˇ
 3538         */
 3539    "});
 3540        // Ensure that if suffix exists on same line after cursor it
 3541        // doesn't add extra new line if prefix is not on same line.
 3542        cx.set_state(indoc! {"
 3543        /**
 3544        ˇ*/
 3545    "});
 3546        cx.update_editor(|e, window, cx| e.newline(&Newline, window, cx));
 3547        cx.assert_editor_state(indoc! {"
 3548        /**
 3549
 3550        ˇ*/
 3551    "});
 3552        // Ensure that it detects suffix after existing prefix.
 3553        cx.set_state(indoc! {"
 3554        /**ˇ/
 3555    "});
 3556        cx.update_editor(|e, window, cx| e.newline(&Newline, window, cx));
 3557        cx.assert_editor_state(indoc! {"
 3558        /**
 3559        ˇ/
 3560    "});
 3561        // Ensure that if suffix exists on same line before
 3562        // cursor it does not add comment prefix.
 3563        cx.set_state(indoc! {"
 3564        /** */ˇ
 3565    "});
 3566        cx.update_editor(|e, window, cx| e.newline(&Newline, window, cx));
 3567        cx.assert_editor_state(indoc! {"
 3568        /** */
 3569        ˇ
 3570    "});
 3571        // Ensure that if suffix exists on same line before
 3572        // cursor it does not add comment prefix.
 3573        cx.set_state(indoc! {"
 3574        /**
 3575         *
 3576         */ˇ
 3577    "});
 3578        cx.update_editor(|e, window, cx| e.newline(&Newline, window, cx));
 3579        cx.assert_editor_state(indoc! {"
 3580        /**
 3581         *
 3582         */
 3583         ˇ
 3584    "});
 3585
 3586        // Ensure that inline comment followed by code
 3587        // doesn't add comment prefix on newline
 3588        cx.set_state(indoc! {"
 3589        /** */ textˇ
 3590    "});
 3591        cx.update_editor(|e, window, cx| e.newline(&Newline, window, cx));
 3592        cx.assert_editor_state(indoc! {"
 3593        /** */ text
 3594        ˇ
 3595    "});
 3596
 3597        // Ensure that text after comment end tag
 3598        // doesn't add comment prefix on newline
 3599        cx.set_state(indoc! {"
 3600        /**
 3601         *
 3602         */ˇtext
 3603    "});
 3604        cx.update_editor(|e, window, cx| e.newline(&Newline, window, cx));
 3605        cx.assert_editor_state(indoc! {"
 3606        /**
 3607         *
 3608         */
 3609         ˇtext
 3610    "});
 3611
 3612        // Ensure if not comment block it doesn't
 3613        // add comment prefix on newline
 3614        cx.set_state(indoc! {"
 3615        * textˇ
 3616    "});
 3617        cx.update_editor(|e, window, cx| e.newline(&Newline, window, cx));
 3618        cx.assert_editor_state(indoc! {"
 3619        * text
 3620        ˇ
 3621    "});
 3622    }
 3623    // Ensure that comment continuations can be disabled.
 3624    update_test_language_settings(cx, |settings| {
 3625        settings.defaults.extend_comment_on_newline = Some(false);
 3626    });
 3627    let mut cx = EditorTestContext::new(cx).await;
 3628    cx.set_state(indoc! {"
 3629        /**ˇ
 3630    "});
 3631    cx.update_editor(|e, window, cx| e.newline(&Newline, window, cx));
 3632    cx.assert_editor_state(indoc! {"
 3633        /**
 3634        ˇ
 3635    "});
 3636}
 3637
 3638#[gpui::test]
 3639async fn test_newline_comments_with_block_comment(cx: &mut TestAppContext) {
 3640    init_test(cx, |settings| {
 3641        settings.defaults.tab_size = NonZeroU32::new(4)
 3642    });
 3643
 3644    let lua_language = Arc::new(Language::new(
 3645        LanguageConfig {
 3646            line_comments: vec!["--".into()],
 3647            block_comment: Some(language::BlockCommentConfig {
 3648                start: "--[[".into(),
 3649                prefix: "".into(),
 3650                end: "]]".into(),
 3651                tab_size: 0,
 3652            }),
 3653            ..LanguageConfig::default()
 3654        },
 3655        None,
 3656    ));
 3657
 3658    let mut cx = EditorTestContext::new(cx).await;
 3659    cx.update_buffer(|buffer, cx| buffer.set_language(Some(lua_language), cx));
 3660
 3661    // Line with line comment should extend
 3662    cx.set_state(indoc! {"
 3663        --ˇ
 3664    "});
 3665    cx.update_editor(|e, window, cx| e.newline(&Newline, window, cx));
 3666    cx.assert_editor_state(indoc! {"
 3667        --
 3668        --ˇ
 3669    "});
 3670
 3671    // Line with block comment that matches line comment should not extend
 3672    cx.set_state(indoc! {"
 3673        --[[ˇ
 3674    "});
 3675    cx.update_editor(|e, window, cx| e.newline(&Newline, window, cx));
 3676    cx.assert_editor_state(indoc! {"
 3677        --[[
 3678        ˇ
 3679    "});
 3680}
 3681
 3682#[gpui::test]
 3683fn test_insert_with_old_selections(cx: &mut TestAppContext) {
 3684    init_test(cx, |_| {});
 3685
 3686    let editor = cx.add_window(|window, cx| {
 3687        let buffer = MultiBuffer::build_simple("a( X ), b( Y ), c( Z )", cx);
 3688        let mut editor = build_editor(buffer, window, cx);
 3689        editor.change_selections(SelectionEffects::no_scroll(), window, cx, |s| {
 3690            s.select_ranges([3..4, 11..12, 19..20])
 3691        });
 3692        editor
 3693    });
 3694
 3695    _ = editor.update(cx, |editor, window, cx| {
 3696        // Edit the buffer directly, deleting ranges surrounding the editor's selections
 3697        editor.buffer.update(cx, |buffer, cx| {
 3698            buffer.edit([(2..5, ""), (10..13, ""), (18..21, "")], None, cx);
 3699            assert_eq!(buffer.read(cx).text(), "a(), b(), c()".unindent());
 3700        });
 3701        assert_eq!(
 3702            editor.selections.ranges(&editor.display_snapshot(cx)),
 3703            &[2..2, 7..7, 12..12],
 3704        );
 3705
 3706        editor.insert("Z", window, cx);
 3707        assert_eq!(editor.text(cx), "a(Z), b(Z), c(Z)");
 3708
 3709        // The selections are moved after the inserted characters
 3710        assert_eq!(
 3711            editor.selections.ranges(&editor.display_snapshot(cx)),
 3712            &[3..3, 9..9, 15..15],
 3713        );
 3714    });
 3715}
 3716
 3717#[gpui::test]
 3718async fn test_tab(cx: &mut TestAppContext) {
 3719    init_test(cx, |settings| {
 3720        settings.defaults.tab_size = NonZeroU32::new(3)
 3721    });
 3722
 3723    let mut cx = EditorTestContext::new(cx).await;
 3724    cx.set_state(indoc! {"
 3725        ˇabˇc
 3726        ˇ🏀ˇ🏀ˇefg
 3727 3728    "});
 3729    cx.update_editor(|e, window, cx| e.tab(&Tab, window, cx));
 3730    cx.assert_editor_state(indoc! {"
 3731           ˇab ˇc
 3732           ˇ🏀  ˇ🏀  ˇefg
 3733        d  ˇ
 3734    "});
 3735
 3736    cx.set_state(indoc! {"
 3737        a
 3738        «🏀ˇ»🏀«🏀ˇ»🏀«🏀ˇ»
 3739    "});
 3740    cx.update_editor(|e, window, cx| e.tab(&Tab, window, cx));
 3741    cx.assert_editor_state(indoc! {"
 3742        a
 3743           «🏀ˇ»🏀«🏀ˇ»🏀«🏀ˇ»
 3744    "});
 3745}
 3746
 3747#[gpui::test]
 3748async fn test_tab_in_leading_whitespace_auto_indents_lines(cx: &mut TestAppContext) {
 3749    init_test(cx, |_| {});
 3750
 3751    let mut cx = EditorTestContext::new(cx).await;
 3752    let language = Arc::new(
 3753        Language::new(
 3754            LanguageConfig::default(),
 3755            Some(tree_sitter_rust::LANGUAGE.into()),
 3756        )
 3757        .with_indents_query(r#"(_ "(" ")" @end) @indent"#)
 3758        .unwrap(),
 3759    );
 3760    cx.update_buffer(|buffer, cx| buffer.set_language(Some(language), cx));
 3761
 3762    // test when all cursors are not at suggested indent
 3763    // then simply move to their suggested indent location
 3764    cx.set_state(indoc! {"
 3765        const a: B = (
 3766            c(
 3767        ˇ
 3768        ˇ    )
 3769        );
 3770    "});
 3771    cx.update_editor(|e, window, cx| e.tab(&Tab, window, cx));
 3772    cx.assert_editor_state(indoc! {"
 3773        const a: B = (
 3774            c(
 3775                ˇ
 3776            ˇ)
 3777        );
 3778    "});
 3779
 3780    // test cursor already at suggested indent not moving when
 3781    // other cursors are yet to reach their suggested indents
 3782    cx.set_state(indoc! {"
 3783        ˇ
 3784        const a: B = (
 3785            c(
 3786                d(
 3787        ˇ
 3788                )
 3789        ˇ
 3790        ˇ    )
 3791        );
 3792    "});
 3793    cx.update_editor(|e, window, cx| e.tab(&Tab, window, cx));
 3794    cx.assert_editor_state(indoc! {"
 3795        ˇ
 3796        const a: B = (
 3797            c(
 3798                d(
 3799                    ˇ
 3800                )
 3801                ˇ
 3802            ˇ)
 3803        );
 3804    "});
 3805    // test when all cursors are at suggested indent then tab is inserted
 3806    cx.update_editor(|e, window, cx| e.tab(&Tab, window, cx));
 3807    cx.assert_editor_state(indoc! {"
 3808            ˇ
 3809        const a: B = (
 3810            c(
 3811                d(
 3812                        ˇ
 3813                )
 3814                    ˇ
 3815                ˇ)
 3816        );
 3817    "});
 3818
 3819    // test when current indent is less than suggested indent,
 3820    // we adjust line to match suggested indent and move cursor to it
 3821    //
 3822    // when no other cursor is at word boundary, all of them should move
 3823    cx.set_state(indoc! {"
 3824        const a: B = (
 3825            c(
 3826                d(
 3827        ˇ
 3828        ˇ   )
 3829        ˇ   )
 3830        );
 3831    "});
 3832    cx.update_editor(|e, window, cx| e.tab(&Tab, window, cx));
 3833    cx.assert_editor_state(indoc! {"
 3834        const a: B = (
 3835            c(
 3836                d(
 3837                    ˇ
 3838                ˇ)
 3839            ˇ)
 3840        );
 3841    "});
 3842
 3843    // test when current indent is less than suggested indent,
 3844    // we adjust line to match suggested indent and move cursor to it
 3845    //
 3846    // when some other cursor is at word boundary, it should not move
 3847    cx.set_state(indoc! {"
 3848        const a: B = (
 3849            c(
 3850                d(
 3851        ˇ
 3852        ˇ   )
 3853           ˇ)
 3854        );
 3855    "});
 3856    cx.update_editor(|e, window, cx| e.tab(&Tab, window, cx));
 3857    cx.assert_editor_state(indoc! {"
 3858        const a: B = (
 3859            c(
 3860                d(
 3861                    ˇ
 3862                ˇ)
 3863            ˇ)
 3864        );
 3865    "});
 3866
 3867    // test when current indent is more than suggested indent,
 3868    // we just move cursor to current indent instead of suggested indent
 3869    //
 3870    // when no other cursor is at word boundary, all of them should move
 3871    cx.set_state(indoc! {"
 3872        const a: B = (
 3873            c(
 3874                d(
 3875        ˇ
 3876        ˇ                )
 3877        ˇ   )
 3878        );
 3879    "});
 3880    cx.update_editor(|e, window, cx| e.tab(&Tab, window, cx));
 3881    cx.assert_editor_state(indoc! {"
 3882        const a: B = (
 3883            c(
 3884                d(
 3885                    ˇ
 3886                        ˇ)
 3887            ˇ)
 3888        );
 3889    "});
 3890    cx.update_editor(|e, window, cx| e.tab(&Tab, window, cx));
 3891    cx.assert_editor_state(indoc! {"
 3892        const a: B = (
 3893            c(
 3894                d(
 3895                        ˇ
 3896                            ˇ)
 3897                ˇ)
 3898        );
 3899    "});
 3900
 3901    // test when current indent is more than suggested indent,
 3902    // we just move cursor to current indent instead of suggested indent
 3903    //
 3904    // when some other cursor is at word boundary, it doesn't move
 3905    cx.set_state(indoc! {"
 3906        const a: B = (
 3907            c(
 3908                d(
 3909        ˇ
 3910        ˇ                )
 3911            ˇ)
 3912        );
 3913    "});
 3914    cx.update_editor(|e, window, cx| e.tab(&Tab, window, cx));
 3915    cx.assert_editor_state(indoc! {"
 3916        const a: B = (
 3917            c(
 3918                d(
 3919                    ˇ
 3920                        ˇ)
 3921            ˇ)
 3922        );
 3923    "});
 3924
 3925    // handle auto-indent when there are multiple cursors on the same line
 3926    cx.set_state(indoc! {"
 3927        const a: B = (
 3928            c(
 3929        ˇ    ˇ
 3930        ˇ    )
 3931        );
 3932    "});
 3933    cx.update_editor(|e, window, cx| e.tab(&Tab, window, cx));
 3934    cx.assert_editor_state(indoc! {"
 3935        const a: B = (
 3936            c(
 3937                ˇ
 3938            ˇ)
 3939        );
 3940    "});
 3941}
 3942
 3943#[gpui::test]
 3944async fn test_tab_with_mixed_whitespace_txt(cx: &mut TestAppContext) {
 3945    init_test(cx, |settings| {
 3946        settings.defaults.tab_size = NonZeroU32::new(3)
 3947    });
 3948
 3949    let mut cx = EditorTestContext::new(cx).await;
 3950    cx.set_state(indoc! {"
 3951         ˇ
 3952        \t ˇ
 3953        \t  ˇ
 3954        \t   ˇ
 3955         \t  \t\t \t      \t\t   \t\t    \t \t ˇ
 3956    "});
 3957
 3958    cx.update_editor(|e, window, cx| e.tab(&Tab, window, cx));
 3959    cx.assert_editor_state(indoc! {"
 3960           ˇ
 3961        \t   ˇ
 3962        \t   ˇ
 3963        \t      ˇ
 3964         \t  \t\t \t      \t\t   \t\t    \t \t   ˇ
 3965    "});
 3966}
 3967
 3968#[gpui::test]
 3969async fn test_tab_with_mixed_whitespace_rust(cx: &mut TestAppContext) {
 3970    init_test(cx, |settings| {
 3971        settings.defaults.tab_size = NonZeroU32::new(4)
 3972    });
 3973
 3974    let language = Arc::new(
 3975        Language::new(
 3976            LanguageConfig::default(),
 3977            Some(tree_sitter_rust::LANGUAGE.into()),
 3978        )
 3979        .with_indents_query(r#"(_ "{" "}" @end) @indent"#)
 3980        .unwrap(),
 3981    );
 3982
 3983    let mut cx = EditorTestContext::new(cx).await;
 3984    cx.update_buffer(|buffer, cx| buffer.set_language(Some(language), cx));
 3985    cx.set_state(indoc! {"
 3986        fn a() {
 3987            if b {
 3988        \t ˇc
 3989            }
 3990        }
 3991    "});
 3992
 3993    cx.update_editor(|e, window, cx| e.tab(&Tab, window, cx));
 3994    cx.assert_editor_state(indoc! {"
 3995        fn a() {
 3996            if b {
 3997                ˇc
 3998            }
 3999        }
 4000    "});
 4001}
 4002
 4003#[gpui::test]
 4004async fn test_indent_outdent(cx: &mut TestAppContext) {
 4005    init_test(cx, |settings| {
 4006        settings.defaults.tab_size = NonZeroU32::new(4);
 4007    });
 4008
 4009    let mut cx = EditorTestContext::new(cx).await;
 4010
 4011    cx.set_state(indoc! {"
 4012          «oneˇ» «twoˇ»
 4013        three
 4014         four
 4015    "});
 4016    cx.update_editor(|e, window, cx| e.tab(&Tab, window, cx));
 4017    cx.assert_editor_state(indoc! {"
 4018            «oneˇ» «twoˇ»
 4019        three
 4020         four
 4021    "});
 4022
 4023    cx.update_editor(|e, window, cx| e.backtab(&Backtab, window, cx));
 4024    cx.assert_editor_state(indoc! {"
 4025        «oneˇ» «twoˇ»
 4026        three
 4027         four
 4028    "});
 4029
 4030    // select across line ending
 4031    cx.set_state(indoc! {"
 4032        one two
 4033        t«hree
 4034        ˇ» four
 4035    "});
 4036    cx.update_editor(|e, window, cx| e.tab(&Tab, window, cx));
 4037    cx.assert_editor_state(indoc! {"
 4038        one two
 4039            t«hree
 4040        ˇ» four
 4041    "});
 4042
 4043    cx.update_editor(|e, window, cx| e.backtab(&Backtab, window, cx));
 4044    cx.assert_editor_state(indoc! {"
 4045        one two
 4046        t«hree
 4047        ˇ» four
 4048    "});
 4049
 4050    // Ensure that indenting/outdenting works when the cursor is at column 0.
 4051    cx.set_state(indoc! {"
 4052        one two
 4053        ˇthree
 4054            four
 4055    "});
 4056    cx.update_editor(|e, window, cx| e.tab(&Tab, window, cx));
 4057    cx.assert_editor_state(indoc! {"
 4058        one two
 4059            ˇthree
 4060            four
 4061    "});
 4062
 4063    cx.set_state(indoc! {"
 4064        one two
 4065        ˇ    three
 4066            four
 4067    "});
 4068    cx.update_editor(|e, window, cx| e.backtab(&Backtab, window, cx));
 4069    cx.assert_editor_state(indoc! {"
 4070        one two
 4071        ˇthree
 4072            four
 4073    "});
 4074}
 4075
 4076#[gpui::test]
 4077async fn test_indent_yaml_comments_with_multiple_cursors(cx: &mut TestAppContext) {
 4078    // This is a regression test for issue #33761
 4079    init_test(cx, |_| {});
 4080
 4081    let mut cx = EditorTestContext::new(cx).await;
 4082    let yaml_language = languages::language("yaml", tree_sitter_yaml::LANGUAGE.into());
 4083    cx.update_buffer(|buffer, cx| buffer.set_language(Some(yaml_language), cx));
 4084
 4085    cx.set_state(
 4086        r#"ˇ#     ingress:
 4087ˇ#         api:
 4088ˇ#             enabled: false
 4089ˇ#             pathType: Prefix
 4090ˇ#           console:
 4091ˇ#               enabled: false
 4092ˇ#               pathType: Prefix
 4093"#,
 4094    );
 4095
 4096    // Press tab to indent all lines
 4097    cx.update_editor(|e, window, cx| e.tab(&Tab, window, cx));
 4098
 4099    cx.assert_editor_state(
 4100        r#"    ˇ#     ingress:
 4101    ˇ#         api:
 4102    ˇ#             enabled: false
 4103    ˇ#             pathType: Prefix
 4104    ˇ#           console:
 4105    ˇ#               enabled: false
 4106    ˇ#               pathType: Prefix
 4107"#,
 4108    );
 4109}
 4110
 4111#[gpui::test]
 4112async fn test_indent_yaml_non_comments_with_multiple_cursors(cx: &mut TestAppContext) {
 4113    // This is a test to make sure our fix for issue #33761 didn't break anything
 4114    init_test(cx, |_| {});
 4115
 4116    let mut cx = EditorTestContext::new(cx).await;
 4117    let yaml_language = languages::language("yaml", tree_sitter_yaml::LANGUAGE.into());
 4118    cx.update_buffer(|buffer, cx| buffer.set_language(Some(yaml_language), cx));
 4119
 4120    cx.set_state(
 4121        r#"ˇingress:
 4122ˇ  api:
 4123ˇ    enabled: false
 4124ˇ    pathType: Prefix
 4125"#,
 4126    );
 4127
 4128    // Press tab to indent all lines
 4129    cx.update_editor(|e, window, cx| e.tab(&Tab, window, cx));
 4130
 4131    cx.assert_editor_state(
 4132        r#"ˇingress:
 4133    ˇapi:
 4134        ˇenabled: false
 4135        ˇpathType: Prefix
 4136"#,
 4137    );
 4138}
 4139
 4140#[gpui::test]
 4141async fn test_indent_outdent_with_hard_tabs(cx: &mut TestAppContext) {
 4142    init_test(cx, |settings| {
 4143        settings.defaults.hard_tabs = Some(true);
 4144    });
 4145
 4146    let mut cx = EditorTestContext::new(cx).await;
 4147
 4148    // select two ranges on one line
 4149    cx.set_state(indoc! {"
 4150        «oneˇ» «twoˇ»
 4151        three
 4152        four
 4153    "});
 4154    cx.update_editor(|e, window, cx| e.tab(&Tab, window, cx));
 4155    cx.assert_editor_state(indoc! {"
 4156        \t«oneˇ» «twoˇ»
 4157        three
 4158        four
 4159    "});
 4160    cx.update_editor(|e, window, cx| e.tab(&Tab, window, cx));
 4161    cx.assert_editor_state(indoc! {"
 4162        \t\t«oneˇ» «twoˇ»
 4163        three
 4164        four
 4165    "});
 4166    cx.update_editor(|e, window, cx| e.backtab(&Backtab, window, cx));
 4167    cx.assert_editor_state(indoc! {"
 4168        \t«oneˇ» «twoˇ»
 4169        three
 4170        four
 4171    "});
 4172    cx.update_editor(|e, window, cx| e.backtab(&Backtab, window, cx));
 4173    cx.assert_editor_state(indoc! {"
 4174        «oneˇ» «twoˇ»
 4175        three
 4176        four
 4177    "});
 4178
 4179    // select across a line ending
 4180    cx.set_state(indoc! {"
 4181        one two
 4182        t«hree
 4183        ˇ»four
 4184    "});
 4185    cx.update_editor(|e, window, cx| e.tab(&Tab, window, cx));
 4186    cx.assert_editor_state(indoc! {"
 4187        one two
 4188        \tt«hree
 4189        ˇ»four
 4190    "});
 4191    cx.update_editor(|e, window, cx| e.tab(&Tab, window, cx));
 4192    cx.assert_editor_state(indoc! {"
 4193        one two
 4194        \t\tt«hree
 4195        ˇ»four
 4196    "});
 4197    cx.update_editor(|e, window, cx| e.backtab(&Backtab, window, cx));
 4198    cx.assert_editor_state(indoc! {"
 4199        one two
 4200        \tt«hree
 4201        ˇ»four
 4202    "});
 4203    cx.update_editor(|e, window, cx| e.backtab(&Backtab, window, cx));
 4204    cx.assert_editor_state(indoc! {"
 4205        one two
 4206        t«hree
 4207        ˇ»four
 4208    "});
 4209
 4210    // Ensure that indenting/outdenting works when the cursor is at column 0.
 4211    cx.set_state(indoc! {"
 4212        one two
 4213        ˇthree
 4214        four
 4215    "});
 4216    cx.update_editor(|e, window, cx| e.backtab(&Backtab, window, cx));
 4217    cx.assert_editor_state(indoc! {"
 4218        one two
 4219        ˇthree
 4220        four
 4221    "});
 4222    cx.update_editor(|e, window, cx| e.tab(&Tab, window, cx));
 4223    cx.assert_editor_state(indoc! {"
 4224        one two
 4225        \tˇthree
 4226        four
 4227    "});
 4228    cx.update_editor(|e, window, cx| e.backtab(&Backtab, window, cx));
 4229    cx.assert_editor_state(indoc! {"
 4230        one two
 4231        ˇthree
 4232        four
 4233    "});
 4234}
 4235
 4236#[gpui::test]
 4237fn test_indent_outdent_with_excerpts(cx: &mut TestAppContext) {
 4238    init_test(cx, |settings| {
 4239        settings.languages.0.extend([
 4240            (
 4241                "TOML".into(),
 4242                LanguageSettingsContent {
 4243                    tab_size: NonZeroU32::new(2),
 4244                    ..Default::default()
 4245                },
 4246            ),
 4247            (
 4248                "Rust".into(),
 4249                LanguageSettingsContent {
 4250                    tab_size: NonZeroU32::new(4),
 4251                    ..Default::default()
 4252                },
 4253            ),
 4254        ]);
 4255    });
 4256
 4257    let toml_language = Arc::new(Language::new(
 4258        LanguageConfig {
 4259            name: "TOML".into(),
 4260            ..Default::default()
 4261        },
 4262        None,
 4263    ));
 4264    let rust_language = Arc::new(Language::new(
 4265        LanguageConfig {
 4266            name: "Rust".into(),
 4267            ..Default::default()
 4268        },
 4269        None,
 4270    ));
 4271
 4272    let toml_buffer =
 4273        cx.new(|cx| Buffer::local("a = 1\nb = 2\n", cx).with_language(toml_language, cx));
 4274    let rust_buffer =
 4275        cx.new(|cx| Buffer::local("const c: usize = 3;\n", cx).with_language(rust_language, cx));
 4276    let multibuffer = cx.new(|cx| {
 4277        let mut multibuffer = MultiBuffer::new(ReadWrite);
 4278        multibuffer.push_excerpts(
 4279            toml_buffer.clone(),
 4280            [ExcerptRange::new(Point::new(0, 0)..Point::new(2, 0))],
 4281            cx,
 4282        );
 4283        multibuffer.push_excerpts(
 4284            rust_buffer.clone(),
 4285            [ExcerptRange::new(Point::new(0, 0)..Point::new(1, 0))],
 4286            cx,
 4287        );
 4288        multibuffer
 4289    });
 4290
 4291    cx.add_window(|window, cx| {
 4292        let mut editor = build_editor(multibuffer, window, cx);
 4293
 4294        assert_eq!(
 4295            editor.text(cx),
 4296            indoc! {"
 4297                a = 1
 4298                b = 2
 4299
 4300                const c: usize = 3;
 4301            "}
 4302        );
 4303
 4304        select_ranges(
 4305            &mut editor,
 4306            indoc! {"
 4307                «aˇ» = 1
 4308                b = 2
 4309
 4310                «const c:ˇ» usize = 3;
 4311            "},
 4312            window,
 4313            cx,
 4314        );
 4315
 4316        editor.tab(&Tab, window, cx);
 4317        assert_text_with_selections(
 4318            &mut editor,
 4319            indoc! {"
 4320                  «aˇ» = 1
 4321                b = 2
 4322
 4323                    «const c:ˇ» usize = 3;
 4324            "},
 4325            cx,
 4326        );
 4327        editor.backtab(&Backtab, window, cx);
 4328        assert_text_with_selections(
 4329            &mut editor,
 4330            indoc! {"
 4331                «aˇ» = 1
 4332                b = 2
 4333
 4334                «const c:ˇ» usize = 3;
 4335            "},
 4336            cx,
 4337        );
 4338
 4339        editor
 4340    });
 4341}
 4342
 4343#[gpui::test]
 4344async fn test_backspace(cx: &mut TestAppContext) {
 4345    init_test(cx, |_| {});
 4346
 4347    let mut cx = EditorTestContext::new(cx).await;
 4348
 4349    // Basic backspace
 4350    cx.set_state(indoc! {"
 4351        onˇe two three
 4352        fou«rˇ» five six
 4353        seven «ˇeight nine
 4354        »ten
 4355    "});
 4356    cx.update_editor(|e, window, cx| e.backspace(&Backspace, window, cx));
 4357    cx.assert_editor_state(indoc! {"
 4358        oˇe two three
 4359        fouˇ five six
 4360        seven ˇten
 4361    "});
 4362
 4363    // Test backspace inside and around indents
 4364    cx.set_state(indoc! {"
 4365        zero
 4366            ˇone
 4367                ˇtwo
 4368            ˇ ˇ ˇ  three
 4369        ˇ  ˇ  four
 4370    "});
 4371    cx.update_editor(|e, window, cx| e.backspace(&Backspace, window, cx));
 4372    cx.assert_editor_state(indoc! {"
 4373        zero
 4374        ˇone
 4375            ˇtwo
 4376        ˇ  threeˇ  four
 4377    "});
 4378}
 4379
 4380#[gpui::test]
 4381async fn test_delete(cx: &mut TestAppContext) {
 4382    init_test(cx, |_| {});
 4383
 4384    let mut cx = EditorTestContext::new(cx).await;
 4385    cx.set_state(indoc! {"
 4386        onˇe two three
 4387        fou«rˇ» five six
 4388        seven «ˇeight nine
 4389        »ten
 4390    "});
 4391    cx.update_editor(|e, window, cx| e.delete(&Delete, window, cx));
 4392    cx.assert_editor_state(indoc! {"
 4393        onˇ two three
 4394        fouˇ five six
 4395        seven ˇten
 4396    "});
 4397}
 4398
 4399#[gpui::test]
 4400fn test_delete_line(cx: &mut TestAppContext) {
 4401    init_test(cx, |_| {});
 4402
 4403    let editor = cx.add_window(|window, cx| {
 4404        let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
 4405        build_editor(buffer, window, cx)
 4406    });
 4407    _ = editor.update(cx, |editor, window, cx| {
 4408        editor.change_selections(SelectionEffects::no_scroll(), window, cx, |s| {
 4409            s.select_display_ranges([
 4410                DisplayPoint::new(DisplayRow(0), 1)..DisplayPoint::new(DisplayRow(0), 1),
 4411                DisplayPoint::new(DisplayRow(1), 0)..DisplayPoint::new(DisplayRow(1), 1),
 4412                DisplayPoint::new(DisplayRow(3), 0)..DisplayPoint::new(DisplayRow(3), 0),
 4413            ])
 4414        });
 4415        editor.delete_line(&DeleteLine, window, cx);
 4416        assert_eq!(editor.display_text(cx), "ghi");
 4417        assert_eq!(
 4418            editor.selections.display_ranges(cx),
 4419            vec![
 4420                DisplayPoint::new(DisplayRow(0), 0)..DisplayPoint::new(DisplayRow(0), 0),
 4421                DisplayPoint::new(DisplayRow(0), 1)..DisplayPoint::new(DisplayRow(0), 1),
 4422            ]
 4423        );
 4424    });
 4425
 4426    let editor = cx.add_window(|window, cx| {
 4427        let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
 4428        build_editor(buffer, window, cx)
 4429    });
 4430    _ = editor.update(cx, |editor, window, cx| {
 4431        editor.change_selections(SelectionEffects::no_scroll(), window, cx, |s| {
 4432            s.select_display_ranges([
 4433                DisplayPoint::new(DisplayRow(2), 0)..DisplayPoint::new(DisplayRow(0), 1)
 4434            ])
 4435        });
 4436        editor.delete_line(&DeleteLine, window, cx);
 4437        assert_eq!(editor.display_text(cx), "ghi\n");
 4438        assert_eq!(
 4439            editor.selections.display_ranges(cx),
 4440            vec![DisplayPoint::new(DisplayRow(0), 1)..DisplayPoint::new(DisplayRow(0), 1)]
 4441        );
 4442    });
 4443
 4444    let editor = cx.add_window(|window, cx| {
 4445        let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n\njkl\nmno", cx);
 4446        build_editor(buffer, window, cx)
 4447    });
 4448    _ = editor.update(cx, |editor, window, cx| {
 4449        editor.change_selections(SelectionEffects::no_scroll(), window, cx, |s| {
 4450            s.select_display_ranges([
 4451                DisplayPoint::new(DisplayRow(0), 1)..DisplayPoint::new(DisplayRow(2), 1)
 4452            ])
 4453        });
 4454        editor.delete_line(&DeleteLine, window, cx);
 4455        assert_eq!(editor.display_text(cx), "\njkl\nmno");
 4456        assert_eq!(
 4457            editor.selections.display_ranges(cx),
 4458            vec![DisplayPoint::new(DisplayRow(0), 0)..DisplayPoint::new(DisplayRow(0), 0)]
 4459        );
 4460    });
 4461}
 4462
 4463#[gpui::test]
 4464fn test_join_lines_with_single_selection(cx: &mut TestAppContext) {
 4465    init_test(cx, |_| {});
 4466
 4467    cx.add_window(|window, cx| {
 4468        let buffer = MultiBuffer::build_simple("aaa\nbbb\nccc\nddd\n\n", cx);
 4469        let mut editor = build_editor(buffer.clone(), window, cx);
 4470        let buffer = buffer.read(cx).as_singleton().unwrap();
 4471
 4472        assert_eq!(
 4473            editor
 4474                .selections
 4475                .ranges::<Point>(&editor.display_snapshot(cx)),
 4476            &[Point::new(0, 0)..Point::new(0, 0)]
 4477        );
 4478
 4479        // When on single line, replace newline at end by space
 4480        editor.join_lines(&JoinLines, window, cx);
 4481        assert_eq!(buffer.read(cx).text(), "aaa bbb\nccc\nddd\n\n");
 4482        assert_eq!(
 4483            editor
 4484                .selections
 4485                .ranges::<Point>(&editor.display_snapshot(cx)),
 4486            &[Point::new(0, 3)..Point::new(0, 3)]
 4487        );
 4488
 4489        // When multiple lines are selected, remove newlines that are spanned by the selection
 4490        editor.change_selections(SelectionEffects::no_scroll(), window, cx, |s| {
 4491            s.select_ranges([Point::new(0, 5)..Point::new(2, 2)])
 4492        });
 4493        editor.join_lines(&JoinLines, window, cx);
 4494        assert_eq!(buffer.read(cx).text(), "aaa bbb ccc ddd\n\n");
 4495        assert_eq!(
 4496            editor
 4497                .selections
 4498                .ranges::<Point>(&editor.display_snapshot(cx)),
 4499            &[Point::new(0, 11)..Point::new(0, 11)]
 4500        );
 4501
 4502        // Undo should be transactional
 4503        editor.undo(&Undo, window, cx);
 4504        assert_eq!(buffer.read(cx).text(), "aaa bbb\nccc\nddd\n\n");
 4505        assert_eq!(
 4506            editor
 4507                .selections
 4508                .ranges::<Point>(&editor.display_snapshot(cx)),
 4509            &[Point::new(0, 5)..Point::new(2, 2)]
 4510        );
 4511
 4512        // When joining an empty line don't insert a space
 4513        editor.change_selections(SelectionEffects::no_scroll(), window, cx, |s| {
 4514            s.select_ranges([Point::new(2, 1)..Point::new(2, 2)])
 4515        });
 4516        editor.join_lines(&JoinLines, window, cx);
 4517        assert_eq!(buffer.read(cx).text(), "aaa bbb\nccc\nddd\n");
 4518        assert_eq!(
 4519            editor
 4520                .selections
 4521                .ranges::<Point>(&editor.display_snapshot(cx)),
 4522            [Point::new(2, 3)..Point::new(2, 3)]
 4523        );
 4524
 4525        // We can remove trailing newlines
 4526        editor.join_lines(&JoinLines, window, cx);
 4527        assert_eq!(buffer.read(cx).text(), "aaa bbb\nccc\nddd");
 4528        assert_eq!(
 4529            editor
 4530                .selections
 4531                .ranges::<Point>(&editor.display_snapshot(cx)),
 4532            [Point::new(2, 3)..Point::new(2, 3)]
 4533        );
 4534
 4535        // We don't blow up on the last line
 4536        editor.join_lines(&JoinLines, window, cx);
 4537        assert_eq!(buffer.read(cx).text(), "aaa bbb\nccc\nddd");
 4538        assert_eq!(
 4539            editor
 4540                .selections
 4541                .ranges::<Point>(&editor.display_snapshot(cx)),
 4542            [Point::new(2, 3)..Point::new(2, 3)]
 4543        );
 4544
 4545        // reset to test indentation
 4546        editor.buffer.update(cx, |buffer, cx| {
 4547            buffer.edit(
 4548                [
 4549                    (Point::new(1, 0)..Point::new(1, 2), "  "),
 4550                    (Point::new(2, 0)..Point::new(2, 3), "  \n\td"),
 4551                ],
 4552                None,
 4553                cx,
 4554            )
 4555        });
 4556
 4557        // We remove any leading spaces
 4558        assert_eq!(buffer.read(cx).text(), "aaa bbb\n  c\n  \n\td");
 4559        editor.change_selections(SelectionEffects::no_scroll(), window, cx, |s| {
 4560            s.select_ranges([Point::new(0, 1)..Point::new(0, 1)])
 4561        });
 4562        editor.join_lines(&JoinLines, window, cx);
 4563        assert_eq!(buffer.read(cx).text(), "aaa bbb c\n  \n\td");
 4564
 4565        // We don't insert a space for a line containing only spaces
 4566        editor.join_lines(&JoinLines, window, cx);
 4567        assert_eq!(buffer.read(cx).text(), "aaa bbb c\n\td");
 4568
 4569        // We ignore any leading tabs
 4570        editor.join_lines(&JoinLines, window, cx);
 4571        assert_eq!(buffer.read(cx).text(), "aaa bbb c d");
 4572
 4573        editor
 4574    });
 4575}
 4576
 4577#[gpui::test]
 4578fn test_join_lines_with_multi_selection(cx: &mut TestAppContext) {
 4579    init_test(cx, |_| {});
 4580
 4581    cx.add_window(|window, cx| {
 4582        let buffer = MultiBuffer::build_simple("aaa\nbbb\nccc\nddd\n\n", cx);
 4583        let mut editor = build_editor(buffer.clone(), window, cx);
 4584        let buffer = buffer.read(cx).as_singleton().unwrap();
 4585
 4586        editor.change_selections(SelectionEffects::no_scroll(), window, cx, |s| {
 4587            s.select_ranges([
 4588                Point::new(0, 2)..Point::new(1, 1),
 4589                Point::new(1, 2)..Point::new(1, 2),
 4590                Point::new(3, 1)..Point::new(3, 2),
 4591            ])
 4592        });
 4593
 4594        editor.join_lines(&JoinLines, window, cx);
 4595        assert_eq!(buffer.read(cx).text(), "aaa bbb ccc\nddd\n");
 4596
 4597        assert_eq!(
 4598            editor
 4599                .selections
 4600                .ranges::<Point>(&editor.display_snapshot(cx)),
 4601            [
 4602                Point::new(0, 7)..Point::new(0, 7),
 4603                Point::new(1, 3)..Point::new(1, 3)
 4604            ]
 4605        );
 4606        editor
 4607    });
 4608}
 4609
 4610#[gpui::test]
 4611async fn test_join_lines_with_git_diff_base(executor: BackgroundExecutor, cx: &mut TestAppContext) {
 4612    init_test(cx, |_| {});
 4613
 4614    let mut cx = EditorTestContext::new(cx).await;
 4615
 4616    let diff_base = r#"
 4617        Line 0
 4618        Line 1
 4619        Line 2
 4620        Line 3
 4621        "#
 4622    .unindent();
 4623
 4624    cx.set_state(
 4625        &r#"
 4626        ˇLine 0
 4627        Line 1
 4628        Line 2
 4629        Line 3
 4630        "#
 4631        .unindent(),
 4632    );
 4633
 4634    cx.set_head_text(&diff_base);
 4635    executor.run_until_parked();
 4636
 4637    // Join lines
 4638    cx.update_editor(|editor, window, cx| {
 4639        editor.join_lines(&JoinLines, window, cx);
 4640    });
 4641    executor.run_until_parked();
 4642
 4643    cx.assert_editor_state(
 4644        &r#"
 4645        Line 0ˇ Line 1
 4646        Line 2
 4647        Line 3
 4648        "#
 4649        .unindent(),
 4650    );
 4651    // Join again
 4652    cx.update_editor(|editor, window, cx| {
 4653        editor.join_lines(&JoinLines, window, cx);
 4654    });
 4655    executor.run_until_parked();
 4656
 4657    cx.assert_editor_state(
 4658        &r#"
 4659        Line 0 Line 1ˇ Line 2
 4660        Line 3
 4661        "#
 4662        .unindent(),
 4663    );
 4664}
 4665
 4666#[gpui::test]
 4667async fn test_custom_newlines_cause_no_false_positive_diffs(
 4668    executor: BackgroundExecutor,
 4669    cx: &mut TestAppContext,
 4670) {
 4671    init_test(cx, |_| {});
 4672    let mut cx = EditorTestContext::new(cx).await;
 4673    cx.set_state("Line 0\r\nLine 1\rˇ\nLine 2\r\nLine 3");
 4674    cx.set_head_text("Line 0\r\nLine 1\r\nLine 2\r\nLine 3");
 4675    executor.run_until_parked();
 4676
 4677    cx.update_editor(|editor, window, cx| {
 4678        let snapshot = editor.snapshot(window, cx);
 4679        assert_eq!(
 4680            snapshot
 4681                .buffer_snapshot()
 4682                .diff_hunks_in_range(0..snapshot.buffer_snapshot().len())
 4683                .collect::<Vec<_>>(),
 4684            Vec::new(),
 4685            "Should not have any diffs for files with custom newlines"
 4686        );
 4687    });
 4688}
 4689
 4690#[gpui::test]
 4691async fn test_manipulate_immutable_lines_with_single_selection(cx: &mut TestAppContext) {
 4692    init_test(cx, |_| {});
 4693
 4694    let mut cx = EditorTestContext::new(cx).await;
 4695
 4696    // Test sort_lines_case_insensitive()
 4697    cx.set_state(indoc! {"
 4698        «z
 4699        y
 4700        x
 4701        Z
 4702        Y
 4703        Xˇ»
 4704    "});
 4705    cx.update_editor(|e, window, cx| {
 4706        e.sort_lines_case_insensitive(&SortLinesCaseInsensitive, window, cx)
 4707    });
 4708    cx.assert_editor_state(indoc! {"
 4709        «x
 4710        X
 4711        y
 4712        Y
 4713        z
 4714        Zˇ»
 4715    "});
 4716
 4717    // Test sort_lines_by_length()
 4718    //
 4719    // Demonstrates:
 4720    // - ∞ is 3 bytes UTF-8, but sorted by its char count (1)
 4721    // - sort is stable
 4722    cx.set_state(indoc! {"
 4723        «123
 4724        æ
 4725        12
 4726 4727        1
 4728        æˇ»
 4729    "});
 4730    cx.update_editor(|e, window, cx| e.sort_lines_by_length(&SortLinesByLength, window, cx));
 4731    cx.assert_editor_state(indoc! {"
 4732        «æ
 4733 4734        1
 4735        æ
 4736        12
 4737        123ˇ»
 4738    "});
 4739
 4740    // Test reverse_lines()
 4741    cx.set_state(indoc! {"
 4742        «5
 4743        4
 4744        3
 4745        2
 4746        1ˇ»
 4747    "});
 4748    cx.update_editor(|e, window, cx| e.reverse_lines(&ReverseLines, window, cx));
 4749    cx.assert_editor_state(indoc! {"
 4750        «1
 4751        2
 4752        3
 4753        4
 4754        5ˇ»
 4755    "});
 4756
 4757    // Skip testing shuffle_line()
 4758
 4759    // From here on out, test more complex cases of manipulate_immutable_lines() with a single driver method: sort_lines_case_sensitive()
 4760    // Since all methods calling manipulate_immutable_lines() are doing the exact same general thing (reordering lines)
 4761
 4762    // Don't manipulate when cursor is on single line, but expand the selection
 4763    cx.set_state(indoc! {"
 4764        ddˇdd
 4765        ccc
 4766        bb
 4767        a
 4768    "});
 4769    cx.update_editor(|e, window, cx| {
 4770        e.sort_lines_case_sensitive(&SortLinesCaseSensitive, window, cx)
 4771    });
 4772    cx.assert_editor_state(indoc! {"
 4773        «ddddˇ»
 4774        ccc
 4775        bb
 4776        a
 4777    "});
 4778
 4779    // Basic manipulate case
 4780    // Start selection moves to column 0
 4781    // End of selection shrinks to fit shorter line
 4782    cx.set_state(indoc! {"
 4783        dd«d
 4784        ccc
 4785        bb
 4786        aaaaaˇ»
 4787    "});
 4788    cx.update_editor(|e, window, cx| {
 4789        e.sort_lines_case_sensitive(&SortLinesCaseSensitive, window, cx)
 4790    });
 4791    cx.assert_editor_state(indoc! {"
 4792        «aaaaa
 4793        bb
 4794        ccc
 4795        dddˇ»
 4796    "});
 4797
 4798    // Manipulate case with newlines
 4799    cx.set_state(indoc! {"
 4800        dd«d
 4801        ccc
 4802
 4803        bb
 4804        aaaaa
 4805
 4806        ˇ»
 4807    "});
 4808    cx.update_editor(|e, window, cx| {
 4809        e.sort_lines_case_sensitive(&SortLinesCaseSensitive, window, cx)
 4810    });
 4811    cx.assert_editor_state(indoc! {"
 4812        «
 4813
 4814        aaaaa
 4815        bb
 4816        ccc
 4817        dddˇ»
 4818
 4819    "});
 4820
 4821    // Adding new line
 4822    cx.set_state(indoc! {"
 4823        aa«a
 4824        bbˇ»b
 4825    "});
 4826    cx.update_editor(|e, window, cx| {
 4827        e.manipulate_immutable_lines(window, cx, |lines| lines.push("added_line"))
 4828    });
 4829    cx.assert_editor_state(indoc! {"
 4830        «aaa
 4831        bbb
 4832        added_lineˇ»
 4833    "});
 4834
 4835    // Removing line
 4836    cx.set_state(indoc! {"
 4837        aa«a
 4838        bbbˇ»
 4839    "});
 4840    cx.update_editor(|e, window, cx| {
 4841        e.manipulate_immutable_lines(window, cx, |lines| {
 4842            lines.pop();
 4843        })
 4844    });
 4845    cx.assert_editor_state(indoc! {"
 4846        «aaaˇ»
 4847    "});
 4848
 4849    // Removing all lines
 4850    cx.set_state(indoc! {"
 4851        aa«a
 4852        bbbˇ»
 4853    "});
 4854    cx.update_editor(|e, window, cx| {
 4855        e.manipulate_immutable_lines(window, cx, |lines| {
 4856            lines.drain(..);
 4857        })
 4858    });
 4859    cx.assert_editor_state(indoc! {"
 4860        ˇ
 4861    "});
 4862}
 4863
 4864#[gpui::test]
 4865async fn test_unique_lines_multi_selection(cx: &mut TestAppContext) {
 4866    init_test(cx, |_| {});
 4867
 4868    let mut cx = EditorTestContext::new(cx).await;
 4869
 4870    // Consider continuous selection as single selection
 4871    cx.set_state(indoc! {"
 4872        Aaa«aa
 4873        cˇ»c«c
 4874        bb
 4875        aaaˇ»aa
 4876    "});
 4877    cx.update_editor(|e, window, cx| {
 4878        e.unique_lines_case_sensitive(&UniqueLinesCaseSensitive, window, cx)
 4879    });
 4880    cx.assert_editor_state(indoc! {"
 4881        «Aaaaa
 4882        ccc
 4883        bb
 4884        aaaaaˇ»
 4885    "});
 4886
 4887    cx.set_state(indoc! {"
 4888        Aaa«aa
 4889        cˇ»c«c
 4890        bb
 4891        aaaˇ»aa
 4892    "});
 4893    cx.update_editor(|e, window, cx| {
 4894        e.unique_lines_case_insensitive(&UniqueLinesCaseInsensitive, window, cx)
 4895    });
 4896    cx.assert_editor_state(indoc! {"
 4897        «Aaaaa
 4898        ccc
 4899        bbˇ»
 4900    "});
 4901
 4902    // Consider non continuous selection as distinct dedup operations
 4903    cx.set_state(indoc! {"
 4904        «aaaaa
 4905        bb
 4906        aaaaa
 4907        aaaaaˇ»
 4908
 4909        aaa«aaˇ»
 4910    "});
 4911    cx.update_editor(|e, window, cx| {
 4912        e.unique_lines_case_sensitive(&UniqueLinesCaseSensitive, window, cx)
 4913    });
 4914    cx.assert_editor_state(indoc! {"
 4915        «aaaaa
 4916        bbˇ»
 4917
 4918        «aaaaaˇ»
 4919    "});
 4920}
 4921
 4922#[gpui::test]
 4923async fn test_unique_lines_single_selection(cx: &mut TestAppContext) {
 4924    init_test(cx, |_| {});
 4925
 4926    let mut cx = EditorTestContext::new(cx).await;
 4927
 4928    cx.set_state(indoc! {"
 4929        «Aaa
 4930        aAa
 4931        Aaaˇ»
 4932    "});
 4933    cx.update_editor(|e, window, cx| {
 4934        e.unique_lines_case_sensitive(&UniqueLinesCaseSensitive, window, cx)
 4935    });
 4936    cx.assert_editor_state(indoc! {"
 4937        «Aaa
 4938        aAaˇ»
 4939    "});
 4940
 4941    cx.set_state(indoc! {"
 4942        «Aaa
 4943        aAa
 4944        aaAˇ»
 4945    "});
 4946    cx.update_editor(|e, window, cx| {
 4947        e.unique_lines_case_insensitive(&UniqueLinesCaseInsensitive, window, cx)
 4948    });
 4949    cx.assert_editor_state(indoc! {"
 4950        «Aaaˇ»
 4951    "});
 4952}
 4953
 4954#[gpui::test]
 4955async fn test_wrap_in_tag_single_selection(cx: &mut TestAppContext) {
 4956    init_test(cx, |_| {});
 4957
 4958    let mut cx = EditorTestContext::new(cx).await;
 4959
 4960    let js_language = Arc::new(Language::new(
 4961        LanguageConfig {
 4962            name: "JavaScript".into(),
 4963            wrap_characters: Some(language::WrapCharactersConfig {
 4964                start_prefix: "<".into(),
 4965                start_suffix: ">".into(),
 4966                end_prefix: "</".into(),
 4967                end_suffix: ">".into(),
 4968            }),
 4969            ..LanguageConfig::default()
 4970        },
 4971        None,
 4972    ));
 4973
 4974    cx.update_buffer(|buffer, cx| buffer.set_language(Some(js_language), cx));
 4975
 4976    cx.set_state(indoc! {"
 4977        «testˇ»
 4978    "});
 4979    cx.update_editor(|e, window, cx| e.wrap_selections_in_tag(&WrapSelectionsInTag, window, cx));
 4980    cx.assert_editor_state(indoc! {"
 4981        <«ˇ»>test</«ˇ»>
 4982    "});
 4983
 4984    cx.set_state(indoc! {"
 4985        «test
 4986         testˇ»
 4987    "});
 4988    cx.update_editor(|e, window, cx| e.wrap_selections_in_tag(&WrapSelectionsInTag, window, cx));
 4989    cx.assert_editor_state(indoc! {"
 4990        <«ˇ»>test
 4991         test</«ˇ»>
 4992    "});
 4993
 4994    cx.set_state(indoc! {"
 4995        teˇst
 4996    "});
 4997    cx.update_editor(|e, window, cx| e.wrap_selections_in_tag(&WrapSelectionsInTag, window, cx));
 4998    cx.assert_editor_state(indoc! {"
 4999        te<«ˇ»></«ˇ»>st
 5000    "});
 5001}
 5002
 5003#[gpui::test]
 5004async fn test_wrap_in_tag_multi_selection(cx: &mut TestAppContext) {
 5005    init_test(cx, |_| {});
 5006
 5007    let mut cx = EditorTestContext::new(cx).await;
 5008
 5009    let js_language = Arc::new(Language::new(
 5010        LanguageConfig {
 5011            name: "JavaScript".into(),
 5012            wrap_characters: Some(language::WrapCharactersConfig {
 5013                start_prefix: "<".into(),
 5014                start_suffix: ">".into(),
 5015                end_prefix: "</".into(),
 5016                end_suffix: ">".into(),
 5017            }),
 5018            ..LanguageConfig::default()
 5019        },
 5020        None,
 5021    ));
 5022
 5023    cx.update_buffer(|buffer, cx| buffer.set_language(Some(js_language), cx));
 5024
 5025    cx.set_state(indoc! {"
 5026        «testˇ»
 5027        «testˇ» «testˇ»
 5028        «testˇ»
 5029    "});
 5030    cx.update_editor(|e, window, cx| e.wrap_selections_in_tag(&WrapSelectionsInTag, window, cx));
 5031    cx.assert_editor_state(indoc! {"
 5032        <«ˇ»>test</«ˇ»>
 5033        <«ˇ»>test</«ˇ»> <«ˇ»>test</«ˇ»>
 5034        <«ˇ»>test</«ˇ»>
 5035    "});
 5036
 5037    cx.set_state(indoc! {"
 5038        «test
 5039         testˇ»
 5040        «test
 5041         testˇ»
 5042    "});
 5043    cx.update_editor(|e, window, cx| e.wrap_selections_in_tag(&WrapSelectionsInTag, window, cx));
 5044    cx.assert_editor_state(indoc! {"
 5045        <«ˇ»>test
 5046         test</«ˇ»>
 5047        <«ˇ»>test
 5048         test</«ˇ»>
 5049    "});
 5050}
 5051
 5052#[gpui::test]
 5053async fn test_wrap_in_tag_does_nothing_in_unsupported_languages(cx: &mut TestAppContext) {
 5054    init_test(cx, |_| {});
 5055
 5056    let mut cx = EditorTestContext::new(cx).await;
 5057
 5058    let plaintext_language = Arc::new(Language::new(
 5059        LanguageConfig {
 5060            name: "Plain Text".into(),
 5061            ..LanguageConfig::default()
 5062        },
 5063        None,
 5064    ));
 5065
 5066    cx.update_buffer(|buffer, cx| buffer.set_language(Some(plaintext_language), cx));
 5067
 5068    cx.set_state(indoc! {"
 5069        «testˇ»
 5070    "});
 5071    cx.update_editor(|e, window, cx| e.wrap_selections_in_tag(&WrapSelectionsInTag, window, cx));
 5072    cx.assert_editor_state(indoc! {"
 5073      «testˇ»
 5074    "});
 5075}
 5076
 5077#[gpui::test]
 5078async fn test_manipulate_immutable_lines_with_multi_selection(cx: &mut TestAppContext) {
 5079    init_test(cx, |_| {});
 5080
 5081    let mut cx = EditorTestContext::new(cx).await;
 5082
 5083    // Manipulate with multiple selections on a single line
 5084    cx.set_state(indoc! {"
 5085        dd«dd
 5086        cˇ»c«c
 5087        bb
 5088        aaaˇ»aa
 5089    "});
 5090    cx.update_editor(|e, window, cx| {
 5091        e.sort_lines_case_sensitive(&SortLinesCaseSensitive, window, cx)
 5092    });
 5093    cx.assert_editor_state(indoc! {"
 5094        «aaaaa
 5095        bb
 5096        ccc
 5097        ddddˇ»
 5098    "});
 5099
 5100    // Manipulate with multiple disjoin selections
 5101    cx.set_state(indoc! {"
 5102 5103        4
 5104        3
 5105        2
 5106        1ˇ»
 5107
 5108        dd«dd
 5109        ccc
 5110        bb
 5111        aaaˇ»aa
 5112    "});
 5113    cx.update_editor(|e, window, cx| {
 5114        e.sort_lines_case_sensitive(&SortLinesCaseSensitive, window, cx)
 5115    });
 5116    cx.assert_editor_state(indoc! {"
 5117        «1
 5118        2
 5119        3
 5120        4
 5121        5ˇ»
 5122
 5123        «aaaaa
 5124        bb
 5125        ccc
 5126        ddddˇ»
 5127    "});
 5128
 5129    // Adding lines on each selection
 5130    cx.set_state(indoc! {"
 5131 5132        1ˇ»
 5133
 5134        bb«bb
 5135        aaaˇ»aa
 5136    "});
 5137    cx.update_editor(|e, window, cx| {
 5138        e.manipulate_immutable_lines(window, cx, |lines| lines.push("added line"))
 5139    });
 5140    cx.assert_editor_state(indoc! {"
 5141        «2
 5142        1
 5143        added lineˇ»
 5144
 5145        «bbbb
 5146        aaaaa
 5147        added lineˇ»
 5148    "});
 5149
 5150    // Removing lines on each selection
 5151    cx.set_state(indoc! {"
 5152 5153        1ˇ»
 5154
 5155        bb«bb
 5156        aaaˇ»aa
 5157    "});
 5158    cx.update_editor(|e, window, cx| {
 5159        e.manipulate_immutable_lines(window, cx, |lines| {
 5160            lines.pop();
 5161        })
 5162    });
 5163    cx.assert_editor_state(indoc! {"
 5164        «2ˇ»
 5165
 5166        «bbbbˇ»
 5167    "});
 5168}
 5169
 5170#[gpui::test]
 5171async fn test_convert_indentation_to_spaces(cx: &mut TestAppContext) {
 5172    init_test(cx, |settings| {
 5173        settings.defaults.tab_size = NonZeroU32::new(3)
 5174    });
 5175
 5176    let mut cx = EditorTestContext::new(cx).await;
 5177
 5178    // MULTI SELECTION
 5179    // Ln.1 "«" tests empty lines
 5180    // Ln.9 tests just leading whitespace
 5181    cx.set_state(indoc! {"
 5182        «
 5183        abc                 // No indentationˇ»
 5184        «\tabc              // 1 tabˇ»
 5185        \t\tabc «      ˇ»   // 2 tabs
 5186        \t ab«c             // Tab followed by space
 5187         \tabc              // Space followed by tab (3 spaces should be the result)
 5188        \t \t  \t   \tabc   // Mixed indentation (tab conversion depends on the column)
 5189           abˇ»ˇc   ˇ    ˇ  // Already space indented«
 5190        \t
 5191        \tabc\tdef          // Only the leading tab is manipulatedˇ»
 5192    "});
 5193    cx.update_editor(|e, window, cx| {
 5194        e.convert_indentation_to_spaces(&ConvertIndentationToSpaces, window, cx);
 5195    });
 5196    cx.assert_editor_state(
 5197        indoc! {"
 5198            «
 5199            abc                 // No indentation
 5200               abc              // 1 tab
 5201                  abc          // 2 tabs
 5202                abc             // Tab followed by space
 5203               abc              // Space followed by tab (3 spaces should be the result)
 5204                           abc   // Mixed indentation (tab conversion depends on the column)
 5205               abc         // Already space indented
 5206               ·
 5207               abc\tdef          // Only the leading tab is manipulatedˇ»
 5208        "}
 5209        .replace("·", "")
 5210        .as_str(), // · used as placeholder to prevent format-on-save from removing whitespace
 5211    );
 5212
 5213    // Test on just a few lines, the others should remain unchanged
 5214    // Only lines (3, 5, 10, 11) should change
 5215    cx.set_state(
 5216        indoc! {"
 5217            ·
 5218            abc                 // No indentation
 5219            \tabcˇ               // 1 tab
 5220            \t\tabc             // 2 tabs
 5221            \t abcˇ              // Tab followed by space
 5222             \tabc              // Space followed by tab (3 spaces should be the result)
 5223            \t \t  \t   \tabc   // Mixed indentation (tab conversion depends on the column)
 5224               abc              // Already space indented
 5225            «\t
 5226            \tabc\tdef          // Only the leading tab is manipulatedˇ»
 5227        "}
 5228        .replace("·", "")
 5229        .as_str(), // · used as placeholder to prevent format-on-save from removing whitespace
 5230    );
 5231    cx.update_editor(|e, window, cx| {
 5232        e.convert_indentation_to_spaces(&ConvertIndentationToSpaces, window, cx);
 5233    });
 5234    cx.assert_editor_state(
 5235        indoc! {"
 5236            ·
 5237            abc                 // No indentation
 5238            «   abc               // 1 tabˇ»
 5239            \t\tabc             // 2 tabs
 5240            «    abc              // Tab followed by spaceˇ»
 5241             \tabc              // Space followed by tab (3 spaces should be the result)
 5242            \t \t  \t   \tabc   // Mixed indentation (tab conversion depends on the column)
 5243               abc              // Already space indented
 5244            «   ·
 5245               abc\tdef          // Only the leading tab is manipulatedˇ»
 5246        "}
 5247        .replace("·", "")
 5248        .as_str(), // · used as placeholder to prevent format-on-save from removing whitespace
 5249    );
 5250
 5251    // SINGLE SELECTION
 5252    // Ln.1 "«" tests empty lines
 5253    // Ln.9 tests just leading whitespace
 5254    cx.set_state(indoc! {"
 5255        «
 5256        abc                 // No indentation
 5257        \tabc               // 1 tab
 5258        \t\tabc             // 2 tabs
 5259        \t abc              // Tab followed by space
 5260         \tabc              // Space followed by tab (3 spaces should be the result)
 5261        \t \t  \t   \tabc   // Mixed indentation (tab conversion depends on the column)
 5262           abc              // Already space indented
 5263        \t
 5264        \tabc\tdef          // Only the leading tab is manipulatedˇ»
 5265    "});
 5266    cx.update_editor(|e, window, cx| {
 5267        e.convert_indentation_to_spaces(&ConvertIndentationToSpaces, window, cx);
 5268    });
 5269    cx.assert_editor_state(
 5270        indoc! {"
 5271            «
 5272            abc                 // No indentation
 5273               abc               // 1 tab
 5274                  abc             // 2 tabs
 5275                abc              // Tab followed by space
 5276               abc              // Space followed by tab (3 spaces should be the result)
 5277                           abc   // Mixed indentation (tab conversion depends on the column)
 5278               abc              // Already space indented
 5279               ·
 5280               abc\tdef          // Only the leading tab is manipulatedˇ»
 5281        "}
 5282        .replace("·", "")
 5283        .as_str(), // · used as placeholder to prevent format-on-save from removing whitespace
 5284    );
 5285}
 5286
 5287#[gpui::test]
 5288async fn test_convert_indentation_to_tabs(cx: &mut TestAppContext) {
 5289    init_test(cx, |settings| {
 5290        settings.defaults.tab_size = NonZeroU32::new(3)
 5291    });
 5292
 5293    let mut cx = EditorTestContext::new(cx).await;
 5294
 5295    // MULTI SELECTION
 5296    // Ln.1 "«" tests empty lines
 5297    // Ln.11 tests just leading whitespace
 5298    cx.set_state(indoc! {"
 5299        «
 5300        abˇ»ˇc                 // No indentation
 5301         abc    ˇ        ˇ    // 1 space (< 3 so dont convert)
 5302          abc  «             // 2 spaces (< 3 so dont convert)
 5303           abc              // 3 spaces (convert)
 5304             abc ˇ»           // 5 spaces (1 tab + 2 spaces)
 5305        «\tˇ»\t«\tˇ»abc           // Already tab indented
 5306        «\t abc              // Tab followed by space
 5307         \tabc              // Space followed by tab (should be consumed due to tab)
 5308        \t \t  \t   \tabc   // Mixed indentation (first 3 spaces are consumed, the others are converted)
 5309           \tˇ»  «\t
 5310           abcˇ»   \t ˇˇˇ        // Only the leading spaces should be converted
 5311    "});
 5312    cx.update_editor(|e, window, cx| {
 5313        e.convert_indentation_to_tabs(&ConvertIndentationToTabs, window, cx);
 5314    });
 5315    cx.assert_editor_state(indoc! {"
 5316        «
 5317        abc                 // No indentation
 5318         abc                // 1 space (< 3 so dont convert)
 5319          abc               // 2 spaces (< 3 so dont convert)
 5320        \tabc              // 3 spaces (convert)
 5321        \t  abc            // 5 spaces (1 tab + 2 spaces)
 5322        \t\t\tabc           // Already tab indented
 5323        \t abc              // Tab followed by space
 5324        \tabc              // Space followed by tab (should be consumed due to tab)
 5325        \t\t\t\t\tabc   // Mixed indentation (first 3 spaces are consumed, the others are converted)
 5326        \t\t\t
 5327        \tabc   \t         // Only the leading spaces should be convertedˇ»
 5328    "});
 5329
 5330    // Test on just a few lines, the other should remain unchanged
 5331    // Only lines (4, 8, 11, 12) should change
 5332    cx.set_state(
 5333        indoc! {"
 5334            ·
 5335            abc                 // No indentation
 5336             abc                // 1 space (< 3 so dont convert)
 5337              abc               // 2 spaces (< 3 so dont convert)
 5338            «   abc              // 3 spaces (convert)ˇ»
 5339                 abc            // 5 spaces (1 tab + 2 spaces)
 5340            \t\t\tabc           // Already tab indented
 5341            \t abc              // Tab followed by space
 5342             \tabc      ˇ        // Space followed by tab (should be consumed due to tab)
 5343               \t\t  \tabc      // Mixed indentation
 5344            \t \t  \t   \tabc   // Mixed indentation
 5345               \t  \tˇ
 5346            «   abc   \t         // Only the leading spaces should be convertedˇ»
 5347        "}
 5348        .replace("·", "")
 5349        .as_str(), // · used as placeholder to prevent format-on-save from removing whitespace
 5350    );
 5351    cx.update_editor(|e, window, cx| {
 5352        e.convert_indentation_to_tabs(&ConvertIndentationToTabs, window, cx);
 5353    });
 5354    cx.assert_editor_state(
 5355        indoc! {"
 5356            ·
 5357            abc                 // No indentation
 5358             abc                // 1 space (< 3 so dont convert)
 5359              abc               // 2 spaces (< 3 so dont convert)
 5360            «\tabc              // 3 spaces (convert)ˇ»
 5361                 abc            // 5 spaces (1 tab + 2 spaces)
 5362            \t\t\tabc           // Already tab indented
 5363            \t abc              // Tab followed by space
 5364            «\tabc              // Space followed by tab (should be consumed due to tab)ˇ»
 5365               \t\t  \tabc      // Mixed indentation
 5366            \t \t  \t   \tabc   // Mixed indentation
 5367            «\t\t\t
 5368            \tabc   \t         // Only the leading spaces should be convertedˇ»
 5369        "}
 5370        .replace("·", "")
 5371        .as_str(), // · used as placeholder to prevent format-on-save from removing whitespace
 5372    );
 5373
 5374    // SINGLE SELECTION
 5375    // Ln.1 "«" tests empty lines
 5376    // Ln.11 tests just leading whitespace
 5377    cx.set_state(indoc! {"
 5378        «
 5379        abc                 // No indentation
 5380         abc                // 1 space (< 3 so dont convert)
 5381          abc               // 2 spaces (< 3 so dont convert)
 5382           abc              // 3 spaces (convert)
 5383             abc            // 5 spaces (1 tab + 2 spaces)
 5384        \t\t\tabc           // Already tab indented
 5385        \t abc              // Tab followed by space
 5386         \tabc              // Space followed by tab (should be consumed due to tab)
 5387        \t \t  \t   \tabc   // Mixed indentation (first 3 spaces are consumed, the others are converted)
 5388           \t  \t
 5389           abc   \t         // Only the leading spaces should be convertedˇ»
 5390    "});
 5391    cx.update_editor(|e, window, cx| {
 5392        e.convert_indentation_to_tabs(&ConvertIndentationToTabs, window, cx);
 5393    });
 5394    cx.assert_editor_state(indoc! {"
 5395        «
 5396        abc                 // No indentation
 5397         abc                // 1 space (< 3 so dont convert)
 5398          abc               // 2 spaces (< 3 so dont convert)
 5399        \tabc              // 3 spaces (convert)
 5400        \t  abc            // 5 spaces (1 tab + 2 spaces)
 5401        \t\t\tabc           // Already tab indented
 5402        \t abc              // Tab followed by space
 5403        \tabc              // Space followed by tab (should be consumed due to tab)
 5404        \t\t\t\t\tabc   // Mixed indentation (first 3 spaces are consumed, the others are converted)
 5405        \t\t\t
 5406        \tabc   \t         // Only the leading spaces should be convertedˇ»
 5407    "});
 5408}
 5409
 5410#[gpui::test]
 5411async fn test_toggle_case(cx: &mut TestAppContext) {
 5412    init_test(cx, |_| {});
 5413
 5414    let mut cx = EditorTestContext::new(cx).await;
 5415
 5416    // If all lower case -> upper case
 5417    cx.set_state(indoc! {"
 5418        «hello worldˇ»
 5419    "});
 5420    cx.update_editor(|e, window, cx| e.toggle_case(&ToggleCase, window, cx));
 5421    cx.assert_editor_state(indoc! {"
 5422        «HELLO WORLDˇ»
 5423    "});
 5424
 5425    // If all upper case -> lower case
 5426    cx.set_state(indoc! {"
 5427        «HELLO WORLDˇ»
 5428    "});
 5429    cx.update_editor(|e, window, cx| e.toggle_case(&ToggleCase, window, cx));
 5430    cx.assert_editor_state(indoc! {"
 5431        «hello worldˇ»
 5432    "});
 5433
 5434    // If any upper case characters are identified -> lower case
 5435    // This matches JetBrains IDEs
 5436    cx.set_state(indoc! {"
 5437        «hEllo worldˇ»
 5438    "});
 5439    cx.update_editor(|e, window, cx| e.toggle_case(&ToggleCase, window, cx));
 5440    cx.assert_editor_state(indoc! {"
 5441        «hello worldˇ»
 5442    "});
 5443}
 5444
 5445#[gpui::test]
 5446async fn test_convert_to_sentence_case(cx: &mut TestAppContext) {
 5447    init_test(cx, |_| {});
 5448
 5449    let mut cx = EditorTestContext::new(cx).await;
 5450
 5451    cx.set_state(indoc! {"
 5452        «implement-windows-supportˇ»
 5453    "});
 5454    cx.update_editor(|e, window, cx| {
 5455        e.convert_to_sentence_case(&ConvertToSentenceCase, window, cx)
 5456    });
 5457    cx.assert_editor_state(indoc! {"
 5458        «Implement windows supportˇ»
 5459    "});
 5460}
 5461
 5462#[gpui::test]
 5463async fn test_manipulate_text(cx: &mut TestAppContext) {
 5464    init_test(cx, |_| {});
 5465
 5466    let mut cx = EditorTestContext::new(cx).await;
 5467
 5468    // Test convert_to_upper_case()
 5469    cx.set_state(indoc! {"
 5470        «hello worldˇ»
 5471    "});
 5472    cx.update_editor(|e, window, cx| e.convert_to_upper_case(&ConvertToUpperCase, window, cx));
 5473    cx.assert_editor_state(indoc! {"
 5474        «HELLO WORLDˇ»
 5475    "});
 5476
 5477    // Test convert_to_lower_case()
 5478    cx.set_state(indoc! {"
 5479        «HELLO WORLDˇ»
 5480    "});
 5481    cx.update_editor(|e, window, cx| e.convert_to_lower_case(&ConvertToLowerCase, window, cx));
 5482    cx.assert_editor_state(indoc! {"
 5483        «hello worldˇ»
 5484    "});
 5485
 5486    // Test multiple line, single selection case
 5487    cx.set_state(indoc! {"
 5488        «The quick brown
 5489        fox jumps over
 5490        the lazy dogˇ»
 5491    "});
 5492    cx.update_editor(|e, window, cx| e.convert_to_title_case(&ConvertToTitleCase, window, cx));
 5493    cx.assert_editor_state(indoc! {"
 5494        «The Quick Brown
 5495        Fox Jumps Over
 5496        The Lazy Dogˇ»
 5497    "});
 5498
 5499    // Test multiple line, single selection case
 5500    cx.set_state(indoc! {"
 5501        «The quick brown
 5502        fox jumps over
 5503        the lazy dogˇ»
 5504    "});
 5505    cx.update_editor(|e, window, cx| {
 5506        e.convert_to_upper_camel_case(&ConvertToUpperCamelCase, window, cx)
 5507    });
 5508    cx.assert_editor_state(indoc! {"
 5509        «TheQuickBrown
 5510        FoxJumpsOver
 5511        TheLazyDogˇ»
 5512    "});
 5513
 5514    // From here on out, test more complex cases of manipulate_text()
 5515
 5516    // Test no selection case - should affect words cursors are in
 5517    // Cursor at beginning, middle, and end of word
 5518    cx.set_state(indoc! {"
 5519        ˇhello big beauˇtiful worldˇ
 5520    "});
 5521    cx.update_editor(|e, window, cx| e.convert_to_upper_case(&ConvertToUpperCase, window, cx));
 5522    cx.assert_editor_state(indoc! {"
 5523        «HELLOˇ» big «BEAUTIFULˇ» «WORLDˇ»
 5524    "});
 5525
 5526    // Test multiple selections on a single line and across multiple lines
 5527    cx.set_state(indoc! {"
 5528        «Theˇ» quick «brown
 5529        foxˇ» jumps «overˇ»
 5530        the «lazyˇ» dog
 5531    "});
 5532    cx.update_editor(|e, window, cx| e.convert_to_upper_case(&ConvertToUpperCase, window, cx));
 5533    cx.assert_editor_state(indoc! {"
 5534        «THEˇ» quick «BROWN
 5535        FOXˇ» jumps «OVERˇ»
 5536        the «LAZYˇ» dog
 5537    "});
 5538
 5539    // Test case where text length grows
 5540    cx.set_state(indoc! {"
 5541        «tschüߡ»
 5542    "});
 5543    cx.update_editor(|e, window, cx| e.convert_to_upper_case(&ConvertToUpperCase, window, cx));
 5544    cx.assert_editor_state(indoc! {"
 5545        «TSCHÜSSˇ»
 5546    "});
 5547
 5548    // Test to make sure we don't crash when text shrinks
 5549    cx.set_state(indoc! {"
 5550        aaa_bbbˇ
 5551    "});
 5552    cx.update_editor(|e, window, cx| {
 5553        e.convert_to_lower_camel_case(&ConvertToLowerCamelCase, window, cx)
 5554    });
 5555    cx.assert_editor_state(indoc! {"
 5556        «aaaBbbˇ»
 5557    "});
 5558
 5559    // Test to make sure we all aware of the fact that each word can grow and shrink
 5560    // Final selections should be aware of this fact
 5561    cx.set_state(indoc! {"
 5562        aaa_bˇbb bbˇb_ccc ˇccc_ddd
 5563    "});
 5564    cx.update_editor(|e, window, cx| {
 5565        e.convert_to_lower_camel_case(&ConvertToLowerCamelCase, window, cx)
 5566    });
 5567    cx.assert_editor_state(indoc! {"
 5568        «aaaBbbˇ» «bbbCccˇ» «cccDddˇ»
 5569    "});
 5570
 5571    cx.set_state(indoc! {"
 5572        «hElLo, WoRld!ˇ»
 5573    "});
 5574    cx.update_editor(|e, window, cx| {
 5575        e.convert_to_opposite_case(&ConvertToOppositeCase, window, cx)
 5576    });
 5577    cx.assert_editor_state(indoc! {"
 5578        «HeLlO, wOrLD!ˇ»
 5579    "});
 5580
 5581    // Test selections with `line_mode() = true`.
 5582    cx.update_editor(|editor, _window, _cx| editor.selections.set_line_mode(true));
 5583    cx.set_state(indoc! {"
 5584        «The quick brown
 5585        fox jumps over
 5586        tˇ»he lazy dog
 5587    "});
 5588    cx.update_editor(|e, window, cx| e.convert_to_upper_case(&ConvertToUpperCase, window, cx));
 5589    cx.assert_editor_state(indoc! {"
 5590        «THE QUICK BROWN
 5591        FOX JUMPS OVER
 5592        THE LAZY DOGˇ»
 5593    "});
 5594}
 5595
 5596#[gpui::test]
 5597fn test_duplicate_line(cx: &mut TestAppContext) {
 5598    init_test(cx, |_| {});
 5599
 5600    let editor = cx.add_window(|window, cx| {
 5601        let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
 5602        build_editor(buffer, window, cx)
 5603    });
 5604    _ = editor.update(cx, |editor, window, cx| {
 5605        editor.change_selections(SelectionEffects::no_scroll(), window, cx, |s| {
 5606            s.select_display_ranges([
 5607                DisplayPoint::new(DisplayRow(0), 0)..DisplayPoint::new(DisplayRow(0), 1),
 5608                DisplayPoint::new(DisplayRow(0), 2)..DisplayPoint::new(DisplayRow(0), 2),
 5609                DisplayPoint::new(DisplayRow(1), 0)..DisplayPoint::new(DisplayRow(1), 0),
 5610                DisplayPoint::new(DisplayRow(3), 0)..DisplayPoint::new(DisplayRow(3), 0),
 5611            ])
 5612        });
 5613        editor.duplicate_line_down(&DuplicateLineDown, window, cx);
 5614        assert_eq!(editor.display_text(cx), "abc\nabc\ndef\ndef\nghi\n\n");
 5615        assert_eq!(
 5616            editor.selections.display_ranges(cx),
 5617            vec![
 5618                DisplayPoint::new(DisplayRow(1), 0)..DisplayPoint::new(DisplayRow(1), 1),
 5619                DisplayPoint::new(DisplayRow(1), 2)..DisplayPoint::new(DisplayRow(1), 2),
 5620                DisplayPoint::new(DisplayRow(3), 0)..DisplayPoint::new(DisplayRow(3), 0),
 5621                DisplayPoint::new(DisplayRow(6), 0)..DisplayPoint::new(DisplayRow(6), 0),
 5622            ]
 5623        );
 5624    });
 5625
 5626    let editor = cx.add_window(|window, cx| {
 5627        let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
 5628        build_editor(buffer, window, cx)
 5629    });
 5630    _ = editor.update(cx, |editor, window, cx| {
 5631        editor.change_selections(SelectionEffects::no_scroll(), window, cx, |s| {
 5632            s.select_display_ranges([
 5633                DisplayPoint::new(DisplayRow(0), 1)..DisplayPoint::new(DisplayRow(1), 1),
 5634                DisplayPoint::new(DisplayRow(1), 2)..DisplayPoint::new(DisplayRow(2), 1),
 5635            ])
 5636        });
 5637        editor.duplicate_line_down(&DuplicateLineDown, window, cx);
 5638        assert_eq!(editor.display_text(cx), "abc\ndef\nghi\nabc\ndef\nghi\n");
 5639        assert_eq!(
 5640            editor.selections.display_ranges(cx),
 5641            vec![
 5642                DisplayPoint::new(DisplayRow(3), 1)..DisplayPoint::new(DisplayRow(4), 1),
 5643                DisplayPoint::new(DisplayRow(4), 2)..DisplayPoint::new(DisplayRow(5), 1),
 5644            ]
 5645        );
 5646    });
 5647
 5648    // With `move_upwards` the selections stay in place, except for
 5649    // the lines inserted above them
 5650    let editor = cx.add_window(|window, cx| {
 5651        let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
 5652        build_editor(buffer, window, cx)
 5653    });
 5654    _ = editor.update(cx, |editor, window, cx| {
 5655        editor.change_selections(SelectionEffects::no_scroll(), window, cx, |s| {
 5656            s.select_display_ranges([
 5657                DisplayPoint::new(DisplayRow(0), 0)..DisplayPoint::new(DisplayRow(0), 1),
 5658                DisplayPoint::new(DisplayRow(0), 2)..DisplayPoint::new(DisplayRow(0), 2),
 5659                DisplayPoint::new(DisplayRow(1), 0)..DisplayPoint::new(DisplayRow(1), 0),
 5660                DisplayPoint::new(DisplayRow(3), 0)..DisplayPoint::new(DisplayRow(3), 0),
 5661            ])
 5662        });
 5663        editor.duplicate_line_up(&DuplicateLineUp, window, cx);
 5664        assert_eq!(editor.display_text(cx), "abc\nabc\ndef\ndef\nghi\n\n");
 5665        assert_eq!(
 5666            editor.selections.display_ranges(cx),
 5667            vec![
 5668                DisplayPoint::new(DisplayRow(0), 0)..DisplayPoint::new(DisplayRow(0), 1),
 5669                DisplayPoint::new(DisplayRow(0), 2)..DisplayPoint::new(DisplayRow(0), 2),
 5670                DisplayPoint::new(DisplayRow(2), 0)..DisplayPoint::new(DisplayRow(2), 0),
 5671                DisplayPoint::new(DisplayRow(6), 0)..DisplayPoint::new(DisplayRow(6), 0),
 5672            ]
 5673        );
 5674    });
 5675
 5676    let editor = cx.add_window(|window, cx| {
 5677        let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
 5678        build_editor(buffer, window, cx)
 5679    });
 5680    _ = editor.update(cx, |editor, window, cx| {
 5681        editor.change_selections(SelectionEffects::no_scroll(), window, cx, |s| {
 5682            s.select_display_ranges([
 5683                DisplayPoint::new(DisplayRow(0), 1)..DisplayPoint::new(DisplayRow(1), 1),
 5684                DisplayPoint::new(DisplayRow(1), 2)..DisplayPoint::new(DisplayRow(2), 1),
 5685            ])
 5686        });
 5687        editor.duplicate_line_up(&DuplicateLineUp, window, cx);
 5688        assert_eq!(editor.display_text(cx), "abc\ndef\nghi\nabc\ndef\nghi\n");
 5689        assert_eq!(
 5690            editor.selections.display_ranges(cx),
 5691            vec![
 5692                DisplayPoint::new(DisplayRow(0), 1)..DisplayPoint::new(DisplayRow(1), 1),
 5693                DisplayPoint::new(DisplayRow(1), 2)..DisplayPoint::new(DisplayRow(2), 1),
 5694            ]
 5695        );
 5696    });
 5697
 5698    let editor = cx.add_window(|window, cx| {
 5699        let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
 5700        build_editor(buffer, window, cx)
 5701    });
 5702    _ = editor.update(cx, |editor, window, cx| {
 5703        editor.change_selections(SelectionEffects::no_scroll(), window, cx, |s| {
 5704            s.select_display_ranges([
 5705                DisplayPoint::new(DisplayRow(0), 1)..DisplayPoint::new(DisplayRow(1), 1),
 5706                DisplayPoint::new(DisplayRow(1), 2)..DisplayPoint::new(DisplayRow(2), 1),
 5707            ])
 5708        });
 5709        editor.duplicate_selection(&DuplicateSelection, window, cx);
 5710        assert_eq!(editor.display_text(cx), "abc\ndbc\ndef\ngf\nghi\n");
 5711        assert_eq!(
 5712            editor.selections.display_ranges(cx),
 5713            vec![
 5714                DisplayPoint::new(DisplayRow(0), 1)..DisplayPoint::new(DisplayRow(1), 1),
 5715                DisplayPoint::new(DisplayRow(2), 2)..DisplayPoint::new(DisplayRow(3), 1),
 5716            ]
 5717        );
 5718    });
 5719}
 5720
 5721#[gpui::test]
 5722fn test_move_line_up_down(cx: &mut TestAppContext) {
 5723    init_test(cx, |_| {});
 5724
 5725    let editor = cx.add_window(|window, cx| {
 5726        let buffer = MultiBuffer::build_simple(&sample_text(10, 5, 'a'), cx);
 5727        build_editor(buffer, window, cx)
 5728    });
 5729    _ = editor.update(cx, |editor, window, cx| {
 5730        editor.fold_creases(
 5731            vec![
 5732                Crease::simple(Point::new(0, 2)..Point::new(1, 2), FoldPlaceholder::test()),
 5733                Crease::simple(Point::new(2, 3)..Point::new(4, 1), FoldPlaceholder::test()),
 5734                Crease::simple(Point::new(7, 0)..Point::new(8, 4), FoldPlaceholder::test()),
 5735            ],
 5736            true,
 5737            window,
 5738            cx,
 5739        );
 5740        editor.change_selections(SelectionEffects::no_scroll(), window, cx, |s| {
 5741            s.select_display_ranges([
 5742                DisplayPoint::new(DisplayRow(0), 1)..DisplayPoint::new(DisplayRow(0), 1),
 5743                DisplayPoint::new(DisplayRow(3), 1)..DisplayPoint::new(DisplayRow(3), 1),
 5744                DisplayPoint::new(DisplayRow(3), 2)..DisplayPoint::new(DisplayRow(4), 3),
 5745                DisplayPoint::new(DisplayRow(5), 0)..DisplayPoint::new(DisplayRow(5), 2),
 5746            ])
 5747        });
 5748        assert_eq!(
 5749            editor.display_text(cx),
 5750            "aa⋯bbb\nccc⋯eeee\nfffff\nggggg\n⋯i\njjjjj"
 5751        );
 5752
 5753        editor.move_line_up(&MoveLineUp, window, cx);
 5754        assert_eq!(
 5755            editor.display_text(cx),
 5756            "aa⋯bbb\nccc⋯eeee\nggggg\n⋯i\njjjjj\nfffff"
 5757        );
 5758        assert_eq!(
 5759            editor.selections.display_ranges(cx),
 5760            vec![
 5761                DisplayPoint::new(DisplayRow(0), 1)..DisplayPoint::new(DisplayRow(0), 1),
 5762                DisplayPoint::new(DisplayRow(2), 1)..DisplayPoint::new(DisplayRow(2), 1),
 5763                DisplayPoint::new(DisplayRow(2), 2)..DisplayPoint::new(DisplayRow(3), 3),
 5764                DisplayPoint::new(DisplayRow(4), 0)..DisplayPoint::new(DisplayRow(4), 2)
 5765            ]
 5766        );
 5767    });
 5768
 5769    _ = editor.update(cx, |editor, window, cx| {
 5770        editor.move_line_down(&MoveLineDown, window, cx);
 5771        assert_eq!(
 5772            editor.display_text(cx),
 5773            "ccc⋯eeee\naa⋯bbb\nfffff\nggggg\n⋯i\njjjjj"
 5774        );
 5775        assert_eq!(
 5776            editor.selections.display_ranges(cx),
 5777            vec![
 5778                DisplayPoint::new(DisplayRow(1), 1)..DisplayPoint::new(DisplayRow(1), 1),
 5779                DisplayPoint::new(DisplayRow(3), 1)..DisplayPoint::new(DisplayRow(3), 1),
 5780                DisplayPoint::new(DisplayRow(3), 2)..DisplayPoint::new(DisplayRow(4), 3),
 5781                DisplayPoint::new(DisplayRow(5), 0)..DisplayPoint::new(DisplayRow(5), 2)
 5782            ]
 5783        );
 5784    });
 5785
 5786    _ = editor.update(cx, |editor, window, cx| {
 5787        editor.move_line_down(&MoveLineDown, window, cx);
 5788        assert_eq!(
 5789            editor.display_text(cx),
 5790            "ccc⋯eeee\nfffff\naa⋯bbb\nggggg\n⋯i\njjjjj"
 5791        );
 5792        assert_eq!(
 5793            editor.selections.display_ranges(cx),
 5794            vec![
 5795                DisplayPoint::new(DisplayRow(2), 1)..DisplayPoint::new(DisplayRow(2), 1),
 5796                DisplayPoint::new(DisplayRow(3), 1)..DisplayPoint::new(DisplayRow(3), 1),
 5797                DisplayPoint::new(DisplayRow(3), 2)..DisplayPoint::new(DisplayRow(4), 3),
 5798                DisplayPoint::new(DisplayRow(5), 0)..DisplayPoint::new(DisplayRow(5), 2)
 5799            ]
 5800        );
 5801    });
 5802
 5803    _ = editor.update(cx, |editor, window, cx| {
 5804        editor.move_line_up(&MoveLineUp, window, cx);
 5805        assert_eq!(
 5806            editor.display_text(cx),
 5807            "ccc⋯eeee\naa⋯bbb\nggggg\n⋯i\njjjjj\nfffff"
 5808        );
 5809        assert_eq!(
 5810            editor.selections.display_ranges(cx),
 5811            vec![
 5812                DisplayPoint::new(DisplayRow(1), 1)..DisplayPoint::new(DisplayRow(1), 1),
 5813                DisplayPoint::new(DisplayRow(2), 1)..DisplayPoint::new(DisplayRow(2), 1),
 5814                DisplayPoint::new(DisplayRow(2), 2)..DisplayPoint::new(DisplayRow(3), 3),
 5815                DisplayPoint::new(DisplayRow(4), 0)..DisplayPoint::new(DisplayRow(4), 2)
 5816            ]
 5817        );
 5818    });
 5819}
 5820
 5821#[gpui::test]
 5822fn test_move_line_up_selection_at_end_of_fold(cx: &mut TestAppContext) {
 5823    init_test(cx, |_| {});
 5824    let editor = cx.add_window(|window, cx| {
 5825        let buffer = MultiBuffer::build_simple("\n\n\n\n\n\naaaa\nbbbb\ncccc", cx);
 5826        build_editor(buffer, window, cx)
 5827    });
 5828    _ = editor.update(cx, |editor, window, cx| {
 5829        editor.fold_creases(
 5830            vec![Crease::simple(
 5831                Point::new(6, 4)..Point::new(7, 4),
 5832                FoldPlaceholder::test(),
 5833            )],
 5834            true,
 5835            window,
 5836            cx,
 5837        );
 5838        editor.change_selections(SelectionEffects::no_scroll(), window, cx, |s| {
 5839            s.select_ranges([Point::new(7, 4)..Point::new(7, 4)])
 5840        });
 5841        assert_eq!(editor.display_text(cx), "\n\n\n\n\n\naaaa⋯\ncccc");
 5842        editor.move_line_up(&MoveLineUp, window, cx);
 5843        let buffer_text = editor.buffer.read(cx).snapshot(cx).text();
 5844        assert_eq!(buffer_text, "\n\n\n\n\naaaa\nbbbb\n\ncccc");
 5845    });
 5846}
 5847
 5848#[gpui::test]
 5849fn test_move_line_up_down_with_blocks(cx: &mut TestAppContext) {
 5850    init_test(cx, |_| {});
 5851
 5852    let editor = cx.add_window(|window, cx| {
 5853        let buffer = MultiBuffer::build_simple(&sample_text(10, 5, 'a'), cx);
 5854        build_editor(buffer, window, cx)
 5855    });
 5856    _ = editor.update(cx, |editor, window, cx| {
 5857        let snapshot = editor.buffer.read(cx).snapshot(cx);
 5858        editor.insert_blocks(
 5859            [BlockProperties {
 5860                style: BlockStyle::Fixed,
 5861                placement: BlockPlacement::Below(snapshot.anchor_after(Point::new(2, 0))),
 5862                height: Some(1),
 5863                render: Arc::new(|_| div().into_any()),
 5864                priority: 0,
 5865            }],
 5866            Some(Autoscroll::fit()),
 5867            cx,
 5868        );
 5869        editor.change_selections(SelectionEffects::no_scroll(), window, cx, |s| {
 5870            s.select_ranges([Point::new(2, 0)..Point::new(2, 0)])
 5871        });
 5872        editor.move_line_down(&MoveLineDown, window, cx);
 5873    });
 5874}
 5875
 5876#[gpui::test]
 5877async fn test_selections_and_replace_blocks(cx: &mut TestAppContext) {
 5878    init_test(cx, |_| {});
 5879
 5880    let mut cx = EditorTestContext::new(cx).await;
 5881    cx.set_state(
 5882        &"
 5883            ˇzero
 5884            one
 5885            two
 5886            three
 5887            four
 5888            five
 5889        "
 5890        .unindent(),
 5891    );
 5892
 5893    // Create a four-line block that replaces three lines of text.
 5894    cx.update_editor(|editor, window, cx| {
 5895        let snapshot = editor.snapshot(window, cx);
 5896        let snapshot = &snapshot.buffer_snapshot();
 5897        let placement = BlockPlacement::Replace(
 5898            snapshot.anchor_after(Point::new(1, 0))..=snapshot.anchor_after(Point::new(3, 0)),
 5899        );
 5900        editor.insert_blocks(
 5901            [BlockProperties {
 5902                placement,
 5903                height: Some(4),
 5904                style: BlockStyle::Sticky,
 5905                render: Arc::new(|_| gpui::div().into_any_element()),
 5906                priority: 0,
 5907            }],
 5908            None,
 5909            cx,
 5910        );
 5911    });
 5912
 5913    // Move down so that the cursor touches the block.
 5914    cx.update_editor(|editor, window, cx| {
 5915        editor.move_down(&Default::default(), window, cx);
 5916    });
 5917    cx.assert_editor_state(
 5918        &"
 5919            zero
 5920            «one
 5921            two
 5922            threeˇ»
 5923            four
 5924            five
 5925        "
 5926        .unindent(),
 5927    );
 5928
 5929    // Move down past the block.
 5930    cx.update_editor(|editor, window, cx| {
 5931        editor.move_down(&Default::default(), window, cx);
 5932    });
 5933    cx.assert_editor_state(
 5934        &"
 5935            zero
 5936            one
 5937            two
 5938            three
 5939            ˇfour
 5940            five
 5941        "
 5942        .unindent(),
 5943    );
 5944}
 5945
 5946#[gpui::test]
 5947fn test_transpose(cx: &mut TestAppContext) {
 5948    init_test(cx, |_| {});
 5949
 5950    _ = cx.add_window(|window, cx| {
 5951        let mut editor = build_editor(MultiBuffer::build_simple("abc", cx), window, cx);
 5952        editor.set_style(EditorStyle::default(), window, cx);
 5953        editor.change_selections(SelectionEffects::no_scroll(), window, cx, |s| {
 5954            s.select_ranges([1..1])
 5955        });
 5956        editor.transpose(&Default::default(), window, cx);
 5957        assert_eq!(editor.text(cx), "bac");
 5958        assert_eq!(
 5959            editor.selections.ranges(&editor.display_snapshot(cx)),
 5960            [2..2]
 5961        );
 5962
 5963        editor.transpose(&Default::default(), window, cx);
 5964        assert_eq!(editor.text(cx), "bca");
 5965        assert_eq!(
 5966            editor.selections.ranges(&editor.display_snapshot(cx)),
 5967            [3..3]
 5968        );
 5969
 5970        editor.transpose(&Default::default(), window, cx);
 5971        assert_eq!(editor.text(cx), "bac");
 5972        assert_eq!(
 5973            editor.selections.ranges(&editor.display_snapshot(cx)),
 5974            [3..3]
 5975        );
 5976
 5977        editor
 5978    });
 5979
 5980    _ = cx.add_window(|window, cx| {
 5981        let mut editor = build_editor(MultiBuffer::build_simple("abc\nde", cx), window, cx);
 5982        editor.set_style(EditorStyle::default(), window, cx);
 5983        editor.change_selections(SelectionEffects::no_scroll(), window, cx, |s| {
 5984            s.select_ranges([3..3])
 5985        });
 5986        editor.transpose(&Default::default(), window, cx);
 5987        assert_eq!(editor.text(cx), "acb\nde");
 5988        assert_eq!(
 5989            editor.selections.ranges(&editor.display_snapshot(cx)),
 5990            [3..3]
 5991        );
 5992
 5993        editor.change_selections(SelectionEffects::no_scroll(), window, cx, |s| {
 5994            s.select_ranges([4..4])
 5995        });
 5996        editor.transpose(&Default::default(), window, cx);
 5997        assert_eq!(editor.text(cx), "acbd\ne");
 5998        assert_eq!(
 5999            editor.selections.ranges(&editor.display_snapshot(cx)),
 6000            [5..5]
 6001        );
 6002
 6003        editor.transpose(&Default::default(), window, cx);
 6004        assert_eq!(editor.text(cx), "acbde\n");
 6005        assert_eq!(
 6006            editor.selections.ranges(&editor.display_snapshot(cx)),
 6007            [6..6]
 6008        );
 6009
 6010        editor.transpose(&Default::default(), window, cx);
 6011        assert_eq!(editor.text(cx), "acbd\ne");
 6012        assert_eq!(
 6013            editor.selections.ranges(&editor.display_snapshot(cx)),
 6014            [6..6]
 6015        );
 6016
 6017        editor
 6018    });
 6019
 6020    _ = cx.add_window(|window, cx| {
 6021        let mut editor = build_editor(MultiBuffer::build_simple("abc\nde", cx), window, cx);
 6022        editor.set_style(EditorStyle::default(), window, cx);
 6023        editor.change_selections(SelectionEffects::no_scroll(), window, cx, |s| {
 6024            s.select_ranges([1..1, 2..2, 4..4])
 6025        });
 6026        editor.transpose(&Default::default(), window, cx);
 6027        assert_eq!(editor.text(cx), "bacd\ne");
 6028        assert_eq!(
 6029            editor.selections.ranges(&editor.display_snapshot(cx)),
 6030            [2..2, 3..3, 5..5]
 6031        );
 6032
 6033        editor.transpose(&Default::default(), window, cx);
 6034        assert_eq!(editor.text(cx), "bcade\n");
 6035        assert_eq!(
 6036            editor.selections.ranges(&editor.display_snapshot(cx)),
 6037            [3..3, 4..4, 6..6]
 6038        );
 6039
 6040        editor.transpose(&Default::default(), window, cx);
 6041        assert_eq!(editor.text(cx), "bcda\ne");
 6042        assert_eq!(
 6043            editor.selections.ranges(&editor.display_snapshot(cx)),
 6044            [4..4, 6..6]
 6045        );
 6046
 6047        editor.transpose(&Default::default(), window, cx);
 6048        assert_eq!(editor.text(cx), "bcade\n");
 6049        assert_eq!(
 6050            editor.selections.ranges(&editor.display_snapshot(cx)),
 6051            [4..4, 6..6]
 6052        );
 6053
 6054        editor.transpose(&Default::default(), window, cx);
 6055        assert_eq!(editor.text(cx), "bcaed\n");
 6056        assert_eq!(
 6057            editor.selections.ranges(&editor.display_snapshot(cx)),
 6058            [5..5, 6..6]
 6059        );
 6060
 6061        editor
 6062    });
 6063
 6064    _ = cx.add_window(|window, cx| {
 6065        let mut editor = build_editor(MultiBuffer::build_simple("🍐🏀✋", cx), window, cx);
 6066        editor.set_style(EditorStyle::default(), window, cx);
 6067        editor.change_selections(SelectionEffects::no_scroll(), window, cx, |s| {
 6068            s.select_ranges([4..4])
 6069        });
 6070        editor.transpose(&Default::default(), window, cx);
 6071        assert_eq!(editor.text(cx), "🏀🍐✋");
 6072        assert_eq!(
 6073            editor.selections.ranges(&editor.display_snapshot(cx)),
 6074            [8..8]
 6075        );
 6076
 6077        editor.transpose(&Default::default(), window, cx);
 6078        assert_eq!(editor.text(cx), "🏀✋🍐");
 6079        assert_eq!(
 6080            editor.selections.ranges(&editor.display_snapshot(cx)),
 6081            [11..11]
 6082        );
 6083
 6084        editor.transpose(&Default::default(), window, cx);
 6085        assert_eq!(editor.text(cx), "🏀🍐✋");
 6086        assert_eq!(
 6087            editor.selections.ranges(&editor.display_snapshot(cx)),
 6088            [11..11]
 6089        );
 6090
 6091        editor
 6092    });
 6093}
 6094
 6095#[gpui::test]
 6096async fn test_rewrap(cx: &mut TestAppContext) {
 6097    init_test(cx, |settings| {
 6098        settings.languages.0.extend([
 6099            (
 6100                "Markdown".into(),
 6101                LanguageSettingsContent {
 6102                    allow_rewrap: Some(language_settings::RewrapBehavior::Anywhere),
 6103                    preferred_line_length: Some(40),
 6104                    ..Default::default()
 6105                },
 6106            ),
 6107            (
 6108                "Plain Text".into(),
 6109                LanguageSettingsContent {
 6110                    allow_rewrap: Some(language_settings::RewrapBehavior::Anywhere),
 6111                    preferred_line_length: Some(40),
 6112                    ..Default::default()
 6113                },
 6114            ),
 6115            (
 6116                "C++".into(),
 6117                LanguageSettingsContent {
 6118                    allow_rewrap: Some(language_settings::RewrapBehavior::InComments),
 6119                    preferred_line_length: Some(40),
 6120                    ..Default::default()
 6121                },
 6122            ),
 6123            (
 6124                "Python".into(),
 6125                LanguageSettingsContent {
 6126                    allow_rewrap: Some(language_settings::RewrapBehavior::InComments),
 6127                    preferred_line_length: Some(40),
 6128                    ..Default::default()
 6129                },
 6130            ),
 6131            (
 6132                "Rust".into(),
 6133                LanguageSettingsContent {
 6134                    allow_rewrap: Some(language_settings::RewrapBehavior::InComments),
 6135                    preferred_line_length: Some(40),
 6136                    ..Default::default()
 6137                },
 6138            ),
 6139        ])
 6140    });
 6141
 6142    let mut cx = EditorTestContext::new(cx).await;
 6143
 6144    let cpp_language = Arc::new(Language::new(
 6145        LanguageConfig {
 6146            name: "C++".into(),
 6147            line_comments: vec!["// ".into()],
 6148            ..LanguageConfig::default()
 6149        },
 6150        None,
 6151    ));
 6152    let python_language = Arc::new(Language::new(
 6153        LanguageConfig {
 6154            name: "Python".into(),
 6155            line_comments: vec!["# ".into()],
 6156            ..LanguageConfig::default()
 6157        },
 6158        None,
 6159    ));
 6160    let markdown_language = Arc::new(Language::new(
 6161        LanguageConfig {
 6162            name: "Markdown".into(),
 6163            rewrap_prefixes: vec![
 6164                regex::Regex::new("\\d+\\.\\s+").unwrap(),
 6165                regex::Regex::new("[-*+]\\s+").unwrap(),
 6166            ],
 6167            ..LanguageConfig::default()
 6168        },
 6169        None,
 6170    ));
 6171    let rust_language = Arc::new(
 6172        Language::new(
 6173            LanguageConfig {
 6174                name: "Rust".into(),
 6175                line_comments: vec!["// ".into(), "/// ".into()],
 6176                ..LanguageConfig::default()
 6177            },
 6178            Some(tree_sitter_rust::LANGUAGE.into()),
 6179        )
 6180        .with_override_query("[(line_comment)(block_comment)] @comment.inclusive")
 6181        .unwrap(),
 6182    );
 6183
 6184    let plaintext_language = Arc::new(Language::new(
 6185        LanguageConfig {
 6186            name: "Plain Text".into(),
 6187            ..LanguageConfig::default()
 6188        },
 6189        None,
 6190    ));
 6191
 6192    // Test basic rewrapping of a long line with a cursor
 6193    assert_rewrap(
 6194        indoc! {"
 6195            // ˇThis is a long comment that needs to be wrapped.
 6196        "},
 6197        indoc! {"
 6198            // ˇThis is a long comment that needs to
 6199            // be wrapped.
 6200        "},
 6201        cpp_language.clone(),
 6202        &mut cx,
 6203    );
 6204
 6205    // Test rewrapping a full selection
 6206    assert_rewrap(
 6207        indoc! {"
 6208            «// This selected long comment needs to be wrapped.ˇ»"
 6209        },
 6210        indoc! {"
 6211            «// This selected long comment needs to
 6212            // be wrapped.ˇ»"
 6213        },
 6214        cpp_language.clone(),
 6215        &mut cx,
 6216    );
 6217
 6218    // Test multiple cursors on different lines within the same paragraph are preserved after rewrapping
 6219    assert_rewrap(
 6220        indoc! {"
 6221            // ˇThis is the first line.
 6222            // Thisˇ is the second line.
 6223            // This is the thirdˇ line, all part of one paragraph.
 6224         "},
 6225        indoc! {"
 6226            // ˇThis is the first line. Thisˇ is the
 6227            // second line. This is the thirdˇ line,
 6228            // all part of one paragraph.
 6229         "},
 6230        cpp_language.clone(),
 6231        &mut cx,
 6232    );
 6233
 6234    // Test multiple cursors in different paragraphs trigger separate rewraps
 6235    assert_rewrap(
 6236        indoc! {"
 6237            // ˇThis is the first paragraph, first line.
 6238            // ˇThis is the first paragraph, second line.
 6239
 6240            // ˇThis is the second paragraph, first line.
 6241            // ˇThis is the second paragraph, second line.
 6242        "},
 6243        indoc! {"
 6244            // ˇThis is the first paragraph, first
 6245            // line. ˇThis is the first paragraph,
 6246            // second line.
 6247
 6248            // ˇThis is the second paragraph, first
 6249            // line. ˇThis is the second paragraph,
 6250            // second line.
 6251        "},
 6252        cpp_language.clone(),
 6253        &mut cx,
 6254    );
 6255
 6256    // Test that change in comment prefix (e.g., `//` to `///`) trigger seperate rewraps
 6257    assert_rewrap(
 6258        indoc! {"
 6259            «// A regular long long comment to be wrapped.
 6260            /// A documentation long comment to be wrapped.ˇ»
 6261          "},
 6262        indoc! {"
 6263            «// A regular long long comment to be
 6264            // wrapped.
 6265            /// A documentation long comment to be
 6266            /// wrapped.ˇ»
 6267          "},
 6268        rust_language.clone(),
 6269        &mut cx,
 6270    );
 6271
 6272    // Test that change in indentation level trigger seperate rewraps
 6273    assert_rewrap(
 6274        indoc! {"
 6275            fn foo() {
 6276                «// This is a long comment at the base indent.
 6277                    // This is a long comment at the next indent.ˇ»
 6278            }
 6279        "},
 6280        indoc! {"
 6281            fn foo() {
 6282                «// This is a long comment at the
 6283                // base indent.
 6284                    // This is a long comment at the
 6285                    // next indent.ˇ»
 6286            }
 6287        "},
 6288        rust_language.clone(),
 6289        &mut cx,
 6290    );
 6291
 6292    // Test that different comment prefix characters (e.g., '#') are handled correctly
 6293    assert_rewrap(
 6294        indoc! {"
 6295            # ˇThis is a long comment using a pound sign.
 6296        "},
 6297        indoc! {"
 6298            # ˇThis is a long comment using a pound
 6299            # sign.
 6300        "},
 6301        python_language,
 6302        &mut cx,
 6303    );
 6304
 6305    // Test rewrapping only affects comments, not code even when selected
 6306    assert_rewrap(
 6307        indoc! {"
 6308            «/// This doc comment is long and should be wrapped.
 6309            fn my_func(a: u32, b: u32, c: u32, d: u32, e: u32, f: u32) {}ˇ»
 6310        "},
 6311        indoc! {"
 6312            «/// This doc comment is long and should
 6313            /// be wrapped.
 6314            fn my_func(a: u32, b: u32, c: u32, d: u32, e: u32, f: u32) {}ˇ»
 6315        "},
 6316        rust_language.clone(),
 6317        &mut cx,
 6318    );
 6319
 6320    // Test that rewrapping works in Markdown documents where `allow_rewrap` is `Anywhere`
 6321    assert_rewrap(
 6322        indoc! {"
 6323            # Header
 6324
 6325            A long long long line of markdown text to wrap.ˇ
 6326         "},
 6327        indoc! {"
 6328            # Header
 6329
 6330            A long long long line of markdown text
 6331            to wrap.ˇ
 6332         "},
 6333        markdown_language.clone(),
 6334        &mut cx,
 6335    );
 6336
 6337    // Test that rewrapping boundary works and preserves relative indent for Markdown documents
 6338    assert_rewrap(
 6339        indoc! {"
 6340            «1. This is a numbered list item that is very long and needs to be wrapped properly.
 6341            2. This is a numbered list item that is very long and needs to be wrapped properly.
 6342            - This is an unordered list item that is also very long and should not merge with the numbered item.ˇ»
 6343        "},
 6344        indoc! {"
 6345            «1. This is a numbered list item that is
 6346               very long and needs to be wrapped
 6347               properly.
 6348            2. This is a numbered list item that is
 6349               very long and needs to be wrapped
 6350               properly.
 6351            - This is an unordered list item that is
 6352              also very long and should not merge
 6353              with the numbered item.ˇ»
 6354        "},
 6355        markdown_language.clone(),
 6356        &mut cx,
 6357    );
 6358
 6359    // Test that rewrapping add indents for rewrapping boundary if not exists already.
 6360    assert_rewrap(
 6361        indoc! {"
 6362            «1. This is a numbered list item that is
 6363            very long and needs to be wrapped
 6364            properly.
 6365            2. This is a numbered list item that is
 6366            very long and needs to be wrapped
 6367            properly.
 6368            - This is an unordered list item that is
 6369            also very long and should not merge with
 6370            the numbered item.ˇ»
 6371        "},
 6372        indoc! {"
 6373            «1. This is a numbered list item that is
 6374               very long and needs to be wrapped
 6375               properly.
 6376            2. This is a numbered list item that is
 6377               very long and needs to be wrapped
 6378               properly.
 6379            - This is an unordered list item that is
 6380              also very long and should not merge
 6381              with the numbered item.ˇ»
 6382        "},
 6383        markdown_language.clone(),
 6384        &mut cx,
 6385    );
 6386
 6387    // Test that rewrapping maintain indents even when they already exists.
 6388    assert_rewrap(
 6389        indoc! {"
 6390            «1. This is a numbered list
 6391               item that is very long and needs to be wrapped properly.
 6392            2. This is a numbered list
 6393               item that is very long and needs to be wrapped properly.
 6394            - This is an unordered list item that is also very long and
 6395              should not merge with the numbered item.ˇ»
 6396        "},
 6397        indoc! {"
 6398            «1. This is a numbered list item that is
 6399               very long and needs to be wrapped
 6400               properly.
 6401            2. This is a numbered list item that is
 6402               very long and needs to be wrapped
 6403               properly.
 6404            - This is an unordered list item that is
 6405              also very long and should not merge
 6406              with the numbered item.ˇ»
 6407        "},
 6408        markdown_language,
 6409        &mut cx,
 6410    );
 6411
 6412    // Test that rewrapping works in plain text where `allow_rewrap` is `Anywhere`
 6413    assert_rewrap(
 6414        indoc! {"
 6415            ˇThis is a very long line of plain text that will be wrapped.
 6416        "},
 6417        indoc! {"
 6418            ˇThis is a very long line of plain text
 6419            that will be wrapped.
 6420        "},
 6421        plaintext_language.clone(),
 6422        &mut cx,
 6423    );
 6424
 6425    // Test that non-commented code acts as a paragraph boundary within a selection
 6426    assert_rewrap(
 6427        indoc! {"
 6428               «// This is the first long comment block to be wrapped.
 6429               fn my_func(a: u32);
 6430               // This is the second long comment block to be wrapped.ˇ»
 6431           "},
 6432        indoc! {"
 6433               «// This is the first long comment block
 6434               // to be wrapped.
 6435               fn my_func(a: u32);
 6436               // This is the second long comment block
 6437               // to be wrapped.ˇ»
 6438           "},
 6439        rust_language,
 6440        &mut cx,
 6441    );
 6442
 6443    // Test rewrapping multiple selections, including ones with blank lines or tabs
 6444    assert_rewrap(
 6445        indoc! {"
 6446            «ˇThis is a very long line that will be wrapped.
 6447
 6448            This is another paragraph in the same selection.»
 6449
 6450            «\tThis is a very long indented line that will be wrapped.ˇ»
 6451         "},
 6452        indoc! {"
 6453            «ˇThis is a very long line that will be
 6454            wrapped.
 6455
 6456            This is another paragraph in the same
 6457            selection.»
 6458
 6459            «\tThis is a very long indented line
 6460            \tthat will be wrapped.ˇ»
 6461         "},
 6462        plaintext_language,
 6463        &mut cx,
 6464    );
 6465
 6466    // Test that an empty comment line acts as a paragraph boundary
 6467    assert_rewrap(
 6468        indoc! {"
 6469            // ˇThis is a long comment that will be wrapped.
 6470            //
 6471            // And this is another long comment that will also be wrapped.ˇ
 6472         "},
 6473        indoc! {"
 6474            // ˇThis is a long comment that will be
 6475            // wrapped.
 6476            //
 6477            // And this is another long comment that
 6478            // will also be wrapped.ˇ
 6479         "},
 6480        cpp_language,
 6481        &mut cx,
 6482    );
 6483
 6484    #[track_caller]
 6485    fn assert_rewrap(
 6486        unwrapped_text: &str,
 6487        wrapped_text: &str,
 6488        language: Arc<Language>,
 6489        cx: &mut EditorTestContext,
 6490    ) {
 6491        cx.update_buffer(|buffer, cx| buffer.set_language(Some(language), cx));
 6492        cx.set_state(unwrapped_text);
 6493        cx.update_editor(|e, window, cx| e.rewrap(&Rewrap, window, cx));
 6494        cx.assert_editor_state(wrapped_text);
 6495    }
 6496}
 6497
 6498#[gpui::test]
 6499async fn test_rewrap_block_comments(cx: &mut TestAppContext) {
 6500    init_test(cx, |settings| {
 6501        settings.languages.0.extend([(
 6502            "Rust".into(),
 6503            LanguageSettingsContent {
 6504                allow_rewrap: Some(language_settings::RewrapBehavior::InComments),
 6505                preferred_line_length: Some(40),
 6506                ..Default::default()
 6507            },
 6508        )])
 6509    });
 6510
 6511    let mut cx = EditorTestContext::new(cx).await;
 6512
 6513    let rust_lang = Arc::new(
 6514        Language::new(
 6515            LanguageConfig {
 6516                name: "Rust".into(),
 6517                line_comments: vec!["// ".into()],
 6518                block_comment: Some(BlockCommentConfig {
 6519                    start: "/*".into(),
 6520                    end: "*/".into(),
 6521                    prefix: "* ".into(),
 6522                    tab_size: 1,
 6523                }),
 6524                documentation_comment: Some(BlockCommentConfig {
 6525                    start: "/**".into(),
 6526                    end: "*/".into(),
 6527                    prefix: "* ".into(),
 6528                    tab_size: 1,
 6529                }),
 6530
 6531                ..LanguageConfig::default()
 6532            },
 6533            Some(tree_sitter_rust::LANGUAGE.into()),
 6534        )
 6535        .with_override_query("[(line_comment) (block_comment)] @comment.inclusive")
 6536        .unwrap(),
 6537    );
 6538
 6539    // regular block comment
 6540    assert_rewrap(
 6541        indoc! {"
 6542            /*
 6543             *ˇ Lorem ipsum dolor sit amet, consectetur adipiscing elit.
 6544             */
 6545            /*ˇ Lorem ipsum dolor sit amet, consectetur adipiscing elit. */
 6546        "},
 6547        indoc! {"
 6548            /*
 6549             *ˇ Lorem ipsum dolor sit amet,
 6550             * consectetur adipiscing elit.
 6551             */
 6552            /*
 6553             *ˇ Lorem ipsum dolor sit amet,
 6554             * consectetur adipiscing elit.
 6555             */
 6556        "},
 6557        rust_lang.clone(),
 6558        &mut cx,
 6559    );
 6560
 6561    // indent is respected
 6562    assert_rewrap(
 6563        indoc! {"
 6564            {}
 6565                /*ˇ Lorem ipsum dolor sit amet, consectetur adipiscing elit. */
 6566        "},
 6567        indoc! {"
 6568            {}
 6569                /*
 6570                 *ˇ Lorem ipsum dolor sit amet,
 6571                 * consectetur adipiscing elit.
 6572                 */
 6573        "},
 6574        rust_lang.clone(),
 6575        &mut cx,
 6576    );
 6577
 6578    // short block comments with inline delimiters
 6579    assert_rewrap(
 6580        indoc! {"
 6581            /*ˇ Lorem ipsum dolor sit amet, consectetur adipiscing elit. */
 6582            /*ˇ Lorem ipsum dolor sit amet, consectetur adipiscing elit.
 6583             */
 6584            /*
 6585             *ˇ Lorem ipsum dolor sit amet, consectetur adipiscing elit. */
 6586        "},
 6587        indoc! {"
 6588            /*
 6589             *ˇ Lorem ipsum dolor sit amet,
 6590             * consectetur adipiscing elit.
 6591             */
 6592            /*
 6593             *ˇ Lorem ipsum dolor sit amet,
 6594             * consectetur adipiscing elit.
 6595             */
 6596            /*
 6597             *ˇ Lorem ipsum dolor sit amet,
 6598             * consectetur adipiscing elit.
 6599             */
 6600        "},
 6601        rust_lang.clone(),
 6602        &mut cx,
 6603    );
 6604
 6605    // multiline block comment with inline start/end delimiters
 6606    assert_rewrap(
 6607        indoc! {"
 6608            /*ˇ Lorem ipsum dolor sit amet,
 6609             * consectetur adipiscing elit. */
 6610        "},
 6611        indoc! {"
 6612            /*
 6613             *ˇ Lorem ipsum dolor sit amet,
 6614             * consectetur adipiscing elit.
 6615             */
 6616        "},
 6617        rust_lang.clone(),
 6618        &mut cx,
 6619    );
 6620
 6621    // block comment rewrap still respects paragraph bounds
 6622    assert_rewrap(
 6623        indoc! {"
 6624            /*
 6625             *ˇ Lorem ipsum dolor sit amet, consectetur adipiscing elit.
 6626             *
 6627             * Lorem ipsum dolor sit amet, consectetur adipiscing elit.
 6628             */
 6629        "},
 6630        indoc! {"
 6631            /*
 6632             *ˇ Lorem ipsum dolor sit amet,
 6633             * consectetur adipiscing elit.
 6634             *
 6635             * Lorem ipsum dolor sit amet, consectetur adipiscing elit.
 6636             */
 6637        "},
 6638        rust_lang.clone(),
 6639        &mut cx,
 6640    );
 6641
 6642    // documentation comments
 6643    assert_rewrap(
 6644        indoc! {"
 6645            /**ˇ Lorem ipsum dolor sit amet, consectetur adipiscing elit. */
 6646            /**
 6647             *ˇ Lorem ipsum dolor sit amet, consectetur adipiscing elit.
 6648             */
 6649        "},
 6650        indoc! {"
 6651            /**
 6652             *ˇ Lorem ipsum dolor sit amet,
 6653             * consectetur adipiscing elit.
 6654             */
 6655            /**
 6656             *ˇ Lorem ipsum dolor sit amet,
 6657             * consectetur adipiscing elit.
 6658             */
 6659        "},
 6660        rust_lang.clone(),
 6661        &mut cx,
 6662    );
 6663
 6664    // different, adjacent comments
 6665    assert_rewrap(
 6666        indoc! {"
 6667            /**
 6668             *ˇ Lorem ipsum dolor sit amet, consectetur adipiscing elit.
 6669             */
 6670            /*ˇ Lorem ipsum dolor sit amet, consectetur adipiscing elit. */
 6671            //ˇ Lorem ipsum dolor sit amet, consectetur adipiscing elit.
 6672        "},
 6673        indoc! {"
 6674            /**
 6675             *ˇ Lorem ipsum dolor sit amet,
 6676             * consectetur adipiscing elit.
 6677             */
 6678            /*
 6679             *ˇ Lorem ipsum dolor sit amet,
 6680             * consectetur adipiscing elit.
 6681             */
 6682            //ˇ Lorem ipsum dolor sit amet,
 6683            // consectetur adipiscing elit.
 6684        "},
 6685        rust_lang.clone(),
 6686        &mut cx,
 6687    );
 6688
 6689    // selection w/ single short block comment
 6690    assert_rewrap(
 6691        indoc! {"
 6692            «/* Lorem ipsum dolor sit amet, consectetur adipiscing elit. */ˇ»
 6693        "},
 6694        indoc! {"
 6695            «/*
 6696             * Lorem ipsum dolor sit amet,
 6697             * consectetur adipiscing elit.
 6698             */ˇ»
 6699        "},
 6700        rust_lang.clone(),
 6701        &mut cx,
 6702    );
 6703
 6704    // rewrapping a single comment w/ abutting comments
 6705    assert_rewrap(
 6706        indoc! {"
 6707            /* ˇLorem ipsum dolor sit amet, consectetur adipiscing elit. */
 6708            /* Lorem ipsum dolor sit amet, consectetur adipiscing elit. */
 6709        "},
 6710        indoc! {"
 6711            /*
 6712             * ˇLorem ipsum dolor sit amet,
 6713             * consectetur adipiscing elit.
 6714             */
 6715            /* Lorem ipsum dolor sit amet, consectetur adipiscing elit. */
 6716        "},
 6717        rust_lang.clone(),
 6718        &mut cx,
 6719    );
 6720
 6721    // selection w/ non-abutting short block comments
 6722    assert_rewrap(
 6723        indoc! {"
 6724            «/* Lorem ipsum dolor sit amet, consectetur adipiscing elit. */
 6725
 6726            /* Lorem ipsum dolor sit amet, consectetur adipiscing elit. */ˇ»
 6727        "},
 6728        indoc! {"
 6729            «/*
 6730             * Lorem ipsum dolor sit amet,
 6731             * consectetur adipiscing elit.
 6732             */
 6733
 6734            /*
 6735             * Lorem ipsum dolor sit amet,
 6736             * consectetur adipiscing elit.
 6737             */ˇ»
 6738        "},
 6739        rust_lang.clone(),
 6740        &mut cx,
 6741    );
 6742
 6743    // selection of multiline block comments
 6744    assert_rewrap(
 6745        indoc! {"
 6746            «/* Lorem ipsum dolor sit amet,
 6747             * consectetur adipiscing elit. */ˇ»
 6748        "},
 6749        indoc! {"
 6750            «/*
 6751             * Lorem ipsum dolor sit amet,
 6752             * consectetur adipiscing elit.
 6753             */ˇ»
 6754        "},
 6755        rust_lang.clone(),
 6756        &mut cx,
 6757    );
 6758
 6759    // partial selection of multiline block comments
 6760    assert_rewrap(
 6761        indoc! {"
 6762            «/* Lorem ipsum dolor sit amet,ˇ»
 6763             * consectetur adipiscing elit. */
 6764            /* Lorem ipsum dolor sit amet,
 6765             «* consectetur adipiscing elit. */ˇ»
 6766        "},
 6767        indoc! {"
 6768            «/*
 6769             * Lorem ipsum dolor sit amet,ˇ»
 6770             * consectetur adipiscing elit. */
 6771            /* Lorem ipsum dolor sit amet,
 6772             «* consectetur adipiscing elit.
 6773             */ˇ»
 6774        "},
 6775        rust_lang.clone(),
 6776        &mut cx,
 6777    );
 6778
 6779    // selection w/ abutting short block comments
 6780    // TODO: should not be combined; should rewrap as 2 comments
 6781    assert_rewrap(
 6782        indoc! {"
 6783            «/* Lorem ipsum dolor sit amet, consectetur adipiscing elit. */
 6784            /* Lorem ipsum dolor sit amet, consectetur adipiscing elit. */ˇ»
 6785        "},
 6786        // desired behavior:
 6787        // indoc! {"
 6788        //     «/*
 6789        //      * Lorem ipsum dolor sit amet,
 6790        //      * consectetur adipiscing elit.
 6791        //      */
 6792        //     /*
 6793        //      * Lorem ipsum dolor sit amet,
 6794        //      * consectetur adipiscing elit.
 6795        //      */ˇ»
 6796        // "},
 6797        // actual behaviour:
 6798        indoc! {"
 6799            «/*
 6800             * Lorem ipsum dolor sit amet,
 6801             * consectetur adipiscing elit. Lorem
 6802             * ipsum dolor sit amet, consectetur
 6803             * adipiscing elit.
 6804             */ˇ»
 6805        "},
 6806        rust_lang.clone(),
 6807        &mut cx,
 6808    );
 6809
 6810    // TODO: same as above, but with delimiters on separate line
 6811    // assert_rewrap(
 6812    //     indoc! {"
 6813    //         «/* Lorem ipsum dolor sit amet, consectetur adipiscing elit.
 6814    //          */
 6815    //         /*
 6816    //          * Lorem ipsum dolor sit amet, consectetur adipiscing elit. */ˇ»
 6817    //     "},
 6818    //     // desired:
 6819    //     // indoc! {"
 6820    //     //     «/*
 6821    //     //      * Lorem ipsum dolor sit amet,
 6822    //     //      * consectetur adipiscing elit.
 6823    //     //      */
 6824    //     //     /*
 6825    //     //      * Lorem ipsum dolor sit amet,
 6826    //     //      * consectetur adipiscing elit.
 6827    //     //      */ˇ»
 6828    //     // "},
 6829    //     // actual: (but with trailing w/s on the empty lines)
 6830    //     indoc! {"
 6831    //         «/*
 6832    //          * Lorem ipsum dolor sit amet,
 6833    //          * consectetur adipiscing elit.
 6834    //          *
 6835    //          */
 6836    //         /*
 6837    //          *
 6838    //          * Lorem ipsum dolor sit amet,
 6839    //          * consectetur adipiscing elit.
 6840    //          */ˇ»
 6841    //     "},
 6842    //     rust_lang.clone(),
 6843    //     &mut cx,
 6844    // );
 6845
 6846    // TODO these are unhandled edge cases; not correct, just documenting known issues
 6847    assert_rewrap(
 6848        indoc! {"
 6849            /*
 6850             //ˇ Lorem ipsum dolor sit amet, consectetur adipiscing elit.
 6851             */
 6852            /*
 6853             //ˇ Lorem ipsum dolor sit amet, consectetur adipiscing elit. */
 6854            /*ˇ Lorem ipsum dolor sit amet */ /* consectetur adipiscing elit. */
 6855        "},
 6856        // desired:
 6857        // indoc! {"
 6858        //     /*
 6859        //      *ˇ Lorem ipsum dolor sit amet,
 6860        //      * consectetur adipiscing elit.
 6861        //      */
 6862        //     /*
 6863        //      *ˇ Lorem ipsum dolor sit amet,
 6864        //      * consectetur adipiscing elit.
 6865        //      */
 6866        //     /*
 6867        //      *ˇ Lorem ipsum dolor sit amet
 6868        //      */ /* consectetur adipiscing elit. */
 6869        // "},
 6870        // actual:
 6871        indoc! {"
 6872            /*
 6873             //ˇ Lorem ipsum dolor sit amet,
 6874             // consectetur adipiscing elit.
 6875             */
 6876            /*
 6877             * //ˇ Lorem ipsum dolor sit amet,
 6878             * consectetur adipiscing elit.
 6879             */
 6880            /*
 6881             *ˇ Lorem ipsum dolor sit amet */ /*
 6882             * consectetur adipiscing elit.
 6883             */
 6884        "},
 6885        rust_lang,
 6886        &mut cx,
 6887    );
 6888
 6889    #[track_caller]
 6890    fn assert_rewrap(
 6891        unwrapped_text: &str,
 6892        wrapped_text: &str,
 6893        language: Arc<Language>,
 6894        cx: &mut EditorTestContext,
 6895    ) {
 6896        cx.update_buffer(|buffer, cx| buffer.set_language(Some(language), cx));
 6897        cx.set_state(unwrapped_text);
 6898        cx.update_editor(|e, window, cx| e.rewrap(&Rewrap, window, cx));
 6899        cx.assert_editor_state(wrapped_text);
 6900    }
 6901}
 6902
 6903#[gpui::test]
 6904async fn test_hard_wrap(cx: &mut TestAppContext) {
 6905    init_test(cx, |_| {});
 6906    let mut cx = EditorTestContext::new(cx).await;
 6907
 6908    cx.update_buffer(|buffer, cx| buffer.set_language(Some(git_commit_lang()), cx));
 6909    cx.update_editor(|editor, _, cx| {
 6910        editor.set_hard_wrap(Some(14), cx);
 6911    });
 6912
 6913    cx.set_state(indoc!(
 6914        "
 6915        one two three ˇ
 6916        "
 6917    ));
 6918    cx.simulate_input("four");
 6919    cx.run_until_parked();
 6920
 6921    cx.assert_editor_state(indoc!(
 6922        "
 6923        one two three
 6924        fourˇ
 6925        "
 6926    ));
 6927
 6928    cx.update_editor(|editor, window, cx| {
 6929        editor.newline(&Default::default(), window, cx);
 6930    });
 6931    cx.run_until_parked();
 6932    cx.assert_editor_state(indoc!(
 6933        "
 6934        one two three
 6935        four
 6936        ˇ
 6937        "
 6938    ));
 6939
 6940    cx.simulate_input("five");
 6941    cx.run_until_parked();
 6942    cx.assert_editor_state(indoc!(
 6943        "
 6944        one two three
 6945        four
 6946        fiveˇ
 6947        "
 6948    ));
 6949
 6950    cx.update_editor(|editor, window, cx| {
 6951        editor.newline(&Default::default(), window, cx);
 6952    });
 6953    cx.run_until_parked();
 6954    cx.simulate_input("# ");
 6955    cx.run_until_parked();
 6956    cx.assert_editor_state(indoc!(
 6957        "
 6958        one two three
 6959        four
 6960        five
 6961        # ˇ
 6962        "
 6963    ));
 6964
 6965    cx.update_editor(|editor, window, cx| {
 6966        editor.newline(&Default::default(), window, cx);
 6967    });
 6968    cx.run_until_parked();
 6969    cx.assert_editor_state(indoc!(
 6970        "
 6971        one two three
 6972        four
 6973        five
 6974        #\x20
 6975 6976        "
 6977    ));
 6978
 6979    cx.simulate_input(" 6");
 6980    cx.run_until_parked();
 6981    cx.assert_editor_state(indoc!(
 6982        "
 6983        one two three
 6984        four
 6985        five
 6986        #
 6987        # 6ˇ
 6988        "
 6989    ));
 6990}
 6991
 6992#[gpui::test]
 6993async fn test_cut_line_ends(cx: &mut TestAppContext) {
 6994    init_test(cx, |_| {});
 6995
 6996    let mut cx = EditorTestContext::new(cx).await;
 6997
 6998    cx.set_state(indoc! {"The quick brownˇ"});
 6999    cx.update_editor(|e, window, cx| e.cut_to_end_of_line(&CutToEndOfLine::default(), window, cx));
 7000    cx.assert_editor_state(indoc! {"The quick brownˇ"});
 7001
 7002    cx.set_state(indoc! {"The emacs foxˇ"});
 7003    cx.update_editor(|e, window, cx| e.kill_ring_cut(&KillRingCut, window, cx));
 7004    cx.assert_editor_state(indoc! {"The emacs foxˇ"});
 7005
 7006    cx.set_state(indoc! {"
 7007        The quick« brownˇ»
 7008        fox jumps overˇ
 7009        the lazy dog"});
 7010    cx.update_editor(|e, window, cx| e.cut(&Cut, window, cx));
 7011    cx.assert_editor_state(indoc! {"
 7012        The quickˇ
 7013        ˇthe lazy dog"});
 7014
 7015    cx.set_state(indoc! {"
 7016        The quick« brownˇ»
 7017        fox jumps overˇ
 7018        the lazy dog"});
 7019    cx.update_editor(|e, window, cx| e.cut_to_end_of_line(&CutToEndOfLine::default(), window, cx));
 7020    cx.assert_editor_state(indoc! {"
 7021        The quickˇ
 7022        fox jumps overˇthe lazy dog"});
 7023
 7024    cx.set_state(indoc! {"
 7025        The quick« brownˇ»
 7026        fox jumps overˇ
 7027        the lazy dog"});
 7028    cx.update_editor(|e, window, cx| {
 7029        e.cut_to_end_of_line(
 7030            &CutToEndOfLine {
 7031                stop_at_newlines: true,
 7032            },
 7033            window,
 7034            cx,
 7035        )
 7036    });
 7037    cx.assert_editor_state(indoc! {"
 7038        The quickˇ
 7039        fox jumps overˇ
 7040        the lazy dog"});
 7041
 7042    cx.set_state(indoc! {"
 7043        The quick« brownˇ»
 7044        fox jumps overˇ
 7045        the lazy dog"});
 7046    cx.update_editor(|e, window, cx| e.kill_ring_cut(&KillRingCut, window, cx));
 7047    cx.assert_editor_state(indoc! {"
 7048        The quickˇ
 7049        fox jumps overˇthe lazy dog"});
 7050}
 7051
 7052#[gpui::test]
 7053async fn test_clipboard(cx: &mut TestAppContext) {
 7054    init_test(cx, |_| {});
 7055
 7056    let mut cx = EditorTestContext::new(cx).await;
 7057
 7058    cx.set_state("«one✅ ˇ»two «three ˇ»four «five ˇ»six ");
 7059    cx.update_editor(|e, window, cx| e.cut(&Cut, window, cx));
 7060    cx.assert_editor_state("ˇtwo ˇfour ˇsix ");
 7061
 7062    // Paste with three cursors. Each cursor pastes one slice of the clipboard text.
 7063    cx.set_state("two ˇfour ˇsix ˇ");
 7064    cx.update_editor(|e, window, cx| e.paste(&Paste, window, cx));
 7065    cx.assert_editor_state("two one✅ ˇfour three ˇsix five ˇ");
 7066
 7067    // Paste again but with only two cursors. Since the number of cursors doesn't
 7068    // match the number of slices in the clipboard, the entire clipboard text
 7069    // is pasted at each cursor.
 7070    cx.set_state("ˇtwo one✅ four three six five ˇ");
 7071    cx.update_editor(|e, window, cx| {
 7072        e.handle_input("( ", window, cx);
 7073        e.paste(&Paste, window, cx);
 7074        e.handle_input(") ", window, cx);
 7075    });
 7076    cx.assert_editor_state(
 7077        &([
 7078            "( one✅ ",
 7079            "three ",
 7080            "five ) ˇtwo one✅ four three six five ( one✅ ",
 7081            "three ",
 7082            "five ) ˇ",
 7083        ]
 7084        .join("\n")),
 7085    );
 7086
 7087    // Cut with three selections, one of which is full-line.
 7088    cx.set_state(indoc! {"
 7089        1«2ˇ»3
 7090        4ˇ567
 7091        «8ˇ»9"});
 7092    cx.update_editor(|e, window, cx| e.cut(&Cut, window, cx));
 7093    cx.assert_editor_state(indoc! {"
 7094        1ˇ3
 7095        ˇ9"});
 7096
 7097    // Paste with three selections, noticing how the copied selection that was full-line
 7098    // gets inserted before the second cursor.
 7099    cx.set_state(indoc! {"
 7100        1ˇ3
 7101 7102        «oˇ»ne"});
 7103    cx.update_editor(|e, window, cx| e.paste(&Paste, window, cx));
 7104    cx.assert_editor_state(indoc! {"
 7105        12ˇ3
 7106        4567
 7107 7108        8ˇne"});
 7109
 7110    // Copy with a single cursor only, which writes the whole line into the clipboard.
 7111    cx.set_state(indoc! {"
 7112        The quick brown
 7113        fox juˇmps over
 7114        the lazy dog"});
 7115    cx.update_editor(|e, window, cx| e.copy(&Copy, window, cx));
 7116    assert_eq!(
 7117        cx.read_from_clipboard()
 7118            .and_then(|item| item.text().as_deref().map(str::to_string)),
 7119        Some("fox jumps over\n".to_string())
 7120    );
 7121
 7122    // Paste with three selections, noticing how the copied full-line selection is inserted
 7123    // before the empty selections but replaces the selection that is non-empty.
 7124    cx.set_state(indoc! {"
 7125        Tˇhe quick brown
 7126        «foˇ»x jumps over
 7127        tˇhe lazy dog"});
 7128    cx.update_editor(|e, window, cx| e.paste(&Paste, window, cx));
 7129    cx.assert_editor_state(indoc! {"
 7130        fox jumps over
 7131        Tˇhe quick brown
 7132        fox jumps over
 7133        ˇx jumps over
 7134        fox jumps over
 7135        tˇhe lazy dog"});
 7136}
 7137
 7138#[gpui::test]
 7139async fn test_copy_trim(cx: &mut TestAppContext) {
 7140    init_test(cx, |_| {});
 7141
 7142    let mut cx = EditorTestContext::new(cx).await;
 7143    cx.set_state(
 7144        r#"            «for selection in selections.iter() {
 7145            let mut start = selection.start;
 7146            let mut end = selection.end;
 7147            let is_entire_line = selection.is_empty();
 7148            if is_entire_line {
 7149                start = Point::new(start.row, 0);ˇ»
 7150                end = cmp::min(max_point, Point::new(end.row + 1, 0));
 7151            }
 7152        "#,
 7153    );
 7154    cx.update_editor(|e, window, cx| e.copy(&Copy, window, cx));
 7155    assert_eq!(
 7156        cx.read_from_clipboard()
 7157            .and_then(|item| item.text().as_deref().map(str::to_string)),
 7158        Some(
 7159            "for selection in selections.iter() {
 7160            let mut start = selection.start;
 7161            let mut end = selection.end;
 7162            let is_entire_line = selection.is_empty();
 7163            if is_entire_line {
 7164                start = Point::new(start.row, 0);"
 7165                .to_string()
 7166        ),
 7167        "Regular copying preserves all indentation selected",
 7168    );
 7169    cx.update_editor(|e, window, cx| e.copy_and_trim(&CopyAndTrim, window, cx));
 7170    assert_eq!(
 7171        cx.read_from_clipboard()
 7172            .and_then(|item| item.text().as_deref().map(str::to_string)),
 7173        Some(
 7174            "for selection in selections.iter() {
 7175let mut start = selection.start;
 7176let mut end = selection.end;
 7177let is_entire_line = selection.is_empty();
 7178if is_entire_line {
 7179    start = Point::new(start.row, 0);"
 7180                .to_string()
 7181        ),
 7182        "Copying with stripping should strip all leading whitespaces"
 7183    );
 7184
 7185    cx.set_state(
 7186        r#"       «     for selection in selections.iter() {
 7187            let mut start = selection.start;
 7188            let mut end = selection.end;
 7189            let is_entire_line = selection.is_empty();
 7190            if is_entire_line {
 7191                start = Point::new(start.row, 0);ˇ»
 7192                end = cmp::min(max_point, Point::new(end.row + 1, 0));
 7193            }
 7194        "#,
 7195    );
 7196    cx.update_editor(|e, window, cx| e.copy(&Copy, window, cx));
 7197    assert_eq!(
 7198        cx.read_from_clipboard()
 7199            .and_then(|item| item.text().as_deref().map(str::to_string)),
 7200        Some(
 7201            "     for selection in selections.iter() {
 7202            let mut start = selection.start;
 7203            let mut end = selection.end;
 7204            let is_entire_line = selection.is_empty();
 7205            if is_entire_line {
 7206                start = Point::new(start.row, 0);"
 7207                .to_string()
 7208        ),
 7209        "Regular copying preserves all indentation selected",
 7210    );
 7211    cx.update_editor(|e, window, cx| e.copy_and_trim(&CopyAndTrim, window, cx));
 7212    assert_eq!(
 7213        cx.read_from_clipboard()
 7214            .and_then(|item| item.text().as_deref().map(str::to_string)),
 7215        Some(
 7216            "for selection in selections.iter() {
 7217let mut start = selection.start;
 7218let mut end = selection.end;
 7219let is_entire_line = selection.is_empty();
 7220if is_entire_line {
 7221    start = Point::new(start.row, 0);"
 7222                .to_string()
 7223        ),
 7224        "Copying with stripping should strip all leading whitespaces, even if some of it was selected"
 7225    );
 7226
 7227    cx.set_state(
 7228        r#"       «ˇ     for selection in selections.iter() {
 7229            let mut start = selection.start;
 7230            let mut end = selection.end;
 7231            let is_entire_line = selection.is_empty();
 7232            if is_entire_line {
 7233                start = Point::new(start.row, 0);»
 7234                end = cmp::min(max_point, Point::new(end.row + 1, 0));
 7235            }
 7236        "#,
 7237    );
 7238    cx.update_editor(|e, window, cx| e.copy(&Copy, window, cx));
 7239    assert_eq!(
 7240        cx.read_from_clipboard()
 7241            .and_then(|item| item.text().as_deref().map(str::to_string)),
 7242        Some(
 7243            "     for selection in selections.iter() {
 7244            let mut start = selection.start;
 7245            let mut end = selection.end;
 7246            let is_entire_line = selection.is_empty();
 7247            if is_entire_line {
 7248                start = Point::new(start.row, 0);"
 7249                .to_string()
 7250        ),
 7251        "Regular copying for reverse selection works the same",
 7252    );
 7253    cx.update_editor(|e, window, cx| e.copy_and_trim(&CopyAndTrim, window, cx));
 7254    assert_eq!(
 7255        cx.read_from_clipboard()
 7256            .and_then(|item| item.text().as_deref().map(str::to_string)),
 7257        Some(
 7258            "for selection in selections.iter() {
 7259let mut start = selection.start;
 7260let mut end = selection.end;
 7261let is_entire_line = selection.is_empty();
 7262if is_entire_line {
 7263    start = Point::new(start.row, 0);"
 7264                .to_string()
 7265        ),
 7266        "Copying with stripping for reverse selection works the same"
 7267    );
 7268
 7269    cx.set_state(
 7270        r#"            for selection «in selections.iter() {
 7271            let mut start = selection.start;
 7272            let mut end = selection.end;
 7273            let is_entire_line = selection.is_empty();
 7274            if is_entire_line {
 7275                start = Point::new(start.row, 0);ˇ»
 7276                end = cmp::min(max_point, Point::new(end.row + 1, 0));
 7277            }
 7278        "#,
 7279    );
 7280    cx.update_editor(|e, window, cx| e.copy(&Copy, window, cx));
 7281    assert_eq!(
 7282        cx.read_from_clipboard()
 7283            .and_then(|item| item.text().as_deref().map(str::to_string)),
 7284        Some(
 7285            "in selections.iter() {
 7286            let mut start = selection.start;
 7287            let mut end = selection.end;
 7288            let is_entire_line = selection.is_empty();
 7289            if is_entire_line {
 7290                start = Point::new(start.row, 0);"
 7291                .to_string()
 7292        ),
 7293        "When selecting past the indent, the copying works as usual",
 7294    );
 7295    cx.update_editor(|e, window, cx| e.copy_and_trim(&CopyAndTrim, window, cx));
 7296    assert_eq!(
 7297        cx.read_from_clipboard()
 7298            .and_then(|item| item.text().as_deref().map(str::to_string)),
 7299        Some(
 7300            "in selections.iter() {
 7301            let mut start = selection.start;
 7302            let mut end = selection.end;
 7303            let is_entire_line = selection.is_empty();
 7304            if is_entire_line {
 7305                start = Point::new(start.row, 0);"
 7306                .to_string()
 7307        ),
 7308        "When selecting past the indent, nothing is trimmed"
 7309    );
 7310
 7311    cx.set_state(
 7312        r#"            «for selection in selections.iter() {
 7313            let mut start = selection.start;
 7314
 7315            let mut end = selection.end;
 7316            let is_entire_line = selection.is_empty();
 7317            if is_entire_line {
 7318                start = Point::new(start.row, 0);
 7319ˇ»                end = cmp::min(max_point, Point::new(end.row + 1, 0));
 7320            }
 7321        "#,
 7322    );
 7323    cx.update_editor(|e, window, cx| e.copy_and_trim(&CopyAndTrim, window, cx));
 7324    assert_eq!(
 7325        cx.read_from_clipboard()
 7326            .and_then(|item| item.text().as_deref().map(str::to_string)),
 7327        Some(
 7328            "for selection in selections.iter() {
 7329let mut start = selection.start;
 7330
 7331let mut end = selection.end;
 7332let is_entire_line = selection.is_empty();
 7333if is_entire_line {
 7334    start = Point::new(start.row, 0);
 7335"
 7336            .to_string()
 7337        ),
 7338        "Copying with stripping should ignore empty lines"
 7339    );
 7340}
 7341
 7342#[gpui::test]
 7343async fn test_paste_multiline(cx: &mut TestAppContext) {
 7344    init_test(cx, |_| {});
 7345
 7346    let mut cx = EditorTestContext::new(cx).await;
 7347    cx.update_buffer(|buffer, cx| buffer.set_language(Some(rust_lang()), cx));
 7348
 7349    // Cut an indented block, without the leading whitespace.
 7350    cx.set_state(indoc! {"
 7351        const a: B = (
 7352            c(),
 7353            «d(
 7354                e,
 7355                f
 7356            )ˇ»
 7357        );
 7358    "});
 7359    cx.update_editor(|e, window, cx| e.cut(&Cut, window, cx));
 7360    cx.assert_editor_state(indoc! {"
 7361        const a: B = (
 7362            c(),
 7363            ˇ
 7364        );
 7365    "});
 7366
 7367    // Paste it at the same position.
 7368    cx.update_editor(|e, window, cx| e.paste(&Paste, window, cx));
 7369    cx.assert_editor_state(indoc! {"
 7370        const a: B = (
 7371            c(),
 7372            d(
 7373                e,
 7374                f
 7375 7376        );
 7377    "});
 7378
 7379    // Paste it at a line with a lower indent level.
 7380    cx.set_state(indoc! {"
 7381        ˇ
 7382        const a: B = (
 7383            c(),
 7384        );
 7385    "});
 7386    cx.update_editor(|e, window, cx| e.paste(&Paste, window, cx));
 7387    cx.assert_editor_state(indoc! {"
 7388        d(
 7389            e,
 7390            f
 7391 7392        const a: B = (
 7393            c(),
 7394        );
 7395    "});
 7396
 7397    // Cut an indented block, with the leading whitespace.
 7398    cx.set_state(indoc! {"
 7399        const a: B = (
 7400            c(),
 7401        «    d(
 7402                e,
 7403                f
 7404            )
 7405        ˇ»);
 7406    "});
 7407    cx.update_editor(|e, window, cx| e.cut(&Cut, window, cx));
 7408    cx.assert_editor_state(indoc! {"
 7409        const a: B = (
 7410            c(),
 7411        ˇ);
 7412    "});
 7413
 7414    // Paste it at the same position.
 7415    cx.update_editor(|e, window, cx| e.paste(&Paste, window, cx));
 7416    cx.assert_editor_state(indoc! {"
 7417        const a: B = (
 7418            c(),
 7419            d(
 7420                e,
 7421                f
 7422            )
 7423        ˇ);
 7424    "});
 7425
 7426    // Paste it at a line with a higher indent level.
 7427    cx.set_state(indoc! {"
 7428        const a: B = (
 7429            c(),
 7430            d(
 7431                e,
 7432 7433            )
 7434        );
 7435    "});
 7436    cx.update_editor(|e, window, cx| e.paste(&Paste, window, cx));
 7437    cx.assert_editor_state(indoc! {"
 7438        const a: B = (
 7439            c(),
 7440            d(
 7441                e,
 7442                f    d(
 7443                    e,
 7444                    f
 7445                )
 7446        ˇ
 7447            )
 7448        );
 7449    "});
 7450
 7451    // Copy an indented block, starting mid-line
 7452    cx.set_state(indoc! {"
 7453        const a: B = (
 7454            c(),
 7455            somethin«g(
 7456                e,
 7457                f
 7458            )ˇ»
 7459        );
 7460    "});
 7461    cx.update_editor(|e, window, cx| e.copy(&Copy, window, cx));
 7462
 7463    // Paste it on a line with a lower indent level
 7464    cx.update_editor(|e, window, cx| e.move_to_end(&Default::default(), window, cx));
 7465    cx.update_editor(|e, window, cx| e.paste(&Paste, window, cx));
 7466    cx.assert_editor_state(indoc! {"
 7467        const a: B = (
 7468            c(),
 7469            something(
 7470                e,
 7471                f
 7472            )
 7473        );
 7474        g(
 7475            e,
 7476            f
 7477"});
 7478}
 7479
 7480#[gpui::test]
 7481async fn test_paste_content_from_other_app(cx: &mut TestAppContext) {
 7482    init_test(cx, |_| {});
 7483
 7484    cx.write_to_clipboard(ClipboardItem::new_string(
 7485        "    d(\n        e\n    );\n".into(),
 7486    ));
 7487
 7488    let mut cx = EditorTestContext::new(cx).await;
 7489    cx.update_buffer(|buffer, cx| buffer.set_language(Some(rust_lang()), cx));
 7490
 7491    cx.set_state(indoc! {"
 7492        fn a() {
 7493            b();
 7494            if c() {
 7495                ˇ
 7496            }
 7497        }
 7498    "});
 7499
 7500    cx.update_editor(|e, window, cx| e.paste(&Paste, window, cx));
 7501    cx.assert_editor_state(indoc! {"
 7502        fn a() {
 7503            b();
 7504            if c() {
 7505                d(
 7506                    e
 7507                );
 7508        ˇ
 7509            }
 7510        }
 7511    "});
 7512
 7513    cx.set_state(indoc! {"
 7514        fn a() {
 7515            b();
 7516            ˇ
 7517        }
 7518    "});
 7519
 7520    cx.update_editor(|e, window, cx| e.paste(&Paste, window, cx));
 7521    cx.assert_editor_state(indoc! {"
 7522        fn a() {
 7523            b();
 7524            d(
 7525                e
 7526            );
 7527        ˇ
 7528        }
 7529    "});
 7530}
 7531
 7532#[gpui::test]
 7533fn test_select_all(cx: &mut TestAppContext) {
 7534    init_test(cx, |_| {});
 7535
 7536    let editor = cx.add_window(|window, cx| {
 7537        let buffer = MultiBuffer::build_simple("abc\nde\nfgh", cx);
 7538        build_editor(buffer, window, cx)
 7539    });
 7540    _ = editor.update(cx, |editor, window, cx| {
 7541        editor.select_all(&SelectAll, window, cx);
 7542        assert_eq!(
 7543            editor.selections.display_ranges(cx),
 7544            &[DisplayPoint::new(DisplayRow(0), 0)..DisplayPoint::new(DisplayRow(2), 3)]
 7545        );
 7546    });
 7547}
 7548
 7549#[gpui::test]
 7550fn test_select_line(cx: &mut TestAppContext) {
 7551    init_test(cx, |_| {});
 7552
 7553    let editor = cx.add_window(|window, cx| {
 7554        let buffer = MultiBuffer::build_simple(&sample_text(6, 5, 'a'), cx);
 7555        build_editor(buffer, window, cx)
 7556    });
 7557    _ = editor.update(cx, |editor, window, cx| {
 7558        editor.change_selections(SelectionEffects::no_scroll(), window, cx, |s| {
 7559            s.select_display_ranges([
 7560                DisplayPoint::new(DisplayRow(0), 0)..DisplayPoint::new(DisplayRow(0), 1),
 7561                DisplayPoint::new(DisplayRow(0), 2)..DisplayPoint::new(DisplayRow(0), 2),
 7562                DisplayPoint::new(DisplayRow(1), 0)..DisplayPoint::new(DisplayRow(1), 0),
 7563                DisplayPoint::new(DisplayRow(4), 2)..DisplayPoint::new(DisplayRow(4), 2),
 7564            ])
 7565        });
 7566        editor.select_line(&SelectLine, window, cx);
 7567        assert_eq!(
 7568            editor.selections.display_ranges(cx),
 7569            vec![
 7570                DisplayPoint::new(DisplayRow(0), 0)..DisplayPoint::new(DisplayRow(2), 0),
 7571                DisplayPoint::new(DisplayRow(4), 0)..DisplayPoint::new(DisplayRow(5), 0),
 7572            ]
 7573        );
 7574    });
 7575
 7576    _ = editor.update(cx, |editor, window, cx| {
 7577        editor.select_line(&SelectLine, window, cx);
 7578        assert_eq!(
 7579            editor.selections.display_ranges(cx),
 7580            vec![
 7581                DisplayPoint::new(DisplayRow(0), 0)..DisplayPoint::new(DisplayRow(3), 0),
 7582                DisplayPoint::new(DisplayRow(4), 0)..DisplayPoint::new(DisplayRow(5), 5),
 7583            ]
 7584        );
 7585    });
 7586
 7587    _ = editor.update(cx, |editor, window, cx| {
 7588        editor.select_line(&SelectLine, window, cx);
 7589        assert_eq!(
 7590            editor.selections.display_ranges(cx),
 7591            vec![DisplayPoint::new(DisplayRow(0), 0)..DisplayPoint::new(DisplayRow(5), 5)]
 7592        );
 7593    });
 7594}
 7595
 7596#[gpui::test]
 7597async fn test_split_selection_into_lines(cx: &mut TestAppContext) {
 7598    init_test(cx, |_| {});
 7599    let mut cx = EditorTestContext::new(cx).await;
 7600
 7601    #[track_caller]
 7602    fn test(cx: &mut EditorTestContext, initial_state: &'static str, expected_state: &'static str) {
 7603        cx.set_state(initial_state);
 7604        cx.update_editor(|e, window, cx| {
 7605            e.split_selection_into_lines(&Default::default(), window, cx)
 7606        });
 7607        cx.assert_editor_state(expected_state);
 7608    }
 7609
 7610    // Selection starts and ends at the middle of lines, left-to-right
 7611    test(
 7612        &mut cx,
 7613        "aa\nb«ˇb\ncc\ndd\ne»e\nff",
 7614        "aa\nbbˇ\nccˇ\nddˇ\neˇe\nff",
 7615    );
 7616    // Same thing, right-to-left
 7617    test(
 7618        &mut cx,
 7619        "aa\nb«b\ncc\ndd\neˇ»e\nff",
 7620        "aa\nbbˇ\nccˇ\nddˇ\neˇe\nff",
 7621    );
 7622
 7623    // Whole buffer, left-to-right, last line *doesn't* end with newline
 7624    test(
 7625        &mut cx,
 7626        "«ˇaa\nbb\ncc\ndd\nee\nff»",
 7627        "aaˇ\nbbˇ\nccˇ\nddˇ\neeˇ\nffˇ",
 7628    );
 7629    // Same thing, right-to-left
 7630    test(
 7631        &mut cx,
 7632        "«aa\nbb\ncc\ndd\nee\nffˇ»",
 7633        "aaˇ\nbbˇ\nccˇ\nddˇ\neeˇ\nffˇ",
 7634    );
 7635
 7636    // Whole buffer, left-to-right, last line ends with newline
 7637    test(
 7638        &mut cx,
 7639        "«ˇaa\nbb\ncc\ndd\nee\nff\n»",
 7640        "aaˇ\nbbˇ\nccˇ\nddˇ\neeˇ\nffˇ\n",
 7641    );
 7642    // Same thing, right-to-left
 7643    test(
 7644        &mut cx,
 7645        "«aa\nbb\ncc\ndd\nee\nff\nˇ»",
 7646        "aaˇ\nbbˇ\nccˇ\nddˇ\neeˇ\nffˇ\n",
 7647    );
 7648
 7649    // Starts at the end of a line, ends at the start of another
 7650    test(
 7651        &mut cx,
 7652        "aa\nbb«ˇ\ncc\ndd\nee\n»ff\n",
 7653        "aa\nbbˇ\nccˇ\nddˇ\neeˇ\nff\n",
 7654    );
 7655}
 7656
 7657#[gpui::test]
 7658async fn test_split_selection_into_lines_interacting_with_creases(cx: &mut TestAppContext) {
 7659    init_test(cx, |_| {});
 7660
 7661    let editor = cx.add_window(|window, cx| {
 7662        let buffer = MultiBuffer::build_simple(&sample_text(9, 5, 'a'), cx);
 7663        build_editor(buffer, window, cx)
 7664    });
 7665
 7666    // setup
 7667    _ = editor.update(cx, |editor, window, cx| {
 7668        editor.fold_creases(
 7669            vec![
 7670                Crease::simple(Point::new(0, 2)..Point::new(1, 2), FoldPlaceholder::test()),
 7671                Crease::simple(Point::new(2, 3)..Point::new(4, 1), FoldPlaceholder::test()),
 7672                Crease::simple(Point::new(7, 0)..Point::new(8, 4), FoldPlaceholder::test()),
 7673            ],
 7674            true,
 7675            window,
 7676            cx,
 7677        );
 7678        assert_eq!(
 7679            editor.display_text(cx),
 7680            "aa⋯bbb\nccc⋯eeee\nfffff\nggggg\n⋯i"
 7681        );
 7682    });
 7683
 7684    _ = editor.update(cx, |editor, window, cx| {
 7685        editor.change_selections(SelectionEffects::no_scroll(), window, cx, |s| {
 7686            s.select_display_ranges([
 7687                DisplayPoint::new(DisplayRow(0), 0)..DisplayPoint::new(DisplayRow(0), 1),
 7688                DisplayPoint::new(DisplayRow(0), 2)..DisplayPoint::new(DisplayRow(0), 2),
 7689                DisplayPoint::new(DisplayRow(1), 0)..DisplayPoint::new(DisplayRow(1), 0),
 7690                DisplayPoint::new(DisplayRow(4), 4)..DisplayPoint::new(DisplayRow(4), 4),
 7691            ])
 7692        });
 7693        editor.split_selection_into_lines(&Default::default(), window, cx);
 7694        assert_eq!(
 7695            editor.display_text(cx),
 7696            "aaaaa\nbbbbb\nccc⋯eeee\nfffff\nggggg\n⋯i"
 7697        );
 7698    });
 7699    EditorTestContext::for_editor(editor, cx)
 7700        .await
 7701        .assert_editor_state("aˇaˇaaa\nbbbbb\nˇccccc\nddddd\neeeee\nfffff\nggggg\nhhhhh\niiiiiˇ");
 7702
 7703    _ = editor.update(cx, |editor, window, cx| {
 7704        editor.change_selections(SelectionEffects::no_scroll(), window, cx, |s| {
 7705            s.select_display_ranges([
 7706                DisplayPoint::new(DisplayRow(5), 0)..DisplayPoint::new(DisplayRow(0), 1)
 7707            ])
 7708        });
 7709        editor.split_selection_into_lines(&Default::default(), window, cx);
 7710        assert_eq!(
 7711            editor.display_text(cx),
 7712            "aaaaa\nbbbbb\nccccc\nddddd\neeeee\nfffff\nggggg\nhhhhh\niiiii"
 7713        );
 7714        assert_eq!(
 7715            editor.selections.display_ranges(cx),
 7716            [
 7717                DisplayPoint::new(DisplayRow(0), 5)..DisplayPoint::new(DisplayRow(0), 5),
 7718                DisplayPoint::new(DisplayRow(1), 5)..DisplayPoint::new(DisplayRow(1), 5),
 7719                DisplayPoint::new(DisplayRow(2), 5)..DisplayPoint::new(DisplayRow(2), 5),
 7720                DisplayPoint::new(DisplayRow(3), 5)..DisplayPoint::new(DisplayRow(3), 5),
 7721                DisplayPoint::new(DisplayRow(4), 5)..DisplayPoint::new(DisplayRow(4), 5),
 7722                DisplayPoint::new(DisplayRow(5), 5)..DisplayPoint::new(DisplayRow(5), 5),
 7723                DisplayPoint::new(DisplayRow(6), 5)..DisplayPoint::new(DisplayRow(6), 5)
 7724            ]
 7725        );
 7726    });
 7727    EditorTestContext::for_editor(editor, cx)
 7728        .await
 7729        .assert_editor_state(
 7730            "aaaaaˇ\nbbbbbˇ\ncccccˇ\ndddddˇ\neeeeeˇ\nfffffˇ\ngggggˇ\nhhhhh\niiiii",
 7731        );
 7732}
 7733
 7734#[gpui::test]
 7735async fn test_add_selection_above_below(cx: &mut TestAppContext) {
 7736    init_test(cx, |_| {});
 7737
 7738    let mut cx = EditorTestContext::new(cx).await;
 7739
 7740    cx.set_state(indoc!(
 7741        r#"abc
 7742           defˇghi
 7743
 7744           jk
 7745           nlmo
 7746           "#
 7747    ));
 7748
 7749    cx.update_editor(|editor, window, cx| {
 7750        editor.add_selection_above(&Default::default(), window, cx);
 7751    });
 7752
 7753    cx.assert_editor_state(indoc!(
 7754        r#"abcˇ
 7755           defˇghi
 7756
 7757           jk
 7758           nlmo
 7759           "#
 7760    ));
 7761
 7762    cx.update_editor(|editor, window, cx| {
 7763        editor.add_selection_above(&Default::default(), window, cx);
 7764    });
 7765
 7766    cx.assert_editor_state(indoc!(
 7767        r#"abcˇ
 7768            defˇghi
 7769
 7770            jk
 7771            nlmo
 7772            "#
 7773    ));
 7774
 7775    cx.update_editor(|editor, window, cx| {
 7776        editor.add_selection_below(&Default::default(), window, cx);
 7777    });
 7778
 7779    cx.assert_editor_state(indoc!(
 7780        r#"abc
 7781           defˇghi
 7782
 7783           jk
 7784           nlmo
 7785           "#
 7786    ));
 7787
 7788    cx.update_editor(|editor, window, cx| {
 7789        editor.undo_selection(&Default::default(), window, cx);
 7790    });
 7791
 7792    cx.assert_editor_state(indoc!(
 7793        r#"abcˇ
 7794           defˇghi
 7795
 7796           jk
 7797           nlmo
 7798           "#
 7799    ));
 7800
 7801    cx.update_editor(|editor, window, cx| {
 7802        editor.redo_selection(&Default::default(), window, cx);
 7803    });
 7804
 7805    cx.assert_editor_state(indoc!(
 7806        r#"abc
 7807           defˇghi
 7808
 7809           jk
 7810           nlmo
 7811           "#
 7812    ));
 7813
 7814    cx.update_editor(|editor, window, cx| {
 7815        editor.add_selection_below(&Default::default(), window, cx);
 7816    });
 7817
 7818    cx.assert_editor_state(indoc!(
 7819        r#"abc
 7820           defˇghi
 7821           ˇ
 7822           jk
 7823           nlmo
 7824           "#
 7825    ));
 7826
 7827    cx.update_editor(|editor, window, cx| {
 7828        editor.add_selection_below(&Default::default(), window, cx);
 7829    });
 7830
 7831    cx.assert_editor_state(indoc!(
 7832        r#"abc
 7833           defˇghi
 7834           ˇ
 7835           jkˇ
 7836           nlmo
 7837           "#
 7838    ));
 7839
 7840    cx.update_editor(|editor, window, cx| {
 7841        editor.add_selection_below(&Default::default(), window, cx);
 7842    });
 7843
 7844    cx.assert_editor_state(indoc!(
 7845        r#"abc
 7846           defˇghi
 7847           ˇ
 7848           jkˇ
 7849           nlmˇo
 7850           "#
 7851    ));
 7852
 7853    cx.update_editor(|editor, window, cx| {
 7854        editor.add_selection_below(&Default::default(), window, cx);
 7855    });
 7856
 7857    cx.assert_editor_state(indoc!(
 7858        r#"abc
 7859           defˇghi
 7860           ˇ
 7861           jkˇ
 7862           nlmˇo
 7863           ˇ"#
 7864    ));
 7865
 7866    // change selections
 7867    cx.set_state(indoc!(
 7868        r#"abc
 7869           def«ˇg»hi
 7870
 7871           jk
 7872           nlmo
 7873           "#
 7874    ));
 7875
 7876    cx.update_editor(|editor, window, cx| {
 7877        editor.add_selection_below(&Default::default(), window, cx);
 7878    });
 7879
 7880    cx.assert_editor_state(indoc!(
 7881        r#"abc
 7882           def«ˇg»hi
 7883
 7884           jk
 7885           nlm«ˇo»
 7886           "#
 7887    ));
 7888
 7889    cx.update_editor(|editor, window, cx| {
 7890        editor.add_selection_below(&Default::default(), window, cx);
 7891    });
 7892
 7893    cx.assert_editor_state(indoc!(
 7894        r#"abc
 7895           def«ˇg»hi
 7896
 7897           jk
 7898           nlm«ˇo»
 7899           "#
 7900    ));
 7901
 7902    cx.update_editor(|editor, window, cx| {
 7903        editor.add_selection_above(&Default::default(), window, cx);
 7904    });
 7905
 7906    cx.assert_editor_state(indoc!(
 7907        r#"abc
 7908           def«ˇg»hi
 7909
 7910           jk
 7911           nlmo
 7912           "#
 7913    ));
 7914
 7915    cx.update_editor(|editor, window, cx| {
 7916        editor.add_selection_above(&Default::default(), window, cx);
 7917    });
 7918
 7919    cx.assert_editor_state(indoc!(
 7920        r#"abc
 7921           def«ˇg»hi
 7922
 7923           jk
 7924           nlmo
 7925           "#
 7926    ));
 7927
 7928    // Change selections again
 7929    cx.set_state(indoc!(
 7930        r#"a«bc
 7931           defgˇ»hi
 7932
 7933           jk
 7934           nlmo
 7935           "#
 7936    ));
 7937
 7938    cx.update_editor(|editor, window, cx| {
 7939        editor.add_selection_below(&Default::default(), window, cx);
 7940    });
 7941
 7942    cx.assert_editor_state(indoc!(
 7943        r#"a«bcˇ»
 7944           d«efgˇ»hi
 7945
 7946           j«kˇ»
 7947           nlmo
 7948           "#
 7949    ));
 7950
 7951    cx.update_editor(|editor, window, cx| {
 7952        editor.add_selection_below(&Default::default(), window, cx);
 7953    });
 7954    cx.assert_editor_state(indoc!(
 7955        r#"a«bcˇ»
 7956           d«efgˇ»hi
 7957
 7958           j«kˇ»
 7959           n«lmoˇ»
 7960           "#
 7961    ));
 7962    cx.update_editor(|editor, window, cx| {
 7963        editor.add_selection_above(&Default::default(), window, cx);
 7964    });
 7965
 7966    cx.assert_editor_state(indoc!(
 7967        r#"a«bcˇ»
 7968           d«efgˇ»hi
 7969
 7970           j«kˇ»
 7971           nlmo
 7972           "#
 7973    ));
 7974
 7975    // Change selections again
 7976    cx.set_state(indoc!(
 7977        r#"abc
 7978           d«ˇefghi
 7979
 7980           jk
 7981           nlm»o
 7982           "#
 7983    ));
 7984
 7985    cx.update_editor(|editor, window, cx| {
 7986        editor.add_selection_above(&Default::default(), window, cx);
 7987    });
 7988
 7989    cx.assert_editor_state(indoc!(
 7990        r#"a«ˇbc»
 7991           d«ˇef»ghi
 7992
 7993           j«ˇk»
 7994           n«ˇlm»o
 7995           "#
 7996    ));
 7997
 7998    cx.update_editor(|editor, window, cx| {
 7999        editor.add_selection_below(&Default::default(), window, cx);
 8000    });
 8001
 8002    cx.assert_editor_state(indoc!(
 8003        r#"abc
 8004           d«ˇef»ghi
 8005
 8006           j«ˇk»
 8007           n«ˇlm»o
 8008           "#
 8009    ));
 8010}
 8011
 8012#[gpui::test]
 8013async fn test_add_selection_above_below_multi_cursor(cx: &mut TestAppContext) {
 8014    init_test(cx, |_| {});
 8015    let mut cx = EditorTestContext::new(cx).await;
 8016
 8017    cx.set_state(indoc!(
 8018        r#"line onˇe
 8019           liˇne two
 8020           line three
 8021           line four"#
 8022    ));
 8023
 8024    cx.update_editor(|editor, window, cx| {
 8025        editor.add_selection_below(&Default::default(), window, cx);
 8026    });
 8027
 8028    // test multiple cursors expand in the same direction
 8029    cx.assert_editor_state(indoc!(
 8030        r#"line onˇe
 8031           liˇne twˇo
 8032           liˇne three
 8033           line four"#
 8034    ));
 8035
 8036    cx.update_editor(|editor, window, cx| {
 8037        editor.add_selection_below(&Default::default(), window, cx);
 8038    });
 8039
 8040    cx.update_editor(|editor, window, cx| {
 8041        editor.add_selection_below(&Default::default(), window, cx);
 8042    });
 8043
 8044    // test multiple cursors expand below overflow
 8045    cx.assert_editor_state(indoc!(
 8046        r#"line onˇe
 8047           liˇne twˇo
 8048           liˇne thˇree
 8049           liˇne foˇur"#
 8050    ));
 8051
 8052    cx.update_editor(|editor, window, cx| {
 8053        editor.add_selection_above(&Default::default(), window, cx);
 8054    });
 8055
 8056    // test multiple cursors retrieves back correctly
 8057    cx.assert_editor_state(indoc!(
 8058        r#"line onˇe
 8059           liˇne twˇo
 8060           liˇne thˇree
 8061           line four"#
 8062    ));
 8063
 8064    cx.update_editor(|editor, window, cx| {
 8065        editor.add_selection_above(&Default::default(), window, cx);
 8066    });
 8067
 8068    cx.update_editor(|editor, window, cx| {
 8069        editor.add_selection_above(&Default::default(), window, cx);
 8070    });
 8071
 8072    // test multiple cursor groups maintain independent direction - first expands up, second shrinks above
 8073    cx.assert_editor_state(indoc!(
 8074        r#"liˇne onˇe
 8075           liˇne two
 8076           line three
 8077           line four"#
 8078    ));
 8079
 8080    cx.update_editor(|editor, window, cx| {
 8081        editor.undo_selection(&Default::default(), window, cx);
 8082    });
 8083
 8084    // test undo
 8085    cx.assert_editor_state(indoc!(
 8086        r#"line onˇe
 8087           liˇne twˇo
 8088           line three
 8089           line four"#
 8090    ));
 8091
 8092    cx.update_editor(|editor, window, cx| {
 8093        editor.redo_selection(&Default::default(), window, cx);
 8094    });
 8095
 8096    // test redo
 8097    cx.assert_editor_state(indoc!(
 8098        r#"liˇne onˇe
 8099           liˇne two
 8100           line three
 8101           line four"#
 8102    ));
 8103
 8104    cx.set_state(indoc!(
 8105        r#"abcd
 8106           ef«ghˇ»
 8107           ijkl
 8108           «mˇ»nop"#
 8109    ));
 8110
 8111    cx.update_editor(|editor, window, cx| {
 8112        editor.add_selection_above(&Default::default(), window, cx);
 8113    });
 8114
 8115    // test multiple selections expand in the same direction
 8116    cx.assert_editor_state(indoc!(
 8117        r#"ab«cdˇ»
 8118           ef«ghˇ»
 8119           «iˇ»jkl
 8120           «mˇ»nop"#
 8121    ));
 8122
 8123    cx.update_editor(|editor, window, cx| {
 8124        editor.add_selection_above(&Default::default(), window, cx);
 8125    });
 8126
 8127    // test multiple selection upward overflow
 8128    cx.assert_editor_state(indoc!(
 8129        r#"ab«cdˇ»
 8130           «eˇ»f«ghˇ»
 8131           «iˇ»jkl
 8132           «mˇ»nop"#
 8133    ));
 8134
 8135    cx.update_editor(|editor, window, cx| {
 8136        editor.add_selection_below(&Default::default(), window, cx);
 8137    });
 8138
 8139    // test multiple selection retrieves back correctly
 8140    cx.assert_editor_state(indoc!(
 8141        r#"abcd
 8142           ef«ghˇ»
 8143           «iˇ»jkl
 8144           «mˇ»nop"#
 8145    ));
 8146
 8147    cx.update_editor(|editor, window, cx| {
 8148        editor.add_selection_below(&Default::default(), window, cx);
 8149    });
 8150
 8151    // test multiple cursor groups maintain independent direction - first shrinks down, second expands below
 8152    cx.assert_editor_state(indoc!(
 8153        r#"abcd
 8154           ef«ghˇ»
 8155           ij«klˇ»
 8156           «mˇ»nop"#
 8157    ));
 8158
 8159    cx.update_editor(|editor, window, cx| {
 8160        editor.undo_selection(&Default::default(), window, cx);
 8161    });
 8162
 8163    // test undo
 8164    cx.assert_editor_state(indoc!(
 8165        r#"abcd
 8166           ef«ghˇ»
 8167           «iˇ»jkl
 8168           «mˇ»nop"#
 8169    ));
 8170
 8171    cx.update_editor(|editor, window, cx| {
 8172        editor.redo_selection(&Default::default(), window, cx);
 8173    });
 8174
 8175    // test redo
 8176    cx.assert_editor_state(indoc!(
 8177        r#"abcd
 8178           ef«ghˇ»
 8179           ij«klˇ»
 8180           «mˇ»nop"#
 8181    ));
 8182}
 8183
 8184#[gpui::test]
 8185async fn test_add_selection_above_below_multi_cursor_existing_state(cx: &mut TestAppContext) {
 8186    init_test(cx, |_| {});
 8187    let mut cx = EditorTestContext::new(cx).await;
 8188
 8189    cx.set_state(indoc!(
 8190        r#"line onˇe
 8191           liˇne two
 8192           line three
 8193           line four"#
 8194    ));
 8195
 8196    cx.update_editor(|editor, window, cx| {
 8197        editor.add_selection_below(&Default::default(), window, cx);
 8198        editor.add_selection_below(&Default::default(), window, cx);
 8199        editor.add_selection_below(&Default::default(), window, cx);
 8200    });
 8201
 8202    // initial state with two multi cursor groups
 8203    cx.assert_editor_state(indoc!(
 8204        r#"line onˇe
 8205           liˇne twˇo
 8206           liˇne thˇree
 8207           liˇne foˇur"#
 8208    ));
 8209
 8210    // add single cursor in middle - simulate opt click
 8211    cx.update_editor(|editor, window, cx| {
 8212        let new_cursor_point = DisplayPoint::new(DisplayRow(2), 4);
 8213        editor.begin_selection(new_cursor_point, true, 1, window, cx);
 8214        editor.end_selection(window, cx);
 8215    });
 8216
 8217    cx.assert_editor_state(indoc!(
 8218        r#"line onˇe
 8219           liˇne twˇo
 8220           liˇneˇ thˇree
 8221           liˇne foˇur"#
 8222    ));
 8223
 8224    cx.update_editor(|editor, window, cx| {
 8225        editor.add_selection_above(&Default::default(), window, cx);
 8226    });
 8227
 8228    // test new added selection expands above and existing selection shrinks
 8229    cx.assert_editor_state(indoc!(
 8230        r#"line onˇe
 8231           liˇneˇ twˇo
 8232           liˇneˇ thˇree
 8233           line four"#
 8234    ));
 8235
 8236    cx.update_editor(|editor, window, cx| {
 8237        editor.add_selection_above(&Default::default(), window, cx);
 8238    });
 8239
 8240    // test new added selection expands above and existing selection shrinks
 8241    cx.assert_editor_state(indoc!(
 8242        r#"lineˇ onˇe
 8243           liˇneˇ twˇo
 8244           lineˇ three
 8245           line four"#
 8246    ));
 8247
 8248    // intial state with two selection groups
 8249    cx.set_state(indoc!(
 8250        r#"abcd
 8251           ef«ghˇ»
 8252           ijkl
 8253           «mˇ»nop"#
 8254    ));
 8255
 8256    cx.update_editor(|editor, window, cx| {
 8257        editor.add_selection_above(&Default::default(), window, cx);
 8258        editor.add_selection_above(&Default::default(), window, cx);
 8259    });
 8260
 8261    cx.assert_editor_state(indoc!(
 8262        r#"ab«cdˇ»
 8263           «eˇ»f«ghˇ»
 8264           «iˇ»jkl
 8265           «mˇ»nop"#
 8266    ));
 8267
 8268    // add single selection in middle - simulate opt drag
 8269    cx.update_editor(|editor, window, cx| {
 8270        let new_cursor_point = DisplayPoint::new(DisplayRow(2), 3);
 8271        editor.begin_selection(new_cursor_point, true, 1, window, cx);
 8272        editor.update_selection(
 8273            DisplayPoint::new(DisplayRow(2), 4),
 8274            0,
 8275            gpui::Point::<f32>::default(),
 8276            window,
 8277            cx,
 8278        );
 8279        editor.end_selection(window, cx);
 8280    });
 8281
 8282    cx.assert_editor_state(indoc!(
 8283        r#"ab«cdˇ»
 8284           «eˇ»f«ghˇ»
 8285           «iˇ»jk«lˇ»
 8286           «mˇ»nop"#
 8287    ));
 8288
 8289    cx.update_editor(|editor, window, cx| {
 8290        editor.add_selection_below(&Default::default(), window, cx);
 8291    });
 8292
 8293    // test new added selection expands below, others shrinks from above
 8294    cx.assert_editor_state(indoc!(
 8295        r#"abcd
 8296           ef«ghˇ»
 8297           «iˇ»jk«lˇ»
 8298           «mˇ»no«pˇ»"#
 8299    ));
 8300}
 8301
 8302#[gpui::test]
 8303async fn test_select_next(cx: &mut TestAppContext) {
 8304    init_test(cx, |_| {});
 8305
 8306    let mut cx = EditorTestContext::new(cx).await;
 8307    cx.set_state("abc\nˇabc abc\ndefabc\nabc");
 8308
 8309    cx.update_editor(|e, window, cx| e.select_next(&SelectNext::default(), window, cx))
 8310        .unwrap();
 8311    cx.assert_editor_state("abc\n«abcˇ» abc\ndefabc\nabc");
 8312
 8313    cx.update_editor(|e, window, cx| e.select_next(&SelectNext::default(), window, cx))
 8314        .unwrap();
 8315    cx.assert_editor_state("abc\n«abcˇ» «abcˇ»\ndefabc\nabc");
 8316
 8317    cx.update_editor(|editor, window, cx| editor.undo_selection(&UndoSelection, window, cx));
 8318    cx.assert_editor_state("abc\n«abcˇ» abc\ndefabc\nabc");
 8319
 8320    cx.update_editor(|editor, window, cx| editor.redo_selection(&RedoSelection, window, cx));
 8321    cx.assert_editor_state("abc\n«abcˇ» «abcˇ»\ndefabc\nabc");
 8322
 8323    cx.update_editor(|e, window, cx| e.select_next(&SelectNext::default(), window, cx))
 8324        .unwrap();
 8325    cx.assert_editor_state("abc\n«abcˇ» «abcˇ»\ndefabc\n«abcˇ»");
 8326
 8327    cx.update_editor(|e, window, cx| e.select_next(&SelectNext::default(), window, cx))
 8328        .unwrap();
 8329    cx.assert_editor_state("«abcˇ»\n«abcˇ» «abcˇ»\ndefabc\n«abcˇ»");
 8330
 8331    // Test selection direction should be preserved
 8332    cx.set_state("abc\n«ˇabc» abc\ndefabc\nabc");
 8333
 8334    cx.update_editor(|e, window, cx| e.select_next(&SelectNext::default(), window, cx))
 8335        .unwrap();
 8336    cx.assert_editor_state("abc\n«ˇabc» «ˇabc»\ndefabc\nabc");
 8337}
 8338
 8339#[gpui::test]
 8340async fn test_select_all_matches(cx: &mut TestAppContext) {
 8341    init_test(cx, |_| {});
 8342
 8343    let mut cx = EditorTestContext::new(cx).await;
 8344
 8345    // Test caret-only selections
 8346    cx.set_state("abc\nˇabc abc\ndefabc\nabc");
 8347    cx.update_editor(|e, window, cx| e.select_all_matches(&SelectAllMatches, window, cx))
 8348        .unwrap();
 8349    cx.assert_editor_state("«abcˇ»\n«abcˇ» «abcˇ»\ndefabc\n«abcˇ»");
 8350
 8351    // Test left-to-right selections
 8352    cx.set_state("abc\n«abcˇ»\nabc");
 8353    cx.update_editor(|e, window, cx| e.select_all_matches(&SelectAllMatches, window, cx))
 8354        .unwrap();
 8355    cx.assert_editor_state("«abcˇ»\n«abcˇ»\n«abcˇ»");
 8356
 8357    // Test right-to-left selections
 8358    cx.set_state("abc\n«ˇabc»\nabc");
 8359    cx.update_editor(|e, window, cx| e.select_all_matches(&SelectAllMatches, window, cx))
 8360        .unwrap();
 8361    cx.assert_editor_state("«ˇabc»\n«ˇabc»\n«ˇabc»");
 8362
 8363    // Test selecting whitespace with caret selection
 8364    cx.set_state("abc\nˇ   abc\nabc");
 8365    cx.update_editor(|e, window, cx| e.select_all_matches(&SelectAllMatches, window, cx))
 8366        .unwrap();
 8367    cx.assert_editor_state("abc\n«   ˇ»abc\nabc");
 8368
 8369    // Test selecting whitespace with left-to-right selection
 8370    cx.set_state("abc\n«ˇ  »abc\nabc");
 8371    cx.update_editor(|e, window, cx| e.select_all_matches(&SelectAllMatches, window, cx))
 8372        .unwrap();
 8373    cx.assert_editor_state("abc\n«ˇ  »abc\nabc");
 8374
 8375    // Test no matches with right-to-left selection
 8376    cx.set_state("abc\n«  ˇ»abc\nabc");
 8377    cx.update_editor(|e, window, cx| e.select_all_matches(&SelectAllMatches, window, cx))
 8378        .unwrap();
 8379    cx.assert_editor_state("abc\n«  ˇ»abc\nabc");
 8380
 8381    // Test with a single word and clip_at_line_ends=true (#29823)
 8382    cx.set_state("aˇbc");
 8383    cx.update_editor(|e, window, cx| {
 8384        e.set_clip_at_line_ends(true, cx);
 8385        e.select_all_matches(&SelectAllMatches, window, cx).unwrap();
 8386        e.set_clip_at_line_ends(false, cx);
 8387    });
 8388    cx.assert_editor_state("«abcˇ»");
 8389}
 8390
 8391#[gpui::test]
 8392async fn test_select_all_matches_does_not_scroll(cx: &mut TestAppContext) {
 8393    init_test(cx, |_| {});
 8394
 8395    let mut cx = EditorTestContext::new(cx).await;
 8396
 8397    let large_body_1 = "\nd".repeat(200);
 8398    let large_body_2 = "\ne".repeat(200);
 8399
 8400    cx.set_state(&format!(
 8401        "abc\nabc{large_body_1} «ˇa»bc{large_body_2}\nefabc\nabc"
 8402    ));
 8403    let initial_scroll_position = cx.update_editor(|editor, _, cx| {
 8404        let scroll_position = editor.scroll_position(cx);
 8405        assert!(scroll_position.y > 0.0, "Initial selection is between two large bodies and should have the editor scrolled to it");
 8406        scroll_position
 8407    });
 8408
 8409    cx.update_editor(|e, window, cx| e.select_all_matches(&SelectAllMatches, window, cx))
 8410        .unwrap();
 8411    cx.assert_editor_state(&format!(
 8412        "«ˇa»bc\n«ˇa»bc{large_body_1} «ˇa»bc{large_body_2}\nef«ˇa»bc\n«ˇa»bc"
 8413    ));
 8414    let scroll_position_after_selection =
 8415        cx.update_editor(|editor, _, cx| editor.scroll_position(cx));
 8416    assert_eq!(
 8417        initial_scroll_position, scroll_position_after_selection,
 8418        "Scroll position should not change after selecting all matches"
 8419    );
 8420}
 8421
 8422#[gpui::test]
 8423async fn test_undo_format_scrolls_to_last_edit_pos(cx: &mut TestAppContext) {
 8424    init_test(cx, |_| {});
 8425
 8426    let mut cx = EditorLspTestContext::new_rust(
 8427        lsp::ServerCapabilities {
 8428            document_formatting_provider: Some(lsp::OneOf::Left(true)),
 8429            ..Default::default()
 8430        },
 8431        cx,
 8432    )
 8433    .await;
 8434
 8435    cx.set_state(indoc! {"
 8436        line 1
 8437        line 2
 8438        linˇe 3
 8439        line 4
 8440        line 5
 8441    "});
 8442
 8443    // Make an edit
 8444    cx.update_editor(|editor, window, cx| {
 8445        editor.handle_input("X", window, cx);
 8446    });
 8447
 8448    // Move cursor to a different position
 8449    cx.update_editor(|editor, window, cx| {
 8450        editor.change_selections(SelectionEffects::no_scroll(), window, cx, |s| {
 8451            s.select_ranges([Point::new(4, 2)..Point::new(4, 2)]);
 8452        });
 8453    });
 8454
 8455    cx.assert_editor_state(indoc! {"
 8456        line 1
 8457        line 2
 8458        linXe 3
 8459        line 4
 8460        liˇne 5
 8461    "});
 8462
 8463    cx.lsp
 8464        .set_request_handler::<lsp::request::Formatting, _, _>(move |_, _| async move {
 8465            Ok(Some(vec![lsp::TextEdit::new(
 8466                lsp::Range::new(lsp::Position::new(0, 0), lsp::Position::new(0, 0)),
 8467                "PREFIX ".to_string(),
 8468            )]))
 8469        });
 8470
 8471    cx.update_editor(|editor, window, cx| editor.format(&Default::default(), window, cx))
 8472        .unwrap()
 8473        .await
 8474        .unwrap();
 8475
 8476    cx.assert_editor_state(indoc! {"
 8477        PREFIX line 1
 8478        line 2
 8479        linXe 3
 8480        line 4
 8481        liˇne 5
 8482    "});
 8483
 8484    // Undo formatting
 8485    cx.update_editor(|editor, window, cx| {
 8486        editor.undo(&Default::default(), window, cx);
 8487    });
 8488
 8489    // Verify cursor moved back to position after edit
 8490    cx.assert_editor_state(indoc! {"
 8491        line 1
 8492        line 2
 8493        linXˇe 3
 8494        line 4
 8495        line 5
 8496    "});
 8497}
 8498
 8499#[gpui::test]
 8500async fn test_undo_edit_prediction_scrolls_to_edit_pos(cx: &mut TestAppContext) {
 8501    init_test(cx, |_| {});
 8502
 8503    let mut cx = EditorTestContext::new(cx).await;
 8504
 8505    let provider = cx.new(|_| FakeEditPredictionProvider::default());
 8506    cx.update_editor(|editor, window, cx| {
 8507        editor.set_edit_prediction_provider(Some(provider.clone()), window, cx);
 8508    });
 8509
 8510    cx.set_state(indoc! {"
 8511        line 1
 8512        line 2
 8513        linˇe 3
 8514        line 4
 8515        line 5
 8516        line 6
 8517        line 7
 8518        line 8
 8519        line 9
 8520        line 10
 8521    "});
 8522
 8523    let snapshot = cx.buffer_snapshot();
 8524    let edit_position = snapshot.anchor_after(Point::new(2, 4));
 8525
 8526    cx.update(|_, cx| {
 8527        provider.update(cx, |provider, _| {
 8528            provider.set_edit_prediction(Some(edit_prediction::EditPrediction::Local {
 8529                id: None,
 8530                edits: vec![(edit_position..edit_position, "X".into())],
 8531                edit_preview: None,
 8532            }))
 8533        })
 8534    });
 8535
 8536    cx.update_editor(|editor, window, cx| editor.update_visible_edit_prediction(window, cx));
 8537    cx.update_editor(|editor, window, cx| {
 8538        editor.accept_edit_prediction(&crate::AcceptEditPrediction, window, cx)
 8539    });
 8540
 8541    cx.assert_editor_state(indoc! {"
 8542        line 1
 8543        line 2
 8544        lineXˇ 3
 8545        line 4
 8546        line 5
 8547        line 6
 8548        line 7
 8549        line 8
 8550        line 9
 8551        line 10
 8552    "});
 8553
 8554    cx.update_editor(|editor, window, cx| {
 8555        editor.change_selections(SelectionEffects::no_scroll(), window, cx, |s| {
 8556            s.select_ranges([Point::new(9, 2)..Point::new(9, 2)]);
 8557        });
 8558    });
 8559
 8560    cx.assert_editor_state(indoc! {"
 8561        line 1
 8562        line 2
 8563        lineX 3
 8564        line 4
 8565        line 5
 8566        line 6
 8567        line 7
 8568        line 8
 8569        line 9
 8570        liˇne 10
 8571    "});
 8572
 8573    cx.update_editor(|editor, window, cx| {
 8574        editor.undo(&Default::default(), window, cx);
 8575    });
 8576
 8577    cx.assert_editor_state(indoc! {"
 8578        line 1
 8579        line 2
 8580        lineˇ 3
 8581        line 4
 8582        line 5
 8583        line 6
 8584        line 7
 8585        line 8
 8586        line 9
 8587        line 10
 8588    "});
 8589}
 8590
 8591#[gpui::test]
 8592async fn test_select_next_with_multiple_carets(cx: &mut TestAppContext) {
 8593    init_test(cx, |_| {});
 8594
 8595    let mut cx = EditorTestContext::new(cx).await;
 8596    cx.set_state(
 8597        r#"let foo = 2;
 8598lˇet foo = 2;
 8599let fooˇ = 2;
 8600let foo = 2;
 8601let foo = ˇ2;"#,
 8602    );
 8603
 8604    cx.update_editor(|e, window, cx| e.select_next(&SelectNext::default(), window, cx))
 8605        .unwrap();
 8606    cx.assert_editor_state(
 8607        r#"let foo = 2;
 8608«letˇ» foo = 2;
 8609let «fooˇ» = 2;
 8610let foo = 2;
 8611let foo = «2ˇ»;"#,
 8612    );
 8613
 8614    // noop for multiple selections with different contents
 8615    cx.update_editor(|e, window, cx| e.select_next(&SelectNext::default(), window, cx))
 8616        .unwrap();
 8617    cx.assert_editor_state(
 8618        r#"let foo = 2;
 8619«letˇ» foo = 2;
 8620let «fooˇ» = 2;
 8621let foo = 2;
 8622let foo = «2ˇ»;"#,
 8623    );
 8624
 8625    // Test last selection direction should be preserved
 8626    cx.set_state(
 8627        r#"let foo = 2;
 8628let foo = 2;
 8629let «fooˇ» = 2;
 8630let «ˇfoo» = 2;
 8631let foo = 2;"#,
 8632    );
 8633
 8634    cx.update_editor(|e, window, cx| e.select_next(&SelectNext::default(), window, cx))
 8635        .unwrap();
 8636    cx.assert_editor_state(
 8637        r#"let foo = 2;
 8638let foo = 2;
 8639let «fooˇ» = 2;
 8640let «ˇfoo» = 2;
 8641let «ˇfoo» = 2;"#,
 8642    );
 8643}
 8644
 8645#[gpui::test]
 8646async fn test_select_previous_multibuffer(cx: &mut TestAppContext) {
 8647    init_test(cx, |_| {});
 8648
 8649    let mut cx =
 8650        EditorTestContext::new_multibuffer(cx, ["aaa\n«bbb\nccc\n»ddd", "aaa\n«bbb\nccc\n»ddd"]);
 8651
 8652    cx.assert_editor_state(indoc! {"
 8653        ˇbbb
 8654        ccc
 8655
 8656        bbb
 8657        ccc
 8658        "});
 8659    cx.dispatch_action(SelectPrevious::default());
 8660    cx.assert_editor_state(indoc! {"
 8661                «bbbˇ»
 8662                ccc
 8663
 8664                bbb
 8665                ccc
 8666                "});
 8667    cx.dispatch_action(SelectPrevious::default());
 8668    cx.assert_editor_state(indoc! {"
 8669                «bbbˇ»
 8670                ccc
 8671
 8672                «bbbˇ»
 8673                ccc
 8674                "});
 8675}
 8676
 8677#[gpui::test]
 8678async fn test_select_previous_with_single_caret(cx: &mut TestAppContext) {
 8679    init_test(cx, |_| {});
 8680
 8681    let mut cx = EditorTestContext::new(cx).await;
 8682    cx.set_state("abc\nˇabc abc\ndefabc\nabc");
 8683
 8684    cx.update_editor(|e, window, cx| e.select_previous(&SelectPrevious::default(), window, cx))
 8685        .unwrap();
 8686    cx.assert_editor_state("abc\n«abcˇ» abc\ndefabc\nabc");
 8687
 8688    cx.update_editor(|e, window, cx| e.select_previous(&SelectPrevious::default(), window, cx))
 8689        .unwrap();
 8690    cx.assert_editor_state("«abcˇ»\n«abcˇ» abc\ndefabc\nabc");
 8691
 8692    cx.update_editor(|editor, window, cx| editor.undo_selection(&UndoSelection, window, cx));
 8693    cx.assert_editor_state("abc\n«abcˇ» abc\ndefabc\nabc");
 8694
 8695    cx.update_editor(|editor, window, cx| editor.redo_selection(&RedoSelection, window, cx));
 8696    cx.assert_editor_state("«abcˇ»\n«abcˇ» abc\ndefabc\nabc");
 8697
 8698    cx.update_editor(|e, window, cx| e.select_previous(&SelectPrevious::default(), window, cx))
 8699        .unwrap();
 8700    cx.assert_editor_state("«abcˇ»\n«abcˇ» abc\ndefabc\n«abcˇ»");
 8701
 8702    cx.update_editor(|e, window, cx| e.select_previous(&SelectPrevious::default(), window, cx))
 8703        .unwrap();
 8704    cx.assert_editor_state("«abcˇ»\n«abcˇ» «abcˇ»\ndefabc\n«abcˇ»");
 8705}
 8706
 8707#[gpui::test]
 8708async fn test_select_previous_empty_buffer(cx: &mut TestAppContext) {
 8709    init_test(cx, |_| {});
 8710
 8711    let mut cx = EditorTestContext::new(cx).await;
 8712    cx.set_state("");
 8713
 8714    cx.update_editor(|e, window, cx| e.select_previous(&SelectPrevious::default(), window, cx))
 8715        .unwrap();
 8716    cx.assert_editor_state("«aˇ»");
 8717    cx.update_editor(|e, window, cx| e.select_previous(&SelectPrevious::default(), window, cx))
 8718        .unwrap();
 8719    cx.assert_editor_state("«aˇ»");
 8720}
 8721
 8722#[gpui::test]
 8723async fn test_select_previous_with_multiple_carets(cx: &mut TestAppContext) {
 8724    init_test(cx, |_| {});
 8725
 8726    let mut cx = EditorTestContext::new(cx).await;
 8727    cx.set_state(
 8728        r#"let foo = 2;
 8729lˇet foo = 2;
 8730let fooˇ = 2;
 8731let foo = 2;
 8732let foo = ˇ2;"#,
 8733    );
 8734
 8735    cx.update_editor(|e, window, cx| e.select_previous(&SelectPrevious::default(), window, cx))
 8736        .unwrap();
 8737    cx.assert_editor_state(
 8738        r#"let foo = 2;
 8739«letˇ» foo = 2;
 8740let «fooˇ» = 2;
 8741let foo = 2;
 8742let foo = «2ˇ»;"#,
 8743    );
 8744
 8745    // noop for multiple selections with different contents
 8746    cx.update_editor(|e, window, cx| e.select_previous(&SelectPrevious::default(), window, cx))
 8747        .unwrap();
 8748    cx.assert_editor_state(
 8749        r#"let foo = 2;
 8750«letˇ» foo = 2;
 8751let «fooˇ» = 2;
 8752let foo = 2;
 8753let foo = «2ˇ»;"#,
 8754    );
 8755}
 8756
 8757#[gpui::test]
 8758async fn test_select_previous_with_single_selection(cx: &mut TestAppContext) {
 8759    init_test(cx, |_| {});
 8760
 8761    let mut cx = EditorTestContext::new(cx).await;
 8762    cx.set_state("abc\n«ˇabc» abc\ndefabc\nabc");
 8763
 8764    cx.update_editor(|e, window, cx| e.select_previous(&SelectPrevious::default(), window, cx))
 8765        .unwrap();
 8766    // selection direction is preserved
 8767    cx.assert_editor_state("«ˇabc»\n«ˇabc» abc\ndefabc\nabc");
 8768
 8769    cx.update_editor(|e, window, cx| e.select_previous(&SelectPrevious::default(), window, cx))
 8770        .unwrap();
 8771    cx.assert_editor_state("«ˇabc»\n«ˇabc» abc\ndefabc\n«ˇabc»");
 8772
 8773    cx.update_editor(|editor, window, cx| editor.undo_selection(&UndoSelection, window, cx));
 8774    cx.assert_editor_state("«ˇabc»\n«ˇabc» abc\ndefabc\nabc");
 8775
 8776    cx.update_editor(|editor, window, cx| editor.redo_selection(&RedoSelection, window, cx));
 8777    cx.assert_editor_state("«ˇabc»\n«ˇabc» abc\ndefabc\n«ˇabc»");
 8778
 8779    cx.update_editor(|e, window, cx| e.select_previous(&SelectPrevious::default(), window, cx))
 8780        .unwrap();
 8781    cx.assert_editor_state("«ˇabc»\n«ˇabc» abc\ndef«ˇabc»\n«ˇabc»");
 8782
 8783    cx.update_editor(|e, window, cx| e.select_previous(&SelectPrevious::default(), window, cx))
 8784        .unwrap();
 8785    cx.assert_editor_state("«ˇabc»\n«ˇabc» «ˇabc»\ndef«ˇabc»\n«ˇabc»");
 8786}
 8787
 8788#[gpui::test]
 8789async fn test_select_larger_smaller_syntax_node(cx: &mut TestAppContext) {
 8790    init_test(cx, |_| {});
 8791
 8792    let language = Arc::new(Language::new(
 8793        LanguageConfig::default(),
 8794        Some(tree_sitter_rust::LANGUAGE.into()),
 8795    ));
 8796
 8797    let text = r#"
 8798        use mod1::mod2::{mod3, mod4};
 8799
 8800        fn fn_1(param1: bool, param2: &str) {
 8801            let var1 = "text";
 8802        }
 8803    "#
 8804    .unindent();
 8805
 8806    let buffer = cx.new(|cx| Buffer::local(text, cx).with_language(language, cx));
 8807    let buffer = cx.new(|cx| MultiBuffer::singleton(buffer, cx));
 8808    let (editor, cx) = cx.add_window_view(|window, cx| build_editor(buffer, window, cx));
 8809
 8810    editor
 8811        .condition::<crate::EditorEvent>(cx, |editor, cx| !editor.buffer.read(cx).is_parsing(cx))
 8812        .await;
 8813
 8814    editor.update_in(cx, |editor, window, cx| {
 8815        editor.change_selections(SelectionEffects::no_scroll(), window, cx, |s| {
 8816            s.select_display_ranges([
 8817                DisplayPoint::new(DisplayRow(0), 25)..DisplayPoint::new(DisplayRow(0), 25),
 8818                DisplayPoint::new(DisplayRow(2), 24)..DisplayPoint::new(DisplayRow(2), 12),
 8819                DisplayPoint::new(DisplayRow(3), 18)..DisplayPoint::new(DisplayRow(3), 18),
 8820            ]);
 8821        });
 8822        editor.select_larger_syntax_node(&SelectLargerSyntaxNode, window, cx);
 8823    });
 8824    editor.update(cx, |editor, cx| {
 8825        assert_text_with_selections(
 8826            editor,
 8827            indoc! {r#"
 8828                use mod1::mod2::{mod3, «mod4ˇ»};
 8829
 8830                fn fn_1«ˇ(param1: bool, param2: &str)» {
 8831                    let var1 = "«ˇtext»";
 8832                }
 8833            "#},
 8834            cx,
 8835        );
 8836    });
 8837
 8838    editor.update_in(cx, |editor, window, cx| {
 8839        editor.select_larger_syntax_node(&SelectLargerSyntaxNode, window, cx);
 8840    });
 8841    editor.update(cx, |editor, cx| {
 8842        assert_text_with_selections(
 8843            editor,
 8844            indoc! {r#"
 8845                use mod1::mod2::«{mod3, mod4}ˇ»;
 8846
 8847                «ˇfn fn_1(param1: bool, param2: &str) {
 8848                    let var1 = "text";
 8849 8850            "#},
 8851            cx,
 8852        );
 8853    });
 8854
 8855    editor.update_in(cx, |editor, window, cx| {
 8856        editor.select_larger_syntax_node(&SelectLargerSyntaxNode, window, cx);
 8857    });
 8858    assert_eq!(
 8859        editor.update(cx, |editor, cx| editor.selections.display_ranges(cx)),
 8860        &[DisplayPoint::new(DisplayRow(5), 0)..DisplayPoint::new(DisplayRow(0), 0)]
 8861    );
 8862
 8863    // Trying to expand the selected syntax node one more time has no effect.
 8864    editor.update_in(cx, |editor, window, cx| {
 8865        editor.select_larger_syntax_node(&SelectLargerSyntaxNode, window, cx);
 8866    });
 8867    assert_eq!(
 8868        editor.update(cx, |editor, cx| editor.selections.display_ranges(cx)),
 8869        &[DisplayPoint::new(DisplayRow(5), 0)..DisplayPoint::new(DisplayRow(0), 0)]
 8870    );
 8871
 8872    editor.update_in(cx, |editor, window, cx| {
 8873        editor.select_smaller_syntax_node(&SelectSmallerSyntaxNode, window, cx);
 8874    });
 8875    editor.update(cx, |editor, cx| {
 8876        assert_text_with_selections(
 8877            editor,
 8878            indoc! {r#"
 8879                use mod1::mod2::«{mod3, mod4}ˇ»;
 8880
 8881                «ˇfn fn_1(param1: bool, param2: &str) {
 8882                    let var1 = "text";
 8883 8884            "#},
 8885            cx,
 8886        );
 8887    });
 8888
 8889    editor.update_in(cx, |editor, window, cx| {
 8890        editor.select_smaller_syntax_node(&SelectSmallerSyntaxNode, window, cx);
 8891    });
 8892    editor.update(cx, |editor, cx| {
 8893        assert_text_with_selections(
 8894            editor,
 8895            indoc! {r#"
 8896                use mod1::mod2::{mod3, «mod4ˇ»};
 8897
 8898                fn fn_1«ˇ(param1: bool, param2: &str)» {
 8899                    let var1 = "«ˇtext»";
 8900                }
 8901            "#},
 8902            cx,
 8903        );
 8904    });
 8905
 8906    editor.update_in(cx, |editor, window, cx| {
 8907        editor.select_smaller_syntax_node(&SelectSmallerSyntaxNode, window, cx);
 8908    });
 8909    editor.update(cx, |editor, cx| {
 8910        assert_text_with_selections(
 8911            editor,
 8912            indoc! {r#"
 8913                use mod1::mod2::{mod3, moˇd4};
 8914
 8915                fn fn_1(para«ˇm1: bool, pa»ram2: &str) {
 8916                    let var1 = "teˇxt";
 8917                }
 8918            "#},
 8919            cx,
 8920        );
 8921    });
 8922
 8923    // Trying to shrink the selected syntax node one more time has no effect.
 8924    editor.update_in(cx, |editor, window, cx| {
 8925        editor.select_smaller_syntax_node(&SelectSmallerSyntaxNode, window, cx);
 8926    });
 8927    editor.update_in(cx, |editor, _, cx| {
 8928        assert_text_with_selections(
 8929            editor,
 8930            indoc! {r#"
 8931                use mod1::mod2::{mod3, moˇd4};
 8932
 8933                fn fn_1(para«ˇm1: bool, pa»ram2: &str) {
 8934                    let var1 = "teˇxt";
 8935                }
 8936            "#},
 8937            cx,
 8938        );
 8939    });
 8940
 8941    // Ensure that we keep expanding the selection if the larger selection starts or ends within
 8942    // a fold.
 8943    editor.update_in(cx, |editor, window, cx| {
 8944        editor.fold_creases(
 8945            vec![
 8946                Crease::simple(
 8947                    Point::new(0, 21)..Point::new(0, 24),
 8948                    FoldPlaceholder::test(),
 8949                ),
 8950                Crease::simple(
 8951                    Point::new(3, 20)..Point::new(3, 22),
 8952                    FoldPlaceholder::test(),
 8953                ),
 8954            ],
 8955            true,
 8956            window,
 8957            cx,
 8958        );
 8959        editor.select_larger_syntax_node(&SelectLargerSyntaxNode, window, cx);
 8960    });
 8961    editor.update(cx, |editor, cx| {
 8962        assert_text_with_selections(
 8963            editor,
 8964            indoc! {r#"
 8965                use mod1::mod2::«{mod3, mod4}ˇ»;
 8966
 8967                fn fn_1«ˇ(param1: bool, param2: &str)» {
 8968                    let var1 = "«ˇtext»";
 8969                }
 8970            "#},
 8971            cx,
 8972        );
 8973    });
 8974}
 8975
 8976#[gpui::test]
 8977async fn test_select_larger_syntax_node_for_cursor_at_end(cx: &mut TestAppContext) {
 8978    init_test(cx, |_| {});
 8979
 8980    let language = Arc::new(Language::new(
 8981        LanguageConfig::default(),
 8982        Some(tree_sitter_rust::LANGUAGE.into()),
 8983    ));
 8984
 8985    let text = "let a = 2;";
 8986
 8987    let buffer = cx.new(|cx| Buffer::local(text, cx).with_language(language, cx));
 8988    let buffer = cx.new(|cx| MultiBuffer::singleton(buffer, cx));
 8989    let (editor, cx) = cx.add_window_view(|window, cx| build_editor(buffer, window, cx));
 8990
 8991    editor
 8992        .condition::<crate::EditorEvent>(cx, |editor, cx| !editor.buffer.read(cx).is_parsing(cx))
 8993        .await;
 8994
 8995    // Test case 1: Cursor at end of word
 8996    editor.update_in(cx, |editor, window, cx| {
 8997        editor.change_selections(SelectionEffects::no_scroll(), window, cx, |s| {
 8998            s.select_display_ranges([
 8999                DisplayPoint::new(DisplayRow(0), 5)..DisplayPoint::new(DisplayRow(0), 5)
 9000            ]);
 9001        });
 9002    });
 9003    editor.update(cx, |editor, cx| {
 9004        assert_text_with_selections(editor, "let aˇ = 2;", cx);
 9005    });
 9006    editor.update_in(cx, |editor, window, cx| {
 9007        editor.select_larger_syntax_node(&SelectLargerSyntaxNode, window, cx);
 9008    });
 9009    editor.update(cx, |editor, cx| {
 9010        assert_text_with_selections(editor, "let «ˇa» = 2;", cx);
 9011    });
 9012    editor.update_in(cx, |editor, window, cx| {
 9013        editor.select_larger_syntax_node(&SelectLargerSyntaxNode, window, cx);
 9014    });
 9015    editor.update(cx, |editor, cx| {
 9016        assert_text_with_selections(editor, "«ˇlet a = 2;»", cx);
 9017    });
 9018
 9019    // Test case 2: Cursor at end of statement
 9020    editor.update_in(cx, |editor, window, cx| {
 9021        editor.change_selections(SelectionEffects::no_scroll(), window, cx, |s| {
 9022            s.select_display_ranges([
 9023                DisplayPoint::new(DisplayRow(0), 11)..DisplayPoint::new(DisplayRow(0), 11)
 9024            ]);
 9025        });
 9026    });
 9027    editor.update(cx, |editor, cx| {
 9028        assert_text_with_selections(editor, "let a = 2;ˇ", cx);
 9029    });
 9030    editor.update_in(cx, |editor, window, cx| {
 9031        editor.select_larger_syntax_node(&SelectLargerSyntaxNode, window, cx);
 9032    });
 9033    editor.update(cx, |editor, cx| {
 9034        assert_text_with_selections(editor, "«ˇlet a = 2;»", cx);
 9035    });
 9036}
 9037
 9038#[gpui::test]
 9039async fn test_select_larger_syntax_node_for_cursor_at_symbol(cx: &mut TestAppContext) {
 9040    init_test(cx, |_| {});
 9041
 9042    let language = Arc::new(Language::new(
 9043        LanguageConfig {
 9044            name: "JavaScript".into(),
 9045            ..Default::default()
 9046        },
 9047        Some(tree_sitter_typescript::LANGUAGE_TSX.into()),
 9048    ));
 9049
 9050    let text = r#"
 9051        let a = {
 9052            key: "value",
 9053        };
 9054    "#
 9055    .unindent();
 9056
 9057    let buffer = cx.new(|cx| Buffer::local(text, cx).with_language(language, cx));
 9058    let buffer = cx.new(|cx| MultiBuffer::singleton(buffer, cx));
 9059    let (editor, cx) = cx.add_window_view(|window, cx| build_editor(buffer, window, cx));
 9060
 9061    editor
 9062        .condition::<crate::EditorEvent>(cx, |editor, cx| !editor.buffer.read(cx).is_parsing(cx))
 9063        .await;
 9064
 9065    // Test case 1: Cursor after '{'
 9066    editor.update_in(cx, |editor, window, cx| {
 9067        editor.change_selections(SelectionEffects::no_scroll(), window, cx, |s| {
 9068            s.select_display_ranges([
 9069                DisplayPoint::new(DisplayRow(0), 9)..DisplayPoint::new(DisplayRow(0), 9)
 9070            ]);
 9071        });
 9072    });
 9073    editor.update(cx, |editor, cx| {
 9074        assert_text_with_selections(
 9075            editor,
 9076            indoc! {r#"
 9077                let a = {ˇ
 9078                    key: "value",
 9079                };
 9080            "#},
 9081            cx,
 9082        );
 9083    });
 9084    editor.update_in(cx, |editor, window, cx| {
 9085        editor.select_larger_syntax_node(&SelectLargerSyntaxNode, window, cx);
 9086    });
 9087    editor.update(cx, |editor, cx| {
 9088        assert_text_with_selections(
 9089            editor,
 9090            indoc! {r#"
 9091                let a = «ˇ{
 9092                    key: "value",
 9093                }»;
 9094            "#},
 9095            cx,
 9096        );
 9097    });
 9098
 9099    // Test case 2: Cursor after ':'
 9100    editor.update_in(cx, |editor, window, cx| {
 9101        editor.change_selections(SelectionEffects::no_scroll(), window, cx, |s| {
 9102            s.select_display_ranges([
 9103                DisplayPoint::new(DisplayRow(1), 8)..DisplayPoint::new(DisplayRow(1), 8)
 9104            ]);
 9105        });
 9106    });
 9107    editor.update(cx, |editor, cx| {
 9108        assert_text_with_selections(
 9109            editor,
 9110            indoc! {r#"
 9111                let a = {
 9112                    key:ˇ "value",
 9113                };
 9114            "#},
 9115            cx,
 9116        );
 9117    });
 9118    editor.update_in(cx, |editor, window, cx| {
 9119        editor.select_larger_syntax_node(&SelectLargerSyntaxNode, window, cx);
 9120    });
 9121    editor.update(cx, |editor, cx| {
 9122        assert_text_with_selections(
 9123            editor,
 9124            indoc! {r#"
 9125                let a = {
 9126                    «ˇkey: "value"»,
 9127                };
 9128            "#},
 9129            cx,
 9130        );
 9131    });
 9132    editor.update_in(cx, |editor, window, cx| {
 9133        editor.select_larger_syntax_node(&SelectLargerSyntaxNode, window, cx);
 9134    });
 9135    editor.update(cx, |editor, cx| {
 9136        assert_text_with_selections(
 9137            editor,
 9138            indoc! {r#"
 9139                let a = «ˇ{
 9140                    key: "value",
 9141                }»;
 9142            "#},
 9143            cx,
 9144        );
 9145    });
 9146
 9147    // Test case 3: Cursor after ','
 9148    editor.update_in(cx, |editor, window, cx| {
 9149        editor.change_selections(SelectionEffects::no_scroll(), window, cx, |s| {
 9150            s.select_display_ranges([
 9151                DisplayPoint::new(DisplayRow(1), 17)..DisplayPoint::new(DisplayRow(1), 17)
 9152            ]);
 9153        });
 9154    });
 9155    editor.update(cx, |editor, cx| {
 9156        assert_text_with_selections(
 9157            editor,
 9158            indoc! {r#"
 9159                let a = {
 9160                    key: "value",ˇ
 9161                };
 9162            "#},
 9163            cx,
 9164        );
 9165    });
 9166    editor.update_in(cx, |editor, window, cx| {
 9167        editor.select_larger_syntax_node(&SelectLargerSyntaxNode, window, cx);
 9168    });
 9169    editor.update(cx, |editor, cx| {
 9170        assert_text_with_selections(
 9171            editor,
 9172            indoc! {r#"
 9173                let a = «ˇ{
 9174                    key: "value",
 9175                }»;
 9176            "#},
 9177            cx,
 9178        );
 9179    });
 9180
 9181    // Test case 4: Cursor after ';'
 9182    editor.update_in(cx, |editor, window, cx| {
 9183        editor.change_selections(SelectionEffects::no_scroll(), window, cx, |s| {
 9184            s.select_display_ranges([
 9185                DisplayPoint::new(DisplayRow(2), 2)..DisplayPoint::new(DisplayRow(2), 2)
 9186            ]);
 9187        });
 9188    });
 9189    editor.update(cx, |editor, cx| {
 9190        assert_text_with_selections(
 9191            editor,
 9192            indoc! {r#"
 9193                let a = {
 9194                    key: "value",
 9195                };ˇ
 9196            "#},
 9197            cx,
 9198        );
 9199    });
 9200    editor.update_in(cx, |editor, window, cx| {
 9201        editor.select_larger_syntax_node(&SelectLargerSyntaxNode, window, cx);
 9202    });
 9203    editor.update(cx, |editor, cx| {
 9204        assert_text_with_selections(
 9205            editor,
 9206            indoc! {r#"
 9207                «ˇlet a = {
 9208                    key: "value",
 9209                };
 9210                »"#},
 9211            cx,
 9212        );
 9213    });
 9214}
 9215
 9216#[gpui::test]
 9217async fn test_select_larger_smaller_syntax_node_for_string(cx: &mut TestAppContext) {
 9218    init_test(cx, |_| {});
 9219
 9220    let language = Arc::new(Language::new(
 9221        LanguageConfig::default(),
 9222        Some(tree_sitter_rust::LANGUAGE.into()),
 9223    ));
 9224
 9225    let text = r#"
 9226        use mod1::mod2::{mod3, mod4};
 9227
 9228        fn fn_1(param1: bool, param2: &str) {
 9229            let var1 = "hello world";
 9230        }
 9231    "#
 9232    .unindent();
 9233
 9234    let buffer = cx.new(|cx| Buffer::local(text, cx).with_language(language, cx));
 9235    let buffer = cx.new(|cx| MultiBuffer::singleton(buffer, cx));
 9236    let (editor, cx) = cx.add_window_view(|window, cx| build_editor(buffer, window, cx));
 9237
 9238    editor
 9239        .condition::<crate::EditorEvent>(cx, |editor, cx| !editor.buffer.read(cx).is_parsing(cx))
 9240        .await;
 9241
 9242    // Test 1: Cursor on a letter of a string word
 9243    editor.update_in(cx, |editor, window, cx| {
 9244        editor.change_selections(SelectionEffects::no_scroll(), window, cx, |s| {
 9245            s.select_display_ranges([
 9246                DisplayPoint::new(DisplayRow(3), 17)..DisplayPoint::new(DisplayRow(3), 17)
 9247            ]);
 9248        });
 9249    });
 9250    editor.update_in(cx, |editor, window, cx| {
 9251        assert_text_with_selections(
 9252            editor,
 9253            indoc! {r#"
 9254                use mod1::mod2::{mod3, mod4};
 9255
 9256                fn fn_1(param1: bool, param2: &str) {
 9257                    let var1 = "hˇello world";
 9258                }
 9259            "#},
 9260            cx,
 9261        );
 9262        editor.select_larger_syntax_node(&SelectLargerSyntaxNode, window, cx);
 9263        assert_text_with_selections(
 9264            editor,
 9265            indoc! {r#"
 9266                use mod1::mod2::{mod3, mod4};
 9267
 9268                fn fn_1(param1: bool, param2: &str) {
 9269                    let var1 = "«ˇhello» world";
 9270                }
 9271            "#},
 9272            cx,
 9273        );
 9274    });
 9275
 9276    // Test 2: Partial selection within a word
 9277    editor.update_in(cx, |editor, window, cx| {
 9278        editor.change_selections(SelectionEffects::no_scroll(), window, cx, |s| {
 9279            s.select_display_ranges([
 9280                DisplayPoint::new(DisplayRow(3), 17)..DisplayPoint::new(DisplayRow(3), 19)
 9281            ]);
 9282        });
 9283    });
 9284    editor.update_in(cx, |editor, window, cx| {
 9285        assert_text_with_selections(
 9286            editor,
 9287            indoc! {r#"
 9288                use mod1::mod2::{mod3, mod4};
 9289
 9290                fn fn_1(param1: bool, param2: &str) {
 9291                    let var1 = "h«elˇ»lo world";
 9292                }
 9293            "#},
 9294            cx,
 9295        );
 9296        editor.select_larger_syntax_node(&SelectLargerSyntaxNode, window, cx);
 9297        assert_text_with_selections(
 9298            editor,
 9299            indoc! {r#"
 9300                use mod1::mod2::{mod3, mod4};
 9301
 9302                fn fn_1(param1: bool, param2: &str) {
 9303                    let var1 = "«ˇhello» world";
 9304                }
 9305            "#},
 9306            cx,
 9307        );
 9308    });
 9309
 9310    // Test 3: Complete word already selected
 9311    editor.update_in(cx, |editor, window, cx| {
 9312        editor.change_selections(SelectionEffects::no_scroll(), window, cx, |s| {
 9313            s.select_display_ranges([
 9314                DisplayPoint::new(DisplayRow(3), 16)..DisplayPoint::new(DisplayRow(3), 21)
 9315            ]);
 9316        });
 9317    });
 9318    editor.update_in(cx, |editor, window, cx| {
 9319        assert_text_with_selections(
 9320            editor,
 9321            indoc! {r#"
 9322                use mod1::mod2::{mod3, mod4};
 9323
 9324                fn fn_1(param1: bool, param2: &str) {
 9325                    let var1 = "«helloˇ» world";
 9326                }
 9327            "#},
 9328            cx,
 9329        );
 9330        editor.select_larger_syntax_node(&SelectLargerSyntaxNode, window, cx);
 9331        assert_text_with_selections(
 9332            editor,
 9333            indoc! {r#"
 9334                use mod1::mod2::{mod3, mod4};
 9335
 9336                fn fn_1(param1: bool, param2: &str) {
 9337                    let var1 = "«hello worldˇ»";
 9338                }
 9339            "#},
 9340            cx,
 9341        );
 9342    });
 9343
 9344    // Test 4: Selection spanning across words
 9345    editor.update_in(cx, |editor, window, cx| {
 9346        editor.change_selections(SelectionEffects::no_scroll(), window, cx, |s| {
 9347            s.select_display_ranges([
 9348                DisplayPoint::new(DisplayRow(3), 19)..DisplayPoint::new(DisplayRow(3), 24)
 9349            ]);
 9350        });
 9351    });
 9352    editor.update_in(cx, |editor, window, cx| {
 9353        assert_text_with_selections(
 9354            editor,
 9355            indoc! {r#"
 9356                use mod1::mod2::{mod3, mod4};
 9357
 9358                fn fn_1(param1: bool, param2: &str) {
 9359                    let var1 = "hel«lo woˇ»rld";
 9360                }
 9361            "#},
 9362            cx,
 9363        );
 9364        editor.select_larger_syntax_node(&SelectLargerSyntaxNode, window, cx);
 9365        assert_text_with_selections(
 9366            editor,
 9367            indoc! {r#"
 9368                use mod1::mod2::{mod3, mod4};
 9369
 9370                fn fn_1(param1: bool, param2: &str) {
 9371                    let var1 = "«ˇhello world»";
 9372                }
 9373            "#},
 9374            cx,
 9375        );
 9376    });
 9377
 9378    // Test 5: Expansion beyond string
 9379    editor.update_in(cx, |editor, window, cx| {
 9380        editor.select_larger_syntax_node(&SelectLargerSyntaxNode, window, cx);
 9381        editor.select_larger_syntax_node(&SelectLargerSyntaxNode, window, cx);
 9382        assert_text_with_selections(
 9383            editor,
 9384            indoc! {r#"
 9385                use mod1::mod2::{mod3, mod4};
 9386
 9387                fn fn_1(param1: bool, param2: &str) {
 9388                    «ˇlet var1 = "hello world";»
 9389                }
 9390            "#},
 9391            cx,
 9392        );
 9393    });
 9394}
 9395
 9396#[gpui::test]
 9397async fn test_unwrap_syntax_nodes(cx: &mut gpui::TestAppContext) {
 9398    init_test(cx, |_| {});
 9399
 9400    let mut cx = EditorTestContext::new(cx).await;
 9401
 9402    let language = Arc::new(Language::new(
 9403        LanguageConfig::default(),
 9404        Some(tree_sitter_rust::LANGUAGE.into()),
 9405    ));
 9406
 9407    cx.update_buffer(|buffer, cx| {
 9408        buffer.set_language(Some(language), cx);
 9409    });
 9410
 9411    cx.set_state(indoc! { r#"use mod1::{mod2::{«mod3ˇ», mod4}, mod5::{mod6, «mod7ˇ»}};"# });
 9412    cx.update_editor(|editor, window, cx| {
 9413        editor.unwrap_syntax_node(&UnwrapSyntaxNode, window, cx);
 9414    });
 9415
 9416    cx.assert_editor_state(indoc! { r#"use mod1::{mod2::«mod3ˇ», mod5::«mod7ˇ»};"# });
 9417
 9418    cx.set_state(indoc! { r#"fn a() {
 9419          // what
 9420          // a
 9421          // ˇlong
 9422          // method
 9423          // I
 9424          // sure
 9425          // hope
 9426          // it
 9427          // works
 9428    }"# });
 9429
 9430    let buffer = cx.update_multibuffer(|multibuffer, _| multibuffer.as_singleton().unwrap());
 9431    let multi_buffer = cx.new(|_| MultiBuffer::new(Capability::ReadWrite));
 9432    cx.update(|_, cx| {
 9433        multi_buffer.update(cx, |multi_buffer, cx| {
 9434            multi_buffer.set_excerpts_for_path(
 9435                PathKey::for_buffer(&buffer, cx),
 9436                buffer,
 9437                [Point::new(1, 0)..Point::new(1, 0)],
 9438                3,
 9439                cx,
 9440            );
 9441        });
 9442    });
 9443
 9444    let editor2 = cx.new_window_entity(|window, cx| {
 9445        Editor::new(EditorMode::full(), multi_buffer, None, window, cx)
 9446    });
 9447
 9448    let mut cx = EditorTestContext::for_editor_in(editor2, &mut cx).await;
 9449    cx.update_editor(|editor, window, cx| {
 9450        editor.change_selections(SelectionEffects::default(), window, cx, |s| {
 9451            s.select_ranges([Point::new(3, 0)..Point::new(3, 0)]);
 9452        })
 9453    });
 9454
 9455    cx.assert_editor_state(indoc! { "
 9456        fn a() {
 9457              // what
 9458              // a
 9459        ˇ      // long
 9460              // method"});
 9461
 9462    cx.update_editor(|editor, window, cx| {
 9463        editor.unwrap_syntax_node(&UnwrapSyntaxNode, window, cx);
 9464    });
 9465
 9466    // Although we could potentially make the action work when the syntax node
 9467    // is half-hidden, it seems a bit dangerous as you can't easily tell what it
 9468    // did. Maybe we could also expand the excerpt to contain the range?
 9469    cx.assert_editor_state(indoc! { "
 9470        fn a() {
 9471              // what
 9472              // a
 9473        ˇ      // long
 9474              // method"});
 9475}
 9476
 9477#[gpui::test]
 9478async fn test_fold_function_bodies(cx: &mut TestAppContext) {
 9479    init_test(cx, |_| {});
 9480
 9481    let base_text = r#"
 9482        impl A {
 9483            // this is an uncommitted comment
 9484
 9485            fn b() {
 9486                c();
 9487            }
 9488
 9489            // this is another uncommitted comment
 9490
 9491            fn d() {
 9492                // e
 9493                // f
 9494            }
 9495        }
 9496
 9497        fn g() {
 9498            // h
 9499        }
 9500    "#
 9501    .unindent();
 9502
 9503    let text = r#"
 9504        ˇimpl A {
 9505
 9506            fn b() {
 9507                c();
 9508            }
 9509
 9510            fn d() {
 9511                // e
 9512                // f
 9513            }
 9514        }
 9515
 9516        fn g() {
 9517            // h
 9518        }
 9519    "#
 9520    .unindent();
 9521
 9522    let mut cx = EditorLspTestContext::new_rust(Default::default(), cx).await;
 9523    cx.set_state(&text);
 9524    cx.set_head_text(&base_text);
 9525    cx.update_editor(|editor, window, cx| {
 9526        editor.expand_all_diff_hunks(&Default::default(), window, cx);
 9527    });
 9528
 9529    cx.assert_state_with_diff(
 9530        "
 9531        ˇimpl A {
 9532      -     // this is an uncommitted comment
 9533
 9534            fn b() {
 9535                c();
 9536            }
 9537
 9538      -     // this is another uncommitted comment
 9539      -
 9540            fn d() {
 9541                // e
 9542                // f
 9543            }
 9544        }
 9545
 9546        fn g() {
 9547            // h
 9548        }
 9549    "
 9550        .unindent(),
 9551    );
 9552
 9553    let expected_display_text = "
 9554        impl A {
 9555            // this is an uncommitted comment
 9556
 9557            fn b() {
 9558 9559            }
 9560
 9561            // this is another uncommitted comment
 9562
 9563            fn d() {
 9564 9565            }
 9566        }
 9567
 9568        fn g() {
 9569 9570        }
 9571        "
 9572    .unindent();
 9573
 9574    cx.update_editor(|editor, window, cx| {
 9575        editor.fold_function_bodies(&FoldFunctionBodies, window, cx);
 9576        assert_eq!(editor.display_text(cx), expected_display_text);
 9577    });
 9578}
 9579
 9580#[gpui::test]
 9581async fn test_autoindent(cx: &mut TestAppContext) {
 9582    init_test(cx, |_| {});
 9583
 9584    let language = Arc::new(
 9585        Language::new(
 9586            LanguageConfig {
 9587                brackets: BracketPairConfig {
 9588                    pairs: vec![
 9589                        BracketPair {
 9590                            start: "{".to_string(),
 9591                            end: "}".to_string(),
 9592                            close: false,
 9593                            surround: false,
 9594                            newline: true,
 9595                        },
 9596                        BracketPair {
 9597                            start: "(".to_string(),
 9598                            end: ")".to_string(),
 9599                            close: false,
 9600                            surround: false,
 9601                            newline: true,
 9602                        },
 9603                    ],
 9604                    ..Default::default()
 9605                },
 9606                ..Default::default()
 9607            },
 9608            Some(tree_sitter_rust::LANGUAGE.into()),
 9609        )
 9610        .with_indents_query(
 9611            r#"
 9612                (_ "(" ")" @end) @indent
 9613                (_ "{" "}" @end) @indent
 9614            "#,
 9615        )
 9616        .unwrap(),
 9617    );
 9618
 9619    let text = "fn a() {}";
 9620
 9621    let buffer = cx.new(|cx| Buffer::local(text, cx).with_language(language, cx));
 9622    let buffer = cx.new(|cx| MultiBuffer::singleton(buffer, cx));
 9623    let (editor, cx) = cx.add_window_view(|window, cx| build_editor(buffer, window, cx));
 9624    editor
 9625        .condition::<crate::EditorEvent>(cx, |editor, cx| !editor.buffer.read(cx).is_parsing(cx))
 9626        .await;
 9627
 9628    editor.update_in(cx, |editor, window, cx| {
 9629        editor.change_selections(SelectionEffects::no_scroll(), window, cx, |s| {
 9630            s.select_ranges([5..5, 8..8, 9..9])
 9631        });
 9632        editor.newline(&Newline, window, cx);
 9633        assert_eq!(editor.text(cx), "fn a(\n    \n) {\n    \n}\n");
 9634        assert_eq!(
 9635            editor.selections.ranges(&editor.display_snapshot(cx)),
 9636            &[
 9637                Point::new(1, 4)..Point::new(1, 4),
 9638                Point::new(3, 4)..Point::new(3, 4),
 9639                Point::new(5, 0)..Point::new(5, 0)
 9640            ]
 9641        );
 9642    });
 9643}
 9644
 9645#[gpui::test]
 9646async fn test_autoindent_disabled(cx: &mut TestAppContext) {
 9647    init_test(cx, |settings| settings.defaults.auto_indent = Some(false));
 9648
 9649    let language = Arc::new(
 9650        Language::new(
 9651            LanguageConfig {
 9652                brackets: BracketPairConfig {
 9653                    pairs: vec![
 9654                        BracketPair {
 9655                            start: "{".to_string(),
 9656                            end: "}".to_string(),
 9657                            close: false,
 9658                            surround: false,
 9659                            newline: true,
 9660                        },
 9661                        BracketPair {
 9662                            start: "(".to_string(),
 9663                            end: ")".to_string(),
 9664                            close: false,
 9665                            surround: false,
 9666                            newline: true,
 9667                        },
 9668                    ],
 9669                    ..Default::default()
 9670                },
 9671                ..Default::default()
 9672            },
 9673            Some(tree_sitter_rust::LANGUAGE.into()),
 9674        )
 9675        .with_indents_query(
 9676            r#"
 9677                (_ "(" ")" @end) @indent
 9678                (_ "{" "}" @end) @indent
 9679            "#,
 9680        )
 9681        .unwrap(),
 9682    );
 9683
 9684    let text = "fn a() {}";
 9685
 9686    let buffer = cx.new(|cx| Buffer::local(text, cx).with_language(language, cx));
 9687    let buffer = cx.new(|cx| MultiBuffer::singleton(buffer, cx));
 9688    let (editor, cx) = cx.add_window_view(|window, cx| build_editor(buffer, window, cx));
 9689    editor
 9690        .condition::<crate::EditorEvent>(cx, |editor, cx| !editor.buffer.read(cx).is_parsing(cx))
 9691        .await;
 9692
 9693    editor.update_in(cx, |editor, window, cx| {
 9694        editor.change_selections(SelectionEffects::no_scroll(), window, cx, |s| {
 9695            s.select_ranges([5..5, 8..8, 9..9])
 9696        });
 9697        editor.newline(&Newline, window, cx);
 9698        assert_eq!(
 9699            editor.text(cx),
 9700            indoc!(
 9701                "
 9702                fn a(
 9703
 9704                ) {
 9705
 9706                }
 9707                "
 9708            )
 9709        );
 9710        assert_eq!(
 9711            editor.selections.ranges(&editor.display_snapshot(cx)),
 9712            &[
 9713                Point::new(1, 0)..Point::new(1, 0),
 9714                Point::new(3, 0)..Point::new(3, 0),
 9715                Point::new(5, 0)..Point::new(5, 0)
 9716            ]
 9717        );
 9718    });
 9719}
 9720
 9721#[gpui::test]
 9722async fn test_autoindent_disabled_with_nested_language(cx: &mut TestAppContext) {
 9723    init_test(cx, |settings| {
 9724        settings.defaults.auto_indent = Some(true);
 9725        settings.languages.0.insert(
 9726            "python".into(),
 9727            LanguageSettingsContent {
 9728                auto_indent: Some(false),
 9729                ..Default::default()
 9730            },
 9731        );
 9732    });
 9733
 9734    let mut cx = EditorTestContext::new(cx).await;
 9735
 9736    let injected_language = Arc::new(
 9737        Language::new(
 9738            LanguageConfig {
 9739                brackets: BracketPairConfig {
 9740                    pairs: vec![
 9741                        BracketPair {
 9742                            start: "{".to_string(),
 9743                            end: "}".to_string(),
 9744                            close: false,
 9745                            surround: false,
 9746                            newline: true,
 9747                        },
 9748                        BracketPair {
 9749                            start: "(".to_string(),
 9750                            end: ")".to_string(),
 9751                            close: true,
 9752                            surround: false,
 9753                            newline: true,
 9754                        },
 9755                    ],
 9756                    ..Default::default()
 9757                },
 9758                name: "python".into(),
 9759                ..Default::default()
 9760            },
 9761            Some(tree_sitter_python::LANGUAGE.into()),
 9762        )
 9763        .with_indents_query(
 9764            r#"
 9765                (_ "(" ")" @end) @indent
 9766                (_ "{" "}" @end) @indent
 9767            "#,
 9768        )
 9769        .unwrap(),
 9770    );
 9771
 9772    let language = Arc::new(
 9773        Language::new(
 9774            LanguageConfig {
 9775                brackets: BracketPairConfig {
 9776                    pairs: vec![
 9777                        BracketPair {
 9778                            start: "{".to_string(),
 9779                            end: "}".to_string(),
 9780                            close: false,
 9781                            surround: false,
 9782                            newline: true,
 9783                        },
 9784                        BracketPair {
 9785                            start: "(".to_string(),
 9786                            end: ")".to_string(),
 9787                            close: true,
 9788                            surround: false,
 9789                            newline: true,
 9790                        },
 9791                    ],
 9792                    ..Default::default()
 9793                },
 9794                name: LanguageName::new("rust"),
 9795                ..Default::default()
 9796            },
 9797            Some(tree_sitter_rust::LANGUAGE.into()),
 9798        )
 9799        .with_indents_query(
 9800            r#"
 9801                (_ "(" ")" @end) @indent
 9802                (_ "{" "}" @end) @indent
 9803            "#,
 9804        )
 9805        .unwrap()
 9806        .with_injection_query(
 9807            r#"
 9808            (macro_invocation
 9809                macro: (identifier) @_macro_name
 9810                (token_tree) @injection.content
 9811                (#set! injection.language "python"))
 9812           "#,
 9813        )
 9814        .unwrap(),
 9815    );
 9816
 9817    cx.language_registry().add(injected_language);
 9818    cx.language_registry().add(language.clone());
 9819
 9820    cx.update_buffer(|buffer, cx| {
 9821        buffer.set_language(Some(language), cx);
 9822    });
 9823
 9824    cx.set_state(r#"struct A {ˇ}"#);
 9825
 9826    cx.update_editor(|editor, window, cx| {
 9827        editor.newline(&Default::default(), window, cx);
 9828    });
 9829
 9830    cx.assert_editor_state(indoc!(
 9831        "struct A {
 9832            ˇ
 9833        }"
 9834    ));
 9835
 9836    cx.set_state(r#"select_biased!(ˇ)"#);
 9837
 9838    cx.update_editor(|editor, window, cx| {
 9839        editor.newline(&Default::default(), window, cx);
 9840        editor.handle_input("def ", window, cx);
 9841        editor.handle_input("(", window, cx);
 9842        editor.newline(&Default::default(), window, cx);
 9843        editor.handle_input("a", window, cx);
 9844    });
 9845
 9846    cx.assert_editor_state(indoc!(
 9847        "select_biased!(
 9848        def (
 9849 9850        )
 9851        )"
 9852    ));
 9853}
 9854
 9855#[gpui::test]
 9856async fn test_autoindent_selections(cx: &mut TestAppContext) {
 9857    init_test(cx, |_| {});
 9858
 9859    {
 9860        let mut cx = EditorLspTestContext::new_rust(Default::default(), cx).await;
 9861        cx.set_state(indoc! {"
 9862            impl A {
 9863
 9864                fn b() {}
 9865
 9866            «fn c() {
 9867
 9868            }ˇ»
 9869            }
 9870        "});
 9871
 9872        cx.update_editor(|editor, window, cx| {
 9873            editor.autoindent(&Default::default(), window, cx);
 9874        });
 9875
 9876        cx.assert_editor_state(indoc! {"
 9877            impl A {
 9878
 9879                fn b() {}
 9880
 9881                «fn c() {
 9882
 9883                }ˇ»
 9884            }
 9885        "});
 9886    }
 9887
 9888    {
 9889        let mut cx = EditorTestContext::new_multibuffer(
 9890            cx,
 9891            [indoc! { "
 9892                impl A {
 9893                «
 9894                // a
 9895                fn b(){}
 9896                »
 9897                «
 9898                    }
 9899                    fn c(){}
 9900                »
 9901            "}],
 9902        );
 9903
 9904        let buffer = cx.update_editor(|editor, _, cx| {
 9905            let buffer = editor.buffer().update(cx, |buffer, _| {
 9906                buffer.all_buffers().iter().next().unwrap().clone()
 9907            });
 9908            buffer.update(cx, |buffer, cx| buffer.set_language(Some(rust_lang()), cx));
 9909            buffer
 9910        });
 9911
 9912        cx.run_until_parked();
 9913        cx.update_editor(|editor, window, cx| {
 9914            editor.select_all(&Default::default(), window, cx);
 9915            editor.autoindent(&Default::default(), window, cx)
 9916        });
 9917        cx.run_until_parked();
 9918
 9919        cx.update(|_, cx| {
 9920            assert_eq!(
 9921                buffer.read(cx).text(),
 9922                indoc! { "
 9923                    impl A {
 9924
 9925                        // a
 9926                        fn b(){}
 9927
 9928
 9929                    }
 9930                    fn c(){}
 9931
 9932                " }
 9933            )
 9934        });
 9935    }
 9936}
 9937
 9938#[gpui::test]
 9939async fn test_autoclose_and_auto_surround_pairs(cx: &mut TestAppContext) {
 9940    init_test(cx, |_| {});
 9941
 9942    let mut cx = EditorTestContext::new(cx).await;
 9943
 9944    let language = Arc::new(Language::new(
 9945        LanguageConfig {
 9946            brackets: BracketPairConfig {
 9947                pairs: vec![
 9948                    BracketPair {
 9949                        start: "{".to_string(),
 9950                        end: "}".to_string(),
 9951                        close: true,
 9952                        surround: true,
 9953                        newline: true,
 9954                    },
 9955                    BracketPair {
 9956                        start: "(".to_string(),
 9957                        end: ")".to_string(),
 9958                        close: true,
 9959                        surround: true,
 9960                        newline: true,
 9961                    },
 9962                    BracketPair {
 9963                        start: "/*".to_string(),
 9964                        end: " */".to_string(),
 9965                        close: true,
 9966                        surround: true,
 9967                        newline: true,
 9968                    },
 9969                    BracketPair {
 9970                        start: "[".to_string(),
 9971                        end: "]".to_string(),
 9972                        close: false,
 9973                        surround: false,
 9974                        newline: true,
 9975                    },
 9976                    BracketPair {
 9977                        start: "\"".to_string(),
 9978                        end: "\"".to_string(),
 9979                        close: true,
 9980                        surround: true,
 9981                        newline: false,
 9982                    },
 9983                    BracketPair {
 9984                        start: "<".to_string(),
 9985                        end: ">".to_string(),
 9986                        close: false,
 9987                        surround: true,
 9988                        newline: true,
 9989                    },
 9990                ],
 9991                ..Default::default()
 9992            },
 9993            autoclose_before: "})]".to_string(),
 9994            ..Default::default()
 9995        },
 9996        Some(tree_sitter_rust::LANGUAGE.into()),
 9997    ));
 9998
 9999    cx.language_registry().add(language.clone());
10000    cx.update_buffer(|buffer, cx| {
10001        buffer.set_language(Some(language), cx);
10002    });
10003
10004    cx.set_state(
10005        &r#"
10006            🏀ˇ
10007            εˇ
10008            ❤️ˇ
10009        "#
10010        .unindent(),
10011    );
10012
10013    // autoclose multiple nested brackets at multiple cursors
10014    cx.update_editor(|editor, window, cx| {
10015        editor.handle_input("{", window, cx);
10016        editor.handle_input("{", window, cx);
10017        editor.handle_input("{", window, cx);
10018    });
10019    cx.assert_editor_state(
10020        &"
10021            🏀{{{ˇ}}}
10022            ε{{{ˇ}}}
10023            ❤️{{{ˇ}}}
10024        "
10025        .unindent(),
10026    );
10027
10028    // insert a different closing bracket
10029    cx.update_editor(|editor, window, cx| {
10030        editor.handle_input(")", window, cx);
10031    });
10032    cx.assert_editor_state(
10033        &"
10034            🏀{{{)ˇ}}}
10035            ε{{{)ˇ}}}
10036            ❤️{{{)ˇ}}}
10037        "
10038        .unindent(),
10039    );
10040
10041    // skip over the auto-closed brackets when typing a closing bracket
10042    cx.update_editor(|editor, window, cx| {
10043        editor.move_right(&MoveRight, window, cx);
10044        editor.handle_input("}", window, cx);
10045        editor.handle_input("}", window, cx);
10046        editor.handle_input("}", window, cx);
10047    });
10048    cx.assert_editor_state(
10049        &"
10050            🏀{{{)}}}}ˇ
10051            ε{{{)}}}}ˇ
10052            ❤️{{{)}}}}ˇ
10053        "
10054        .unindent(),
10055    );
10056
10057    // autoclose multi-character pairs
10058    cx.set_state(
10059        &"
10060            ˇ
10061            ˇ
10062        "
10063        .unindent(),
10064    );
10065    cx.update_editor(|editor, window, cx| {
10066        editor.handle_input("/", window, cx);
10067        editor.handle_input("*", window, cx);
10068    });
10069    cx.assert_editor_state(
10070        &"
10071            /*ˇ */
10072            /*ˇ */
10073        "
10074        .unindent(),
10075    );
10076
10077    // one cursor autocloses a multi-character pair, one cursor
10078    // does not autoclose.
10079    cx.set_state(
10080        &"
1008110082            ˇ
10083        "
10084        .unindent(),
10085    );
10086    cx.update_editor(|editor, window, cx| editor.handle_input("*", window, cx));
10087    cx.assert_editor_state(
10088        &"
10089            /*ˇ */
1009010091        "
10092        .unindent(),
10093    );
10094
10095    // Don't autoclose if the next character isn't whitespace and isn't
10096    // listed in the language's "autoclose_before" section.
10097    cx.set_state("ˇa b");
10098    cx.update_editor(|editor, window, cx| editor.handle_input("{", window, cx));
10099    cx.assert_editor_state("{ˇa b");
10100
10101    // Don't autoclose if `close` is false for the bracket pair
10102    cx.set_state("ˇ");
10103    cx.update_editor(|editor, window, cx| editor.handle_input("[", window, cx));
10104    cx.assert_editor_state("");
10105
10106    // Surround with brackets if text is selected
10107    cx.set_state("«aˇ» b");
10108    cx.update_editor(|editor, window, cx| editor.handle_input("{", window, cx));
10109    cx.assert_editor_state("{«aˇ»} b");
10110
10111    // Autoclose when not immediately after a word character
10112    cx.set_state("a ˇ");
10113    cx.update_editor(|editor, window, cx| editor.handle_input("\"", window, cx));
10114    cx.assert_editor_state("a \"ˇ\"");
10115
10116    // Autoclose pair where the start and end characters are the same
10117    cx.update_editor(|editor, window, cx| editor.handle_input("\"", window, cx));
10118    cx.assert_editor_state("a \"\"ˇ");
10119
10120    // Don't autoclose when immediately after a word character
10121    cx.set_state("");
10122    cx.update_editor(|editor, window, cx| editor.handle_input("\"", window, cx));
10123    cx.assert_editor_state("a\"ˇ");
10124
10125    // Do autoclose when after a non-word character
10126    cx.set_state("");
10127    cx.update_editor(|editor, window, cx| editor.handle_input("\"", window, cx));
10128    cx.assert_editor_state("{\"ˇ\"");
10129
10130    // Non identical pairs autoclose regardless of preceding character
10131    cx.set_state("");
10132    cx.update_editor(|editor, window, cx| editor.handle_input("{", window, cx));
10133    cx.assert_editor_state("a{ˇ}");
10134
10135    // Don't autoclose pair if autoclose is disabled
10136    cx.set_state("ˇ");
10137    cx.update_editor(|editor, window, cx| editor.handle_input("<", window, cx));
10138    cx.assert_editor_state("");
10139
10140    // Surround with brackets if text is selected and auto_surround is enabled, even if autoclose is disabled
10141    cx.set_state("«aˇ» b");
10142    cx.update_editor(|editor, window, cx| editor.handle_input("<", window, cx));
10143    cx.assert_editor_state("<«aˇ»> b");
10144}
10145
10146#[gpui::test]
10147async fn test_always_treat_brackets_as_autoclosed_skip_over(cx: &mut TestAppContext) {
10148    init_test(cx, |settings| {
10149        settings.defaults.always_treat_brackets_as_autoclosed = Some(true);
10150    });
10151
10152    let mut cx = EditorTestContext::new(cx).await;
10153
10154    let language = Arc::new(Language::new(
10155        LanguageConfig {
10156            brackets: BracketPairConfig {
10157                pairs: vec![
10158                    BracketPair {
10159                        start: "{".to_string(),
10160                        end: "}".to_string(),
10161                        close: true,
10162                        surround: true,
10163                        newline: true,
10164                    },
10165                    BracketPair {
10166                        start: "(".to_string(),
10167                        end: ")".to_string(),
10168                        close: true,
10169                        surround: true,
10170                        newline: true,
10171                    },
10172                    BracketPair {
10173                        start: "[".to_string(),
10174                        end: "]".to_string(),
10175                        close: false,
10176                        surround: false,
10177                        newline: true,
10178                    },
10179                ],
10180                ..Default::default()
10181            },
10182            autoclose_before: "})]".to_string(),
10183            ..Default::default()
10184        },
10185        Some(tree_sitter_rust::LANGUAGE.into()),
10186    ));
10187
10188    cx.language_registry().add(language.clone());
10189    cx.update_buffer(|buffer, cx| {
10190        buffer.set_language(Some(language), cx);
10191    });
10192
10193    cx.set_state(
10194        &"
10195            ˇ
10196            ˇ
10197            ˇ
10198        "
10199        .unindent(),
10200    );
10201
10202    // ensure only matching closing brackets are skipped over
10203    cx.update_editor(|editor, window, cx| {
10204        editor.handle_input("}", window, cx);
10205        editor.move_left(&MoveLeft, window, cx);
10206        editor.handle_input(")", window, cx);
10207        editor.move_left(&MoveLeft, window, cx);
10208    });
10209    cx.assert_editor_state(
10210        &"
10211            ˇ)}
10212            ˇ)}
10213            ˇ)}
10214        "
10215        .unindent(),
10216    );
10217
10218    // skip-over closing brackets at multiple cursors
10219    cx.update_editor(|editor, window, cx| {
10220        editor.handle_input(")", window, cx);
10221        editor.handle_input("}", window, cx);
10222    });
10223    cx.assert_editor_state(
10224        &"
10225            )}ˇ
10226            )}ˇ
10227            )}ˇ
10228        "
10229        .unindent(),
10230    );
10231
10232    // ignore non-close brackets
10233    cx.update_editor(|editor, window, cx| {
10234        editor.handle_input("]", window, cx);
10235        editor.move_left(&MoveLeft, window, cx);
10236        editor.handle_input("]", window, cx);
10237    });
10238    cx.assert_editor_state(
10239        &"
10240            )}]ˇ]
10241            )}]ˇ]
10242            )}]ˇ]
10243        "
10244        .unindent(),
10245    );
10246}
10247
10248#[gpui::test]
10249async fn test_autoclose_with_embedded_language(cx: &mut TestAppContext) {
10250    init_test(cx, |_| {});
10251
10252    let mut cx = EditorTestContext::new(cx).await;
10253
10254    let html_language = Arc::new(
10255        Language::new(
10256            LanguageConfig {
10257                name: "HTML".into(),
10258                brackets: BracketPairConfig {
10259                    pairs: vec![
10260                        BracketPair {
10261                            start: "<".into(),
10262                            end: ">".into(),
10263                            close: true,
10264                            ..Default::default()
10265                        },
10266                        BracketPair {
10267                            start: "{".into(),
10268                            end: "}".into(),
10269                            close: true,
10270                            ..Default::default()
10271                        },
10272                        BracketPair {
10273                            start: "(".into(),
10274                            end: ")".into(),
10275                            close: true,
10276                            ..Default::default()
10277                        },
10278                    ],
10279                    ..Default::default()
10280                },
10281                autoclose_before: "})]>".into(),
10282                ..Default::default()
10283            },
10284            Some(tree_sitter_html::LANGUAGE.into()),
10285        )
10286        .with_injection_query(
10287            r#"
10288            (script_element
10289                (raw_text) @injection.content
10290                (#set! injection.language "javascript"))
10291            "#,
10292        )
10293        .unwrap(),
10294    );
10295
10296    let javascript_language = Arc::new(Language::new(
10297        LanguageConfig {
10298            name: "JavaScript".into(),
10299            brackets: BracketPairConfig {
10300                pairs: vec![
10301                    BracketPair {
10302                        start: "/*".into(),
10303                        end: " */".into(),
10304                        close: true,
10305                        ..Default::default()
10306                    },
10307                    BracketPair {
10308                        start: "{".into(),
10309                        end: "}".into(),
10310                        close: true,
10311                        ..Default::default()
10312                    },
10313                    BracketPair {
10314                        start: "(".into(),
10315                        end: ")".into(),
10316                        close: true,
10317                        ..Default::default()
10318                    },
10319                ],
10320                ..Default::default()
10321            },
10322            autoclose_before: "})]>".into(),
10323            ..Default::default()
10324        },
10325        Some(tree_sitter_typescript::LANGUAGE_TSX.into()),
10326    ));
10327
10328    cx.language_registry().add(html_language.clone());
10329    cx.language_registry().add(javascript_language);
10330    cx.executor().run_until_parked();
10331
10332    cx.update_buffer(|buffer, cx| {
10333        buffer.set_language(Some(html_language), cx);
10334    });
10335
10336    cx.set_state(
10337        &r#"
10338            <body>ˇ
10339                <script>
10340                    var x = 1;ˇ
10341                </script>
10342            </body>ˇ
10343        "#
10344        .unindent(),
10345    );
10346
10347    // Precondition: different languages are active at different locations.
10348    cx.update_editor(|editor, window, cx| {
10349        let snapshot = editor.snapshot(window, cx);
10350        let cursors = editor
10351            .selections
10352            .ranges::<usize>(&editor.display_snapshot(cx));
10353        let languages = cursors
10354            .iter()
10355            .map(|c| snapshot.language_at(c.start).unwrap().name())
10356            .collect::<Vec<_>>();
10357        assert_eq!(
10358            languages,
10359            &["HTML".into(), "JavaScript".into(), "HTML".into()]
10360        );
10361    });
10362
10363    // Angle brackets autoclose in HTML, but not JavaScript.
10364    cx.update_editor(|editor, window, cx| {
10365        editor.handle_input("<", window, cx);
10366        editor.handle_input("a", window, cx);
10367    });
10368    cx.assert_editor_state(
10369        &r#"
10370            <body><aˇ>
10371                <script>
10372                    var x = 1;<aˇ
10373                </script>
10374            </body><aˇ>
10375        "#
10376        .unindent(),
10377    );
10378
10379    // Curly braces and parens autoclose in both HTML and JavaScript.
10380    cx.update_editor(|editor, window, cx| {
10381        editor.handle_input(" b=", window, cx);
10382        editor.handle_input("{", window, cx);
10383        editor.handle_input("c", window, cx);
10384        editor.handle_input("(", window, cx);
10385    });
10386    cx.assert_editor_state(
10387        &r#"
10388            <body><a b={c(ˇ)}>
10389                <script>
10390                    var x = 1;<a b={c(ˇ)}
10391                </script>
10392            </body><a b={c(ˇ)}>
10393        "#
10394        .unindent(),
10395    );
10396
10397    // Brackets that were already autoclosed are skipped.
10398    cx.update_editor(|editor, window, cx| {
10399        editor.handle_input(")", window, cx);
10400        editor.handle_input("d", window, cx);
10401        editor.handle_input("}", window, cx);
10402    });
10403    cx.assert_editor_state(
10404        &r#"
10405            <body><a b={c()d}ˇ>
10406                <script>
10407                    var x = 1;<a b={c()d}ˇ
10408                </script>
10409            </body><a b={c()d}ˇ>
10410        "#
10411        .unindent(),
10412    );
10413    cx.update_editor(|editor, window, cx| {
10414        editor.handle_input(">", window, cx);
10415    });
10416    cx.assert_editor_state(
10417        &r#"
10418            <body><a b={c()d}>ˇ
10419                <script>
10420                    var x = 1;<a b={c()d}>ˇ
10421                </script>
10422            </body><a b={c()d}>ˇ
10423        "#
10424        .unindent(),
10425    );
10426
10427    // Reset
10428    cx.set_state(
10429        &r#"
10430            <body>ˇ
10431                <script>
10432                    var x = 1;ˇ
10433                </script>
10434            </body>ˇ
10435        "#
10436        .unindent(),
10437    );
10438
10439    cx.update_editor(|editor, window, cx| {
10440        editor.handle_input("<", window, cx);
10441    });
10442    cx.assert_editor_state(
10443        &r#"
10444            <body><ˇ>
10445                <script>
10446                    var x = 1;<ˇ
10447                </script>
10448            </body><ˇ>
10449        "#
10450        .unindent(),
10451    );
10452
10453    // When backspacing, the closing angle brackets are removed.
10454    cx.update_editor(|editor, window, cx| {
10455        editor.backspace(&Backspace, window, cx);
10456    });
10457    cx.assert_editor_state(
10458        &r#"
10459            <body>ˇ
10460                <script>
10461                    var x = 1;ˇ
10462                </script>
10463            </body>ˇ
10464        "#
10465        .unindent(),
10466    );
10467
10468    // Block comments autoclose in JavaScript, but not HTML.
10469    cx.update_editor(|editor, window, cx| {
10470        editor.handle_input("/", window, cx);
10471        editor.handle_input("*", window, cx);
10472    });
10473    cx.assert_editor_state(
10474        &r#"
10475            <body>/*ˇ
10476                <script>
10477                    var x = 1;/*ˇ */
10478                </script>
10479            </body>/*ˇ
10480        "#
10481        .unindent(),
10482    );
10483}
10484
10485#[gpui::test]
10486async fn test_autoclose_with_overrides(cx: &mut TestAppContext) {
10487    init_test(cx, |_| {});
10488
10489    let mut cx = EditorTestContext::new(cx).await;
10490
10491    let rust_language = Arc::new(
10492        Language::new(
10493            LanguageConfig {
10494                name: "Rust".into(),
10495                brackets: serde_json::from_value(json!([
10496                    { "start": "{", "end": "}", "close": true, "newline": true },
10497                    { "start": "\"", "end": "\"", "close": true, "newline": false, "not_in": ["string"] },
10498                ]))
10499                .unwrap(),
10500                autoclose_before: "})]>".into(),
10501                ..Default::default()
10502            },
10503            Some(tree_sitter_rust::LANGUAGE.into()),
10504        )
10505        .with_override_query("(string_literal) @string")
10506        .unwrap(),
10507    );
10508
10509    cx.language_registry().add(rust_language.clone());
10510    cx.update_buffer(|buffer, cx| {
10511        buffer.set_language(Some(rust_language), cx);
10512    });
10513
10514    cx.set_state(
10515        &r#"
10516            let x = ˇ
10517        "#
10518        .unindent(),
10519    );
10520
10521    // Inserting a quotation mark. A closing quotation mark is automatically inserted.
10522    cx.update_editor(|editor, window, cx| {
10523        editor.handle_input("\"", window, cx);
10524    });
10525    cx.assert_editor_state(
10526        &r#"
10527            let x = "ˇ"
10528        "#
10529        .unindent(),
10530    );
10531
10532    // Inserting another quotation mark. The cursor moves across the existing
10533    // automatically-inserted quotation mark.
10534    cx.update_editor(|editor, window, cx| {
10535        editor.handle_input("\"", window, cx);
10536    });
10537    cx.assert_editor_state(
10538        &r#"
10539            let x = ""ˇ
10540        "#
10541        .unindent(),
10542    );
10543
10544    // Reset
10545    cx.set_state(
10546        &r#"
10547            let x = ˇ
10548        "#
10549        .unindent(),
10550    );
10551
10552    // Inserting a quotation mark inside of a string. A second quotation mark is not inserted.
10553    cx.update_editor(|editor, window, cx| {
10554        editor.handle_input("\"", window, cx);
10555        editor.handle_input(" ", window, cx);
10556        editor.move_left(&Default::default(), window, cx);
10557        editor.handle_input("\\", window, cx);
10558        editor.handle_input("\"", window, cx);
10559    });
10560    cx.assert_editor_state(
10561        &r#"
10562            let x = "\"ˇ "
10563        "#
10564        .unindent(),
10565    );
10566
10567    // Inserting a closing quotation mark at the position of an automatically-inserted quotation
10568    // mark. Nothing is inserted.
10569    cx.update_editor(|editor, window, cx| {
10570        editor.move_right(&Default::default(), window, cx);
10571        editor.handle_input("\"", window, cx);
10572    });
10573    cx.assert_editor_state(
10574        &r#"
10575            let x = "\" "ˇ
10576        "#
10577        .unindent(),
10578    );
10579}
10580
10581#[gpui::test]
10582async fn test_surround_with_pair(cx: &mut TestAppContext) {
10583    init_test(cx, |_| {});
10584
10585    let language = Arc::new(Language::new(
10586        LanguageConfig {
10587            brackets: BracketPairConfig {
10588                pairs: vec![
10589                    BracketPair {
10590                        start: "{".to_string(),
10591                        end: "}".to_string(),
10592                        close: true,
10593                        surround: true,
10594                        newline: true,
10595                    },
10596                    BracketPair {
10597                        start: "/* ".to_string(),
10598                        end: "*/".to_string(),
10599                        close: true,
10600                        surround: true,
10601                        ..Default::default()
10602                    },
10603                ],
10604                ..Default::default()
10605            },
10606            ..Default::default()
10607        },
10608        Some(tree_sitter_rust::LANGUAGE.into()),
10609    ));
10610
10611    let text = r#"
10612        a
10613        b
10614        c
10615    "#
10616    .unindent();
10617
10618    let buffer = cx.new(|cx| Buffer::local(text, cx).with_language(language, cx));
10619    let buffer = cx.new(|cx| MultiBuffer::singleton(buffer, cx));
10620    let (editor, cx) = cx.add_window_view(|window, cx| build_editor(buffer, window, cx));
10621    editor
10622        .condition::<crate::EditorEvent>(cx, |editor, cx| !editor.buffer.read(cx).is_parsing(cx))
10623        .await;
10624
10625    editor.update_in(cx, |editor, window, cx| {
10626        editor.change_selections(SelectionEffects::no_scroll(), window, cx, |s| {
10627            s.select_display_ranges([
10628                DisplayPoint::new(DisplayRow(0), 0)..DisplayPoint::new(DisplayRow(0), 1),
10629                DisplayPoint::new(DisplayRow(1), 0)..DisplayPoint::new(DisplayRow(1), 1),
10630                DisplayPoint::new(DisplayRow(2), 0)..DisplayPoint::new(DisplayRow(2), 1),
10631            ])
10632        });
10633
10634        editor.handle_input("{", window, cx);
10635        editor.handle_input("{", window, cx);
10636        editor.handle_input("{", window, cx);
10637        assert_eq!(
10638            editor.text(cx),
10639            "
10640                {{{a}}}
10641                {{{b}}}
10642                {{{c}}}
10643            "
10644            .unindent()
10645        );
10646        assert_eq!(
10647            editor.selections.display_ranges(cx),
10648            [
10649                DisplayPoint::new(DisplayRow(0), 3)..DisplayPoint::new(DisplayRow(0), 4),
10650                DisplayPoint::new(DisplayRow(1), 3)..DisplayPoint::new(DisplayRow(1), 4),
10651                DisplayPoint::new(DisplayRow(2), 3)..DisplayPoint::new(DisplayRow(2), 4)
10652            ]
10653        );
10654
10655        editor.undo(&Undo, window, cx);
10656        editor.undo(&Undo, window, cx);
10657        editor.undo(&Undo, window, cx);
10658        assert_eq!(
10659            editor.text(cx),
10660            "
10661                a
10662                b
10663                c
10664            "
10665            .unindent()
10666        );
10667        assert_eq!(
10668            editor.selections.display_ranges(cx),
10669            [
10670                DisplayPoint::new(DisplayRow(0), 0)..DisplayPoint::new(DisplayRow(0), 1),
10671                DisplayPoint::new(DisplayRow(1), 0)..DisplayPoint::new(DisplayRow(1), 1),
10672                DisplayPoint::new(DisplayRow(2), 0)..DisplayPoint::new(DisplayRow(2), 1)
10673            ]
10674        );
10675
10676        // Ensure inserting the first character of a multi-byte bracket pair
10677        // doesn't surround the selections with the bracket.
10678        editor.handle_input("/", window, cx);
10679        assert_eq!(
10680            editor.text(cx),
10681            "
10682                /
10683                /
10684                /
10685            "
10686            .unindent()
10687        );
10688        assert_eq!(
10689            editor.selections.display_ranges(cx),
10690            [
10691                DisplayPoint::new(DisplayRow(0), 1)..DisplayPoint::new(DisplayRow(0), 1),
10692                DisplayPoint::new(DisplayRow(1), 1)..DisplayPoint::new(DisplayRow(1), 1),
10693                DisplayPoint::new(DisplayRow(2), 1)..DisplayPoint::new(DisplayRow(2), 1)
10694            ]
10695        );
10696
10697        editor.undo(&Undo, window, cx);
10698        assert_eq!(
10699            editor.text(cx),
10700            "
10701                a
10702                b
10703                c
10704            "
10705            .unindent()
10706        );
10707        assert_eq!(
10708            editor.selections.display_ranges(cx),
10709            [
10710                DisplayPoint::new(DisplayRow(0), 0)..DisplayPoint::new(DisplayRow(0), 1),
10711                DisplayPoint::new(DisplayRow(1), 0)..DisplayPoint::new(DisplayRow(1), 1),
10712                DisplayPoint::new(DisplayRow(2), 0)..DisplayPoint::new(DisplayRow(2), 1)
10713            ]
10714        );
10715
10716        // Ensure inserting the last character of a multi-byte bracket pair
10717        // doesn't surround the selections with the bracket.
10718        editor.handle_input("*", window, cx);
10719        assert_eq!(
10720            editor.text(cx),
10721            "
10722                *
10723                *
10724                *
10725            "
10726            .unindent()
10727        );
10728        assert_eq!(
10729            editor.selections.display_ranges(cx),
10730            [
10731                DisplayPoint::new(DisplayRow(0), 1)..DisplayPoint::new(DisplayRow(0), 1),
10732                DisplayPoint::new(DisplayRow(1), 1)..DisplayPoint::new(DisplayRow(1), 1),
10733                DisplayPoint::new(DisplayRow(2), 1)..DisplayPoint::new(DisplayRow(2), 1)
10734            ]
10735        );
10736    });
10737}
10738
10739#[gpui::test]
10740async fn test_delete_autoclose_pair(cx: &mut TestAppContext) {
10741    init_test(cx, |_| {});
10742
10743    let language = Arc::new(Language::new(
10744        LanguageConfig {
10745            brackets: BracketPairConfig {
10746                pairs: vec![BracketPair {
10747                    start: "{".to_string(),
10748                    end: "}".to_string(),
10749                    close: true,
10750                    surround: true,
10751                    newline: true,
10752                }],
10753                ..Default::default()
10754            },
10755            autoclose_before: "}".to_string(),
10756            ..Default::default()
10757        },
10758        Some(tree_sitter_rust::LANGUAGE.into()),
10759    ));
10760
10761    let text = r#"
10762        a
10763        b
10764        c
10765    "#
10766    .unindent();
10767
10768    let buffer = cx.new(|cx| Buffer::local(text, cx).with_language(language, cx));
10769    let buffer = cx.new(|cx| MultiBuffer::singleton(buffer, cx));
10770    let (editor, cx) = cx.add_window_view(|window, cx| build_editor(buffer, window, cx));
10771    editor
10772        .condition::<crate::EditorEvent>(cx, |editor, cx| !editor.buffer.read(cx).is_parsing(cx))
10773        .await;
10774
10775    editor.update_in(cx, |editor, window, cx| {
10776        editor.change_selections(SelectionEffects::no_scroll(), window, cx, |s| {
10777            s.select_ranges([
10778                Point::new(0, 1)..Point::new(0, 1),
10779                Point::new(1, 1)..Point::new(1, 1),
10780                Point::new(2, 1)..Point::new(2, 1),
10781            ])
10782        });
10783
10784        editor.handle_input("{", window, cx);
10785        editor.handle_input("{", window, cx);
10786        editor.handle_input("_", window, cx);
10787        assert_eq!(
10788            editor.text(cx),
10789            "
10790                a{{_}}
10791                b{{_}}
10792                c{{_}}
10793            "
10794            .unindent()
10795        );
10796        assert_eq!(
10797            editor
10798                .selections
10799                .ranges::<Point>(&editor.display_snapshot(cx)),
10800            [
10801                Point::new(0, 4)..Point::new(0, 4),
10802                Point::new(1, 4)..Point::new(1, 4),
10803                Point::new(2, 4)..Point::new(2, 4)
10804            ]
10805        );
10806
10807        editor.backspace(&Default::default(), window, cx);
10808        editor.backspace(&Default::default(), window, cx);
10809        assert_eq!(
10810            editor.text(cx),
10811            "
10812                a{}
10813                b{}
10814                c{}
10815            "
10816            .unindent()
10817        );
10818        assert_eq!(
10819            editor
10820                .selections
10821                .ranges::<Point>(&editor.display_snapshot(cx)),
10822            [
10823                Point::new(0, 2)..Point::new(0, 2),
10824                Point::new(1, 2)..Point::new(1, 2),
10825                Point::new(2, 2)..Point::new(2, 2)
10826            ]
10827        );
10828
10829        editor.delete_to_previous_word_start(&Default::default(), window, cx);
10830        assert_eq!(
10831            editor.text(cx),
10832            "
10833                a
10834                b
10835                c
10836            "
10837            .unindent()
10838        );
10839        assert_eq!(
10840            editor
10841                .selections
10842                .ranges::<Point>(&editor.display_snapshot(cx)),
10843            [
10844                Point::new(0, 1)..Point::new(0, 1),
10845                Point::new(1, 1)..Point::new(1, 1),
10846                Point::new(2, 1)..Point::new(2, 1)
10847            ]
10848        );
10849    });
10850}
10851
10852#[gpui::test]
10853async fn test_always_treat_brackets_as_autoclosed_delete(cx: &mut TestAppContext) {
10854    init_test(cx, |settings| {
10855        settings.defaults.always_treat_brackets_as_autoclosed = Some(true);
10856    });
10857
10858    let mut cx = EditorTestContext::new(cx).await;
10859
10860    let language = Arc::new(Language::new(
10861        LanguageConfig {
10862            brackets: BracketPairConfig {
10863                pairs: vec![
10864                    BracketPair {
10865                        start: "{".to_string(),
10866                        end: "}".to_string(),
10867                        close: true,
10868                        surround: true,
10869                        newline: true,
10870                    },
10871                    BracketPair {
10872                        start: "(".to_string(),
10873                        end: ")".to_string(),
10874                        close: true,
10875                        surround: true,
10876                        newline: true,
10877                    },
10878                    BracketPair {
10879                        start: "[".to_string(),
10880                        end: "]".to_string(),
10881                        close: false,
10882                        surround: true,
10883                        newline: true,
10884                    },
10885                ],
10886                ..Default::default()
10887            },
10888            autoclose_before: "})]".to_string(),
10889            ..Default::default()
10890        },
10891        Some(tree_sitter_rust::LANGUAGE.into()),
10892    ));
10893
10894    cx.language_registry().add(language.clone());
10895    cx.update_buffer(|buffer, cx| {
10896        buffer.set_language(Some(language), cx);
10897    });
10898
10899    cx.set_state(
10900        &"
10901            {(ˇ)}
10902            [[ˇ]]
10903            {(ˇ)}
10904        "
10905        .unindent(),
10906    );
10907
10908    cx.update_editor(|editor, window, cx| {
10909        editor.backspace(&Default::default(), window, cx);
10910        editor.backspace(&Default::default(), window, cx);
10911    });
10912
10913    cx.assert_editor_state(
10914        &"
10915            ˇ
10916            ˇ]]
10917            ˇ
10918        "
10919        .unindent(),
10920    );
10921
10922    cx.update_editor(|editor, window, cx| {
10923        editor.handle_input("{", window, cx);
10924        editor.handle_input("{", window, cx);
10925        editor.move_right(&MoveRight, window, cx);
10926        editor.move_right(&MoveRight, window, cx);
10927        editor.move_left(&MoveLeft, window, cx);
10928        editor.move_left(&MoveLeft, window, cx);
10929        editor.backspace(&Default::default(), window, cx);
10930    });
10931
10932    cx.assert_editor_state(
10933        &"
10934            {ˇ}
10935            {ˇ}]]
10936            {ˇ}
10937        "
10938        .unindent(),
10939    );
10940
10941    cx.update_editor(|editor, window, cx| {
10942        editor.backspace(&Default::default(), window, cx);
10943    });
10944
10945    cx.assert_editor_state(
10946        &"
10947            ˇ
10948            ˇ]]
10949            ˇ
10950        "
10951        .unindent(),
10952    );
10953}
10954
10955#[gpui::test]
10956async fn test_auto_replace_emoji_shortcode(cx: &mut TestAppContext) {
10957    init_test(cx, |_| {});
10958
10959    let language = Arc::new(Language::new(
10960        LanguageConfig::default(),
10961        Some(tree_sitter_rust::LANGUAGE.into()),
10962    ));
10963
10964    let buffer = cx.new(|cx| Buffer::local("", cx).with_language(language, cx));
10965    let buffer = cx.new(|cx| MultiBuffer::singleton(buffer, cx));
10966    let (editor, cx) = cx.add_window_view(|window, cx| build_editor(buffer, window, cx));
10967    editor
10968        .condition::<crate::EditorEvent>(cx, |editor, cx| !editor.buffer.read(cx).is_parsing(cx))
10969        .await;
10970
10971    editor.update_in(cx, |editor, window, cx| {
10972        editor.set_auto_replace_emoji_shortcode(true);
10973
10974        editor.handle_input("Hello ", window, cx);
10975        editor.handle_input(":wave", window, cx);
10976        assert_eq!(editor.text(cx), "Hello :wave".unindent());
10977
10978        editor.handle_input(":", window, cx);
10979        assert_eq!(editor.text(cx), "Hello 👋".unindent());
10980
10981        editor.handle_input(" :smile", window, cx);
10982        assert_eq!(editor.text(cx), "Hello 👋 :smile".unindent());
10983
10984        editor.handle_input(":", window, cx);
10985        assert_eq!(editor.text(cx), "Hello 👋 😄".unindent());
10986
10987        // Ensure shortcode gets replaced when it is part of a word that only consists of emojis
10988        editor.handle_input(":wave", window, cx);
10989        assert_eq!(editor.text(cx), "Hello 👋 😄:wave".unindent());
10990
10991        editor.handle_input(":", window, cx);
10992        assert_eq!(editor.text(cx), "Hello 👋 😄👋".unindent());
10993
10994        editor.handle_input(":1", window, cx);
10995        assert_eq!(editor.text(cx), "Hello 👋 😄👋:1".unindent());
10996
10997        editor.handle_input(":", window, cx);
10998        assert_eq!(editor.text(cx), "Hello 👋 😄👋:1:".unindent());
10999
11000        // Ensure shortcode does not get replaced when it is part of a word
11001        editor.handle_input(" Test:wave", window, cx);
11002        assert_eq!(editor.text(cx), "Hello 👋 😄👋:1: Test:wave".unindent());
11003
11004        editor.handle_input(":", window, cx);
11005        assert_eq!(editor.text(cx), "Hello 👋 😄👋:1: Test:wave:".unindent());
11006
11007        editor.set_auto_replace_emoji_shortcode(false);
11008
11009        // Ensure shortcode does not get replaced when auto replace is off
11010        editor.handle_input(" :wave", window, cx);
11011        assert_eq!(
11012            editor.text(cx),
11013            "Hello 👋 😄👋:1: Test:wave: :wave".unindent()
11014        );
11015
11016        editor.handle_input(":", window, cx);
11017        assert_eq!(
11018            editor.text(cx),
11019            "Hello 👋 😄👋:1: Test:wave: :wave:".unindent()
11020        );
11021    });
11022}
11023
11024#[gpui::test]
11025async fn test_snippet_placeholder_choices(cx: &mut TestAppContext) {
11026    init_test(cx, |_| {});
11027
11028    let (text, insertion_ranges) = marked_text_ranges(
11029        indoc! {"
11030            ˇ
11031        "},
11032        false,
11033    );
11034
11035    let buffer = cx.update(|cx| MultiBuffer::build_simple(&text, cx));
11036    let (editor, cx) = cx.add_window_view(|window, cx| build_editor(buffer, window, cx));
11037
11038    _ = editor.update_in(cx, |editor, window, cx| {
11039        let snippet = Snippet::parse("type ${1|,i32,u32|} = $2").unwrap();
11040
11041        editor
11042            .insert_snippet(&insertion_ranges, snippet, window, cx)
11043            .unwrap();
11044
11045        fn assert(editor: &mut Editor, cx: &mut Context<Editor>, marked_text: &str) {
11046            let (expected_text, selection_ranges) = marked_text_ranges(marked_text, false);
11047            assert_eq!(editor.text(cx), expected_text);
11048            assert_eq!(
11049                editor
11050                    .selections
11051                    .ranges::<usize>(&editor.display_snapshot(cx)),
11052                selection_ranges
11053            );
11054        }
11055
11056        assert(
11057            editor,
11058            cx,
11059            indoc! {"
11060            type «» =•
11061            "},
11062        );
11063
11064        assert!(editor.context_menu_visible(), "There should be a matches");
11065    });
11066}
11067
11068#[gpui::test]
11069async fn test_snippets(cx: &mut TestAppContext) {
11070    init_test(cx, |_| {});
11071
11072    let mut cx = EditorTestContext::new(cx).await;
11073
11074    cx.set_state(indoc! {"
11075        a.ˇ b
11076        a.ˇ b
11077        a.ˇ b
11078    "});
11079
11080    cx.update_editor(|editor, window, cx| {
11081        let snippet = Snippet::parse("f(${1:one}, ${2:two}, ${1:three})$0").unwrap();
11082        let insertion_ranges = editor
11083            .selections
11084            .all(&editor.display_snapshot(cx))
11085            .iter()
11086            .map(|s| s.range())
11087            .collect::<Vec<_>>();
11088        editor
11089            .insert_snippet(&insertion_ranges, snippet, window, cx)
11090            .unwrap();
11091    });
11092
11093    cx.assert_editor_state(indoc! {"
11094        a.f(«oneˇ», two, «threeˇ») b
11095        a.f(«oneˇ», two, «threeˇ») b
11096        a.f(«oneˇ», two, «threeˇ») b
11097    "});
11098
11099    // Can't move earlier than the first tab stop
11100    cx.update_editor(|editor, window, cx| {
11101        assert!(!editor.move_to_prev_snippet_tabstop(window, cx))
11102    });
11103    cx.assert_editor_state(indoc! {"
11104        a.f(«oneˇ», two, «threeˇ») b
11105        a.f(«oneˇ», two, «threeˇ») b
11106        a.f(«oneˇ», two, «threeˇ») b
11107    "});
11108
11109    cx.update_editor(|editor, window, cx| assert!(editor.move_to_next_snippet_tabstop(window, cx)));
11110    cx.assert_editor_state(indoc! {"
11111        a.f(one, «twoˇ», three) b
11112        a.f(one, «twoˇ», three) b
11113        a.f(one, «twoˇ», three) b
11114    "});
11115
11116    cx.update_editor(|editor, window, cx| assert!(editor.move_to_prev_snippet_tabstop(window, cx)));
11117    cx.assert_editor_state(indoc! {"
11118        a.f(«oneˇ», two, «threeˇ») b
11119        a.f(«oneˇ», two, «threeˇ») b
11120        a.f(«oneˇ», two, «threeˇ») b
11121    "});
11122
11123    cx.update_editor(|editor, window, cx| assert!(editor.move_to_next_snippet_tabstop(window, cx)));
11124    cx.assert_editor_state(indoc! {"
11125        a.f(one, «twoˇ», three) b
11126        a.f(one, «twoˇ», three) b
11127        a.f(one, «twoˇ», three) b
11128    "});
11129    cx.update_editor(|editor, window, cx| assert!(editor.move_to_next_snippet_tabstop(window, cx)));
11130    cx.assert_editor_state(indoc! {"
11131        a.f(one, two, three)ˇ b
11132        a.f(one, two, three)ˇ b
11133        a.f(one, two, three)ˇ b
11134    "});
11135
11136    // As soon as the last tab stop is reached, snippet state is gone
11137    cx.update_editor(|editor, window, cx| {
11138        assert!(!editor.move_to_prev_snippet_tabstop(window, cx))
11139    });
11140    cx.assert_editor_state(indoc! {"
11141        a.f(one, two, three)ˇ b
11142        a.f(one, two, three)ˇ b
11143        a.f(one, two, three)ˇ b
11144    "});
11145}
11146
11147#[gpui::test]
11148async fn test_snippet_indentation(cx: &mut TestAppContext) {
11149    init_test(cx, |_| {});
11150
11151    let mut cx = EditorTestContext::new(cx).await;
11152
11153    cx.update_editor(|editor, window, cx| {
11154        let snippet = Snippet::parse(indoc! {"
11155            /*
11156             * Multiline comment with leading indentation
11157             *
11158             * $1
11159             */
11160            $0"})
11161        .unwrap();
11162        let insertion_ranges = editor
11163            .selections
11164            .all(&editor.display_snapshot(cx))
11165            .iter()
11166            .map(|s| s.range())
11167            .collect::<Vec<_>>();
11168        editor
11169            .insert_snippet(&insertion_ranges, snippet, window, cx)
11170            .unwrap();
11171    });
11172
11173    cx.assert_editor_state(indoc! {"
11174        /*
11175         * Multiline comment with leading indentation
11176         *
11177         * ˇ
11178         */
11179    "});
11180
11181    cx.update_editor(|editor, window, cx| assert!(editor.move_to_next_snippet_tabstop(window, cx)));
11182    cx.assert_editor_state(indoc! {"
11183        /*
11184         * Multiline comment with leading indentation
11185         *
11186         *•
11187         */
11188        ˇ"});
11189}
11190
11191#[gpui::test]
11192async fn test_document_format_during_save(cx: &mut TestAppContext) {
11193    init_test(cx, |_| {});
11194
11195    let fs = FakeFs::new(cx.executor());
11196    fs.insert_file(path!("/file.rs"), Default::default()).await;
11197
11198    let project = Project::test(fs, [path!("/file.rs").as_ref()], cx).await;
11199
11200    let language_registry = project.read_with(cx, |project, _| project.languages().clone());
11201    language_registry.add(rust_lang());
11202    let mut fake_servers = language_registry.register_fake_lsp(
11203        "Rust",
11204        FakeLspAdapter {
11205            capabilities: lsp::ServerCapabilities {
11206                document_formatting_provider: Some(lsp::OneOf::Left(true)),
11207                ..Default::default()
11208            },
11209            ..Default::default()
11210        },
11211    );
11212
11213    let buffer = project
11214        .update(cx, |project, cx| {
11215            project.open_local_buffer(path!("/file.rs"), cx)
11216        })
11217        .await
11218        .unwrap();
11219
11220    let buffer = cx.new(|cx| MultiBuffer::singleton(buffer, cx));
11221    let (editor, cx) = cx.add_window_view(|window, cx| {
11222        build_editor_with_project(project.clone(), buffer, window, cx)
11223    });
11224    editor.update_in(cx, |editor, window, cx| {
11225        editor.set_text("one\ntwo\nthree\n", window, cx)
11226    });
11227    assert!(cx.read(|cx| editor.is_dirty(cx)));
11228
11229    cx.executor().start_waiting();
11230    let fake_server = fake_servers.next().await.unwrap();
11231
11232    {
11233        fake_server.set_request_handler::<lsp::request::Formatting, _, _>(
11234            move |params, _| async move {
11235                assert_eq!(
11236                    params.text_document.uri,
11237                    lsp::Uri::from_file_path(path!("/file.rs")).unwrap()
11238                );
11239                assert_eq!(params.options.tab_size, 4);
11240                Ok(Some(vec![lsp::TextEdit::new(
11241                    lsp::Range::new(lsp::Position::new(0, 3), lsp::Position::new(1, 0)),
11242                    ", ".to_string(),
11243                )]))
11244            },
11245        );
11246        let save = editor
11247            .update_in(cx, |editor, window, cx| {
11248                editor.save(
11249                    SaveOptions {
11250                        format: true,
11251                        autosave: false,
11252                    },
11253                    project.clone(),
11254                    window,
11255                    cx,
11256                )
11257            })
11258            .unwrap();
11259        cx.executor().start_waiting();
11260        save.await;
11261
11262        assert_eq!(
11263            editor.update(cx, |editor, cx| editor.text(cx)),
11264            "one, two\nthree\n"
11265        );
11266        assert!(!cx.read(|cx| editor.is_dirty(cx)));
11267    }
11268
11269    {
11270        editor.update_in(cx, |editor, window, cx| {
11271            editor.set_text("one\ntwo\nthree\n", window, cx)
11272        });
11273        assert!(cx.read(|cx| editor.is_dirty(cx)));
11274
11275        // Ensure we can still save even if formatting hangs.
11276        fake_server.set_request_handler::<lsp::request::Formatting, _, _>(
11277            move |params, _| async move {
11278                assert_eq!(
11279                    params.text_document.uri,
11280                    lsp::Uri::from_file_path(path!("/file.rs")).unwrap()
11281                );
11282                futures::future::pending::<()>().await;
11283                unreachable!()
11284            },
11285        );
11286        let save = editor
11287            .update_in(cx, |editor, window, cx| {
11288                editor.save(
11289                    SaveOptions {
11290                        format: true,
11291                        autosave: false,
11292                    },
11293                    project.clone(),
11294                    window,
11295                    cx,
11296                )
11297            })
11298            .unwrap();
11299        cx.executor().advance_clock(super::FORMAT_TIMEOUT);
11300        cx.executor().start_waiting();
11301        save.await;
11302        assert_eq!(
11303            editor.update(cx, |editor, cx| editor.text(cx)),
11304            "one\ntwo\nthree\n"
11305        );
11306    }
11307
11308    // Set rust language override and assert overridden tabsize is sent to language server
11309    update_test_language_settings(cx, |settings| {
11310        settings.languages.0.insert(
11311            "Rust".into(),
11312            LanguageSettingsContent {
11313                tab_size: NonZeroU32::new(8),
11314                ..Default::default()
11315            },
11316        );
11317    });
11318
11319    {
11320        editor.update_in(cx, |editor, window, cx| {
11321            editor.set_text("somehting_new\n", window, cx)
11322        });
11323        assert!(cx.read(|cx| editor.is_dirty(cx)));
11324        let _formatting_request_signal = fake_server
11325            .set_request_handler::<lsp::request::Formatting, _, _>(move |params, _| async move {
11326                assert_eq!(
11327                    params.text_document.uri,
11328                    lsp::Uri::from_file_path(path!("/file.rs")).unwrap()
11329                );
11330                assert_eq!(params.options.tab_size, 8);
11331                Ok(Some(vec![]))
11332            });
11333        let save = editor
11334            .update_in(cx, |editor, window, cx| {
11335                editor.save(
11336                    SaveOptions {
11337                        format: true,
11338                        autosave: false,
11339                    },
11340                    project.clone(),
11341                    window,
11342                    cx,
11343                )
11344            })
11345            .unwrap();
11346        cx.executor().start_waiting();
11347        save.await;
11348    }
11349}
11350
11351#[gpui::test]
11352async fn test_redo_after_noop_format(cx: &mut TestAppContext) {
11353    init_test(cx, |settings| {
11354        settings.defaults.ensure_final_newline_on_save = Some(false);
11355    });
11356
11357    let fs = FakeFs::new(cx.executor());
11358    fs.insert_file(path!("/file.txt"), "foo".into()).await;
11359
11360    let project = Project::test(fs, [path!("/file.txt").as_ref()], cx).await;
11361
11362    let buffer = project
11363        .update(cx, |project, cx| {
11364            project.open_local_buffer(path!("/file.txt"), cx)
11365        })
11366        .await
11367        .unwrap();
11368
11369    let buffer = cx.new(|cx| MultiBuffer::singleton(buffer, cx));
11370    let (editor, cx) = cx.add_window_view(|window, cx| {
11371        build_editor_with_project(project.clone(), buffer, window, cx)
11372    });
11373    editor.update_in(cx, |editor, window, cx| {
11374        editor.change_selections(SelectionEffects::default(), window, cx, |s| {
11375            s.select_ranges([0..0])
11376        });
11377    });
11378    assert!(!cx.read(|cx| editor.is_dirty(cx)));
11379
11380    editor.update_in(cx, |editor, window, cx| {
11381        editor.handle_input("\n", window, cx)
11382    });
11383    cx.run_until_parked();
11384    save(&editor, &project, cx).await;
11385    assert_eq!("\nfoo", editor.read_with(cx, |editor, cx| editor.text(cx)));
11386
11387    editor.update_in(cx, |editor, window, cx| {
11388        editor.undo(&Default::default(), window, cx);
11389    });
11390    save(&editor, &project, cx).await;
11391    assert_eq!("foo", editor.read_with(cx, |editor, cx| editor.text(cx)));
11392
11393    editor.update_in(cx, |editor, window, cx| {
11394        editor.redo(&Default::default(), window, cx);
11395    });
11396    cx.run_until_parked();
11397    assert_eq!("\nfoo", editor.read_with(cx, |editor, cx| editor.text(cx)));
11398
11399    async fn save(editor: &Entity<Editor>, project: &Entity<Project>, cx: &mut VisualTestContext) {
11400        let save = editor
11401            .update_in(cx, |editor, window, cx| {
11402                editor.save(
11403                    SaveOptions {
11404                        format: true,
11405                        autosave: false,
11406                    },
11407                    project.clone(),
11408                    window,
11409                    cx,
11410                )
11411            })
11412            .unwrap();
11413        cx.executor().start_waiting();
11414        save.await;
11415        assert!(!cx.read(|cx| editor.is_dirty(cx)));
11416    }
11417}
11418
11419#[gpui::test]
11420async fn test_multibuffer_format_during_save(cx: &mut TestAppContext) {
11421    init_test(cx, |_| {});
11422
11423    let cols = 4;
11424    let rows = 10;
11425    let sample_text_1 = sample_text(rows, cols, 'a');
11426    assert_eq!(
11427        sample_text_1,
11428        "aaaa\nbbbb\ncccc\ndddd\neeee\nffff\ngggg\nhhhh\niiii\njjjj"
11429    );
11430    let sample_text_2 = sample_text(rows, cols, 'l');
11431    assert_eq!(
11432        sample_text_2,
11433        "llll\nmmmm\nnnnn\noooo\npppp\nqqqq\nrrrr\nssss\ntttt\nuuuu"
11434    );
11435    let sample_text_3 = sample_text(rows, cols, 'v');
11436    assert_eq!(
11437        sample_text_3,
11438        "vvvv\nwwww\nxxxx\nyyyy\nzzzz\n{{{{\n||||\n}}}}\n~~~~\n\u{7f}\u{7f}\u{7f}\u{7f}"
11439    );
11440
11441    let fs = FakeFs::new(cx.executor());
11442    fs.insert_tree(
11443        path!("/a"),
11444        json!({
11445            "main.rs": sample_text_1,
11446            "other.rs": sample_text_2,
11447            "lib.rs": sample_text_3,
11448        }),
11449    )
11450    .await;
11451
11452    let project = Project::test(fs, [path!("/a").as_ref()], cx).await;
11453    let workspace = cx.add_window(|window, cx| Workspace::test_new(project.clone(), window, cx));
11454    let cx = &mut VisualTestContext::from_window(*workspace.deref(), cx);
11455
11456    let language_registry = project.read_with(cx, |project, _| project.languages().clone());
11457    language_registry.add(rust_lang());
11458    let mut fake_servers = language_registry.register_fake_lsp(
11459        "Rust",
11460        FakeLspAdapter {
11461            capabilities: lsp::ServerCapabilities {
11462                document_formatting_provider: Some(lsp::OneOf::Left(true)),
11463                ..Default::default()
11464            },
11465            ..Default::default()
11466        },
11467    );
11468
11469    let worktree = project.update(cx, |project, cx| {
11470        let mut worktrees = project.worktrees(cx).collect::<Vec<_>>();
11471        assert_eq!(worktrees.len(), 1);
11472        worktrees.pop().unwrap()
11473    });
11474    let worktree_id = worktree.update(cx, |worktree, _| worktree.id());
11475
11476    let buffer_1 = project
11477        .update(cx, |project, cx| {
11478            project.open_buffer((worktree_id, rel_path("main.rs")), cx)
11479        })
11480        .await
11481        .unwrap();
11482    let buffer_2 = project
11483        .update(cx, |project, cx| {
11484            project.open_buffer((worktree_id, rel_path("other.rs")), cx)
11485        })
11486        .await
11487        .unwrap();
11488    let buffer_3 = project
11489        .update(cx, |project, cx| {
11490            project.open_buffer((worktree_id, rel_path("lib.rs")), cx)
11491        })
11492        .await
11493        .unwrap();
11494
11495    let multi_buffer = cx.new(|cx| {
11496        let mut multi_buffer = MultiBuffer::new(ReadWrite);
11497        multi_buffer.push_excerpts(
11498            buffer_1.clone(),
11499            [
11500                ExcerptRange::new(Point::new(0, 0)..Point::new(3, 0)),
11501                ExcerptRange::new(Point::new(5, 0)..Point::new(7, 0)),
11502                ExcerptRange::new(Point::new(9, 0)..Point::new(10, 4)),
11503            ],
11504            cx,
11505        );
11506        multi_buffer.push_excerpts(
11507            buffer_2.clone(),
11508            [
11509                ExcerptRange::new(Point::new(0, 0)..Point::new(3, 0)),
11510                ExcerptRange::new(Point::new(5, 0)..Point::new(7, 0)),
11511                ExcerptRange::new(Point::new(9, 0)..Point::new(10, 4)),
11512            ],
11513            cx,
11514        );
11515        multi_buffer.push_excerpts(
11516            buffer_3.clone(),
11517            [
11518                ExcerptRange::new(Point::new(0, 0)..Point::new(3, 0)),
11519                ExcerptRange::new(Point::new(5, 0)..Point::new(7, 0)),
11520                ExcerptRange::new(Point::new(9, 0)..Point::new(10, 4)),
11521            ],
11522            cx,
11523        );
11524        multi_buffer
11525    });
11526    let multi_buffer_editor = cx.new_window_entity(|window, cx| {
11527        Editor::new(
11528            EditorMode::full(),
11529            multi_buffer,
11530            Some(project.clone()),
11531            window,
11532            cx,
11533        )
11534    });
11535
11536    multi_buffer_editor.update_in(cx, |editor, window, cx| {
11537        editor.change_selections(
11538            SelectionEffects::scroll(Autoscroll::Next),
11539            window,
11540            cx,
11541            |s| s.select_ranges(Some(1..2)),
11542        );
11543        editor.insert("|one|two|three|", window, cx);
11544    });
11545    assert!(cx.read(|cx| multi_buffer_editor.is_dirty(cx)));
11546    multi_buffer_editor.update_in(cx, |editor, window, cx| {
11547        editor.change_selections(
11548            SelectionEffects::scroll(Autoscroll::Next),
11549            window,
11550            cx,
11551            |s| s.select_ranges(Some(60..70)),
11552        );
11553        editor.insert("|four|five|six|", window, cx);
11554    });
11555    assert!(cx.read(|cx| multi_buffer_editor.is_dirty(cx)));
11556
11557    // First two buffers should be edited, but not the third one.
11558    assert_eq!(
11559        multi_buffer_editor.update(cx, |editor, cx| editor.text(cx)),
11560        "a|one|two|three|aa\nbbbb\ncccc\n\nffff\ngggg\n\njjjj\nllll\nmmmm\nnnnn|four|five|six|\nr\n\nuuuu\nvvvv\nwwww\nxxxx\n\n{{{{\n||||\n\n\u{7f}\u{7f}\u{7f}\u{7f}",
11561    );
11562    buffer_1.update(cx, |buffer, _| {
11563        assert!(buffer.is_dirty());
11564        assert_eq!(
11565            buffer.text(),
11566            "a|one|two|three|aa\nbbbb\ncccc\ndddd\neeee\nffff\ngggg\nhhhh\niiii\njjjj",
11567        )
11568    });
11569    buffer_2.update(cx, |buffer, _| {
11570        assert!(buffer.is_dirty());
11571        assert_eq!(
11572            buffer.text(),
11573            "llll\nmmmm\nnnnn|four|five|six|oooo\npppp\nr\nssss\ntttt\nuuuu",
11574        )
11575    });
11576    buffer_3.update(cx, |buffer, _| {
11577        assert!(!buffer.is_dirty());
11578        assert_eq!(buffer.text(), sample_text_3,)
11579    });
11580    cx.executor().run_until_parked();
11581
11582    cx.executor().start_waiting();
11583    let save = multi_buffer_editor
11584        .update_in(cx, |editor, window, cx| {
11585            editor.save(
11586                SaveOptions {
11587                    format: true,
11588                    autosave: false,
11589                },
11590                project.clone(),
11591                window,
11592                cx,
11593            )
11594        })
11595        .unwrap();
11596
11597    let fake_server = fake_servers.next().await.unwrap();
11598    fake_server
11599        .server
11600        .on_request::<lsp::request::Formatting, _, _>(move |params, _| async move {
11601            Ok(Some(vec![lsp::TextEdit::new(
11602                lsp::Range::new(lsp::Position::new(0, 3), lsp::Position::new(1, 0)),
11603                format!("[{} formatted]", params.text_document.uri),
11604            )]))
11605        })
11606        .detach();
11607    save.await;
11608
11609    // After multibuffer saving, only first two buffers should be reformatted, but not the third one (as it was not dirty).
11610    assert!(cx.read(|cx| !multi_buffer_editor.is_dirty(cx)));
11611    assert_eq!(
11612        multi_buffer_editor.update(cx, |editor, cx| editor.text(cx)),
11613        uri!(
11614            "a|o[file:///a/main.rs formatted]bbbb\ncccc\n\nffff\ngggg\n\njjjj\n\nlll[file:///a/other.rs formatted]mmmm\nnnnn|four|five|six|\nr\n\nuuuu\n\nvvvv\nwwww\nxxxx\n\n{{{{\n||||\n\n\u{7f}\u{7f}\u{7f}\u{7f}"
11615        ),
11616    );
11617    buffer_1.update(cx, |buffer, _| {
11618        assert!(!buffer.is_dirty());
11619        assert_eq!(
11620            buffer.text(),
11621            uri!("a|o[file:///a/main.rs formatted]bbbb\ncccc\ndddd\neeee\nffff\ngggg\nhhhh\niiii\njjjj\n"),
11622        )
11623    });
11624    buffer_2.update(cx, |buffer, _| {
11625        assert!(!buffer.is_dirty());
11626        assert_eq!(
11627            buffer.text(),
11628            uri!("lll[file:///a/other.rs formatted]mmmm\nnnnn|four|five|six|oooo\npppp\nr\nssss\ntttt\nuuuu\n"),
11629        )
11630    });
11631    buffer_3.update(cx, |buffer, _| {
11632        assert!(!buffer.is_dirty());
11633        assert_eq!(buffer.text(), sample_text_3,)
11634    });
11635}
11636
11637#[gpui::test]
11638async fn test_autosave_with_dirty_buffers(cx: &mut TestAppContext) {
11639    init_test(cx, |_| {});
11640
11641    let fs = FakeFs::new(cx.executor());
11642    fs.insert_tree(
11643        path!("/dir"),
11644        json!({
11645            "file1.rs": "fn main() { println!(\"hello\"); }",
11646            "file2.rs": "fn test() { println!(\"test\"); }",
11647            "file3.rs": "fn other() { println!(\"other\"); }\n",
11648        }),
11649    )
11650    .await;
11651
11652    let project = Project::test(fs.clone(), [path!("/dir").as_ref()], cx).await;
11653    let workspace = cx.add_window(|window, cx| Workspace::test_new(project.clone(), window, cx));
11654    let cx = &mut VisualTestContext::from_window(*workspace.deref(), cx);
11655
11656    let language_registry = project.read_with(cx, |project, _| project.languages().clone());
11657    language_registry.add(rust_lang());
11658
11659    let worktree = project.update(cx, |project, cx| project.worktrees(cx).next().unwrap());
11660    let worktree_id = worktree.update(cx, |worktree, _| worktree.id());
11661
11662    // Open three buffers
11663    let buffer_1 = project
11664        .update(cx, |project, cx| {
11665            project.open_buffer((worktree_id, rel_path("file1.rs")), cx)
11666        })
11667        .await
11668        .unwrap();
11669    let buffer_2 = project
11670        .update(cx, |project, cx| {
11671            project.open_buffer((worktree_id, rel_path("file2.rs")), cx)
11672        })
11673        .await
11674        .unwrap();
11675    let buffer_3 = project
11676        .update(cx, |project, cx| {
11677            project.open_buffer((worktree_id, rel_path("file3.rs")), cx)
11678        })
11679        .await
11680        .unwrap();
11681
11682    // Create a multi-buffer with all three buffers
11683    let multi_buffer = cx.new(|cx| {
11684        let mut multi_buffer = MultiBuffer::new(ReadWrite);
11685        multi_buffer.push_excerpts(
11686            buffer_1.clone(),
11687            [ExcerptRange::new(Point::new(0, 0)..Point::new(1, 0))],
11688            cx,
11689        );
11690        multi_buffer.push_excerpts(
11691            buffer_2.clone(),
11692            [ExcerptRange::new(Point::new(0, 0)..Point::new(1, 0))],
11693            cx,
11694        );
11695        multi_buffer.push_excerpts(
11696            buffer_3.clone(),
11697            [ExcerptRange::new(Point::new(0, 0)..Point::new(1, 0))],
11698            cx,
11699        );
11700        multi_buffer
11701    });
11702
11703    let editor = cx.new_window_entity(|window, cx| {
11704        Editor::new(
11705            EditorMode::full(),
11706            multi_buffer,
11707            Some(project.clone()),
11708            window,
11709            cx,
11710        )
11711    });
11712
11713    // Edit only the first buffer
11714    editor.update_in(cx, |editor, window, cx| {
11715        editor.change_selections(
11716            SelectionEffects::scroll(Autoscroll::Next),
11717            window,
11718            cx,
11719            |s| s.select_ranges(Some(10..10)),
11720        );
11721        editor.insert("// edited", window, cx);
11722    });
11723
11724    // Verify that only buffer 1 is dirty
11725    buffer_1.update(cx, |buffer, _| assert!(buffer.is_dirty()));
11726    buffer_2.update(cx, |buffer, _| assert!(!buffer.is_dirty()));
11727    buffer_3.update(cx, |buffer, _| assert!(!buffer.is_dirty()));
11728
11729    // Get write counts after file creation (files were created with initial content)
11730    // We expect each file to have been written once during creation
11731    let write_count_after_creation_1 = fs.write_count_for_path(path!("/dir/file1.rs"));
11732    let write_count_after_creation_2 = fs.write_count_for_path(path!("/dir/file2.rs"));
11733    let write_count_after_creation_3 = fs.write_count_for_path(path!("/dir/file3.rs"));
11734
11735    // Perform autosave
11736    let save_task = editor.update_in(cx, |editor, window, cx| {
11737        editor.save(
11738            SaveOptions {
11739                format: true,
11740                autosave: true,
11741            },
11742            project.clone(),
11743            window,
11744            cx,
11745        )
11746    });
11747    save_task.await.unwrap();
11748
11749    // Only the dirty buffer should have been saved
11750    assert_eq!(
11751        fs.write_count_for_path(path!("/dir/file1.rs")) - write_count_after_creation_1,
11752        1,
11753        "Buffer 1 was dirty, so it should have been written once during autosave"
11754    );
11755    assert_eq!(
11756        fs.write_count_for_path(path!("/dir/file2.rs")) - write_count_after_creation_2,
11757        0,
11758        "Buffer 2 was clean, so it should not have been written during autosave"
11759    );
11760    assert_eq!(
11761        fs.write_count_for_path(path!("/dir/file3.rs")) - write_count_after_creation_3,
11762        0,
11763        "Buffer 3 was clean, so it should not have been written during autosave"
11764    );
11765
11766    // Verify buffer states after autosave
11767    buffer_1.update(cx, |buffer, _| assert!(!buffer.is_dirty()));
11768    buffer_2.update(cx, |buffer, _| assert!(!buffer.is_dirty()));
11769    buffer_3.update(cx, |buffer, _| assert!(!buffer.is_dirty()));
11770
11771    // Now perform a manual save (format = true)
11772    let save_task = editor.update_in(cx, |editor, window, cx| {
11773        editor.save(
11774            SaveOptions {
11775                format: true,
11776                autosave: false,
11777            },
11778            project.clone(),
11779            window,
11780            cx,
11781        )
11782    });
11783    save_task.await.unwrap();
11784
11785    // During manual save, clean buffers don't get written to disk
11786    // They just get did_save called for language server notifications
11787    assert_eq!(
11788        fs.write_count_for_path(path!("/dir/file1.rs")) - write_count_after_creation_1,
11789        1,
11790        "Buffer 1 should only have been written once total (during autosave, not manual save)"
11791    );
11792    assert_eq!(
11793        fs.write_count_for_path(path!("/dir/file2.rs")) - write_count_after_creation_2,
11794        0,
11795        "Buffer 2 should not have been written at all"
11796    );
11797    assert_eq!(
11798        fs.write_count_for_path(path!("/dir/file3.rs")) - write_count_after_creation_3,
11799        0,
11800        "Buffer 3 should not have been written at all"
11801    );
11802}
11803
11804async fn setup_range_format_test(
11805    cx: &mut TestAppContext,
11806) -> (
11807    Entity<Project>,
11808    Entity<Editor>,
11809    &mut gpui::VisualTestContext,
11810    lsp::FakeLanguageServer,
11811) {
11812    init_test(cx, |_| {});
11813
11814    let fs = FakeFs::new(cx.executor());
11815    fs.insert_file(path!("/file.rs"), Default::default()).await;
11816
11817    let project = Project::test(fs, [path!("/").as_ref()], cx).await;
11818
11819    let language_registry = project.read_with(cx, |project, _| project.languages().clone());
11820    language_registry.add(rust_lang());
11821    let mut fake_servers = language_registry.register_fake_lsp(
11822        "Rust",
11823        FakeLspAdapter {
11824            capabilities: lsp::ServerCapabilities {
11825                document_range_formatting_provider: Some(lsp::OneOf::Left(true)),
11826                ..lsp::ServerCapabilities::default()
11827            },
11828            ..FakeLspAdapter::default()
11829        },
11830    );
11831
11832    let buffer = project
11833        .update(cx, |project, cx| {
11834            project.open_local_buffer(path!("/file.rs"), cx)
11835        })
11836        .await
11837        .unwrap();
11838
11839    let buffer = cx.new(|cx| MultiBuffer::singleton(buffer, cx));
11840    let (editor, cx) = cx.add_window_view(|window, cx| {
11841        build_editor_with_project(project.clone(), buffer, window, cx)
11842    });
11843
11844    cx.executor().start_waiting();
11845    let fake_server = fake_servers.next().await.unwrap();
11846
11847    (project, editor, cx, fake_server)
11848}
11849
11850#[gpui::test]
11851async fn test_range_format_on_save_success(cx: &mut TestAppContext) {
11852    let (project, editor, cx, fake_server) = setup_range_format_test(cx).await;
11853
11854    editor.update_in(cx, |editor, window, cx| {
11855        editor.set_text("one\ntwo\nthree\n", window, cx)
11856    });
11857    assert!(cx.read(|cx| editor.is_dirty(cx)));
11858
11859    let save = editor
11860        .update_in(cx, |editor, window, cx| {
11861            editor.save(
11862                SaveOptions {
11863                    format: true,
11864                    autosave: false,
11865                },
11866                project.clone(),
11867                window,
11868                cx,
11869            )
11870        })
11871        .unwrap();
11872    fake_server
11873        .set_request_handler::<lsp::request::RangeFormatting, _, _>(move |params, _| async move {
11874            assert_eq!(
11875                params.text_document.uri,
11876                lsp::Uri::from_file_path(path!("/file.rs")).unwrap()
11877            );
11878            assert_eq!(params.options.tab_size, 4);
11879            Ok(Some(vec![lsp::TextEdit::new(
11880                lsp::Range::new(lsp::Position::new(0, 3), lsp::Position::new(1, 0)),
11881                ", ".to_string(),
11882            )]))
11883        })
11884        .next()
11885        .await;
11886    cx.executor().start_waiting();
11887    save.await;
11888    assert_eq!(
11889        editor.update(cx, |editor, cx| editor.text(cx)),
11890        "one, two\nthree\n"
11891    );
11892    assert!(!cx.read(|cx| editor.is_dirty(cx)));
11893}
11894
11895#[gpui::test]
11896async fn test_range_format_on_save_timeout(cx: &mut TestAppContext) {
11897    let (project, editor, cx, fake_server) = setup_range_format_test(cx).await;
11898
11899    editor.update_in(cx, |editor, window, cx| {
11900        editor.set_text("one\ntwo\nthree\n", window, cx)
11901    });
11902    assert!(cx.read(|cx| editor.is_dirty(cx)));
11903
11904    // Test that save still works when formatting hangs
11905    fake_server.set_request_handler::<lsp::request::RangeFormatting, _, _>(
11906        move |params, _| async move {
11907            assert_eq!(
11908                params.text_document.uri,
11909                lsp::Uri::from_file_path(path!("/file.rs")).unwrap()
11910            );
11911            futures::future::pending::<()>().await;
11912            unreachable!()
11913        },
11914    );
11915    let save = editor
11916        .update_in(cx, |editor, window, cx| {
11917            editor.save(
11918                SaveOptions {
11919                    format: true,
11920                    autosave: false,
11921                },
11922                project.clone(),
11923                window,
11924                cx,
11925            )
11926        })
11927        .unwrap();
11928    cx.executor().advance_clock(super::FORMAT_TIMEOUT);
11929    cx.executor().start_waiting();
11930    save.await;
11931    assert_eq!(
11932        editor.update(cx, |editor, cx| editor.text(cx)),
11933        "one\ntwo\nthree\n"
11934    );
11935    assert!(!cx.read(|cx| editor.is_dirty(cx)));
11936}
11937
11938#[gpui::test]
11939async fn test_range_format_not_called_for_clean_buffer(cx: &mut TestAppContext) {
11940    let (project, editor, cx, fake_server) = setup_range_format_test(cx).await;
11941
11942    // Buffer starts clean, no formatting should be requested
11943    let save = editor
11944        .update_in(cx, |editor, window, cx| {
11945            editor.save(
11946                SaveOptions {
11947                    format: false,
11948                    autosave: false,
11949                },
11950                project.clone(),
11951                window,
11952                cx,
11953            )
11954        })
11955        .unwrap();
11956    let _pending_format_request = fake_server
11957        .set_request_handler::<lsp::request::RangeFormatting, _, _>(move |_, _| async move {
11958            panic!("Should not be invoked");
11959        })
11960        .next();
11961    cx.executor().start_waiting();
11962    save.await;
11963    cx.run_until_parked();
11964}
11965
11966#[gpui::test]
11967async fn test_range_format_respects_language_tab_size_override(cx: &mut TestAppContext) {
11968    let (project, editor, cx, fake_server) = setup_range_format_test(cx).await;
11969
11970    // Set Rust language override and assert overridden tabsize is sent to language server
11971    update_test_language_settings(cx, |settings| {
11972        settings.languages.0.insert(
11973            "Rust".into(),
11974            LanguageSettingsContent {
11975                tab_size: NonZeroU32::new(8),
11976                ..Default::default()
11977            },
11978        );
11979    });
11980
11981    editor.update_in(cx, |editor, window, cx| {
11982        editor.set_text("something_new\n", window, cx)
11983    });
11984    assert!(cx.read(|cx| editor.is_dirty(cx)));
11985    let save = editor
11986        .update_in(cx, |editor, window, cx| {
11987            editor.save(
11988                SaveOptions {
11989                    format: true,
11990                    autosave: false,
11991                },
11992                project.clone(),
11993                window,
11994                cx,
11995            )
11996        })
11997        .unwrap();
11998    fake_server
11999        .set_request_handler::<lsp::request::RangeFormatting, _, _>(move |params, _| async move {
12000            assert_eq!(
12001                params.text_document.uri,
12002                lsp::Uri::from_file_path(path!("/file.rs")).unwrap()
12003            );
12004            assert_eq!(params.options.tab_size, 8);
12005            Ok(Some(Vec::new()))
12006        })
12007        .next()
12008        .await;
12009    save.await;
12010}
12011
12012#[gpui::test]
12013async fn test_document_format_manual_trigger(cx: &mut TestAppContext) {
12014    init_test(cx, |settings| {
12015        settings.defaults.formatter = Some(FormatterList::Single(Formatter::LanguageServer(
12016            settings::LanguageServerFormatterSpecifier::Current,
12017        )))
12018    });
12019
12020    let fs = FakeFs::new(cx.executor());
12021    fs.insert_file(path!("/file.rs"), Default::default()).await;
12022
12023    let project = Project::test(fs, [path!("/").as_ref()], cx).await;
12024
12025    let language_registry = project.read_with(cx, |project, _| project.languages().clone());
12026    language_registry.add(Arc::new(Language::new(
12027        LanguageConfig {
12028            name: "Rust".into(),
12029            matcher: LanguageMatcher {
12030                path_suffixes: vec!["rs".to_string()],
12031                ..Default::default()
12032            },
12033            ..LanguageConfig::default()
12034        },
12035        Some(tree_sitter_rust::LANGUAGE.into()),
12036    )));
12037    update_test_language_settings(cx, |settings| {
12038        // Enable Prettier formatting for the same buffer, and ensure
12039        // LSP is called instead of Prettier.
12040        settings.defaults.prettier.get_or_insert_default().allowed = Some(true);
12041    });
12042    let mut fake_servers = language_registry.register_fake_lsp(
12043        "Rust",
12044        FakeLspAdapter {
12045            capabilities: lsp::ServerCapabilities {
12046                document_formatting_provider: Some(lsp::OneOf::Left(true)),
12047                ..Default::default()
12048            },
12049            ..Default::default()
12050        },
12051    );
12052
12053    let buffer = project
12054        .update(cx, |project, cx| {
12055            project.open_local_buffer(path!("/file.rs"), cx)
12056        })
12057        .await
12058        .unwrap();
12059
12060    let buffer = cx.new(|cx| MultiBuffer::singleton(buffer, cx));
12061    let (editor, cx) = cx.add_window_view(|window, cx| {
12062        build_editor_with_project(project.clone(), buffer, window, cx)
12063    });
12064    editor.update_in(cx, |editor, window, cx| {
12065        editor.set_text("one\ntwo\nthree\n", window, cx)
12066    });
12067
12068    cx.executor().start_waiting();
12069    let fake_server = fake_servers.next().await.unwrap();
12070
12071    let format = editor
12072        .update_in(cx, |editor, window, cx| {
12073            editor.perform_format(
12074                project.clone(),
12075                FormatTrigger::Manual,
12076                FormatTarget::Buffers(editor.buffer().read(cx).all_buffers()),
12077                window,
12078                cx,
12079            )
12080        })
12081        .unwrap();
12082    fake_server
12083        .set_request_handler::<lsp::request::Formatting, _, _>(move |params, _| async move {
12084            assert_eq!(
12085                params.text_document.uri,
12086                lsp::Uri::from_file_path(path!("/file.rs")).unwrap()
12087            );
12088            assert_eq!(params.options.tab_size, 4);
12089            Ok(Some(vec![lsp::TextEdit::new(
12090                lsp::Range::new(lsp::Position::new(0, 3), lsp::Position::new(1, 0)),
12091                ", ".to_string(),
12092            )]))
12093        })
12094        .next()
12095        .await;
12096    cx.executor().start_waiting();
12097    format.await;
12098    assert_eq!(
12099        editor.update(cx, |editor, cx| editor.text(cx)),
12100        "one, two\nthree\n"
12101    );
12102
12103    editor.update_in(cx, |editor, window, cx| {
12104        editor.set_text("one\ntwo\nthree\n", window, cx)
12105    });
12106    // Ensure we don't lock if formatting hangs.
12107    fake_server.set_request_handler::<lsp::request::Formatting, _, _>(
12108        move |params, _| async move {
12109            assert_eq!(
12110                params.text_document.uri,
12111                lsp::Uri::from_file_path(path!("/file.rs")).unwrap()
12112            );
12113            futures::future::pending::<()>().await;
12114            unreachable!()
12115        },
12116    );
12117    let format = editor
12118        .update_in(cx, |editor, window, cx| {
12119            editor.perform_format(
12120                project,
12121                FormatTrigger::Manual,
12122                FormatTarget::Buffers(editor.buffer().read(cx).all_buffers()),
12123                window,
12124                cx,
12125            )
12126        })
12127        .unwrap();
12128    cx.executor().advance_clock(super::FORMAT_TIMEOUT);
12129    cx.executor().start_waiting();
12130    format.await;
12131    assert_eq!(
12132        editor.update(cx, |editor, cx| editor.text(cx)),
12133        "one\ntwo\nthree\n"
12134    );
12135}
12136
12137#[gpui::test]
12138async fn test_multiple_formatters(cx: &mut TestAppContext) {
12139    init_test(cx, |settings| {
12140        settings.defaults.remove_trailing_whitespace_on_save = Some(true);
12141        settings.defaults.formatter = Some(FormatterList::Vec(vec![
12142            Formatter::LanguageServer(settings::LanguageServerFormatterSpecifier::Current),
12143            Formatter::CodeAction("code-action-1".into()),
12144            Formatter::CodeAction("code-action-2".into()),
12145        ]))
12146    });
12147
12148    let fs = FakeFs::new(cx.executor());
12149    fs.insert_file(path!("/file.rs"), "one  \ntwo   \nthree".into())
12150        .await;
12151
12152    let project = Project::test(fs, [path!("/").as_ref()], cx).await;
12153    let language_registry = project.read_with(cx, |project, _| project.languages().clone());
12154    language_registry.add(rust_lang());
12155
12156    let mut fake_servers = language_registry.register_fake_lsp(
12157        "Rust",
12158        FakeLspAdapter {
12159            capabilities: lsp::ServerCapabilities {
12160                document_formatting_provider: Some(lsp::OneOf::Left(true)),
12161                execute_command_provider: Some(lsp::ExecuteCommandOptions {
12162                    commands: vec!["the-command-for-code-action-1".into()],
12163                    ..Default::default()
12164                }),
12165                code_action_provider: Some(lsp::CodeActionProviderCapability::Simple(true)),
12166                ..Default::default()
12167            },
12168            ..Default::default()
12169        },
12170    );
12171
12172    let buffer = project
12173        .update(cx, |project, cx| {
12174            project.open_local_buffer(path!("/file.rs"), cx)
12175        })
12176        .await
12177        .unwrap();
12178
12179    let buffer = cx.new(|cx| MultiBuffer::singleton(buffer, cx));
12180    let (editor, cx) = cx.add_window_view(|window, cx| {
12181        build_editor_with_project(project.clone(), buffer, window, cx)
12182    });
12183
12184    cx.executor().start_waiting();
12185
12186    let fake_server = fake_servers.next().await.unwrap();
12187    fake_server.set_request_handler::<lsp::request::Formatting, _, _>(
12188        move |_params, _| async move {
12189            Ok(Some(vec![lsp::TextEdit::new(
12190                lsp::Range::new(lsp::Position::new(0, 0), lsp::Position::new(0, 0)),
12191                "applied-formatting\n".to_string(),
12192            )]))
12193        },
12194    );
12195    fake_server.set_request_handler::<lsp::request::CodeActionRequest, _, _>(
12196        move |params, _| async move {
12197            let requested_code_actions = params.context.only.expect("Expected code action request");
12198            assert_eq!(requested_code_actions.len(), 1);
12199
12200            let uri = lsp::Uri::from_file_path(path!("/file.rs")).unwrap();
12201            let code_action = match requested_code_actions[0].as_str() {
12202                "code-action-1" => lsp::CodeAction {
12203                    kind: Some("code-action-1".into()),
12204                    edit: Some(lsp::WorkspaceEdit::new(
12205                        [(
12206                            uri,
12207                            vec![lsp::TextEdit::new(
12208                                lsp::Range::new(lsp::Position::new(0, 0), lsp::Position::new(0, 0)),
12209                                "applied-code-action-1-edit\n".to_string(),
12210                            )],
12211                        )]
12212                        .into_iter()
12213                        .collect(),
12214                    )),
12215                    command: Some(lsp::Command {
12216                        command: "the-command-for-code-action-1".into(),
12217                        ..Default::default()
12218                    }),
12219                    ..Default::default()
12220                },
12221                "code-action-2" => lsp::CodeAction {
12222                    kind: Some("code-action-2".into()),
12223                    edit: Some(lsp::WorkspaceEdit::new(
12224                        [(
12225                            uri,
12226                            vec![lsp::TextEdit::new(
12227                                lsp::Range::new(lsp::Position::new(0, 0), lsp::Position::new(0, 0)),
12228                                "applied-code-action-2-edit\n".to_string(),
12229                            )],
12230                        )]
12231                        .into_iter()
12232                        .collect(),
12233                    )),
12234                    ..Default::default()
12235                },
12236                req => panic!("Unexpected code action request: {:?}", req),
12237            };
12238            Ok(Some(vec![lsp::CodeActionOrCommand::CodeAction(
12239                code_action,
12240            )]))
12241        },
12242    );
12243
12244    fake_server.set_request_handler::<lsp::request::CodeActionResolveRequest, _, _>({
12245        move |params, _| async move { Ok(params) }
12246    });
12247
12248    let command_lock = Arc::new(futures::lock::Mutex::new(()));
12249    fake_server.set_request_handler::<lsp::request::ExecuteCommand, _, _>({
12250        let fake = fake_server.clone();
12251        let lock = command_lock.clone();
12252        move |params, _| {
12253            assert_eq!(params.command, "the-command-for-code-action-1");
12254            let fake = fake.clone();
12255            let lock = lock.clone();
12256            async move {
12257                lock.lock().await;
12258                fake.server
12259                    .request::<lsp::request::ApplyWorkspaceEdit>(lsp::ApplyWorkspaceEditParams {
12260                        label: None,
12261                        edit: lsp::WorkspaceEdit {
12262                            changes: Some(
12263                                [(
12264                                    lsp::Uri::from_file_path(path!("/file.rs")).unwrap(),
12265                                    vec![lsp::TextEdit {
12266                                        range: lsp::Range::new(
12267                                            lsp::Position::new(0, 0),
12268                                            lsp::Position::new(0, 0),
12269                                        ),
12270                                        new_text: "applied-code-action-1-command\n".into(),
12271                                    }],
12272                                )]
12273                                .into_iter()
12274                                .collect(),
12275                            ),
12276                            ..Default::default()
12277                        },
12278                    })
12279                    .await
12280                    .into_response()
12281                    .unwrap();
12282                Ok(Some(json!(null)))
12283            }
12284        }
12285    });
12286
12287    cx.executor().start_waiting();
12288    editor
12289        .update_in(cx, |editor, window, cx| {
12290            editor.perform_format(
12291                project.clone(),
12292                FormatTrigger::Manual,
12293                FormatTarget::Buffers(editor.buffer().read(cx).all_buffers()),
12294                window,
12295                cx,
12296            )
12297        })
12298        .unwrap()
12299        .await;
12300    editor.update(cx, |editor, cx| {
12301        assert_eq!(
12302            editor.text(cx),
12303            r#"
12304                applied-code-action-2-edit
12305                applied-code-action-1-command
12306                applied-code-action-1-edit
12307                applied-formatting
12308                one
12309                two
12310                three
12311            "#
12312            .unindent()
12313        );
12314    });
12315
12316    editor.update_in(cx, |editor, window, cx| {
12317        editor.undo(&Default::default(), window, cx);
12318        assert_eq!(editor.text(cx), "one  \ntwo   \nthree");
12319    });
12320
12321    // Perform a manual edit while waiting for an LSP command
12322    // that's being run as part of a formatting code action.
12323    let lock_guard = command_lock.lock().await;
12324    let format = editor
12325        .update_in(cx, |editor, window, cx| {
12326            editor.perform_format(
12327                project.clone(),
12328                FormatTrigger::Manual,
12329                FormatTarget::Buffers(editor.buffer().read(cx).all_buffers()),
12330                window,
12331                cx,
12332            )
12333        })
12334        .unwrap();
12335    cx.run_until_parked();
12336    editor.update(cx, |editor, cx| {
12337        assert_eq!(
12338            editor.text(cx),
12339            r#"
12340                applied-code-action-1-edit
12341                applied-formatting
12342                one
12343                two
12344                three
12345            "#
12346            .unindent()
12347        );
12348
12349        editor.buffer.update(cx, |buffer, cx| {
12350            let ix = buffer.len(cx);
12351            buffer.edit([(ix..ix, "edited\n")], None, cx);
12352        });
12353    });
12354
12355    // Allow the LSP command to proceed. Because the buffer was edited,
12356    // the second code action will not be run.
12357    drop(lock_guard);
12358    format.await;
12359    editor.update_in(cx, |editor, window, cx| {
12360        assert_eq!(
12361            editor.text(cx),
12362            r#"
12363                applied-code-action-1-command
12364                applied-code-action-1-edit
12365                applied-formatting
12366                one
12367                two
12368                three
12369                edited
12370            "#
12371            .unindent()
12372        );
12373
12374        // The manual edit is undone first, because it is the last thing the user did
12375        // (even though the command completed afterwards).
12376        editor.undo(&Default::default(), window, cx);
12377        assert_eq!(
12378            editor.text(cx),
12379            r#"
12380                applied-code-action-1-command
12381                applied-code-action-1-edit
12382                applied-formatting
12383                one
12384                two
12385                three
12386            "#
12387            .unindent()
12388        );
12389
12390        // All the formatting (including the command, which completed after the manual edit)
12391        // is undone together.
12392        editor.undo(&Default::default(), window, cx);
12393        assert_eq!(editor.text(cx), "one  \ntwo   \nthree");
12394    });
12395}
12396
12397#[gpui::test]
12398async fn test_organize_imports_manual_trigger(cx: &mut TestAppContext) {
12399    init_test(cx, |settings| {
12400        settings.defaults.formatter = Some(FormatterList::Vec(vec![Formatter::LanguageServer(
12401            settings::LanguageServerFormatterSpecifier::Current,
12402        )]))
12403    });
12404
12405    let fs = FakeFs::new(cx.executor());
12406    fs.insert_file(path!("/file.ts"), Default::default()).await;
12407
12408    let project = Project::test(fs, [path!("/").as_ref()], cx).await;
12409
12410    let language_registry = project.read_with(cx, |project, _| project.languages().clone());
12411    language_registry.add(Arc::new(Language::new(
12412        LanguageConfig {
12413            name: "TypeScript".into(),
12414            matcher: LanguageMatcher {
12415                path_suffixes: vec!["ts".to_string()],
12416                ..Default::default()
12417            },
12418            ..LanguageConfig::default()
12419        },
12420        Some(tree_sitter_typescript::LANGUAGE_TYPESCRIPT.into()),
12421    )));
12422    update_test_language_settings(cx, |settings| {
12423        settings.defaults.prettier.get_or_insert_default().allowed = Some(true);
12424    });
12425    let mut fake_servers = language_registry.register_fake_lsp(
12426        "TypeScript",
12427        FakeLspAdapter {
12428            capabilities: lsp::ServerCapabilities {
12429                code_action_provider: Some(lsp::CodeActionProviderCapability::Simple(true)),
12430                ..Default::default()
12431            },
12432            ..Default::default()
12433        },
12434    );
12435
12436    let buffer = project
12437        .update(cx, |project, cx| {
12438            project.open_local_buffer(path!("/file.ts"), cx)
12439        })
12440        .await
12441        .unwrap();
12442
12443    let buffer = cx.new(|cx| MultiBuffer::singleton(buffer, cx));
12444    let (editor, cx) = cx.add_window_view(|window, cx| {
12445        build_editor_with_project(project.clone(), buffer, window, cx)
12446    });
12447    editor.update_in(cx, |editor, window, cx| {
12448        editor.set_text(
12449            "import { a } from 'module';\nimport { b } from 'module';\n\nconst x = a;\n",
12450            window,
12451            cx,
12452        )
12453    });
12454
12455    cx.executor().start_waiting();
12456    let fake_server = fake_servers.next().await.unwrap();
12457
12458    let format = editor
12459        .update_in(cx, |editor, window, cx| {
12460            editor.perform_code_action_kind(
12461                project.clone(),
12462                CodeActionKind::SOURCE_ORGANIZE_IMPORTS,
12463                window,
12464                cx,
12465            )
12466        })
12467        .unwrap();
12468    fake_server
12469        .set_request_handler::<lsp::request::CodeActionRequest, _, _>(move |params, _| async move {
12470            assert_eq!(
12471                params.text_document.uri,
12472                lsp::Uri::from_file_path(path!("/file.ts")).unwrap()
12473            );
12474            Ok(Some(vec![lsp::CodeActionOrCommand::CodeAction(
12475                lsp::CodeAction {
12476                    title: "Organize Imports".to_string(),
12477                    kind: Some(lsp::CodeActionKind::SOURCE_ORGANIZE_IMPORTS),
12478                    edit: Some(lsp::WorkspaceEdit {
12479                        changes: Some(
12480                            [(
12481                                params.text_document.uri.clone(),
12482                                vec![lsp::TextEdit::new(
12483                                    lsp::Range::new(
12484                                        lsp::Position::new(1, 0),
12485                                        lsp::Position::new(2, 0),
12486                                    ),
12487                                    "".to_string(),
12488                                )],
12489                            )]
12490                            .into_iter()
12491                            .collect(),
12492                        ),
12493                        ..Default::default()
12494                    }),
12495                    ..Default::default()
12496                },
12497            )]))
12498        })
12499        .next()
12500        .await;
12501    cx.executor().start_waiting();
12502    format.await;
12503    assert_eq!(
12504        editor.update(cx, |editor, cx| editor.text(cx)),
12505        "import { a } from 'module';\n\nconst x = a;\n"
12506    );
12507
12508    editor.update_in(cx, |editor, window, cx| {
12509        editor.set_text(
12510            "import { a } from 'module';\nimport { b } from 'module';\n\nconst x = a;\n",
12511            window,
12512            cx,
12513        )
12514    });
12515    // Ensure we don't lock if code action hangs.
12516    fake_server.set_request_handler::<lsp::request::CodeActionRequest, _, _>(
12517        move |params, _| async move {
12518            assert_eq!(
12519                params.text_document.uri,
12520                lsp::Uri::from_file_path(path!("/file.ts")).unwrap()
12521            );
12522            futures::future::pending::<()>().await;
12523            unreachable!()
12524        },
12525    );
12526    let format = editor
12527        .update_in(cx, |editor, window, cx| {
12528            editor.perform_code_action_kind(
12529                project,
12530                CodeActionKind::SOURCE_ORGANIZE_IMPORTS,
12531                window,
12532                cx,
12533            )
12534        })
12535        .unwrap();
12536    cx.executor().advance_clock(super::CODE_ACTION_TIMEOUT);
12537    cx.executor().start_waiting();
12538    format.await;
12539    assert_eq!(
12540        editor.update(cx, |editor, cx| editor.text(cx)),
12541        "import { a } from 'module';\nimport { b } from 'module';\n\nconst x = a;\n"
12542    );
12543}
12544
12545#[gpui::test]
12546async fn test_concurrent_format_requests(cx: &mut TestAppContext) {
12547    init_test(cx, |_| {});
12548
12549    let mut cx = EditorLspTestContext::new_rust(
12550        lsp::ServerCapabilities {
12551            document_formatting_provider: Some(lsp::OneOf::Left(true)),
12552            ..Default::default()
12553        },
12554        cx,
12555    )
12556    .await;
12557
12558    cx.set_state(indoc! {"
12559        one.twoˇ
12560    "});
12561
12562    // The format request takes a long time. When it completes, it inserts
12563    // a newline and an indent before the `.`
12564    cx.lsp
12565        .set_request_handler::<lsp::request::Formatting, _, _>(move |_, cx| {
12566            let executor = cx.background_executor().clone();
12567            async move {
12568                executor.timer(Duration::from_millis(100)).await;
12569                Ok(Some(vec![lsp::TextEdit {
12570                    range: lsp::Range::new(lsp::Position::new(0, 3), lsp::Position::new(0, 3)),
12571                    new_text: "\n    ".into(),
12572                }]))
12573            }
12574        });
12575
12576    // Submit a format request.
12577    let format_1 = cx
12578        .update_editor(|editor, window, cx| editor.format(&Format, window, cx))
12579        .unwrap();
12580    cx.executor().run_until_parked();
12581
12582    // Submit a second format request.
12583    let format_2 = cx
12584        .update_editor(|editor, window, cx| editor.format(&Format, window, cx))
12585        .unwrap();
12586    cx.executor().run_until_parked();
12587
12588    // Wait for both format requests to complete
12589    cx.executor().advance_clock(Duration::from_millis(200));
12590    cx.executor().start_waiting();
12591    format_1.await.unwrap();
12592    cx.executor().start_waiting();
12593    format_2.await.unwrap();
12594
12595    // The formatting edits only happens once.
12596    cx.assert_editor_state(indoc! {"
12597        one
12598            .twoˇ
12599    "});
12600}
12601
12602#[gpui::test]
12603async fn test_strip_whitespace_and_format_via_lsp(cx: &mut TestAppContext) {
12604    init_test(cx, |settings| {
12605        settings.defaults.formatter = Some(FormatterList::default())
12606    });
12607
12608    let mut cx = EditorLspTestContext::new_rust(
12609        lsp::ServerCapabilities {
12610            document_formatting_provider: Some(lsp::OneOf::Left(true)),
12611            ..Default::default()
12612        },
12613        cx,
12614    )
12615    .await;
12616
12617    cx.run_until_parked();
12618    // Set up a buffer white some trailing whitespace and no trailing newline.
12619    cx.set_state(
12620        &[
12621            "one ",   //
12622            "twoˇ",   //
12623            "three ", //
12624            "four",   //
12625        ]
12626        .join("\n"),
12627    );
12628
12629    // Record which buffer changes have been sent to the language server
12630    let buffer_changes = Arc::new(Mutex::new(Vec::new()));
12631    cx.lsp
12632        .handle_notification::<lsp::notification::DidChangeTextDocument, _>({
12633            let buffer_changes = buffer_changes.clone();
12634            move |params, _| {
12635                buffer_changes.lock().extend(
12636                    params
12637                        .content_changes
12638                        .into_iter()
12639                        .map(|e| (e.range.unwrap(), e.text)),
12640                );
12641            }
12642        });
12643
12644    // Handle formatting requests to the language server.
12645    cx.lsp
12646        .set_request_handler::<lsp::request::Formatting, _, _>({
12647            let buffer_changes = buffer_changes.clone();
12648            move |_, _| {
12649                let buffer_changes = buffer_changes.clone();
12650                // Insert blank lines between each line of the buffer.
12651                async move {
12652                    // When formatting is requested, trailing whitespace has already been stripped,
12653                    // and the trailing newline has already been added.
12654                    assert_eq!(
12655                        &buffer_changes.lock()[1..],
12656                        &[
12657                            (
12658                                lsp::Range::new(lsp::Position::new(0, 3), lsp::Position::new(0, 4)),
12659                                "".into()
12660                            ),
12661                            (
12662                                lsp::Range::new(lsp::Position::new(2, 5), lsp::Position::new(2, 6)),
12663                                "".into()
12664                            ),
12665                            (
12666                                lsp::Range::new(lsp::Position::new(3, 4), lsp::Position::new(3, 4)),
12667                                "\n".into()
12668                            ),
12669                        ]
12670                    );
12671
12672                    Ok(Some(vec![
12673                        lsp::TextEdit {
12674                            range: lsp::Range::new(
12675                                lsp::Position::new(1, 0),
12676                                lsp::Position::new(1, 0),
12677                            ),
12678                            new_text: "\n".into(),
12679                        },
12680                        lsp::TextEdit {
12681                            range: lsp::Range::new(
12682                                lsp::Position::new(2, 0),
12683                                lsp::Position::new(2, 0),
12684                            ),
12685                            new_text: "\n".into(),
12686                        },
12687                    ]))
12688                }
12689            }
12690        });
12691
12692    // Submit a format request.
12693    let format = cx
12694        .update_editor(|editor, window, cx| editor.format(&Format, window, cx))
12695        .unwrap();
12696
12697    cx.run_until_parked();
12698    // After formatting the buffer, the trailing whitespace is stripped,
12699    // a newline is appended, and the edits provided by the language server
12700    // have been applied.
12701    format.await.unwrap();
12702
12703    cx.assert_editor_state(
12704        &[
12705            "one",   //
12706            "",      //
12707            "twoˇ",  //
12708            "",      //
12709            "three", //
12710            "four",  //
12711            "",      //
12712        ]
12713        .join("\n"),
12714    );
12715
12716    // Undoing the formatting undoes the trailing whitespace removal, the
12717    // trailing newline, and the LSP edits.
12718    cx.update_buffer(|buffer, cx| buffer.undo(cx));
12719    cx.assert_editor_state(
12720        &[
12721            "one ",   //
12722            "twoˇ",   //
12723            "three ", //
12724            "four",   //
12725        ]
12726        .join("\n"),
12727    );
12728}
12729
12730#[gpui::test]
12731async fn test_handle_input_for_show_signature_help_auto_signature_help_true(
12732    cx: &mut TestAppContext,
12733) {
12734    init_test(cx, |_| {});
12735
12736    cx.update(|cx| {
12737        cx.update_global::<SettingsStore, _>(|settings, cx| {
12738            settings.update_user_settings(cx, |settings| {
12739                settings.editor.auto_signature_help = Some(true);
12740            });
12741        });
12742    });
12743
12744    let mut cx = EditorLspTestContext::new_rust(
12745        lsp::ServerCapabilities {
12746            signature_help_provider: Some(lsp::SignatureHelpOptions {
12747                ..Default::default()
12748            }),
12749            ..Default::default()
12750        },
12751        cx,
12752    )
12753    .await;
12754
12755    let language = Language::new(
12756        LanguageConfig {
12757            name: "Rust".into(),
12758            brackets: BracketPairConfig {
12759                pairs: vec![
12760                    BracketPair {
12761                        start: "{".to_string(),
12762                        end: "}".to_string(),
12763                        close: true,
12764                        surround: true,
12765                        newline: true,
12766                    },
12767                    BracketPair {
12768                        start: "(".to_string(),
12769                        end: ")".to_string(),
12770                        close: true,
12771                        surround: true,
12772                        newline: true,
12773                    },
12774                    BracketPair {
12775                        start: "/*".to_string(),
12776                        end: " */".to_string(),
12777                        close: true,
12778                        surround: true,
12779                        newline: true,
12780                    },
12781                    BracketPair {
12782                        start: "[".to_string(),
12783                        end: "]".to_string(),
12784                        close: false,
12785                        surround: false,
12786                        newline: true,
12787                    },
12788                    BracketPair {
12789                        start: "\"".to_string(),
12790                        end: "\"".to_string(),
12791                        close: true,
12792                        surround: true,
12793                        newline: false,
12794                    },
12795                    BracketPair {
12796                        start: "<".to_string(),
12797                        end: ">".to_string(),
12798                        close: false,
12799                        surround: true,
12800                        newline: true,
12801                    },
12802                ],
12803                ..Default::default()
12804            },
12805            autoclose_before: "})]".to_string(),
12806            ..Default::default()
12807        },
12808        Some(tree_sitter_rust::LANGUAGE.into()),
12809    );
12810    let language = Arc::new(language);
12811
12812    cx.language_registry().add(language.clone());
12813    cx.update_buffer(|buffer, cx| {
12814        buffer.set_language(Some(language), cx);
12815    });
12816
12817    cx.set_state(
12818        &r#"
12819            fn main() {
12820                sampleˇ
12821            }
12822        "#
12823        .unindent(),
12824    );
12825
12826    cx.update_editor(|editor, window, cx| {
12827        editor.handle_input("(", window, cx);
12828    });
12829    cx.assert_editor_state(
12830        &"
12831            fn main() {
12832                sample(ˇ)
12833            }
12834        "
12835        .unindent(),
12836    );
12837
12838    let mocked_response = lsp::SignatureHelp {
12839        signatures: vec![lsp::SignatureInformation {
12840            label: "fn sample(param1: u8, param2: u8)".to_string(),
12841            documentation: None,
12842            parameters: Some(vec![
12843                lsp::ParameterInformation {
12844                    label: lsp::ParameterLabel::Simple("param1: u8".to_string()),
12845                    documentation: None,
12846                },
12847                lsp::ParameterInformation {
12848                    label: lsp::ParameterLabel::Simple("param2: u8".to_string()),
12849                    documentation: None,
12850                },
12851            ]),
12852            active_parameter: None,
12853        }],
12854        active_signature: Some(0),
12855        active_parameter: Some(0),
12856    };
12857    handle_signature_help_request(&mut cx, mocked_response).await;
12858
12859    cx.condition(|editor, _| editor.signature_help_state.is_shown())
12860        .await;
12861
12862    cx.editor(|editor, _, _| {
12863        let signature_help_state = editor.signature_help_state.popover().cloned();
12864        let signature = signature_help_state.unwrap();
12865        assert_eq!(
12866            signature.signatures[signature.current_signature].label,
12867            "fn sample(param1: u8, param2: u8)"
12868        );
12869    });
12870}
12871
12872#[gpui::test]
12873async fn test_handle_input_with_different_show_signature_settings(cx: &mut TestAppContext) {
12874    init_test(cx, |_| {});
12875
12876    cx.update(|cx| {
12877        cx.update_global::<SettingsStore, _>(|settings, cx| {
12878            settings.update_user_settings(cx, |settings| {
12879                settings.editor.auto_signature_help = Some(false);
12880                settings.editor.show_signature_help_after_edits = Some(false);
12881            });
12882        });
12883    });
12884
12885    let mut cx = EditorLspTestContext::new_rust(
12886        lsp::ServerCapabilities {
12887            signature_help_provider: Some(lsp::SignatureHelpOptions {
12888                ..Default::default()
12889            }),
12890            ..Default::default()
12891        },
12892        cx,
12893    )
12894    .await;
12895
12896    let language = Language::new(
12897        LanguageConfig {
12898            name: "Rust".into(),
12899            brackets: BracketPairConfig {
12900                pairs: vec![
12901                    BracketPair {
12902                        start: "{".to_string(),
12903                        end: "}".to_string(),
12904                        close: true,
12905                        surround: true,
12906                        newline: true,
12907                    },
12908                    BracketPair {
12909                        start: "(".to_string(),
12910                        end: ")".to_string(),
12911                        close: true,
12912                        surround: true,
12913                        newline: true,
12914                    },
12915                    BracketPair {
12916                        start: "/*".to_string(),
12917                        end: " */".to_string(),
12918                        close: true,
12919                        surround: true,
12920                        newline: true,
12921                    },
12922                    BracketPair {
12923                        start: "[".to_string(),
12924                        end: "]".to_string(),
12925                        close: false,
12926                        surround: false,
12927                        newline: true,
12928                    },
12929                    BracketPair {
12930                        start: "\"".to_string(),
12931                        end: "\"".to_string(),
12932                        close: true,
12933                        surround: true,
12934                        newline: false,
12935                    },
12936                    BracketPair {
12937                        start: "<".to_string(),
12938                        end: ">".to_string(),
12939                        close: false,
12940                        surround: true,
12941                        newline: true,
12942                    },
12943                ],
12944                ..Default::default()
12945            },
12946            autoclose_before: "})]".to_string(),
12947            ..Default::default()
12948        },
12949        Some(tree_sitter_rust::LANGUAGE.into()),
12950    );
12951    let language = Arc::new(language);
12952
12953    cx.language_registry().add(language.clone());
12954    cx.update_buffer(|buffer, cx| {
12955        buffer.set_language(Some(language), cx);
12956    });
12957
12958    // Ensure that signature_help is not called when no signature help is enabled.
12959    cx.set_state(
12960        &r#"
12961            fn main() {
12962                sampleˇ
12963            }
12964        "#
12965        .unindent(),
12966    );
12967    cx.update_editor(|editor, window, cx| {
12968        editor.handle_input("(", window, cx);
12969    });
12970    cx.assert_editor_state(
12971        &"
12972            fn main() {
12973                sample(ˇ)
12974            }
12975        "
12976        .unindent(),
12977    );
12978    cx.editor(|editor, _, _| {
12979        assert!(editor.signature_help_state.task().is_none());
12980    });
12981
12982    let mocked_response = lsp::SignatureHelp {
12983        signatures: vec![lsp::SignatureInformation {
12984            label: "fn sample(param1: u8, param2: u8)".to_string(),
12985            documentation: None,
12986            parameters: Some(vec![
12987                lsp::ParameterInformation {
12988                    label: lsp::ParameterLabel::Simple("param1: u8".to_string()),
12989                    documentation: None,
12990                },
12991                lsp::ParameterInformation {
12992                    label: lsp::ParameterLabel::Simple("param2: u8".to_string()),
12993                    documentation: None,
12994                },
12995            ]),
12996            active_parameter: None,
12997        }],
12998        active_signature: Some(0),
12999        active_parameter: Some(0),
13000    };
13001
13002    // Ensure that signature_help is called when enabled afte edits
13003    cx.update(|_, cx| {
13004        cx.update_global::<SettingsStore, _>(|settings, cx| {
13005            settings.update_user_settings(cx, |settings| {
13006                settings.editor.auto_signature_help = Some(false);
13007                settings.editor.show_signature_help_after_edits = Some(true);
13008            });
13009        });
13010    });
13011    cx.set_state(
13012        &r#"
13013            fn main() {
13014                sampleˇ
13015            }
13016        "#
13017        .unindent(),
13018    );
13019    cx.update_editor(|editor, window, cx| {
13020        editor.handle_input("(", window, cx);
13021    });
13022    cx.assert_editor_state(
13023        &"
13024            fn main() {
13025                sample(ˇ)
13026            }
13027        "
13028        .unindent(),
13029    );
13030    handle_signature_help_request(&mut cx, mocked_response.clone()).await;
13031    cx.condition(|editor, _| editor.signature_help_state.is_shown())
13032        .await;
13033    cx.update_editor(|editor, _, _| {
13034        let signature_help_state = editor.signature_help_state.popover().cloned();
13035        assert!(signature_help_state.is_some());
13036        let signature = signature_help_state.unwrap();
13037        assert_eq!(
13038            signature.signatures[signature.current_signature].label,
13039            "fn sample(param1: u8, param2: u8)"
13040        );
13041        editor.signature_help_state = SignatureHelpState::default();
13042    });
13043
13044    // Ensure that signature_help is called when auto signature help override is enabled
13045    cx.update(|_, cx| {
13046        cx.update_global::<SettingsStore, _>(|settings, cx| {
13047            settings.update_user_settings(cx, |settings| {
13048                settings.editor.auto_signature_help = Some(true);
13049                settings.editor.show_signature_help_after_edits = Some(false);
13050            });
13051        });
13052    });
13053    cx.set_state(
13054        &r#"
13055            fn main() {
13056                sampleˇ
13057            }
13058        "#
13059        .unindent(),
13060    );
13061    cx.update_editor(|editor, window, cx| {
13062        editor.handle_input("(", window, cx);
13063    });
13064    cx.assert_editor_state(
13065        &"
13066            fn main() {
13067                sample(ˇ)
13068            }
13069        "
13070        .unindent(),
13071    );
13072    handle_signature_help_request(&mut cx, mocked_response).await;
13073    cx.condition(|editor, _| editor.signature_help_state.is_shown())
13074        .await;
13075    cx.editor(|editor, _, _| {
13076        let signature_help_state = editor.signature_help_state.popover().cloned();
13077        assert!(signature_help_state.is_some());
13078        let signature = signature_help_state.unwrap();
13079        assert_eq!(
13080            signature.signatures[signature.current_signature].label,
13081            "fn sample(param1: u8, param2: u8)"
13082        );
13083    });
13084}
13085
13086#[gpui::test]
13087async fn test_signature_help(cx: &mut TestAppContext) {
13088    init_test(cx, |_| {});
13089    cx.update(|cx| {
13090        cx.update_global::<SettingsStore, _>(|settings, cx| {
13091            settings.update_user_settings(cx, |settings| {
13092                settings.editor.auto_signature_help = Some(true);
13093            });
13094        });
13095    });
13096
13097    let mut cx = EditorLspTestContext::new_rust(
13098        lsp::ServerCapabilities {
13099            signature_help_provider: Some(lsp::SignatureHelpOptions {
13100                ..Default::default()
13101            }),
13102            ..Default::default()
13103        },
13104        cx,
13105    )
13106    .await;
13107
13108    // A test that directly calls `show_signature_help`
13109    cx.update_editor(|editor, window, cx| {
13110        editor.show_signature_help(&ShowSignatureHelp, window, cx);
13111    });
13112
13113    let mocked_response = lsp::SignatureHelp {
13114        signatures: vec![lsp::SignatureInformation {
13115            label: "fn sample(param1: u8, param2: u8)".to_string(),
13116            documentation: None,
13117            parameters: Some(vec![
13118                lsp::ParameterInformation {
13119                    label: lsp::ParameterLabel::Simple("param1: u8".to_string()),
13120                    documentation: None,
13121                },
13122                lsp::ParameterInformation {
13123                    label: lsp::ParameterLabel::Simple("param2: u8".to_string()),
13124                    documentation: None,
13125                },
13126            ]),
13127            active_parameter: None,
13128        }],
13129        active_signature: Some(0),
13130        active_parameter: Some(0),
13131    };
13132    handle_signature_help_request(&mut cx, mocked_response).await;
13133
13134    cx.condition(|editor, _| editor.signature_help_state.is_shown())
13135        .await;
13136
13137    cx.editor(|editor, _, _| {
13138        let signature_help_state = editor.signature_help_state.popover().cloned();
13139        assert!(signature_help_state.is_some());
13140        let signature = signature_help_state.unwrap();
13141        assert_eq!(
13142            signature.signatures[signature.current_signature].label,
13143            "fn sample(param1: u8, param2: u8)"
13144        );
13145    });
13146
13147    // When exiting outside from inside the brackets, `signature_help` is closed.
13148    cx.set_state(indoc! {"
13149        fn main() {
13150            sample(ˇ);
13151        }
13152
13153        fn sample(param1: u8, param2: u8) {}
13154    "});
13155
13156    cx.update_editor(|editor, window, cx| {
13157        editor.change_selections(SelectionEffects::no_scroll(), window, cx, |s| {
13158            s.select_ranges([0..0])
13159        });
13160    });
13161
13162    let mocked_response = lsp::SignatureHelp {
13163        signatures: Vec::new(),
13164        active_signature: None,
13165        active_parameter: None,
13166    };
13167    handle_signature_help_request(&mut cx, mocked_response).await;
13168
13169    cx.condition(|editor, _| !editor.signature_help_state.is_shown())
13170        .await;
13171
13172    cx.editor(|editor, _, _| {
13173        assert!(!editor.signature_help_state.is_shown());
13174    });
13175
13176    // When entering inside the brackets from outside, `show_signature_help` is automatically called.
13177    cx.set_state(indoc! {"
13178        fn main() {
13179            sample(ˇ);
13180        }
13181
13182        fn sample(param1: u8, param2: u8) {}
13183    "});
13184
13185    let mocked_response = lsp::SignatureHelp {
13186        signatures: vec![lsp::SignatureInformation {
13187            label: "fn sample(param1: u8, param2: u8)".to_string(),
13188            documentation: None,
13189            parameters: Some(vec![
13190                lsp::ParameterInformation {
13191                    label: lsp::ParameterLabel::Simple("param1: u8".to_string()),
13192                    documentation: None,
13193                },
13194                lsp::ParameterInformation {
13195                    label: lsp::ParameterLabel::Simple("param2: u8".to_string()),
13196                    documentation: None,
13197                },
13198            ]),
13199            active_parameter: None,
13200        }],
13201        active_signature: Some(0),
13202        active_parameter: Some(0),
13203    };
13204    handle_signature_help_request(&mut cx, mocked_response.clone()).await;
13205    cx.condition(|editor, _| editor.signature_help_state.is_shown())
13206        .await;
13207    cx.editor(|editor, _, _| {
13208        assert!(editor.signature_help_state.is_shown());
13209    });
13210
13211    // Restore the popover with more parameter input
13212    cx.set_state(indoc! {"
13213        fn main() {
13214            sample(param1, param2ˇ);
13215        }
13216
13217        fn sample(param1: u8, param2: u8) {}
13218    "});
13219
13220    let mocked_response = lsp::SignatureHelp {
13221        signatures: vec![lsp::SignatureInformation {
13222            label: "fn sample(param1: u8, param2: u8)".to_string(),
13223            documentation: None,
13224            parameters: Some(vec![
13225                lsp::ParameterInformation {
13226                    label: lsp::ParameterLabel::Simple("param1: u8".to_string()),
13227                    documentation: None,
13228                },
13229                lsp::ParameterInformation {
13230                    label: lsp::ParameterLabel::Simple("param2: u8".to_string()),
13231                    documentation: None,
13232                },
13233            ]),
13234            active_parameter: None,
13235        }],
13236        active_signature: Some(0),
13237        active_parameter: Some(1),
13238    };
13239    handle_signature_help_request(&mut cx, mocked_response.clone()).await;
13240    cx.condition(|editor, _| editor.signature_help_state.is_shown())
13241        .await;
13242
13243    // When selecting a range, the popover is gone.
13244    // Avoid using `cx.set_state` to not actually edit the document, just change its selections.
13245    cx.update_editor(|editor, window, cx| {
13246        editor.change_selections(SelectionEffects::no_scroll(), window, cx, |s| {
13247            s.select_ranges(Some(Point::new(1, 25)..Point::new(1, 19)));
13248        })
13249    });
13250    cx.assert_editor_state(indoc! {"
13251        fn main() {
13252            sample(param1, «ˇparam2»);
13253        }
13254
13255        fn sample(param1: u8, param2: u8) {}
13256    "});
13257    cx.editor(|editor, _, _| {
13258        assert!(!editor.signature_help_state.is_shown());
13259    });
13260
13261    // When unselecting again, the popover is back if within the brackets.
13262    cx.update_editor(|editor, window, cx| {
13263        editor.change_selections(SelectionEffects::no_scroll(), window, cx, |s| {
13264            s.select_ranges(Some(Point::new(1, 19)..Point::new(1, 19)));
13265        })
13266    });
13267    cx.assert_editor_state(indoc! {"
13268        fn main() {
13269            sample(param1, ˇparam2);
13270        }
13271
13272        fn sample(param1: u8, param2: u8) {}
13273    "});
13274    handle_signature_help_request(&mut cx, mocked_response).await;
13275    cx.condition(|editor, _| editor.signature_help_state.is_shown())
13276        .await;
13277    cx.editor(|editor, _, _| {
13278        assert!(editor.signature_help_state.is_shown());
13279    });
13280
13281    // Test to confirm that SignatureHelp does not appear after deselecting multiple ranges when it was hidden by pressing Escape.
13282    cx.update_editor(|editor, window, cx| {
13283        editor.change_selections(SelectionEffects::no_scroll(), window, cx, |s| {
13284            s.select_ranges(Some(Point::new(0, 0)..Point::new(0, 0)));
13285            s.select_ranges(Some(Point::new(1, 19)..Point::new(1, 19)));
13286        })
13287    });
13288    cx.assert_editor_state(indoc! {"
13289        fn main() {
13290            sample(param1, ˇparam2);
13291        }
13292
13293        fn sample(param1: u8, param2: u8) {}
13294    "});
13295
13296    let mocked_response = lsp::SignatureHelp {
13297        signatures: vec![lsp::SignatureInformation {
13298            label: "fn sample(param1: u8, param2: u8)".to_string(),
13299            documentation: None,
13300            parameters: Some(vec![
13301                lsp::ParameterInformation {
13302                    label: lsp::ParameterLabel::Simple("param1: u8".to_string()),
13303                    documentation: None,
13304                },
13305                lsp::ParameterInformation {
13306                    label: lsp::ParameterLabel::Simple("param2: u8".to_string()),
13307                    documentation: None,
13308                },
13309            ]),
13310            active_parameter: None,
13311        }],
13312        active_signature: Some(0),
13313        active_parameter: Some(1),
13314    };
13315    handle_signature_help_request(&mut cx, mocked_response.clone()).await;
13316    cx.condition(|editor, _| editor.signature_help_state.is_shown())
13317        .await;
13318    cx.update_editor(|editor, _, cx| {
13319        editor.hide_signature_help(cx, SignatureHelpHiddenBy::Escape);
13320    });
13321    cx.condition(|editor, _| !editor.signature_help_state.is_shown())
13322        .await;
13323    cx.update_editor(|editor, window, cx| {
13324        editor.change_selections(SelectionEffects::no_scroll(), window, cx, |s| {
13325            s.select_ranges(Some(Point::new(1, 25)..Point::new(1, 19)));
13326        })
13327    });
13328    cx.assert_editor_state(indoc! {"
13329        fn main() {
13330            sample(param1, «ˇparam2»);
13331        }
13332
13333        fn sample(param1: u8, param2: u8) {}
13334    "});
13335    cx.update_editor(|editor, window, cx| {
13336        editor.change_selections(SelectionEffects::no_scroll(), window, cx, |s| {
13337            s.select_ranges(Some(Point::new(1, 19)..Point::new(1, 19)));
13338        })
13339    });
13340    cx.assert_editor_state(indoc! {"
13341        fn main() {
13342            sample(param1, ˇparam2);
13343        }
13344
13345        fn sample(param1: u8, param2: u8) {}
13346    "});
13347    cx.condition(|editor, _| !editor.signature_help_state.is_shown()) // because hidden by escape
13348        .await;
13349}
13350
13351#[gpui::test]
13352async fn test_signature_help_multiple_signatures(cx: &mut TestAppContext) {
13353    init_test(cx, |_| {});
13354
13355    let mut cx = EditorLspTestContext::new_rust(
13356        lsp::ServerCapabilities {
13357            signature_help_provider: Some(lsp::SignatureHelpOptions {
13358                ..Default::default()
13359            }),
13360            ..Default::default()
13361        },
13362        cx,
13363    )
13364    .await;
13365
13366    cx.set_state(indoc! {"
13367        fn main() {
13368            overloadedˇ
13369        }
13370    "});
13371
13372    cx.update_editor(|editor, window, cx| {
13373        editor.handle_input("(", window, cx);
13374        editor.show_signature_help(&ShowSignatureHelp, window, cx);
13375    });
13376
13377    // Mock response with 3 signatures
13378    let mocked_response = lsp::SignatureHelp {
13379        signatures: vec![
13380            lsp::SignatureInformation {
13381                label: "fn overloaded(x: i32)".to_string(),
13382                documentation: None,
13383                parameters: Some(vec![lsp::ParameterInformation {
13384                    label: lsp::ParameterLabel::Simple("x: i32".to_string()),
13385                    documentation: None,
13386                }]),
13387                active_parameter: None,
13388            },
13389            lsp::SignatureInformation {
13390                label: "fn overloaded(x: i32, y: i32)".to_string(),
13391                documentation: None,
13392                parameters: Some(vec![
13393                    lsp::ParameterInformation {
13394                        label: lsp::ParameterLabel::Simple("x: i32".to_string()),
13395                        documentation: None,
13396                    },
13397                    lsp::ParameterInformation {
13398                        label: lsp::ParameterLabel::Simple("y: i32".to_string()),
13399                        documentation: None,
13400                    },
13401                ]),
13402                active_parameter: None,
13403            },
13404            lsp::SignatureInformation {
13405                label: "fn overloaded(x: i32, y: i32, z: i32)".to_string(),
13406                documentation: None,
13407                parameters: Some(vec![
13408                    lsp::ParameterInformation {
13409                        label: lsp::ParameterLabel::Simple("x: i32".to_string()),
13410                        documentation: None,
13411                    },
13412                    lsp::ParameterInformation {
13413                        label: lsp::ParameterLabel::Simple("y: i32".to_string()),
13414                        documentation: None,
13415                    },
13416                    lsp::ParameterInformation {
13417                        label: lsp::ParameterLabel::Simple("z: i32".to_string()),
13418                        documentation: None,
13419                    },
13420                ]),
13421                active_parameter: None,
13422            },
13423        ],
13424        active_signature: Some(1),
13425        active_parameter: Some(0),
13426    };
13427    handle_signature_help_request(&mut cx, mocked_response).await;
13428
13429    cx.condition(|editor, _| editor.signature_help_state.is_shown())
13430        .await;
13431
13432    // Verify we have multiple signatures and the right one is selected
13433    cx.editor(|editor, _, _| {
13434        let popover = editor.signature_help_state.popover().cloned().unwrap();
13435        assert_eq!(popover.signatures.len(), 3);
13436        // active_signature was 1, so that should be the current
13437        assert_eq!(popover.current_signature, 1);
13438        assert_eq!(popover.signatures[0].label, "fn overloaded(x: i32)");
13439        assert_eq!(popover.signatures[1].label, "fn overloaded(x: i32, y: i32)");
13440        assert_eq!(
13441            popover.signatures[2].label,
13442            "fn overloaded(x: i32, y: i32, z: i32)"
13443        );
13444    });
13445
13446    // Test navigation functionality
13447    cx.update_editor(|editor, window, cx| {
13448        editor.signature_help_next(&crate::SignatureHelpNext, window, cx);
13449    });
13450
13451    cx.editor(|editor, _, _| {
13452        let popover = editor.signature_help_state.popover().cloned().unwrap();
13453        assert_eq!(popover.current_signature, 2);
13454    });
13455
13456    // Test wrap around
13457    cx.update_editor(|editor, window, cx| {
13458        editor.signature_help_next(&crate::SignatureHelpNext, window, cx);
13459    });
13460
13461    cx.editor(|editor, _, _| {
13462        let popover = editor.signature_help_state.popover().cloned().unwrap();
13463        assert_eq!(popover.current_signature, 0);
13464    });
13465
13466    // Test previous navigation
13467    cx.update_editor(|editor, window, cx| {
13468        editor.signature_help_prev(&crate::SignatureHelpPrevious, window, cx);
13469    });
13470
13471    cx.editor(|editor, _, _| {
13472        let popover = editor.signature_help_state.popover().cloned().unwrap();
13473        assert_eq!(popover.current_signature, 2);
13474    });
13475}
13476
13477#[gpui::test]
13478async fn test_completion_mode(cx: &mut TestAppContext) {
13479    init_test(cx, |_| {});
13480    let mut cx = EditorLspTestContext::new_rust(
13481        lsp::ServerCapabilities {
13482            completion_provider: Some(lsp::CompletionOptions {
13483                resolve_provider: Some(true),
13484                ..Default::default()
13485            }),
13486            ..Default::default()
13487        },
13488        cx,
13489    )
13490    .await;
13491
13492    struct Run {
13493        run_description: &'static str,
13494        initial_state: String,
13495        buffer_marked_text: String,
13496        completion_label: &'static str,
13497        completion_text: &'static str,
13498        expected_with_insert_mode: String,
13499        expected_with_replace_mode: String,
13500        expected_with_replace_subsequence_mode: String,
13501        expected_with_replace_suffix_mode: String,
13502    }
13503
13504    let runs = [
13505        Run {
13506            run_description: "Start of word matches completion text",
13507            initial_state: "before ediˇ after".into(),
13508            buffer_marked_text: "before <edi|> after".into(),
13509            completion_label: "editor",
13510            completion_text: "editor",
13511            expected_with_insert_mode: "before editorˇ after".into(),
13512            expected_with_replace_mode: "before editorˇ after".into(),
13513            expected_with_replace_subsequence_mode: "before editorˇ after".into(),
13514            expected_with_replace_suffix_mode: "before editorˇ after".into(),
13515        },
13516        Run {
13517            run_description: "Accept same text at the middle of the word",
13518            initial_state: "before ediˇtor after".into(),
13519            buffer_marked_text: "before <edi|tor> after".into(),
13520            completion_label: "editor",
13521            completion_text: "editor",
13522            expected_with_insert_mode: "before editorˇtor after".into(),
13523            expected_with_replace_mode: "before editorˇ after".into(),
13524            expected_with_replace_subsequence_mode: "before editorˇ after".into(),
13525            expected_with_replace_suffix_mode: "before editorˇ after".into(),
13526        },
13527        Run {
13528            run_description: "End of word matches completion text -- cursor at end",
13529            initial_state: "before torˇ after".into(),
13530            buffer_marked_text: "before <tor|> after".into(),
13531            completion_label: "editor",
13532            completion_text: "editor",
13533            expected_with_insert_mode: "before editorˇ after".into(),
13534            expected_with_replace_mode: "before editorˇ after".into(),
13535            expected_with_replace_subsequence_mode: "before editorˇ after".into(),
13536            expected_with_replace_suffix_mode: "before editorˇ after".into(),
13537        },
13538        Run {
13539            run_description: "End of word matches completion text -- cursor at start",
13540            initial_state: "before ˇtor after".into(),
13541            buffer_marked_text: "before <|tor> after".into(),
13542            completion_label: "editor",
13543            completion_text: "editor",
13544            expected_with_insert_mode: "before editorˇtor after".into(),
13545            expected_with_replace_mode: "before editorˇ after".into(),
13546            expected_with_replace_subsequence_mode: "before editorˇ after".into(),
13547            expected_with_replace_suffix_mode: "before editorˇ after".into(),
13548        },
13549        Run {
13550            run_description: "Prepend text containing whitespace",
13551            initial_state: "pˇfield: bool".into(),
13552            buffer_marked_text: "<p|field>: bool".into(),
13553            completion_label: "pub ",
13554            completion_text: "pub ",
13555            expected_with_insert_mode: "pub ˇfield: bool".into(),
13556            expected_with_replace_mode: "pub ˇ: bool".into(),
13557            expected_with_replace_subsequence_mode: "pub ˇfield: bool".into(),
13558            expected_with_replace_suffix_mode: "pub ˇfield: bool".into(),
13559        },
13560        Run {
13561            run_description: "Add element to start of list",
13562            initial_state: "[element_ˇelement_2]".into(),
13563            buffer_marked_text: "[<element_|element_2>]".into(),
13564            completion_label: "element_1",
13565            completion_text: "element_1",
13566            expected_with_insert_mode: "[element_1ˇelement_2]".into(),
13567            expected_with_replace_mode: "[element_1ˇ]".into(),
13568            expected_with_replace_subsequence_mode: "[element_1ˇelement_2]".into(),
13569            expected_with_replace_suffix_mode: "[element_1ˇelement_2]".into(),
13570        },
13571        Run {
13572            run_description: "Add element to start of list -- first and second elements are equal",
13573            initial_state: "[elˇelement]".into(),
13574            buffer_marked_text: "[<el|element>]".into(),
13575            completion_label: "element",
13576            completion_text: "element",
13577            expected_with_insert_mode: "[elementˇelement]".into(),
13578            expected_with_replace_mode: "[elementˇ]".into(),
13579            expected_with_replace_subsequence_mode: "[elementˇelement]".into(),
13580            expected_with_replace_suffix_mode: "[elementˇ]".into(),
13581        },
13582        Run {
13583            run_description: "Ends with matching suffix",
13584            initial_state: "SubˇError".into(),
13585            buffer_marked_text: "<Sub|Error>".into(),
13586            completion_label: "SubscriptionError",
13587            completion_text: "SubscriptionError",
13588            expected_with_insert_mode: "SubscriptionErrorˇError".into(),
13589            expected_with_replace_mode: "SubscriptionErrorˇ".into(),
13590            expected_with_replace_subsequence_mode: "SubscriptionErrorˇ".into(),
13591            expected_with_replace_suffix_mode: "SubscriptionErrorˇ".into(),
13592        },
13593        Run {
13594            run_description: "Suffix is a subsequence -- contiguous",
13595            initial_state: "SubˇErr".into(),
13596            buffer_marked_text: "<Sub|Err>".into(),
13597            completion_label: "SubscriptionError",
13598            completion_text: "SubscriptionError",
13599            expected_with_insert_mode: "SubscriptionErrorˇErr".into(),
13600            expected_with_replace_mode: "SubscriptionErrorˇ".into(),
13601            expected_with_replace_subsequence_mode: "SubscriptionErrorˇ".into(),
13602            expected_with_replace_suffix_mode: "SubscriptionErrorˇErr".into(),
13603        },
13604        Run {
13605            run_description: "Suffix is a subsequence -- non-contiguous -- replace intended",
13606            initial_state: "Suˇscrirr".into(),
13607            buffer_marked_text: "<Su|scrirr>".into(),
13608            completion_label: "SubscriptionError",
13609            completion_text: "SubscriptionError",
13610            expected_with_insert_mode: "SubscriptionErrorˇscrirr".into(),
13611            expected_with_replace_mode: "SubscriptionErrorˇ".into(),
13612            expected_with_replace_subsequence_mode: "SubscriptionErrorˇ".into(),
13613            expected_with_replace_suffix_mode: "SubscriptionErrorˇscrirr".into(),
13614        },
13615        Run {
13616            run_description: "Suffix is a subsequence -- non-contiguous -- replace unintended",
13617            initial_state: "foo(indˇix)".into(),
13618            buffer_marked_text: "foo(<ind|ix>)".into(),
13619            completion_label: "node_index",
13620            completion_text: "node_index",
13621            expected_with_insert_mode: "foo(node_indexˇix)".into(),
13622            expected_with_replace_mode: "foo(node_indexˇ)".into(),
13623            expected_with_replace_subsequence_mode: "foo(node_indexˇix)".into(),
13624            expected_with_replace_suffix_mode: "foo(node_indexˇix)".into(),
13625        },
13626        Run {
13627            run_description: "Replace range ends before cursor - should extend to cursor",
13628            initial_state: "before editˇo after".into(),
13629            buffer_marked_text: "before <{ed}>it|o after".into(),
13630            completion_label: "editor",
13631            completion_text: "editor",
13632            expected_with_insert_mode: "before editorˇo after".into(),
13633            expected_with_replace_mode: "before editorˇo after".into(),
13634            expected_with_replace_subsequence_mode: "before editorˇo after".into(),
13635            expected_with_replace_suffix_mode: "before editorˇo after".into(),
13636        },
13637        Run {
13638            run_description: "Uses label for suffix matching",
13639            initial_state: "before ediˇtor after".into(),
13640            buffer_marked_text: "before <edi|tor> after".into(),
13641            completion_label: "editor",
13642            completion_text: "editor()",
13643            expected_with_insert_mode: "before editor()ˇtor after".into(),
13644            expected_with_replace_mode: "before editor()ˇ after".into(),
13645            expected_with_replace_subsequence_mode: "before editor()ˇ after".into(),
13646            expected_with_replace_suffix_mode: "before editor()ˇ after".into(),
13647        },
13648        Run {
13649            run_description: "Case insensitive subsequence and suffix matching",
13650            initial_state: "before EDiˇtoR after".into(),
13651            buffer_marked_text: "before <EDi|toR> after".into(),
13652            completion_label: "editor",
13653            completion_text: "editor",
13654            expected_with_insert_mode: "before editorˇtoR after".into(),
13655            expected_with_replace_mode: "before editorˇ after".into(),
13656            expected_with_replace_subsequence_mode: "before editorˇ after".into(),
13657            expected_with_replace_suffix_mode: "before editorˇ after".into(),
13658        },
13659    ];
13660
13661    for run in runs {
13662        let run_variations = [
13663            (LspInsertMode::Insert, run.expected_with_insert_mode),
13664            (LspInsertMode::Replace, run.expected_with_replace_mode),
13665            (
13666                LspInsertMode::ReplaceSubsequence,
13667                run.expected_with_replace_subsequence_mode,
13668            ),
13669            (
13670                LspInsertMode::ReplaceSuffix,
13671                run.expected_with_replace_suffix_mode,
13672            ),
13673        ];
13674
13675        for (lsp_insert_mode, expected_text) in run_variations {
13676            eprintln!(
13677                "run = {:?}, mode = {lsp_insert_mode:.?}",
13678                run.run_description,
13679            );
13680
13681            update_test_language_settings(&mut cx, |settings| {
13682                settings.defaults.completions = Some(CompletionSettingsContent {
13683                    lsp_insert_mode: Some(lsp_insert_mode),
13684                    words: Some(WordsCompletionMode::Disabled),
13685                    words_min_length: Some(0),
13686                    ..Default::default()
13687                });
13688            });
13689
13690            cx.set_state(&run.initial_state);
13691            cx.update_editor(|editor, window, cx| {
13692                editor.show_completions(&ShowCompletions { trigger: None }, window, cx);
13693            });
13694
13695            let counter = Arc::new(AtomicUsize::new(0));
13696            handle_completion_request_with_insert_and_replace(
13697                &mut cx,
13698                &run.buffer_marked_text,
13699                vec![(run.completion_label, run.completion_text)],
13700                counter.clone(),
13701            )
13702            .await;
13703            cx.condition(|editor, _| editor.context_menu_visible())
13704                .await;
13705            assert_eq!(counter.load(atomic::Ordering::Acquire), 1);
13706
13707            let apply_additional_edits = cx.update_editor(|editor, window, cx| {
13708                editor
13709                    .confirm_completion(&ConfirmCompletion::default(), window, cx)
13710                    .unwrap()
13711            });
13712            cx.assert_editor_state(&expected_text);
13713            handle_resolve_completion_request(&mut cx, None).await;
13714            apply_additional_edits.await.unwrap();
13715        }
13716    }
13717}
13718
13719#[gpui::test]
13720async fn test_completion_with_mode_specified_by_action(cx: &mut TestAppContext) {
13721    init_test(cx, |_| {});
13722    let mut cx = EditorLspTestContext::new_rust(
13723        lsp::ServerCapabilities {
13724            completion_provider: Some(lsp::CompletionOptions {
13725                resolve_provider: Some(true),
13726                ..Default::default()
13727            }),
13728            ..Default::default()
13729        },
13730        cx,
13731    )
13732    .await;
13733
13734    let initial_state = "SubˇError";
13735    let buffer_marked_text = "<Sub|Error>";
13736    let completion_text = "SubscriptionError";
13737    let expected_with_insert_mode = "SubscriptionErrorˇError";
13738    let expected_with_replace_mode = "SubscriptionErrorˇ";
13739
13740    update_test_language_settings(&mut cx, |settings| {
13741        settings.defaults.completions = Some(CompletionSettingsContent {
13742            words: Some(WordsCompletionMode::Disabled),
13743            words_min_length: Some(0),
13744            // set the opposite here to ensure that the action is overriding the default behavior
13745            lsp_insert_mode: Some(LspInsertMode::Insert),
13746            ..Default::default()
13747        });
13748    });
13749
13750    cx.set_state(initial_state);
13751    cx.update_editor(|editor, window, cx| {
13752        editor.show_completions(&ShowCompletions { trigger: None }, window, cx);
13753    });
13754
13755    let counter = Arc::new(AtomicUsize::new(0));
13756    handle_completion_request_with_insert_and_replace(
13757        &mut cx,
13758        buffer_marked_text,
13759        vec![(completion_text, completion_text)],
13760        counter.clone(),
13761    )
13762    .await;
13763    cx.condition(|editor, _| editor.context_menu_visible())
13764        .await;
13765    assert_eq!(counter.load(atomic::Ordering::Acquire), 1);
13766
13767    let apply_additional_edits = cx.update_editor(|editor, window, cx| {
13768        editor
13769            .confirm_completion_replace(&ConfirmCompletionReplace, window, cx)
13770            .unwrap()
13771    });
13772    cx.assert_editor_state(expected_with_replace_mode);
13773    handle_resolve_completion_request(&mut cx, None).await;
13774    apply_additional_edits.await.unwrap();
13775
13776    update_test_language_settings(&mut cx, |settings| {
13777        settings.defaults.completions = Some(CompletionSettingsContent {
13778            words: Some(WordsCompletionMode::Disabled),
13779            words_min_length: Some(0),
13780            // set the opposite here to ensure that the action is overriding the default behavior
13781            lsp_insert_mode: Some(LspInsertMode::Replace),
13782            ..Default::default()
13783        });
13784    });
13785
13786    cx.set_state(initial_state);
13787    cx.update_editor(|editor, window, cx| {
13788        editor.show_completions(&ShowCompletions { trigger: None }, window, cx);
13789    });
13790    handle_completion_request_with_insert_and_replace(
13791        &mut cx,
13792        buffer_marked_text,
13793        vec![(completion_text, completion_text)],
13794        counter.clone(),
13795    )
13796    .await;
13797    cx.condition(|editor, _| editor.context_menu_visible())
13798        .await;
13799    assert_eq!(counter.load(atomic::Ordering::Acquire), 2);
13800
13801    let apply_additional_edits = cx.update_editor(|editor, window, cx| {
13802        editor
13803            .confirm_completion_insert(&ConfirmCompletionInsert, window, cx)
13804            .unwrap()
13805    });
13806    cx.assert_editor_state(expected_with_insert_mode);
13807    handle_resolve_completion_request(&mut cx, None).await;
13808    apply_additional_edits.await.unwrap();
13809}
13810
13811#[gpui::test]
13812async fn test_completion_replacing_surrounding_text_with_multicursors(cx: &mut TestAppContext) {
13813    init_test(cx, |_| {});
13814    let mut cx = EditorLspTestContext::new_rust(
13815        lsp::ServerCapabilities {
13816            completion_provider: Some(lsp::CompletionOptions {
13817                resolve_provider: Some(true),
13818                ..Default::default()
13819            }),
13820            ..Default::default()
13821        },
13822        cx,
13823    )
13824    .await;
13825
13826    // scenario: surrounding text matches completion text
13827    let completion_text = "to_offset";
13828    let initial_state = indoc! {"
13829        1. buf.to_offˇsuffix
13830        2. buf.to_offˇsuf
13831        3. buf.to_offˇfix
13832        4. buf.to_offˇ
13833        5. into_offˇensive
13834        6. ˇsuffix
13835        7. let ˇ //
13836        8. aaˇzz
13837        9. buf.to_off«zzzzzˇ»suffix
13838        10. buf.«ˇzzzzz»suffix
13839        11. to_off«ˇzzzzz»
13840
13841        buf.to_offˇsuffix  // newest cursor
13842    "};
13843    let completion_marked_buffer = indoc! {"
13844        1. buf.to_offsuffix
13845        2. buf.to_offsuf
13846        3. buf.to_offfix
13847        4. buf.to_off
13848        5. into_offensive
13849        6. suffix
13850        7. let  //
13851        8. aazz
13852        9. buf.to_offzzzzzsuffix
13853        10. buf.zzzzzsuffix
13854        11. to_offzzzzz
13855
13856        buf.<to_off|suffix>  // newest cursor
13857    "};
13858    let expected = indoc! {"
13859        1. buf.to_offsetˇ
13860        2. buf.to_offsetˇsuf
13861        3. buf.to_offsetˇfix
13862        4. buf.to_offsetˇ
13863        5. into_offsetˇensive
13864        6. to_offsetˇsuffix
13865        7. let to_offsetˇ //
13866        8. aato_offsetˇzz
13867        9. buf.to_offsetˇ
13868        10. buf.to_offsetˇsuffix
13869        11. to_offsetˇ
13870
13871        buf.to_offsetˇ  // newest cursor
13872    "};
13873    cx.set_state(initial_state);
13874    cx.update_editor(|editor, window, cx| {
13875        editor.show_completions(&ShowCompletions { trigger: None }, window, cx);
13876    });
13877    handle_completion_request_with_insert_and_replace(
13878        &mut cx,
13879        completion_marked_buffer,
13880        vec![(completion_text, completion_text)],
13881        Arc::new(AtomicUsize::new(0)),
13882    )
13883    .await;
13884    cx.condition(|editor, _| editor.context_menu_visible())
13885        .await;
13886    let apply_additional_edits = cx.update_editor(|editor, window, cx| {
13887        editor
13888            .confirm_completion_replace(&ConfirmCompletionReplace, window, cx)
13889            .unwrap()
13890    });
13891    cx.assert_editor_state(expected);
13892    handle_resolve_completion_request(&mut cx, None).await;
13893    apply_additional_edits.await.unwrap();
13894
13895    // scenario: surrounding text matches surroundings of newest cursor, inserting at the end
13896    let completion_text = "foo_and_bar";
13897    let initial_state = indoc! {"
13898        1. ooanbˇ
13899        2. zooanbˇ
13900        3. ooanbˇz
13901        4. zooanbˇz
13902        5. ooanˇ
13903        6. oanbˇ
13904
13905        ooanbˇ
13906    "};
13907    let completion_marked_buffer = indoc! {"
13908        1. ooanb
13909        2. zooanb
13910        3. ooanbz
13911        4. zooanbz
13912        5. ooan
13913        6. oanb
13914
13915        <ooanb|>
13916    "};
13917    let expected = indoc! {"
13918        1. foo_and_barˇ
13919        2. zfoo_and_barˇ
13920        3. foo_and_barˇz
13921        4. zfoo_and_barˇz
13922        5. ooanfoo_and_barˇ
13923        6. oanbfoo_and_barˇ
13924
13925        foo_and_barˇ
13926    "};
13927    cx.set_state(initial_state);
13928    cx.update_editor(|editor, window, cx| {
13929        editor.show_completions(&ShowCompletions { trigger: None }, window, cx);
13930    });
13931    handle_completion_request_with_insert_and_replace(
13932        &mut cx,
13933        completion_marked_buffer,
13934        vec![(completion_text, completion_text)],
13935        Arc::new(AtomicUsize::new(0)),
13936    )
13937    .await;
13938    cx.condition(|editor, _| editor.context_menu_visible())
13939        .await;
13940    let apply_additional_edits = cx.update_editor(|editor, window, cx| {
13941        editor
13942            .confirm_completion_replace(&ConfirmCompletionReplace, window, cx)
13943            .unwrap()
13944    });
13945    cx.assert_editor_state(expected);
13946    handle_resolve_completion_request(&mut cx, None).await;
13947    apply_additional_edits.await.unwrap();
13948
13949    // scenario: surrounding text matches surroundings of newest cursor, inserted at the middle
13950    // (expects the same as if it was inserted at the end)
13951    let completion_text = "foo_and_bar";
13952    let initial_state = indoc! {"
13953        1. ooˇanb
13954        2. zooˇanb
13955        3. ooˇanbz
13956        4. zooˇanbz
13957
13958        ooˇanb
13959    "};
13960    let completion_marked_buffer = indoc! {"
13961        1. ooanb
13962        2. zooanb
13963        3. ooanbz
13964        4. zooanbz
13965
13966        <oo|anb>
13967    "};
13968    let expected = indoc! {"
13969        1. foo_and_barˇ
13970        2. zfoo_and_barˇ
13971        3. foo_and_barˇz
13972        4. zfoo_and_barˇz
13973
13974        foo_and_barˇ
13975    "};
13976    cx.set_state(initial_state);
13977    cx.update_editor(|editor, window, cx| {
13978        editor.show_completions(&ShowCompletions { trigger: None }, window, cx);
13979    });
13980    handle_completion_request_with_insert_and_replace(
13981        &mut cx,
13982        completion_marked_buffer,
13983        vec![(completion_text, completion_text)],
13984        Arc::new(AtomicUsize::new(0)),
13985    )
13986    .await;
13987    cx.condition(|editor, _| editor.context_menu_visible())
13988        .await;
13989    let apply_additional_edits = cx.update_editor(|editor, window, cx| {
13990        editor
13991            .confirm_completion_replace(&ConfirmCompletionReplace, window, cx)
13992            .unwrap()
13993    });
13994    cx.assert_editor_state(expected);
13995    handle_resolve_completion_request(&mut cx, None).await;
13996    apply_additional_edits.await.unwrap();
13997}
13998
13999// This used to crash
14000#[gpui::test]
14001async fn test_completion_in_multibuffer_with_replace_range(cx: &mut TestAppContext) {
14002    init_test(cx, |_| {});
14003
14004    let buffer_text = indoc! {"
14005        fn main() {
14006            10.satu;
14007
14008            //
14009            // separate cursors so they open in different excerpts (manually reproducible)
14010            //
14011
14012            10.satu20;
14013        }
14014    "};
14015    let multibuffer_text_with_selections = indoc! {"
14016        fn main() {
14017            10.satuˇ;
14018
14019            //
14020
14021            //
14022
14023            10.satuˇ20;
14024        }
14025    "};
14026    let expected_multibuffer = indoc! {"
14027        fn main() {
14028            10.saturating_sub()ˇ;
14029
14030            //
14031
14032            //
14033
14034            10.saturating_sub()ˇ;
14035        }
14036    "};
14037
14038    let first_excerpt_end = buffer_text.find("//").unwrap() + 3;
14039    let second_excerpt_end = buffer_text.rfind("//").unwrap() - 4;
14040
14041    let fs = FakeFs::new(cx.executor());
14042    fs.insert_tree(
14043        path!("/a"),
14044        json!({
14045            "main.rs": buffer_text,
14046        }),
14047    )
14048    .await;
14049
14050    let project = Project::test(fs, [path!("/a").as_ref()], cx).await;
14051    let language_registry = project.read_with(cx, |project, _| project.languages().clone());
14052    language_registry.add(rust_lang());
14053    let mut fake_servers = language_registry.register_fake_lsp(
14054        "Rust",
14055        FakeLspAdapter {
14056            capabilities: lsp::ServerCapabilities {
14057                completion_provider: Some(lsp::CompletionOptions {
14058                    resolve_provider: None,
14059                    ..lsp::CompletionOptions::default()
14060                }),
14061                ..lsp::ServerCapabilities::default()
14062            },
14063            ..FakeLspAdapter::default()
14064        },
14065    );
14066    let workspace = cx.add_window(|window, cx| Workspace::test_new(project.clone(), window, cx));
14067    let cx = &mut VisualTestContext::from_window(*workspace, cx);
14068    let buffer = project
14069        .update(cx, |project, cx| {
14070            project.open_local_buffer(path!("/a/main.rs"), cx)
14071        })
14072        .await
14073        .unwrap();
14074
14075    let multi_buffer = cx.new(|cx| {
14076        let mut multi_buffer = MultiBuffer::new(Capability::ReadWrite);
14077        multi_buffer.push_excerpts(
14078            buffer.clone(),
14079            [ExcerptRange::new(0..first_excerpt_end)],
14080            cx,
14081        );
14082        multi_buffer.push_excerpts(
14083            buffer.clone(),
14084            [ExcerptRange::new(second_excerpt_end..buffer_text.len())],
14085            cx,
14086        );
14087        multi_buffer
14088    });
14089
14090    let editor = workspace
14091        .update(cx, |_, window, cx| {
14092            cx.new(|cx| {
14093                Editor::new(
14094                    EditorMode::Full {
14095                        scale_ui_elements_with_buffer_font_size: false,
14096                        show_active_line_background: false,
14097                        sized_by_content: false,
14098                    },
14099                    multi_buffer.clone(),
14100                    Some(project.clone()),
14101                    window,
14102                    cx,
14103                )
14104            })
14105        })
14106        .unwrap();
14107
14108    let pane = workspace
14109        .update(cx, |workspace, _, _| workspace.active_pane().clone())
14110        .unwrap();
14111    pane.update_in(cx, |pane, window, cx| {
14112        pane.add_item(Box::new(editor.clone()), true, true, None, window, cx);
14113    });
14114
14115    let fake_server = fake_servers.next().await.unwrap();
14116
14117    editor.update_in(cx, |editor, window, cx| {
14118        editor.change_selections(SelectionEffects::no_scroll(), window, cx, |s| {
14119            s.select_ranges([
14120                Point::new(1, 11)..Point::new(1, 11),
14121                Point::new(7, 11)..Point::new(7, 11),
14122            ])
14123        });
14124
14125        assert_text_with_selections(editor, multibuffer_text_with_selections, cx);
14126    });
14127
14128    editor.update_in(cx, |editor, window, cx| {
14129        editor.show_completions(&ShowCompletions { trigger: None }, window, cx);
14130    });
14131
14132    fake_server
14133        .set_request_handler::<lsp::request::Completion, _, _>(move |_, _| async move {
14134            let completion_item = lsp::CompletionItem {
14135                label: "saturating_sub()".into(),
14136                text_edit: Some(lsp::CompletionTextEdit::InsertAndReplace(
14137                    lsp::InsertReplaceEdit {
14138                        new_text: "saturating_sub()".to_owned(),
14139                        insert: lsp::Range::new(
14140                            lsp::Position::new(7, 7),
14141                            lsp::Position::new(7, 11),
14142                        ),
14143                        replace: lsp::Range::new(
14144                            lsp::Position::new(7, 7),
14145                            lsp::Position::new(7, 13),
14146                        ),
14147                    },
14148                )),
14149                ..lsp::CompletionItem::default()
14150            };
14151
14152            Ok(Some(lsp::CompletionResponse::Array(vec![completion_item])))
14153        })
14154        .next()
14155        .await
14156        .unwrap();
14157
14158    cx.condition(&editor, |editor, _| editor.context_menu_visible())
14159        .await;
14160
14161    editor
14162        .update_in(cx, |editor, window, cx| {
14163            editor
14164                .confirm_completion_replace(&ConfirmCompletionReplace, window, cx)
14165                .unwrap()
14166        })
14167        .await
14168        .unwrap();
14169
14170    editor.update(cx, |editor, cx| {
14171        assert_text_with_selections(editor, expected_multibuffer, cx);
14172    })
14173}
14174
14175#[gpui::test]
14176async fn test_completion(cx: &mut TestAppContext) {
14177    init_test(cx, |_| {});
14178
14179    let mut cx = EditorLspTestContext::new_rust(
14180        lsp::ServerCapabilities {
14181            completion_provider: Some(lsp::CompletionOptions {
14182                trigger_characters: Some(vec![".".to_string(), ":".to_string()]),
14183                resolve_provider: Some(true),
14184                ..Default::default()
14185            }),
14186            signature_help_provider: Some(lsp::SignatureHelpOptions::default()),
14187            ..Default::default()
14188        },
14189        cx,
14190    )
14191    .await;
14192    let counter = Arc::new(AtomicUsize::new(0));
14193
14194    cx.set_state(indoc! {"
14195        oneˇ
14196        two
14197        three
14198    "});
14199    cx.simulate_keystroke(".");
14200    handle_completion_request(
14201        indoc! {"
14202            one.|<>
14203            two
14204            three
14205        "},
14206        vec!["first_completion", "second_completion"],
14207        true,
14208        counter.clone(),
14209        &mut cx,
14210    )
14211    .await;
14212    cx.condition(|editor, _| editor.context_menu_visible())
14213        .await;
14214    assert_eq!(counter.load(atomic::Ordering::Acquire), 1);
14215
14216    let _handler = handle_signature_help_request(
14217        &mut cx,
14218        lsp::SignatureHelp {
14219            signatures: vec![lsp::SignatureInformation {
14220                label: "test signature".to_string(),
14221                documentation: None,
14222                parameters: Some(vec![lsp::ParameterInformation {
14223                    label: lsp::ParameterLabel::Simple("foo: u8".to_string()),
14224                    documentation: None,
14225                }]),
14226                active_parameter: None,
14227            }],
14228            active_signature: None,
14229            active_parameter: None,
14230        },
14231    );
14232    cx.update_editor(|editor, window, cx| {
14233        assert!(
14234            !editor.signature_help_state.is_shown(),
14235            "No signature help was called for"
14236        );
14237        editor.show_signature_help(&ShowSignatureHelp, window, cx);
14238    });
14239    cx.run_until_parked();
14240    cx.update_editor(|editor, _, _| {
14241        assert!(
14242            !editor.signature_help_state.is_shown(),
14243            "No signature help should be shown when completions menu is open"
14244        );
14245    });
14246
14247    let apply_additional_edits = cx.update_editor(|editor, window, cx| {
14248        editor.context_menu_next(&Default::default(), window, cx);
14249        editor
14250            .confirm_completion(&ConfirmCompletion::default(), window, cx)
14251            .unwrap()
14252    });
14253    cx.assert_editor_state(indoc! {"
14254        one.second_completionˇ
14255        two
14256        three
14257    "});
14258
14259    handle_resolve_completion_request(
14260        &mut cx,
14261        Some(vec![
14262            (
14263                //This overlaps with the primary completion edit which is
14264                //misbehavior from the LSP spec, test that we filter it out
14265                indoc! {"
14266                    one.second_ˇcompletion
14267                    two
14268                    threeˇ
14269                "},
14270                "overlapping additional edit",
14271            ),
14272            (
14273                indoc! {"
14274                    one.second_completion
14275                    two
14276                    threeˇ
14277                "},
14278                "\nadditional edit",
14279            ),
14280        ]),
14281    )
14282    .await;
14283    apply_additional_edits.await.unwrap();
14284    cx.assert_editor_state(indoc! {"
14285        one.second_completionˇ
14286        two
14287        three
14288        additional edit
14289    "});
14290
14291    cx.set_state(indoc! {"
14292        one.second_completion
14293        twoˇ
14294        threeˇ
14295        additional edit
14296    "});
14297    cx.simulate_keystroke(" ");
14298    assert!(cx.editor(|e, _, _| e.context_menu.borrow_mut().is_none()));
14299    cx.simulate_keystroke("s");
14300    assert!(cx.editor(|e, _, _| e.context_menu.borrow_mut().is_none()));
14301
14302    cx.assert_editor_state(indoc! {"
14303        one.second_completion
14304        two sˇ
14305        three sˇ
14306        additional edit
14307    "});
14308    handle_completion_request(
14309        indoc! {"
14310            one.second_completion
14311            two s
14312            three <s|>
14313            additional edit
14314        "},
14315        vec!["fourth_completion", "fifth_completion", "sixth_completion"],
14316        true,
14317        counter.clone(),
14318        &mut cx,
14319    )
14320    .await;
14321    cx.condition(|editor, _| editor.context_menu_visible())
14322        .await;
14323    assert_eq!(counter.load(atomic::Ordering::Acquire), 2);
14324
14325    cx.simulate_keystroke("i");
14326
14327    handle_completion_request(
14328        indoc! {"
14329            one.second_completion
14330            two si
14331            three <si|>
14332            additional edit
14333        "},
14334        vec!["fourth_completion", "fifth_completion", "sixth_completion"],
14335        true,
14336        counter.clone(),
14337        &mut cx,
14338    )
14339    .await;
14340    cx.condition(|editor, _| editor.context_menu_visible())
14341        .await;
14342    assert_eq!(counter.load(atomic::Ordering::Acquire), 3);
14343
14344    let apply_additional_edits = cx.update_editor(|editor, window, cx| {
14345        editor
14346            .confirm_completion(&ConfirmCompletion::default(), window, cx)
14347            .unwrap()
14348    });
14349    cx.assert_editor_state(indoc! {"
14350        one.second_completion
14351        two sixth_completionˇ
14352        three sixth_completionˇ
14353        additional edit
14354    "});
14355
14356    apply_additional_edits.await.unwrap();
14357
14358    update_test_language_settings(&mut cx, |settings| {
14359        settings.defaults.show_completions_on_input = Some(false);
14360    });
14361    cx.set_state("editorˇ");
14362    cx.simulate_keystroke(".");
14363    assert!(cx.editor(|e, _, _| e.context_menu.borrow_mut().is_none()));
14364    cx.simulate_keystrokes("c l o");
14365    cx.assert_editor_state("editor.cloˇ");
14366    assert!(cx.editor(|e, _, _| e.context_menu.borrow_mut().is_none()));
14367    cx.update_editor(|editor, window, cx| {
14368        editor.show_completions(&ShowCompletions { trigger: None }, window, cx);
14369    });
14370    handle_completion_request(
14371        "editor.<clo|>",
14372        vec!["close", "clobber"],
14373        true,
14374        counter.clone(),
14375        &mut cx,
14376    )
14377    .await;
14378    cx.condition(|editor, _| editor.context_menu_visible())
14379        .await;
14380    assert_eq!(counter.load(atomic::Ordering::Acquire), 4);
14381
14382    let apply_additional_edits = cx.update_editor(|editor, window, cx| {
14383        editor
14384            .confirm_completion(&ConfirmCompletion::default(), window, cx)
14385            .unwrap()
14386    });
14387    cx.assert_editor_state("editor.clobberˇ");
14388    handle_resolve_completion_request(&mut cx, None).await;
14389    apply_additional_edits.await.unwrap();
14390}
14391
14392#[gpui::test]
14393async fn test_completion_reuse(cx: &mut TestAppContext) {
14394    init_test(cx, |_| {});
14395
14396    let mut cx = EditorLspTestContext::new_rust(
14397        lsp::ServerCapabilities {
14398            completion_provider: Some(lsp::CompletionOptions {
14399                trigger_characters: Some(vec![".".to_string()]),
14400                ..Default::default()
14401            }),
14402            ..Default::default()
14403        },
14404        cx,
14405    )
14406    .await;
14407
14408    let counter = Arc::new(AtomicUsize::new(0));
14409    cx.set_state("objˇ");
14410    cx.simulate_keystroke(".");
14411
14412    // Initial completion request returns complete results
14413    let is_incomplete = false;
14414    handle_completion_request(
14415        "obj.|<>",
14416        vec!["a", "ab", "abc"],
14417        is_incomplete,
14418        counter.clone(),
14419        &mut cx,
14420    )
14421    .await;
14422    cx.run_until_parked();
14423    assert_eq!(counter.load(atomic::Ordering::Acquire), 1);
14424    cx.assert_editor_state("obj.ˇ");
14425    check_displayed_completions(vec!["a", "ab", "abc"], &mut cx);
14426
14427    // Type "a" - filters existing completions
14428    cx.simulate_keystroke("a");
14429    cx.run_until_parked();
14430    assert_eq!(counter.load(atomic::Ordering::Acquire), 1);
14431    cx.assert_editor_state("obj.aˇ");
14432    check_displayed_completions(vec!["a", "ab", "abc"], &mut cx);
14433
14434    // Type "b" - filters existing completions
14435    cx.simulate_keystroke("b");
14436    cx.run_until_parked();
14437    assert_eq!(counter.load(atomic::Ordering::Acquire), 1);
14438    cx.assert_editor_state("obj.abˇ");
14439    check_displayed_completions(vec!["ab", "abc"], &mut cx);
14440
14441    // Type "c" - filters existing completions
14442    cx.simulate_keystroke("c");
14443    cx.run_until_parked();
14444    assert_eq!(counter.load(atomic::Ordering::Acquire), 1);
14445    cx.assert_editor_state("obj.abcˇ");
14446    check_displayed_completions(vec!["abc"], &mut cx);
14447
14448    // Backspace to delete "c" - filters existing completions
14449    cx.update_editor(|editor, window, cx| {
14450        editor.backspace(&Backspace, window, cx);
14451    });
14452    cx.run_until_parked();
14453    assert_eq!(counter.load(atomic::Ordering::Acquire), 1);
14454    cx.assert_editor_state("obj.abˇ");
14455    check_displayed_completions(vec!["ab", "abc"], &mut cx);
14456
14457    // Moving cursor to the left dismisses menu.
14458    cx.update_editor(|editor, window, cx| {
14459        editor.move_left(&MoveLeft, window, cx);
14460    });
14461    cx.run_until_parked();
14462    assert_eq!(counter.load(atomic::Ordering::Acquire), 1);
14463    cx.assert_editor_state("obj.aˇb");
14464    cx.update_editor(|editor, _, _| {
14465        assert_eq!(editor.context_menu_visible(), false);
14466    });
14467
14468    // Type "b" - new request
14469    cx.simulate_keystroke("b");
14470    let is_incomplete = false;
14471    handle_completion_request(
14472        "obj.<ab|>a",
14473        vec!["ab", "abc"],
14474        is_incomplete,
14475        counter.clone(),
14476        &mut cx,
14477    )
14478    .await;
14479    cx.run_until_parked();
14480    assert_eq!(counter.load(atomic::Ordering::Acquire), 2);
14481    cx.assert_editor_state("obj.abˇb");
14482    check_displayed_completions(vec!["ab", "abc"], &mut cx);
14483
14484    // Backspace to delete "b" - since query was "ab" and is now "a", new request is made.
14485    cx.update_editor(|editor, window, cx| {
14486        editor.backspace(&Backspace, window, cx);
14487    });
14488    let is_incomplete = false;
14489    handle_completion_request(
14490        "obj.<a|>b",
14491        vec!["a", "ab", "abc"],
14492        is_incomplete,
14493        counter.clone(),
14494        &mut cx,
14495    )
14496    .await;
14497    cx.run_until_parked();
14498    assert_eq!(counter.load(atomic::Ordering::Acquire), 3);
14499    cx.assert_editor_state("obj.aˇb");
14500    check_displayed_completions(vec!["a", "ab", "abc"], &mut cx);
14501
14502    // Backspace to delete "a" - dismisses menu.
14503    cx.update_editor(|editor, window, cx| {
14504        editor.backspace(&Backspace, window, cx);
14505    });
14506    cx.run_until_parked();
14507    assert_eq!(counter.load(atomic::Ordering::Acquire), 3);
14508    cx.assert_editor_state("obj.ˇb");
14509    cx.update_editor(|editor, _, _| {
14510        assert_eq!(editor.context_menu_visible(), false);
14511    });
14512}
14513
14514#[gpui::test]
14515async fn test_word_completion(cx: &mut TestAppContext) {
14516    let lsp_fetch_timeout_ms = 10;
14517    init_test(cx, |language_settings| {
14518        language_settings.defaults.completions = Some(CompletionSettingsContent {
14519            words_min_length: Some(0),
14520            lsp_fetch_timeout_ms: Some(10),
14521            lsp_insert_mode: Some(LspInsertMode::Insert),
14522            ..Default::default()
14523        });
14524    });
14525
14526    let mut cx = EditorLspTestContext::new_rust(
14527        lsp::ServerCapabilities {
14528            completion_provider: Some(lsp::CompletionOptions {
14529                trigger_characters: Some(vec![".".to_string(), ":".to_string()]),
14530                ..lsp::CompletionOptions::default()
14531            }),
14532            signature_help_provider: Some(lsp::SignatureHelpOptions::default()),
14533            ..lsp::ServerCapabilities::default()
14534        },
14535        cx,
14536    )
14537    .await;
14538
14539    let throttle_completions = Arc::new(AtomicBool::new(false));
14540
14541    let lsp_throttle_completions = throttle_completions.clone();
14542    let _completion_requests_handler =
14543        cx.lsp
14544            .server
14545            .on_request::<lsp::request::Completion, _, _>(move |_, cx| {
14546                let lsp_throttle_completions = lsp_throttle_completions.clone();
14547                let cx = cx.clone();
14548                async move {
14549                    if lsp_throttle_completions.load(atomic::Ordering::Acquire) {
14550                        cx.background_executor()
14551                            .timer(Duration::from_millis(lsp_fetch_timeout_ms * 10))
14552                            .await;
14553                    }
14554                    Ok(Some(lsp::CompletionResponse::Array(vec![
14555                        lsp::CompletionItem {
14556                            label: "first".into(),
14557                            ..lsp::CompletionItem::default()
14558                        },
14559                        lsp::CompletionItem {
14560                            label: "last".into(),
14561                            ..lsp::CompletionItem::default()
14562                        },
14563                    ])))
14564                }
14565            });
14566
14567    cx.set_state(indoc! {"
14568        oneˇ
14569        two
14570        three
14571    "});
14572    cx.simulate_keystroke(".");
14573    cx.executor().run_until_parked();
14574    cx.condition(|editor, _| editor.context_menu_visible())
14575        .await;
14576    cx.update_editor(|editor, window, cx| {
14577        if let Some(CodeContextMenu::Completions(menu)) = editor.context_menu.borrow_mut().as_ref()
14578        {
14579            assert_eq!(
14580                completion_menu_entries(menu),
14581                &["first", "last"],
14582                "When LSP server is fast to reply, no fallback word completions are used"
14583            );
14584        } else {
14585            panic!("expected completion menu to be open");
14586        }
14587        editor.cancel(&Cancel, window, cx);
14588    });
14589    cx.executor().run_until_parked();
14590    cx.condition(|editor, _| !editor.context_menu_visible())
14591        .await;
14592
14593    throttle_completions.store(true, atomic::Ordering::Release);
14594    cx.simulate_keystroke(".");
14595    cx.executor()
14596        .advance_clock(Duration::from_millis(lsp_fetch_timeout_ms * 2));
14597    cx.executor().run_until_parked();
14598    cx.condition(|editor, _| editor.context_menu_visible())
14599        .await;
14600    cx.update_editor(|editor, _, _| {
14601        if let Some(CodeContextMenu::Completions(menu)) = editor.context_menu.borrow_mut().as_ref()
14602        {
14603            assert_eq!(completion_menu_entries(menu), &["one", "three", "two"],
14604                "When LSP server is slow, document words can be shown instead, if configured accordingly");
14605        } else {
14606            panic!("expected completion menu to be open");
14607        }
14608    });
14609}
14610
14611#[gpui::test]
14612async fn test_word_completions_do_not_duplicate_lsp_ones(cx: &mut TestAppContext) {
14613    init_test(cx, |language_settings| {
14614        language_settings.defaults.completions = Some(CompletionSettingsContent {
14615            words: Some(WordsCompletionMode::Enabled),
14616            words_min_length: Some(0),
14617            lsp_insert_mode: Some(LspInsertMode::Insert),
14618            ..Default::default()
14619        });
14620    });
14621
14622    let mut cx = EditorLspTestContext::new_rust(
14623        lsp::ServerCapabilities {
14624            completion_provider: Some(lsp::CompletionOptions {
14625                trigger_characters: Some(vec![".".to_string(), ":".to_string()]),
14626                ..lsp::CompletionOptions::default()
14627            }),
14628            signature_help_provider: Some(lsp::SignatureHelpOptions::default()),
14629            ..lsp::ServerCapabilities::default()
14630        },
14631        cx,
14632    )
14633    .await;
14634
14635    let _completion_requests_handler =
14636        cx.lsp
14637            .server
14638            .on_request::<lsp::request::Completion, _, _>(move |_, _| async move {
14639                Ok(Some(lsp::CompletionResponse::Array(vec![
14640                    lsp::CompletionItem {
14641                        label: "first".into(),
14642                        ..lsp::CompletionItem::default()
14643                    },
14644                    lsp::CompletionItem {
14645                        label: "last".into(),
14646                        ..lsp::CompletionItem::default()
14647                    },
14648                ])))
14649            });
14650
14651    cx.set_state(indoc! {"ˇ
14652        first
14653        last
14654        second
14655    "});
14656    cx.simulate_keystroke(".");
14657    cx.executor().run_until_parked();
14658    cx.condition(|editor, _| editor.context_menu_visible())
14659        .await;
14660    cx.update_editor(|editor, _, _| {
14661        if let Some(CodeContextMenu::Completions(menu)) = editor.context_menu.borrow_mut().as_ref()
14662        {
14663            assert_eq!(
14664                completion_menu_entries(menu),
14665                &["first", "last", "second"],
14666                "Word completions that has the same edit as the any of the LSP ones, should not be proposed"
14667            );
14668        } else {
14669            panic!("expected completion menu to be open");
14670        }
14671    });
14672}
14673
14674#[gpui::test]
14675async fn test_word_completions_continue_on_typing(cx: &mut TestAppContext) {
14676    init_test(cx, |language_settings| {
14677        language_settings.defaults.completions = Some(CompletionSettingsContent {
14678            words: Some(WordsCompletionMode::Disabled),
14679            words_min_length: Some(0),
14680            lsp_insert_mode: Some(LspInsertMode::Insert),
14681            ..Default::default()
14682        });
14683    });
14684
14685    let mut cx = EditorLspTestContext::new_rust(
14686        lsp::ServerCapabilities {
14687            completion_provider: Some(lsp::CompletionOptions {
14688                trigger_characters: Some(vec![".".to_string(), ":".to_string()]),
14689                ..lsp::CompletionOptions::default()
14690            }),
14691            signature_help_provider: Some(lsp::SignatureHelpOptions::default()),
14692            ..lsp::ServerCapabilities::default()
14693        },
14694        cx,
14695    )
14696    .await;
14697
14698    let _completion_requests_handler =
14699        cx.lsp
14700            .server
14701            .on_request::<lsp::request::Completion, _, _>(move |_, _| async move {
14702                panic!("LSP completions should not be queried when dealing with word completions")
14703            });
14704
14705    cx.set_state(indoc! {"ˇ
14706        first
14707        last
14708        second
14709    "});
14710    cx.update_editor(|editor, window, cx| {
14711        editor.show_word_completions(&ShowWordCompletions, window, cx);
14712    });
14713    cx.executor().run_until_parked();
14714    cx.condition(|editor, _| editor.context_menu_visible())
14715        .await;
14716    cx.update_editor(|editor, _, _| {
14717        if let Some(CodeContextMenu::Completions(menu)) = editor.context_menu.borrow_mut().as_ref()
14718        {
14719            assert_eq!(
14720                completion_menu_entries(menu),
14721                &["first", "last", "second"],
14722                "`ShowWordCompletions` action should show word completions"
14723            );
14724        } else {
14725            panic!("expected completion menu to be open");
14726        }
14727    });
14728
14729    cx.simulate_keystroke("l");
14730    cx.executor().run_until_parked();
14731    cx.condition(|editor, _| editor.context_menu_visible())
14732        .await;
14733    cx.update_editor(|editor, _, _| {
14734        if let Some(CodeContextMenu::Completions(menu)) = editor.context_menu.borrow_mut().as_ref()
14735        {
14736            assert_eq!(
14737                completion_menu_entries(menu),
14738                &["last"],
14739                "After showing word completions, further editing should filter them and not query the LSP"
14740            );
14741        } else {
14742            panic!("expected completion menu to be open");
14743        }
14744    });
14745}
14746
14747#[gpui::test]
14748async fn test_word_completions_usually_skip_digits(cx: &mut TestAppContext) {
14749    init_test(cx, |language_settings| {
14750        language_settings.defaults.completions = Some(CompletionSettingsContent {
14751            words_min_length: Some(0),
14752            lsp: Some(false),
14753            lsp_insert_mode: Some(LspInsertMode::Insert),
14754            ..Default::default()
14755        });
14756    });
14757
14758    let mut cx = EditorLspTestContext::new_rust(lsp::ServerCapabilities::default(), cx).await;
14759
14760    cx.set_state(indoc! {"ˇ
14761        0_usize
14762        let
14763        33
14764        4.5f32
14765    "});
14766    cx.update_editor(|editor, window, cx| {
14767        editor.show_completions(&ShowCompletions::default(), window, cx);
14768    });
14769    cx.executor().run_until_parked();
14770    cx.condition(|editor, _| editor.context_menu_visible())
14771        .await;
14772    cx.update_editor(|editor, window, cx| {
14773        if let Some(CodeContextMenu::Completions(menu)) = editor.context_menu.borrow_mut().as_ref()
14774        {
14775            assert_eq!(
14776                completion_menu_entries(menu),
14777                &["let"],
14778                "With no digits in the completion query, no digits should be in the word completions"
14779            );
14780        } else {
14781            panic!("expected completion menu to be open");
14782        }
14783        editor.cancel(&Cancel, window, cx);
14784    });
14785
14786    cx.set_state(indoc! {"14787        0_usize
14788        let
14789        3
14790        33.35f32
14791    "});
14792    cx.update_editor(|editor, window, cx| {
14793        editor.show_completions(&ShowCompletions::default(), window, cx);
14794    });
14795    cx.executor().run_until_parked();
14796    cx.condition(|editor, _| editor.context_menu_visible())
14797        .await;
14798    cx.update_editor(|editor, _, _| {
14799        if let Some(CodeContextMenu::Completions(menu)) = editor.context_menu.borrow_mut().as_ref()
14800        {
14801            assert_eq!(completion_menu_entries(menu), &["33", "35f32"], "The digit is in the completion query, \
14802                return matching words with digits (`33`, `35f32`) but exclude query duplicates (`3`)");
14803        } else {
14804            panic!("expected completion menu to be open");
14805        }
14806    });
14807}
14808
14809#[gpui::test]
14810async fn test_word_completions_do_not_show_before_threshold(cx: &mut TestAppContext) {
14811    init_test(cx, |language_settings| {
14812        language_settings.defaults.completions = Some(CompletionSettingsContent {
14813            words: Some(WordsCompletionMode::Enabled),
14814            words_min_length: Some(3),
14815            lsp_insert_mode: Some(LspInsertMode::Insert),
14816            ..Default::default()
14817        });
14818    });
14819
14820    let mut cx = EditorLspTestContext::new_rust(lsp::ServerCapabilities::default(), cx).await;
14821    cx.set_state(indoc! {"ˇ
14822        wow
14823        wowen
14824        wowser
14825    "});
14826    cx.simulate_keystroke("w");
14827    cx.executor().run_until_parked();
14828    cx.update_editor(|editor, _, _| {
14829        if editor.context_menu.borrow_mut().is_some() {
14830            panic!(
14831                "expected completion menu to be hidden, as words completion threshold is not met"
14832            );
14833        }
14834    });
14835
14836    cx.update_editor(|editor, window, cx| {
14837        editor.show_word_completions(&ShowWordCompletions, window, cx);
14838    });
14839    cx.executor().run_until_parked();
14840    cx.update_editor(|editor, window, cx| {
14841        if let Some(CodeContextMenu::Completions(menu)) = editor.context_menu.borrow_mut().as_ref()
14842        {
14843            assert_eq!(completion_menu_entries(menu), &["wowser", "wowen", "wow"], "Even though the threshold is not met, invoking word completions with an action should provide the completions");
14844        } else {
14845            panic!("expected completion menu to be open after the word completions are called with an action");
14846        }
14847
14848        editor.cancel(&Cancel, window, cx);
14849    });
14850    cx.update_editor(|editor, _, _| {
14851        if editor.context_menu.borrow_mut().is_some() {
14852            panic!("expected completion menu to be hidden after canceling");
14853        }
14854    });
14855
14856    cx.simulate_keystroke("o");
14857    cx.executor().run_until_parked();
14858    cx.update_editor(|editor, _, _| {
14859        if editor.context_menu.borrow_mut().is_some() {
14860            panic!(
14861                "expected completion menu to be hidden, as words completion threshold is not met still"
14862            );
14863        }
14864    });
14865
14866    cx.simulate_keystroke("w");
14867    cx.executor().run_until_parked();
14868    cx.update_editor(|editor, _, _| {
14869        if let Some(CodeContextMenu::Completions(menu)) = editor.context_menu.borrow_mut().as_ref()
14870        {
14871            assert_eq!(completion_menu_entries(menu), &["wowen", "wowser"], "After word completion threshold is met, matching words should be shown, excluding the already typed word");
14872        } else {
14873            panic!("expected completion menu to be open after the word completions threshold is met");
14874        }
14875    });
14876}
14877
14878#[gpui::test]
14879async fn test_word_completions_disabled(cx: &mut TestAppContext) {
14880    init_test(cx, |language_settings| {
14881        language_settings.defaults.completions = Some(CompletionSettingsContent {
14882            words: Some(WordsCompletionMode::Enabled),
14883            words_min_length: Some(0),
14884            lsp_insert_mode: Some(LspInsertMode::Insert),
14885            ..Default::default()
14886        });
14887    });
14888
14889    let mut cx = EditorLspTestContext::new_rust(lsp::ServerCapabilities::default(), cx).await;
14890    cx.update_editor(|editor, _, _| {
14891        editor.disable_word_completions();
14892    });
14893    cx.set_state(indoc! {"ˇ
14894        wow
14895        wowen
14896        wowser
14897    "});
14898    cx.simulate_keystroke("w");
14899    cx.executor().run_until_parked();
14900    cx.update_editor(|editor, _, _| {
14901        if editor.context_menu.borrow_mut().is_some() {
14902            panic!(
14903                "expected completion menu to be hidden, as words completion are disabled for this editor"
14904            );
14905        }
14906    });
14907
14908    cx.update_editor(|editor, window, cx| {
14909        editor.show_word_completions(&ShowWordCompletions, window, cx);
14910    });
14911    cx.executor().run_until_parked();
14912    cx.update_editor(|editor, _, _| {
14913        if editor.context_menu.borrow_mut().is_some() {
14914            panic!(
14915                "expected completion menu to be hidden even if called for explicitly, as words completion are disabled for this editor"
14916            );
14917        }
14918    });
14919}
14920
14921fn gen_text_edit(params: &CompletionParams, text: &str) -> Option<lsp::CompletionTextEdit> {
14922    let position = || lsp::Position {
14923        line: params.text_document_position.position.line,
14924        character: params.text_document_position.position.character,
14925    };
14926    Some(lsp::CompletionTextEdit::Edit(lsp::TextEdit {
14927        range: lsp::Range {
14928            start: position(),
14929            end: position(),
14930        },
14931        new_text: text.to_string(),
14932    }))
14933}
14934
14935#[gpui::test]
14936async fn test_multiline_completion(cx: &mut TestAppContext) {
14937    init_test(cx, |_| {});
14938
14939    let fs = FakeFs::new(cx.executor());
14940    fs.insert_tree(
14941        path!("/a"),
14942        json!({
14943            "main.ts": "a",
14944        }),
14945    )
14946    .await;
14947
14948    let project = Project::test(fs, [path!("/a").as_ref()], cx).await;
14949    let language_registry = project.read_with(cx, |project, _| project.languages().clone());
14950    let typescript_language = Arc::new(Language::new(
14951        LanguageConfig {
14952            name: "TypeScript".into(),
14953            matcher: LanguageMatcher {
14954                path_suffixes: vec!["ts".to_string()],
14955                ..LanguageMatcher::default()
14956            },
14957            line_comments: vec!["// ".into()],
14958            ..LanguageConfig::default()
14959        },
14960        Some(tree_sitter_typescript::LANGUAGE_TYPESCRIPT.into()),
14961    ));
14962    language_registry.add(typescript_language.clone());
14963    let mut fake_servers = language_registry.register_fake_lsp(
14964        "TypeScript",
14965        FakeLspAdapter {
14966            capabilities: lsp::ServerCapabilities {
14967                completion_provider: Some(lsp::CompletionOptions {
14968                    trigger_characters: Some(vec![".".to_string(), ":".to_string()]),
14969                    ..lsp::CompletionOptions::default()
14970                }),
14971                signature_help_provider: Some(lsp::SignatureHelpOptions::default()),
14972                ..lsp::ServerCapabilities::default()
14973            },
14974            // Emulate vtsls label generation
14975            label_for_completion: Some(Box::new(|item, _| {
14976                let text = if let Some(description) = item
14977                    .label_details
14978                    .as_ref()
14979                    .and_then(|label_details| label_details.description.as_ref())
14980                {
14981                    format!("{} {}", item.label, description)
14982                } else if let Some(detail) = &item.detail {
14983                    format!("{} {}", item.label, detail)
14984                } else {
14985                    item.label.clone()
14986                };
14987                Some(language::CodeLabel::plain(text, None))
14988            })),
14989            ..FakeLspAdapter::default()
14990        },
14991    );
14992    let workspace = cx.add_window(|window, cx| Workspace::test_new(project.clone(), window, cx));
14993    let cx = &mut VisualTestContext::from_window(*workspace, cx);
14994    let worktree_id = workspace
14995        .update(cx, |workspace, _window, cx| {
14996            workspace.project().update(cx, |project, cx| {
14997                project.worktrees(cx).next().unwrap().read(cx).id()
14998            })
14999        })
15000        .unwrap();
15001    let _buffer = project
15002        .update(cx, |project, cx| {
15003            project.open_local_buffer_with_lsp(path!("/a/main.ts"), cx)
15004        })
15005        .await
15006        .unwrap();
15007    let editor = workspace
15008        .update(cx, |workspace, window, cx| {
15009            workspace.open_path((worktree_id, rel_path("main.ts")), None, true, window, cx)
15010        })
15011        .unwrap()
15012        .await
15013        .unwrap()
15014        .downcast::<Editor>()
15015        .unwrap();
15016    let fake_server = fake_servers.next().await.unwrap();
15017
15018    let multiline_label = "StickyHeaderExcerpt {\n            excerpt,\n            next_excerpt_controls_present,\n            next_buffer_row,\n        }: StickyHeaderExcerpt<'_>,";
15019    let multiline_label_2 = "a\nb\nc\n";
15020    let multiline_detail = "[]struct {\n\tSignerId\tstruct {\n\t\tIssuer\t\t\tstring\t`json:\"issuer\"`\n\t\tSubjectSerialNumber\"`\n}}";
15021    let multiline_description = "d\ne\nf\n";
15022    let multiline_detail_2 = "g\nh\ni\n";
15023
15024    let mut completion_handle = fake_server.set_request_handler::<lsp::request::Completion, _, _>(
15025        move |params, _| async move {
15026            Ok(Some(lsp::CompletionResponse::Array(vec![
15027                lsp::CompletionItem {
15028                    label: multiline_label.to_string(),
15029                    text_edit: gen_text_edit(&params, "new_text_1"),
15030                    ..lsp::CompletionItem::default()
15031                },
15032                lsp::CompletionItem {
15033                    label: "single line label 1".to_string(),
15034                    detail: Some(multiline_detail.to_string()),
15035                    text_edit: gen_text_edit(&params, "new_text_2"),
15036                    ..lsp::CompletionItem::default()
15037                },
15038                lsp::CompletionItem {
15039                    label: "single line label 2".to_string(),
15040                    label_details: Some(lsp::CompletionItemLabelDetails {
15041                        description: Some(multiline_description.to_string()),
15042                        detail: None,
15043                    }),
15044                    text_edit: gen_text_edit(&params, "new_text_2"),
15045                    ..lsp::CompletionItem::default()
15046                },
15047                lsp::CompletionItem {
15048                    label: multiline_label_2.to_string(),
15049                    detail: Some(multiline_detail_2.to_string()),
15050                    text_edit: gen_text_edit(&params, "new_text_3"),
15051                    ..lsp::CompletionItem::default()
15052                },
15053                lsp::CompletionItem {
15054                    label: "Label with many     spaces and \t but without newlines".to_string(),
15055                    detail: Some(
15056                        "Details with many     spaces and \t but without newlines".to_string(),
15057                    ),
15058                    text_edit: gen_text_edit(&params, "new_text_4"),
15059                    ..lsp::CompletionItem::default()
15060                },
15061            ])))
15062        },
15063    );
15064
15065    editor.update_in(cx, |editor, window, cx| {
15066        cx.focus_self(window);
15067        editor.move_to_end(&MoveToEnd, window, cx);
15068        editor.handle_input(".", window, cx);
15069    });
15070    cx.run_until_parked();
15071    completion_handle.next().await.unwrap();
15072
15073    editor.update(cx, |editor, _| {
15074        assert!(editor.context_menu_visible());
15075        if let Some(CodeContextMenu::Completions(menu)) = editor.context_menu.borrow_mut().as_ref()
15076        {
15077            let completion_labels = menu
15078                .completions
15079                .borrow()
15080                .iter()
15081                .map(|c| c.label.text.clone())
15082                .collect::<Vec<_>>();
15083            assert_eq!(
15084                completion_labels,
15085                &[
15086                    "StickyHeaderExcerpt { excerpt, next_excerpt_controls_present, next_buffer_row, }: StickyHeaderExcerpt<'_>,",
15087                    "single line label 1 []struct { SignerId struct { Issuer string `json:\"issuer\"` SubjectSerialNumber\"` }}",
15088                    "single line label 2 d e f ",
15089                    "a b c g h i ",
15090                    "Label with many     spaces and \t but without newlines Details with many     spaces and \t but without newlines",
15091                ],
15092                "Completion items should have their labels without newlines, also replacing excessive whitespaces. Completion items without newlines should not be altered.",
15093            );
15094
15095            for completion in menu
15096                .completions
15097                .borrow()
15098                .iter() {
15099                    assert_eq!(
15100                        completion.label.filter_range,
15101                        0..completion.label.text.len(),
15102                        "Adjusted completion items should still keep their filter ranges for the entire label. Item: {completion:?}"
15103                    );
15104                }
15105        } else {
15106            panic!("expected completion menu to be open");
15107        }
15108    });
15109}
15110
15111#[gpui::test]
15112async fn test_completion_page_up_down_keys(cx: &mut TestAppContext) {
15113    init_test(cx, |_| {});
15114    let mut cx = EditorLspTestContext::new_rust(
15115        lsp::ServerCapabilities {
15116            completion_provider: Some(lsp::CompletionOptions {
15117                trigger_characters: Some(vec![".".to_string()]),
15118                ..Default::default()
15119            }),
15120            ..Default::default()
15121        },
15122        cx,
15123    )
15124    .await;
15125    cx.lsp
15126        .set_request_handler::<lsp::request::Completion, _, _>(move |_, _| async move {
15127            Ok(Some(lsp::CompletionResponse::Array(vec![
15128                lsp::CompletionItem {
15129                    label: "first".into(),
15130                    ..Default::default()
15131                },
15132                lsp::CompletionItem {
15133                    label: "last".into(),
15134                    ..Default::default()
15135                },
15136            ])))
15137        });
15138    cx.set_state("variableˇ");
15139    cx.simulate_keystroke(".");
15140    cx.executor().run_until_parked();
15141
15142    cx.update_editor(|editor, _, _| {
15143        if let Some(CodeContextMenu::Completions(menu)) = editor.context_menu.borrow_mut().as_ref()
15144        {
15145            assert_eq!(completion_menu_entries(menu), &["first", "last"]);
15146        } else {
15147            panic!("expected completion menu to be open");
15148        }
15149    });
15150
15151    cx.update_editor(|editor, window, cx| {
15152        editor.move_page_down(&MovePageDown::default(), window, cx);
15153        if let Some(CodeContextMenu::Completions(menu)) = editor.context_menu.borrow_mut().as_ref()
15154        {
15155            assert!(
15156                menu.selected_item == 1,
15157                "expected PageDown to select the last item from the context menu"
15158            );
15159        } else {
15160            panic!("expected completion menu to stay open after PageDown");
15161        }
15162    });
15163
15164    cx.update_editor(|editor, window, cx| {
15165        editor.move_page_up(&MovePageUp::default(), window, cx);
15166        if let Some(CodeContextMenu::Completions(menu)) = editor.context_menu.borrow_mut().as_ref()
15167        {
15168            assert!(
15169                menu.selected_item == 0,
15170                "expected PageUp to select the first item from the context menu"
15171            );
15172        } else {
15173            panic!("expected completion menu to stay open after PageUp");
15174        }
15175    });
15176}
15177
15178#[gpui::test]
15179async fn test_as_is_completions(cx: &mut TestAppContext) {
15180    init_test(cx, |_| {});
15181    let mut cx = EditorLspTestContext::new_rust(
15182        lsp::ServerCapabilities {
15183            completion_provider: Some(lsp::CompletionOptions {
15184                ..Default::default()
15185            }),
15186            ..Default::default()
15187        },
15188        cx,
15189    )
15190    .await;
15191    cx.lsp
15192        .set_request_handler::<lsp::request::Completion, _, _>(move |_, _| async move {
15193            Ok(Some(lsp::CompletionResponse::Array(vec![
15194                lsp::CompletionItem {
15195                    label: "unsafe".into(),
15196                    text_edit: Some(lsp::CompletionTextEdit::Edit(lsp::TextEdit {
15197                        range: lsp::Range {
15198                            start: lsp::Position {
15199                                line: 1,
15200                                character: 2,
15201                            },
15202                            end: lsp::Position {
15203                                line: 1,
15204                                character: 3,
15205                            },
15206                        },
15207                        new_text: "unsafe".to_string(),
15208                    })),
15209                    insert_text_mode: Some(lsp::InsertTextMode::AS_IS),
15210                    ..Default::default()
15211                },
15212            ])))
15213        });
15214    cx.set_state("fn a() {}\n");
15215    cx.executor().run_until_parked();
15216    cx.update_editor(|editor, window, cx| {
15217        editor.show_completions(
15218            &ShowCompletions {
15219                trigger: Some("\n".into()),
15220            },
15221            window,
15222            cx,
15223        );
15224    });
15225    cx.executor().run_until_parked();
15226
15227    cx.update_editor(|editor, window, cx| {
15228        editor.confirm_completion(&Default::default(), window, cx)
15229    });
15230    cx.executor().run_until_parked();
15231    cx.assert_editor_state("fn a() {}\n  unsafeˇ");
15232}
15233
15234#[gpui::test]
15235async fn test_panic_during_c_completions(cx: &mut TestAppContext) {
15236    init_test(cx, |_| {});
15237    let language =
15238        Arc::try_unwrap(languages::language("c", tree_sitter_c::LANGUAGE.into())).unwrap();
15239    let mut cx = EditorLspTestContext::new(
15240        language,
15241        lsp::ServerCapabilities {
15242            completion_provider: Some(lsp::CompletionOptions {
15243                ..lsp::CompletionOptions::default()
15244            }),
15245            ..lsp::ServerCapabilities::default()
15246        },
15247        cx,
15248    )
15249    .await;
15250
15251    cx.set_state(
15252        "#ifndef BAR_H
15253#define BAR_H
15254
15255#include <stdbool.h>
15256
15257int fn_branch(bool do_branch1, bool do_branch2);
15258
15259#endif // BAR_H
15260ˇ",
15261    );
15262    cx.executor().run_until_parked();
15263    cx.update_editor(|editor, window, cx| {
15264        editor.handle_input("#", window, cx);
15265    });
15266    cx.executor().run_until_parked();
15267    cx.update_editor(|editor, window, cx| {
15268        editor.handle_input("i", window, cx);
15269    });
15270    cx.executor().run_until_parked();
15271    cx.update_editor(|editor, window, cx| {
15272        editor.handle_input("n", window, cx);
15273    });
15274    cx.executor().run_until_parked();
15275    cx.assert_editor_state(
15276        "#ifndef BAR_H
15277#define BAR_H
15278
15279#include <stdbool.h>
15280
15281int fn_branch(bool do_branch1, bool do_branch2);
15282
15283#endif // BAR_H
15284#inˇ",
15285    );
15286
15287    cx.lsp
15288        .set_request_handler::<lsp::request::Completion, _, _>(move |_, _| async move {
15289            Ok(Some(lsp::CompletionResponse::List(lsp::CompletionList {
15290                is_incomplete: false,
15291                item_defaults: None,
15292                items: vec![lsp::CompletionItem {
15293                    kind: Some(lsp::CompletionItemKind::SNIPPET),
15294                    label_details: Some(lsp::CompletionItemLabelDetails {
15295                        detail: Some("header".to_string()),
15296                        description: None,
15297                    }),
15298                    label: " include".to_string(),
15299                    text_edit: Some(lsp::CompletionTextEdit::Edit(lsp::TextEdit {
15300                        range: lsp::Range {
15301                            start: lsp::Position {
15302                                line: 8,
15303                                character: 1,
15304                            },
15305                            end: lsp::Position {
15306                                line: 8,
15307                                character: 1,
15308                            },
15309                        },
15310                        new_text: "include \"$0\"".to_string(),
15311                    })),
15312                    sort_text: Some("40b67681include".to_string()),
15313                    insert_text_format: Some(lsp::InsertTextFormat::SNIPPET),
15314                    filter_text: Some("include".to_string()),
15315                    insert_text: Some("include \"$0\"".to_string()),
15316                    ..lsp::CompletionItem::default()
15317                }],
15318            })))
15319        });
15320    cx.update_editor(|editor, window, cx| {
15321        editor.show_completions(&ShowCompletions { trigger: None }, window, cx);
15322    });
15323    cx.executor().run_until_parked();
15324    cx.update_editor(|editor, window, cx| {
15325        editor.confirm_completion(&ConfirmCompletion::default(), window, cx)
15326    });
15327    cx.executor().run_until_parked();
15328    cx.assert_editor_state(
15329        "#ifndef BAR_H
15330#define BAR_H
15331
15332#include <stdbool.h>
15333
15334int fn_branch(bool do_branch1, bool do_branch2);
15335
15336#endif // BAR_H
15337#include \"ˇ\"",
15338    );
15339
15340    cx.lsp
15341        .set_request_handler::<lsp::request::Completion, _, _>(move |_, _| async move {
15342            Ok(Some(lsp::CompletionResponse::List(lsp::CompletionList {
15343                is_incomplete: true,
15344                item_defaults: None,
15345                items: vec![lsp::CompletionItem {
15346                    kind: Some(lsp::CompletionItemKind::FILE),
15347                    label: "AGL/".to_string(),
15348                    text_edit: Some(lsp::CompletionTextEdit::Edit(lsp::TextEdit {
15349                        range: lsp::Range {
15350                            start: lsp::Position {
15351                                line: 8,
15352                                character: 10,
15353                            },
15354                            end: lsp::Position {
15355                                line: 8,
15356                                character: 11,
15357                            },
15358                        },
15359                        new_text: "AGL/".to_string(),
15360                    })),
15361                    sort_text: Some("40b67681AGL/".to_string()),
15362                    insert_text_format: Some(lsp::InsertTextFormat::PLAIN_TEXT),
15363                    filter_text: Some("AGL/".to_string()),
15364                    insert_text: Some("AGL/".to_string()),
15365                    ..lsp::CompletionItem::default()
15366                }],
15367            })))
15368        });
15369    cx.update_editor(|editor, window, cx| {
15370        editor.show_completions(&ShowCompletions { trigger: None }, window, cx);
15371    });
15372    cx.executor().run_until_parked();
15373    cx.update_editor(|editor, window, cx| {
15374        editor.confirm_completion(&ConfirmCompletion::default(), window, cx)
15375    });
15376    cx.executor().run_until_parked();
15377    cx.assert_editor_state(
15378        r##"#ifndef BAR_H
15379#define BAR_H
15380
15381#include <stdbool.h>
15382
15383int fn_branch(bool do_branch1, bool do_branch2);
15384
15385#endif // BAR_H
15386#include "AGL/ˇ"##,
15387    );
15388
15389    cx.update_editor(|editor, window, cx| {
15390        editor.handle_input("\"", window, cx);
15391    });
15392    cx.executor().run_until_parked();
15393    cx.assert_editor_state(
15394        r##"#ifndef BAR_H
15395#define BAR_H
15396
15397#include <stdbool.h>
15398
15399int fn_branch(bool do_branch1, bool do_branch2);
15400
15401#endif // BAR_H
15402#include "AGL/"ˇ"##,
15403    );
15404}
15405
15406#[gpui::test]
15407async fn test_no_duplicated_completion_requests(cx: &mut TestAppContext) {
15408    init_test(cx, |_| {});
15409
15410    let mut cx = EditorLspTestContext::new_rust(
15411        lsp::ServerCapabilities {
15412            completion_provider: Some(lsp::CompletionOptions {
15413                trigger_characters: Some(vec![".".to_string()]),
15414                resolve_provider: Some(true),
15415                ..Default::default()
15416            }),
15417            ..Default::default()
15418        },
15419        cx,
15420    )
15421    .await;
15422
15423    cx.set_state("fn main() { let a = 2ˇ; }");
15424    cx.simulate_keystroke(".");
15425    let completion_item = lsp::CompletionItem {
15426        label: "Some".into(),
15427        kind: Some(lsp::CompletionItemKind::SNIPPET),
15428        detail: Some("Wrap the expression in an `Option::Some`".to_string()),
15429        documentation: Some(lsp::Documentation::MarkupContent(lsp::MarkupContent {
15430            kind: lsp::MarkupKind::Markdown,
15431            value: "```rust\nSome(2)\n```".to_string(),
15432        })),
15433        deprecated: Some(false),
15434        sort_text: Some("Some".to_string()),
15435        filter_text: Some("Some".to_string()),
15436        insert_text_format: Some(lsp::InsertTextFormat::SNIPPET),
15437        text_edit: Some(lsp::CompletionTextEdit::Edit(lsp::TextEdit {
15438            range: lsp::Range {
15439                start: lsp::Position {
15440                    line: 0,
15441                    character: 22,
15442                },
15443                end: lsp::Position {
15444                    line: 0,
15445                    character: 22,
15446                },
15447            },
15448            new_text: "Some(2)".to_string(),
15449        })),
15450        additional_text_edits: Some(vec![lsp::TextEdit {
15451            range: lsp::Range {
15452                start: lsp::Position {
15453                    line: 0,
15454                    character: 20,
15455                },
15456                end: lsp::Position {
15457                    line: 0,
15458                    character: 22,
15459                },
15460            },
15461            new_text: "".to_string(),
15462        }]),
15463        ..Default::default()
15464    };
15465
15466    let closure_completion_item = completion_item.clone();
15467    let counter = Arc::new(AtomicUsize::new(0));
15468    let counter_clone = counter.clone();
15469    let mut request = cx.set_request_handler::<lsp::request::Completion, _, _>(move |_, _, _| {
15470        let task_completion_item = closure_completion_item.clone();
15471        counter_clone.fetch_add(1, atomic::Ordering::Release);
15472        async move {
15473            Ok(Some(lsp::CompletionResponse::List(lsp::CompletionList {
15474                is_incomplete: true,
15475                item_defaults: None,
15476                items: vec![task_completion_item],
15477            })))
15478        }
15479    });
15480
15481    cx.condition(|editor, _| editor.context_menu_visible())
15482        .await;
15483    cx.assert_editor_state("fn main() { let a = 2.ˇ; }");
15484    assert!(request.next().await.is_some());
15485    assert_eq!(counter.load(atomic::Ordering::Acquire), 1);
15486
15487    cx.simulate_keystrokes("S o m");
15488    cx.condition(|editor, _| editor.context_menu_visible())
15489        .await;
15490    cx.assert_editor_state("fn main() { let a = 2.Somˇ; }");
15491    assert!(request.next().await.is_some());
15492    assert!(request.next().await.is_some());
15493    assert!(request.next().await.is_some());
15494    request.close();
15495    assert!(request.next().await.is_none());
15496    assert_eq!(
15497        counter.load(atomic::Ordering::Acquire),
15498        4,
15499        "With the completions menu open, only one LSP request should happen per input"
15500    );
15501}
15502
15503#[gpui::test]
15504async fn test_toggle_comment(cx: &mut TestAppContext) {
15505    init_test(cx, |_| {});
15506    let mut cx = EditorTestContext::new(cx).await;
15507    let language = Arc::new(Language::new(
15508        LanguageConfig {
15509            line_comments: vec!["// ".into(), "//! ".into(), "/// ".into()],
15510            ..Default::default()
15511        },
15512        Some(tree_sitter_rust::LANGUAGE.into()),
15513    ));
15514    cx.update_buffer(|buffer, cx| buffer.set_language(Some(language), cx));
15515
15516    // If multiple selections intersect a line, the line is only toggled once.
15517    cx.set_state(indoc! {"
15518        fn a() {
15519            «//b();
15520            ˇ»// «c();
15521            //ˇ»  d();
15522        }
15523    "});
15524
15525    cx.update_editor(|e, window, cx| e.toggle_comments(&ToggleComments::default(), window, cx));
15526
15527    cx.assert_editor_state(indoc! {"
15528        fn a() {
15529            «b();
15530            c();
15531            ˇ» d();
15532        }
15533    "});
15534
15535    // The comment prefix is inserted at the same column for every line in a
15536    // selection.
15537    cx.update_editor(|e, window, cx| e.toggle_comments(&ToggleComments::default(), window, cx));
15538
15539    cx.assert_editor_state(indoc! {"
15540        fn a() {
15541            // «b();
15542            // c();
15543            ˇ»//  d();
15544        }
15545    "});
15546
15547    // If a selection ends at the beginning of a line, that line is not toggled.
15548    cx.set_selections_state(indoc! {"
15549        fn a() {
15550            // b();
15551            «// c();
15552        ˇ»    //  d();
15553        }
15554    "});
15555
15556    cx.update_editor(|e, window, cx| e.toggle_comments(&ToggleComments::default(), window, cx));
15557
15558    cx.assert_editor_state(indoc! {"
15559        fn a() {
15560            // b();
15561            «c();
15562        ˇ»    //  d();
15563        }
15564    "});
15565
15566    // If a selection span a single line and is empty, the line is toggled.
15567    cx.set_state(indoc! {"
15568        fn a() {
15569            a();
15570            b();
15571        ˇ
15572        }
15573    "});
15574
15575    cx.update_editor(|e, window, cx| e.toggle_comments(&ToggleComments::default(), window, cx));
15576
15577    cx.assert_editor_state(indoc! {"
15578        fn a() {
15579            a();
15580            b();
15581        //•ˇ
15582        }
15583    "});
15584
15585    // If a selection span multiple lines, empty lines are not toggled.
15586    cx.set_state(indoc! {"
15587        fn a() {
15588            «a();
15589
15590            c();ˇ»
15591        }
15592    "});
15593
15594    cx.update_editor(|e, window, cx| e.toggle_comments(&ToggleComments::default(), window, cx));
15595
15596    cx.assert_editor_state(indoc! {"
15597        fn a() {
15598            // «a();
15599
15600            // c();ˇ»
15601        }
15602    "});
15603
15604    // If a selection includes multiple comment prefixes, all lines are uncommented.
15605    cx.set_state(indoc! {"
15606        fn a() {
15607            «// a();
15608            /// b();
15609            //! c();ˇ»
15610        }
15611    "});
15612
15613    cx.update_editor(|e, window, cx| e.toggle_comments(&ToggleComments::default(), window, cx));
15614
15615    cx.assert_editor_state(indoc! {"
15616        fn a() {
15617            «a();
15618            b();
15619            c();ˇ»
15620        }
15621    "});
15622}
15623
15624#[gpui::test]
15625async fn test_toggle_comment_ignore_indent(cx: &mut TestAppContext) {
15626    init_test(cx, |_| {});
15627    let mut cx = EditorTestContext::new(cx).await;
15628    let language = Arc::new(Language::new(
15629        LanguageConfig {
15630            line_comments: vec!["// ".into(), "//! ".into(), "/// ".into()],
15631            ..Default::default()
15632        },
15633        Some(tree_sitter_rust::LANGUAGE.into()),
15634    ));
15635    cx.update_buffer(|buffer, cx| buffer.set_language(Some(language), cx));
15636
15637    let toggle_comments = &ToggleComments {
15638        advance_downwards: false,
15639        ignore_indent: true,
15640    };
15641
15642    // If multiple selections intersect a line, the line is only toggled once.
15643    cx.set_state(indoc! {"
15644        fn a() {
15645        //    «b();
15646        //    c();
15647        //    ˇ» d();
15648        }
15649    "});
15650
15651    cx.update_editor(|e, window, cx| e.toggle_comments(toggle_comments, window, cx));
15652
15653    cx.assert_editor_state(indoc! {"
15654        fn a() {
15655            «b();
15656            c();
15657            ˇ» d();
15658        }
15659    "});
15660
15661    // The comment prefix is inserted at the beginning of each line
15662    cx.update_editor(|e, window, cx| e.toggle_comments(toggle_comments, window, cx));
15663
15664    cx.assert_editor_state(indoc! {"
15665        fn a() {
15666        //    «b();
15667        //    c();
15668        //    ˇ» d();
15669        }
15670    "});
15671
15672    // If a selection ends at the beginning of a line, that line is not toggled.
15673    cx.set_selections_state(indoc! {"
15674        fn a() {
15675        //    b();
15676        //    «c();
15677        ˇ»//     d();
15678        }
15679    "});
15680
15681    cx.update_editor(|e, window, cx| e.toggle_comments(toggle_comments, window, cx));
15682
15683    cx.assert_editor_state(indoc! {"
15684        fn a() {
15685        //    b();
15686            «c();
15687        ˇ»//     d();
15688        }
15689    "});
15690
15691    // If a selection span a single line and is empty, the line is toggled.
15692    cx.set_state(indoc! {"
15693        fn a() {
15694            a();
15695            b();
15696        ˇ
15697        }
15698    "});
15699
15700    cx.update_editor(|e, window, cx| e.toggle_comments(toggle_comments, window, cx));
15701
15702    cx.assert_editor_state(indoc! {"
15703        fn a() {
15704            a();
15705            b();
15706        //ˇ
15707        }
15708    "});
15709
15710    // If a selection span multiple lines, empty lines are not toggled.
15711    cx.set_state(indoc! {"
15712        fn a() {
15713            «a();
15714
15715            c();ˇ»
15716        }
15717    "});
15718
15719    cx.update_editor(|e, window, cx| e.toggle_comments(toggle_comments, window, cx));
15720
15721    cx.assert_editor_state(indoc! {"
15722        fn a() {
15723        //    «a();
15724
15725        //    c();ˇ»
15726        }
15727    "});
15728
15729    // If a selection includes multiple comment prefixes, all lines are uncommented.
15730    cx.set_state(indoc! {"
15731        fn a() {
15732        //    «a();
15733        ///    b();
15734        //!    c();ˇ»
15735        }
15736    "});
15737
15738    cx.update_editor(|e, window, cx| e.toggle_comments(toggle_comments, window, cx));
15739
15740    cx.assert_editor_state(indoc! {"
15741        fn a() {
15742            «a();
15743            b();
15744            c();ˇ»
15745        }
15746    "});
15747}
15748
15749#[gpui::test]
15750async fn test_advance_downward_on_toggle_comment(cx: &mut TestAppContext) {
15751    init_test(cx, |_| {});
15752
15753    let language = Arc::new(Language::new(
15754        LanguageConfig {
15755            line_comments: vec!["// ".into()],
15756            ..Default::default()
15757        },
15758        Some(tree_sitter_rust::LANGUAGE.into()),
15759    ));
15760
15761    let mut cx = EditorTestContext::new(cx).await;
15762
15763    cx.language_registry().add(language.clone());
15764    cx.update_buffer(|buffer, cx| {
15765        buffer.set_language(Some(language), cx);
15766    });
15767
15768    let toggle_comments = &ToggleComments {
15769        advance_downwards: true,
15770        ignore_indent: false,
15771    };
15772
15773    // Single cursor on one line -> advance
15774    // Cursor moves horizontally 3 characters as well on non-blank line
15775    cx.set_state(indoc!(
15776        "fn a() {
15777             ˇdog();
15778             cat();
15779        }"
15780    ));
15781    cx.update_editor(|editor, window, cx| {
15782        editor.toggle_comments(toggle_comments, window, cx);
15783    });
15784    cx.assert_editor_state(indoc!(
15785        "fn a() {
15786             // dog();
15787             catˇ();
15788        }"
15789    ));
15790
15791    // Single selection on one line -> don't advance
15792    cx.set_state(indoc!(
15793        "fn a() {
15794             «dog()ˇ»;
15795             cat();
15796        }"
15797    ));
15798    cx.update_editor(|editor, window, cx| {
15799        editor.toggle_comments(toggle_comments, window, cx);
15800    });
15801    cx.assert_editor_state(indoc!(
15802        "fn a() {
15803             // «dog()ˇ»;
15804             cat();
15805        }"
15806    ));
15807
15808    // Multiple cursors on one line -> advance
15809    cx.set_state(indoc!(
15810        "fn a() {
15811             ˇdˇog();
15812             cat();
15813        }"
15814    ));
15815    cx.update_editor(|editor, window, cx| {
15816        editor.toggle_comments(toggle_comments, window, cx);
15817    });
15818    cx.assert_editor_state(indoc!(
15819        "fn a() {
15820             // dog();
15821             catˇ(ˇ);
15822        }"
15823    ));
15824
15825    // Multiple cursors on one line, with selection -> don't advance
15826    cx.set_state(indoc!(
15827        "fn a() {
15828             ˇdˇog«()ˇ»;
15829             cat();
15830        }"
15831    ));
15832    cx.update_editor(|editor, window, cx| {
15833        editor.toggle_comments(toggle_comments, window, cx);
15834    });
15835    cx.assert_editor_state(indoc!(
15836        "fn a() {
15837             // ˇdˇog«()ˇ»;
15838             cat();
15839        }"
15840    ));
15841
15842    // Single cursor on one line -> advance
15843    // Cursor moves to column 0 on blank line
15844    cx.set_state(indoc!(
15845        "fn a() {
15846             ˇdog();
15847
15848             cat();
15849        }"
15850    ));
15851    cx.update_editor(|editor, window, cx| {
15852        editor.toggle_comments(toggle_comments, window, cx);
15853    });
15854    cx.assert_editor_state(indoc!(
15855        "fn a() {
15856             // dog();
15857        ˇ
15858             cat();
15859        }"
15860    ));
15861
15862    // Single cursor on one line -> advance
15863    // Cursor starts and ends at column 0
15864    cx.set_state(indoc!(
15865        "fn a() {
15866         ˇ    dog();
15867             cat();
15868        }"
15869    ));
15870    cx.update_editor(|editor, window, cx| {
15871        editor.toggle_comments(toggle_comments, window, cx);
15872    });
15873    cx.assert_editor_state(indoc!(
15874        "fn a() {
15875             // dog();
15876         ˇ    cat();
15877        }"
15878    ));
15879}
15880
15881#[gpui::test]
15882async fn test_toggle_block_comment(cx: &mut TestAppContext) {
15883    init_test(cx, |_| {});
15884
15885    let mut cx = EditorTestContext::new(cx).await;
15886
15887    let html_language = Arc::new(
15888        Language::new(
15889            LanguageConfig {
15890                name: "HTML".into(),
15891                block_comment: Some(BlockCommentConfig {
15892                    start: "<!-- ".into(),
15893                    prefix: "".into(),
15894                    end: " -->".into(),
15895                    tab_size: 0,
15896                }),
15897                ..Default::default()
15898            },
15899            Some(tree_sitter_html::LANGUAGE.into()),
15900        )
15901        .with_injection_query(
15902            r#"
15903            (script_element
15904                (raw_text) @injection.content
15905                (#set! injection.language "javascript"))
15906            "#,
15907        )
15908        .unwrap(),
15909    );
15910
15911    let javascript_language = Arc::new(Language::new(
15912        LanguageConfig {
15913            name: "JavaScript".into(),
15914            line_comments: vec!["// ".into()],
15915            ..Default::default()
15916        },
15917        Some(tree_sitter_typescript::LANGUAGE_TSX.into()),
15918    ));
15919
15920    cx.language_registry().add(html_language.clone());
15921    cx.language_registry().add(javascript_language);
15922    cx.update_buffer(|buffer, cx| {
15923        buffer.set_language(Some(html_language), cx);
15924    });
15925
15926    // Toggle comments for empty selections
15927    cx.set_state(
15928        &r#"
15929            <p>A</p>ˇ
15930            <p>B</p>ˇ
15931            <p>C</p>ˇ
15932        "#
15933        .unindent(),
15934    );
15935    cx.update_editor(|editor, window, cx| {
15936        editor.toggle_comments(&ToggleComments::default(), window, cx)
15937    });
15938    cx.assert_editor_state(
15939        &r#"
15940            <!-- <p>A</p>ˇ -->
15941            <!-- <p>B</p>ˇ -->
15942            <!-- <p>C</p>ˇ -->
15943        "#
15944        .unindent(),
15945    );
15946    cx.update_editor(|editor, window, cx| {
15947        editor.toggle_comments(&ToggleComments::default(), window, cx)
15948    });
15949    cx.assert_editor_state(
15950        &r#"
15951            <p>A</p>ˇ
15952            <p>B</p>ˇ
15953            <p>C</p>ˇ
15954        "#
15955        .unindent(),
15956    );
15957
15958    // Toggle comments for mixture of empty and non-empty selections, where
15959    // multiple selections occupy a given line.
15960    cx.set_state(
15961        &r#"
15962            <p>A«</p>
15963            <p>ˇ»B</p>ˇ
15964            <p>C«</p>
15965            <p>ˇ»D</p>ˇ
15966        "#
15967        .unindent(),
15968    );
15969
15970    cx.update_editor(|editor, window, cx| {
15971        editor.toggle_comments(&ToggleComments::default(), window, cx)
15972    });
15973    cx.assert_editor_state(
15974        &r#"
15975            <!-- <p>A«</p>
15976            <p>ˇ»B</p>ˇ -->
15977            <!-- <p>C«</p>
15978            <p>ˇ»D</p>ˇ -->
15979        "#
15980        .unindent(),
15981    );
15982    cx.update_editor(|editor, window, cx| {
15983        editor.toggle_comments(&ToggleComments::default(), window, cx)
15984    });
15985    cx.assert_editor_state(
15986        &r#"
15987            <p>A«</p>
15988            <p>ˇ»B</p>ˇ
15989            <p>C«</p>
15990            <p>ˇ»D</p>ˇ
15991        "#
15992        .unindent(),
15993    );
15994
15995    // Toggle comments when different languages are active for different
15996    // selections.
15997    cx.set_state(
15998        &r#"
15999            ˇ<script>
16000                ˇvar x = new Y();
16001            ˇ</script>
16002        "#
16003        .unindent(),
16004    );
16005    cx.executor().run_until_parked();
16006    cx.update_editor(|editor, window, cx| {
16007        editor.toggle_comments(&ToggleComments::default(), window, cx)
16008    });
16009    // TODO this is how it actually worked in Zed Stable, which is not very ergonomic.
16010    // Uncommenting and commenting from this position brings in even more wrong artifacts.
16011    cx.assert_editor_state(
16012        &r#"
16013            <!-- ˇ<script> -->
16014                // ˇvar x = new Y();
16015            <!-- ˇ</script> -->
16016        "#
16017        .unindent(),
16018    );
16019}
16020
16021#[gpui::test]
16022fn test_editing_disjoint_excerpts(cx: &mut TestAppContext) {
16023    init_test(cx, |_| {});
16024
16025    let buffer = cx.new(|cx| Buffer::local(sample_text(3, 4, 'a'), cx));
16026    let multibuffer = cx.new(|cx| {
16027        let mut multibuffer = MultiBuffer::new(ReadWrite);
16028        multibuffer.push_excerpts(
16029            buffer.clone(),
16030            [
16031                ExcerptRange::new(Point::new(0, 0)..Point::new(0, 4)),
16032                ExcerptRange::new(Point::new(1, 0)..Point::new(1, 4)),
16033            ],
16034            cx,
16035        );
16036        assert_eq!(multibuffer.read(cx).text(), "aaaa\nbbbb");
16037        multibuffer
16038    });
16039
16040    let (editor, cx) = cx.add_window_view(|window, cx| build_editor(multibuffer, window, cx));
16041    editor.update_in(cx, |editor, window, cx| {
16042        assert_eq!(editor.text(cx), "aaaa\nbbbb");
16043        editor.change_selections(SelectionEffects::no_scroll(), window, cx, |s| {
16044            s.select_ranges([
16045                Point::new(0, 0)..Point::new(0, 0),
16046                Point::new(1, 0)..Point::new(1, 0),
16047            ])
16048        });
16049
16050        editor.handle_input("X", window, cx);
16051        assert_eq!(editor.text(cx), "Xaaaa\nXbbbb");
16052        assert_eq!(
16053            editor.selections.ranges(&editor.display_snapshot(cx)),
16054            [
16055                Point::new(0, 1)..Point::new(0, 1),
16056                Point::new(1, 1)..Point::new(1, 1),
16057            ]
16058        );
16059
16060        // Ensure the cursor's head is respected when deleting across an excerpt boundary.
16061        editor.change_selections(SelectionEffects::no_scroll(), window, cx, |s| {
16062            s.select_ranges([Point::new(0, 2)..Point::new(1, 2)])
16063        });
16064        editor.backspace(&Default::default(), window, cx);
16065        assert_eq!(editor.text(cx), "Xa\nbbb");
16066        assert_eq!(
16067            editor.selections.ranges(&editor.display_snapshot(cx)),
16068            [Point::new(1, 0)..Point::new(1, 0)]
16069        );
16070
16071        editor.change_selections(SelectionEffects::no_scroll(), window, cx, |s| {
16072            s.select_ranges([Point::new(1, 1)..Point::new(0, 1)])
16073        });
16074        editor.backspace(&Default::default(), window, cx);
16075        assert_eq!(editor.text(cx), "X\nbb");
16076        assert_eq!(
16077            editor.selections.ranges(&editor.display_snapshot(cx)),
16078            [Point::new(0, 1)..Point::new(0, 1)]
16079        );
16080    });
16081}
16082
16083#[gpui::test]
16084fn test_editing_overlapping_excerpts(cx: &mut TestAppContext) {
16085    init_test(cx, |_| {});
16086
16087    let markers = vec![('[', ']').into(), ('(', ')').into()];
16088    let (initial_text, mut excerpt_ranges) = marked_text_ranges_by(
16089        indoc! {"
16090            [aaaa
16091            (bbbb]
16092            cccc)",
16093        },
16094        markers.clone(),
16095    );
16096    let excerpt_ranges = markers.into_iter().map(|marker| {
16097        let context = excerpt_ranges.remove(&marker).unwrap()[0].clone();
16098        ExcerptRange::new(context)
16099    });
16100    let buffer = cx.new(|cx| Buffer::local(initial_text, cx));
16101    let multibuffer = cx.new(|cx| {
16102        let mut multibuffer = MultiBuffer::new(ReadWrite);
16103        multibuffer.push_excerpts(buffer, excerpt_ranges, cx);
16104        multibuffer
16105    });
16106
16107    let (editor, cx) = cx.add_window_view(|window, cx| build_editor(multibuffer, window, cx));
16108    editor.update_in(cx, |editor, window, cx| {
16109        let (expected_text, selection_ranges) = marked_text_ranges(
16110            indoc! {"
16111                aaaa
16112                bˇbbb
16113                bˇbbˇb
16114                cccc"
16115            },
16116            true,
16117        );
16118        assert_eq!(editor.text(cx), expected_text);
16119        editor.change_selections(SelectionEffects::no_scroll(), window, cx, |s| {
16120            s.select_ranges(selection_ranges)
16121        });
16122
16123        editor.handle_input("X", window, cx);
16124
16125        let (expected_text, expected_selections) = marked_text_ranges(
16126            indoc! {"
16127                aaaa
16128                bXˇbbXb
16129                bXˇbbXˇb
16130                cccc"
16131            },
16132            false,
16133        );
16134        assert_eq!(editor.text(cx), expected_text);
16135        assert_eq!(
16136            editor.selections.ranges(&editor.display_snapshot(cx)),
16137            expected_selections
16138        );
16139
16140        editor.newline(&Newline, window, cx);
16141        let (expected_text, expected_selections) = marked_text_ranges(
16142            indoc! {"
16143                aaaa
16144                bX
16145                ˇbbX
16146                b
16147                bX
16148                ˇbbX
16149                ˇb
16150                cccc"
16151            },
16152            false,
16153        );
16154        assert_eq!(editor.text(cx), expected_text);
16155        assert_eq!(
16156            editor.selections.ranges(&editor.display_snapshot(cx)),
16157            expected_selections
16158        );
16159    });
16160}
16161
16162#[gpui::test]
16163fn test_refresh_selections(cx: &mut TestAppContext) {
16164    init_test(cx, |_| {});
16165
16166    let buffer = cx.new(|cx| Buffer::local(sample_text(3, 4, 'a'), cx));
16167    let mut excerpt1_id = None;
16168    let multibuffer = cx.new(|cx| {
16169        let mut multibuffer = MultiBuffer::new(ReadWrite);
16170        excerpt1_id = multibuffer
16171            .push_excerpts(
16172                buffer.clone(),
16173                [
16174                    ExcerptRange::new(Point::new(0, 0)..Point::new(1, 4)),
16175                    ExcerptRange::new(Point::new(1, 0)..Point::new(2, 4)),
16176                ],
16177                cx,
16178            )
16179            .into_iter()
16180            .next();
16181        assert_eq!(multibuffer.read(cx).text(), "aaaa\nbbbb\nbbbb\ncccc");
16182        multibuffer
16183    });
16184
16185    let editor = cx.add_window(|window, cx| {
16186        let mut editor = build_editor(multibuffer.clone(), window, cx);
16187        let snapshot = editor.snapshot(window, cx);
16188        editor.change_selections(SelectionEffects::no_scroll(), window, cx, |s| {
16189            s.select_ranges([Point::new(1, 3)..Point::new(1, 3)])
16190        });
16191        editor.begin_selection(
16192            Point::new(2, 1).to_display_point(&snapshot),
16193            true,
16194            1,
16195            window,
16196            cx,
16197        );
16198        assert_eq!(
16199            editor.selections.ranges(&editor.display_snapshot(cx)),
16200            [
16201                Point::new(1, 3)..Point::new(1, 3),
16202                Point::new(2, 1)..Point::new(2, 1),
16203            ]
16204        );
16205        editor
16206    });
16207
16208    // Refreshing selections is a no-op when excerpts haven't changed.
16209    _ = editor.update(cx, |editor, window, cx| {
16210        editor.change_selections(SelectionEffects::no_scroll(), window, cx, |s| s.refresh());
16211        assert_eq!(
16212            editor.selections.ranges(&editor.display_snapshot(cx)),
16213            [
16214                Point::new(1, 3)..Point::new(1, 3),
16215                Point::new(2, 1)..Point::new(2, 1),
16216            ]
16217        );
16218    });
16219
16220    multibuffer.update(cx, |multibuffer, cx| {
16221        multibuffer.remove_excerpts([excerpt1_id.unwrap()], cx);
16222    });
16223    _ = editor.update(cx, |editor, window, cx| {
16224        // Removing an excerpt causes the first selection to become degenerate.
16225        assert_eq!(
16226            editor.selections.ranges(&editor.display_snapshot(cx)),
16227            [
16228                Point::new(0, 0)..Point::new(0, 0),
16229                Point::new(0, 1)..Point::new(0, 1)
16230            ]
16231        );
16232
16233        // Refreshing selections will relocate the first selection to the original buffer
16234        // location.
16235        editor.change_selections(SelectionEffects::no_scroll(), window, cx, |s| s.refresh());
16236        assert_eq!(
16237            editor.selections.ranges(&editor.display_snapshot(cx)),
16238            [
16239                Point::new(0, 1)..Point::new(0, 1),
16240                Point::new(0, 3)..Point::new(0, 3)
16241            ]
16242        );
16243        assert!(editor.selections.pending_anchor().is_some());
16244    });
16245}
16246
16247#[gpui::test]
16248fn test_refresh_selections_while_selecting_with_mouse(cx: &mut TestAppContext) {
16249    init_test(cx, |_| {});
16250
16251    let buffer = cx.new(|cx| Buffer::local(sample_text(3, 4, 'a'), cx));
16252    let mut excerpt1_id = None;
16253    let multibuffer = cx.new(|cx| {
16254        let mut multibuffer = MultiBuffer::new(ReadWrite);
16255        excerpt1_id = multibuffer
16256            .push_excerpts(
16257                buffer.clone(),
16258                [
16259                    ExcerptRange::new(Point::new(0, 0)..Point::new(1, 4)),
16260                    ExcerptRange::new(Point::new(1, 0)..Point::new(2, 4)),
16261                ],
16262                cx,
16263            )
16264            .into_iter()
16265            .next();
16266        assert_eq!(multibuffer.read(cx).text(), "aaaa\nbbbb\nbbbb\ncccc");
16267        multibuffer
16268    });
16269
16270    let editor = cx.add_window(|window, cx| {
16271        let mut editor = build_editor(multibuffer.clone(), window, cx);
16272        let snapshot = editor.snapshot(window, cx);
16273        editor.begin_selection(
16274            Point::new(1, 3).to_display_point(&snapshot),
16275            false,
16276            1,
16277            window,
16278            cx,
16279        );
16280        assert_eq!(
16281            editor.selections.ranges(&editor.display_snapshot(cx)),
16282            [Point::new(1, 3)..Point::new(1, 3)]
16283        );
16284        editor
16285    });
16286
16287    multibuffer.update(cx, |multibuffer, cx| {
16288        multibuffer.remove_excerpts([excerpt1_id.unwrap()], cx);
16289    });
16290    _ = editor.update(cx, |editor, window, cx| {
16291        assert_eq!(
16292            editor.selections.ranges(&editor.display_snapshot(cx)),
16293            [Point::new(0, 0)..Point::new(0, 0)]
16294        );
16295
16296        // Ensure we don't panic when selections are refreshed and that the pending selection is finalized.
16297        editor.change_selections(SelectionEffects::no_scroll(), window, cx, |s| s.refresh());
16298        assert_eq!(
16299            editor.selections.ranges(&editor.display_snapshot(cx)),
16300            [Point::new(0, 3)..Point::new(0, 3)]
16301        );
16302        assert!(editor.selections.pending_anchor().is_some());
16303    });
16304}
16305
16306#[gpui::test]
16307async fn test_extra_newline_insertion(cx: &mut TestAppContext) {
16308    init_test(cx, |_| {});
16309
16310    let language = Arc::new(
16311        Language::new(
16312            LanguageConfig {
16313                brackets: BracketPairConfig {
16314                    pairs: vec![
16315                        BracketPair {
16316                            start: "{".to_string(),
16317                            end: "}".to_string(),
16318                            close: true,
16319                            surround: true,
16320                            newline: true,
16321                        },
16322                        BracketPair {
16323                            start: "/* ".to_string(),
16324                            end: " */".to_string(),
16325                            close: true,
16326                            surround: true,
16327                            newline: true,
16328                        },
16329                    ],
16330                    ..Default::default()
16331                },
16332                ..Default::default()
16333            },
16334            Some(tree_sitter_rust::LANGUAGE.into()),
16335        )
16336        .with_indents_query("")
16337        .unwrap(),
16338    );
16339
16340    let text = concat!(
16341        "{   }\n",     //
16342        "  x\n",       //
16343        "  /*   */\n", //
16344        "x\n",         //
16345        "{{} }\n",     //
16346    );
16347
16348    let buffer = cx.new(|cx| Buffer::local(text, cx).with_language(language, cx));
16349    let buffer = cx.new(|cx| MultiBuffer::singleton(buffer, cx));
16350    let (editor, cx) = cx.add_window_view(|window, cx| build_editor(buffer, window, cx));
16351    editor
16352        .condition::<crate::EditorEvent>(cx, |editor, cx| !editor.buffer.read(cx).is_parsing(cx))
16353        .await;
16354
16355    editor.update_in(cx, |editor, window, cx| {
16356        editor.change_selections(SelectionEffects::no_scroll(), window, cx, |s| {
16357            s.select_display_ranges([
16358                DisplayPoint::new(DisplayRow(0), 2)..DisplayPoint::new(DisplayRow(0), 3),
16359                DisplayPoint::new(DisplayRow(2), 5)..DisplayPoint::new(DisplayRow(2), 5),
16360                DisplayPoint::new(DisplayRow(4), 4)..DisplayPoint::new(DisplayRow(4), 4),
16361            ])
16362        });
16363        editor.newline(&Newline, window, cx);
16364
16365        assert_eq!(
16366            editor.buffer().read(cx).read(cx).text(),
16367            concat!(
16368                "{ \n",    // Suppress rustfmt
16369                "\n",      //
16370                "}\n",     //
16371                "  x\n",   //
16372                "  /* \n", //
16373                "  \n",    //
16374                "  */\n",  //
16375                "x\n",     //
16376                "{{} \n",  //
16377                "}\n",     //
16378            )
16379        );
16380    });
16381}
16382
16383#[gpui::test]
16384fn test_highlighted_ranges(cx: &mut TestAppContext) {
16385    init_test(cx, |_| {});
16386
16387    let editor = cx.add_window(|window, cx| {
16388        let buffer = MultiBuffer::build_simple(&sample_text(16, 8, 'a'), cx);
16389        build_editor(buffer, window, cx)
16390    });
16391
16392    _ = editor.update(cx, |editor, window, cx| {
16393        struct Type1;
16394        struct Type2;
16395
16396        let buffer = editor.buffer.read(cx).snapshot(cx);
16397
16398        let anchor_range =
16399            |range: Range<Point>| buffer.anchor_after(range.start)..buffer.anchor_after(range.end);
16400
16401        editor.highlight_background::<Type1>(
16402            &[
16403                anchor_range(Point::new(2, 1)..Point::new(2, 3)),
16404                anchor_range(Point::new(4, 2)..Point::new(4, 4)),
16405                anchor_range(Point::new(6, 3)..Point::new(6, 5)),
16406                anchor_range(Point::new(8, 4)..Point::new(8, 6)),
16407            ],
16408            |_| Hsla::red(),
16409            cx,
16410        );
16411        editor.highlight_background::<Type2>(
16412            &[
16413                anchor_range(Point::new(3, 2)..Point::new(3, 5)),
16414                anchor_range(Point::new(5, 3)..Point::new(5, 6)),
16415                anchor_range(Point::new(7, 4)..Point::new(7, 7)),
16416                anchor_range(Point::new(9, 5)..Point::new(9, 8)),
16417            ],
16418            |_| Hsla::green(),
16419            cx,
16420        );
16421
16422        let snapshot = editor.snapshot(window, cx);
16423        let highlighted_ranges = editor.sorted_background_highlights_in_range(
16424            anchor_range(Point::new(3, 4)..Point::new(7, 4)),
16425            &snapshot,
16426            cx.theme(),
16427        );
16428        assert_eq!(
16429            highlighted_ranges,
16430            &[
16431                (
16432                    DisplayPoint::new(DisplayRow(3), 2)..DisplayPoint::new(DisplayRow(3), 5),
16433                    Hsla::green(),
16434                ),
16435                (
16436                    DisplayPoint::new(DisplayRow(4), 2)..DisplayPoint::new(DisplayRow(4), 4),
16437                    Hsla::red(),
16438                ),
16439                (
16440                    DisplayPoint::new(DisplayRow(5), 3)..DisplayPoint::new(DisplayRow(5), 6),
16441                    Hsla::green(),
16442                ),
16443                (
16444                    DisplayPoint::new(DisplayRow(6), 3)..DisplayPoint::new(DisplayRow(6), 5),
16445                    Hsla::red(),
16446                ),
16447            ]
16448        );
16449        assert_eq!(
16450            editor.sorted_background_highlights_in_range(
16451                anchor_range(Point::new(5, 6)..Point::new(6, 4)),
16452                &snapshot,
16453                cx.theme(),
16454            ),
16455            &[(
16456                DisplayPoint::new(DisplayRow(6), 3)..DisplayPoint::new(DisplayRow(6), 5),
16457                Hsla::red(),
16458            )]
16459        );
16460    });
16461}
16462
16463#[gpui::test]
16464async fn test_following(cx: &mut TestAppContext) {
16465    init_test(cx, |_| {});
16466
16467    let fs = FakeFs::new(cx.executor());
16468    let project = Project::test(fs, ["/file.rs".as_ref()], cx).await;
16469
16470    let buffer = project.update(cx, |project, cx| {
16471        let buffer = project.create_local_buffer(&sample_text(16, 8, 'a'), None, false, cx);
16472        cx.new(|cx| MultiBuffer::singleton(buffer, cx))
16473    });
16474    let leader = cx.add_window(|window, cx| build_editor(buffer.clone(), window, cx));
16475    let follower = cx.update(|cx| {
16476        cx.open_window(
16477            WindowOptions {
16478                window_bounds: Some(WindowBounds::Windowed(Bounds::from_corners(
16479                    gpui::Point::new(px(0.), px(0.)),
16480                    gpui::Point::new(px(10.), px(80.)),
16481                ))),
16482                ..Default::default()
16483            },
16484            |window, cx| cx.new(|cx| build_editor(buffer.clone(), window, cx)),
16485        )
16486        .unwrap()
16487    });
16488
16489    let is_still_following = Rc::new(RefCell::new(true));
16490    let follower_edit_event_count = Rc::new(RefCell::new(0));
16491    let pending_update = Rc::new(RefCell::new(None));
16492    let leader_entity = leader.root(cx).unwrap();
16493    let follower_entity = follower.root(cx).unwrap();
16494    _ = follower.update(cx, {
16495        let update = pending_update.clone();
16496        let is_still_following = is_still_following.clone();
16497        let follower_edit_event_count = follower_edit_event_count.clone();
16498        |_, window, cx| {
16499            cx.subscribe_in(
16500                &leader_entity,
16501                window,
16502                move |_, leader, event, window, cx| {
16503                    leader.read(cx).add_event_to_update_proto(
16504                        event,
16505                        &mut update.borrow_mut(),
16506                        window,
16507                        cx,
16508                    );
16509                },
16510            )
16511            .detach();
16512
16513            cx.subscribe_in(
16514                &follower_entity,
16515                window,
16516                move |_, _, event: &EditorEvent, _window, _cx| {
16517                    if matches!(Editor::to_follow_event(event), Some(FollowEvent::Unfollow)) {
16518                        *is_still_following.borrow_mut() = false;
16519                    }
16520
16521                    if let EditorEvent::BufferEdited = event {
16522                        *follower_edit_event_count.borrow_mut() += 1;
16523                    }
16524                },
16525            )
16526            .detach();
16527        }
16528    });
16529
16530    // Update the selections only
16531    _ = leader.update(cx, |leader, window, cx| {
16532        leader.change_selections(SelectionEffects::no_scroll(), window, cx, |s| {
16533            s.select_ranges([1..1])
16534        });
16535    });
16536    follower
16537        .update(cx, |follower, window, cx| {
16538            follower.apply_update_proto(
16539                &project,
16540                pending_update.borrow_mut().take().unwrap(),
16541                window,
16542                cx,
16543            )
16544        })
16545        .unwrap()
16546        .await
16547        .unwrap();
16548    _ = follower.update(cx, |follower, _, cx| {
16549        assert_eq!(
16550            follower.selections.ranges(&follower.display_snapshot(cx)),
16551            vec![1..1]
16552        );
16553    });
16554    assert!(*is_still_following.borrow());
16555    assert_eq!(*follower_edit_event_count.borrow(), 0);
16556
16557    // Update the scroll position only
16558    _ = leader.update(cx, |leader, window, cx| {
16559        leader.set_scroll_position(gpui::Point::new(1.5, 3.5), window, cx);
16560    });
16561    follower
16562        .update(cx, |follower, window, cx| {
16563            follower.apply_update_proto(
16564                &project,
16565                pending_update.borrow_mut().take().unwrap(),
16566                window,
16567                cx,
16568            )
16569        })
16570        .unwrap()
16571        .await
16572        .unwrap();
16573    assert_eq!(
16574        follower
16575            .update(cx, |follower, _, cx| follower.scroll_position(cx))
16576            .unwrap(),
16577        gpui::Point::new(1.5, 3.5)
16578    );
16579    assert!(*is_still_following.borrow());
16580    assert_eq!(*follower_edit_event_count.borrow(), 0);
16581
16582    // Update the selections and scroll position. The follower's scroll position is updated
16583    // via autoscroll, not via the leader's exact scroll position.
16584    _ = leader.update(cx, |leader, window, cx| {
16585        leader.change_selections(SelectionEffects::no_scroll(), window, cx, |s| {
16586            s.select_ranges([0..0])
16587        });
16588        leader.request_autoscroll(Autoscroll::newest(), cx);
16589        leader.set_scroll_position(gpui::Point::new(1.5, 3.5), window, cx);
16590    });
16591    follower
16592        .update(cx, |follower, window, cx| {
16593            follower.apply_update_proto(
16594                &project,
16595                pending_update.borrow_mut().take().unwrap(),
16596                window,
16597                cx,
16598            )
16599        })
16600        .unwrap()
16601        .await
16602        .unwrap();
16603    _ = follower.update(cx, |follower, _, cx| {
16604        assert_eq!(follower.scroll_position(cx), gpui::Point::new(1.5, 0.0));
16605        assert_eq!(
16606            follower.selections.ranges(&follower.display_snapshot(cx)),
16607            vec![0..0]
16608        );
16609    });
16610    assert!(*is_still_following.borrow());
16611
16612    // Creating a pending selection that precedes another selection
16613    _ = leader.update(cx, |leader, window, cx| {
16614        leader.change_selections(SelectionEffects::no_scroll(), window, cx, |s| {
16615            s.select_ranges([1..1])
16616        });
16617        leader.begin_selection(DisplayPoint::new(DisplayRow(0), 0), true, 1, window, cx);
16618    });
16619    follower
16620        .update(cx, |follower, window, cx| {
16621            follower.apply_update_proto(
16622                &project,
16623                pending_update.borrow_mut().take().unwrap(),
16624                window,
16625                cx,
16626            )
16627        })
16628        .unwrap()
16629        .await
16630        .unwrap();
16631    _ = follower.update(cx, |follower, _, cx| {
16632        assert_eq!(
16633            follower.selections.ranges(&follower.display_snapshot(cx)),
16634            vec![0..0, 1..1]
16635        );
16636    });
16637    assert!(*is_still_following.borrow());
16638
16639    // Extend the pending selection so that it surrounds another selection
16640    _ = leader.update(cx, |leader, window, cx| {
16641        leader.extend_selection(DisplayPoint::new(DisplayRow(0), 2), 1, window, cx);
16642    });
16643    follower
16644        .update(cx, |follower, window, cx| {
16645            follower.apply_update_proto(
16646                &project,
16647                pending_update.borrow_mut().take().unwrap(),
16648                window,
16649                cx,
16650            )
16651        })
16652        .unwrap()
16653        .await
16654        .unwrap();
16655    _ = follower.update(cx, |follower, _, cx| {
16656        assert_eq!(
16657            follower.selections.ranges(&follower.display_snapshot(cx)),
16658            vec![0..2]
16659        );
16660    });
16661
16662    // Scrolling locally breaks the follow
16663    _ = follower.update(cx, |follower, window, cx| {
16664        let top_anchor = follower.buffer().read(cx).read(cx).anchor_after(0);
16665        follower.set_scroll_anchor(
16666            ScrollAnchor {
16667                anchor: top_anchor,
16668                offset: gpui::Point::new(0.0, 0.5),
16669            },
16670            window,
16671            cx,
16672        );
16673    });
16674    assert!(!(*is_still_following.borrow()));
16675}
16676
16677#[gpui::test]
16678async fn test_following_with_multiple_excerpts(cx: &mut TestAppContext) {
16679    init_test(cx, |_| {});
16680
16681    let fs = FakeFs::new(cx.executor());
16682    let project = Project::test(fs, ["/file.rs".as_ref()], cx).await;
16683    let workspace = cx.add_window(|window, cx| Workspace::test_new(project.clone(), window, cx));
16684    let pane = workspace
16685        .update(cx, |workspace, _, _| workspace.active_pane().clone())
16686        .unwrap();
16687
16688    let cx = &mut VisualTestContext::from_window(*workspace.deref(), cx);
16689
16690    let leader = pane.update_in(cx, |_, window, cx| {
16691        let multibuffer = cx.new(|_| MultiBuffer::new(ReadWrite));
16692        cx.new(|cx| build_editor(multibuffer.clone(), window, cx))
16693    });
16694
16695    // Start following the editor when it has no excerpts.
16696    let mut state_message =
16697        leader.update_in(cx, |leader, window, cx| leader.to_state_proto(window, cx));
16698    let workspace_entity = workspace.root(cx).unwrap();
16699    let follower_1 = cx
16700        .update_window(*workspace.deref(), |_, window, cx| {
16701            Editor::from_state_proto(
16702                workspace_entity,
16703                ViewId {
16704                    creator: CollaboratorId::PeerId(PeerId::default()),
16705                    id: 0,
16706                },
16707                &mut state_message,
16708                window,
16709                cx,
16710            )
16711        })
16712        .unwrap()
16713        .unwrap()
16714        .await
16715        .unwrap();
16716
16717    let update_message = Rc::new(RefCell::new(None));
16718    follower_1.update_in(cx, {
16719        let update = update_message.clone();
16720        |_, window, cx| {
16721            cx.subscribe_in(&leader, window, move |_, leader, event, window, cx| {
16722                leader.read(cx).add_event_to_update_proto(
16723                    event,
16724                    &mut update.borrow_mut(),
16725                    window,
16726                    cx,
16727                );
16728            })
16729            .detach();
16730        }
16731    });
16732
16733    let (buffer_1, buffer_2) = project.update(cx, |project, cx| {
16734        (
16735            project.create_local_buffer("abc\ndef\nghi\njkl\n", None, false, cx),
16736            project.create_local_buffer("mno\npqr\nstu\nvwx\n", None, false, cx),
16737        )
16738    });
16739
16740    // Insert some excerpts.
16741    leader.update(cx, |leader, cx| {
16742        leader.buffer.update(cx, |multibuffer, cx| {
16743            multibuffer.set_excerpts_for_path(
16744                PathKey::with_sort_prefix(1, rel_path("b.txt").into_arc()),
16745                buffer_1.clone(),
16746                vec![
16747                    Point::row_range(0..3),
16748                    Point::row_range(1..6),
16749                    Point::row_range(12..15),
16750                ],
16751                0,
16752                cx,
16753            );
16754            multibuffer.set_excerpts_for_path(
16755                PathKey::with_sort_prefix(1, rel_path("a.txt").into_arc()),
16756                buffer_2.clone(),
16757                vec![Point::row_range(0..6), Point::row_range(8..12)],
16758                0,
16759                cx,
16760            );
16761        });
16762    });
16763
16764    // Apply the update of adding the excerpts.
16765    follower_1
16766        .update_in(cx, |follower, window, cx| {
16767            follower.apply_update_proto(
16768                &project,
16769                update_message.borrow().clone().unwrap(),
16770                window,
16771                cx,
16772            )
16773        })
16774        .await
16775        .unwrap();
16776    assert_eq!(
16777        follower_1.update(cx, |editor, cx| editor.text(cx)),
16778        leader.update(cx, |editor, cx| editor.text(cx))
16779    );
16780    update_message.borrow_mut().take();
16781
16782    // Start following separately after it already has excerpts.
16783    let mut state_message =
16784        leader.update_in(cx, |leader, window, cx| leader.to_state_proto(window, cx));
16785    let workspace_entity = workspace.root(cx).unwrap();
16786    let follower_2 = cx
16787        .update_window(*workspace.deref(), |_, window, cx| {
16788            Editor::from_state_proto(
16789                workspace_entity,
16790                ViewId {
16791                    creator: CollaboratorId::PeerId(PeerId::default()),
16792                    id: 0,
16793                },
16794                &mut state_message,
16795                window,
16796                cx,
16797            )
16798        })
16799        .unwrap()
16800        .unwrap()
16801        .await
16802        .unwrap();
16803    assert_eq!(
16804        follower_2.update(cx, |editor, cx| editor.text(cx)),
16805        leader.update(cx, |editor, cx| editor.text(cx))
16806    );
16807
16808    // Remove some excerpts.
16809    leader.update(cx, |leader, cx| {
16810        leader.buffer.update(cx, |multibuffer, cx| {
16811            let excerpt_ids = multibuffer.excerpt_ids();
16812            multibuffer.remove_excerpts([excerpt_ids[1], excerpt_ids[2]], cx);
16813            multibuffer.remove_excerpts([excerpt_ids[0]], cx);
16814        });
16815    });
16816
16817    // Apply the update of removing the excerpts.
16818    follower_1
16819        .update_in(cx, |follower, window, cx| {
16820            follower.apply_update_proto(
16821                &project,
16822                update_message.borrow().clone().unwrap(),
16823                window,
16824                cx,
16825            )
16826        })
16827        .await
16828        .unwrap();
16829    follower_2
16830        .update_in(cx, |follower, window, cx| {
16831            follower.apply_update_proto(
16832                &project,
16833                update_message.borrow().clone().unwrap(),
16834                window,
16835                cx,
16836            )
16837        })
16838        .await
16839        .unwrap();
16840    update_message.borrow_mut().take();
16841    assert_eq!(
16842        follower_1.update(cx, |editor, cx| editor.text(cx)),
16843        leader.update(cx, |editor, cx| editor.text(cx))
16844    );
16845}
16846
16847#[gpui::test]
16848async fn go_to_prev_overlapping_diagnostic(executor: BackgroundExecutor, cx: &mut TestAppContext) {
16849    init_test(cx, |_| {});
16850
16851    let mut cx = EditorTestContext::new(cx).await;
16852    let lsp_store =
16853        cx.update_editor(|editor, _, cx| editor.project().unwrap().read(cx).lsp_store());
16854
16855    cx.set_state(indoc! {"
16856        ˇfn func(abc def: i32) -> u32 {
16857        }
16858    "});
16859
16860    cx.update(|_, cx| {
16861        lsp_store.update(cx, |lsp_store, cx| {
16862            lsp_store
16863                .update_diagnostics(
16864                    LanguageServerId(0),
16865                    lsp::PublishDiagnosticsParams {
16866                        uri: lsp::Uri::from_file_path(path!("/root/file")).unwrap(),
16867                        version: None,
16868                        diagnostics: vec![
16869                            lsp::Diagnostic {
16870                                range: lsp::Range::new(
16871                                    lsp::Position::new(0, 11),
16872                                    lsp::Position::new(0, 12),
16873                                ),
16874                                severity: Some(lsp::DiagnosticSeverity::ERROR),
16875                                ..Default::default()
16876                            },
16877                            lsp::Diagnostic {
16878                                range: lsp::Range::new(
16879                                    lsp::Position::new(0, 12),
16880                                    lsp::Position::new(0, 15),
16881                                ),
16882                                severity: Some(lsp::DiagnosticSeverity::ERROR),
16883                                ..Default::default()
16884                            },
16885                            lsp::Diagnostic {
16886                                range: lsp::Range::new(
16887                                    lsp::Position::new(0, 25),
16888                                    lsp::Position::new(0, 28),
16889                                ),
16890                                severity: Some(lsp::DiagnosticSeverity::ERROR),
16891                                ..Default::default()
16892                            },
16893                        ],
16894                    },
16895                    None,
16896                    DiagnosticSourceKind::Pushed,
16897                    &[],
16898                    cx,
16899                )
16900                .unwrap()
16901        });
16902    });
16903
16904    executor.run_until_parked();
16905
16906    cx.update_editor(|editor, window, cx| {
16907        editor.go_to_prev_diagnostic(&GoToPreviousDiagnostic::default(), window, cx);
16908    });
16909
16910    cx.assert_editor_state(indoc! {"
16911        fn func(abc def: i32) -> ˇu32 {
16912        }
16913    "});
16914
16915    cx.update_editor(|editor, window, cx| {
16916        editor.go_to_prev_diagnostic(&GoToPreviousDiagnostic::default(), window, cx);
16917    });
16918
16919    cx.assert_editor_state(indoc! {"
16920        fn func(abc ˇdef: i32) -> u32 {
16921        }
16922    "});
16923
16924    cx.update_editor(|editor, window, cx| {
16925        editor.go_to_prev_diagnostic(&GoToPreviousDiagnostic::default(), window, cx);
16926    });
16927
16928    cx.assert_editor_state(indoc! {"
16929        fn func(abcˇ def: i32) -> u32 {
16930        }
16931    "});
16932
16933    cx.update_editor(|editor, window, cx| {
16934        editor.go_to_prev_diagnostic(&GoToPreviousDiagnostic::default(), window, cx);
16935    });
16936
16937    cx.assert_editor_state(indoc! {"
16938        fn func(abc def: i32) -> ˇu32 {
16939        }
16940    "});
16941}
16942
16943#[gpui::test]
16944async fn test_go_to_hunk(executor: BackgroundExecutor, cx: &mut TestAppContext) {
16945    init_test(cx, |_| {});
16946
16947    let mut cx = EditorTestContext::new(cx).await;
16948
16949    let diff_base = r#"
16950        use some::mod;
16951
16952        const A: u32 = 42;
16953
16954        fn main() {
16955            println!("hello");
16956
16957            println!("world");
16958        }
16959        "#
16960    .unindent();
16961
16962    // Edits are modified, removed, modified, added
16963    cx.set_state(
16964        &r#"
16965        use some::modified;
16966
16967        ˇ
16968        fn main() {
16969            println!("hello there");
16970
16971            println!("around the");
16972            println!("world");
16973        }
16974        "#
16975        .unindent(),
16976    );
16977
16978    cx.set_head_text(&diff_base);
16979    executor.run_until_parked();
16980
16981    cx.update_editor(|editor, window, cx| {
16982        //Wrap around the bottom of the buffer
16983        for _ in 0..3 {
16984            editor.go_to_next_hunk(&GoToHunk, window, cx);
16985        }
16986    });
16987
16988    cx.assert_editor_state(
16989        &r#"
16990        ˇuse some::modified;
16991
16992
16993        fn main() {
16994            println!("hello there");
16995
16996            println!("around the");
16997            println!("world");
16998        }
16999        "#
17000        .unindent(),
17001    );
17002
17003    cx.update_editor(|editor, window, cx| {
17004        //Wrap around the top of the buffer
17005        for _ in 0..2 {
17006            editor.go_to_prev_hunk(&GoToPreviousHunk, window, cx);
17007        }
17008    });
17009
17010    cx.assert_editor_state(
17011        &r#"
17012        use some::modified;
17013
17014
17015        fn main() {
17016        ˇ    println!("hello there");
17017
17018            println!("around the");
17019            println!("world");
17020        }
17021        "#
17022        .unindent(),
17023    );
17024
17025    cx.update_editor(|editor, window, cx| {
17026        editor.go_to_prev_hunk(&GoToPreviousHunk, window, cx);
17027    });
17028
17029    cx.assert_editor_state(
17030        &r#"
17031        use some::modified;
17032
17033        ˇ
17034        fn main() {
17035            println!("hello there");
17036
17037            println!("around the");
17038            println!("world");
17039        }
17040        "#
17041        .unindent(),
17042    );
17043
17044    cx.update_editor(|editor, window, cx| {
17045        editor.go_to_prev_hunk(&GoToPreviousHunk, window, cx);
17046    });
17047
17048    cx.assert_editor_state(
17049        &r#"
17050        ˇuse some::modified;
17051
17052
17053        fn main() {
17054            println!("hello there");
17055
17056            println!("around the");
17057            println!("world");
17058        }
17059        "#
17060        .unindent(),
17061    );
17062
17063    cx.update_editor(|editor, window, cx| {
17064        for _ in 0..2 {
17065            editor.go_to_prev_hunk(&GoToPreviousHunk, window, cx);
17066        }
17067    });
17068
17069    cx.assert_editor_state(
17070        &r#"
17071        use some::modified;
17072
17073
17074        fn main() {
17075        ˇ    println!("hello there");
17076
17077            println!("around the");
17078            println!("world");
17079        }
17080        "#
17081        .unindent(),
17082    );
17083
17084    cx.update_editor(|editor, window, cx| {
17085        editor.fold(&Fold, window, cx);
17086    });
17087
17088    cx.update_editor(|editor, window, cx| {
17089        editor.go_to_next_hunk(&GoToHunk, window, cx);
17090    });
17091
17092    cx.assert_editor_state(
17093        &r#"
17094        ˇuse some::modified;
17095
17096
17097        fn main() {
17098            println!("hello there");
17099
17100            println!("around the");
17101            println!("world");
17102        }
17103        "#
17104        .unindent(),
17105    );
17106}
17107
17108#[test]
17109fn test_split_words() {
17110    fn split(text: &str) -> Vec<&str> {
17111        split_words(text).collect()
17112    }
17113
17114    assert_eq!(split("HelloWorld"), &["Hello", "World"]);
17115    assert_eq!(split("hello_world"), &["hello_", "world"]);
17116    assert_eq!(split("_hello_world_"), &["_", "hello_", "world_"]);
17117    assert_eq!(split("Hello_World"), &["Hello_", "World"]);
17118    assert_eq!(split("helloWOrld"), &["hello", "WOrld"]);
17119    assert_eq!(split("helloworld"), &["helloworld"]);
17120
17121    assert_eq!(split(":do_the_thing"), &[":", "do_", "the_", "thing"]);
17122}
17123
17124#[gpui::test]
17125async fn test_move_to_enclosing_bracket(cx: &mut TestAppContext) {
17126    init_test(cx, |_| {});
17127
17128    let mut cx = EditorLspTestContext::new_typescript(Default::default(), cx).await;
17129    let mut assert = |before, after| {
17130        let _state_context = cx.set_state(before);
17131        cx.run_until_parked();
17132        cx.update_editor(|editor, window, cx| {
17133            editor.move_to_enclosing_bracket(&MoveToEnclosingBracket, window, cx)
17134        });
17135        cx.run_until_parked();
17136        cx.assert_editor_state(after);
17137    };
17138
17139    // Outside bracket jumps to outside of matching bracket
17140    assert("console.logˇ(var);", "console.log(var)ˇ;");
17141    assert("console.log(var)ˇ;", "console.logˇ(var);");
17142
17143    // Inside bracket jumps to inside of matching bracket
17144    assert("console.log(ˇvar);", "console.log(varˇ);");
17145    assert("console.log(varˇ);", "console.log(ˇvar);");
17146
17147    // When outside a bracket and inside, favor jumping to the inside bracket
17148    assert(
17149        "console.log('foo', [1, 2, 3]ˇ);",
17150        "console.log(ˇ'foo', [1, 2, 3]);",
17151    );
17152    assert(
17153        "console.log(ˇ'foo', [1, 2, 3]);",
17154        "console.log('foo', [1, 2, 3]ˇ);",
17155    );
17156
17157    // Bias forward if two options are equally likely
17158    assert(
17159        "let result = curried_fun()ˇ();",
17160        "let result = curried_fun()()ˇ;",
17161    );
17162
17163    // If directly adjacent to a smaller pair but inside a larger (not adjacent), pick the smaller
17164    assert(
17165        indoc! {"
17166            function test() {
17167                console.log('test')ˇ
17168            }"},
17169        indoc! {"
17170            function test() {
17171                console.logˇ('test')
17172            }"},
17173    );
17174}
17175
17176#[gpui::test]
17177async fn test_on_type_formatting_not_triggered(cx: &mut TestAppContext) {
17178    init_test(cx, |_| {});
17179
17180    let fs = FakeFs::new(cx.executor());
17181    fs.insert_tree(
17182        path!("/a"),
17183        json!({
17184            "main.rs": "fn main() { let a = 5; }",
17185            "other.rs": "// Test file",
17186        }),
17187    )
17188    .await;
17189    let project = Project::test(fs, [path!("/a").as_ref()], cx).await;
17190
17191    let language_registry = project.read_with(cx, |project, _| project.languages().clone());
17192    language_registry.add(Arc::new(Language::new(
17193        LanguageConfig {
17194            name: "Rust".into(),
17195            matcher: LanguageMatcher {
17196                path_suffixes: vec!["rs".to_string()],
17197                ..Default::default()
17198            },
17199            brackets: BracketPairConfig {
17200                pairs: vec![BracketPair {
17201                    start: "{".to_string(),
17202                    end: "}".to_string(),
17203                    close: true,
17204                    surround: true,
17205                    newline: true,
17206                }],
17207                disabled_scopes_by_bracket_ix: Vec::new(),
17208            },
17209            ..Default::default()
17210        },
17211        Some(tree_sitter_rust::LANGUAGE.into()),
17212    )));
17213    let mut fake_servers = language_registry.register_fake_lsp(
17214        "Rust",
17215        FakeLspAdapter {
17216            capabilities: lsp::ServerCapabilities {
17217                document_on_type_formatting_provider: Some(lsp::DocumentOnTypeFormattingOptions {
17218                    first_trigger_character: "{".to_string(),
17219                    more_trigger_character: None,
17220                }),
17221                ..Default::default()
17222            },
17223            ..Default::default()
17224        },
17225    );
17226
17227    let workspace = cx.add_window(|window, cx| Workspace::test_new(project.clone(), window, cx));
17228
17229    let cx = &mut VisualTestContext::from_window(*workspace, cx);
17230
17231    let worktree_id = workspace
17232        .update(cx, |workspace, _, cx| {
17233            workspace.project().update(cx, |project, cx| {
17234                project.worktrees(cx).next().unwrap().read(cx).id()
17235            })
17236        })
17237        .unwrap();
17238
17239    let buffer = project
17240        .update(cx, |project, cx| {
17241            project.open_local_buffer(path!("/a/main.rs"), cx)
17242        })
17243        .await
17244        .unwrap();
17245    let editor_handle = workspace
17246        .update(cx, |workspace, window, cx| {
17247            workspace.open_path((worktree_id, rel_path("main.rs")), None, true, window, cx)
17248        })
17249        .unwrap()
17250        .await
17251        .unwrap()
17252        .downcast::<Editor>()
17253        .unwrap();
17254
17255    cx.executor().start_waiting();
17256    let fake_server = fake_servers.next().await.unwrap();
17257
17258    fake_server.set_request_handler::<lsp::request::OnTypeFormatting, _, _>(
17259        |params, _| async move {
17260            assert_eq!(
17261                params.text_document_position.text_document.uri,
17262                lsp::Uri::from_file_path(path!("/a/main.rs")).unwrap(),
17263            );
17264            assert_eq!(
17265                params.text_document_position.position,
17266                lsp::Position::new(0, 21),
17267            );
17268
17269            Ok(Some(vec![lsp::TextEdit {
17270                new_text: "]".to_string(),
17271                range: lsp::Range::new(lsp::Position::new(0, 22), lsp::Position::new(0, 22)),
17272            }]))
17273        },
17274    );
17275
17276    editor_handle.update_in(cx, |editor, window, cx| {
17277        window.focus(&editor.focus_handle(cx));
17278        editor.change_selections(SelectionEffects::no_scroll(), window, cx, |s| {
17279            s.select_ranges([Point::new(0, 21)..Point::new(0, 20)])
17280        });
17281        editor.handle_input("{", window, cx);
17282    });
17283
17284    cx.executor().run_until_parked();
17285
17286    buffer.update(cx, |buffer, _| {
17287        assert_eq!(
17288            buffer.text(),
17289            "fn main() { let a = {5}; }",
17290            "No extra braces from on type formatting should appear in the buffer"
17291        )
17292    });
17293}
17294
17295#[gpui::test(iterations = 20, seeds(31))]
17296async fn test_on_type_formatting_is_applied_after_autoindent(cx: &mut TestAppContext) {
17297    init_test(cx, |_| {});
17298
17299    let mut cx = EditorLspTestContext::new_rust(
17300        lsp::ServerCapabilities {
17301            document_on_type_formatting_provider: Some(lsp::DocumentOnTypeFormattingOptions {
17302                first_trigger_character: ".".to_string(),
17303                more_trigger_character: None,
17304            }),
17305            ..Default::default()
17306        },
17307        cx,
17308    )
17309    .await;
17310
17311    cx.update_buffer(|buffer, _| {
17312        // This causes autoindent to be async.
17313        buffer.set_sync_parse_timeout(Duration::ZERO)
17314    });
17315
17316    cx.set_state("fn c() {\n    d()ˇ\n}\n");
17317    cx.simulate_keystroke("\n");
17318    cx.run_until_parked();
17319
17320    let buffer_cloned = cx.multibuffer(|multi_buffer, _| multi_buffer.as_singleton().unwrap());
17321    let mut request =
17322        cx.set_request_handler::<lsp::request::OnTypeFormatting, _, _>(move |_, _, mut cx| {
17323            let buffer_cloned = buffer_cloned.clone();
17324            async move {
17325                buffer_cloned.update(&mut cx, |buffer, _| {
17326                    assert_eq!(
17327                        buffer.text(),
17328                        "fn c() {\n    d()\n        .\n}\n",
17329                        "OnTypeFormatting should triggered after autoindent applied"
17330                    )
17331                })?;
17332
17333                Ok(Some(vec![]))
17334            }
17335        });
17336
17337    cx.simulate_keystroke(".");
17338    cx.run_until_parked();
17339
17340    cx.assert_editor_state("fn c() {\n    d()\n\n}\n");
17341    assert!(request.next().await.is_some());
17342    request.close();
17343    assert!(request.next().await.is_none());
17344}
17345
17346#[gpui::test]
17347async fn test_language_server_restart_due_to_settings_change(cx: &mut TestAppContext) {
17348    init_test(cx, |_| {});
17349
17350    let fs = FakeFs::new(cx.executor());
17351    fs.insert_tree(
17352        path!("/a"),
17353        json!({
17354            "main.rs": "fn main() { let a = 5; }",
17355            "other.rs": "// Test file",
17356        }),
17357    )
17358    .await;
17359
17360    let project = Project::test(fs, [path!("/a").as_ref()], cx).await;
17361
17362    let server_restarts = Arc::new(AtomicUsize::new(0));
17363    let closure_restarts = Arc::clone(&server_restarts);
17364    let language_server_name = "test language server";
17365    let language_name: LanguageName = "Rust".into();
17366
17367    let language_registry = project.read_with(cx, |project, _| project.languages().clone());
17368    language_registry.add(Arc::new(Language::new(
17369        LanguageConfig {
17370            name: language_name.clone(),
17371            matcher: LanguageMatcher {
17372                path_suffixes: vec!["rs".to_string()],
17373                ..Default::default()
17374            },
17375            ..Default::default()
17376        },
17377        Some(tree_sitter_rust::LANGUAGE.into()),
17378    )));
17379    let mut fake_servers = language_registry.register_fake_lsp(
17380        "Rust",
17381        FakeLspAdapter {
17382            name: language_server_name,
17383            initialization_options: Some(json!({
17384                "testOptionValue": true
17385            })),
17386            initializer: Some(Box::new(move |fake_server| {
17387                let task_restarts = Arc::clone(&closure_restarts);
17388                fake_server.set_request_handler::<lsp::request::Shutdown, _, _>(move |_, _| {
17389                    task_restarts.fetch_add(1, atomic::Ordering::Release);
17390                    futures::future::ready(Ok(()))
17391                });
17392            })),
17393            ..Default::default()
17394        },
17395    );
17396
17397    let _window = cx.add_window(|window, cx| Workspace::test_new(project.clone(), window, cx));
17398    let _buffer = project
17399        .update(cx, |project, cx| {
17400            project.open_local_buffer_with_lsp(path!("/a/main.rs"), cx)
17401        })
17402        .await
17403        .unwrap();
17404    let _fake_server = fake_servers.next().await.unwrap();
17405    update_test_language_settings(cx, |language_settings| {
17406        language_settings.languages.0.insert(
17407            language_name.clone().0,
17408            LanguageSettingsContent {
17409                tab_size: NonZeroU32::new(8),
17410                ..Default::default()
17411            },
17412        );
17413    });
17414    cx.executor().run_until_parked();
17415    assert_eq!(
17416        server_restarts.load(atomic::Ordering::Acquire),
17417        0,
17418        "Should not restart LSP server on an unrelated change"
17419    );
17420
17421    update_test_project_settings(cx, |project_settings| {
17422        project_settings.lsp.insert(
17423            "Some other server name".into(),
17424            LspSettings {
17425                binary: None,
17426                settings: None,
17427                initialization_options: Some(json!({
17428                    "some other init value": false
17429                })),
17430                enable_lsp_tasks: false,
17431                fetch: None,
17432            },
17433        );
17434    });
17435    cx.executor().run_until_parked();
17436    assert_eq!(
17437        server_restarts.load(atomic::Ordering::Acquire),
17438        0,
17439        "Should not restart LSP server on an unrelated LSP settings change"
17440    );
17441
17442    update_test_project_settings(cx, |project_settings| {
17443        project_settings.lsp.insert(
17444            language_server_name.into(),
17445            LspSettings {
17446                binary: None,
17447                settings: None,
17448                initialization_options: Some(json!({
17449                    "anotherInitValue": false
17450                })),
17451                enable_lsp_tasks: false,
17452                fetch: None,
17453            },
17454        );
17455    });
17456    cx.executor().run_until_parked();
17457    assert_eq!(
17458        server_restarts.load(atomic::Ordering::Acquire),
17459        1,
17460        "Should restart LSP server on a related LSP settings change"
17461    );
17462
17463    update_test_project_settings(cx, |project_settings| {
17464        project_settings.lsp.insert(
17465            language_server_name.into(),
17466            LspSettings {
17467                binary: None,
17468                settings: None,
17469                initialization_options: Some(json!({
17470                    "anotherInitValue": false
17471                })),
17472                enable_lsp_tasks: false,
17473                fetch: None,
17474            },
17475        );
17476    });
17477    cx.executor().run_until_parked();
17478    assert_eq!(
17479        server_restarts.load(atomic::Ordering::Acquire),
17480        1,
17481        "Should not restart LSP server on a related LSP settings change that is the same"
17482    );
17483
17484    update_test_project_settings(cx, |project_settings| {
17485        project_settings.lsp.insert(
17486            language_server_name.into(),
17487            LspSettings {
17488                binary: None,
17489                settings: None,
17490                initialization_options: None,
17491                enable_lsp_tasks: false,
17492                fetch: None,
17493            },
17494        );
17495    });
17496    cx.executor().run_until_parked();
17497    assert_eq!(
17498        server_restarts.load(atomic::Ordering::Acquire),
17499        2,
17500        "Should restart LSP server on another related LSP settings change"
17501    );
17502}
17503
17504#[gpui::test]
17505async fn test_completions_with_additional_edits(cx: &mut TestAppContext) {
17506    init_test(cx, |_| {});
17507
17508    let mut cx = EditorLspTestContext::new_rust(
17509        lsp::ServerCapabilities {
17510            completion_provider: Some(lsp::CompletionOptions {
17511                trigger_characters: Some(vec![".".to_string()]),
17512                resolve_provider: Some(true),
17513                ..Default::default()
17514            }),
17515            ..Default::default()
17516        },
17517        cx,
17518    )
17519    .await;
17520
17521    cx.set_state("fn main() { let a = 2ˇ; }");
17522    cx.simulate_keystroke(".");
17523    let completion_item = lsp::CompletionItem {
17524        label: "some".into(),
17525        kind: Some(lsp::CompletionItemKind::SNIPPET),
17526        detail: Some("Wrap the expression in an `Option::Some`".to_string()),
17527        documentation: Some(lsp::Documentation::MarkupContent(lsp::MarkupContent {
17528            kind: lsp::MarkupKind::Markdown,
17529            value: "```rust\nSome(2)\n```".to_string(),
17530        })),
17531        deprecated: Some(false),
17532        sort_text: Some("fffffff2".to_string()),
17533        filter_text: Some("some".to_string()),
17534        insert_text_format: Some(lsp::InsertTextFormat::SNIPPET),
17535        text_edit: Some(lsp::CompletionTextEdit::Edit(lsp::TextEdit {
17536            range: lsp::Range {
17537                start: lsp::Position {
17538                    line: 0,
17539                    character: 22,
17540                },
17541                end: lsp::Position {
17542                    line: 0,
17543                    character: 22,
17544                },
17545            },
17546            new_text: "Some(2)".to_string(),
17547        })),
17548        additional_text_edits: Some(vec![lsp::TextEdit {
17549            range: lsp::Range {
17550                start: lsp::Position {
17551                    line: 0,
17552                    character: 20,
17553                },
17554                end: lsp::Position {
17555                    line: 0,
17556                    character: 22,
17557                },
17558            },
17559            new_text: "".to_string(),
17560        }]),
17561        ..Default::default()
17562    };
17563
17564    let closure_completion_item = completion_item.clone();
17565    let mut request = cx.set_request_handler::<lsp::request::Completion, _, _>(move |_, _, _| {
17566        let task_completion_item = closure_completion_item.clone();
17567        async move {
17568            Ok(Some(lsp::CompletionResponse::Array(vec![
17569                task_completion_item,
17570            ])))
17571        }
17572    });
17573
17574    request.next().await;
17575
17576    cx.condition(|editor, _| editor.context_menu_visible())
17577        .await;
17578    let apply_additional_edits = cx.update_editor(|editor, window, cx| {
17579        editor
17580            .confirm_completion(&ConfirmCompletion::default(), window, cx)
17581            .unwrap()
17582    });
17583    cx.assert_editor_state("fn main() { let a = 2.Some(2)ˇ; }");
17584
17585    cx.set_request_handler::<lsp::request::ResolveCompletionItem, _, _>(move |_, _, _| {
17586        let task_completion_item = completion_item.clone();
17587        async move { Ok(task_completion_item) }
17588    })
17589    .next()
17590    .await
17591    .unwrap();
17592    apply_additional_edits.await.unwrap();
17593    cx.assert_editor_state("fn main() { let a = Some(2)ˇ; }");
17594}
17595
17596#[gpui::test]
17597async fn test_completions_resolve_updates_labels_if_filter_text_matches(cx: &mut TestAppContext) {
17598    init_test(cx, |_| {});
17599
17600    let mut cx = EditorLspTestContext::new_rust(
17601        lsp::ServerCapabilities {
17602            completion_provider: Some(lsp::CompletionOptions {
17603                trigger_characters: Some(vec![".".to_string()]),
17604                resolve_provider: Some(true),
17605                ..Default::default()
17606            }),
17607            ..Default::default()
17608        },
17609        cx,
17610    )
17611    .await;
17612
17613    cx.set_state("fn main() { let a = 2ˇ; }");
17614    cx.simulate_keystroke(".");
17615
17616    let item1 = lsp::CompletionItem {
17617        label: "method id()".to_string(),
17618        filter_text: Some("id".to_string()),
17619        detail: None,
17620        documentation: None,
17621        text_edit: Some(lsp::CompletionTextEdit::Edit(lsp::TextEdit {
17622            range: lsp::Range::new(lsp::Position::new(0, 22), lsp::Position::new(0, 22)),
17623            new_text: ".id".to_string(),
17624        })),
17625        ..lsp::CompletionItem::default()
17626    };
17627
17628    let item2 = lsp::CompletionItem {
17629        label: "other".to_string(),
17630        filter_text: Some("other".to_string()),
17631        detail: None,
17632        documentation: None,
17633        text_edit: Some(lsp::CompletionTextEdit::Edit(lsp::TextEdit {
17634            range: lsp::Range::new(lsp::Position::new(0, 22), lsp::Position::new(0, 22)),
17635            new_text: ".other".to_string(),
17636        })),
17637        ..lsp::CompletionItem::default()
17638    };
17639
17640    let item1 = item1.clone();
17641    cx.set_request_handler::<lsp::request::Completion, _, _>({
17642        let item1 = item1.clone();
17643        move |_, _, _| {
17644            let item1 = item1.clone();
17645            let item2 = item2.clone();
17646            async move { Ok(Some(lsp::CompletionResponse::Array(vec![item1, item2]))) }
17647        }
17648    })
17649    .next()
17650    .await;
17651
17652    cx.condition(|editor, _| editor.context_menu_visible())
17653        .await;
17654    cx.update_editor(|editor, _, _| {
17655        let context_menu = editor.context_menu.borrow_mut();
17656        let context_menu = context_menu
17657            .as_ref()
17658            .expect("Should have the context menu deployed");
17659        match context_menu {
17660            CodeContextMenu::Completions(completions_menu) => {
17661                let completions = completions_menu.completions.borrow_mut();
17662                assert_eq!(
17663                    completions
17664                        .iter()
17665                        .map(|completion| &completion.label.text)
17666                        .collect::<Vec<_>>(),
17667                    vec!["method id()", "other"]
17668                )
17669            }
17670            CodeContextMenu::CodeActions(_) => panic!("Should show the completions menu"),
17671        }
17672    });
17673
17674    cx.set_request_handler::<lsp::request::ResolveCompletionItem, _, _>({
17675        let item1 = item1.clone();
17676        move |_, item_to_resolve, _| {
17677            let item1 = item1.clone();
17678            async move {
17679                if item1 == item_to_resolve {
17680                    Ok(lsp::CompletionItem {
17681                        label: "method id()".to_string(),
17682                        filter_text: Some("id".to_string()),
17683                        detail: Some("Now resolved!".to_string()),
17684                        documentation: Some(lsp::Documentation::String("Docs".to_string())),
17685                        text_edit: Some(lsp::CompletionTextEdit::Edit(lsp::TextEdit {
17686                            range: lsp::Range::new(
17687                                lsp::Position::new(0, 22),
17688                                lsp::Position::new(0, 22),
17689                            ),
17690                            new_text: ".id".to_string(),
17691                        })),
17692                        ..lsp::CompletionItem::default()
17693                    })
17694                } else {
17695                    Ok(item_to_resolve)
17696                }
17697            }
17698        }
17699    })
17700    .next()
17701    .await
17702    .unwrap();
17703    cx.run_until_parked();
17704
17705    cx.update_editor(|editor, window, cx| {
17706        editor.context_menu_next(&Default::default(), window, cx);
17707    });
17708
17709    cx.update_editor(|editor, _, _| {
17710        let context_menu = editor.context_menu.borrow_mut();
17711        let context_menu = context_menu
17712            .as_ref()
17713            .expect("Should have the context menu deployed");
17714        match context_menu {
17715            CodeContextMenu::Completions(completions_menu) => {
17716                let completions = completions_menu.completions.borrow_mut();
17717                assert_eq!(
17718                    completions
17719                        .iter()
17720                        .map(|completion| &completion.label.text)
17721                        .collect::<Vec<_>>(),
17722                    vec!["method id() Now resolved!", "other"],
17723                    "Should update first completion label, but not second as the filter text did not match."
17724                );
17725            }
17726            CodeContextMenu::CodeActions(_) => panic!("Should show the completions menu"),
17727        }
17728    });
17729}
17730
17731#[gpui::test]
17732async fn test_context_menus_hide_hover_popover(cx: &mut gpui::TestAppContext) {
17733    init_test(cx, |_| {});
17734    let mut cx = EditorLspTestContext::new_rust(
17735        lsp::ServerCapabilities {
17736            hover_provider: Some(lsp::HoverProviderCapability::Simple(true)),
17737            code_action_provider: Some(lsp::CodeActionProviderCapability::Simple(true)),
17738            completion_provider: Some(lsp::CompletionOptions {
17739                resolve_provider: Some(true),
17740                ..Default::default()
17741            }),
17742            ..Default::default()
17743        },
17744        cx,
17745    )
17746    .await;
17747    cx.set_state(indoc! {"
17748        struct TestStruct {
17749            field: i32
17750        }
17751
17752        fn mainˇ() {
17753            let unused_var = 42;
17754            let test_struct = TestStruct { field: 42 };
17755        }
17756    "});
17757    let symbol_range = cx.lsp_range(indoc! {"
17758        struct TestStruct {
17759            field: i32
17760        }
17761
17762        «fn main»() {
17763            let unused_var = 42;
17764            let test_struct = TestStruct { field: 42 };
17765        }
17766    "});
17767    let mut hover_requests =
17768        cx.set_request_handler::<lsp::request::HoverRequest, _, _>(move |_, _, _| async move {
17769            Ok(Some(lsp::Hover {
17770                contents: lsp::HoverContents::Markup(lsp::MarkupContent {
17771                    kind: lsp::MarkupKind::Markdown,
17772                    value: "Function documentation".to_string(),
17773                }),
17774                range: Some(symbol_range),
17775            }))
17776        });
17777
17778    // Case 1: Test that code action menu hide hover popover
17779    cx.dispatch_action(Hover);
17780    hover_requests.next().await;
17781    cx.condition(|editor, _| editor.hover_state.visible()).await;
17782    let mut code_action_requests = cx.set_request_handler::<lsp::request::CodeActionRequest, _, _>(
17783        move |_, _, _| async move {
17784            Ok(Some(vec![lsp::CodeActionOrCommand::CodeAction(
17785                lsp::CodeAction {
17786                    title: "Remove unused variable".to_string(),
17787                    kind: Some(CodeActionKind::QUICKFIX),
17788                    edit: Some(lsp::WorkspaceEdit {
17789                        changes: Some(
17790                            [(
17791                                lsp::Uri::from_file_path(path!("/file.rs")).unwrap(),
17792                                vec![lsp::TextEdit {
17793                                    range: lsp::Range::new(
17794                                        lsp::Position::new(5, 4),
17795                                        lsp::Position::new(5, 27),
17796                                    ),
17797                                    new_text: "".to_string(),
17798                                }],
17799                            )]
17800                            .into_iter()
17801                            .collect(),
17802                        ),
17803                        ..Default::default()
17804                    }),
17805                    ..Default::default()
17806                },
17807            )]))
17808        },
17809    );
17810    cx.update_editor(|editor, window, cx| {
17811        editor.toggle_code_actions(
17812            &ToggleCodeActions {
17813                deployed_from: None,
17814                quick_launch: false,
17815            },
17816            window,
17817            cx,
17818        );
17819    });
17820    code_action_requests.next().await;
17821    cx.run_until_parked();
17822    cx.condition(|editor, _| editor.context_menu_visible())
17823        .await;
17824    cx.update_editor(|editor, _, _| {
17825        assert!(
17826            !editor.hover_state.visible(),
17827            "Hover popover should be hidden when code action menu is shown"
17828        );
17829        // Hide code actions
17830        editor.context_menu.take();
17831    });
17832
17833    // Case 2: Test that code completions hide hover popover
17834    cx.dispatch_action(Hover);
17835    hover_requests.next().await;
17836    cx.condition(|editor, _| editor.hover_state.visible()).await;
17837    let counter = Arc::new(AtomicUsize::new(0));
17838    let mut completion_requests =
17839        cx.set_request_handler::<lsp::request::Completion, _, _>(move |_, _, _| {
17840            let counter = counter.clone();
17841            async move {
17842                counter.fetch_add(1, atomic::Ordering::Release);
17843                Ok(Some(lsp::CompletionResponse::Array(vec![
17844                    lsp::CompletionItem {
17845                        label: "main".into(),
17846                        kind: Some(lsp::CompletionItemKind::FUNCTION),
17847                        detail: Some("() -> ()".to_string()),
17848                        ..Default::default()
17849                    },
17850                    lsp::CompletionItem {
17851                        label: "TestStruct".into(),
17852                        kind: Some(lsp::CompletionItemKind::STRUCT),
17853                        detail: Some("struct TestStruct".to_string()),
17854                        ..Default::default()
17855                    },
17856                ])))
17857            }
17858        });
17859    cx.update_editor(|editor, window, cx| {
17860        editor.show_completions(&ShowCompletions { trigger: None }, window, cx);
17861    });
17862    completion_requests.next().await;
17863    cx.condition(|editor, _| editor.context_menu_visible())
17864        .await;
17865    cx.update_editor(|editor, _, _| {
17866        assert!(
17867            !editor.hover_state.visible(),
17868            "Hover popover should be hidden when completion menu is shown"
17869        );
17870    });
17871}
17872
17873#[gpui::test]
17874async fn test_completions_resolve_happens_once(cx: &mut TestAppContext) {
17875    init_test(cx, |_| {});
17876
17877    let mut cx = EditorLspTestContext::new_rust(
17878        lsp::ServerCapabilities {
17879            completion_provider: Some(lsp::CompletionOptions {
17880                trigger_characters: Some(vec![".".to_string()]),
17881                resolve_provider: Some(true),
17882                ..Default::default()
17883            }),
17884            ..Default::default()
17885        },
17886        cx,
17887    )
17888    .await;
17889
17890    cx.set_state("fn main() { let a = 2ˇ; }");
17891    cx.simulate_keystroke(".");
17892
17893    let unresolved_item_1 = lsp::CompletionItem {
17894        label: "id".to_string(),
17895        filter_text: Some("id".to_string()),
17896        detail: None,
17897        documentation: None,
17898        text_edit: Some(lsp::CompletionTextEdit::Edit(lsp::TextEdit {
17899            range: lsp::Range::new(lsp::Position::new(0, 22), lsp::Position::new(0, 22)),
17900            new_text: ".id".to_string(),
17901        })),
17902        ..lsp::CompletionItem::default()
17903    };
17904    let resolved_item_1 = lsp::CompletionItem {
17905        additional_text_edits: Some(vec![lsp::TextEdit {
17906            range: lsp::Range::new(lsp::Position::new(0, 20), lsp::Position::new(0, 22)),
17907            new_text: "!!".to_string(),
17908        }]),
17909        ..unresolved_item_1.clone()
17910    };
17911    let unresolved_item_2 = lsp::CompletionItem {
17912        label: "other".to_string(),
17913        filter_text: Some("other".to_string()),
17914        detail: None,
17915        documentation: None,
17916        text_edit: Some(lsp::CompletionTextEdit::Edit(lsp::TextEdit {
17917            range: lsp::Range::new(lsp::Position::new(0, 22), lsp::Position::new(0, 22)),
17918            new_text: ".other".to_string(),
17919        })),
17920        ..lsp::CompletionItem::default()
17921    };
17922    let resolved_item_2 = lsp::CompletionItem {
17923        additional_text_edits: Some(vec![lsp::TextEdit {
17924            range: lsp::Range::new(lsp::Position::new(0, 20), lsp::Position::new(0, 22)),
17925            new_text: "??".to_string(),
17926        }]),
17927        ..unresolved_item_2.clone()
17928    };
17929
17930    let resolve_requests_1 = Arc::new(AtomicUsize::new(0));
17931    let resolve_requests_2 = Arc::new(AtomicUsize::new(0));
17932    cx.lsp
17933        .server
17934        .on_request::<lsp::request::ResolveCompletionItem, _, _>({
17935            let unresolved_item_1 = unresolved_item_1.clone();
17936            let resolved_item_1 = resolved_item_1.clone();
17937            let unresolved_item_2 = unresolved_item_2.clone();
17938            let resolved_item_2 = resolved_item_2.clone();
17939            let resolve_requests_1 = resolve_requests_1.clone();
17940            let resolve_requests_2 = resolve_requests_2.clone();
17941            move |unresolved_request, _| {
17942                let unresolved_item_1 = unresolved_item_1.clone();
17943                let resolved_item_1 = resolved_item_1.clone();
17944                let unresolved_item_2 = unresolved_item_2.clone();
17945                let resolved_item_2 = resolved_item_2.clone();
17946                let resolve_requests_1 = resolve_requests_1.clone();
17947                let resolve_requests_2 = resolve_requests_2.clone();
17948                async move {
17949                    if unresolved_request == unresolved_item_1 {
17950                        resolve_requests_1.fetch_add(1, atomic::Ordering::Release);
17951                        Ok(resolved_item_1.clone())
17952                    } else if unresolved_request == unresolved_item_2 {
17953                        resolve_requests_2.fetch_add(1, atomic::Ordering::Release);
17954                        Ok(resolved_item_2.clone())
17955                    } else {
17956                        panic!("Unexpected completion item {unresolved_request:?}")
17957                    }
17958                }
17959            }
17960        })
17961        .detach();
17962
17963    cx.set_request_handler::<lsp::request::Completion, _, _>(move |_, _, _| {
17964        let unresolved_item_1 = unresolved_item_1.clone();
17965        let unresolved_item_2 = unresolved_item_2.clone();
17966        async move {
17967            Ok(Some(lsp::CompletionResponse::Array(vec![
17968                unresolved_item_1,
17969                unresolved_item_2,
17970            ])))
17971        }
17972    })
17973    .next()
17974    .await;
17975
17976    cx.condition(|editor, _| editor.context_menu_visible())
17977        .await;
17978    cx.update_editor(|editor, _, _| {
17979        let context_menu = editor.context_menu.borrow_mut();
17980        let context_menu = context_menu
17981            .as_ref()
17982            .expect("Should have the context menu deployed");
17983        match context_menu {
17984            CodeContextMenu::Completions(completions_menu) => {
17985                let completions = completions_menu.completions.borrow_mut();
17986                assert_eq!(
17987                    completions
17988                        .iter()
17989                        .map(|completion| &completion.label.text)
17990                        .collect::<Vec<_>>(),
17991                    vec!["id", "other"]
17992                )
17993            }
17994            CodeContextMenu::CodeActions(_) => panic!("Should show the completions menu"),
17995        }
17996    });
17997    cx.run_until_parked();
17998
17999    cx.update_editor(|editor, window, cx| {
18000        editor.context_menu_next(&ContextMenuNext, window, cx);
18001    });
18002    cx.run_until_parked();
18003    cx.update_editor(|editor, window, cx| {
18004        editor.context_menu_prev(&ContextMenuPrevious, window, cx);
18005    });
18006    cx.run_until_parked();
18007    cx.update_editor(|editor, window, cx| {
18008        editor.context_menu_next(&ContextMenuNext, window, cx);
18009    });
18010    cx.run_until_parked();
18011    cx.update_editor(|editor, window, cx| {
18012        editor
18013            .compose_completion(&ComposeCompletion::default(), window, cx)
18014            .expect("No task returned")
18015    })
18016    .await
18017    .expect("Completion failed");
18018    cx.run_until_parked();
18019
18020    cx.update_editor(|editor, _, cx| {
18021        assert_eq!(
18022            resolve_requests_1.load(atomic::Ordering::Acquire),
18023            1,
18024            "Should always resolve once despite multiple selections"
18025        );
18026        assert_eq!(
18027            resolve_requests_2.load(atomic::Ordering::Acquire),
18028            1,
18029            "Should always resolve once after multiple selections and applying the completion"
18030        );
18031        assert_eq!(
18032            editor.text(cx),
18033            "fn main() { let a = ??.other; }",
18034            "Should use resolved data when applying the completion"
18035        );
18036    });
18037}
18038
18039#[gpui::test]
18040async fn test_completions_default_resolve_data_handling(cx: &mut TestAppContext) {
18041    init_test(cx, |_| {});
18042
18043    let item_0 = lsp::CompletionItem {
18044        label: "abs".into(),
18045        insert_text: Some("abs".into()),
18046        data: Some(json!({ "very": "special"})),
18047        insert_text_mode: Some(lsp::InsertTextMode::ADJUST_INDENTATION),
18048        text_edit: Some(lsp::CompletionTextEdit::InsertAndReplace(
18049            lsp::InsertReplaceEdit {
18050                new_text: "abs".to_string(),
18051                insert: lsp::Range::default(),
18052                replace: lsp::Range::default(),
18053            },
18054        )),
18055        ..lsp::CompletionItem::default()
18056    };
18057    let items = iter::once(item_0.clone())
18058        .chain((11..51).map(|i| lsp::CompletionItem {
18059            label: format!("item_{}", i),
18060            insert_text: Some(format!("item_{}", i)),
18061            insert_text_format: Some(lsp::InsertTextFormat::PLAIN_TEXT),
18062            ..lsp::CompletionItem::default()
18063        }))
18064        .collect::<Vec<_>>();
18065
18066    let default_commit_characters = vec!["?".to_string()];
18067    let default_data = json!({ "default": "data"});
18068    let default_insert_text_format = lsp::InsertTextFormat::SNIPPET;
18069    let default_insert_text_mode = lsp::InsertTextMode::AS_IS;
18070    let default_edit_range = lsp::Range {
18071        start: lsp::Position {
18072            line: 0,
18073            character: 5,
18074        },
18075        end: lsp::Position {
18076            line: 0,
18077            character: 5,
18078        },
18079    };
18080
18081    let mut cx = EditorLspTestContext::new_rust(
18082        lsp::ServerCapabilities {
18083            completion_provider: Some(lsp::CompletionOptions {
18084                trigger_characters: Some(vec![".".to_string()]),
18085                resolve_provider: Some(true),
18086                ..Default::default()
18087            }),
18088            ..Default::default()
18089        },
18090        cx,
18091    )
18092    .await;
18093
18094    cx.set_state("fn main() { let a = 2ˇ; }");
18095    cx.simulate_keystroke(".");
18096
18097    let completion_data = default_data.clone();
18098    let completion_characters = default_commit_characters.clone();
18099    let completion_items = items.clone();
18100    cx.set_request_handler::<lsp::request::Completion, _, _>(move |_, _, _| {
18101        let default_data = completion_data.clone();
18102        let default_commit_characters = completion_characters.clone();
18103        let items = completion_items.clone();
18104        async move {
18105            Ok(Some(lsp::CompletionResponse::List(lsp::CompletionList {
18106                items,
18107                item_defaults: Some(lsp::CompletionListItemDefaults {
18108                    data: Some(default_data.clone()),
18109                    commit_characters: Some(default_commit_characters.clone()),
18110                    edit_range: Some(lsp::CompletionListItemDefaultsEditRange::Range(
18111                        default_edit_range,
18112                    )),
18113                    insert_text_format: Some(default_insert_text_format),
18114                    insert_text_mode: Some(default_insert_text_mode),
18115                }),
18116                ..lsp::CompletionList::default()
18117            })))
18118        }
18119    })
18120    .next()
18121    .await;
18122
18123    let resolved_items = Arc::new(Mutex::new(Vec::new()));
18124    cx.lsp
18125        .server
18126        .on_request::<lsp::request::ResolveCompletionItem, _, _>({
18127            let closure_resolved_items = resolved_items.clone();
18128            move |item_to_resolve, _| {
18129                let closure_resolved_items = closure_resolved_items.clone();
18130                async move {
18131                    closure_resolved_items.lock().push(item_to_resolve.clone());
18132                    Ok(item_to_resolve)
18133                }
18134            }
18135        })
18136        .detach();
18137
18138    cx.condition(|editor, _| editor.context_menu_visible())
18139        .await;
18140    cx.run_until_parked();
18141    cx.update_editor(|editor, _, _| {
18142        let menu = editor.context_menu.borrow_mut();
18143        match menu.as_ref().expect("should have the completions menu") {
18144            CodeContextMenu::Completions(completions_menu) => {
18145                assert_eq!(
18146                    completions_menu
18147                        .entries
18148                        .borrow()
18149                        .iter()
18150                        .map(|mat| mat.string.clone())
18151                        .collect::<Vec<String>>(),
18152                    items
18153                        .iter()
18154                        .map(|completion| completion.label.clone())
18155                        .collect::<Vec<String>>()
18156                );
18157            }
18158            CodeContextMenu::CodeActions(_) => panic!("Expected to have the completions menu"),
18159        }
18160    });
18161    // Approximate initial displayed interval is 0..12. With extra item padding of 4 this is 0..16
18162    // with 4 from the end.
18163    assert_eq!(
18164        *resolved_items.lock(),
18165        [&items[0..16], &items[items.len() - 4..items.len()]]
18166            .concat()
18167            .iter()
18168            .cloned()
18169            .map(|mut item| {
18170                if item.data.is_none() {
18171                    item.data = Some(default_data.clone());
18172                }
18173                item
18174            })
18175            .collect::<Vec<lsp::CompletionItem>>(),
18176        "Items sent for resolve should be unchanged modulo resolve `data` filled with default if missing"
18177    );
18178    resolved_items.lock().clear();
18179
18180    cx.update_editor(|editor, window, cx| {
18181        editor.context_menu_prev(&ContextMenuPrevious, window, cx);
18182    });
18183    cx.run_until_parked();
18184    // Completions that have already been resolved are skipped.
18185    assert_eq!(
18186        *resolved_items.lock(),
18187        items[items.len() - 17..items.len() - 4]
18188            .iter()
18189            .cloned()
18190            .map(|mut item| {
18191                if item.data.is_none() {
18192                    item.data = Some(default_data.clone());
18193                }
18194                item
18195            })
18196            .collect::<Vec<lsp::CompletionItem>>()
18197    );
18198    resolved_items.lock().clear();
18199}
18200
18201#[gpui::test]
18202async fn test_completions_in_languages_with_extra_word_characters(cx: &mut TestAppContext) {
18203    init_test(cx, |_| {});
18204
18205    let mut cx = EditorLspTestContext::new(
18206        Language::new(
18207            LanguageConfig {
18208                matcher: LanguageMatcher {
18209                    path_suffixes: vec!["jsx".into()],
18210                    ..Default::default()
18211                },
18212                overrides: [(
18213                    "element".into(),
18214                    LanguageConfigOverride {
18215                        completion_query_characters: Override::Set(['-'].into_iter().collect()),
18216                        ..Default::default()
18217                    },
18218                )]
18219                .into_iter()
18220                .collect(),
18221                ..Default::default()
18222            },
18223            Some(tree_sitter_typescript::LANGUAGE_TSX.into()),
18224        )
18225        .with_override_query("(jsx_self_closing_element) @element")
18226        .unwrap(),
18227        lsp::ServerCapabilities {
18228            completion_provider: Some(lsp::CompletionOptions {
18229                trigger_characters: Some(vec![":".to_string()]),
18230                ..Default::default()
18231            }),
18232            ..Default::default()
18233        },
18234        cx,
18235    )
18236    .await;
18237
18238    cx.lsp
18239        .set_request_handler::<lsp::request::Completion, _, _>(move |_, _| async move {
18240            Ok(Some(lsp::CompletionResponse::Array(vec![
18241                lsp::CompletionItem {
18242                    label: "bg-blue".into(),
18243                    ..Default::default()
18244                },
18245                lsp::CompletionItem {
18246                    label: "bg-red".into(),
18247                    ..Default::default()
18248                },
18249                lsp::CompletionItem {
18250                    label: "bg-yellow".into(),
18251                    ..Default::default()
18252                },
18253            ])))
18254        });
18255
18256    cx.set_state(r#"<p class="bgˇ" />"#);
18257
18258    // Trigger completion when typing a dash, because the dash is an extra
18259    // word character in the 'element' scope, which contains the cursor.
18260    cx.simulate_keystroke("-");
18261    cx.executor().run_until_parked();
18262    cx.update_editor(|editor, _, _| {
18263        if let Some(CodeContextMenu::Completions(menu)) = editor.context_menu.borrow_mut().as_ref()
18264        {
18265            assert_eq!(
18266                completion_menu_entries(menu),
18267                &["bg-blue", "bg-red", "bg-yellow"]
18268            );
18269        } else {
18270            panic!("expected completion menu to be open");
18271        }
18272    });
18273
18274    cx.simulate_keystroke("l");
18275    cx.executor().run_until_parked();
18276    cx.update_editor(|editor, _, _| {
18277        if let Some(CodeContextMenu::Completions(menu)) = editor.context_menu.borrow_mut().as_ref()
18278        {
18279            assert_eq!(completion_menu_entries(menu), &["bg-blue", "bg-yellow"]);
18280        } else {
18281            panic!("expected completion menu to be open");
18282        }
18283    });
18284
18285    // When filtering completions, consider the character after the '-' to
18286    // be the start of a subword.
18287    cx.set_state(r#"<p class="yelˇ" />"#);
18288    cx.simulate_keystroke("l");
18289    cx.executor().run_until_parked();
18290    cx.update_editor(|editor, _, _| {
18291        if let Some(CodeContextMenu::Completions(menu)) = editor.context_menu.borrow_mut().as_ref()
18292        {
18293            assert_eq!(completion_menu_entries(menu), &["bg-yellow"]);
18294        } else {
18295            panic!("expected completion menu to be open");
18296        }
18297    });
18298}
18299
18300fn completion_menu_entries(menu: &CompletionsMenu) -> Vec<String> {
18301    let entries = menu.entries.borrow();
18302    entries.iter().map(|mat| mat.string.clone()).collect()
18303}
18304
18305#[gpui::test]
18306async fn test_document_format_with_prettier(cx: &mut TestAppContext) {
18307    init_test(cx, |settings| {
18308        settings.defaults.formatter = Some(FormatterList::Single(Formatter::Prettier))
18309    });
18310
18311    let fs = FakeFs::new(cx.executor());
18312    fs.insert_file(path!("/file.ts"), Default::default()).await;
18313
18314    let project = Project::test(fs, [path!("/file.ts").as_ref()], cx).await;
18315    let language_registry = project.read_with(cx, |project, _| project.languages().clone());
18316
18317    language_registry.add(Arc::new(Language::new(
18318        LanguageConfig {
18319            name: "TypeScript".into(),
18320            matcher: LanguageMatcher {
18321                path_suffixes: vec!["ts".to_string()],
18322                ..Default::default()
18323            },
18324            ..Default::default()
18325        },
18326        Some(tree_sitter_typescript::LANGUAGE_TYPESCRIPT.into()),
18327    )));
18328    update_test_language_settings(cx, |settings| {
18329        settings.defaults.prettier.get_or_insert_default().allowed = Some(true);
18330    });
18331
18332    let test_plugin = "test_plugin";
18333    let _ = language_registry.register_fake_lsp(
18334        "TypeScript",
18335        FakeLspAdapter {
18336            prettier_plugins: vec![test_plugin],
18337            ..Default::default()
18338        },
18339    );
18340
18341    let prettier_format_suffix = project::TEST_PRETTIER_FORMAT_SUFFIX;
18342    let buffer = project
18343        .update(cx, |project, cx| {
18344            project.open_local_buffer(path!("/file.ts"), cx)
18345        })
18346        .await
18347        .unwrap();
18348
18349    let buffer_text = "one\ntwo\nthree\n";
18350    let buffer = cx.new(|cx| MultiBuffer::singleton(buffer, cx));
18351    let (editor, cx) = cx.add_window_view(|window, cx| build_editor(buffer, window, cx));
18352    editor.update_in(cx, |editor, window, cx| {
18353        editor.set_text(buffer_text, window, cx)
18354    });
18355
18356    editor
18357        .update_in(cx, |editor, window, cx| {
18358            editor.perform_format(
18359                project.clone(),
18360                FormatTrigger::Manual,
18361                FormatTarget::Buffers(editor.buffer().read(cx).all_buffers()),
18362                window,
18363                cx,
18364            )
18365        })
18366        .unwrap()
18367        .await;
18368    assert_eq!(
18369        editor.update(cx, |editor, cx| editor.text(cx)),
18370        buffer_text.to_string() + prettier_format_suffix,
18371        "Test prettier formatting was not applied to the original buffer text",
18372    );
18373
18374    update_test_language_settings(cx, |settings| {
18375        settings.defaults.formatter = Some(FormatterList::default())
18376    });
18377    let format = editor.update_in(cx, |editor, window, cx| {
18378        editor.perform_format(
18379            project.clone(),
18380            FormatTrigger::Manual,
18381            FormatTarget::Buffers(editor.buffer().read(cx).all_buffers()),
18382            window,
18383            cx,
18384        )
18385    });
18386    format.await.unwrap();
18387    assert_eq!(
18388        editor.update(cx, |editor, cx| editor.text(cx)),
18389        buffer_text.to_string() + prettier_format_suffix + "\n" + prettier_format_suffix,
18390        "Autoformatting (via test prettier) was not applied to the original buffer text",
18391    );
18392}
18393
18394#[gpui::test]
18395async fn test_addition_reverts(cx: &mut TestAppContext) {
18396    init_test(cx, |_| {});
18397    let mut cx = EditorLspTestContext::new_rust(lsp::ServerCapabilities::default(), cx).await;
18398    let base_text = indoc! {r#"
18399        struct Row;
18400        struct Row1;
18401        struct Row2;
18402
18403        struct Row4;
18404        struct Row5;
18405        struct Row6;
18406
18407        struct Row8;
18408        struct Row9;
18409        struct Row10;"#};
18410
18411    // When addition hunks are not adjacent to carets, no hunk revert is performed
18412    assert_hunk_revert(
18413        indoc! {r#"struct Row;
18414                   struct Row1;
18415                   struct Row1.1;
18416                   struct Row1.2;
18417                   struct Row2;ˇ
18418
18419                   struct Row4;
18420                   struct Row5;
18421                   struct Row6;
18422
18423                   struct Row8;
18424                   ˇstruct Row9;
18425                   struct Row9.1;
18426                   struct Row9.2;
18427                   struct Row9.3;
18428                   struct Row10;"#},
18429        vec![DiffHunkStatusKind::Added, DiffHunkStatusKind::Added],
18430        indoc! {r#"struct Row;
18431                   struct Row1;
18432                   struct Row1.1;
18433                   struct Row1.2;
18434                   struct Row2;ˇ
18435
18436                   struct Row4;
18437                   struct Row5;
18438                   struct Row6;
18439
18440                   struct Row8;
18441                   ˇstruct Row9;
18442                   struct Row9.1;
18443                   struct Row9.2;
18444                   struct Row9.3;
18445                   struct Row10;"#},
18446        base_text,
18447        &mut cx,
18448    );
18449    // Same for selections
18450    assert_hunk_revert(
18451        indoc! {r#"struct Row;
18452                   struct Row1;
18453                   struct Row2;
18454                   struct Row2.1;
18455                   struct Row2.2;
18456                   «ˇ
18457                   struct Row4;
18458                   struct» Row5;
18459                   «struct Row6;
18460                   ˇ»
18461                   struct Row9.1;
18462                   struct Row9.2;
18463                   struct Row9.3;
18464                   struct Row8;
18465                   struct Row9;
18466                   struct Row10;"#},
18467        vec![DiffHunkStatusKind::Added, DiffHunkStatusKind::Added],
18468        indoc! {r#"struct Row;
18469                   struct Row1;
18470                   struct Row2;
18471                   struct Row2.1;
18472                   struct Row2.2;
18473                   «ˇ
18474                   struct Row4;
18475                   struct» Row5;
18476                   «struct Row6;
18477                   ˇ»
18478                   struct Row9.1;
18479                   struct Row9.2;
18480                   struct Row9.3;
18481                   struct Row8;
18482                   struct Row9;
18483                   struct Row10;"#},
18484        base_text,
18485        &mut cx,
18486    );
18487
18488    // When carets and selections intersect the addition hunks, those are reverted.
18489    // Adjacent carets got merged.
18490    assert_hunk_revert(
18491        indoc! {r#"struct Row;
18492                   ˇ// something on the top
18493                   struct Row1;
18494                   struct Row2;
18495                   struct Roˇw3.1;
18496                   struct Row2.2;
18497                   struct Row2.3;ˇ
18498
18499                   struct Row4;
18500                   struct ˇRow5.1;
18501                   struct Row5.2;
18502                   struct «Rowˇ»5.3;
18503                   struct Row5;
18504                   struct Row6;
18505                   ˇ
18506                   struct Row9.1;
18507                   struct «Rowˇ»9.2;
18508                   struct «ˇRow»9.3;
18509                   struct Row8;
18510                   struct Row9;
18511                   «ˇ// something on bottom»
18512                   struct Row10;"#},
18513        vec![
18514            DiffHunkStatusKind::Added,
18515            DiffHunkStatusKind::Added,
18516            DiffHunkStatusKind::Added,
18517            DiffHunkStatusKind::Added,
18518            DiffHunkStatusKind::Added,
18519        ],
18520        indoc! {r#"struct Row;
18521                   ˇstruct Row1;
18522                   struct Row2;
18523                   ˇ
18524                   struct Row4;
18525                   ˇstruct Row5;
18526                   struct Row6;
18527                   ˇ
18528                   ˇstruct Row8;
18529                   struct Row9;
18530                   ˇstruct Row10;"#},
18531        base_text,
18532        &mut cx,
18533    );
18534}
18535
18536#[gpui::test]
18537async fn test_modification_reverts(cx: &mut TestAppContext) {
18538    init_test(cx, |_| {});
18539    let mut cx = EditorLspTestContext::new_rust(lsp::ServerCapabilities::default(), cx).await;
18540    let base_text = indoc! {r#"
18541        struct Row;
18542        struct Row1;
18543        struct Row2;
18544
18545        struct Row4;
18546        struct Row5;
18547        struct Row6;
18548
18549        struct Row8;
18550        struct Row9;
18551        struct Row10;"#};
18552
18553    // Modification hunks behave the same as the addition ones.
18554    assert_hunk_revert(
18555        indoc! {r#"struct Row;
18556                   struct Row1;
18557                   struct Row33;
18558                   ˇ
18559                   struct Row4;
18560                   struct Row5;
18561                   struct Row6;
18562                   ˇ
18563                   struct Row99;
18564                   struct Row9;
18565                   struct Row10;"#},
18566        vec![DiffHunkStatusKind::Modified, DiffHunkStatusKind::Modified],
18567        indoc! {r#"struct Row;
18568                   struct Row1;
18569                   struct Row33;
18570                   ˇ
18571                   struct Row4;
18572                   struct Row5;
18573                   struct Row6;
18574                   ˇ
18575                   struct Row99;
18576                   struct Row9;
18577                   struct Row10;"#},
18578        base_text,
18579        &mut cx,
18580    );
18581    assert_hunk_revert(
18582        indoc! {r#"struct Row;
18583                   struct Row1;
18584                   struct Row33;
18585                   «ˇ
18586                   struct Row4;
18587                   struct» Row5;
18588                   «struct Row6;
18589                   ˇ»
18590                   struct Row99;
18591                   struct Row9;
18592                   struct Row10;"#},
18593        vec![DiffHunkStatusKind::Modified, DiffHunkStatusKind::Modified],
18594        indoc! {r#"struct Row;
18595                   struct Row1;
18596                   struct Row33;
18597                   «ˇ
18598                   struct Row4;
18599                   struct» Row5;
18600                   «struct Row6;
18601                   ˇ»
18602                   struct Row99;
18603                   struct Row9;
18604                   struct Row10;"#},
18605        base_text,
18606        &mut cx,
18607    );
18608
18609    assert_hunk_revert(
18610        indoc! {r#"ˇstruct Row1.1;
18611                   struct Row1;
18612                   «ˇstr»uct Row22;
18613
18614                   struct ˇRow44;
18615                   struct Row5;
18616                   struct «Rˇ»ow66;ˇ
18617
18618                   «struˇ»ct Row88;
18619                   struct Row9;
18620                   struct Row1011;ˇ"#},
18621        vec![
18622            DiffHunkStatusKind::Modified,
18623            DiffHunkStatusKind::Modified,
18624            DiffHunkStatusKind::Modified,
18625            DiffHunkStatusKind::Modified,
18626            DiffHunkStatusKind::Modified,
18627            DiffHunkStatusKind::Modified,
18628        ],
18629        indoc! {r#"struct Row;
18630                   ˇstruct Row1;
18631                   struct Row2;
18632                   ˇ
18633                   struct Row4;
18634                   ˇstruct Row5;
18635                   struct Row6;
18636                   ˇ
18637                   struct Row8;
18638                   ˇstruct Row9;
18639                   struct Row10;ˇ"#},
18640        base_text,
18641        &mut cx,
18642    );
18643}
18644
18645#[gpui::test]
18646async fn test_deleting_over_diff_hunk(cx: &mut TestAppContext) {
18647    init_test(cx, |_| {});
18648    let mut cx = EditorLspTestContext::new_rust(lsp::ServerCapabilities::default(), cx).await;
18649    let base_text = indoc! {r#"
18650        one
18651
18652        two
18653        three
18654        "#};
18655
18656    cx.set_head_text(base_text);
18657    cx.set_state("\nˇ\n");
18658    cx.executor().run_until_parked();
18659    cx.update_editor(|editor, _window, cx| {
18660        editor.expand_selected_diff_hunks(cx);
18661    });
18662    cx.executor().run_until_parked();
18663    cx.update_editor(|editor, window, cx| {
18664        editor.backspace(&Default::default(), window, cx);
18665    });
18666    cx.run_until_parked();
18667    cx.assert_state_with_diff(
18668        indoc! {r#"
18669
18670        - two
18671        - threeˇ
18672        +
18673        "#}
18674        .to_string(),
18675    );
18676}
18677
18678#[gpui::test]
18679async fn test_deletion_reverts(cx: &mut TestAppContext) {
18680    init_test(cx, |_| {});
18681    let mut cx = EditorLspTestContext::new_rust(lsp::ServerCapabilities::default(), cx).await;
18682    let base_text = indoc! {r#"struct Row;
18683struct Row1;
18684struct Row2;
18685
18686struct Row4;
18687struct Row5;
18688struct Row6;
18689
18690struct Row8;
18691struct Row9;
18692struct Row10;"#};
18693
18694    // Deletion hunks trigger with carets on adjacent rows, so carets and selections have to stay farther to avoid the revert
18695    assert_hunk_revert(
18696        indoc! {r#"struct Row;
18697                   struct Row2;
18698
18699                   ˇstruct Row4;
18700                   struct Row5;
18701                   struct Row6;
18702                   ˇ
18703                   struct Row8;
18704                   struct Row10;"#},
18705        vec![DiffHunkStatusKind::Deleted, DiffHunkStatusKind::Deleted],
18706        indoc! {r#"struct Row;
18707                   struct Row2;
18708
18709                   ˇstruct Row4;
18710                   struct Row5;
18711                   struct Row6;
18712                   ˇ
18713                   struct Row8;
18714                   struct Row10;"#},
18715        base_text,
18716        &mut cx,
18717    );
18718    assert_hunk_revert(
18719        indoc! {r#"struct Row;
18720                   struct Row2;
18721
18722                   «ˇstruct Row4;
18723                   struct» Row5;
18724                   «struct Row6;
18725                   ˇ»
18726                   struct Row8;
18727                   struct Row10;"#},
18728        vec![DiffHunkStatusKind::Deleted, DiffHunkStatusKind::Deleted],
18729        indoc! {r#"struct Row;
18730                   struct Row2;
18731
18732                   «ˇstruct Row4;
18733                   struct» Row5;
18734                   «struct Row6;
18735                   ˇ»
18736                   struct Row8;
18737                   struct Row10;"#},
18738        base_text,
18739        &mut cx,
18740    );
18741
18742    // Deletion hunks are ephemeral, so it's impossible to place the caret into them — Zed triggers reverts for lines, adjacent to carets and selections.
18743    assert_hunk_revert(
18744        indoc! {r#"struct Row;
18745                   ˇstruct Row2;
18746
18747                   struct Row4;
18748                   struct Row5;
18749                   struct Row6;
18750
18751                   struct Row8;ˇ
18752                   struct Row10;"#},
18753        vec![DiffHunkStatusKind::Deleted, DiffHunkStatusKind::Deleted],
18754        indoc! {r#"struct Row;
18755                   struct Row1;
18756                   ˇstruct Row2;
18757
18758                   struct Row4;
18759                   struct Row5;
18760                   struct Row6;
18761
18762                   struct Row8;ˇ
18763                   struct Row9;
18764                   struct Row10;"#},
18765        base_text,
18766        &mut cx,
18767    );
18768    assert_hunk_revert(
18769        indoc! {r#"struct Row;
18770                   struct Row2«ˇ;
18771                   struct Row4;
18772                   struct» Row5;
18773                   «struct Row6;
18774
18775                   struct Row8;ˇ»
18776                   struct Row10;"#},
18777        vec![
18778            DiffHunkStatusKind::Deleted,
18779            DiffHunkStatusKind::Deleted,
18780            DiffHunkStatusKind::Deleted,
18781        ],
18782        indoc! {r#"struct Row;
18783                   struct Row1;
18784                   struct Row2«ˇ;
18785
18786                   struct Row4;
18787                   struct» Row5;
18788                   «struct Row6;
18789
18790                   struct Row8;ˇ»
18791                   struct Row9;
18792                   struct Row10;"#},
18793        base_text,
18794        &mut cx,
18795    );
18796}
18797
18798#[gpui::test]
18799async fn test_multibuffer_reverts(cx: &mut TestAppContext) {
18800    init_test(cx, |_| {});
18801
18802    let base_text_1 = "aaaa\nbbbb\ncccc\ndddd\neeee\nffff\ngggg\nhhhh\niiii\njjjj";
18803    let base_text_2 = "llll\nmmmm\nnnnn\noooo\npppp\nqqqq\nrrrr\nssss\ntttt\nuuuu";
18804    let base_text_3 =
18805        "vvvv\nwwww\nxxxx\nyyyy\nzzzz\n{{{{\n||||\n}}}}\n~~~~\n\u{7f}\u{7f}\u{7f}\u{7f}";
18806
18807    let text_1 = edit_first_char_of_every_line(base_text_1);
18808    let text_2 = edit_first_char_of_every_line(base_text_2);
18809    let text_3 = edit_first_char_of_every_line(base_text_3);
18810
18811    let buffer_1 = cx.new(|cx| Buffer::local(text_1.clone(), cx));
18812    let buffer_2 = cx.new(|cx| Buffer::local(text_2.clone(), cx));
18813    let buffer_3 = cx.new(|cx| Buffer::local(text_3.clone(), cx));
18814
18815    let multibuffer = cx.new(|cx| {
18816        let mut multibuffer = MultiBuffer::new(ReadWrite);
18817        multibuffer.push_excerpts(
18818            buffer_1.clone(),
18819            [
18820                ExcerptRange::new(Point::new(0, 0)..Point::new(3, 0)),
18821                ExcerptRange::new(Point::new(5, 0)..Point::new(7, 0)),
18822                ExcerptRange::new(Point::new(9, 0)..Point::new(10, 4)),
18823            ],
18824            cx,
18825        );
18826        multibuffer.push_excerpts(
18827            buffer_2.clone(),
18828            [
18829                ExcerptRange::new(Point::new(0, 0)..Point::new(3, 0)),
18830                ExcerptRange::new(Point::new(5, 0)..Point::new(7, 0)),
18831                ExcerptRange::new(Point::new(9, 0)..Point::new(10, 4)),
18832            ],
18833            cx,
18834        );
18835        multibuffer.push_excerpts(
18836            buffer_3.clone(),
18837            [
18838                ExcerptRange::new(Point::new(0, 0)..Point::new(3, 0)),
18839                ExcerptRange::new(Point::new(5, 0)..Point::new(7, 0)),
18840                ExcerptRange::new(Point::new(9, 0)..Point::new(10, 4)),
18841            ],
18842            cx,
18843        );
18844        multibuffer
18845    });
18846
18847    let fs = FakeFs::new(cx.executor());
18848    let project = Project::test(fs, [path!("/").as_ref()], cx).await;
18849    let (editor, cx) = cx
18850        .add_window_view(|window, cx| build_editor_with_project(project, multibuffer, window, cx));
18851    editor.update_in(cx, |editor, _window, cx| {
18852        for (buffer, diff_base) in [
18853            (buffer_1.clone(), base_text_1),
18854            (buffer_2.clone(), base_text_2),
18855            (buffer_3.clone(), base_text_3),
18856        ] {
18857            let diff = cx.new(|cx| BufferDiff::new_with_base_text(diff_base, &buffer, cx));
18858            editor
18859                .buffer
18860                .update(cx, |buffer, cx| buffer.add_diff(diff, cx));
18861        }
18862    });
18863    cx.executor().run_until_parked();
18864
18865    editor.update_in(cx, |editor, window, cx| {
18866        assert_eq!(editor.text(cx), "Xaaa\nXbbb\nXccc\n\nXfff\nXggg\n\nXjjj\nXlll\nXmmm\nXnnn\n\nXqqq\nXrrr\n\nXuuu\nXvvv\nXwww\nXxxx\n\nX{{{\nX|||\n\nX\u{7f}\u{7f}\u{7f}");
18867        editor.select_all(&SelectAll, window, cx);
18868        editor.git_restore(&Default::default(), window, cx);
18869    });
18870    cx.executor().run_until_parked();
18871
18872    // When all ranges are selected, all buffer hunks are reverted.
18873    editor.update(cx, |editor, cx| {
18874        assert_eq!(editor.text(cx), "aaaa\nbbbb\ncccc\ndddd\neeee\nffff\ngggg\nhhhh\niiii\njjjj\n\n\nllll\nmmmm\nnnnn\noooo\npppp\nqqqq\nrrrr\nssss\ntttt\nuuuu\n\n\nvvvv\nwwww\nxxxx\nyyyy\nzzzz\n{{{{\n||||\n}}}}\n~~~~\n\u{7f}\u{7f}\u{7f}\u{7f}\n\n");
18875    });
18876    buffer_1.update(cx, |buffer, _| {
18877        assert_eq!(buffer.text(), base_text_1);
18878    });
18879    buffer_2.update(cx, |buffer, _| {
18880        assert_eq!(buffer.text(), base_text_2);
18881    });
18882    buffer_3.update(cx, |buffer, _| {
18883        assert_eq!(buffer.text(), base_text_3);
18884    });
18885
18886    editor.update_in(cx, |editor, window, cx| {
18887        editor.undo(&Default::default(), window, cx);
18888    });
18889
18890    editor.update_in(cx, |editor, window, cx| {
18891        editor.change_selections(SelectionEffects::no_scroll(), window, cx, |s| {
18892            s.select_ranges(Some(Point::new(0, 0)..Point::new(6, 0)));
18893        });
18894        editor.git_restore(&Default::default(), window, cx);
18895    });
18896
18897    // Now, when all ranges selected belong to buffer_1, the revert should succeed,
18898    // but not affect buffer_2 and its related excerpts.
18899    editor.update(cx, |editor, cx| {
18900        assert_eq!(
18901            editor.text(cx),
18902            "aaaa\nbbbb\ncccc\ndddd\neeee\nffff\ngggg\nhhhh\niiii\njjjj\n\n\nXlll\nXmmm\nXnnn\n\nXqqq\nXrrr\n\nXuuu\nXvvv\nXwww\nXxxx\n\nX{{{\nX|||\n\nX\u{7f}\u{7f}\u{7f}"
18903        );
18904    });
18905    buffer_1.update(cx, |buffer, _| {
18906        assert_eq!(buffer.text(), base_text_1);
18907    });
18908    buffer_2.update(cx, |buffer, _| {
18909        assert_eq!(
18910            buffer.text(),
18911            "Xlll\nXmmm\nXnnn\nXooo\nXppp\nXqqq\nXrrr\nXsss\nXttt\nXuuu"
18912        );
18913    });
18914    buffer_3.update(cx, |buffer, _| {
18915        assert_eq!(
18916            buffer.text(),
18917            "Xvvv\nXwww\nXxxx\nXyyy\nXzzz\nX{{{\nX|||\nX}}}\nX~~~\nX\u{7f}\u{7f}\u{7f}"
18918        );
18919    });
18920
18921    fn edit_first_char_of_every_line(text: &str) -> String {
18922        text.split('\n')
18923            .map(|line| format!("X{}", &line[1..]))
18924            .collect::<Vec<_>>()
18925            .join("\n")
18926    }
18927}
18928
18929#[gpui::test]
18930async fn test_multibuffer_in_navigation_history(cx: &mut TestAppContext) {
18931    init_test(cx, |_| {});
18932
18933    let cols = 4;
18934    let rows = 10;
18935    let sample_text_1 = sample_text(rows, cols, 'a');
18936    assert_eq!(
18937        sample_text_1,
18938        "aaaa\nbbbb\ncccc\ndddd\neeee\nffff\ngggg\nhhhh\niiii\njjjj"
18939    );
18940    let sample_text_2 = sample_text(rows, cols, 'l');
18941    assert_eq!(
18942        sample_text_2,
18943        "llll\nmmmm\nnnnn\noooo\npppp\nqqqq\nrrrr\nssss\ntttt\nuuuu"
18944    );
18945    let sample_text_3 = sample_text(rows, cols, 'v');
18946    assert_eq!(
18947        sample_text_3,
18948        "vvvv\nwwww\nxxxx\nyyyy\nzzzz\n{{{{\n||||\n}}}}\n~~~~\n\u{7f}\u{7f}\u{7f}\u{7f}"
18949    );
18950
18951    let buffer_1 = cx.new(|cx| Buffer::local(sample_text_1.clone(), cx));
18952    let buffer_2 = cx.new(|cx| Buffer::local(sample_text_2.clone(), cx));
18953    let buffer_3 = cx.new(|cx| Buffer::local(sample_text_3.clone(), cx));
18954
18955    let multi_buffer = cx.new(|cx| {
18956        let mut multibuffer = MultiBuffer::new(ReadWrite);
18957        multibuffer.push_excerpts(
18958            buffer_1.clone(),
18959            [
18960                ExcerptRange::new(Point::new(0, 0)..Point::new(3, 0)),
18961                ExcerptRange::new(Point::new(5, 0)..Point::new(7, 0)),
18962                ExcerptRange::new(Point::new(9, 0)..Point::new(10, 4)),
18963            ],
18964            cx,
18965        );
18966        multibuffer.push_excerpts(
18967            buffer_2.clone(),
18968            [
18969                ExcerptRange::new(Point::new(0, 0)..Point::new(3, 0)),
18970                ExcerptRange::new(Point::new(5, 0)..Point::new(7, 0)),
18971                ExcerptRange::new(Point::new(9, 0)..Point::new(10, 4)),
18972            ],
18973            cx,
18974        );
18975        multibuffer.push_excerpts(
18976            buffer_3.clone(),
18977            [
18978                ExcerptRange::new(Point::new(0, 0)..Point::new(3, 0)),
18979                ExcerptRange::new(Point::new(5, 0)..Point::new(7, 0)),
18980                ExcerptRange::new(Point::new(9, 0)..Point::new(10, 4)),
18981            ],
18982            cx,
18983        );
18984        multibuffer
18985    });
18986
18987    let fs = FakeFs::new(cx.executor());
18988    fs.insert_tree(
18989        "/a",
18990        json!({
18991            "main.rs": sample_text_1,
18992            "other.rs": sample_text_2,
18993            "lib.rs": sample_text_3,
18994        }),
18995    )
18996    .await;
18997    let project = Project::test(fs, ["/a".as_ref()], cx).await;
18998    let workspace = cx.add_window(|window, cx| Workspace::test_new(project.clone(), window, cx));
18999    let cx = &mut VisualTestContext::from_window(*workspace.deref(), cx);
19000    let multi_buffer_editor = cx.new_window_entity(|window, cx| {
19001        Editor::new(
19002            EditorMode::full(),
19003            multi_buffer,
19004            Some(project.clone()),
19005            window,
19006            cx,
19007        )
19008    });
19009    let multibuffer_item_id = workspace
19010        .update(cx, |workspace, window, cx| {
19011            assert!(
19012                workspace.active_item(cx).is_none(),
19013                "active item should be None before the first item is added"
19014            );
19015            workspace.add_item_to_active_pane(
19016                Box::new(multi_buffer_editor.clone()),
19017                None,
19018                true,
19019                window,
19020                cx,
19021            );
19022            let active_item = workspace
19023                .active_item(cx)
19024                .expect("should have an active item after adding the multi buffer");
19025            assert_eq!(
19026                active_item.buffer_kind(cx),
19027                ItemBufferKind::Multibuffer,
19028                "A multi buffer was expected to active after adding"
19029            );
19030            active_item.item_id()
19031        })
19032        .unwrap();
19033    cx.executor().run_until_parked();
19034
19035    multi_buffer_editor.update_in(cx, |editor, window, cx| {
19036        editor.change_selections(
19037            SelectionEffects::scroll(Autoscroll::Next),
19038            window,
19039            cx,
19040            |s| s.select_ranges(Some(1..2)),
19041        );
19042        editor.open_excerpts(&OpenExcerpts, window, cx);
19043    });
19044    cx.executor().run_until_parked();
19045    let first_item_id = workspace
19046        .update(cx, |workspace, window, cx| {
19047            let active_item = workspace
19048                .active_item(cx)
19049                .expect("should have an active item after navigating into the 1st buffer");
19050            let first_item_id = active_item.item_id();
19051            assert_ne!(
19052                first_item_id, multibuffer_item_id,
19053                "Should navigate into the 1st buffer and activate it"
19054            );
19055            assert_eq!(
19056                active_item.buffer_kind(cx),
19057                ItemBufferKind::Singleton,
19058                "New active item should be a singleton buffer"
19059            );
19060            assert_eq!(
19061                active_item
19062                    .act_as::<Editor>(cx)
19063                    .expect("should have navigated into an editor for the 1st buffer")
19064                    .read(cx)
19065                    .text(cx),
19066                sample_text_1
19067            );
19068
19069            workspace
19070                .go_back(workspace.active_pane().downgrade(), window, cx)
19071                .detach_and_log_err(cx);
19072
19073            first_item_id
19074        })
19075        .unwrap();
19076    cx.executor().run_until_parked();
19077    workspace
19078        .update(cx, |workspace, _, cx| {
19079            let active_item = workspace
19080                .active_item(cx)
19081                .expect("should have an active item after navigating back");
19082            assert_eq!(
19083                active_item.item_id(),
19084                multibuffer_item_id,
19085                "Should navigate back to the multi buffer"
19086            );
19087            assert_eq!(active_item.buffer_kind(cx), ItemBufferKind::Multibuffer);
19088        })
19089        .unwrap();
19090
19091    multi_buffer_editor.update_in(cx, |editor, window, cx| {
19092        editor.change_selections(
19093            SelectionEffects::scroll(Autoscroll::Next),
19094            window,
19095            cx,
19096            |s| s.select_ranges(Some(39..40)),
19097        );
19098        editor.open_excerpts(&OpenExcerpts, window, cx);
19099    });
19100    cx.executor().run_until_parked();
19101    let second_item_id = workspace
19102        .update(cx, |workspace, window, cx| {
19103            let active_item = workspace
19104                .active_item(cx)
19105                .expect("should have an active item after navigating into the 2nd buffer");
19106            let second_item_id = active_item.item_id();
19107            assert_ne!(
19108                second_item_id, multibuffer_item_id,
19109                "Should navigate away from the multibuffer"
19110            );
19111            assert_ne!(
19112                second_item_id, first_item_id,
19113                "Should navigate into the 2nd buffer and activate it"
19114            );
19115            assert_eq!(
19116                active_item.buffer_kind(cx),
19117                ItemBufferKind::Singleton,
19118                "New active item should be a singleton buffer"
19119            );
19120            assert_eq!(
19121                active_item
19122                    .act_as::<Editor>(cx)
19123                    .expect("should have navigated into an editor")
19124                    .read(cx)
19125                    .text(cx),
19126                sample_text_2
19127            );
19128
19129            workspace
19130                .go_back(workspace.active_pane().downgrade(), window, cx)
19131                .detach_and_log_err(cx);
19132
19133            second_item_id
19134        })
19135        .unwrap();
19136    cx.executor().run_until_parked();
19137    workspace
19138        .update(cx, |workspace, _, cx| {
19139            let active_item = workspace
19140                .active_item(cx)
19141                .expect("should have an active item after navigating back from the 2nd buffer");
19142            assert_eq!(
19143                active_item.item_id(),
19144                multibuffer_item_id,
19145                "Should navigate back from the 2nd buffer to the multi buffer"
19146            );
19147            assert_eq!(active_item.buffer_kind(cx), ItemBufferKind::Multibuffer);
19148        })
19149        .unwrap();
19150
19151    multi_buffer_editor.update_in(cx, |editor, window, cx| {
19152        editor.change_selections(
19153            SelectionEffects::scroll(Autoscroll::Next),
19154            window,
19155            cx,
19156            |s| s.select_ranges(Some(70..70)),
19157        );
19158        editor.open_excerpts(&OpenExcerpts, window, cx);
19159    });
19160    cx.executor().run_until_parked();
19161    workspace
19162        .update(cx, |workspace, window, cx| {
19163            let active_item = workspace
19164                .active_item(cx)
19165                .expect("should have an active item after navigating into the 3rd buffer");
19166            let third_item_id = active_item.item_id();
19167            assert_ne!(
19168                third_item_id, multibuffer_item_id,
19169                "Should navigate into the 3rd buffer and activate it"
19170            );
19171            assert_ne!(third_item_id, first_item_id);
19172            assert_ne!(third_item_id, second_item_id);
19173            assert_eq!(
19174                active_item.buffer_kind(cx),
19175                ItemBufferKind::Singleton,
19176                "New active item should be a singleton buffer"
19177            );
19178            assert_eq!(
19179                active_item
19180                    .act_as::<Editor>(cx)
19181                    .expect("should have navigated into an editor")
19182                    .read(cx)
19183                    .text(cx),
19184                sample_text_3
19185            );
19186
19187            workspace
19188                .go_back(workspace.active_pane().downgrade(), window, cx)
19189                .detach_and_log_err(cx);
19190        })
19191        .unwrap();
19192    cx.executor().run_until_parked();
19193    workspace
19194        .update(cx, |workspace, _, cx| {
19195            let active_item = workspace
19196                .active_item(cx)
19197                .expect("should have an active item after navigating back from the 3rd buffer");
19198            assert_eq!(
19199                active_item.item_id(),
19200                multibuffer_item_id,
19201                "Should navigate back from the 3rd buffer to the multi buffer"
19202            );
19203            assert_eq!(active_item.buffer_kind(cx), ItemBufferKind::Multibuffer);
19204        })
19205        .unwrap();
19206}
19207
19208#[gpui::test]
19209async fn test_toggle_selected_diff_hunks(executor: BackgroundExecutor, cx: &mut TestAppContext) {
19210    init_test(cx, |_| {});
19211
19212    let mut cx = EditorTestContext::new(cx).await;
19213
19214    let diff_base = r#"
19215        use some::mod;
19216
19217        const A: u32 = 42;
19218
19219        fn main() {
19220            println!("hello");
19221
19222            println!("world");
19223        }
19224        "#
19225    .unindent();
19226
19227    cx.set_state(
19228        &r#"
19229        use some::modified;
19230
19231        ˇ
19232        fn main() {
19233            println!("hello there");
19234
19235            println!("around the");
19236            println!("world");
19237        }
19238        "#
19239        .unindent(),
19240    );
19241
19242    cx.set_head_text(&diff_base);
19243    executor.run_until_parked();
19244
19245    cx.update_editor(|editor, window, cx| {
19246        editor.go_to_next_hunk(&GoToHunk, window, cx);
19247        editor.toggle_selected_diff_hunks(&ToggleSelectedDiffHunks, window, cx);
19248    });
19249    executor.run_until_parked();
19250    cx.assert_state_with_diff(
19251        r#"
19252          use some::modified;
19253
19254
19255          fn main() {
19256        -     println!("hello");
19257        + ˇ    println!("hello there");
19258
19259              println!("around the");
19260              println!("world");
19261          }
19262        "#
19263        .unindent(),
19264    );
19265
19266    cx.update_editor(|editor, window, cx| {
19267        for _ in 0..2 {
19268            editor.go_to_next_hunk(&GoToHunk, window, cx);
19269            editor.toggle_selected_diff_hunks(&ToggleSelectedDiffHunks, window, cx);
19270        }
19271    });
19272    executor.run_until_parked();
19273    cx.assert_state_with_diff(
19274        r#"
19275        - use some::mod;
19276        + ˇuse some::modified;
19277
19278
19279          fn main() {
19280        -     println!("hello");
19281        +     println!("hello there");
19282
19283        +     println!("around the");
19284              println!("world");
19285          }
19286        "#
19287        .unindent(),
19288    );
19289
19290    cx.update_editor(|editor, window, cx| {
19291        editor.go_to_next_hunk(&GoToHunk, window, cx);
19292        editor.toggle_selected_diff_hunks(&ToggleSelectedDiffHunks, window, cx);
19293    });
19294    executor.run_until_parked();
19295    cx.assert_state_with_diff(
19296        r#"
19297        - use some::mod;
19298        + use some::modified;
19299
19300        - const A: u32 = 42;
19301          ˇ
19302          fn main() {
19303        -     println!("hello");
19304        +     println!("hello there");
19305
19306        +     println!("around the");
19307              println!("world");
19308          }
19309        "#
19310        .unindent(),
19311    );
19312
19313    cx.update_editor(|editor, window, cx| {
19314        editor.cancel(&Cancel, window, cx);
19315    });
19316
19317    cx.assert_state_with_diff(
19318        r#"
19319          use some::modified;
19320
19321          ˇ
19322          fn main() {
19323              println!("hello there");
19324
19325              println!("around the");
19326              println!("world");
19327          }
19328        "#
19329        .unindent(),
19330    );
19331}
19332
19333#[gpui::test]
19334async fn test_diff_base_change_with_expanded_diff_hunks(
19335    executor: BackgroundExecutor,
19336    cx: &mut TestAppContext,
19337) {
19338    init_test(cx, |_| {});
19339
19340    let mut cx = EditorTestContext::new(cx).await;
19341
19342    let diff_base = r#"
19343        use some::mod1;
19344        use some::mod2;
19345
19346        const A: u32 = 42;
19347        const B: u32 = 42;
19348        const C: u32 = 42;
19349
19350        fn main() {
19351            println!("hello");
19352
19353            println!("world");
19354        }
19355        "#
19356    .unindent();
19357
19358    cx.set_state(
19359        &r#"
19360        use some::mod2;
19361
19362        const A: u32 = 42;
19363        const C: u32 = 42;
19364
19365        fn main(ˇ) {
19366            //println!("hello");
19367
19368            println!("world");
19369            //
19370            //
19371        }
19372        "#
19373        .unindent(),
19374    );
19375
19376    cx.set_head_text(&diff_base);
19377    executor.run_until_parked();
19378
19379    cx.update_editor(|editor, window, cx| {
19380        editor.expand_all_diff_hunks(&ExpandAllDiffHunks, window, cx);
19381    });
19382    executor.run_until_parked();
19383    cx.assert_state_with_diff(
19384        r#"
19385        - use some::mod1;
19386          use some::mod2;
19387
19388          const A: u32 = 42;
19389        - const B: u32 = 42;
19390          const C: u32 = 42;
19391
19392          fn main(ˇ) {
19393        -     println!("hello");
19394        +     //println!("hello");
19395
19396              println!("world");
19397        +     //
19398        +     //
19399          }
19400        "#
19401        .unindent(),
19402    );
19403
19404    cx.set_head_text("new diff base!");
19405    executor.run_until_parked();
19406    cx.assert_state_with_diff(
19407        r#"
19408        - new diff base!
19409        + use some::mod2;
19410        +
19411        + const A: u32 = 42;
19412        + const C: u32 = 42;
19413        +
19414        + fn main(ˇ) {
19415        +     //println!("hello");
19416        +
19417        +     println!("world");
19418        +     //
19419        +     //
19420        + }
19421        "#
19422        .unindent(),
19423    );
19424}
19425
19426#[gpui::test]
19427async fn test_toggle_diff_expand_in_multi_buffer(cx: &mut TestAppContext) {
19428    init_test(cx, |_| {});
19429
19430    let file_1_old = "aaa\nbbb\nccc\nddd\neee\nfff\nggg\nhhh\niii\njjj";
19431    let file_1_new = "aaa\nccc\nddd\neee\nfff\nggg\nhhh\niii\njjj";
19432    let file_2_old = "lll\nmmm\nnnn\nooo\nppp\nqqq\nrrr\nsss\nttt\nuuu";
19433    let file_2_new = "lll\nmmm\nNNN\nooo\nppp\nqqq\nrrr\nsss\nttt\nuuu";
19434    let file_3_old = "111\n222\n333\n444\n555\n777\n888\n999\n000\n!!!";
19435    let file_3_new = "111\n222\n333\n444\n555\n666\n777\n888\n999\n000\n!!!";
19436
19437    let buffer_1 = cx.new(|cx| Buffer::local(file_1_new.to_string(), cx));
19438    let buffer_2 = cx.new(|cx| Buffer::local(file_2_new.to_string(), cx));
19439    let buffer_3 = cx.new(|cx| Buffer::local(file_3_new.to_string(), cx));
19440
19441    let multi_buffer = cx.new(|cx| {
19442        let mut multibuffer = MultiBuffer::new(ReadWrite);
19443        multibuffer.push_excerpts(
19444            buffer_1.clone(),
19445            [
19446                ExcerptRange::new(Point::new(0, 0)..Point::new(3, 0)),
19447                ExcerptRange::new(Point::new(5, 0)..Point::new(7, 0)),
19448                ExcerptRange::new(Point::new(9, 0)..Point::new(10, 3)),
19449            ],
19450            cx,
19451        );
19452        multibuffer.push_excerpts(
19453            buffer_2.clone(),
19454            [
19455                ExcerptRange::new(Point::new(0, 0)..Point::new(3, 0)),
19456                ExcerptRange::new(Point::new(5, 0)..Point::new(7, 0)),
19457                ExcerptRange::new(Point::new(9, 0)..Point::new(10, 3)),
19458            ],
19459            cx,
19460        );
19461        multibuffer.push_excerpts(
19462            buffer_3.clone(),
19463            [
19464                ExcerptRange::new(Point::new(0, 0)..Point::new(3, 0)),
19465                ExcerptRange::new(Point::new(5, 0)..Point::new(7, 0)),
19466                ExcerptRange::new(Point::new(9, 0)..Point::new(10, 3)),
19467            ],
19468            cx,
19469        );
19470        multibuffer
19471    });
19472
19473    let editor =
19474        cx.add_window(|window, cx| Editor::new(EditorMode::full(), multi_buffer, None, window, cx));
19475    editor
19476        .update(cx, |editor, _window, cx| {
19477            for (buffer, diff_base) in [
19478                (buffer_1.clone(), file_1_old),
19479                (buffer_2.clone(), file_2_old),
19480                (buffer_3.clone(), file_3_old),
19481            ] {
19482                let diff = cx.new(|cx| BufferDiff::new_with_base_text(diff_base, &buffer, cx));
19483                editor
19484                    .buffer
19485                    .update(cx, |buffer, cx| buffer.add_diff(diff, cx));
19486            }
19487        })
19488        .unwrap();
19489
19490    let mut cx = EditorTestContext::for_editor(editor, cx).await;
19491    cx.run_until_parked();
19492
19493    cx.assert_editor_state(
19494        &"
19495            ˇaaa
19496            ccc
19497            ddd
19498
19499            ggg
19500            hhh
19501
19502
19503            lll
19504            mmm
19505            NNN
19506
19507            qqq
19508            rrr
19509
19510            uuu
19511            111
19512            222
19513            333
19514
19515            666
19516            777
19517
19518            000
19519            !!!"
19520        .unindent(),
19521    );
19522
19523    cx.update_editor(|editor, window, cx| {
19524        editor.select_all(&SelectAll, window, cx);
19525        editor.toggle_selected_diff_hunks(&ToggleSelectedDiffHunks, window, cx);
19526    });
19527    cx.executor().run_until_parked();
19528
19529    cx.assert_state_with_diff(
19530        "
19531            «aaa
19532          - bbb
19533            ccc
19534            ddd
19535
19536            ggg
19537            hhh
19538
19539
19540            lll
19541            mmm
19542          - nnn
19543          + NNN
19544
19545            qqq
19546            rrr
19547
19548            uuu
19549            111
19550            222
19551            333
19552
19553          + 666
19554            777
19555
19556            000
19557            !!!ˇ»"
19558            .unindent(),
19559    );
19560}
19561
19562#[gpui::test]
19563async fn test_expand_diff_hunk_at_excerpt_boundary(cx: &mut TestAppContext) {
19564    init_test(cx, |_| {});
19565
19566    let base = "aaa\nbbb\nccc\nddd\neee\nfff\nggg\n";
19567    let text = "aaa\nBBB\nBB2\nccc\nDDD\nEEE\nfff\nggg\nhhh\niii\n";
19568
19569    let buffer = cx.new(|cx| Buffer::local(text.to_string(), cx));
19570    let multi_buffer = cx.new(|cx| {
19571        let mut multibuffer = MultiBuffer::new(ReadWrite);
19572        multibuffer.push_excerpts(
19573            buffer.clone(),
19574            [
19575                ExcerptRange::new(Point::new(0, 0)..Point::new(2, 0)),
19576                ExcerptRange::new(Point::new(4, 0)..Point::new(7, 0)),
19577                ExcerptRange::new(Point::new(9, 0)..Point::new(10, 0)),
19578            ],
19579            cx,
19580        );
19581        multibuffer
19582    });
19583
19584    let editor =
19585        cx.add_window(|window, cx| Editor::new(EditorMode::full(), multi_buffer, None, window, cx));
19586    editor
19587        .update(cx, |editor, _window, cx| {
19588            let diff = cx.new(|cx| BufferDiff::new_with_base_text(base, &buffer, cx));
19589            editor
19590                .buffer
19591                .update(cx, |buffer, cx| buffer.add_diff(diff, cx))
19592        })
19593        .unwrap();
19594
19595    let mut cx = EditorTestContext::for_editor(editor, cx).await;
19596    cx.run_until_parked();
19597
19598    cx.update_editor(|editor, window, cx| {
19599        editor.expand_all_diff_hunks(&Default::default(), window, cx)
19600    });
19601    cx.executor().run_until_parked();
19602
19603    // When the start of a hunk coincides with the start of its excerpt,
19604    // the hunk is expanded. When the start of a hunk is earlier than
19605    // the start of its excerpt, the hunk is not expanded.
19606    cx.assert_state_with_diff(
19607        "
19608            ˇaaa
19609          - bbb
19610          + BBB
19611
19612          - ddd
19613          - eee
19614          + DDD
19615          + EEE
19616            fff
19617
19618            iii
19619        "
19620        .unindent(),
19621    );
19622}
19623
19624#[gpui::test]
19625async fn test_edits_around_expanded_insertion_hunks(
19626    executor: BackgroundExecutor,
19627    cx: &mut TestAppContext,
19628) {
19629    init_test(cx, |_| {});
19630
19631    let mut cx = EditorTestContext::new(cx).await;
19632
19633    let diff_base = r#"
19634        use some::mod1;
19635        use some::mod2;
19636
19637        const A: u32 = 42;
19638
19639        fn main() {
19640            println!("hello");
19641
19642            println!("world");
19643        }
19644        "#
19645    .unindent();
19646    executor.run_until_parked();
19647    cx.set_state(
19648        &r#"
19649        use some::mod1;
19650        use some::mod2;
19651
19652        const A: u32 = 42;
19653        const B: u32 = 42;
19654        const C: u32 = 42;
19655        ˇ
19656
19657        fn main() {
19658            println!("hello");
19659
19660            println!("world");
19661        }
19662        "#
19663        .unindent(),
19664    );
19665
19666    cx.set_head_text(&diff_base);
19667    executor.run_until_parked();
19668
19669    cx.update_editor(|editor, window, cx| {
19670        editor.expand_all_diff_hunks(&ExpandAllDiffHunks, window, cx);
19671    });
19672    executor.run_until_parked();
19673
19674    cx.assert_state_with_diff(
19675        r#"
19676        use some::mod1;
19677        use some::mod2;
19678
19679        const A: u32 = 42;
19680      + const B: u32 = 42;
19681      + const C: u32 = 42;
19682      + ˇ
19683
19684        fn main() {
19685            println!("hello");
19686
19687            println!("world");
19688        }
19689      "#
19690        .unindent(),
19691    );
19692
19693    cx.update_editor(|editor, window, cx| editor.handle_input("const D: u32 = 42;\n", window, cx));
19694    executor.run_until_parked();
19695
19696    cx.assert_state_with_diff(
19697        r#"
19698        use some::mod1;
19699        use some::mod2;
19700
19701        const A: u32 = 42;
19702      + const B: u32 = 42;
19703      + const C: u32 = 42;
19704      + const D: u32 = 42;
19705      + ˇ
19706
19707        fn main() {
19708            println!("hello");
19709
19710            println!("world");
19711        }
19712      "#
19713        .unindent(),
19714    );
19715
19716    cx.update_editor(|editor, window, cx| editor.handle_input("const E: u32 = 42;\n", window, cx));
19717    executor.run_until_parked();
19718
19719    cx.assert_state_with_diff(
19720        r#"
19721        use some::mod1;
19722        use some::mod2;
19723
19724        const A: u32 = 42;
19725      + const B: u32 = 42;
19726      + const C: u32 = 42;
19727      + const D: u32 = 42;
19728      + const E: u32 = 42;
19729      + ˇ
19730
19731        fn main() {
19732            println!("hello");
19733
19734            println!("world");
19735        }
19736      "#
19737        .unindent(),
19738    );
19739
19740    cx.update_editor(|editor, window, cx| {
19741        editor.delete_line(&DeleteLine, window, cx);
19742    });
19743    executor.run_until_parked();
19744
19745    cx.assert_state_with_diff(
19746        r#"
19747        use some::mod1;
19748        use some::mod2;
19749
19750        const A: u32 = 42;
19751      + const B: u32 = 42;
19752      + const C: u32 = 42;
19753      + const D: u32 = 42;
19754      + const E: u32 = 42;
19755        ˇ
19756        fn main() {
19757            println!("hello");
19758
19759            println!("world");
19760        }
19761      "#
19762        .unindent(),
19763    );
19764
19765    cx.update_editor(|editor, window, cx| {
19766        editor.move_up(&MoveUp, window, cx);
19767        editor.delete_line(&DeleteLine, window, cx);
19768        editor.move_up(&MoveUp, window, cx);
19769        editor.delete_line(&DeleteLine, window, cx);
19770        editor.move_up(&MoveUp, window, cx);
19771        editor.delete_line(&DeleteLine, window, cx);
19772    });
19773    executor.run_until_parked();
19774    cx.assert_state_with_diff(
19775        r#"
19776        use some::mod1;
19777        use some::mod2;
19778
19779        const A: u32 = 42;
19780      + const B: u32 = 42;
19781        ˇ
19782        fn main() {
19783            println!("hello");
19784
19785            println!("world");
19786        }
19787      "#
19788        .unindent(),
19789    );
19790
19791    cx.update_editor(|editor, window, cx| {
19792        editor.select_up_by_lines(&SelectUpByLines { lines: 5 }, window, cx);
19793        editor.delete_line(&DeleteLine, window, cx);
19794    });
19795    executor.run_until_parked();
19796    cx.assert_state_with_diff(
19797        r#"
19798        ˇ
19799        fn main() {
19800            println!("hello");
19801
19802            println!("world");
19803        }
19804      "#
19805        .unindent(),
19806    );
19807}
19808
19809#[gpui::test]
19810async fn test_toggling_adjacent_diff_hunks(cx: &mut TestAppContext) {
19811    init_test(cx, |_| {});
19812
19813    let mut cx = EditorTestContext::new(cx).await;
19814    cx.set_head_text(indoc! { "
19815        one
19816        two
19817        three
19818        four
19819        five
19820        "
19821    });
19822    cx.set_state(indoc! { "
19823        one
19824        ˇthree
19825        five
19826    "});
19827    cx.run_until_parked();
19828    cx.update_editor(|editor, window, cx| {
19829        editor.toggle_selected_diff_hunks(&Default::default(), window, cx);
19830    });
19831    cx.assert_state_with_diff(
19832        indoc! { "
19833        one
19834      - two
19835        ˇthree
19836      - four
19837        five
19838    "}
19839        .to_string(),
19840    );
19841    cx.update_editor(|editor, window, cx| {
19842        editor.toggle_selected_diff_hunks(&Default::default(), window, cx);
19843    });
19844
19845    cx.assert_state_with_diff(
19846        indoc! { "
19847        one
19848        ˇthree
19849        five
19850    "}
19851        .to_string(),
19852    );
19853
19854    cx.set_state(indoc! { "
19855        one
19856        ˇTWO
19857        three
19858        four
19859        five
19860    "});
19861    cx.run_until_parked();
19862    cx.update_editor(|editor, window, cx| {
19863        editor.toggle_selected_diff_hunks(&Default::default(), window, cx);
19864    });
19865
19866    cx.assert_state_with_diff(
19867        indoc! { "
19868            one
19869          - two
19870          + ˇTWO
19871            three
19872            four
19873            five
19874        "}
19875        .to_string(),
19876    );
19877    cx.update_editor(|editor, window, cx| {
19878        editor.move_up(&Default::default(), window, cx);
19879        editor.toggle_selected_diff_hunks(&Default::default(), window, cx);
19880    });
19881    cx.assert_state_with_diff(
19882        indoc! { "
19883            one
19884            ˇTWO
19885            three
19886            four
19887            five
19888        "}
19889        .to_string(),
19890    );
19891}
19892
19893#[gpui::test]
19894async fn test_edits_around_expanded_deletion_hunks(
19895    executor: BackgroundExecutor,
19896    cx: &mut TestAppContext,
19897) {
19898    init_test(cx, |_| {});
19899
19900    let mut cx = EditorTestContext::new(cx).await;
19901
19902    let diff_base = r#"
19903        use some::mod1;
19904        use some::mod2;
19905
19906        const A: u32 = 42;
19907        const B: u32 = 42;
19908        const C: u32 = 42;
19909
19910
19911        fn main() {
19912            println!("hello");
19913
19914            println!("world");
19915        }
19916    "#
19917    .unindent();
19918    executor.run_until_parked();
19919    cx.set_state(
19920        &r#"
19921        use some::mod1;
19922        use some::mod2;
19923
19924        ˇconst B: u32 = 42;
19925        const C: u32 = 42;
19926
19927
19928        fn main() {
19929            println!("hello");
19930
19931            println!("world");
19932        }
19933        "#
19934        .unindent(),
19935    );
19936
19937    cx.set_head_text(&diff_base);
19938    executor.run_until_parked();
19939
19940    cx.update_editor(|editor, window, cx| {
19941        editor.expand_all_diff_hunks(&ExpandAllDiffHunks, window, cx);
19942    });
19943    executor.run_until_parked();
19944
19945    cx.assert_state_with_diff(
19946        r#"
19947        use some::mod1;
19948        use some::mod2;
19949
19950      - const A: u32 = 42;
19951        ˇconst B: u32 = 42;
19952        const C: u32 = 42;
19953
19954
19955        fn main() {
19956            println!("hello");
19957
19958            println!("world");
19959        }
19960      "#
19961        .unindent(),
19962    );
19963
19964    cx.update_editor(|editor, window, cx| {
19965        editor.delete_line(&DeleteLine, window, cx);
19966    });
19967    executor.run_until_parked();
19968    cx.assert_state_with_diff(
19969        r#"
19970        use some::mod1;
19971        use some::mod2;
19972
19973      - const A: u32 = 42;
19974      - const B: u32 = 42;
19975        ˇconst C: u32 = 42;
19976
19977
19978        fn main() {
19979            println!("hello");
19980
19981            println!("world");
19982        }
19983      "#
19984        .unindent(),
19985    );
19986
19987    cx.update_editor(|editor, window, cx| {
19988        editor.delete_line(&DeleteLine, window, cx);
19989    });
19990    executor.run_until_parked();
19991    cx.assert_state_with_diff(
19992        r#"
19993        use some::mod1;
19994        use some::mod2;
19995
19996      - const A: u32 = 42;
19997      - const B: u32 = 42;
19998      - const C: u32 = 42;
19999        ˇ
20000
20001        fn main() {
20002            println!("hello");
20003
20004            println!("world");
20005        }
20006      "#
20007        .unindent(),
20008    );
20009
20010    cx.update_editor(|editor, window, cx| {
20011        editor.handle_input("replacement", window, cx);
20012    });
20013    executor.run_until_parked();
20014    cx.assert_state_with_diff(
20015        r#"
20016        use some::mod1;
20017        use some::mod2;
20018
20019      - const A: u32 = 42;
20020      - const B: u32 = 42;
20021      - const C: u32 = 42;
20022      -
20023      + replacementˇ
20024
20025        fn main() {
20026            println!("hello");
20027
20028            println!("world");
20029        }
20030      "#
20031        .unindent(),
20032    );
20033}
20034
20035#[gpui::test]
20036async fn test_backspace_after_deletion_hunk(executor: BackgroundExecutor, cx: &mut TestAppContext) {
20037    init_test(cx, |_| {});
20038
20039    let mut cx = EditorTestContext::new(cx).await;
20040
20041    let base_text = r#"
20042        one
20043        two
20044        three
20045        four
20046        five
20047    "#
20048    .unindent();
20049    executor.run_until_parked();
20050    cx.set_state(
20051        &r#"
20052        one
20053        two
20054        fˇour
20055        five
20056        "#
20057        .unindent(),
20058    );
20059
20060    cx.set_head_text(&base_text);
20061    executor.run_until_parked();
20062
20063    cx.update_editor(|editor, window, cx| {
20064        editor.expand_all_diff_hunks(&ExpandAllDiffHunks, window, cx);
20065    });
20066    executor.run_until_parked();
20067
20068    cx.assert_state_with_diff(
20069        r#"
20070          one
20071          two
20072        - three
20073          fˇour
20074          five
20075        "#
20076        .unindent(),
20077    );
20078
20079    cx.update_editor(|editor, window, cx| {
20080        editor.backspace(&Backspace, window, cx);
20081        editor.backspace(&Backspace, window, cx);
20082    });
20083    executor.run_until_parked();
20084    cx.assert_state_with_diff(
20085        r#"
20086          one
20087          two
20088        - threeˇ
20089        - four
20090        + our
20091          five
20092        "#
20093        .unindent(),
20094    );
20095}
20096
20097#[gpui::test]
20098async fn test_edit_after_expanded_modification_hunk(
20099    executor: BackgroundExecutor,
20100    cx: &mut TestAppContext,
20101) {
20102    init_test(cx, |_| {});
20103
20104    let mut cx = EditorTestContext::new(cx).await;
20105
20106    let diff_base = r#"
20107        use some::mod1;
20108        use some::mod2;
20109
20110        const A: u32 = 42;
20111        const B: u32 = 42;
20112        const C: u32 = 42;
20113        const D: u32 = 42;
20114
20115
20116        fn main() {
20117            println!("hello");
20118
20119            println!("world");
20120        }"#
20121    .unindent();
20122
20123    cx.set_state(
20124        &r#"
20125        use some::mod1;
20126        use some::mod2;
20127
20128        const A: u32 = 42;
20129        const B: u32 = 42;
20130        const C: u32 = 43ˇ
20131        const D: u32 = 42;
20132
20133
20134        fn main() {
20135            println!("hello");
20136
20137            println!("world");
20138        }"#
20139        .unindent(),
20140    );
20141
20142    cx.set_head_text(&diff_base);
20143    executor.run_until_parked();
20144    cx.update_editor(|editor, window, cx| {
20145        editor.expand_all_diff_hunks(&ExpandAllDiffHunks, window, cx);
20146    });
20147    executor.run_until_parked();
20148
20149    cx.assert_state_with_diff(
20150        r#"
20151        use some::mod1;
20152        use some::mod2;
20153
20154        const A: u32 = 42;
20155        const B: u32 = 42;
20156      - const C: u32 = 42;
20157      + const C: u32 = 43ˇ
20158        const D: u32 = 42;
20159
20160
20161        fn main() {
20162            println!("hello");
20163
20164            println!("world");
20165        }"#
20166        .unindent(),
20167    );
20168
20169    cx.update_editor(|editor, window, cx| {
20170        editor.handle_input("\nnew_line\n", window, cx);
20171    });
20172    executor.run_until_parked();
20173
20174    cx.assert_state_with_diff(
20175        r#"
20176        use some::mod1;
20177        use some::mod2;
20178
20179        const A: u32 = 42;
20180        const B: u32 = 42;
20181      - const C: u32 = 42;
20182      + const C: u32 = 43
20183      + new_line
20184      + ˇ
20185        const D: u32 = 42;
20186
20187
20188        fn main() {
20189            println!("hello");
20190
20191            println!("world");
20192        }"#
20193        .unindent(),
20194    );
20195}
20196
20197#[gpui::test]
20198async fn test_stage_and_unstage_added_file_hunk(
20199    executor: BackgroundExecutor,
20200    cx: &mut TestAppContext,
20201) {
20202    init_test(cx, |_| {});
20203
20204    let mut cx = EditorTestContext::new(cx).await;
20205    cx.update_editor(|editor, _, cx| {
20206        editor.set_expand_all_diff_hunks(cx);
20207    });
20208
20209    let working_copy = r#"
20210            ˇfn main() {
20211                println!("hello, world!");
20212            }
20213        "#
20214    .unindent();
20215
20216    cx.set_state(&working_copy);
20217    executor.run_until_parked();
20218
20219    cx.assert_state_with_diff(
20220        r#"
20221            + ˇfn main() {
20222            +     println!("hello, world!");
20223            + }
20224        "#
20225        .unindent(),
20226    );
20227    cx.assert_index_text(None);
20228
20229    cx.update_editor(|editor, window, cx| {
20230        editor.toggle_staged_selected_diff_hunks(&Default::default(), window, cx);
20231    });
20232    executor.run_until_parked();
20233    cx.assert_index_text(Some(&working_copy.replace("ˇ", "")));
20234    cx.assert_state_with_diff(
20235        r#"
20236            + ˇfn main() {
20237            +     println!("hello, world!");
20238            + }
20239        "#
20240        .unindent(),
20241    );
20242
20243    cx.update_editor(|editor, window, cx| {
20244        editor.toggle_staged_selected_diff_hunks(&Default::default(), window, cx);
20245    });
20246    executor.run_until_parked();
20247    cx.assert_index_text(None);
20248}
20249
20250async fn setup_indent_guides_editor(
20251    text: &str,
20252    cx: &mut TestAppContext,
20253) -> (BufferId, EditorTestContext) {
20254    init_test(cx, |_| {});
20255
20256    let mut cx = EditorTestContext::new(cx).await;
20257
20258    let buffer_id = cx.update_editor(|editor, window, cx| {
20259        editor.set_text(text, window, cx);
20260        let buffer_ids = editor.buffer().read(cx).excerpt_buffer_ids();
20261
20262        buffer_ids[0]
20263    });
20264
20265    (buffer_id, cx)
20266}
20267
20268fn assert_indent_guides(
20269    range: Range<u32>,
20270    expected: Vec<IndentGuide>,
20271    active_indices: Option<Vec<usize>>,
20272    cx: &mut EditorTestContext,
20273) {
20274    let indent_guides = cx.update_editor(|editor, window, cx| {
20275        let snapshot = editor.snapshot(window, cx).display_snapshot;
20276        let mut indent_guides: Vec<_> = crate::indent_guides::indent_guides_in_range(
20277            editor,
20278            MultiBufferRow(range.start)..MultiBufferRow(range.end),
20279            true,
20280            &snapshot,
20281            cx,
20282        );
20283
20284        indent_guides.sort_by(|a, b| {
20285            a.depth.cmp(&b.depth).then(
20286                a.start_row
20287                    .cmp(&b.start_row)
20288                    .then(a.end_row.cmp(&b.end_row)),
20289            )
20290        });
20291        indent_guides
20292    });
20293
20294    if let Some(expected) = active_indices {
20295        let active_indices = cx.update_editor(|editor, window, cx| {
20296            let snapshot = editor.snapshot(window, cx).display_snapshot;
20297            editor.find_active_indent_guide_indices(&indent_guides, &snapshot, window, cx)
20298        });
20299
20300        assert_eq!(
20301            active_indices.unwrap().into_iter().collect::<Vec<_>>(),
20302            expected,
20303            "Active indent guide indices do not match"
20304        );
20305    }
20306
20307    assert_eq!(indent_guides, expected, "Indent guides do not match");
20308}
20309
20310fn indent_guide(buffer_id: BufferId, start_row: u32, end_row: u32, depth: u32) -> IndentGuide {
20311    IndentGuide {
20312        buffer_id,
20313        start_row: MultiBufferRow(start_row),
20314        end_row: MultiBufferRow(end_row),
20315        depth,
20316        tab_size: 4,
20317        settings: IndentGuideSettings {
20318            enabled: true,
20319            line_width: 1,
20320            active_line_width: 1,
20321            coloring: IndentGuideColoring::default(),
20322            background_coloring: IndentGuideBackgroundColoring::default(),
20323        },
20324    }
20325}
20326
20327#[gpui::test]
20328async fn test_indent_guide_single_line(cx: &mut TestAppContext) {
20329    let (buffer_id, mut cx) = setup_indent_guides_editor(
20330        &"
20331        fn main() {
20332            let a = 1;
20333        }"
20334        .unindent(),
20335        cx,
20336    )
20337    .await;
20338
20339    assert_indent_guides(0..3, vec![indent_guide(buffer_id, 1, 1, 0)], None, &mut cx);
20340}
20341
20342#[gpui::test]
20343async fn test_indent_guide_simple_block(cx: &mut TestAppContext) {
20344    let (buffer_id, mut cx) = setup_indent_guides_editor(
20345        &"
20346        fn main() {
20347            let a = 1;
20348            let b = 2;
20349        }"
20350        .unindent(),
20351        cx,
20352    )
20353    .await;
20354
20355    assert_indent_guides(0..4, vec![indent_guide(buffer_id, 1, 2, 0)], None, &mut cx);
20356}
20357
20358#[gpui::test]
20359async fn test_indent_guide_nested(cx: &mut TestAppContext) {
20360    let (buffer_id, mut cx) = setup_indent_guides_editor(
20361        &"
20362        fn main() {
20363            let a = 1;
20364            if a == 3 {
20365                let b = 2;
20366            } else {
20367                let c = 3;
20368            }
20369        }"
20370        .unindent(),
20371        cx,
20372    )
20373    .await;
20374
20375    assert_indent_guides(
20376        0..8,
20377        vec![
20378            indent_guide(buffer_id, 1, 6, 0),
20379            indent_guide(buffer_id, 3, 3, 1),
20380            indent_guide(buffer_id, 5, 5, 1),
20381        ],
20382        None,
20383        &mut cx,
20384    );
20385}
20386
20387#[gpui::test]
20388async fn test_indent_guide_tab(cx: &mut TestAppContext) {
20389    let (buffer_id, mut cx) = setup_indent_guides_editor(
20390        &"
20391        fn main() {
20392            let a = 1;
20393                let b = 2;
20394            let c = 3;
20395        }"
20396        .unindent(),
20397        cx,
20398    )
20399    .await;
20400
20401    assert_indent_guides(
20402        0..5,
20403        vec![
20404            indent_guide(buffer_id, 1, 3, 0),
20405            indent_guide(buffer_id, 2, 2, 1),
20406        ],
20407        None,
20408        &mut cx,
20409    );
20410}
20411
20412#[gpui::test]
20413async fn test_indent_guide_continues_on_empty_line(cx: &mut TestAppContext) {
20414    let (buffer_id, mut cx) = setup_indent_guides_editor(
20415        &"
20416        fn main() {
20417            let a = 1;
20418
20419            let c = 3;
20420        }"
20421        .unindent(),
20422        cx,
20423    )
20424    .await;
20425
20426    assert_indent_guides(0..5, vec![indent_guide(buffer_id, 1, 3, 0)], None, &mut cx);
20427}
20428
20429#[gpui::test]
20430async fn test_indent_guide_complex(cx: &mut TestAppContext) {
20431    let (buffer_id, mut cx) = setup_indent_guides_editor(
20432        &"
20433        fn main() {
20434            let a = 1;
20435
20436            let c = 3;
20437
20438            if a == 3 {
20439                let b = 2;
20440            } else {
20441                let c = 3;
20442            }
20443        }"
20444        .unindent(),
20445        cx,
20446    )
20447    .await;
20448
20449    assert_indent_guides(
20450        0..11,
20451        vec![
20452            indent_guide(buffer_id, 1, 9, 0),
20453            indent_guide(buffer_id, 6, 6, 1),
20454            indent_guide(buffer_id, 8, 8, 1),
20455        ],
20456        None,
20457        &mut cx,
20458    );
20459}
20460
20461#[gpui::test]
20462async fn test_indent_guide_starts_off_screen(cx: &mut TestAppContext) {
20463    let (buffer_id, mut cx) = setup_indent_guides_editor(
20464        &"
20465        fn main() {
20466            let a = 1;
20467
20468            let c = 3;
20469
20470            if a == 3 {
20471                let b = 2;
20472            } else {
20473                let c = 3;
20474            }
20475        }"
20476        .unindent(),
20477        cx,
20478    )
20479    .await;
20480
20481    assert_indent_guides(
20482        1..11,
20483        vec![
20484            indent_guide(buffer_id, 1, 9, 0),
20485            indent_guide(buffer_id, 6, 6, 1),
20486            indent_guide(buffer_id, 8, 8, 1),
20487        ],
20488        None,
20489        &mut cx,
20490    );
20491}
20492
20493#[gpui::test]
20494async fn test_indent_guide_ends_off_screen(cx: &mut TestAppContext) {
20495    let (buffer_id, mut cx) = setup_indent_guides_editor(
20496        &"
20497        fn main() {
20498            let a = 1;
20499
20500            let c = 3;
20501
20502            if a == 3 {
20503                let b = 2;
20504            } else {
20505                let c = 3;
20506            }
20507        }"
20508        .unindent(),
20509        cx,
20510    )
20511    .await;
20512
20513    assert_indent_guides(
20514        1..10,
20515        vec![
20516            indent_guide(buffer_id, 1, 9, 0),
20517            indent_guide(buffer_id, 6, 6, 1),
20518            indent_guide(buffer_id, 8, 8, 1),
20519        ],
20520        None,
20521        &mut cx,
20522    );
20523}
20524
20525#[gpui::test]
20526async fn test_indent_guide_with_folds(cx: &mut TestAppContext) {
20527    let (buffer_id, mut cx) = setup_indent_guides_editor(
20528        &"
20529        fn main() {
20530            if a {
20531                b(
20532                    c,
20533                    d,
20534                )
20535            } else {
20536                e(
20537                    f
20538                )
20539            }
20540        }"
20541        .unindent(),
20542        cx,
20543    )
20544    .await;
20545
20546    assert_indent_guides(
20547        0..11,
20548        vec![
20549            indent_guide(buffer_id, 1, 10, 0),
20550            indent_guide(buffer_id, 2, 5, 1),
20551            indent_guide(buffer_id, 7, 9, 1),
20552            indent_guide(buffer_id, 3, 4, 2),
20553            indent_guide(buffer_id, 8, 8, 2),
20554        ],
20555        None,
20556        &mut cx,
20557    );
20558
20559    cx.update_editor(|editor, window, cx| {
20560        editor.fold_at(MultiBufferRow(2), window, cx);
20561        assert_eq!(
20562            editor.display_text(cx),
20563            "
20564            fn main() {
20565                if a {
20566                    b(⋯
20567                    )
20568                } else {
20569                    e(
20570                        f
20571                    )
20572                }
20573            }"
20574            .unindent()
20575        );
20576    });
20577
20578    assert_indent_guides(
20579        0..11,
20580        vec![
20581            indent_guide(buffer_id, 1, 10, 0),
20582            indent_guide(buffer_id, 2, 5, 1),
20583            indent_guide(buffer_id, 7, 9, 1),
20584            indent_guide(buffer_id, 8, 8, 2),
20585        ],
20586        None,
20587        &mut cx,
20588    );
20589}
20590
20591#[gpui::test]
20592async fn test_indent_guide_without_brackets(cx: &mut TestAppContext) {
20593    let (buffer_id, mut cx) = setup_indent_guides_editor(
20594        &"
20595        block1
20596            block2
20597                block3
20598                    block4
20599            block2
20600        block1
20601        block1"
20602            .unindent(),
20603        cx,
20604    )
20605    .await;
20606
20607    assert_indent_guides(
20608        1..10,
20609        vec![
20610            indent_guide(buffer_id, 1, 4, 0),
20611            indent_guide(buffer_id, 2, 3, 1),
20612            indent_guide(buffer_id, 3, 3, 2),
20613        ],
20614        None,
20615        &mut cx,
20616    );
20617}
20618
20619#[gpui::test]
20620async fn test_indent_guide_ends_before_empty_line(cx: &mut TestAppContext) {
20621    let (buffer_id, mut cx) = setup_indent_guides_editor(
20622        &"
20623        block1
20624            block2
20625                block3
20626
20627        block1
20628        block1"
20629            .unindent(),
20630        cx,
20631    )
20632    .await;
20633
20634    assert_indent_guides(
20635        0..6,
20636        vec![
20637            indent_guide(buffer_id, 1, 2, 0),
20638            indent_guide(buffer_id, 2, 2, 1),
20639        ],
20640        None,
20641        &mut cx,
20642    );
20643}
20644
20645#[gpui::test]
20646async fn test_indent_guide_ignored_only_whitespace_lines(cx: &mut TestAppContext) {
20647    let (buffer_id, mut cx) = setup_indent_guides_editor(
20648        &"
20649        function component() {
20650        \treturn (
20651        \t\t\t
20652        \t\t<div>
20653        \t\t\t<abc></abc>
20654        \t\t</div>
20655        \t)
20656        }"
20657        .unindent(),
20658        cx,
20659    )
20660    .await;
20661
20662    assert_indent_guides(
20663        0..8,
20664        vec![
20665            indent_guide(buffer_id, 1, 6, 0),
20666            indent_guide(buffer_id, 2, 5, 1),
20667            indent_guide(buffer_id, 4, 4, 2),
20668        ],
20669        None,
20670        &mut cx,
20671    );
20672}
20673
20674#[gpui::test]
20675async fn test_indent_guide_fallback_to_next_non_entirely_whitespace_line(cx: &mut TestAppContext) {
20676    let (buffer_id, mut cx) = setup_indent_guides_editor(
20677        &"
20678        function component() {
20679        \treturn (
20680        \t
20681        \t\t<div>
20682        \t\t\t<abc></abc>
20683        \t\t</div>
20684        \t)
20685        }"
20686        .unindent(),
20687        cx,
20688    )
20689    .await;
20690
20691    assert_indent_guides(
20692        0..8,
20693        vec![
20694            indent_guide(buffer_id, 1, 6, 0),
20695            indent_guide(buffer_id, 2, 5, 1),
20696            indent_guide(buffer_id, 4, 4, 2),
20697        ],
20698        None,
20699        &mut cx,
20700    );
20701}
20702
20703#[gpui::test]
20704async fn test_indent_guide_continuing_off_screen(cx: &mut TestAppContext) {
20705    let (buffer_id, mut cx) = setup_indent_guides_editor(
20706        &"
20707        block1
20708
20709
20710
20711            block2
20712        "
20713        .unindent(),
20714        cx,
20715    )
20716    .await;
20717
20718    assert_indent_guides(0..1, vec![indent_guide(buffer_id, 1, 1, 0)], None, &mut cx);
20719}
20720
20721#[gpui::test]
20722async fn test_indent_guide_tabs(cx: &mut TestAppContext) {
20723    let (buffer_id, mut cx) = setup_indent_guides_editor(
20724        &"
20725        def a:
20726        \tb = 3
20727        \tif True:
20728        \t\tc = 4
20729        \t\td = 5
20730        \tprint(b)
20731        "
20732        .unindent(),
20733        cx,
20734    )
20735    .await;
20736
20737    assert_indent_guides(
20738        0..6,
20739        vec![
20740            indent_guide(buffer_id, 1, 5, 0),
20741            indent_guide(buffer_id, 3, 4, 1),
20742        ],
20743        None,
20744        &mut cx,
20745    );
20746}
20747
20748#[gpui::test]
20749async fn test_active_indent_guide_single_line(cx: &mut TestAppContext) {
20750    let (buffer_id, mut cx) = setup_indent_guides_editor(
20751        &"
20752    fn main() {
20753        let a = 1;
20754    }"
20755        .unindent(),
20756        cx,
20757    )
20758    .await;
20759
20760    cx.update_editor(|editor, window, cx| {
20761        editor.change_selections(SelectionEffects::no_scroll(), window, cx, |s| {
20762            s.select_ranges([Point::new(1, 0)..Point::new(1, 0)])
20763        });
20764    });
20765
20766    assert_indent_guides(
20767        0..3,
20768        vec![indent_guide(buffer_id, 1, 1, 0)],
20769        Some(vec![0]),
20770        &mut cx,
20771    );
20772}
20773
20774#[gpui::test]
20775async fn test_active_indent_guide_respect_indented_range(cx: &mut TestAppContext) {
20776    let (buffer_id, mut cx) = setup_indent_guides_editor(
20777        &"
20778    fn main() {
20779        if 1 == 2 {
20780            let a = 1;
20781        }
20782    }"
20783        .unindent(),
20784        cx,
20785    )
20786    .await;
20787
20788    cx.update_editor(|editor, window, cx| {
20789        editor.change_selections(SelectionEffects::no_scroll(), window, cx, |s| {
20790            s.select_ranges([Point::new(1, 0)..Point::new(1, 0)])
20791        });
20792    });
20793
20794    assert_indent_guides(
20795        0..4,
20796        vec![
20797            indent_guide(buffer_id, 1, 3, 0),
20798            indent_guide(buffer_id, 2, 2, 1),
20799        ],
20800        Some(vec![1]),
20801        &mut cx,
20802    );
20803
20804    cx.update_editor(|editor, window, cx| {
20805        editor.change_selections(SelectionEffects::no_scroll(), window, cx, |s| {
20806            s.select_ranges([Point::new(2, 0)..Point::new(2, 0)])
20807        });
20808    });
20809
20810    assert_indent_guides(
20811        0..4,
20812        vec![
20813            indent_guide(buffer_id, 1, 3, 0),
20814            indent_guide(buffer_id, 2, 2, 1),
20815        ],
20816        Some(vec![1]),
20817        &mut cx,
20818    );
20819
20820    cx.update_editor(|editor, window, cx| {
20821        editor.change_selections(SelectionEffects::no_scroll(), window, cx, |s| {
20822            s.select_ranges([Point::new(3, 0)..Point::new(3, 0)])
20823        });
20824    });
20825
20826    assert_indent_guides(
20827        0..4,
20828        vec![
20829            indent_guide(buffer_id, 1, 3, 0),
20830            indent_guide(buffer_id, 2, 2, 1),
20831        ],
20832        Some(vec![0]),
20833        &mut cx,
20834    );
20835}
20836
20837#[gpui::test]
20838async fn test_active_indent_guide_empty_line(cx: &mut TestAppContext) {
20839    let (buffer_id, mut cx) = setup_indent_guides_editor(
20840        &"
20841    fn main() {
20842        let a = 1;
20843
20844        let b = 2;
20845    }"
20846        .unindent(),
20847        cx,
20848    )
20849    .await;
20850
20851    cx.update_editor(|editor, window, cx| {
20852        editor.change_selections(SelectionEffects::no_scroll(), window, cx, |s| {
20853            s.select_ranges([Point::new(2, 0)..Point::new(2, 0)])
20854        });
20855    });
20856
20857    assert_indent_guides(
20858        0..5,
20859        vec![indent_guide(buffer_id, 1, 3, 0)],
20860        Some(vec![0]),
20861        &mut cx,
20862    );
20863}
20864
20865#[gpui::test]
20866async fn test_active_indent_guide_non_matching_indent(cx: &mut TestAppContext) {
20867    let (buffer_id, mut cx) = setup_indent_guides_editor(
20868        &"
20869    def m:
20870        a = 1
20871        pass"
20872            .unindent(),
20873        cx,
20874    )
20875    .await;
20876
20877    cx.update_editor(|editor, window, cx| {
20878        editor.change_selections(SelectionEffects::no_scroll(), window, cx, |s| {
20879            s.select_ranges([Point::new(1, 0)..Point::new(1, 0)])
20880        });
20881    });
20882
20883    assert_indent_guides(
20884        0..3,
20885        vec![indent_guide(buffer_id, 1, 2, 0)],
20886        Some(vec![0]),
20887        &mut cx,
20888    );
20889}
20890
20891#[gpui::test]
20892async fn test_indent_guide_with_expanded_diff_hunks(cx: &mut TestAppContext) {
20893    init_test(cx, |_| {});
20894    let mut cx = EditorTestContext::new(cx).await;
20895    let text = indoc! {
20896        "
20897        impl A {
20898            fn b() {
20899                0;
20900                3;
20901                5;
20902                6;
20903                7;
20904            }
20905        }
20906        "
20907    };
20908    let base_text = indoc! {
20909        "
20910        impl A {
20911            fn b() {
20912                0;
20913                1;
20914                2;
20915                3;
20916                4;
20917            }
20918            fn c() {
20919                5;
20920                6;
20921                7;
20922            }
20923        }
20924        "
20925    };
20926
20927    cx.update_editor(|editor, window, cx| {
20928        editor.set_text(text, window, cx);
20929
20930        editor.buffer().update(cx, |multibuffer, cx| {
20931            let buffer = multibuffer.as_singleton().unwrap();
20932            let diff = cx.new(|cx| BufferDiff::new_with_base_text(base_text, &buffer, cx));
20933
20934            multibuffer.set_all_diff_hunks_expanded(cx);
20935            multibuffer.add_diff(diff, cx);
20936
20937            buffer.read(cx).remote_id()
20938        })
20939    });
20940    cx.run_until_parked();
20941
20942    cx.assert_state_with_diff(
20943        indoc! { "
20944          impl A {
20945              fn b() {
20946                  0;
20947        -         1;
20948        -         2;
20949                  3;
20950        -         4;
20951        -     }
20952        -     fn c() {
20953                  5;
20954                  6;
20955                  7;
20956              }
20957          }
20958          ˇ"
20959        }
20960        .to_string(),
20961    );
20962
20963    let mut actual_guides = cx.update_editor(|editor, window, cx| {
20964        editor
20965            .snapshot(window, cx)
20966            .buffer_snapshot()
20967            .indent_guides_in_range(Anchor::min()..Anchor::max(), false, cx)
20968            .map(|guide| (guide.start_row..=guide.end_row, guide.depth))
20969            .collect::<Vec<_>>()
20970    });
20971    actual_guides.sort_by_key(|item| (*item.0.start(), item.1));
20972    assert_eq!(
20973        actual_guides,
20974        vec![
20975            (MultiBufferRow(1)..=MultiBufferRow(12), 0),
20976            (MultiBufferRow(2)..=MultiBufferRow(6), 1),
20977            (MultiBufferRow(9)..=MultiBufferRow(11), 1),
20978        ]
20979    );
20980}
20981
20982#[gpui::test]
20983async fn test_adjacent_diff_hunks(executor: BackgroundExecutor, cx: &mut TestAppContext) {
20984    init_test(cx, |_| {});
20985    let mut cx = EditorTestContext::new(cx).await;
20986
20987    let diff_base = r#"
20988        a
20989        b
20990        c
20991        "#
20992    .unindent();
20993
20994    cx.set_state(
20995        &r#"
20996        ˇA
20997        b
20998        C
20999        "#
21000        .unindent(),
21001    );
21002    cx.set_head_text(&diff_base);
21003    cx.update_editor(|editor, window, cx| {
21004        editor.expand_all_diff_hunks(&ExpandAllDiffHunks, window, cx);
21005    });
21006    executor.run_until_parked();
21007
21008    let both_hunks_expanded = r#"
21009        - a
21010        + ˇA
21011          b
21012        - c
21013        + C
21014        "#
21015    .unindent();
21016
21017    cx.assert_state_with_diff(both_hunks_expanded.clone());
21018
21019    let hunk_ranges = cx.update_editor(|editor, window, cx| {
21020        let snapshot = editor.snapshot(window, cx);
21021        let hunks = editor
21022            .diff_hunks_in_ranges(&[Anchor::min()..Anchor::max()], &snapshot.buffer_snapshot())
21023            .collect::<Vec<_>>();
21024        let excerpt_id = editor.buffer.read(cx).excerpt_ids()[0];
21025        let buffer_id = hunks[0].buffer_id;
21026        hunks
21027            .into_iter()
21028            .map(|hunk| Anchor::range_in_buffer(excerpt_id, buffer_id, hunk.buffer_range))
21029            .collect::<Vec<_>>()
21030    });
21031    assert_eq!(hunk_ranges.len(), 2);
21032
21033    cx.update_editor(|editor, _, cx| {
21034        editor.toggle_single_diff_hunk(hunk_ranges[0].clone(), cx);
21035    });
21036    executor.run_until_parked();
21037
21038    let second_hunk_expanded = r#"
21039          ˇA
21040          b
21041        - c
21042        + C
21043        "#
21044    .unindent();
21045
21046    cx.assert_state_with_diff(second_hunk_expanded);
21047
21048    cx.update_editor(|editor, _, cx| {
21049        editor.toggle_single_diff_hunk(hunk_ranges[0].clone(), cx);
21050    });
21051    executor.run_until_parked();
21052
21053    cx.assert_state_with_diff(both_hunks_expanded.clone());
21054
21055    cx.update_editor(|editor, _, cx| {
21056        editor.toggle_single_diff_hunk(hunk_ranges[1].clone(), cx);
21057    });
21058    executor.run_until_parked();
21059
21060    let first_hunk_expanded = r#"
21061        - a
21062        + ˇA
21063          b
21064          C
21065        "#
21066    .unindent();
21067
21068    cx.assert_state_with_diff(first_hunk_expanded);
21069
21070    cx.update_editor(|editor, _, cx| {
21071        editor.toggle_single_diff_hunk(hunk_ranges[1].clone(), cx);
21072    });
21073    executor.run_until_parked();
21074
21075    cx.assert_state_with_diff(both_hunks_expanded);
21076
21077    cx.set_state(
21078        &r#"
21079        ˇA
21080        b
21081        "#
21082        .unindent(),
21083    );
21084    cx.run_until_parked();
21085
21086    // TODO this cursor position seems bad
21087    cx.assert_state_with_diff(
21088        r#"
21089        - ˇa
21090        + A
21091          b
21092        "#
21093        .unindent(),
21094    );
21095
21096    cx.update_editor(|editor, window, cx| {
21097        editor.expand_all_diff_hunks(&ExpandAllDiffHunks, window, cx);
21098    });
21099
21100    cx.assert_state_with_diff(
21101        r#"
21102            - ˇa
21103            + A
21104              b
21105            - c
21106            "#
21107        .unindent(),
21108    );
21109
21110    let hunk_ranges = cx.update_editor(|editor, window, cx| {
21111        let snapshot = editor.snapshot(window, cx);
21112        let hunks = editor
21113            .diff_hunks_in_ranges(&[Anchor::min()..Anchor::max()], &snapshot.buffer_snapshot())
21114            .collect::<Vec<_>>();
21115        let excerpt_id = editor.buffer.read(cx).excerpt_ids()[0];
21116        let buffer_id = hunks[0].buffer_id;
21117        hunks
21118            .into_iter()
21119            .map(|hunk| Anchor::range_in_buffer(excerpt_id, buffer_id, hunk.buffer_range))
21120            .collect::<Vec<_>>()
21121    });
21122    assert_eq!(hunk_ranges.len(), 2);
21123
21124    cx.update_editor(|editor, _, cx| {
21125        editor.toggle_single_diff_hunk(hunk_ranges[1].clone(), cx);
21126    });
21127    executor.run_until_parked();
21128
21129    cx.assert_state_with_diff(
21130        r#"
21131        - ˇa
21132        + A
21133          b
21134        "#
21135        .unindent(),
21136    );
21137}
21138
21139#[gpui::test]
21140async fn test_toggle_deletion_hunk_at_start_of_file(
21141    executor: BackgroundExecutor,
21142    cx: &mut TestAppContext,
21143) {
21144    init_test(cx, |_| {});
21145    let mut cx = EditorTestContext::new(cx).await;
21146
21147    let diff_base = r#"
21148        a
21149        b
21150        c
21151        "#
21152    .unindent();
21153
21154    cx.set_state(
21155        &r#"
21156        ˇb
21157        c
21158        "#
21159        .unindent(),
21160    );
21161    cx.set_head_text(&diff_base);
21162    cx.update_editor(|editor, window, cx| {
21163        editor.expand_all_diff_hunks(&ExpandAllDiffHunks, window, cx);
21164    });
21165    executor.run_until_parked();
21166
21167    let hunk_expanded = r#"
21168        - a
21169          ˇb
21170          c
21171        "#
21172    .unindent();
21173
21174    cx.assert_state_with_diff(hunk_expanded.clone());
21175
21176    let hunk_ranges = cx.update_editor(|editor, window, cx| {
21177        let snapshot = editor.snapshot(window, cx);
21178        let hunks = editor
21179            .diff_hunks_in_ranges(&[Anchor::min()..Anchor::max()], &snapshot.buffer_snapshot())
21180            .collect::<Vec<_>>();
21181        let excerpt_id = editor.buffer.read(cx).excerpt_ids()[0];
21182        let buffer_id = hunks[0].buffer_id;
21183        hunks
21184            .into_iter()
21185            .map(|hunk| Anchor::range_in_buffer(excerpt_id, buffer_id, hunk.buffer_range))
21186            .collect::<Vec<_>>()
21187    });
21188    assert_eq!(hunk_ranges.len(), 1);
21189
21190    cx.update_editor(|editor, _, cx| {
21191        editor.toggle_single_diff_hunk(hunk_ranges[0].clone(), cx);
21192    });
21193    executor.run_until_parked();
21194
21195    let hunk_collapsed = r#"
21196          ˇb
21197          c
21198        "#
21199    .unindent();
21200
21201    cx.assert_state_with_diff(hunk_collapsed);
21202
21203    cx.update_editor(|editor, _, cx| {
21204        editor.toggle_single_diff_hunk(hunk_ranges[0].clone(), cx);
21205    });
21206    executor.run_until_parked();
21207
21208    cx.assert_state_with_diff(hunk_expanded);
21209}
21210
21211#[gpui::test]
21212async fn test_display_diff_hunks(cx: &mut TestAppContext) {
21213    init_test(cx, |_| {});
21214
21215    let fs = FakeFs::new(cx.executor());
21216    fs.insert_tree(
21217        path!("/test"),
21218        json!({
21219            ".git": {},
21220            "file-1": "ONE\n",
21221            "file-2": "TWO\n",
21222            "file-3": "THREE\n",
21223        }),
21224    )
21225    .await;
21226
21227    fs.set_head_for_repo(
21228        path!("/test/.git").as_ref(),
21229        &[
21230            ("file-1", "one\n".into()),
21231            ("file-2", "two\n".into()),
21232            ("file-3", "three\n".into()),
21233        ],
21234        "deadbeef",
21235    );
21236
21237    let project = Project::test(fs, [path!("/test").as_ref()], cx).await;
21238    let mut buffers = vec![];
21239    for i in 1..=3 {
21240        let buffer = project
21241            .update(cx, |project, cx| {
21242                let path = format!(path!("/test/file-{}"), i);
21243                project.open_local_buffer(path, cx)
21244            })
21245            .await
21246            .unwrap();
21247        buffers.push(buffer);
21248    }
21249
21250    let multibuffer = cx.new(|cx| {
21251        let mut multibuffer = MultiBuffer::new(Capability::ReadWrite);
21252        multibuffer.set_all_diff_hunks_expanded(cx);
21253        for buffer in &buffers {
21254            let snapshot = buffer.read(cx).snapshot();
21255            multibuffer.set_excerpts_for_path(
21256                PathKey::with_sort_prefix(0, buffer.read(cx).file().unwrap().path().clone()),
21257                buffer.clone(),
21258                vec![text::Anchor::MIN.to_point(&snapshot)..text::Anchor::MAX.to_point(&snapshot)],
21259                2,
21260                cx,
21261            );
21262        }
21263        multibuffer
21264    });
21265
21266    let editor = cx.add_window(|window, cx| {
21267        Editor::new(EditorMode::full(), multibuffer, Some(project), window, cx)
21268    });
21269    cx.run_until_parked();
21270
21271    let snapshot = editor
21272        .update(cx, |editor, window, cx| editor.snapshot(window, cx))
21273        .unwrap();
21274    let hunks = snapshot
21275        .display_diff_hunks_for_rows(DisplayRow(0)..DisplayRow(u32::MAX), &Default::default())
21276        .map(|hunk| match hunk {
21277            DisplayDiffHunk::Unfolded {
21278                display_row_range, ..
21279            } => display_row_range,
21280            DisplayDiffHunk::Folded { .. } => unreachable!(),
21281        })
21282        .collect::<Vec<_>>();
21283    assert_eq!(
21284        hunks,
21285        [
21286            DisplayRow(2)..DisplayRow(4),
21287            DisplayRow(7)..DisplayRow(9),
21288            DisplayRow(12)..DisplayRow(14),
21289        ]
21290    );
21291}
21292
21293#[gpui::test]
21294async fn test_partially_staged_hunk(cx: &mut TestAppContext) {
21295    init_test(cx, |_| {});
21296
21297    let mut cx = EditorTestContext::new(cx).await;
21298    cx.set_head_text(indoc! { "
21299        one
21300        two
21301        three
21302        four
21303        five
21304        "
21305    });
21306    cx.set_index_text(indoc! { "
21307        one
21308        two
21309        three
21310        four
21311        five
21312        "
21313    });
21314    cx.set_state(indoc! {"
21315        one
21316        TWO
21317        ˇTHREE
21318        FOUR
21319        five
21320    "});
21321    cx.run_until_parked();
21322    cx.update_editor(|editor, window, cx| {
21323        editor.toggle_staged_selected_diff_hunks(&Default::default(), window, cx);
21324    });
21325    cx.run_until_parked();
21326    cx.assert_index_text(Some(indoc! {"
21327        one
21328        TWO
21329        THREE
21330        FOUR
21331        five
21332    "}));
21333    cx.set_state(indoc! { "
21334        one
21335        TWO
21336        ˇTHREE-HUNDRED
21337        FOUR
21338        five
21339    "});
21340    cx.run_until_parked();
21341    cx.update_editor(|editor, window, cx| {
21342        let snapshot = editor.snapshot(window, cx);
21343        let hunks = editor
21344            .diff_hunks_in_ranges(&[Anchor::min()..Anchor::max()], &snapshot.buffer_snapshot())
21345            .collect::<Vec<_>>();
21346        assert_eq!(hunks.len(), 1);
21347        assert_eq!(
21348            hunks[0].status(),
21349            DiffHunkStatus {
21350                kind: DiffHunkStatusKind::Modified,
21351                secondary: DiffHunkSecondaryStatus::OverlapsWithSecondaryHunk
21352            }
21353        );
21354
21355        editor.toggle_staged_selected_diff_hunks(&Default::default(), window, cx);
21356    });
21357    cx.run_until_parked();
21358    cx.assert_index_text(Some(indoc! {"
21359        one
21360        TWO
21361        THREE-HUNDRED
21362        FOUR
21363        five
21364    "}));
21365}
21366
21367#[gpui::test]
21368fn test_crease_insertion_and_rendering(cx: &mut TestAppContext) {
21369    init_test(cx, |_| {});
21370
21371    let editor = cx.add_window(|window, cx| {
21372        let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\nddddddd\n", cx);
21373        build_editor(buffer, window, cx)
21374    });
21375
21376    let render_args = Arc::new(Mutex::new(None));
21377    let snapshot = editor
21378        .update(cx, |editor, window, cx| {
21379            let snapshot = editor.buffer().read(cx).snapshot(cx);
21380            let range =
21381                snapshot.anchor_before(Point::new(1, 0))..snapshot.anchor_after(Point::new(2, 6));
21382
21383            struct RenderArgs {
21384                row: MultiBufferRow,
21385                folded: bool,
21386                callback: Arc<dyn Fn(bool, &mut Window, &mut App) + Send + Sync>,
21387            }
21388
21389            let crease = Crease::inline(
21390                range,
21391                FoldPlaceholder::test(),
21392                {
21393                    let toggle_callback = render_args.clone();
21394                    move |row, folded, callback, _window, _cx| {
21395                        *toggle_callback.lock() = Some(RenderArgs {
21396                            row,
21397                            folded,
21398                            callback,
21399                        });
21400                        div()
21401                    }
21402                },
21403                |_row, _folded, _window, _cx| div(),
21404            );
21405
21406            editor.insert_creases(Some(crease), cx);
21407            let snapshot = editor.snapshot(window, cx);
21408            let _div =
21409                snapshot.render_crease_toggle(MultiBufferRow(1), false, cx.entity(), window, cx);
21410            snapshot
21411        })
21412        .unwrap();
21413
21414    let render_args = render_args.lock().take().unwrap();
21415    assert_eq!(render_args.row, MultiBufferRow(1));
21416    assert!(!render_args.folded);
21417    assert!(!snapshot.is_line_folded(MultiBufferRow(1)));
21418
21419    cx.update_window(*editor, |_, window, cx| {
21420        (render_args.callback)(true, window, cx)
21421    })
21422    .unwrap();
21423    let snapshot = editor
21424        .update(cx, |editor, window, cx| editor.snapshot(window, cx))
21425        .unwrap();
21426    assert!(snapshot.is_line_folded(MultiBufferRow(1)));
21427
21428    cx.update_window(*editor, |_, window, cx| {
21429        (render_args.callback)(false, window, cx)
21430    })
21431    .unwrap();
21432    let snapshot = editor
21433        .update(cx, |editor, window, cx| editor.snapshot(window, cx))
21434        .unwrap();
21435    assert!(!snapshot.is_line_folded(MultiBufferRow(1)));
21436}
21437
21438#[gpui::test]
21439async fn test_input_text(cx: &mut TestAppContext) {
21440    init_test(cx, |_| {});
21441    let mut cx = EditorTestContext::new(cx).await;
21442
21443    cx.set_state(
21444        &r#"ˇone
21445        two
21446
21447        three
21448        fourˇ
21449        five
21450
21451        siˇx"#
21452            .unindent(),
21453    );
21454
21455    cx.dispatch_action(HandleInput(String::new()));
21456    cx.assert_editor_state(
21457        &r#"ˇone
21458        two
21459
21460        three
21461        fourˇ
21462        five
21463
21464        siˇx"#
21465            .unindent(),
21466    );
21467
21468    cx.dispatch_action(HandleInput("AAAA".to_string()));
21469    cx.assert_editor_state(
21470        &r#"AAAAˇone
21471        two
21472
21473        three
21474        fourAAAAˇ
21475        five
21476
21477        siAAAAˇx"#
21478            .unindent(),
21479    );
21480}
21481
21482#[gpui::test]
21483async fn test_scroll_cursor_center_top_bottom(cx: &mut TestAppContext) {
21484    init_test(cx, |_| {});
21485
21486    let mut cx = EditorTestContext::new(cx).await;
21487    cx.set_state(
21488        r#"let foo = 1;
21489let foo = 2;
21490let foo = 3;
21491let fooˇ = 4;
21492let foo = 5;
21493let foo = 6;
21494let foo = 7;
21495let foo = 8;
21496let foo = 9;
21497let foo = 10;
21498let foo = 11;
21499let foo = 12;
21500let foo = 13;
21501let foo = 14;
21502let foo = 15;"#,
21503    );
21504
21505    cx.update_editor(|e, window, cx| {
21506        assert_eq!(
21507            e.next_scroll_position,
21508            NextScrollCursorCenterTopBottom::Center,
21509            "Default next scroll direction is center",
21510        );
21511
21512        e.scroll_cursor_center_top_bottom(&ScrollCursorCenterTopBottom, window, cx);
21513        assert_eq!(
21514            e.next_scroll_position,
21515            NextScrollCursorCenterTopBottom::Top,
21516            "After center, next scroll direction should be top",
21517        );
21518
21519        e.scroll_cursor_center_top_bottom(&ScrollCursorCenterTopBottom, window, cx);
21520        assert_eq!(
21521            e.next_scroll_position,
21522            NextScrollCursorCenterTopBottom::Bottom,
21523            "After top, next scroll direction should be bottom",
21524        );
21525
21526        e.scroll_cursor_center_top_bottom(&ScrollCursorCenterTopBottom, window, cx);
21527        assert_eq!(
21528            e.next_scroll_position,
21529            NextScrollCursorCenterTopBottom::Center,
21530            "After bottom, scrolling should start over",
21531        );
21532
21533        e.scroll_cursor_center_top_bottom(&ScrollCursorCenterTopBottom, window, cx);
21534        assert_eq!(
21535            e.next_scroll_position,
21536            NextScrollCursorCenterTopBottom::Top,
21537            "Scrolling continues if retriggered fast enough"
21538        );
21539    });
21540
21541    cx.executor()
21542        .advance_clock(SCROLL_CENTER_TOP_BOTTOM_DEBOUNCE_TIMEOUT + Duration::from_millis(200));
21543    cx.executor().run_until_parked();
21544    cx.update_editor(|e, _, _| {
21545        assert_eq!(
21546            e.next_scroll_position,
21547            NextScrollCursorCenterTopBottom::Center,
21548            "If scrolling is not triggered fast enough, it should reset"
21549        );
21550    });
21551}
21552
21553#[gpui::test]
21554async fn test_goto_definition_with_find_all_references_fallback(cx: &mut TestAppContext) {
21555    init_test(cx, |_| {});
21556    let mut cx = EditorLspTestContext::new_rust(
21557        lsp::ServerCapabilities {
21558            definition_provider: Some(lsp::OneOf::Left(true)),
21559            references_provider: Some(lsp::OneOf::Left(true)),
21560            ..lsp::ServerCapabilities::default()
21561        },
21562        cx,
21563    )
21564    .await;
21565
21566    let set_up_lsp_handlers = |empty_go_to_definition: bool, cx: &mut EditorLspTestContext| {
21567        let go_to_definition = cx
21568            .lsp
21569            .set_request_handler::<lsp::request::GotoDefinition, _, _>(
21570                move |params, _| async move {
21571                    if empty_go_to_definition {
21572                        Ok(None)
21573                    } else {
21574                        Ok(Some(lsp::GotoDefinitionResponse::Scalar(lsp::Location {
21575                            uri: params.text_document_position_params.text_document.uri,
21576                            range: lsp::Range::new(
21577                                lsp::Position::new(4, 3),
21578                                lsp::Position::new(4, 6),
21579                            ),
21580                        })))
21581                    }
21582                },
21583            );
21584        let references = cx
21585            .lsp
21586            .set_request_handler::<lsp::request::References, _, _>(move |params, _| async move {
21587                Ok(Some(vec![lsp::Location {
21588                    uri: params.text_document_position.text_document.uri,
21589                    range: lsp::Range::new(lsp::Position::new(0, 8), lsp::Position::new(0, 11)),
21590                }]))
21591            });
21592        (go_to_definition, references)
21593    };
21594
21595    cx.set_state(
21596        &r#"fn one() {
21597            let mut a = ˇtwo();
21598        }
21599
21600        fn two() {}"#
21601            .unindent(),
21602    );
21603    set_up_lsp_handlers(false, &mut cx);
21604    let navigated = cx
21605        .update_editor(|editor, window, cx| editor.go_to_definition(&GoToDefinition, window, cx))
21606        .await
21607        .expect("Failed to navigate to definition");
21608    assert_eq!(
21609        navigated,
21610        Navigated::Yes,
21611        "Should have navigated to definition from the GetDefinition response"
21612    );
21613    cx.assert_editor_state(
21614        &r#"fn one() {
21615            let mut a = two();
21616        }
21617
21618        fn «twoˇ»() {}"#
21619            .unindent(),
21620    );
21621
21622    let editors = cx.update_workspace(|workspace, _, cx| {
21623        workspace.items_of_type::<Editor>(cx).collect::<Vec<_>>()
21624    });
21625    cx.update_editor(|_, _, test_editor_cx| {
21626        assert_eq!(
21627            editors.len(),
21628            1,
21629            "Initially, only one, test, editor should be open in the workspace"
21630        );
21631        assert_eq!(
21632            test_editor_cx.entity(),
21633            editors.last().expect("Asserted len is 1").clone()
21634        );
21635    });
21636
21637    set_up_lsp_handlers(true, &mut cx);
21638    let navigated = cx
21639        .update_editor(|editor, window, cx| editor.go_to_definition(&GoToDefinition, window, cx))
21640        .await
21641        .expect("Failed to navigate to lookup references");
21642    assert_eq!(
21643        navigated,
21644        Navigated::Yes,
21645        "Should have navigated to references as a fallback after empty GoToDefinition response"
21646    );
21647    // We should not change the selections in the existing file,
21648    // if opening another milti buffer with the references
21649    cx.assert_editor_state(
21650        &r#"fn one() {
21651            let mut a = two();
21652        }
21653
21654        fn «twoˇ»() {}"#
21655            .unindent(),
21656    );
21657    let editors = cx.update_workspace(|workspace, _, cx| {
21658        workspace.items_of_type::<Editor>(cx).collect::<Vec<_>>()
21659    });
21660    cx.update_editor(|_, _, test_editor_cx| {
21661        assert_eq!(
21662            editors.len(),
21663            2,
21664            "After falling back to references search, we open a new editor with the results"
21665        );
21666        let references_fallback_text = editors
21667            .into_iter()
21668            .find(|new_editor| *new_editor != test_editor_cx.entity())
21669            .expect("Should have one non-test editor now")
21670            .read(test_editor_cx)
21671            .text(test_editor_cx);
21672        assert_eq!(
21673            references_fallback_text, "fn one() {\n    let mut a = two();\n}",
21674            "Should use the range from the references response and not the GoToDefinition one"
21675        );
21676    });
21677}
21678
21679#[gpui::test]
21680async fn test_goto_definition_no_fallback(cx: &mut TestAppContext) {
21681    init_test(cx, |_| {});
21682    cx.update(|cx| {
21683        let mut editor_settings = EditorSettings::get_global(cx).clone();
21684        editor_settings.go_to_definition_fallback = GoToDefinitionFallback::None;
21685        EditorSettings::override_global(editor_settings, cx);
21686    });
21687    let mut cx = EditorLspTestContext::new_rust(
21688        lsp::ServerCapabilities {
21689            definition_provider: Some(lsp::OneOf::Left(true)),
21690            references_provider: Some(lsp::OneOf::Left(true)),
21691            ..lsp::ServerCapabilities::default()
21692        },
21693        cx,
21694    )
21695    .await;
21696    let original_state = r#"fn one() {
21697        let mut a = ˇtwo();
21698    }
21699
21700    fn two() {}"#
21701        .unindent();
21702    cx.set_state(&original_state);
21703
21704    let mut go_to_definition = cx
21705        .lsp
21706        .set_request_handler::<lsp::request::GotoDefinition, _, _>(
21707            move |_, _| async move { Ok(None) },
21708        );
21709    let _references = cx
21710        .lsp
21711        .set_request_handler::<lsp::request::References, _, _>(move |_, _| async move {
21712            panic!("Should not call for references with no go to definition fallback")
21713        });
21714
21715    let navigated = cx
21716        .update_editor(|editor, window, cx| editor.go_to_definition(&GoToDefinition, window, cx))
21717        .await
21718        .expect("Failed to navigate to lookup references");
21719    go_to_definition
21720        .next()
21721        .await
21722        .expect("Should have called the go_to_definition handler");
21723
21724    assert_eq!(
21725        navigated,
21726        Navigated::No,
21727        "Should have navigated to references as a fallback after empty GoToDefinition response"
21728    );
21729    cx.assert_editor_state(&original_state);
21730    let editors = cx.update_workspace(|workspace, _, cx| {
21731        workspace.items_of_type::<Editor>(cx).collect::<Vec<_>>()
21732    });
21733    cx.update_editor(|_, _, _| {
21734        assert_eq!(
21735            editors.len(),
21736            1,
21737            "After unsuccessful fallback, no other editor should have been opened"
21738        );
21739    });
21740}
21741
21742#[gpui::test]
21743async fn test_find_all_references_editor_reuse(cx: &mut TestAppContext) {
21744    init_test(cx, |_| {});
21745    let mut cx = EditorLspTestContext::new_rust(
21746        lsp::ServerCapabilities {
21747            references_provider: Some(lsp::OneOf::Left(true)),
21748            ..lsp::ServerCapabilities::default()
21749        },
21750        cx,
21751    )
21752    .await;
21753
21754    cx.set_state(
21755        &r#"
21756        fn one() {
21757            let mut a = two();
21758        }
21759
21760        fn ˇtwo() {}"#
21761            .unindent(),
21762    );
21763    cx.lsp
21764        .set_request_handler::<lsp::request::References, _, _>(move |params, _| async move {
21765            Ok(Some(vec![
21766                lsp::Location {
21767                    uri: params.text_document_position.text_document.uri.clone(),
21768                    range: lsp::Range::new(lsp::Position::new(0, 16), lsp::Position::new(0, 19)),
21769                },
21770                lsp::Location {
21771                    uri: params.text_document_position.text_document.uri,
21772                    range: lsp::Range::new(lsp::Position::new(4, 4), lsp::Position::new(4, 7)),
21773                },
21774            ]))
21775        });
21776    let navigated = cx
21777        .update_editor(|editor, window, cx| {
21778            editor.find_all_references(&FindAllReferences, window, cx)
21779        })
21780        .unwrap()
21781        .await
21782        .expect("Failed to navigate to references");
21783    assert_eq!(
21784        navigated,
21785        Navigated::Yes,
21786        "Should have navigated to references from the FindAllReferences response"
21787    );
21788    cx.assert_editor_state(
21789        &r#"fn one() {
21790            let mut a = two();
21791        }
21792
21793        fn ˇtwo() {}"#
21794            .unindent(),
21795    );
21796
21797    let editors = cx.update_workspace(|workspace, _, cx| {
21798        workspace.items_of_type::<Editor>(cx).collect::<Vec<_>>()
21799    });
21800    cx.update_editor(|_, _, _| {
21801        assert_eq!(editors.len(), 2, "We should have opened a new multibuffer");
21802    });
21803
21804    cx.set_state(
21805        &r#"fn one() {
21806            let mut a = ˇtwo();
21807        }
21808
21809        fn two() {}"#
21810            .unindent(),
21811    );
21812    let navigated = cx
21813        .update_editor(|editor, window, cx| {
21814            editor.find_all_references(&FindAllReferences, window, cx)
21815        })
21816        .unwrap()
21817        .await
21818        .expect("Failed to navigate to references");
21819    assert_eq!(
21820        navigated,
21821        Navigated::Yes,
21822        "Should have navigated to references from the FindAllReferences response"
21823    );
21824    cx.assert_editor_state(
21825        &r#"fn one() {
21826            let mut a = ˇtwo();
21827        }
21828
21829        fn two() {}"#
21830            .unindent(),
21831    );
21832    let editors = cx.update_workspace(|workspace, _, cx| {
21833        workspace.items_of_type::<Editor>(cx).collect::<Vec<_>>()
21834    });
21835    cx.update_editor(|_, _, _| {
21836        assert_eq!(
21837            editors.len(),
21838            2,
21839            "should have re-used the previous multibuffer"
21840        );
21841    });
21842
21843    cx.set_state(
21844        &r#"fn one() {
21845            let mut a = ˇtwo();
21846        }
21847        fn three() {}
21848        fn two() {}"#
21849            .unindent(),
21850    );
21851    cx.lsp
21852        .set_request_handler::<lsp::request::References, _, _>(move |params, _| async move {
21853            Ok(Some(vec![
21854                lsp::Location {
21855                    uri: params.text_document_position.text_document.uri.clone(),
21856                    range: lsp::Range::new(lsp::Position::new(0, 16), lsp::Position::new(0, 19)),
21857                },
21858                lsp::Location {
21859                    uri: params.text_document_position.text_document.uri,
21860                    range: lsp::Range::new(lsp::Position::new(5, 4), lsp::Position::new(5, 7)),
21861                },
21862            ]))
21863        });
21864    let navigated = cx
21865        .update_editor(|editor, window, cx| {
21866            editor.find_all_references(&FindAllReferences, window, cx)
21867        })
21868        .unwrap()
21869        .await
21870        .expect("Failed to navigate to references");
21871    assert_eq!(
21872        navigated,
21873        Navigated::Yes,
21874        "Should have navigated to references from the FindAllReferences response"
21875    );
21876    cx.assert_editor_state(
21877        &r#"fn one() {
21878                let mut a = ˇtwo();
21879            }
21880            fn three() {}
21881            fn two() {}"#
21882            .unindent(),
21883    );
21884    let editors = cx.update_workspace(|workspace, _, cx| {
21885        workspace.items_of_type::<Editor>(cx).collect::<Vec<_>>()
21886    });
21887    cx.update_editor(|_, _, _| {
21888        assert_eq!(
21889            editors.len(),
21890            3,
21891            "should have used a new multibuffer as offsets changed"
21892        );
21893    });
21894}
21895#[gpui::test]
21896async fn test_find_enclosing_node_with_task(cx: &mut TestAppContext) {
21897    init_test(cx, |_| {});
21898
21899    let language = Arc::new(Language::new(
21900        LanguageConfig::default(),
21901        Some(tree_sitter_rust::LANGUAGE.into()),
21902    ));
21903
21904    let text = r#"
21905        #[cfg(test)]
21906        mod tests() {
21907            #[test]
21908            fn runnable_1() {
21909                let a = 1;
21910            }
21911
21912            #[test]
21913            fn runnable_2() {
21914                let a = 1;
21915                let b = 2;
21916            }
21917        }
21918    "#
21919    .unindent();
21920
21921    let fs = FakeFs::new(cx.executor());
21922    fs.insert_file("/file.rs", Default::default()).await;
21923
21924    let project = Project::test(fs, ["/a".as_ref()], cx).await;
21925    let workspace = cx.add_window(|window, cx| Workspace::test_new(project.clone(), window, cx));
21926    let cx = &mut VisualTestContext::from_window(*workspace.deref(), cx);
21927    let buffer = cx.new(|cx| Buffer::local(text, cx).with_language(language, cx));
21928    let multi_buffer = cx.new(|cx| MultiBuffer::singleton(buffer.clone(), cx));
21929
21930    let editor = cx.new_window_entity(|window, cx| {
21931        Editor::new(
21932            EditorMode::full(),
21933            multi_buffer,
21934            Some(project.clone()),
21935            window,
21936            cx,
21937        )
21938    });
21939
21940    editor.update_in(cx, |editor, window, cx| {
21941        let snapshot = editor.buffer().read(cx).snapshot(cx);
21942        editor.tasks.insert(
21943            (buffer.read(cx).remote_id(), 3),
21944            RunnableTasks {
21945                templates: vec![],
21946                offset: snapshot.anchor_before(43),
21947                column: 0,
21948                extra_variables: HashMap::default(),
21949                context_range: BufferOffset(43)..BufferOffset(85),
21950            },
21951        );
21952        editor.tasks.insert(
21953            (buffer.read(cx).remote_id(), 8),
21954            RunnableTasks {
21955                templates: vec![],
21956                offset: snapshot.anchor_before(86),
21957                column: 0,
21958                extra_variables: HashMap::default(),
21959                context_range: BufferOffset(86)..BufferOffset(191),
21960            },
21961        );
21962
21963        // Test finding task when cursor is inside function body
21964        editor.change_selections(SelectionEffects::no_scroll(), window, cx, |s| {
21965            s.select_ranges([Point::new(4, 5)..Point::new(4, 5)])
21966        });
21967        let (_, row, _) = editor.find_enclosing_node_task(cx).unwrap();
21968        assert_eq!(row, 3, "Should find task for cursor inside runnable_1");
21969
21970        // Test finding task when cursor is on function name
21971        editor.change_selections(SelectionEffects::no_scroll(), window, cx, |s| {
21972            s.select_ranges([Point::new(8, 4)..Point::new(8, 4)])
21973        });
21974        let (_, row, _) = editor.find_enclosing_node_task(cx).unwrap();
21975        assert_eq!(row, 8, "Should find task when cursor is on function name");
21976    });
21977}
21978
21979#[gpui::test]
21980async fn test_folding_buffers(cx: &mut TestAppContext) {
21981    init_test(cx, |_| {});
21982
21983    let sample_text_1 = "aaaa\nbbbb\ncccc\ndddd\neeee\nffff\ngggg\nhhhh\niiii\njjjj".to_string();
21984    let sample_text_2 = "llll\nmmmm\nnnnn\noooo\npppp\nqqqq\nrrrr\nssss\ntttt\nuuuu".to_string();
21985    let sample_text_3 = "vvvv\nwwww\nxxxx\nyyyy\nzzzz\n1111\n2222\n3333\n4444\n5555".to_string();
21986
21987    let fs = FakeFs::new(cx.executor());
21988    fs.insert_tree(
21989        path!("/a"),
21990        json!({
21991            "first.rs": sample_text_1,
21992            "second.rs": sample_text_2,
21993            "third.rs": sample_text_3,
21994        }),
21995    )
21996    .await;
21997    let project = Project::test(fs, [path!("/a").as_ref()], cx).await;
21998    let workspace = cx.add_window(|window, cx| Workspace::test_new(project.clone(), window, cx));
21999    let cx = &mut VisualTestContext::from_window(*workspace.deref(), cx);
22000    let worktree = project.update(cx, |project, cx| {
22001        let mut worktrees = project.worktrees(cx).collect::<Vec<_>>();
22002        assert_eq!(worktrees.len(), 1);
22003        worktrees.pop().unwrap()
22004    });
22005    let worktree_id = worktree.update(cx, |worktree, _| worktree.id());
22006
22007    let buffer_1 = project
22008        .update(cx, |project, cx| {
22009            project.open_buffer((worktree_id, rel_path("first.rs")), cx)
22010        })
22011        .await
22012        .unwrap();
22013    let buffer_2 = project
22014        .update(cx, |project, cx| {
22015            project.open_buffer((worktree_id, rel_path("second.rs")), cx)
22016        })
22017        .await
22018        .unwrap();
22019    let buffer_3 = project
22020        .update(cx, |project, cx| {
22021            project.open_buffer((worktree_id, rel_path("third.rs")), cx)
22022        })
22023        .await
22024        .unwrap();
22025
22026    let multi_buffer = cx.new(|cx| {
22027        let mut multi_buffer = MultiBuffer::new(ReadWrite);
22028        multi_buffer.push_excerpts(
22029            buffer_1.clone(),
22030            [
22031                ExcerptRange::new(Point::new(0, 0)..Point::new(3, 0)),
22032                ExcerptRange::new(Point::new(5, 0)..Point::new(7, 0)),
22033                ExcerptRange::new(Point::new(9, 0)..Point::new(10, 4)),
22034            ],
22035            cx,
22036        );
22037        multi_buffer.push_excerpts(
22038            buffer_2.clone(),
22039            [
22040                ExcerptRange::new(Point::new(0, 0)..Point::new(3, 0)),
22041                ExcerptRange::new(Point::new(5, 0)..Point::new(7, 0)),
22042                ExcerptRange::new(Point::new(9, 0)..Point::new(10, 4)),
22043            ],
22044            cx,
22045        );
22046        multi_buffer.push_excerpts(
22047            buffer_3.clone(),
22048            [
22049                ExcerptRange::new(Point::new(0, 0)..Point::new(3, 0)),
22050                ExcerptRange::new(Point::new(5, 0)..Point::new(7, 0)),
22051                ExcerptRange::new(Point::new(9, 0)..Point::new(10, 4)),
22052            ],
22053            cx,
22054        );
22055        multi_buffer
22056    });
22057    let multi_buffer_editor = cx.new_window_entity(|window, cx| {
22058        Editor::new(
22059            EditorMode::full(),
22060            multi_buffer.clone(),
22061            Some(project.clone()),
22062            window,
22063            cx,
22064        )
22065    });
22066
22067    assert_eq!(
22068        multi_buffer_editor.update(cx, |editor, cx| editor.display_text(cx)),
22069        "\n\naaaa\nbbbb\ncccc\n\n\nffff\ngggg\n\n\njjjj\n\n\nllll\nmmmm\nnnnn\n\n\nqqqq\nrrrr\n\n\nuuuu\n\n\nvvvv\nwwww\nxxxx\n\n\n1111\n2222\n\n\n5555",
22070    );
22071
22072    multi_buffer_editor.update(cx, |editor, cx| {
22073        editor.fold_buffer(buffer_1.read(cx).remote_id(), cx)
22074    });
22075    assert_eq!(
22076        multi_buffer_editor.update(cx, |editor, cx| editor.display_text(cx)),
22077        "\n\n\n\nllll\nmmmm\nnnnn\n\n\nqqqq\nrrrr\n\n\nuuuu\n\n\nvvvv\nwwww\nxxxx\n\n\n1111\n2222\n\n\n5555",
22078        "After folding the first buffer, its text should not be displayed"
22079    );
22080
22081    multi_buffer_editor.update(cx, |editor, cx| {
22082        editor.fold_buffer(buffer_2.read(cx).remote_id(), cx)
22083    });
22084    assert_eq!(
22085        multi_buffer_editor.update(cx, |editor, cx| editor.display_text(cx)),
22086        "\n\n\n\n\n\nvvvv\nwwww\nxxxx\n\n\n1111\n2222\n\n\n5555",
22087        "After folding the second buffer, its text should not be displayed"
22088    );
22089
22090    multi_buffer_editor.update(cx, |editor, cx| {
22091        editor.fold_buffer(buffer_3.read(cx).remote_id(), cx)
22092    });
22093    assert_eq!(
22094        multi_buffer_editor.update(cx, |editor, cx| editor.display_text(cx)),
22095        "\n\n\n\n\n",
22096        "After folding the third buffer, its text should not be displayed"
22097    );
22098
22099    // Emulate selection inside the fold logic, that should work
22100    multi_buffer_editor.update_in(cx, |editor, window, cx| {
22101        editor
22102            .snapshot(window, cx)
22103            .next_line_boundary(Point::new(0, 4));
22104    });
22105
22106    multi_buffer_editor.update(cx, |editor, cx| {
22107        editor.unfold_buffer(buffer_2.read(cx).remote_id(), cx)
22108    });
22109    assert_eq!(
22110        multi_buffer_editor.update(cx, |editor, cx| editor.display_text(cx)),
22111        "\n\n\n\nllll\nmmmm\nnnnn\n\n\nqqqq\nrrrr\n\n\nuuuu\n\n",
22112        "After unfolding the second buffer, its text should be displayed"
22113    );
22114
22115    // Typing inside of buffer 1 causes that buffer to be unfolded.
22116    multi_buffer_editor.update_in(cx, |editor, window, cx| {
22117        assert_eq!(
22118            multi_buffer
22119                .read(cx)
22120                .snapshot(cx)
22121                .text_for_range(Point::new(1, 0)..Point::new(1, 4))
22122                .collect::<String>(),
22123            "bbbb"
22124        );
22125        editor.change_selections(SelectionEffects::no_scroll(), window, cx, |selections| {
22126            selections.select_ranges(vec![Point::new(1, 0)..Point::new(1, 0)]);
22127        });
22128        editor.handle_input("B", window, cx);
22129    });
22130
22131    assert_eq!(
22132        multi_buffer_editor.update(cx, |editor, cx| editor.display_text(cx)),
22133        "\n\nB\n\n\n\n\n\n\nllll\nmmmm\nnnnn\n\n\nqqqq\nrrrr\n\n\nuuuu\n\n",
22134        "After unfolding the first buffer, its and 2nd buffer's text should be displayed"
22135    );
22136
22137    multi_buffer_editor.update(cx, |editor, cx| {
22138        editor.unfold_buffer(buffer_3.read(cx).remote_id(), cx)
22139    });
22140    assert_eq!(
22141        multi_buffer_editor.update(cx, |editor, cx| editor.display_text(cx)),
22142        "\n\nB\n\n\n\n\n\n\nllll\nmmmm\nnnnn\n\n\nqqqq\nrrrr\n\n\nuuuu\n\n\nvvvv\nwwww\nxxxx\n\n\n1111\n2222\n\n\n5555",
22143        "After unfolding the all buffers, all original text should be displayed"
22144    );
22145}
22146
22147#[gpui::test]
22148async fn test_folding_buffers_with_one_excerpt(cx: &mut TestAppContext) {
22149    init_test(cx, |_| {});
22150
22151    let sample_text_1 = "1111\n2222\n3333".to_string();
22152    let sample_text_2 = "4444\n5555\n6666".to_string();
22153    let sample_text_3 = "7777\n8888\n9999".to_string();
22154
22155    let fs = FakeFs::new(cx.executor());
22156    fs.insert_tree(
22157        path!("/a"),
22158        json!({
22159            "first.rs": sample_text_1,
22160            "second.rs": sample_text_2,
22161            "third.rs": sample_text_3,
22162        }),
22163    )
22164    .await;
22165    let project = Project::test(fs, [path!("/a").as_ref()], cx).await;
22166    let workspace = cx.add_window(|window, cx| Workspace::test_new(project.clone(), window, cx));
22167    let cx = &mut VisualTestContext::from_window(*workspace.deref(), cx);
22168    let worktree = project.update(cx, |project, cx| {
22169        let mut worktrees = project.worktrees(cx).collect::<Vec<_>>();
22170        assert_eq!(worktrees.len(), 1);
22171        worktrees.pop().unwrap()
22172    });
22173    let worktree_id = worktree.update(cx, |worktree, _| worktree.id());
22174
22175    let buffer_1 = project
22176        .update(cx, |project, cx| {
22177            project.open_buffer((worktree_id, rel_path("first.rs")), cx)
22178        })
22179        .await
22180        .unwrap();
22181    let buffer_2 = project
22182        .update(cx, |project, cx| {
22183            project.open_buffer((worktree_id, rel_path("second.rs")), cx)
22184        })
22185        .await
22186        .unwrap();
22187    let buffer_3 = project
22188        .update(cx, |project, cx| {
22189            project.open_buffer((worktree_id, rel_path("third.rs")), cx)
22190        })
22191        .await
22192        .unwrap();
22193
22194    let multi_buffer = cx.new(|cx| {
22195        let mut multi_buffer = MultiBuffer::new(ReadWrite);
22196        multi_buffer.push_excerpts(
22197            buffer_1.clone(),
22198            [ExcerptRange::new(Point::new(0, 0)..Point::new(3, 0))],
22199            cx,
22200        );
22201        multi_buffer.push_excerpts(
22202            buffer_2.clone(),
22203            [ExcerptRange::new(Point::new(0, 0)..Point::new(3, 0))],
22204            cx,
22205        );
22206        multi_buffer.push_excerpts(
22207            buffer_3.clone(),
22208            [ExcerptRange::new(Point::new(0, 0)..Point::new(3, 0))],
22209            cx,
22210        );
22211        multi_buffer
22212    });
22213
22214    let multi_buffer_editor = cx.new_window_entity(|window, cx| {
22215        Editor::new(
22216            EditorMode::full(),
22217            multi_buffer,
22218            Some(project.clone()),
22219            window,
22220            cx,
22221        )
22222    });
22223
22224    let full_text = "\n\n1111\n2222\n3333\n\n\n4444\n5555\n6666\n\n\n7777\n8888\n9999";
22225    assert_eq!(
22226        multi_buffer_editor.update(cx, |editor, cx| editor.display_text(cx)),
22227        full_text,
22228    );
22229
22230    multi_buffer_editor.update(cx, |editor, cx| {
22231        editor.fold_buffer(buffer_1.read(cx).remote_id(), cx)
22232    });
22233    assert_eq!(
22234        multi_buffer_editor.update(cx, |editor, cx| editor.display_text(cx)),
22235        "\n\n\n\n4444\n5555\n6666\n\n\n7777\n8888\n9999",
22236        "After folding the first buffer, its text should not be displayed"
22237    );
22238
22239    multi_buffer_editor.update(cx, |editor, cx| {
22240        editor.fold_buffer(buffer_2.read(cx).remote_id(), cx)
22241    });
22242
22243    assert_eq!(
22244        multi_buffer_editor.update(cx, |editor, cx| editor.display_text(cx)),
22245        "\n\n\n\n\n\n7777\n8888\n9999",
22246        "After folding the second buffer, its text should not be displayed"
22247    );
22248
22249    multi_buffer_editor.update(cx, |editor, cx| {
22250        editor.fold_buffer(buffer_3.read(cx).remote_id(), cx)
22251    });
22252    assert_eq!(
22253        multi_buffer_editor.update(cx, |editor, cx| editor.display_text(cx)),
22254        "\n\n\n\n\n",
22255        "After folding the third buffer, its text should not be displayed"
22256    );
22257
22258    multi_buffer_editor.update(cx, |editor, cx| {
22259        editor.unfold_buffer(buffer_2.read(cx).remote_id(), cx)
22260    });
22261    assert_eq!(
22262        multi_buffer_editor.update(cx, |editor, cx| editor.display_text(cx)),
22263        "\n\n\n\n4444\n5555\n6666\n\n",
22264        "After unfolding the second buffer, its text should be displayed"
22265    );
22266
22267    multi_buffer_editor.update(cx, |editor, cx| {
22268        editor.unfold_buffer(buffer_1.read(cx).remote_id(), cx)
22269    });
22270    assert_eq!(
22271        multi_buffer_editor.update(cx, |editor, cx| editor.display_text(cx)),
22272        "\n\n1111\n2222\n3333\n\n\n4444\n5555\n6666\n\n",
22273        "After unfolding the first buffer, its text should be displayed"
22274    );
22275
22276    multi_buffer_editor.update(cx, |editor, cx| {
22277        editor.unfold_buffer(buffer_3.read(cx).remote_id(), cx)
22278    });
22279    assert_eq!(
22280        multi_buffer_editor.update(cx, |editor, cx| editor.display_text(cx)),
22281        full_text,
22282        "After unfolding all buffers, all original text should be displayed"
22283    );
22284}
22285
22286#[gpui::test]
22287async fn test_folding_buffer_when_multibuffer_has_only_one_excerpt(cx: &mut TestAppContext) {
22288    init_test(cx, |_| {});
22289
22290    let sample_text = "aaaa\nbbbb\ncccc\ndddd\neeee\nffff\ngggg\nhhhh\niiii\njjjj".to_string();
22291
22292    let fs = FakeFs::new(cx.executor());
22293    fs.insert_tree(
22294        path!("/a"),
22295        json!({
22296            "main.rs": sample_text,
22297        }),
22298    )
22299    .await;
22300    let project = Project::test(fs, [path!("/a").as_ref()], cx).await;
22301    let workspace = cx.add_window(|window, cx| Workspace::test_new(project.clone(), window, cx));
22302    let cx = &mut VisualTestContext::from_window(*workspace.deref(), cx);
22303    let worktree = project.update(cx, |project, cx| {
22304        let mut worktrees = project.worktrees(cx).collect::<Vec<_>>();
22305        assert_eq!(worktrees.len(), 1);
22306        worktrees.pop().unwrap()
22307    });
22308    let worktree_id = worktree.update(cx, |worktree, _| worktree.id());
22309
22310    let buffer_1 = project
22311        .update(cx, |project, cx| {
22312            project.open_buffer((worktree_id, rel_path("main.rs")), cx)
22313        })
22314        .await
22315        .unwrap();
22316
22317    let multi_buffer = cx.new(|cx| {
22318        let mut multi_buffer = MultiBuffer::new(ReadWrite);
22319        multi_buffer.push_excerpts(
22320            buffer_1.clone(),
22321            [ExcerptRange::new(
22322                Point::new(0, 0)
22323                    ..Point::new(
22324                        sample_text.chars().filter(|&c| c == '\n').count() as u32 + 1,
22325                        0,
22326                    ),
22327            )],
22328            cx,
22329        );
22330        multi_buffer
22331    });
22332    let multi_buffer_editor = cx.new_window_entity(|window, cx| {
22333        Editor::new(
22334            EditorMode::full(),
22335            multi_buffer,
22336            Some(project.clone()),
22337            window,
22338            cx,
22339        )
22340    });
22341
22342    let selection_range = Point::new(1, 0)..Point::new(2, 0);
22343    multi_buffer_editor.update_in(cx, |editor, window, cx| {
22344        enum TestHighlight {}
22345        let multi_buffer_snapshot = editor.buffer().read(cx).snapshot(cx);
22346        let highlight_range = selection_range.clone().to_anchors(&multi_buffer_snapshot);
22347        editor.highlight_text::<TestHighlight>(
22348            vec![highlight_range.clone()],
22349            HighlightStyle::color(Hsla::green()),
22350            cx,
22351        );
22352        editor.change_selections(SelectionEffects::no_scroll(), window, cx, |s| {
22353            s.select_ranges(Some(highlight_range))
22354        });
22355    });
22356
22357    let full_text = format!("\n\n{sample_text}");
22358    assert_eq!(
22359        multi_buffer_editor.update(cx, |editor, cx| editor.display_text(cx)),
22360        full_text,
22361    );
22362}
22363
22364#[gpui::test]
22365async fn test_multi_buffer_navigation_with_folded_buffers(cx: &mut TestAppContext) {
22366    init_test(cx, |_| {});
22367    cx.update(|cx| {
22368        let default_key_bindings = settings::KeymapFile::load_asset_allow_partial_failure(
22369            "keymaps/default-linux.json",
22370            cx,
22371        )
22372        .unwrap();
22373        cx.bind_keys(default_key_bindings);
22374    });
22375
22376    let (editor, cx) = cx.add_window_view(|window, cx| {
22377        let multi_buffer = MultiBuffer::build_multi(
22378            [
22379                ("a0\nb0\nc0\nd0\ne0\n", vec![Point::row_range(0..2)]),
22380                ("a1\nb1\nc1\nd1\ne1\n", vec![Point::row_range(0..2)]),
22381                ("a2\nb2\nc2\nd2\ne2\n", vec![Point::row_range(0..2)]),
22382                ("a3\nb3\nc3\nd3\ne3\n", vec![Point::row_range(0..2)]),
22383            ],
22384            cx,
22385        );
22386        let mut editor = Editor::new(EditorMode::full(), multi_buffer.clone(), None, window, cx);
22387
22388        let buffer_ids = multi_buffer.read(cx).excerpt_buffer_ids();
22389        // fold all but the second buffer, so that we test navigating between two
22390        // adjacent folded buffers, as well as folded buffers at the start and
22391        // end the multibuffer
22392        editor.fold_buffer(buffer_ids[0], cx);
22393        editor.fold_buffer(buffer_ids[2], cx);
22394        editor.fold_buffer(buffer_ids[3], cx);
22395
22396        editor
22397    });
22398    cx.simulate_resize(size(px(1000.), px(1000.)));
22399
22400    let mut cx = EditorTestContext::for_editor_in(editor.clone(), cx).await;
22401    cx.assert_excerpts_with_selections(indoc! {"
22402        [EXCERPT]
22403        ˇ[FOLDED]
22404        [EXCERPT]
22405        a1
22406        b1
22407        [EXCERPT]
22408        [FOLDED]
22409        [EXCERPT]
22410        [FOLDED]
22411        "
22412    });
22413    cx.simulate_keystroke("down");
22414    cx.assert_excerpts_with_selections(indoc! {"
22415        [EXCERPT]
22416        [FOLDED]
22417        [EXCERPT]
22418        ˇa1
22419        b1
22420        [EXCERPT]
22421        [FOLDED]
22422        [EXCERPT]
22423        [FOLDED]
22424        "
22425    });
22426    cx.simulate_keystroke("down");
22427    cx.assert_excerpts_with_selections(indoc! {"
22428        [EXCERPT]
22429        [FOLDED]
22430        [EXCERPT]
22431        a1
22432        ˇb1
22433        [EXCERPT]
22434        [FOLDED]
22435        [EXCERPT]
22436        [FOLDED]
22437        "
22438    });
22439    cx.simulate_keystroke("down");
22440    cx.assert_excerpts_with_selections(indoc! {"
22441        [EXCERPT]
22442        [FOLDED]
22443        [EXCERPT]
22444        a1
22445        b1
22446        ˇ[EXCERPT]
22447        [FOLDED]
22448        [EXCERPT]
22449        [FOLDED]
22450        "
22451    });
22452    cx.simulate_keystroke("down");
22453    cx.assert_excerpts_with_selections(indoc! {"
22454        [EXCERPT]
22455        [FOLDED]
22456        [EXCERPT]
22457        a1
22458        b1
22459        [EXCERPT]
22460        ˇ[FOLDED]
22461        [EXCERPT]
22462        [FOLDED]
22463        "
22464    });
22465    for _ in 0..5 {
22466        cx.simulate_keystroke("down");
22467        cx.assert_excerpts_with_selections(indoc! {"
22468            [EXCERPT]
22469            [FOLDED]
22470            [EXCERPT]
22471            a1
22472            b1
22473            [EXCERPT]
22474            [FOLDED]
22475            [EXCERPT]
22476            ˇ[FOLDED]
22477            "
22478        });
22479    }
22480
22481    cx.simulate_keystroke("up");
22482    cx.assert_excerpts_with_selections(indoc! {"
22483        [EXCERPT]
22484        [FOLDED]
22485        [EXCERPT]
22486        a1
22487        b1
22488        [EXCERPT]
22489        ˇ[FOLDED]
22490        [EXCERPT]
22491        [FOLDED]
22492        "
22493    });
22494    cx.simulate_keystroke("up");
22495    cx.assert_excerpts_with_selections(indoc! {"
22496        [EXCERPT]
22497        [FOLDED]
22498        [EXCERPT]
22499        a1
22500        b1
22501        ˇ[EXCERPT]
22502        [FOLDED]
22503        [EXCERPT]
22504        [FOLDED]
22505        "
22506    });
22507    cx.simulate_keystroke("up");
22508    cx.assert_excerpts_with_selections(indoc! {"
22509        [EXCERPT]
22510        [FOLDED]
22511        [EXCERPT]
22512        a1
22513        ˇb1
22514        [EXCERPT]
22515        [FOLDED]
22516        [EXCERPT]
22517        [FOLDED]
22518        "
22519    });
22520    cx.simulate_keystroke("up");
22521    cx.assert_excerpts_with_selections(indoc! {"
22522        [EXCERPT]
22523        [FOLDED]
22524        [EXCERPT]
22525        ˇa1
22526        b1
22527        [EXCERPT]
22528        [FOLDED]
22529        [EXCERPT]
22530        [FOLDED]
22531        "
22532    });
22533    for _ in 0..5 {
22534        cx.simulate_keystroke("up");
22535        cx.assert_excerpts_with_selections(indoc! {"
22536            [EXCERPT]
22537            ˇ[FOLDED]
22538            [EXCERPT]
22539            a1
22540            b1
22541            [EXCERPT]
22542            [FOLDED]
22543            [EXCERPT]
22544            [FOLDED]
22545            "
22546        });
22547    }
22548}
22549
22550#[gpui::test]
22551async fn test_edit_prediction_text(cx: &mut TestAppContext) {
22552    init_test(cx, |_| {});
22553
22554    // Simple insertion
22555    assert_highlighted_edits(
22556        "Hello, world!",
22557        vec![(Point::new(0, 6)..Point::new(0, 6), " beautiful".into())],
22558        true,
22559        cx,
22560        |highlighted_edits, cx| {
22561            assert_eq!(highlighted_edits.text, "Hello, beautiful world!");
22562            assert_eq!(highlighted_edits.highlights.len(), 1);
22563            assert_eq!(highlighted_edits.highlights[0].0, 6..16);
22564            assert_eq!(
22565                highlighted_edits.highlights[0].1.background_color,
22566                Some(cx.theme().status().created_background)
22567            );
22568        },
22569    )
22570    .await;
22571
22572    // Replacement
22573    assert_highlighted_edits(
22574        "This is a test.",
22575        vec![(Point::new(0, 0)..Point::new(0, 4), "That".into())],
22576        false,
22577        cx,
22578        |highlighted_edits, cx| {
22579            assert_eq!(highlighted_edits.text, "That is a test.");
22580            assert_eq!(highlighted_edits.highlights.len(), 1);
22581            assert_eq!(highlighted_edits.highlights[0].0, 0..4);
22582            assert_eq!(
22583                highlighted_edits.highlights[0].1.background_color,
22584                Some(cx.theme().status().created_background)
22585            );
22586        },
22587    )
22588    .await;
22589
22590    // Multiple edits
22591    assert_highlighted_edits(
22592        "Hello, world!",
22593        vec![
22594            (Point::new(0, 0)..Point::new(0, 5), "Greetings".into()),
22595            (Point::new(0, 12)..Point::new(0, 12), " and universe".into()),
22596        ],
22597        false,
22598        cx,
22599        |highlighted_edits, cx| {
22600            assert_eq!(highlighted_edits.text, "Greetings, world and universe!");
22601            assert_eq!(highlighted_edits.highlights.len(), 2);
22602            assert_eq!(highlighted_edits.highlights[0].0, 0..9);
22603            assert_eq!(highlighted_edits.highlights[1].0, 16..29);
22604            assert_eq!(
22605                highlighted_edits.highlights[0].1.background_color,
22606                Some(cx.theme().status().created_background)
22607            );
22608            assert_eq!(
22609                highlighted_edits.highlights[1].1.background_color,
22610                Some(cx.theme().status().created_background)
22611            );
22612        },
22613    )
22614    .await;
22615
22616    // Multiple lines with edits
22617    assert_highlighted_edits(
22618        "First line\nSecond line\nThird line\nFourth line",
22619        vec![
22620            (Point::new(1, 7)..Point::new(1, 11), "modified".to_string()),
22621            (
22622                Point::new(2, 0)..Point::new(2, 10),
22623                "New third line".to_string(),
22624            ),
22625            (Point::new(3, 6)..Point::new(3, 6), " updated".to_string()),
22626        ],
22627        false,
22628        cx,
22629        |highlighted_edits, cx| {
22630            assert_eq!(
22631                highlighted_edits.text,
22632                "Second modified\nNew third line\nFourth updated line"
22633            );
22634            assert_eq!(highlighted_edits.highlights.len(), 3);
22635            assert_eq!(highlighted_edits.highlights[0].0, 7..15); // "modified"
22636            assert_eq!(highlighted_edits.highlights[1].0, 16..30); // "New third line"
22637            assert_eq!(highlighted_edits.highlights[2].0, 37..45); // " updated"
22638            for highlight in &highlighted_edits.highlights {
22639                assert_eq!(
22640                    highlight.1.background_color,
22641                    Some(cx.theme().status().created_background)
22642                );
22643            }
22644        },
22645    )
22646    .await;
22647}
22648
22649#[gpui::test]
22650async fn test_edit_prediction_text_with_deletions(cx: &mut TestAppContext) {
22651    init_test(cx, |_| {});
22652
22653    // Deletion
22654    assert_highlighted_edits(
22655        "Hello, world!",
22656        vec![(Point::new(0, 5)..Point::new(0, 11), "".to_string())],
22657        true,
22658        cx,
22659        |highlighted_edits, cx| {
22660            assert_eq!(highlighted_edits.text, "Hello, world!");
22661            assert_eq!(highlighted_edits.highlights.len(), 1);
22662            assert_eq!(highlighted_edits.highlights[0].0, 5..11);
22663            assert_eq!(
22664                highlighted_edits.highlights[0].1.background_color,
22665                Some(cx.theme().status().deleted_background)
22666            );
22667        },
22668    )
22669    .await;
22670
22671    // Insertion
22672    assert_highlighted_edits(
22673        "Hello, world!",
22674        vec![(Point::new(0, 6)..Point::new(0, 6), " digital".to_string())],
22675        true,
22676        cx,
22677        |highlighted_edits, cx| {
22678            assert_eq!(highlighted_edits.highlights.len(), 1);
22679            assert_eq!(highlighted_edits.highlights[0].0, 6..14);
22680            assert_eq!(
22681                highlighted_edits.highlights[0].1.background_color,
22682                Some(cx.theme().status().created_background)
22683            );
22684        },
22685    )
22686    .await;
22687}
22688
22689async fn assert_highlighted_edits(
22690    text: &str,
22691    edits: Vec<(Range<Point>, String)>,
22692    include_deletions: bool,
22693    cx: &mut TestAppContext,
22694    assertion_fn: impl Fn(HighlightedText, &App),
22695) {
22696    let window = cx.add_window(|window, cx| {
22697        let buffer = MultiBuffer::build_simple(text, cx);
22698        Editor::new(EditorMode::full(), buffer, None, window, cx)
22699    });
22700    let cx = &mut VisualTestContext::from_window(*window, cx);
22701
22702    let (buffer, snapshot) = window
22703        .update(cx, |editor, _window, cx| {
22704            (
22705                editor.buffer().clone(),
22706                editor.buffer().read(cx).snapshot(cx),
22707            )
22708        })
22709        .unwrap();
22710
22711    let edits = edits
22712        .into_iter()
22713        .map(|(range, edit)| {
22714            (
22715                snapshot.anchor_after(range.start)..snapshot.anchor_before(range.end),
22716                edit,
22717            )
22718        })
22719        .collect::<Vec<_>>();
22720
22721    let text_anchor_edits = edits
22722        .clone()
22723        .into_iter()
22724        .map(|(range, edit)| (range.start.text_anchor..range.end.text_anchor, edit))
22725        .collect::<Vec<_>>();
22726
22727    let edit_preview = window
22728        .update(cx, |_, _window, cx| {
22729            buffer
22730                .read(cx)
22731                .as_singleton()
22732                .unwrap()
22733                .read(cx)
22734                .preview_edits(text_anchor_edits.into(), cx)
22735        })
22736        .unwrap()
22737        .await;
22738
22739    cx.update(|_window, cx| {
22740        let highlighted_edits = edit_prediction_edit_text(
22741            snapshot.as_singleton().unwrap().2,
22742            &edits,
22743            &edit_preview,
22744            include_deletions,
22745            cx,
22746        );
22747        assertion_fn(highlighted_edits, cx)
22748    });
22749}
22750
22751#[track_caller]
22752fn assert_breakpoint(
22753    breakpoints: &BTreeMap<Arc<Path>, Vec<SourceBreakpoint>>,
22754    path: &Arc<Path>,
22755    expected: Vec<(u32, Breakpoint)>,
22756) {
22757    if expected.is_empty() {
22758        assert!(!breakpoints.contains_key(path), "{}", path.display());
22759    } else {
22760        let mut breakpoint = breakpoints
22761            .get(path)
22762            .unwrap()
22763            .iter()
22764            .map(|breakpoint| {
22765                (
22766                    breakpoint.row,
22767                    Breakpoint {
22768                        message: breakpoint.message.clone(),
22769                        state: breakpoint.state,
22770                        condition: breakpoint.condition.clone(),
22771                        hit_condition: breakpoint.hit_condition.clone(),
22772                    },
22773                )
22774            })
22775            .collect::<Vec<_>>();
22776
22777        breakpoint.sort_by_key(|(cached_position, _)| *cached_position);
22778
22779        assert_eq!(expected, breakpoint);
22780    }
22781}
22782
22783fn add_log_breakpoint_at_cursor(
22784    editor: &mut Editor,
22785    log_message: &str,
22786    window: &mut Window,
22787    cx: &mut Context<Editor>,
22788) {
22789    let (anchor, bp) = editor
22790        .breakpoints_at_cursors(window, cx)
22791        .first()
22792        .and_then(|(anchor, bp)| bp.as_ref().map(|bp| (*anchor, bp.clone())))
22793        .unwrap_or_else(|| {
22794            let snapshot = editor.snapshot(window, cx);
22795            let cursor_position: Point =
22796                editor.selections.newest(&snapshot.display_snapshot).head();
22797
22798            let breakpoint_position = snapshot
22799                .buffer_snapshot()
22800                .anchor_before(Point::new(cursor_position.row, 0));
22801
22802            (breakpoint_position, Breakpoint::new_log(log_message))
22803        });
22804
22805    editor.edit_breakpoint_at_anchor(
22806        anchor,
22807        bp,
22808        BreakpointEditAction::EditLogMessage(log_message.into()),
22809        cx,
22810    );
22811}
22812
22813#[gpui::test]
22814async fn test_breakpoint_toggling(cx: &mut TestAppContext) {
22815    init_test(cx, |_| {});
22816
22817    let sample_text = "First line\nSecond line\nThird line\nFourth line".to_string();
22818    let fs = FakeFs::new(cx.executor());
22819    fs.insert_tree(
22820        path!("/a"),
22821        json!({
22822            "main.rs": sample_text,
22823        }),
22824    )
22825    .await;
22826    let project = Project::test(fs, [path!("/a").as_ref()], cx).await;
22827    let workspace = cx.add_window(|window, cx| Workspace::test_new(project.clone(), window, cx));
22828    let cx = &mut VisualTestContext::from_window(*workspace.deref(), cx);
22829
22830    let fs = FakeFs::new(cx.executor());
22831    fs.insert_tree(
22832        path!("/a"),
22833        json!({
22834            "main.rs": sample_text,
22835        }),
22836    )
22837    .await;
22838    let project = Project::test(fs, [path!("/a").as_ref()], cx).await;
22839    let workspace = cx.add_window(|window, cx| Workspace::test_new(project.clone(), window, cx));
22840    let cx = &mut VisualTestContext::from_window(*workspace.deref(), cx);
22841    let worktree_id = workspace
22842        .update(cx, |workspace, _window, cx| {
22843            workspace.project().update(cx, |project, cx| {
22844                project.worktrees(cx).next().unwrap().read(cx).id()
22845            })
22846        })
22847        .unwrap();
22848
22849    let buffer = project
22850        .update(cx, |project, cx| {
22851            project.open_buffer((worktree_id, rel_path("main.rs")), cx)
22852        })
22853        .await
22854        .unwrap();
22855
22856    let (editor, cx) = cx.add_window_view(|window, cx| {
22857        Editor::new(
22858            EditorMode::full(),
22859            MultiBuffer::build_from_buffer(buffer, cx),
22860            Some(project.clone()),
22861            window,
22862            cx,
22863        )
22864    });
22865
22866    let project_path = editor.update(cx, |editor, cx| editor.project_path(cx).unwrap());
22867    let abs_path = project.read_with(cx, |project, cx| {
22868        project
22869            .absolute_path(&project_path, cx)
22870            .map(Arc::from)
22871            .unwrap()
22872    });
22873
22874    // assert we can add breakpoint on the first line
22875    editor.update_in(cx, |editor, window, cx| {
22876        editor.toggle_breakpoint(&actions::ToggleBreakpoint, window, cx);
22877        editor.move_to_end(&MoveToEnd, window, cx);
22878        editor.toggle_breakpoint(&actions::ToggleBreakpoint, window, cx);
22879    });
22880
22881    let breakpoints = editor.update(cx, |editor, cx| {
22882        editor
22883            .breakpoint_store()
22884            .as_ref()
22885            .unwrap()
22886            .read(cx)
22887            .all_source_breakpoints(cx)
22888    });
22889
22890    assert_eq!(1, breakpoints.len());
22891    assert_breakpoint(
22892        &breakpoints,
22893        &abs_path,
22894        vec![
22895            (0, Breakpoint::new_standard()),
22896            (3, Breakpoint::new_standard()),
22897        ],
22898    );
22899
22900    editor.update_in(cx, |editor, window, cx| {
22901        editor.move_to_beginning(&MoveToBeginning, window, cx);
22902        editor.toggle_breakpoint(&actions::ToggleBreakpoint, window, cx);
22903    });
22904
22905    let breakpoints = editor.update(cx, |editor, cx| {
22906        editor
22907            .breakpoint_store()
22908            .as_ref()
22909            .unwrap()
22910            .read(cx)
22911            .all_source_breakpoints(cx)
22912    });
22913
22914    assert_eq!(1, breakpoints.len());
22915    assert_breakpoint(
22916        &breakpoints,
22917        &abs_path,
22918        vec![(3, Breakpoint::new_standard())],
22919    );
22920
22921    editor.update_in(cx, |editor, window, cx| {
22922        editor.move_to_end(&MoveToEnd, window, cx);
22923        editor.toggle_breakpoint(&actions::ToggleBreakpoint, window, cx);
22924    });
22925
22926    let breakpoints = editor.update(cx, |editor, cx| {
22927        editor
22928            .breakpoint_store()
22929            .as_ref()
22930            .unwrap()
22931            .read(cx)
22932            .all_source_breakpoints(cx)
22933    });
22934
22935    assert_eq!(0, breakpoints.len());
22936    assert_breakpoint(&breakpoints, &abs_path, vec![]);
22937}
22938
22939#[gpui::test]
22940async fn test_log_breakpoint_editing(cx: &mut TestAppContext) {
22941    init_test(cx, |_| {});
22942
22943    let sample_text = "First line\nSecond line\nThird line\nFourth line".to_string();
22944
22945    let fs = FakeFs::new(cx.executor());
22946    fs.insert_tree(
22947        path!("/a"),
22948        json!({
22949            "main.rs": sample_text,
22950        }),
22951    )
22952    .await;
22953    let project = Project::test(fs, [path!("/a").as_ref()], cx).await;
22954    let (workspace, cx) =
22955        cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
22956
22957    let worktree_id = workspace.update(cx, |workspace, cx| {
22958        workspace.project().update(cx, |project, cx| {
22959            project.worktrees(cx).next().unwrap().read(cx).id()
22960        })
22961    });
22962
22963    let buffer = project
22964        .update(cx, |project, cx| {
22965            project.open_buffer((worktree_id, rel_path("main.rs")), cx)
22966        })
22967        .await
22968        .unwrap();
22969
22970    let (editor, cx) = cx.add_window_view(|window, cx| {
22971        Editor::new(
22972            EditorMode::full(),
22973            MultiBuffer::build_from_buffer(buffer, cx),
22974            Some(project.clone()),
22975            window,
22976            cx,
22977        )
22978    });
22979
22980    let project_path = editor.update(cx, |editor, cx| editor.project_path(cx).unwrap());
22981    let abs_path = project.read_with(cx, |project, cx| {
22982        project
22983            .absolute_path(&project_path, cx)
22984            .map(Arc::from)
22985            .unwrap()
22986    });
22987
22988    editor.update_in(cx, |editor, window, cx| {
22989        add_log_breakpoint_at_cursor(editor, "hello world", window, cx);
22990    });
22991
22992    let breakpoints = editor.update(cx, |editor, cx| {
22993        editor
22994            .breakpoint_store()
22995            .as_ref()
22996            .unwrap()
22997            .read(cx)
22998            .all_source_breakpoints(cx)
22999    });
23000
23001    assert_breakpoint(
23002        &breakpoints,
23003        &abs_path,
23004        vec![(0, Breakpoint::new_log("hello world"))],
23005    );
23006
23007    // Removing a log message from a log breakpoint should remove it
23008    editor.update_in(cx, |editor, window, cx| {
23009        add_log_breakpoint_at_cursor(editor, "", window, cx);
23010    });
23011
23012    let breakpoints = editor.update(cx, |editor, cx| {
23013        editor
23014            .breakpoint_store()
23015            .as_ref()
23016            .unwrap()
23017            .read(cx)
23018            .all_source_breakpoints(cx)
23019    });
23020
23021    assert_breakpoint(&breakpoints, &abs_path, vec![]);
23022
23023    editor.update_in(cx, |editor, window, cx| {
23024        editor.toggle_breakpoint(&actions::ToggleBreakpoint, window, cx);
23025        editor.move_to_end(&MoveToEnd, window, cx);
23026        editor.toggle_breakpoint(&actions::ToggleBreakpoint, window, cx);
23027        // Not adding a log message to a standard breakpoint shouldn't remove it
23028        add_log_breakpoint_at_cursor(editor, "", window, cx);
23029    });
23030
23031    let breakpoints = editor.update(cx, |editor, cx| {
23032        editor
23033            .breakpoint_store()
23034            .as_ref()
23035            .unwrap()
23036            .read(cx)
23037            .all_source_breakpoints(cx)
23038    });
23039
23040    assert_breakpoint(
23041        &breakpoints,
23042        &abs_path,
23043        vec![
23044            (0, Breakpoint::new_standard()),
23045            (3, Breakpoint::new_standard()),
23046        ],
23047    );
23048
23049    editor.update_in(cx, |editor, window, cx| {
23050        add_log_breakpoint_at_cursor(editor, "hello world", window, cx);
23051    });
23052
23053    let breakpoints = editor.update(cx, |editor, cx| {
23054        editor
23055            .breakpoint_store()
23056            .as_ref()
23057            .unwrap()
23058            .read(cx)
23059            .all_source_breakpoints(cx)
23060    });
23061
23062    assert_breakpoint(
23063        &breakpoints,
23064        &abs_path,
23065        vec![
23066            (0, Breakpoint::new_standard()),
23067            (3, Breakpoint::new_log("hello world")),
23068        ],
23069    );
23070
23071    editor.update_in(cx, |editor, window, cx| {
23072        add_log_breakpoint_at_cursor(editor, "hello Earth!!", window, cx);
23073    });
23074
23075    let breakpoints = editor.update(cx, |editor, cx| {
23076        editor
23077            .breakpoint_store()
23078            .as_ref()
23079            .unwrap()
23080            .read(cx)
23081            .all_source_breakpoints(cx)
23082    });
23083
23084    assert_breakpoint(
23085        &breakpoints,
23086        &abs_path,
23087        vec![
23088            (0, Breakpoint::new_standard()),
23089            (3, Breakpoint::new_log("hello Earth!!")),
23090        ],
23091    );
23092}
23093
23094/// This also tests that Editor::breakpoint_at_cursor_head is working properly
23095/// we had some issues where we wouldn't find a breakpoint at Point {row: 0, col: 0}
23096/// or when breakpoints were placed out of order. This tests for a regression too
23097#[gpui::test]
23098async fn test_breakpoint_enabling_and_disabling(cx: &mut TestAppContext) {
23099    init_test(cx, |_| {});
23100
23101    let sample_text = "First line\nSecond line\nThird line\nFourth line".to_string();
23102    let fs = FakeFs::new(cx.executor());
23103    fs.insert_tree(
23104        path!("/a"),
23105        json!({
23106            "main.rs": sample_text,
23107        }),
23108    )
23109    .await;
23110    let project = Project::test(fs, [path!("/a").as_ref()], cx).await;
23111    let workspace = cx.add_window(|window, cx| Workspace::test_new(project.clone(), window, cx));
23112    let cx = &mut VisualTestContext::from_window(*workspace.deref(), cx);
23113
23114    let fs = FakeFs::new(cx.executor());
23115    fs.insert_tree(
23116        path!("/a"),
23117        json!({
23118            "main.rs": sample_text,
23119        }),
23120    )
23121    .await;
23122    let project = Project::test(fs, [path!("/a").as_ref()], cx).await;
23123    let workspace = cx.add_window(|window, cx| Workspace::test_new(project.clone(), window, cx));
23124    let cx = &mut VisualTestContext::from_window(*workspace.deref(), cx);
23125    let worktree_id = workspace
23126        .update(cx, |workspace, _window, cx| {
23127            workspace.project().update(cx, |project, cx| {
23128                project.worktrees(cx).next().unwrap().read(cx).id()
23129            })
23130        })
23131        .unwrap();
23132
23133    let buffer = project
23134        .update(cx, |project, cx| {
23135            project.open_buffer((worktree_id, rel_path("main.rs")), cx)
23136        })
23137        .await
23138        .unwrap();
23139
23140    let (editor, cx) = cx.add_window_view(|window, cx| {
23141        Editor::new(
23142            EditorMode::full(),
23143            MultiBuffer::build_from_buffer(buffer, cx),
23144            Some(project.clone()),
23145            window,
23146            cx,
23147        )
23148    });
23149
23150    let project_path = editor.update(cx, |editor, cx| editor.project_path(cx).unwrap());
23151    let abs_path = project.read_with(cx, |project, cx| {
23152        project
23153            .absolute_path(&project_path, cx)
23154            .map(Arc::from)
23155            .unwrap()
23156    });
23157
23158    // assert we can add breakpoint on the first line
23159    editor.update_in(cx, |editor, window, cx| {
23160        editor.toggle_breakpoint(&actions::ToggleBreakpoint, window, cx);
23161        editor.move_to_end(&MoveToEnd, window, cx);
23162        editor.toggle_breakpoint(&actions::ToggleBreakpoint, window, cx);
23163        editor.move_up(&MoveUp, window, cx);
23164        editor.toggle_breakpoint(&actions::ToggleBreakpoint, window, cx);
23165    });
23166
23167    let breakpoints = editor.update(cx, |editor, cx| {
23168        editor
23169            .breakpoint_store()
23170            .as_ref()
23171            .unwrap()
23172            .read(cx)
23173            .all_source_breakpoints(cx)
23174    });
23175
23176    assert_eq!(1, breakpoints.len());
23177    assert_breakpoint(
23178        &breakpoints,
23179        &abs_path,
23180        vec![
23181            (0, Breakpoint::new_standard()),
23182            (2, Breakpoint::new_standard()),
23183            (3, Breakpoint::new_standard()),
23184        ],
23185    );
23186
23187    editor.update_in(cx, |editor, window, cx| {
23188        editor.move_to_beginning(&MoveToBeginning, window, cx);
23189        editor.disable_breakpoint(&actions::DisableBreakpoint, window, cx);
23190        editor.move_to_end(&MoveToEnd, window, cx);
23191        editor.disable_breakpoint(&actions::DisableBreakpoint, window, cx);
23192        // Disabling a breakpoint that doesn't exist should do nothing
23193        editor.move_up(&MoveUp, window, cx);
23194        editor.move_up(&MoveUp, window, cx);
23195        editor.disable_breakpoint(&actions::DisableBreakpoint, window, cx);
23196    });
23197
23198    let breakpoints = editor.update(cx, |editor, cx| {
23199        editor
23200            .breakpoint_store()
23201            .as_ref()
23202            .unwrap()
23203            .read(cx)
23204            .all_source_breakpoints(cx)
23205    });
23206
23207    let disable_breakpoint = {
23208        let mut bp = Breakpoint::new_standard();
23209        bp.state = BreakpointState::Disabled;
23210        bp
23211    };
23212
23213    assert_eq!(1, breakpoints.len());
23214    assert_breakpoint(
23215        &breakpoints,
23216        &abs_path,
23217        vec![
23218            (0, disable_breakpoint.clone()),
23219            (2, Breakpoint::new_standard()),
23220            (3, disable_breakpoint.clone()),
23221        ],
23222    );
23223
23224    editor.update_in(cx, |editor, window, cx| {
23225        editor.move_to_beginning(&MoveToBeginning, window, cx);
23226        editor.enable_breakpoint(&actions::EnableBreakpoint, window, cx);
23227        editor.move_to_end(&MoveToEnd, window, cx);
23228        editor.enable_breakpoint(&actions::EnableBreakpoint, window, cx);
23229        editor.move_up(&MoveUp, window, cx);
23230        editor.disable_breakpoint(&actions::DisableBreakpoint, window, cx);
23231    });
23232
23233    let breakpoints = editor.update(cx, |editor, cx| {
23234        editor
23235            .breakpoint_store()
23236            .as_ref()
23237            .unwrap()
23238            .read(cx)
23239            .all_source_breakpoints(cx)
23240    });
23241
23242    assert_eq!(1, breakpoints.len());
23243    assert_breakpoint(
23244        &breakpoints,
23245        &abs_path,
23246        vec![
23247            (0, Breakpoint::new_standard()),
23248            (2, disable_breakpoint),
23249            (3, Breakpoint::new_standard()),
23250        ],
23251    );
23252}
23253
23254#[gpui::test]
23255async fn test_rename_with_duplicate_edits(cx: &mut TestAppContext) {
23256    init_test(cx, |_| {});
23257    let capabilities = lsp::ServerCapabilities {
23258        rename_provider: Some(lsp::OneOf::Right(lsp::RenameOptions {
23259            prepare_provider: Some(true),
23260            work_done_progress_options: Default::default(),
23261        })),
23262        ..Default::default()
23263    };
23264    let mut cx = EditorLspTestContext::new_rust(capabilities, cx).await;
23265
23266    cx.set_state(indoc! {"
23267        struct Fˇoo {}
23268    "});
23269
23270    cx.update_editor(|editor, _, cx| {
23271        let highlight_range = Point::new(0, 7)..Point::new(0, 10);
23272        let highlight_range = highlight_range.to_anchors(&editor.buffer().read(cx).snapshot(cx));
23273        editor.highlight_background::<DocumentHighlightRead>(
23274            &[highlight_range],
23275            |theme| theme.colors().editor_document_highlight_read_background,
23276            cx,
23277        );
23278    });
23279
23280    let mut prepare_rename_handler = cx
23281        .set_request_handler::<lsp::request::PrepareRenameRequest, _, _>(
23282            move |_, _, _| async move {
23283                Ok(Some(lsp::PrepareRenameResponse::Range(lsp::Range {
23284                    start: lsp::Position {
23285                        line: 0,
23286                        character: 7,
23287                    },
23288                    end: lsp::Position {
23289                        line: 0,
23290                        character: 10,
23291                    },
23292                })))
23293            },
23294        );
23295    let prepare_rename_task = cx
23296        .update_editor(|e, window, cx| e.rename(&Rename, window, cx))
23297        .expect("Prepare rename was not started");
23298    prepare_rename_handler.next().await.unwrap();
23299    prepare_rename_task.await.expect("Prepare rename failed");
23300
23301    let mut rename_handler =
23302        cx.set_request_handler::<lsp::request::Rename, _, _>(move |url, _, _| async move {
23303            let edit = lsp::TextEdit {
23304                range: lsp::Range {
23305                    start: lsp::Position {
23306                        line: 0,
23307                        character: 7,
23308                    },
23309                    end: lsp::Position {
23310                        line: 0,
23311                        character: 10,
23312                    },
23313                },
23314                new_text: "FooRenamed".to_string(),
23315            };
23316            Ok(Some(lsp::WorkspaceEdit::new(
23317                // Specify the same edit twice
23318                std::collections::HashMap::from_iter(Some((url, vec![edit.clone(), edit]))),
23319            )))
23320        });
23321    let rename_task = cx
23322        .update_editor(|e, window, cx| e.confirm_rename(&ConfirmRename, window, cx))
23323        .expect("Confirm rename was not started");
23324    rename_handler.next().await.unwrap();
23325    rename_task.await.expect("Confirm rename failed");
23326    cx.run_until_parked();
23327
23328    // Despite two edits, only one is actually applied as those are identical
23329    cx.assert_editor_state(indoc! {"
23330        struct FooRenamedˇ {}
23331    "});
23332}
23333
23334#[gpui::test]
23335async fn test_rename_without_prepare(cx: &mut TestAppContext) {
23336    init_test(cx, |_| {});
23337    // These capabilities indicate that the server does not support prepare rename.
23338    let capabilities = lsp::ServerCapabilities {
23339        rename_provider: Some(lsp::OneOf::Left(true)),
23340        ..Default::default()
23341    };
23342    let mut cx = EditorLspTestContext::new_rust(capabilities, cx).await;
23343
23344    cx.set_state(indoc! {"
23345        struct Fˇoo {}
23346    "});
23347
23348    cx.update_editor(|editor, _window, cx| {
23349        let highlight_range = Point::new(0, 7)..Point::new(0, 10);
23350        let highlight_range = highlight_range.to_anchors(&editor.buffer().read(cx).snapshot(cx));
23351        editor.highlight_background::<DocumentHighlightRead>(
23352            &[highlight_range],
23353            |theme| theme.colors().editor_document_highlight_read_background,
23354            cx,
23355        );
23356    });
23357
23358    cx.update_editor(|e, window, cx| e.rename(&Rename, window, cx))
23359        .expect("Prepare rename was not started")
23360        .await
23361        .expect("Prepare rename failed");
23362
23363    let mut rename_handler =
23364        cx.set_request_handler::<lsp::request::Rename, _, _>(move |url, _, _| async move {
23365            let edit = lsp::TextEdit {
23366                range: lsp::Range {
23367                    start: lsp::Position {
23368                        line: 0,
23369                        character: 7,
23370                    },
23371                    end: lsp::Position {
23372                        line: 0,
23373                        character: 10,
23374                    },
23375                },
23376                new_text: "FooRenamed".to_string(),
23377            };
23378            Ok(Some(lsp::WorkspaceEdit::new(
23379                std::collections::HashMap::from_iter(Some((url, vec![edit]))),
23380            )))
23381        });
23382    let rename_task = cx
23383        .update_editor(|e, window, cx| e.confirm_rename(&ConfirmRename, window, cx))
23384        .expect("Confirm rename was not started");
23385    rename_handler.next().await.unwrap();
23386    rename_task.await.expect("Confirm rename failed");
23387    cx.run_until_parked();
23388
23389    // Correct range is renamed, as `surrounding_word` is used to find it.
23390    cx.assert_editor_state(indoc! {"
23391        struct FooRenamedˇ {}
23392    "});
23393}
23394
23395#[gpui::test]
23396async fn test_tree_sitter_brackets_newline_insertion(cx: &mut TestAppContext) {
23397    init_test(cx, |_| {});
23398    let mut cx = EditorTestContext::new(cx).await;
23399
23400    let language = Arc::new(
23401        Language::new(
23402            LanguageConfig::default(),
23403            Some(tree_sitter_html::LANGUAGE.into()),
23404        )
23405        .with_brackets_query(
23406            r#"
23407            ("<" @open "/>" @close)
23408            ("</" @open ">" @close)
23409            ("<" @open ">" @close)
23410            ("\"" @open "\"" @close)
23411            ((element (start_tag) @open (end_tag) @close) (#set! newline.only))
23412        "#,
23413        )
23414        .unwrap(),
23415    );
23416    cx.update_buffer(|buffer, cx| buffer.set_language(Some(language), cx));
23417
23418    cx.set_state(indoc! {"
23419        <span>ˇ</span>
23420    "});
23421    cx.update_editor(|e, window, cx| e.newline(&Newline, window, cx));
23422    cx.assert_editor_state(indoc! {"
23423        <span>
23424        ˇ
23425        </span>
23426    "});
23427
23428    cx.set_state(indoc! {"
23429        <span><span></span>ˇ</span>
23430    "});
23431    cx.update_editor(|e, window, cx| e.newline(&Newline, window, cx));
23432    cx.assert_editor_state(indoc! {"
23433        <span><span></span>
23434        ˇ</span>
23435    "});
23436
23437    cx.set_state(indoc! {"
23438        <span>ˇ
23439        </span>
23440    "});
23441    cx.update_editor(|e, window, cx| e.newline(&Newline, window, cx));
23442    cx.assert_editor_state(indoc! {"
23443        <span>
23444        ˇ
23445        </span>
23446    "});
23447}
23448
23449#[gpui::test(iterations = 10)]
23450async fn test_apply_code_lens_actions_with_commands(cx: &mut gpui::TestAppContext) {
23451    init_test(cx, |_| {});
23452
23453    let fs = FakeFs::new(cx.executor());
23454    fs.insert_tree(
23455        path!("/dir"),
23456        json!({
23457            "a.ts": "a",
23458        }),
23459    )
23460    .await;
23461
23462    let project = Project::test(fs, [path!("/dir").as_ref()], cx).await;
23463    let workspace = cx.add_window(|window, cx| Workspace::test_new(project.clone(), window, cx));
23464    let cx = &mut VisualTestContext::from_window(*workspace.deref(), cx);
23465
23466    let language_registry = project.read_with(cx, |project, _| project.languages().clone());
23467    language_registry.add(Arc::new(Language::new(
23468        LanguageConfig {
23469            name: "TypeScript".into(),
23470            matcher: LanguageMatcher {
23471                path_suffixes: vec!["ts".to_string()],
23472                ..Default::default()
23473            },
23474            ..Default::default()
23475        },
23476        Some(tree_sitter_typescript::LANGUAGE_TYPESCRIPT.into()),
23477    )));
23478    let mut fake_language_servers = language_registry.register_fake_lsp(
23479        "TypeScript",
23480        FakeLspAdapter {
23481            capabilities: lsp::ServerCapabilities {
23482                code_lens_provider: Some(lsp::CodeLensOptions {
23483                    resolve_provider: Some(true),
23484                }),
23485                execute_command_provider: Some(lsp::ExecuteCommandOptions {
23486                    commands: vec!["_the/command".to_string()],
23487                    ..lsp::ExecuteCommandOptions::default()
23488                }),
23489                ..lsp::ServerCapabilities::default()
23490            },
23491            ..FakeLspAdapter::default()
23492        },
23493    );
23494
23495    let editor = workspace
23496        .update(cx, |workspace, window, cx| {
23497            workspace.open_abs_path(
23498                PathBuf::from(path!("/dir/a.ts")),
23499                OpenOptions::default(),
23500                window,
23501                cx,
23502            )
23503        })
23504        .unwrap()
23505        .await
23506        .unwrap()
23507        .downcast::<Editor>()
23508        .unwrap();
23509    cx.executor().run_until_parked();
23510
23511    let fake_server = fake_language_servers.next().await.unwrap();
23512
23513    let buffer = editor.update(cx, |editor, cx| {
23514        editor
23515            .buffer()
23516            .read(cx)
23517            .as_singleton()
23518            .expect("have opened a single file by path")
23519    });
23520
23521    let buffer_snapshot = buffer.update(cx, |buffer, _| buffer.snapshot());
23522    let anchor = buffer_snapshot.anchor_at(0, text::Bias::Left);
23523    drop(buffer_snapshot);
23524    let actions = cx
23525        .update_window(*workspace, |_, window, cx| {
23526            project.code_actions(&buffer, anchor..anchor, window, cx)
23527        })
23528        .unwrap();
23529
23530    fake_server
23531        .set_request_handler::<lsp::request::CodeLensRequest, _, _>(|_, _| async move {
23532            Ok(Some(vec![
23533                lsp::CodeLens {
23534                    range: lsp::Range::default(),
23535                    command: Some(lsp::Command {
23536                        title: "Code lens command".to_owned(),
23537                        command: "_the/command".to_owned(),
23538                        arguments: None,
23539                    }),
23540                    data: None,
23541                },
23542                lsp::CodeLens {
23543                    range: lsp::Range::default(),
23544                    command: Some(lsp::Command {
23545                        title: "Command not in capabilities".to_owned(),
23546                        command: "not in capabilities".to_owned(),
23547                        arguments: None,
23548                    }),
23549                    data: None,
23550                },
23551                lsp::CodeLens {
23552                    range: lsp::Range {
23553                        start: lsp::Position {
23554                            line: 1,
23555                            character: 1,
23556                        },
23557                        end: lsp::Position {
23558                            line: 1,
23559                            character: 1,
23560                        },
23561                    },
23562                    command: Some(lsp::Command {
23563                        title: "Command not in range".to_owned(),
23564                        command: "_the/command".to_owned(),
23565                        arguments: None,
23566                    }),
23567                    data: None,
23568                },
23569            ]))
23570        })
23571        .next()
23572        .await;
23573
23574    let actions = actions.await.unwrap();
23575    assert_eq!(
23576        actions.len(),
23577        1,
23578        "Should have only one valid action for the 0..0 range, got: {actions:#?}"
23579    );
23580    let action = actions[0].clone();
23581    let apply = project.update(cx, |project, cx| {
23582        project.apply_code_action(buffer.clone(), action, true, cx)
23583    });
23584
23585    // Resolving the code action does not populate its edits. In absence of
23586    // edits, we must execute the given command.
23587    fake_server.set_request_handler::<lsp::request::CodeLensResolve, _, _>(
23588        |mut lens, _| async move {
23589            let lens_command = lens.command.as_mut().expect("should have a command");
23590            assert_eq!(lens_command.title, "Code lens command");
23591            lens_command.arguments = Some(vec![json!("the-argument")]);
23592            Ok(lens)
23593        },
23594    );
23595
23596    // While executing the command, the language server sends the editor
23597    // a `workspaceEdit` request.
23598    fake_server
23599        .set_request_handler::<lsp::request::ExecuteCommand, _, _>({
23600            let fake = fake_server.clone();
23601            move |params, _| {
23602                assert_eq!(params.command, "_the/command");
23603                let fake = fake.clone();
23604                async move {
23605                    fake.server
23606                        .request::<lsp::request::ApplyWorkspaceEdit>(
23607                            lsp::ApplyWorkspaceEditParams {
23608                                label: None,
23609                                edit: lsp::WorkspaceEdit {
23610                                    changes: Some(
23611                                        [(
23612                                            lsp::Uri::from_file_path(path!("/dir/a.ts")).unwrap(),
23613                                            vec![lsp::TextEdit {
23614                                                range: lsp::Range::new(
23615                                                    lsp::Position::new(0, 0),
23616                                                    lsp::Position::new(0, 0),
23617                                                ),
23618                                                new_text: "X".into(),
23619                                            }],
23620                                        )]
23621                                        .into_iter()
23622                                        .collect(),
23623                                    ),
23624                                    ..lsp::WorkspaceEdit::default()
23625                                },
23626                            },
23627                        )
23628                        .await
23629                        .into_response()
23630                        .unwrap();
23631                    Ok(Some(json!(null)))
23632                }
23633            }
23634        })
23635        .next()
23636        .await;
23637
23638    // Applying the code lens command returns a project transaction containing the edits
23639    // sent by the language server in its `workspaceEdit` request.
23640    let transaction = apply.await.unwrap();
23641    assert!(transaction.0.contains_key(&buffer));
23642    buffer.update(cx, |buffer, cx| {
23643        assert_eq!(buffer.text(), "Xa");
23644        buffer.undo(cx);
23645        assert_eq!(buffer.text(), "a");
23646    });
23647
23648    let actions_after_edits = cx
23649        .update_window(*workspace, |_, window, cx| {
23650            project.code_actions(&buffer, anchor..anchor, window, cx)
23651        })
23652        .unwrap()
23653        .await
23654        .unwrap();
23655    assert_eq!(
23656        actions, actions_after_edits,
23657        "For the same selection, same code lens actions should be returned"
23658    );
23659
23660    let _responses =
23661        fake_server.set_request_handler::<lsp::request::CodeLensRequest, _, _>(|_, _| async move {
23662            panic!("No more code lens requests are expected");
23663        });
23664    editor.update_in(cx, |editor, window, cx| {
23665        editor.select_all(&SelectAll, window, cx);
23666    });
23667    cx.executor().run_until_parked();
23668    let new_actions = cx
23669        .update_window(*workspace, |_, window, cx| {
23670            project.code_actions(&buffer, anchor..anchor, window, cx)
23671        })
23672        .unwrap()
23673        .await
23674        .unwrap();
23675    assert_eq!(
23676        actions, new_actions,
23677        "Code lens are queried for the same range and should get the same set back, but without additional LSP queries now"
23678    );
23679}
23680
23681#[gpui::test]
23682async fn test_editor_restore_data_different_in_panes(cx: &mut TestAppContext) {
23683    init_test(cx, |_| {});
23684
23685    let fs = FakeFs::new(cx.executor());
23686    let main_text = r#"fn main() {
23687println!("1");
23688println!("2");
23689println!("3");
23690println!("4");
23691println!("5");
23692}"#;
23693    let lib_text = "mod foo {}";
23694    fs.insert_tree(
23695        path!("/a"),
23696        json!({
23697            "lib.rs": lib_text,
23698            "main.rs": main_text,
23699        }),
23700    )
23701    .await;
23702
23703    let project = Project::test(fs, [path!("/a").as_ref()], cx).await;
23704    let (workspace, cx) =
23705        cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
23706    let worktree_id = workspace.update(cx, |workspace, cx| {
23707        workspace.project().update(cx, |project, cx| {
23708            project.worktrees(cx).next().unwrap().read(cx).id()
23709        })
23710    });
23711
23712    let expected_ranges = vec![
23713        Point::new(0, 0)..Point::new(0, 0),
23714        Point::new(1, 0)..Point::new(1, 1),
23715        Point::new(2, 0)..Point::new(2, 2),
23716        Point::new(3, 0)..Point::new(3, 3),
23717    ];
23718
23719    let pane_1 = workspace.update(cx, |workspace, _| workspace.active_pane().clone());
23720    let editor_1 = workspace
23721        .update_in(cx, |workspace, window, cx| {
23722            workspace.open_path(
23723                (worktree_id, rel_path("main.rs")),
23724                Some(pane_1.downgrade()),
23725                true,
23726                window,
23727                cx,
23728            )
23729        })
23730        .unwrap()
23731        .await
23732        .downcast::<Editor>()
23733        .unwrap();
23734    pane_1.update(cx, |pane, cx| {
23735        let open_editor = pane.active_item().unwrap().downcast::<Editor>().unwrap();
23736        open_editor.update(cx, |editor, cx| {
23737            assert_eq!(
23738                editor.display_text(cx),
23739                main_text,
23740                "Original main.rs text on initial open",
23741            );
23742            assert_eq!(
23743                editor
23744                    .selections
23745                    .all::<Point>(&editor.display_snapshot(cx))
23746                    .into_iter()
23747                    .map(|s| s.range())
23748                    .collect::<Vec<_>>(),
23749                vec![Point::zero()..Point::zero()],
23750                "Default selections on initial open",
23751            );
23752        })
23753    });
23754    editor_1.update_in(cx, |editor, window, cx| {
23755        editor.change_selections(SelectionEffects::no_scroll(), window, cx, |s| {
23756            s.select_ranges(expected_ranges.clone());
23757        });
23758    });
23759
23760    let pane_2 = workspace.update_in(cx, |workspace, window, cx| {
23761        workspace.split_pane(pane_1.clone(), SplitDirection::Right, window, cx)
23762    });
23763    let editor_2 = workspace
23764        .update_in(cx, |workspace, window, cx| {
23765            workspace.open_path(
23766                (worktree_id, rel_path("main.rs")),
23767                Some(pane_2.downgrade()),
23768                true,
23769                window,
23770                cx,
23771            )
23772        })
23773        .unwrap()
23774        .await
23775        .downcast::<Editor>()
23776        .unwrap();
23777    pane_2.update(cx, |pane, cx| {
23778        let open_editor = pane.active_item().unwrap().downcast::<Editor>().unwrap();
23779        open_editor.update(cx, |editor, cx| {
23780            assert_eq!(
23781                editor.display_text(cx),
23782                main_text,
23783                "Original main.rs text on initial open in another panel",
23784            );
23785            assert_eq!(
23786                editor
23787                    .selections
23788                    .all::<Point>(&editor.display_snapshot(cx))
23789                    .into_iter()
23790                    .map(|s| s.range())
23791                    .collect::<Vec<_>>(),
23792                vec![Point::zero()..Point::zero()],
23793                "Default selections on initial open in another panel",
23794            );
23795        })
23796    });
23797
23798    editor_2.update_in(cx, |editor, window, cx| {
23799        editor.fold_ranges(expected_ranges.clone(), false, window, cx);
23800    });
23801
23802    let _other_editor_1 = workspace
23803        .update_in(cx, |workspace, window, cx| {
23804            workspace.open_path(
23805                (worktree_id, rel_path("lib.rs")),
23806                Some(pane_1.downgrade()),
23807                true,
23808                window,
23809                cx,
23810            )
23811        })
23812        .unwrap()
23813        .await
23814        .downcast::<Editor>()
23815        .unwrap();
23816    pane_1
23817        .update_in(cx, |pane, window, cx| {
23818            pane.close_other_items(&CloseOtherItems::default(), None, window, cx)
23819        })
23820        .await
23821        .unwrap();
23822    drop(editor_1);
23823    pane_1.update(cx, |pane, cx| {
23824        pane.active_item()
23825            .unwrap()
23826            .downcast::<Editor>()
23827            .unwrap()
23828            .update(cx, |editor, cx| {
23829                assert_eq!(
23830                    editor.display_text(cx),
23831                    lib_text,
23832                    "Other file should be open and active",
23833                );
23834            });
23835        assert_eq!(pane.items().count(), 1, "No other editors should be open");
23836    });
23837
23838    let _other_editor_2 = workspace
23839        .update_in(cx, |workspace, window, cx| {
23840            workspace.open_path(
23841                (worktree_id, rel_path("lib.rs")),
23842                Some(pane_2.downgrade()),
23843                true,
23844                window,
23845                cx,
23846            )
23847        })
23848        .unwrap()
23849        .await
23850        .downcast::<Editor>()
23851        .unwrap();
23852    pane_2
23853        .update_in(cx, |pane, window, cx| {
23854            pane.close_other_items(&CloseOtherItems::default(), None, window, cx)
23855        })
23856        .await
23857        .unwrap();
23858    drop(editor_2);
23859    pane_2.update(cx, |pane, cx| {
23860        let open_editor = pane.active_item().unwrap().downcast::<Editor>().unwrap();
23861        open_editor.update(cx, |editor, cx| {
23862            assert_eq!(
23863                editor.display_text(cx),
23864                lib_text,
23865                "Other file should be open and active in another panel too",
23866            );
23867        });
23868        assert_eq!(
23869            pane.items().count(),
23870            1,
23871            "No other editors should be open in another pane",
23872        );
23873    });
23874
23875    let _editor_1_reopened = workspace
23876        .update_in(cx, |workspace, window, cx| {
23877            workspace.open_path(
23878                (worktree_id, rel_path("main.rs")),
23879                Some(pane_1.downgrade()),
23880                true,
23881                window,
23882                cx,
23883            )
23884        })
23885        .unwrap()
23886        .await
23887        .downcast::<Editor>()
23888        .unwrap();
23889    let _editor_2_reopened = workspace
23890        .update_in(cx, |workspace, window, cx| {
23891            workspace.open_path(
23892                (worktree_id, rel_path("main.rs")),
23893                Some(pane_2.downgrade()),
23894                true,
23895                window,
23896                cx,
23897            )
23898        })
23899        .unwrap()
23900        .await
23901        .downcast::<Editor>()
23902        .unwrap();
23903    pane_1.update(cx, |pane, cx| {
23904        let open_editor = pane.active_item().unwrap().downcast::<Editor>().unwrap();
23905        open_editor.update(cx, |editor, cx| {
23906            assert_eq!(
23907                editor.display_text(cx),
23908                main_text,
23909                "Previous editor in the 1st panel had no extra text manipulations and should get none on reopen",
23910            );
23911            assert_eq!(
23912                editor
23913                    .selections
23914                    .all::<Point>(&editor.display_snapshot(cx))
23915                    .into_iter()
23916                    .map(|s| s.range())
23917                    .collect::<Vec<_>>(),
23918                expected_ranges,
23919                "Previous editor in the 1st panel had selections and should get them restored on reopen",
23920            );
23921        })
23922    });
23923    pane_2.update(cx, |pane, cx| {
23924        let open_editor = pane.active_item().unwrap().downcast::<Editor>().unwrap();
23925        open_editor.update(cx, |editor, cx| {
23926            assert_eq!(
23927                editor.display_text(cx),
23928                r#"fn main() {
23929⋯rintln!("1");
23930⋯intln!("2");
23931⋯ntln!("3");
23932println!("4");
23933println!("5");
23934}"#,
23935                "Previous editor in the 2nd pane had folds and should restore those on reopen in the same pane",
23936            );
23937            assert_eq!(
23938                editor
23939                    .selections
23940                    .all::<Point>(&editor.display_snapshot(cx))
23941                    .into_iter()
23942                    .map(|s| s.range())
23943                    .collect::<Vec<_>>(),
23944                vec![Point::zero()..Point::zero()],
23945                "Previous editor in the 2nd pane had no selections changed hence should restore none",
23946            );
23947        })
23948    });
23949}
23950
23951#[gpui::test]
23952async fn test_editor_does_not_restore_data_when_turned_off(cx: &mut TestAppContext) {
23953    init_test(cx, |_| {});
23954
23955    let fs = FakeFs::new(cx.executor());
23956    let main_text = r#"fn main() {
23957println!("1");
23958println!("2");
23959println!("3");
23960println!("4");
23961println!("5");
23962}"#;
23963    let lib_text = "mod foo {}";
23964    fs.insert_tree(
23965        path!("/a"),
23966        json!({
23967            "lib.rs": lib_text,
23968            "main.rs": main_text,
23969        }),
23970    )
23971    .await;
23972
23973    let project = Project::test(fs, [path!("/a").as_ref()], cx).await;
23974    let (workspace, cx) =
23975        cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
23976    let worktree_id = workspace.update(cx, |workspace, cx| {
23977        workspace.project().update(cx, |project, cx| {
23978            project.worktrees(cx).next().unwrap().read(cx).id()
23979        })
23980    });
23981
23982    let pane = workspace.update(cx, |workspace, _| workspace.active_pane().clone());
23983    let editor = workspace
23984        .update_in(cx, |workspace, window, cx| {
23985            workspace.open_path(
23986                (worktree_id, rel_path("main.rs")),
23987                Some(pane.downgrade()),
23988                true,
23989                window,
23990                cx,
23991            )
23992        })
23993        .unwrap()
23994        .await
23995        .downcast::<Editor>()
23996        .unwrap();
23997    pane.update(cx, |pane, cx| {
23998        let open_editor = pane.active_item().unwrap().downcast::<Editor>().unwrap();
23999        open_editor.update(cx, |editor, cx| {
24000            assert_eq!(
24001                editor.display_text(cx),
24002                main_text,
24003                "Original main.rs text on initial open",
24004            );
24005        })
24006    });
24007    editor.update_in(cx, |editor, window, cx| {
24008        editor.fold_ranges(vec![Point::new(0, 0)..Point::new(0, 0)], false, window, cx);
24009    });
24010
24011    cx.update_global(|store: &mut SettingsStore, cx| {
24012        store.update_user_settings(cx, |s| {
24013            s.workspace.restore_on_file_reopen = Some(false);
24014        });
24015    });
24016    editor.update_in(cx, |editor, window, cx| {
24017        editor.fold_ranges(
24018            vec![
24019                Point::new(1, 0)..Point::new(1, 1),
24020                Point::new(2, 0)..Point::new(2, 2),
24021                Point::new(3, 0)..Point::new(3, 3),
24022            ],
24023            false,
24024            window,
24025            cx,
24026        );
24027    });
24028    pane.update_in(cx, |pane, window, cx| {
24029        pane.close_all_items(&CloseAllItems::default(), window, cx)
24030    })
24031    .await
24032    .unwrap();
24033    pane.update(cx, |pane, _| {
24034        assert!(pane.active_item().is_none());
24035    });
24036    cx.update_global(|store: &mut SettingsStore, cx| {
24037        store.update_user_settings(cx, |s| {
24038            s.workspace.restore_on_file_reopen = Some(true);
24039        });
24040    });
24041
24042    let _editor_reopened = workspace
24043        .update_in(cx, |workspace, window, cx| {
24044            workspace.open_path(
24045                (worktree_id, rel_path("main.rs")),
24046                Some(pane.downgrade()),
24047                true,
24048                window,
24049                cx,
24050            )
24051        })
24052        .unwrap()
24053        .await
24054        .downcast::<Editor>()
24055        .unwrap();
24056    pane.update(cx, |pane, cx| {
24057        let open_editor = pane.active_item().unwrap().downcast::<Editor>().unwrap();
24058        open_editor.update(cx, |editor, cx| {
24059            assert_eq!(
24060                editor.display_text(cx),
24061                main_text,
24062                "No folds: even after enabling the restoration, previous editor's data should not be saved to be used for the restoration"
24063            );
24064        })
24065    });
24066}
24067
24068#[gpui::test]
24069async fn test_hide_mouse_context_menu_on_modal_opened(cx: &mut TestAppContext) {
24070    struct EmptyModalView {
24071        focus_handle: gpui::FocusHandle,
24072    }
24073    impl EventEmitter<DismissEvent> for EmptyModalView {}
24074    impl Render for EmptyModalView {
24075        fn render(&mut self, _: &mut Window, _: &mut Context<'_, Self>) -> impl IntoElement {
24076            div()
24077        }
24078    }
24079    impl Focusable for EmptyModalView {
24080        fn focus_handle(&self, _cx: &App) -> gpui::FocusHandle {
24081            self.focus_handle.clone()
24082        }
24083    }
24084    impl workspace::ModalView for EmptyModalView {}
24085    fn new_empty_modal_view(cx: &App) -> EmptyModalView {
24086        EmptyModalView {
24087            focus_handle: cx.focus_handle(),
24088        }
24089    }
24090
24091    init_test(cx, |_| {});
24092
24093    let fs = FakeFs::new(cx.executor());
24094    let project = Project::test(fs, [], cx).await;
24095    let workspace = cx.add_window(|window, cx| Workspace::test_new(project.clone(), window, cx));
24096    let buffer = cx.update(|cx| MultiBuffer::build_simple("hello world!", cx));
24097    let cx = &mut VisualTestContext::from_window(*workspace.deref(), cx);
24098    let editor = cx.new_window_entity(|window, cx| {
24099        Editor::new(
24100            EditorMode::full(),
24101            buffer,
24102            Some(project.clone()),
24103            window,
24104            cx,
24105        )
24106    });
24107    workspace
24108        .update(cx, |workspace, window, cx| {
24109            workspace.add_item_to_active_pane(Box::new(editor.clone()), None, true, window, cx);
24110        })
24111        .unwrap();
24112    editor.update_in(cx, |editor, window, cx| {
24113        editor.open_context_menu(&OpenContextMenu, window, cx);
24114        assert!(editor.mouse_context_menu.is_some());
24115    });
24116    workspace
24117        .update(cx, |workspace, window, cx| {
24118            workspace.toggle_modal(window, cx, |_, cx| new_empty_modal_view(cx));
24119        })
24120        .unwrap();
24121    cx.read(|cx| {
24122        assert!(editor.read(cx).mouse_context_menu.is_none());
24123    });
24124}
24125
24126fn set_linked_edit_ranges(
24127    opening: (Point, Point),
24128    closing: (Point, Point),
24129    editor: &mut Editor,
24130    cx: &mut Context<Editor>,
24131) {
24132    let Some((buffer, _)) = editor
24133        .buffer
24134        .read(cx)
24135        .text_anchor_for_position(editor.selections.newest_anchor().start, cx)
24136    else {
24137        panic!("Failed to get buffer for selection position");
24138    };
24139    let buffer = buffer.read(cx);
24140    let buffer_id = buffer.remote_id();
24141    let opening_range = buffer.anchor_before(opening.0)..buffer.anchor_after(opening.1);
24142    let closing_range = buffer.anchor_before(closing.0)..buffer.anchor_after(closing.1);
24143    let mut linked_ranges = HashMap::default();
24144    linked_ranges.insert(buffer_id, vec![(opening_range, vec![closing_range])]);
24145    editor.linked_edit_ranges = LinkedEditingRanges(linked_ranges);
24146}
24147
24148#[gpui::test]
24149async fn test_html_linked_edits_on_completion(cx: &mut TestAppContext) {
24150    init_test(cx, |_| {});
24151
24152    let fs = FakeFs::new(cx.executor());
24153    fs.insert_file(path!("/file.html"), Default::default())
24154        .await;
24155
24156    let project = Project::test(fs, [path!("/").as_ref()], cx).await;
24157
24158    let language_registry = project.read_with(cx, |project, _| project.languages().clone());
24159    let html_language = Arc::new(Language::new(
24160        LanguageConfig {
24161            name: "HTML".into(),
24162            matcher: LanguageMatcher {
24163                path_suffixes: vec!["html".to_string()],
24164                ..LanguageMatcher::default()
24165            },
24166            brackets: BracketPairConfig {
24167                pairs: vec![BracketPair {
24168                    start: "<".into(),
24169                    end: ">".into(),
24170                    close: true,
24171                    ..Default::default()
24172                }],
24173                ..Default::default()
24174            },
24175            ..Default::default()
24176        },
24177        Some(tree_sitter_html::LANGUAGE.into()),
24178    ));
24179    language_registry.add(html_language);
24180    let mut fake_servers = language_registry.register_fake_lsp(
24181        "HTML",
24182        FakeLspAdapter {
24183            capabilities: lsp::ServerCapabilities {
24184                completion_provider: Some(lsp::CompletionOptions {
24185                    resolve_provider: Some(true),
24186                    ..Default::default()
24187                }),
24188                ..Default::default()
24189            },
24190            ..Default::default()
24191        },
24192    );
24193
24194    let workspace = cx.add_window(|window, cx| Workspace::test_new(project.clone(), window, cx));
24195    let cx = &mut VisualTestContext::from_window(*workspace, cx);
24196
24197    let worktree_id = workspace
24198        .update(cx, |workspace, _window, cx| {
24199            workspace.project().update(cx, |project, cx| {
24200                project.worktrees(cx).next().unwrap().read(cx).id()
24201            })
24202        })
24203        .unwrap();
24204    project
24205        .update(cx, |project, cx| {
24206            project.open_local_buffer_with_lsp(path!("/file.html"), cx)
24207        })
24208        .await
24209        .unwrap();
24210    let editor = workspace
24211        .update(cx, |workspace, window, cx| {
24212            workspace.open_path((worktree_id, rel_path("file.html")), None, true, window, cx)
24213        })
24214        .unwrap()
24215        .await
24216        .unwrap()
24217        .downcast::<Editor>()
24218        .unwrap();
24219
24220    let fake_server = fake_servers.next().await.unwrap();
24221    editor.update_in(cx, |editor, window, cx| {
24222        editor.set_text("<ad></ad>", window, cx);
24223        editor.change_selections(SelectionEffects::no_scroll(), window, cx, |selections| {
24224            selections.select_ranges([Point::new(0, 3)..Point::new(0, 3)]);
24225        });
24226        set_linked_edit_ranges(
24227            (Point::new(0, 1), Point::new(0, 3)),
24228            (Point::new(0, 6), Point::new(0, 8)),
24229            editor,
24230            cx,
24231        );
24232    });
24233    let mut completion_handle =
24234        fake_server.set_request_handler::<lsp::request::Completion, _, _>(move |_, _| async move {
24235            Ok(Some(lsp::CompletionResponse::Array(vec![
24236                lsp::CompletionItem {
24237                    label: "head".to_string(),
24238                    text_edit: Some(lsp::CompletionTextEdit::InsertAndReplace(
24239                        lsp::InsertReplaceEdit {
24240                            new_text: "head".to_string(),
24241                            insert: lsp::Range::new(
24242                                lsp::Position::new(0, 1),
24243                                lsp::Position::new(0, 3),
24244                            ),
24245                            replace: lsp::Range::new(
24246                                lsp::Position::new(0, 1),
24247                                lsp::Position::new(0, 3),
24248                            ),
24249                        },
24250                    )),
24251                    ..Default::default()
24252                },
24253            ])))
24254        });
24255    editor.update_in(cx, |editor, window, cx| {
24256        editor.show_completions(&ShowCompletions { trigger: None }, window, cx);
24257    });
24258    cx.run_until_parked();
24259    completion_handle.next().await.unwrap();
24260    editor.update(cx, |editor, _| {
24261        assert!(
24262            editor.context_menu_visible(),
24263            "Completion menu should be visible"
24264        );
24265    });
24266    editor.update_in(cx, |editor, window, cx| {
24267        editor.confirm_completion(&ConfirmCompletion::default(), window, cx)
24268    });
24269    cx.executor().run_until_parked();
24270    editor.update(cx, |editor, cx| {
24271        assert_eq!(editor.text(cx), "<head></head>");
24272    });
24273}
24274
24275#[gpui::test]
24276async fn test_linked_edits_on_typing_punctuation(cx: &mut TestAppContext) {
24277    init_test(cx, |_| {});
24278
24279    let mut cx = EditorTestContext::new(cx).await;
24280    let language = Arc::new(Language::new(
24281        LanguageConfig {
24282            name: "TSX".into(),
24283            matcher: LanguageMatcher {
24284                path_suffixes: vec!["tsx".to_string()],
24285                ..LanguageMatcher::default()
24286            },
24287            brackets: BracketPairConfig {
24288                pairs: vec![BracketPair {
24289                    start: "<".into(),
24290                    end: ">".into(),
24291                    close: true,
24292                    ..Default::default()
24293                }],
24294                ..Default::default()
24295            },
24296            linked_edit_characters: HashSet::from_iter(['.']),
24297            ..Default::default()
24298        },
24299        Some(tree_sitter_typescript::LANGUAGE_TSX.into()),
24300    ));
24301    cx.update_buffer(|buffer, cx| buffer.set_language(Some(language), cx));
24302
24303    // Test typing > does not extend linked pair
24304    cx.set_state("<divˇ<div></div>");
24305    cx.update_editor(|editor, _, cx| {
24306        set_linked_edit_ranges(
24307            (Point::new(0, 1), Point::new(0, 4)),
24308            (Point::new(0, 11), Point::new(0, 14)),
24309            editor,
24310            cx,
24311        );
24312    });
24313    cx.update_editor(|editor, window, cx| {
24314        editor.handle_input(">", window, cx);
24315    });
24316    cx.assert_editor_state("<div>ˇ<div></div>");
24317
24318    // Test typing . do extend linked pair
24319    cx.set_state("<Animatedˇ></Animated>");
24320    cx.update_editor(|editor, _, cx| {
24321        set_linked_edit_ranges(
24322            (Point::new(0, 1), Point::new(0, 9)),
24323            (Point::new(0, 12), Point::new(0, 20)),
24324            editor,
24325            cx,
24326        );
24327    });
24328    cx.update_editor(|editor, window, cx| {
24329        editor.handle_input(".", window, cx);
24330    });
24331    cx.assert_editor_state("<Animated.ˇ></Animated.>");
24332    cx.update_editor(|editor, _, cx| {
24333        set_linked_edit_ranges(
24334            (Point::new(0, 1), Point::new(0, 10)),
24335            (Point::new(0, 13), Point::new(0, 21)),
24336            editor,
24337            cx,
24338        );
24339    });
24340    cx.update_editor(|editor, window, cx| {
24341        editor.handle_input("V", window, cx);
24342    });
24343    cx.assert_editor_state("<Animated.Vˇ></Animated.V>");
24344}
24345
24346#[gpui::test]
24347async fn test_invisible_worktree_servers(cx: &mut TestAppContext) {
24348    init_test(cx, |_| {});
24349
24350    let fs = FakeFs::new(cx.executor());
24351    fs.insert_tree(
24352        path!("/root"),
24353        json!({
24354            "a": {
24355                "main.rs": "fn main() {}",
24356            },
24357            "foo": {
24358                "bar": {
24359                    "external_file.rs": "pub mod external {}",
24360                }
24361            }
24362        }),
24363    )
24364    .await;
24365
24366    let project = Project::test(fs, [path!("/root/a").as_ref()], cx).await;
24367    let language_registry = project.read_with(cx, |project, _| project.languages().clone());
24368    language_registry.add(rust_lang());
24369    let _fake_servers = language_registry.register_fake_lsp(
24370        "Rust",
24371        FakeLspAdapter {
24372            ..FakeLspAdapter::default()
24373        },
24374    );
24375    let (workspace, cx) =
24376        cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
24377    let worktree_id = workspace.update(cx, |workspace, cx| {
24378        workspace.project().update(cx, |project, cx| {
24379            project.worktrees(cx).next().unwrap().read(cx).id()
24380        })
24381    });
24382
24383    let assert_language_servers_count =
24384        |expected: usize, context: &str, cx: &mut VisualTestContext| {
24385            project.update(cx, |project, cx| {
24386                let current = project
24387                    .lsp_store()
24388                    .read(cx)
24389                    .as_local()
24390                    .unwrap()
24391                    .language_servers
24392                    .len();
24393                assert_eq!(expected, current, "{context}");
24394            });
24395        };
24396
24397    assert_language_servers_count(
24398        0,
24399        "No servers should be running before any file is open",
24400        cx,
24401    );
24402    let pane = workspace.update(cx, |workspace, _| workspace.active_pane().clone());
24403    let main_editor = workspace
24404        .update_in(cx, |workspace, window, cx| {
24405            workspace.open_path(
24406                (worktree_id, rel_path("main.rs")),
24407                Some(pane.downgrade()),
24408                true,
24409                window,
24410                cx,
24411            )
24412        })
24413        .unwrap()
24414        .await
24415        .downcast::<Editor>()
24416        .unwrap();
24417    pane.update(cx, |pane, cx| {
24418        let open_editor = pane.active_item().unwrap().downcast::<Editor>().unwrap();
24419        open_editor.update(cx, |editor, cx| {
24420            assert_eq!(
24421                editor.display_text(cx),
24422                "fn main() {}",
24423                "Original main.rs text on initial open",
24424            );
24425        });
24426        assert_eq!(open_editor, main_editor);
24427    });
24428    assert_language_servers_count(1, "First *.rs file starts a language server", cx);
24429
24430    let external_editor = workspace
24431        .update_in(cx, |workspace, window, cx| {
24432            workspace.open_abs_path(
24433                PathBuf::from("/root/foo/bar/external_file.rs"),
24434                OpenOptions::default(),
24435                window,
24436                cx,
24437            )
24438        })
24439        .await
24440        .expect("opening external file")
24441        .downcast::<Editor>()
24442        .expect("downcasted external file's open element to editor");
24443    pane.update(cx, |pane, cx| {
24444        let open_editor = pane.active_item().unwrap().downcast::<Editor>().unwrap();
24445        open_editor.update(cx, |editor, cx| {
24446            assert_eq!(
24447                editor.display_text(cx),
24448                "pub mod external {}",
24449                "External file is open now",
24450            );
24451        });
24452        assert_eq!(open_editor, external_editor);
24453    });
24454    assert_language_servers_count(
24455        1,
24456        "Second, external, *.rs file should join the existing server",
24457        cx,
24458    );
24459
24460    pane.update_in(cx, |pane, window, cx| {
24461        pane.close_active_item(&CloseActiveItem::default(), window, cx)
24462    })
24463    .await
24464    .unwrap();
24465    pane.update_in(cx, |pane, window, cx| {
24466        pane.navigate_backward(&Default::default(), window, cx);
24467    });
24468    cx.run_until_parked();
24469    pane.update(cx, |pane, cx| {
24470        let open_editor = pane.active_item().unwrap().downcast::<Editor>().unwrap();
24471        open_editor.update(cx, |editor, cx| {
24472            assert_eq!(
24473                editor.display_text(cx),
24474                "pub mod external {}",
24475                "External file is open now",
24476            );
24477        });
24478    });
24479    assert_language_servers_count(
24480        1,
24481        "After closing and reopening (with navigate back) of an external file, no extra language servers should appear",
24482        cx,
24483    );
24484
24485    cx.update(|_, cx| {
24486        workspace::reload(cx);
24487    });
24488    assert_language_servers_count(
24489        1,
24490        "After reloading the worktree with local and external files opened, only one project should be started",
24491        cx,
24492    );
24493}
24494
24495#[gpui::test]
24496async fn test_tab_in_leading_whitespace_auto_indents_for_python(cx: &mut TestAppContext) {
24497    init_test(cx, |_| {});
24498
24499    let mut cx = EditorTestContext::new(cx).await;
24500    let language = languages::language("python", tree_sitter_python::LANGUAGE.into());
24501    cx.update_buffer(|buffer, cx| buffer.set_language(Some(language), cx));
24502
24503    // test cursor move to start of each line on tab
24504    // for `if`, `elif`, `else`, `while`, `with` and `for`
24505    cx.set_state(indoc! {"
24506        def main():
24507        ˇ    for item in items:
24508        ˇ        while item.active:
24509        ˇ            if item.value > 10:
24510        ˇ                continue
24511        ˇ            elif item.value < 0:
24512        ˇ                break
24513        ˇ            else:
24514        ˇ                with item.context() as ctx:
24515        ˇ                    yield count
24516        ˇ        else:
24517        ˇ            log('while else')
24518        ˇ    else:
24519        ˇ        log('for else')
24520    "});
24521    cx.update_editor(|e, window, cx| e.tab(&Tab, window, cx));
24522    cx.assert_editor_state(indoc! {"
24523        def main():
24524            ˇfor item in items:
24525                ˇwhile item.active:
24526                    ˇif item.value > 10:
24527                        ˇcontinue
24528                    ˇelif item.value < 0:
24529                        ˇbreak
24530                    ˇelse:
24531                        ˇwith item.context() as ctx:
24532                            ˇyield count
24533                ˇelse:
24534                    ˇlog('while else')
24535            ˇelse:
24536                ˇlog('for else')
24537    "});
24538    // test relative indent is preserved when tab
24539    // for `if`, `elif`, `else`, `while`, `with` and `for`
24540    cx.update_editor(|e, window, cx| e.tab(&Tab, window, cx));
24541    cx.assert_editor_state(indoc! {"
24542        def main():
24543                ˇfor item in items:
24544                    ˇwhile item.active:
24545                        ˇif item.value > 10:
24546                            ˇcontinue
24547                        ˇelif item.value < 0:
24548                            ˇbreak
24549                        ˇelse:
24550                            ˇwith item.context() as ctx:
24551                                ˇyield count
24552                    ˇelse:
24553                        ˇlog('while else')
24554                ˇelse:
24555                    ˇlog('for else')
24556    "});
24557
24558    // test cursor move to start of each line on tab
24559    // for `try`, `except`, `else`, `finally`, `match` and `def`
24560    cx.set_state(indoc! {"
24561        def main():
24562        ˇ    try:
24563        ˇ        fetch()
24564        ˇ    except ValueError:
24565        ˇ        handle_error()
24566        ˇ    else:
24567        ˇ        match value:
24568        ˇ            case _:
24569        ˇ    finally:
24570        ˇ        def status():
24571        ˇ            return 0
24572    "});
24573    cx.update_editor(|e, window, cx| e.tab(&Tab, window, cx));
24574    cx.assert_editor_state(indoc! {"
24575        def main():
24576            ˇtry:
24577                ˇfetch()
24578            ˇexcept ValueError:
24579                ˇhandle_error()
24580            ˇelse:
24581                ˇmatch value:
24582                    ˇcase _:
24583            ˇfinally:
24584                ˇdef status():
24585                    ˇreturn 0
24586    "});
24587    // test relative indent is preserved when tab
24588    // for `try`, `except`, `else`, `finally`, `match` and `def`
24589    cx.update_editor(|e, window, cx| e.tab(&Tab, window, cx));
24590    cx.assert_editor_state(indoc! {"
24591        def main():
24592                ˇtry:
24593                    ˇfetch()
24594                ˇexcept ValueError:
24595                    ˇhandle_error()
24596                ˇelse:
24597                    ˇmatch value:
24598                        ˇcase _:
24599                ˇfinally:
24600                    ˇdef status():
24601                        ˇreturn 0
24602    "});
24603}
24604
24605#[gpui::test]
24606async fn test_outdent_after_input_for_python(cx: &mut TestAppContext) {
24607    init_test(cx, |_| {});
24608
24609    let mut cx = EditorTestContext::new(cx).await;
24610    let language = languages::language("python", tree_sitter_python::LANGUAGE.into());
24611    cx.update_buffer(|buffer, cx| buffer.set_language(Some(language), cx));
24612
24613    // test `else` auto outdents when typed inside `if` block
24614    cx.set_state(indoc! {"
24615        def main():
24616            if i == 2:
24617                return
24618                ˇ
24619    "});
24620    cx.update_editor(|editor, window, cx| {
24621        editor.handle_input("else:", window, cx);
24622    });
24623    cx.assert_editor_state(indoc! {"
24624        def main():
24625            if i == 2:
24626                return
24627            else:ˇ
24628    "});
24629
24630    // test `except` auto outdents when typed inside `try` block
24631    cx.set_state(indoc! {"
24632        def main():
24633            try:
24634                i = 2
24635                ˇ
24636    "});
24637    cx.update_editor(|editor, window, cx| {
24638        editor.handle_input("except:", window, cx);
24639    });
24640    cx.assert_editor_state(indoc! {"
24641        def main():
24642            try:
24643                i = 2
24644            except:ˇ
24645    "});
24646
24647    // test `else` auto outdents when typed inside `except` block
24648    cx.set_state(indoc! {"
24649        def main():
24650            try:
24651                i = 2
24652            except:
24653                j = 2
24654                ˇ
24655    "});
24656    cx.update_editor(|editor, window, cx| {
24657        editor.handle_input("else:", window, cx);
24658    });
24659    cx.assert_editor_state(indoc! {"
24660        def main():
24661            try:
24662                i = 2
24663            except:
24664                j = 2
24665            else:ˇ
24666    "});
24667
24668    // test `finally` auto outdents when typed inside `else` block
24669    cx.set_state(indoc! {"
24670        def main():
24671            try:
24672                i = 2
24673            except:
24674                j = 2
24675            else:
24676                k = 2
24677                ˇ
24678    "});
24679    cx.update_editor(|editor, window, cx| {
24680        editor.handle_input("finally:", window, cx);
24681    });
24682    cx.assert_editor_state(indoc! {"
24683        def main():
24684            try:
24685                i = 2
24686            except:
24687                j = 2
24688            else:
24689                k = 2
24690            finally:ˇ
24691    "});
24692
24693    // test `else` does not outdents when typed inside `except` block right after for block
24694    cx.set_state(indoc! {"
24695        def main():
24696            try:
24697                i = 2
24698            except:
24699                for i in range(n):
24700                    pass
24701                ˇ
24702    "});
24703    cx.update_editor(|editor, window, cx| {
24704        editor.handle_input("else:", window, cx);
24705    });
24706    cx.assert_editor_state(indoc! {"
24707        def main():
24708            try:
24709                i = 2
24710            except:
24711                for i in range(n):
24712                    pass
24713                else:ˇ
24714    "});
24715
24716    // test `finally` auto outdents when typed inside `else` block right after for block
24717    cx.set_state(indoc! {"
24718        def main():
24719            try:
24720                i = 2
24721            except:
24722                j = 2
24723            else:
24724                for i in range(n):
24725                    pass
24726                ˇ
24727    "});
24728    cx.update_editor(|editor, window, cx| {
24729        editor.handle_input("finally:", window, cx);
24730    });
24731    cx.assert_editor_state(indoc! {"
24732        def main():
24733            try:
24734                i = 2
24735            except:
24736                j = 2
24737            else:
24738                for i in range(n):
24739                    pass
24740            finally:ˇ
24741    "});
24742
24743    // test `except` outdents to inner "try" block
24744    cx.set_state(indoc! {"
24745        def main():
24746            try:
24747                i = 2
24748                if i == 2:
24749                    try:
24750                        i = 3
24751                        ˇ
24752    "});
24753    cx.update_editor(|editor, window, cx| {
24754        editor.handle_input("except:", window, cx);
24755    });
24756    cx.assert_editor_state(indoc! {"
24757        def main():
24758            try:
24759                i = 2
24760                if i == 2:
24761                    try:
24762                        i = 3
24763                    except:ˇ
24764    "});
24765
24766    // test `except` outdents to outer "try" block
24767    cx.set_state(indoc! {"
24768        def main():
24769            try:
24770                i = 2
24771                if i == 2:
24772                    try:
24773                        i = 3
24774                ˇ
24775    "});
24776    cx.update_editor(|editor, window, cx| {
24777        editor.handle_input("except:", window, cx);
24778    });
24779    cx.assert_editor_state(indoc! {"
24780        def main():
24781            try:
24782                i = 2
24783                if i == 2:
24784                    try:
24785                        i = 3
24786            except:ˇ
24787    "});
24788
24789    // test `else` stays at correct indent when typed after `for` block
24790    cx.set_state(indoc! {"
24791        def main():
24792            for i in range(10):
24793                if i == 3:
24794                    break
24795            ˇ
24796    "});
24797    cx.update_editor(|editor, window, cx| {
24798        editor.handle_input("else:", window, cx);
24799    });
24800    cx.assert_editor_state(indoc! {"
24801        def main():
24802            for i in range(10):
24803                if i == 3:
24804                    break
24805            else:ˇ
24806    "});
24807
24808    // test does not outdent on typing after line with square brackets
24809    cx.set_state(indoc! {"
24810        def f() -> list[str]:
24811            ˇ
24812    "});
24813    cx.update_editor(|editor, window, cx| {
24814        editor.handle_input("a", window, cx);
24815    });
24816    cx.assert_editor_state(indoc! {"
24817        def f() -> list[str]:
2481824819    "});
24820
24821    // test does not outdent on typing : after case keyword
24822    cx.set_state(indoc! {"
24823        match 1:
24824            caseˇ
24825    "});
24826    cx.update_editor(|editor, window, cx| {
24827        editor.handle_input(":", window, cx);
24828    });
24829    cx.assert_editor_state(indoc! {"
24830        match 1:
24831            case:ˇ
24832    "});
24833}
24834
24835#[gpui::test]
24836async fn test_indent_on_newline_for_python(cx: &mut TestAppContext) {
24837    init_test(cx, |_| {});
24838    update_test_language_settings(cx, |settings| {
24839        settings.defaults.extend_comment_on_newline = Some(false);
24840    });
24841    let mut cx = EditorTestContext::new(cx).await;
24842    let language = languages::language("python", tree_sitter_python::LANGUAGE.into());
24843    cx.update_buffer(|buffer, cx| buffer.set_language(Some(language), cx));
24844
24845    // test correct indent after newline on comment
24846    cx.set_state(indoc! {"
24847        # COMMENT:ˇ
24848    "});
24849    cx.update_editor(|editor, window, cx| {
24850        editor.newline(&Newline, window, cx);
24851    });
24852    cx.assert_editor_state(indoc! {"
24853        # COMMENT:
24854        ˇ
24855    "});
24856
24857    // test correct indent after newline in brackets
24858    cx.set_state(indoc! {"
24859        {ˇ}
24860    "});
24861    cx.update_editor(|editor, window, cx| {
24862        editor.newline(&Newline, window, cx);
24863    });
24864    cx.run_until_parked();
24865    cx.assert_editor_state(indoc! {"
24866        {
24867            ˇ
24868        }
24869    "});
24870
24871    cx.set_state(indoc! {"
24872        (ˇ)
24873    "});
24874    cx.update_editor(|editor, window, cx| {
24875        editor.newline(&Newline, window, cx);
24876    });
24877    cx.run_until_parked();
24878    cx.assert_editor_state(indoc! {"
24879        (
24880            ˇ
24881        )
24882    "});
24883
24884    // do not indent after empty lists or dictionaries
24885    cx.set_state(indoc! {"
24886        a = []ˇ
24887    "});
24888    cx.update_editor(|editor, window, cx| {
24889        editor.newline(&Newline, window, cx);
24890    });
24891    cx.run_until_parked();
24892    cx.assert_editor_state(indoc! {"
24893        a = []
24894        ˇ
24895    "});
24896}
24897
24898#[gpui::test]
24899async fn test_tab_in_leading_whitespace_auto_indents_for_bash(cx: &mut TestAppContext) {
24900    init_test(cx, |_| {});
24901
24902    let mut cx = EditorTestContext::new(cx).await;
24903    let language = languages::language("bash", tree_sitter_bash::LANGUAGE.into());
24904    cx.update_buffer(|buffer, cx| buffer.set_language(Some(language), cx));
24905
24906    // test cursor move to start of each line on tab
24907    // for `if`, `elif`, `else`, `while`, `for`, `case` and `function`
24908    cx.set_state(indoc! {"
24909        function main() {
24910        ˇ    for item in $items; do
24911        ˇ        while [ -n \"$item\" ]; do
24912        ˇ            if [ \"$value\" -gt 10 ]; then
24913        ˇ                continue
24914        ˇ            elif [ \"$value\" -lt 0 ]; then
24915        ˇ                break
24916        ˇ            else
24917        ˇ                echo \"$item\"
24918        ˇ            fi
24919        ˇ        done
24920        ˇ    done
24921        ˇ}
24922    "});
24923    cx.update_editor(|e, window, cx| e.tab(&Tab, window, cx));
24924    cx.assert_editor_state(indoc! {"
24925        function main() {
24926            ˇfor item in $items; do
24927                ˇwhile [ -n \"$item\" ]; do
24928                    ˇif [ \"$value\" -gt 10 ]; then
24929                        ˇcontinue
24930                    ˇelif [ \"$value\" -lt 0 ]; then
24931                        ˇbreak
24932                    ˇelse
24933                        ˇecho \"$item\"
24934                    ˇfi
24935                ˇdone
24936            ˇdone
24937        ˇ}
24938    "});
24939    // test relative indent is preserved when tab
24940    cx.update_editor(|e, window, cx| e.tab(&Tab, window, cx));
24941    cx.assert_editor_state(indoc! {"
24942        function main() {
24943                ˇfor item in $items; do
24944                    ˇwhile [ -n \"$item\" ]; do
24945                        ˇif [ \"$value\" -gt 10 ]; then
24946                            ˇcontinue
24947                        ˇelif [ \"$value\" -lt 0 ]; then
24948                            ˇbreak
24949                        ˇelse
24950                            ˇecho \"$item\"
24951                        ˇfi
24952                    ˇdone
24953                ˇdone
24954            ˇ}
24955    "});
24956
24957    // test cursor move to start of each line on tab
24958    // for `case` statement with patterns
24959    cx.set_state(indoc! {"
24960        function handle() {
24961        ˇ    case \"$1\" in
24962        ˇ        start)
24963        ˇ            echo \"a\"
24964        ˇ            ;;
24965        ˇ        stop)
24966        ˇ            echo \"b\"
24967        ˇ            ;;
24968        ˇ        *)
24969        ˇ            echo \"c\"
24970        ˇ            ;;
24971        ˇ    esac
24972        ˇ}
24973    "});
24974    cx.update_editor(|e, window, cx| e.tab(&Tab, window, cx));
24975    cx.assert_editor_state(indoc! {"
24976        function handle() {
24977            ˇcase \"$1\" in
24978                ˇstart)
24979                    ˇecho \"a\"
24980                    ˇ;;
24981                ˇstop)
24982                    ˇecho \"b\"
24983                    ˇ;;
24984                ˇ*)
24985                    ˇecho \"c\"
24986                    ˇ;;
24987            ˇesac
24988        ˇ}
24989    "});
24990}
24991
24992#[gpui::test]
24993async fn test_indent_after_input_for_bash(cx: &mut TestAppContext) {
24994    init_test(cx, |_| {});
24995
24996    let mut cx = EditorTestContext::new(cx).await;
24997    let language = languages::language("bash", tree_sitter_bash::LANGUAGE.into());
24998    cx.update_buffer(|buffer, cx| buffer.set_language(Some(language), cx));
24999
25000    // test indents on comment insert
25001    cx.set_state(indoc! {"
25002        function main() {
25003        ˇ    for item in $items; do
25004        ˇ        while [ -n \"$item\" ]; do
25005        ˇ            if [ \"$value\" -gt 10 ]; then
25006        ˇ                continue
25007        ˇ            elif [ \"$value\" -lt 0 ]; then
25008        ˇ                break
25009        ˇ            else
25010        ˇ                echo \"$item\"
25011        ˇ            fi
25012        ˇ        done
25013        ˇ    done
25014        ˇ}
25015    "});
25016    cx.update_editor(|e, window, cx| e.handle_input("#", window, cx));
25017    cx.assert_editor_state(indoc! {"
25018        function main() {
25019        #ˇ    for item in $items; do
25020        #ˇ        while [ -n \"$item\" ]; do
25021        #ˇ            if [ \"$value\" -gt 10 ]; then
25022        #ˇ                continue
25023        #ˇ            elif [ \"$value\" -lt 0 ]; then
25024        #ˇ                break
25025        #ˇ            else
25026        #ˇ                echo \"$item\"
25027        #ˇ            fi
25028        #ˇ        done
25029        #ˇ    done
25030        #ˇ}
25031    "});
25032}
25033
25034#[gpui::test]
25035async fn test_outdent_after_input_for_bash(cx: &mut TestAppContext) {
25036    init_test(cx, |_| {});
25037
25038    let mut cx = EditorTestContext::new(cx).await;
25039    let language = languages::language("bash", tree_sitter_bash::LANGUAGE.into());
25040    cx.update_buffer(|buffer, cx| buffer.set_language(Some(language), cx));
25041
25042    // test `else` auto outdents when typed inside `if` block
25043    cx.set_state(indoc! {"
25044        if [ \"$1\" = \"test\" ]; then
25045            echo \"foo bar\"
25046            ˇ
25047    "});
25048    cx.update_editor(|editor, window, cx| {
25049        editor.handle_input("else", window, cx);
25050    });
25051    cx.assert_editor_state(indoc! {"
25052        if [ \"$1\" = \"test\" ]; then
25053            echo \"foo bar\"
25054        elseˇ
25055    "});
25056
25057    // test `elif` auto outdents when typed inside `if` block
25058    cx.set_state(indoc! {"
25059        if [ \"$1\" = \"test\" ]; then
25060            echo \"foo bar\"
25061            ˇ
25062    "});
25063    cx.update_editor(|editor, window, cx| {
25064        editor.handle_input("elif", window, cx);
25065    });
25066    cx.assert_editor_state(indoc! {"
25067        if [ \"$1\" = \"test\" ]; then
25068            echo \"foo bar\"
25069        elifˇ
25070    "});
25071
25072    // test `fi` auto outdents when typed inside `else` block
25073    cx.set_state(indoc! {"
25074        if [ \"$1\" = \"test\" ]; then
25075            echo \"foo bar\"
25076        else
25077            echo \"bar baz\"
25078            ˇ
25079    "});
25080    cx.update_editor(|editor, window, cx| {
25081        editor.handle_input("fi", window, cx);
25082    });
25083    cx.assert_editor_state(indoc! {"
25084        if [ \"$1\" = \"test\" ]; then
25085            echo \"foo bar\"
25086        else
25087            echo \"bar baz\"
25088        fiˇ
25089    "});
25090
25091    // test `done` auto outdents when typed inside `while` block
25092    cx.set_state(indoc! {"
25093        while read line; do
25094            echo \"$line\"
25095            ˇ
25096    "});
25097    cx.update_editor(|editor, window, cx| {
25098        editor.handle_input("done", window, cx);
25099    });
25100    cx.assert_editor_state(indoc! {"
25101        while read line; do
25102            echo \"$line\"
25103        doneˇ
25104    "});
25105
25106    // test `done` auto outdents when typed inside `for` block
25107    cx.set_state(indoc! {"
25108        for file in *.txt; do
25109            cat \"$file\"
25110            ˇ
25111    "});
25112    cx.update_editor(|editor, window, cx| {
25113        editor.handle_input("done", window, cx);
25114    });
25115    cx.assert_editor_state(indoc! {"
25116        for file in *.txt; do
25117            cat \"$file\"
25118        doneˇ
25119    "});
25120
25121    // test `esac` auto outdents when typed inside `case` block
25122    cx.set_state(indoc! {"
25123        case \"$1\" in
25124            start)
25125                echo \"foo bar\"
25126                ;;
25127            stop)
25128                echo \"bar baz\"
25129                ;;
25130            ˇ
25131    "});
25132    cx.update_editor(|editor, window, cx| {
25133        editor.handle_input("esac", window, cx);
25134    });
25135    cx.assert_editor_state(indoc! {"
25136        case \"$1\" in
25137            start)
25138                echo \"foo bar\"
25139                ;;
25140            stop)
25141                echo \"bar baz\"
25142                ;;
25143        esacˇ
25144    "});
25145
25146    // test `*)` auto outdents when typed inside `case` block
25147    cx.set_state(indoc! {"
25148        case \"$1\" in
25149            start)
25150                echo \"foo bar\"
25151                ;;
25152                ˇ
25153    "});
25154    cx.update_editor(|editor, window, cx| {
25155        editor.handle_input("*)", window, cx);
25156    });
25157    cx.assert_editor_state(indoc! {"
25158        case \"$1\" in
25159            start)
25160                echo \"foo bar\"
25161                ;;
25162            *)ˇ
25163    "});
25164
25165    // test `fi` outdents to correct level with nested if blocks
25166    cx.set_state(indoc! {"
25167        if [ \"$1\" = \"test\" ]; then
25168            echo \"outer if\"
25169            if [ \"$2\" = \"debug\" ]; then
25170                echo \"inner if\"
25171                ˇ
25172    "});
25173    cx.update_editor(|editor, window, cx| {
25174        editor.handle_input("fi", window, cx);
25175    });
25176    cx.assert_editor_state(indoc! {"
25177        if [ \"$1\" = \"test\" ]; then
25178            echo \"outer if\"
25179            if [ \"$2\" = \"debug\" ]; then
25180                echo \"inner if\"
25181            fiˇ
25182    "});
25183}
25184
25185#[gpui::test]
25186async fn test_indent_on_newline_for_bash(cx: &mut TestAppContext) {
25187    init_test(cx, |_| {});
25188    update_test_language_settings(cx, |settings| {
25189        settings.defaults.extend_comment_on_newline = Some(false);
25190    });
25191    let mut cx = EditorTestContext::new(cx).await;
25192    let language = languages::language("bash", tree_sitter_bash::LANGUAGE.into());
25193    cx.update_buffer(|buffer, cx| buffer.set_language(Some(language), cx));
25194
25195    // test correct indent after newline on comment
25196    cx.set_state(indoc! {"
25197        # COMMENT:ˇ
25198    "});
25199    cx.update_editor(|editor, window, cx| {
25200        editor.newline(&Newline, window, cx);
25201    });
25202    cx.assert_editor_state(indoc! {"
25203        # COMMENT:
25204        ˇ
25205    "});
25206
25207    // test correct indent after newline after `then`
25208    cx.set_state(indoc! {"
25209
25210        if [ \"$1\" = \"test\" ]; thenˇ
25211    "});
25212    cx.update_editor(|editor, window, cx| {
25213        editor.newline(&Newline, window, cx);
25214    });
25215    cx.run_until_parked();
25216    cx.assert_editor_state(indoc! {"
25217
25218        if [ \"$1\" = \"test\" ]; then
25219            ˇ
25220    "});
25221
25222    // test correct indent after newline after `else`
25223    cx.set_state(indoc! {"
25224        if [ \"$1\" = \"test\" ]; then
25225        elseˇ
25226    "});
25227    cx.update_editor(|editor, window, cx| {
25228        editor.newline(&Newline, window, cx);
25229    });
25230    cx.run_until_parked();
25231    cx.assert_editor_state(indoc! {"
25232        if [ \"$1\" = \"test\" ]; then
25233        else
25234            ˇ
25235    "});
25236
25237    // test correct indent after newline after `elif`
25238    cx.set_state(indoc! {"
25239        if [ \"$1\" = \"test\" ]; then
25240        elifˇ
25241    "});
25242    cx.update_editor(|editor, window, cx| {
25243        editor.newline(&Newline, window, cx);
25244    });
25245    cx.run_until_parked();
25246    cx.assert_editor_state(indoc! {"
25247        if [ \"$1\" = \"test\" ]; then
25248        elif
25249            ˇ
25250    "});
25251
25252    // test correct indent after newline after `do`
25253    cx.set_state(indoc! {"
25254        for file in *.txt; doˇ
25255    "});
25256    cx.update_editor(|editor, window, cx| {
25257        editor.newline(&Newline, window, cx);
25258    });
25259    cx.run_until_parked();
25260    cx.assert_editor_state(indoc! {"
25261        for file in *.txt; do
25262            ˇ
25263    "});
25264
25265    // test correct indent after newline after case pattern
25266    cx.set_state(indoc! {"
25267        case \"$1\" in
25268            start)ˇ
25269    "});
25270    cx.update_editor(|editor, window, cx| {
25271        editor.newline(&Newline, window, cx);
25272    });
25273    cx.run_until_parked();
25274    cx.assert_editor_state(indoc! {"
25275        case \"$1\" in
25276            start)
25277                ˇ
25278    "});
25279
25280    // test correct indent after newline after case pattern
25281    cx.set_state(indoc! {"
25282        case \"$1\" in
25283            start)
25284                ;;
25285            *)ˇ
25286    "});
25287    cx.update_editor(|editor, window, cx| {
25288        editor.newline(&Newline, window, cx);
25289    });
25290    cx.run_until_parked();
25291    cx.assert_editor_state(indoc! {"
25292        case \"$1\" in
25293            start)
25294                ;;
25295            *)
25296                ˇ
25297    "});
25298
25299    // test correct indent after newline after function opening brace
25300    cx.set_state(indoc! {"
25301        function test() {ˇ}
25302    "});
25303    cx.update_editor(|editor, window, cx| {
25304        editor.newline(&Newline, window, cx);
25305    });
25306    cx.run_until_parked();
25307    cx.assert_editor_state(indoc! {"
25308        function test() {
25309            ˇ
25310        }
25311    "});
25312
25313    // test no extra indent after semicolon on same line
25314    cx.set_state(indoc! {"
25315        echo \"test\"25316    "});
25317    cx.update_editor(|editor, window, cx| {
25318        editor.newline(&Newline, window, cx);
25319    });
25320    cx.run_until_parked();
25321    cx.assert_editor_state(indoc! {"
25322        echo \"test\";
25323        ˇ
25324    "});
25325}
25326
25327fn empty_range(row: usize, column: usize) -> Range<DisplayPoint> {
25328    let point = DisplayPoint::new(DisplayRow(row as u32), column as u32);
25329    point..point
25330}
25331
25332#[track_caller]
25333fn assert_selection_ranges(marked_text: &str, editor: &mut Editor, cx: &mut Context<Editor>) {
25334    let (text, ranges) = marked_text_ranges(marked_text, true);
25335    assert_eq!(editor.text(cx), text);
25336    assert_eq!(
25337        editor.selections.ranges(&editor.display_snapshot(cx)),
25338        ranges,
25339        "Assert selections are {}",
25340        marked_text
25341    );
25342}
25343
25344pub fn handle_signature_help_request(
25345    cx: &mut EditorLspTestContext,
25346    mocked_response: lsp::SignatureHelp,
25347) -> impl Future<Output = ()> + use<> {
25348    let mut request =
25349        cx.set_request_handler::<lsp::request::SignatureHelpRequest, _, _>(move |_, _, _| {
25350            let mocked_response = mocked_response.clone();
25351            async move { Ok(Some(mocked_response)) }
25352        });
25353
25354    async move {
25355        request.next().await;
25356    }
25357}
25358
25359#[track_caller]
25360pub fn check_displayed_completions(expected: Vec<&'static str>, cx: &mut EditorLspTestContext) {
25361    cx.update_editor(|editor, _, _| {
25362        if let Some(CodeContextMenu::Completions(menu)) = editor.context_menu.borrow().as_ref() {
25363            let entries = menu.entries.borrow();
25364            let entries = entries
25365                .iter()
25366                .map(|entry| entry.string.as_str())
25367                .collect::<Vec<_>>();
25368            assert_eq!(entries, expected);
25369        } else {
25370            panic!("Expected completions menu");
25371        }
25372    });
25373}
25374
25375/// Handle completion request passing a marked string specifying where the completion
25376/// should be triggered from using '|' character, what range should be replaced, and what completions
25377/// should be returned using '<' and '>' to delimit the range.
25378///
25379/// Also see `handle_completion_request_with_insert_and_replace`.
25380#[track_caller]
25381pub fn handle_completion_request(
25382    marked_string: &str,
25383    completions: Vec<&'static str>,
25384    is_incomplete: bool,
25385    counter: Arc<AtomicUsize>,
25386    cx: &mut EditorLspTestContext,
25387) -> impl Future<Output = ()> {
25388    let complete_from_marker: TextRangeMarker = '|'.into();
25389    let replace_range_marker: TextRangeMarker = ('<', '>').into();
25390    let (_, mut marked_ranges) = marked_text_ranges_by(
25391        marked_string,
25392        vec![complete_from_marker.clone(), replace_range_marker.clone()],
25393    );
25394
25395    let complete_from_position =
25396        cx.to_lsp(marked_ranges.remove(&complete_from_marker).unwrap()[0].start);
25397    let replace_range =
25398        cx.to_lsp_range(marked_ranges.remove(&replace_range_marker).unwrap()[0].clone());
25399
25400    let mut request =
25401        cx.set_request_handler::<lsp::request::Completion, _, _>(move |url, params, _| {
25402            let completions = completions.clone();
25403            counter.fetch_add(1, atomic::Ordering::Release);
25404            async move {
25405                assert_eq!(params.text_document_position.text_document.uri, url.clone());
25406                assert_eq!(
25407                    params.text_document_position.position,
25408                    complete_from_position
25409                );
25410                Ok(Some(lsp::CompletionResponse::List(lsp::CompletionList {
25411                    is_incomplete,
25412                    item_defaults: None,
25413                    items: completions
25414                        .iter()
25415                        .map(|completion_text| lsp::CompletionItem {
25416                            label: completion_text.to_string(),
25417                            text_edit: Some(lsp::CompletionTextEdit::Edit(lsp::TextEdit {
25418                                range: replace_range,
25419                                new_text: completion_text.to_string(),
25420                            })),
25421                            ..Default::default()
25422                        })
25423                        .collect(),
25424                })))
25425            }
25426        });
25427
25428    async move {
25429        request.next().await;
25430    }
25431}
25432
25433/// Similar to `handle_completion_request`, but a [`CompletionTextEdit::InsertAndReplace`] will be
25434/// given instead, which also contains an `insert` range.
25435///
25436/// This function uses markers to define ranges:
25437/// - `|` marks the cursor position
25438/// - `<>` marks the replace range
25439/// - `[]` marks the insert range (optional, defaults to `replace_range.start..cursor_pos`which is what Rust-Analyzer provides)
25440pub fn handle_completion_request_with_insert_and_replace(
25441    cx: &mut EditorLspTestContext,
25442    marked_string: &str,
25443    completions: Vec<(&'static str, &'static str)>, // (label, new_text)
25444    counter: Arc<AtomicUsize>,
25445) -> impl Future<Output = ()> {
25446    let complete_from_marker: TextRangeMarker = '|'.into();
25447    let replace_range_marker: TextRangeMarker = ('<', '>').into();
25448    let insert_range_marker: TextRangeMarker = ('{', '}').into();
25449
25450    let (_, mut marked_ranges) = marked_text_ranges_by(
25451        marked_string,
25452        vec![
25453            complete_from_marker.clone(),
25454            replace_range_marker.clone(),
25455            insert_range_marker.clone(),
25456        ],
25457    );
25458
25459    let complete_from_position =
25460        cx.to_lsp(marked_ranges.remove(&complete_from_marker).unwrap()[0].start);
25461    let replace_range =
25462        cx.to_lsp_range(marked_ranges.remove(&replace_range_marker).unwrap()[0].clone());
25463
25464    let insert_range = match marked_ranges.remove(&insert_range_marker) {
25465        Some(ranges) if !ranges.is_empty() => cx.to_lsp_range(ranges[0].clone()),
25466        _ => lsp::Range {
25467            start: replace_range.start,
25468            end: complete_from_position,
25469        },
25470    };
25471
25472    let mut request =
25473        cx.set_request_handler::<lsp::request::Completion, _, _>(move |url, params, _| {
25474            let completions = completions.clone();
25475            counter.fetch_add(1, atomic::Ordering::Release);
25476            async move {
25477                assert_eq!(params.text_document_position.text_document.uri, url.clone());
25478                assert_eq!(
25479                    params.text_document_position.position, complete_from_position,
25480                    "marker `|` position doesn't match",
25481                );
25482                Ok(Some(lsp::CompletionResponse::Array(
25483                    completions
25484                        .iter()
25485                        .map(|(label, new_text)| lsp::CompletionItem {
25486                            label: label.to_string(),
25487                            text_edit: Some(lsp::CompletionTextEdit::InsertAndReplace(
25488                                lsp::InsertReplaceEdit {
25489                                    insert: insert_range,
25490                                    replace: replace_range,
25491                                    new_text: new_text.to_string(),
25492                                },
25493                            )),
25494                            ..Default::default()
25495                        })
25496                        .collect(),
25497                )))
25498            }
25499        });
25500
25501    async move {
25502        request.next().await;
25503    }
25504}
25505
25506fn handle_resolve_completion_request(
25507    cx: &mut EditorLspTestContext,
25508    edits: Option<Vec<(&'static str, &'static str)>>,
25509) -> impl Future<Output = ()> {
25510    let edits = edits.map(|edits| {
25511        edits
25512            .iter()
25513            .map(|(marked_string, new_text)| {
25514                let (_, marked_ranges) = marked_text_ranges(marked_string, false);
25515                let replace_range = cx.to_lsp_range(marked_ranges[0].clone());
25516                lsp::TextEdit::new(replace_range, new_text.to_string())
25517            })
25518            .collect::<Vec<_>>()
25519    });
25520
25521    let mut request =
25522        cx.set_request_handler::<lsp::request::ResolveCompletionItem, _, _>(move |_, _, _| {
25523            let edits = edits.clone();
25524            async move {
25525                Ok(lsp::CompletionItem {
25526                    additional_text_edits: edits,
25527                    ..Default::default()
25528                })
25529            }
25530        });
25531
25532    async move {
25533        request.next().await;
25534    }
25535}
25536
25537pub(crate) fn update_test_language_settings(
25538    cx: &mut TestAppContext,
25539    f: impl Fn(&mut AllLanguageSettingsContent),
25540) {
25541    cx.update(|cx| {
25542        SettingsStore::update_global(cx, |store, cx| {
25543            store.update_user_settings(cx, |settings| f(&mut settings.project.all_languages));
25544        });
25545    });
25546}
25547
25548pub(crate) fn update_test_project_settings(
25549    cx: &mut TestAppContext,
25550    f: impl Fn(&mut ProjectSettingsContent),
25551) {
25552    cx.update(|cx| {
25553        SettingsStore::update_global(cx, |store, cx| {
25554            store.update_user_settings(cx, |settings| f(&mut settings.project));
25555        });
25556    });
25557}
25558
25559pub(crate) fn init_test(cx: &mut TestAppContext, f: fn(&mut AllLanguageSettingsContent)) {
25560    cx.update(|cx| {
25561        assets::Assets.load_test_fonts(cx);
25562        let store = SettingsStore::test(cx);
25563        cx.set_global(store);
25564        theme::init(theme::LoadThemes::JustBase, cx);
25565        release_channel::init(SemanticVersion::default(), cx);
25566        client::init_settings(cx);
25567        language::init(cx);
25568        Project::init_settings(cx);
25569        workspace::init_settings(cx);
25570        crate::init(cx);
25571    });
25572    zlog::init_test();
25573    update_test_language_settings(cx, f);
25574}
25575
25576#[track_caller]
25577fn assert_hunk_revert(
25578    not_reverted_text_with_selections: &str,
25579    expected_hunk_statuses_before: Vec<DiffHunkStatusKind>,
25580    expected_reverted_text_with_selections: &str,
25581    base_text: &str,
25582    cx: &mut EditorLspTestContext,
25583) {
25584    cx.set_state(not_reverted_text_with_selections);
25585    cx.set_head_text(base_text);
25586    cx.executor().run_until_parked();
25587
25588    let actual_hunk_statuses_before = cx.update_editor(|editor, window, cx| {
25589        let snapshot = editor.snapshot(window, cx);
25590        let reverted_hunk_statuses = snapshot
25591            .buffer_snapshot()
25592            .diff_hunks_in_range(0..snapshot.buffer_snapshot().len())
25593            .map(|hunk| hunk.status().kind)
25594            .collect::<Vec<_>>();
25595
25596        editor.git_restore(&Default::default(), window, cx);
25597        reverted_hunk_statuses
25598    });
25599    cx.executor().run_until_parked();
25600    cx.assert_editor_state(expected_reverted_text_with_selections);
25601    assert_eq!(actual_hunk_statuses_before, expected_hunk_statuses_before);
25602}
25603
25604#[gpui::test(iterations = 10)]
25605async fn test_pulling_diagnostics(cx: &mut TestAppContext) {
25606    init_test(cx, |_| {});
25607
25608    let diagnostic_requests = Arc::new(AtomicUsize::new(0));
25609    let counter = diagnostic_requests.clone();
25610
25611    let fs = FakeFs::new(cx.executor());
25612    fs.insert_tree(
25613        path!("/a"),
25614        json!({
25615            "first.rs": "fn main() { let a = 5; }",
25616            "second.rs": "// Test file",
25617        }),
25618    )
25619    .await;
25620
25621    let project = Project::test(fs, [path!("/a").as_ref()], cx).await;
25622    let workspace = cx.add_window(|window, cx| Workspace::test_new(project.clone(), window, cx));
25623    let cx = &mut VisualTestContext::from_window(*workspace, cx);
25624
25625    let language_registry = project.read_with(cx, |project, _| project.languages().clone());
25626    language_registry.add(rust_lang());
25627    let mut fake_servers = language_registry.register_fake_lsp(
25628        "Rust",
25629        FakeLspAdapter {
25630            capabilities: lsp::ServerCapabilities {
25631                diagnostic_provider: Some(lsp::DiagnosticServerCapabilities::Options(
25632                    lsp::DiagnosticOptions {
25633                        identifier: None,
25634                        inter_file_dependencies: true,
25635                        workspace_diagnostics: true,
25636                        work_done_progress_options: Default::default(),
25637                    },
25638                )),
25639                ..Default::default()
25640            },
25641            ..Default::default()
25642        },
25643    );
25644
25645    let editor = workspace
25646        .update(cx, |workspace, window, cx| {
25647            workspace.open_abs_path(
25648                PathBuf::from(path!("/a/first.rs")),
25649                OpenOptions::default(),
25650                window,
25651                cx,
25652            )
25653        })
25654        .unwrap()
25655        .await
25656        .unwrap()
25657        .downcast::<Editor>()
25658        .unwrap();
25659    let fake_server = fake_servers.next().await.unwrap();
25660    let server_id = fake_server.server.server_id();
25661    let mut first_request = fake_server
25662        .set_request_handler::<lsp::request::DocumentDiagnosticRequest, _, _>(move |params, _| {
25663            let new_result_id = counter.fetch_add(1, atomic::Ordering::Release) + 1;
25664            let result_id = Some(new_result_id.to_string());
25665            assert_eq!(
25666                params.text_document.uri,
25667                lsp::Uri::from_file_path(path!("/a/first.rs")).unwrap()
25668            );
25669            async move {
25670                Ok(lsp::DocumentDiagnosticReportResult::Report(
25671                    lsp::DocumentDiagnosticReport::Full(lsp::RelatedFullDocumentDiagnosticReport {
25672                        related_documents: None,
25673                        full_document_diagnostic_report: lsp::FullDocumentDiagnosticReport {
25674                            items: Vec::new(),
25675                            result_id,
25676                        },
25677                    }),
25678                ))
25679            }
25680        });
25681
25682    let ensure_result_id = |expected: Option<String>, cx: &mut TestAppContext| {
25683        project.update(cx, |project, cx| {
25684            let buffer_id = editor
25685                .read(cx)
25686                .buffer()
25687                .read(cx)
25688                .as_singleton()
25689                .expect("created a singleton buffer")
25690                .read(cx)
25691                .remote_id();
25692            let buffer_result_id = project
25693                .lsp_store()
25694                .read(cx)
25695                .result_id(server_id, buffer_id, cx);
25696            assert_eq!(expected, buffer_result_id);
25697        });
25698    };
25699
25700    ensure_result_id(None, cx);
25701    cx.executor().advance_clock(Duration::from_millis(60));
25702    cx.executor().run_until_parked();
25703    assert_eq!(
25704        diagnostic_requests.load(atomic::Ordering::Acquire),
25705        1,
25706        "Opening file should trigger diagnostic request"
25707    );
25708    first_request
25709        .next()
25710        .await
25711        .expect("should have sent the first diagnostics pull request");
25712    ensure_result_id(Some("1".to_string()), cx);
25713
25714    // Editing should trigger diagnostics
25715    editor.update_in(cx, |editor, window, cx| {
25716        editor.handle_input("2", window, cx)
25717    });
25718    cx.executor().advance_clock(Duration::from_millis(60));
25719    cx.executor().run_until_parked();
25720    assert_eq!(
25721        diagnostic_requests.load(atomic::Ordering::Acquire),
25722        2,
25723        "Editing should trigger diagnostic request"
25724    );
25725    ensure_result_id(Some("2".to_string()), cx);
25726
25727    // Moving cursor should not trigger diagnostic request
25728    editor.update_in(cx, |editor, window, cx| {
25729        editor.change_selections(SelectionEffects::no_scroll(), window, cx, |s| {
25730            s.select_ranges([Point::new(0, 0)..Point::new(0, 0)])
25731        });
25732    });
25733    cx.executor().advance_clock(Duration::from_millis(60));
25734    cx.executor().run_until_parked();
25735    assert_eq!(
25736        diagnostic_requests.load(atomic::Ordering::Acquire),
25737        2,
25738        "Cursor movement should not trigger diagnostic request"
25739    );
25740    ensure_result_id(Some("2".to_string()), cx);
25741    // Multiple rapid edits should be debounced
25742    for _ in 0..5 {
25743        editor.update_in(cx, |editor, window, cx| {
25744            editor.handle_input("x", window, cx)
25745        });
25746    }
25747    cx.executor().advance_clock(Duration::from_millis(60));
25748    cx.executor().run_until_parked();
25749
25750    let final_requests = diagnostic_requests.load(atomic::Ordering::Acquire);
25751    assert!(
25752        final_requests <= 4,
25753        "Multiple rapid edits should be debounced (got {final_requests} requests)",
25754    );
25755    ensure_result_id(Some(final_requests.to_string()), cx);
25756}
25757
25758#[gpui::test]
25759async fn test_add_selection_after_moving_with_multiple_cursors(cx: &mut TestAppContext) {
25760    // Regression test for issue #11671
25761    // Previously, adding a cursor after moving multiple cursors would reset
25762    // the cursor count instead of adding to the existing cursors.
25763    init_test(cx, |_| {});
25764    let mut cx = EditorTestContext::new(cx).await;
25765
25766    // Create a simple buffer with cursor at start
25767    cx.set_state(indoc! {"
25768        ˇaaaa
25769        bbbb
25770        cccc
25771        dddd
25772        eeee
25773        ffff
25774        gggg
25775        hhhh"});
25776
25777    // Add 2 cursors below (so we have 3 total)
25778    cx.update_editor(|editor, window, cx| {
25779        editor.add_selection_below(&Default::default(), window, cx);
25780        editor.add_selection_below(&Default::default(), window, cx);
25781    });
25782
25783    // Verify we have 3 cursors
25784    let initial_count = cx.update_editor(|editor, _, _| editor.selections.count());
25785    assert_eq!(
25786        initial_count, 3,
25787        "Should have 3 cursors after adding 2 below"
25788    );
25789
25790    // Move down one line
25791    cx.update_editor(|editor, window, cx| {
25792        editor.move_down(&MoveDown, window, cx);
25793    });
25794
25795    // Add another cursor below
25796    cx.update_editor(|editor, window, cx| {
25797        editor.add_selection_below(&Default::default(), window, cx);
25798    });
25799
25800    // Should now have 4 cursors (3 original + 1 new)
25801    let final_count = cx.update_editor(|editor, _, _| editor.selections.count());
25802    assert_eq!(
25803        final_count, 4,
25804        "Should have 4 cursors after moving and adding another"
25805    );
25806}
25807
25808#[gpui::test]
25809async fn test_add_selection_skip_soft_wrap_option(cx: &mut TestAppContext) {
25810    init_test(cx, |_| {});
25811
25812    let mut cx = EditorTestContext::new(cx).await;
25813
25814    cx.set_state(indoc!(
25815        r#"ˇThis is a very long line that will be wrapped when soft wrapping is enabled
25816           Second line here"#
25817    ));
25818
25819    cx.update_editor(|editor, window, cx| {
25820        // Enable soft wrapping with a narrow width to force soft wrapping and
25821        // confirm that more than 2 rows are being displayed.
25822        editor.set_wrap_width(Some(100.0.into()), cx);
25823        assert!(editor.display_text(cx).lines().count() > 2);
25824
25825        editor.add_selection_below(
25826            &AddSelectionBelow {
25827                skip_soft_wrap: true,
25828            },
25829            window,
25830            cx,
25831        );
25832
25833        assert_eq!(
25834            editor.selections.display_ranges(cx),
25835            &[
25836                DisplayPoint::new(DisplayRow(0), 0)..DisplayPoint::new(DisplayRow(0), 0),
25837                DisplayPoint::new(DisplayRow(8), 0)..DisplayPoint::new(DisplayRow(8), 0),
25838            ]
25839        );
25840
25841        editor.add_selection_above(
25842            &AddSelectionAbove {
25843                skip_soft_wrap: true,
25844            },
25845            window,
25846            cx,
25847        );
25848
25849        assert_eq!(
25850            editor.selections.display_ranges(cx),
25851            &[DisplayPoint::new(DisplayRow(0), 0)..DisplayPoint::new(DisplayRow(0), 0)]
25852        );
25853
25854        editor.add_selection_below(
25855            &AddSelectionBelow {
25856                skip_soft_wrap: false,
25857            },
25858            window,
25859            cx,
25860        );
25861
25862        assert_eq!(
25863            editor.selections.display_ranges(cx),
25864            &[
25865                DisplayPoint::new(DisplayRow(0), 0)..DisplayPoint::new(DisplayRow(0), 0),
25866                DisplayPoint::new(DisplayRow(1), 0)..DisplayPoint::new(DisplayRow(1), 0),
25867            ]
25868        );
25869
25870        editor.add_selection_above(
25871            &AddSelectionAbove {
25872                skip_soft_wrap: false,
25873            },
25874            window,
25875            cx,
25876        );
25877
25878        assert_eq!(
25879            editor.selections.display_ranges(cx),
25880            &[DisplayPoint::new(DisplayRow(0), 0)..DisplayPoint::new(DisplayRow(0), 0)]
25881        );
25882    });
25883}
25884
25885#[gpui::test(iterations = 10)]
25886async fn test_document_colors(cx: &mut TestAppContext) {
25887    let expected_color = Rgba {
25888        r: 0.33,
25889        g: 0.33,
25890        b: 0.33,
25891        a: 0.33,
25892    };
25893
25894    init_test(cx, |_| {});
25895
25896    let fs = FakeFs::new(cx.executor());
25897    fs.insert_tree(
25898        path!("/a"),
25899        json!({
25900            "first.rs": "fn main() { let a = 5; }",
25901        }),
25902    )
25903    .await;
25904
25905    let project = Project::test(fs, [path!("/a").as_ref()], cx).await;
25906    let workspace = cx.add_window(|window, cx| Workspace::test_new(project.clone(), window, cx));
25907    let cx = &mut VisualTestContext::from_window(*workspace, cx);
25908
25909    let language_registry = project.read_with(cx, |project, _| project.languages().clone());
25910    language_registry.add(rust_lang());
25911    let mut fake_servers = language_registry.register_fake_lsp(
25912        "Rust",
25913        FakeLspAdapter {
25914            capabilities: lsp::ServerCapabilities {
25915                color_provider: Some(lsp::ColorProviderCapability::Simple(true)),
25916                ..lsp::ServerCapabilities::default()
25917            },
25918            name: "rust-analyzer",
25919            ..FakeLspAdapter::default()
25920        },
25921    );
25922    let mut fake_servers_without_capabilities = language_registry.register_fake_lsp(
25923        "Rust",
25924        FakeLspAdapter {
25925            capabilities: lsp::ServerCapabilities {
25926                color_provider: Some(lsp::ColorProviderCapability::Simple(false)),
25927                ..lsp::ServerCapabilities::default()
25928            },
25929            name: "not-rust-analyzer",
25930            ..FakeLspAdapter::default()
25931        },
25932    );
25933
25934    let editor = workspace
25935        .update(cx, |workspace, window, cx| {
25936            workspace.open_abs_path(
25937                PathBuf::from(path!("/a/first.rs")),
25938                OpenOptions::default(),
25939                window,
25940                cx,
25941            )
25942        })
25943        .unwrap()
25944        .await
25945        .unwrap()
25946        .downcast::<Editor>()
25947        .unwrap();
25948    let fake_language_server = fake_servers.next().await.unwrap();
25949    let fake_language_server_without_capabilities =
25950        fake_servers_without_capabilities.next().await.unwrap();
25951    let requests_made = Arc::new(AtomicUsize::new(0));
25952    let closure_requests_made = Arc::clone(&requests_made);
25953    let mut color_request_handle = fake_language_server
25954        .set_request_handler::<lsp::request::DocumentColor, _, _>(move |params, _| {
25955            let requests_made = Arc::clone(&closure_requests_made);
25956            async move {
25957                assert_eq!(
25958                    params.text_document.uri,
25959                    lsp::Uri::from_file_path(path!("/a/first.rs")).unwrap()
25960                );
25961                requests_made.fetch_add(1, atomic::Ordering::Release);
25962                Ok(vec![
25963                    lsp::ColorInformation {
25964                        range: lsp::Range {
25965                            start: lsp::Position {
25966                                line: 0,
25967                                character: 0,
25968                            },
25969                            end: lsp::Position {
25970                                line: 0,
25971                                character: 1,
25972                            },
25973                        },
25974                        color: lsp::Color {
25975                            red: 0.33,
25976                            green: 0.33,
25977                            blue: 0.33,
25978                            alpha: 0.33,
25979                        },
25980                    },
25981                    lsp::ColorInformation {
25982                        range: lsp::Range {
25983                            start: lsp::Position {
25984                                line: 0,
25985                                character: 0,
25986                            },
25987                            end: lsp::Position {
25988                                line: 0,
25989                                character: 1,
25990                            },
25991                        },
25992                        color: lsp::Color {
25993                            red: 0.33,
25994                            green: 0.33,
25995                            blue: 0.33,
25996                            alpha: 0.33,
25997                        },
25998                    },
25999                ])
26000            }
26001        });
26002
26003    let _handle = fake_language_server_without_capabilities
26004        .set_request_handler::<lsp::request::DocumentColor, _, _>(move |_, _| async move {
26005            panic!("Should not be called");
26006        });
26007    cx.executor().advance_clock(FETCH_COLORS_DEBOUNCE_TIMEOUT);
26008    color_request_handle.next().await.unwrap();
26009    cx.run_until_parked();
26010    assert_eq!(
26011        1,
26012        requests_made.load(atomic::Ordering::Acquire),
26013        "Should query for colors once per editor open"
26014    );
26015    editor.update_in(cx, |editor, _, cx| {
26016        assert_eq!(
26017            vec![expected_color],
26018            extract_color_inlays(editor, cx),
26019            "Should have an initial inlay"
26020        );
26021    });
26022
26023    // opening another file in a split should not influence the LSP query counter
26024    workspace
26025        .update(cx, |workspace, window, cx| {
26026            assert_eq!(
26027                workspace.panes().len(),
26028                1,
26029                "Should have one pane with one editor"
26030            );
26031            workspace.move_item_to_pane_in_direction(
26032                &MoveItemToPaneInDirection {
26033                    direction: SplitDirection::Right,
26034                    focus: false,
26035                    clone: true,
26036                },
26037                window,
26038                cx,
26039            );
26040        })
26041        .unwrap();
26042    cx.run_until_parked();
26043    workspace
26044        .update(cx, |workspace, _, cx| {
26045            let panes = workspace.panes();
26046            assert_eq!(panes.len(), 2, "Should have two panes after splitting");
26047            for pane in panes {
26048                let editor = pane
26049                    .read(cx)
26050                    .active_item()
26051                    .and_then(|item| item.downcast::<Editor>())
26052                    .expect("Should have opened an editor in each split");
26053                let editor_file = editor
26054                    .read(cx)
26055                    .buffer()
26056                    .read(cx)
26057                    .as_singleton()
26058                    .expect("test deals with singleton buffers")
26059                    .read(cx)
26060                    .file()
26061                    .expect("test buffese should have a file")
26062                    .path();
26063                assert_eq!(
26064                    editor_file.as_ref(),
26065                    rel_path("first.rs"),
26066                    "Both editors should be opened for the same file"
26067                )
26068            }
26069        })
26070        .unwrap();
26071
26072    cx.executor().advance_clock(Duration::from_millis(500));
26073    let save = editor.update_in(cx, |editor, window, cx| {
26074        editor.move_to_end(&MoveToEnd, window, cx);
26075        editor.handle_input("dirty", window, cx);
26076        editor.save(
26077            SaveOptions {
26078                format: true,
26079                autosave: true,
26080            },
26081            project.clone(),
26082            window,
26083            cx,
26084        )
26085    });
26086    save.await.unwrap();
26087
26088    color_request_handle.next().await.unwrap();
26089    cx.run_until_parked();
26090    assert_eq!(
26091        2,
26092        requests_made.load(atomic::Ordering::Acquire),
26093        "Should query for colors once per save (deduplicated) and once per formatting after save"
26094    );
26095
26096    drop(editor);
26097    let close = workspace
26098        .update(cx, |workspace, window, cx| {
26099            workspace.active_pane().update(cx, |pane, cx| {
26100                pane.close_active_item(&CloseActiveItem::default(), window, cx)
26101            })
26102        })
26103        .unwrap();
26104    close.await.unwrap();
26105    let close = workspace
26106        .update(cx, |workspace, window, cx| {
26107            workspace.active_pane().update(cx, |pane, cx| {
26108                pane.close_active_item(&CloseActiveItem::default(), window, cx)
26109            })
26110        })
26111        .unwrap();
26112    close.await.unwrap();
26113    assert_eq!(
26114        2,
26115        requests_made.load(atomic::Ordering::Acquire),
26116        "After saving and closing all editors, no extra requests should be made"
26117    );
26118    workspace
26119        .update(cx, |workspace, _, cx| {
26120            assert!(
26121                workspace.active_item(cx).is_none(),
26122                "Should close all editors"
26123            )
26124        })
26125        .unwrap();
26126
26127    workspace
26128        .update(cx, |workspace, window, cx| {
26129            workspace.active_pane().update(cx, |pane, cx| {
26130                pane.navigate_backward(&workspace::GoBack, window, cx);
26131            })
26132        })
26133        .unwrap();
26134    cx.executor().advance_clock(FETCH_COLORS_DEBOUNCE_TIMEOUT);
26135    cx.run_until_parked();
26136    let editor = workspace
26137        .update(cx, |workspace, _, cx| {
26138            workspace
26139                .active_item(cx)
26140                .expect("Should have reopened the editor again after navigating back")
26141                .downcast::<Editor>()
26142                .expect("Should be an editor")
26143        })
26144        .unwrap();
26145
26146    assert_eq!(
26147        2,
26148        requests_made.load(atomic::Ordering::Acquire),
26149        "Cache should be reused on buffer close and reopen"
26150    );
26151    editor.update(cx, |editor, cx| {
26152        assert_eq!(
26153            vec![expected_color],
26154            extract_color_inlays(editor, cx),
26155            "Should have an initial inlay"
26156        );
26157    });
26158
26159    drop(color_request_handle);
26160    let closure_requests_made = Arc::clone(&requests_made);
26161    let mut empty_color_request_handle = fake_language_server
26162        .set_request_handler::<lsp::request::DocumentColor, _, _>(move |params, _| {
26163            let requests_made = Arc::clone(&closure_requests_made);
26164            async move {
26165                assert_eq!(
26166                    params.text_document.uri,
26167                    lsp::Uri::from_file_path(path!("/a/first.rs")).unwrap()
26168                );
26169                requests_made.fetch_add(1, atomic::Ordering::Release);
26170                Ok(Vec::new())
26171            }
26172        });
26173    let save = editor.update_in(cx, |editor, window, cx| {
26174        editor.move_to_end(&MoveToEnd, window, cx);
26175        editor.handle_input("dirty_again", window, cx);
26176        editor.save(
26177            SaveOptions {
26178                format: false,
26179                autosave: true,
26180            },
26181            project.clone(),
26182            window,
26183            cx,
26184        )
26185    });
26186    save.await.unwrap();
26187
26188    cx.executor().advance_clock(FETCH_COLORS_DEBOUNCE_TIMEOUT);
26189    empty_color_request_handle.next().await.unwrap();
26190    cx.run_until_parked();
26191    assert_eq!(
26192        3,
26193        requests_made.load(atomic::Ordering::Acquire),
26194        "Should query for colors once per save only, as formatting was not requested"
26195    );
26196    editor.update(cx, |editor, cx| {
26197        assert_eq!(
26198            Vec::<Rgba>::new(),
26199            extract_color_inlays(editor, cx),
26200            "Should clear all colors when the server returns an empty response"
26201        );
26202    });
26203}
26204
26205#[gpui::test]
26206async fn test_newline_replacement_in_single_line(cx: &mut TestAppContext) {
26207    init_test(cx, |_| {});
26208    let (editor, cx) = cx.add_window_view(Editor::single_line);
26209    editor.update_in(cx, |editor, window, cx| {
26210        editor.set_text("oops\n\nwow\n", window, cx)
26211    });
26212    cx.run_until_parked();
26213    editor.update(cx, |editor, cx| {
26214        assert_eq!(editor.display_text(cx), "oops⋯⋯wow⋯");
26215    });
26216    editor.update(cx, |editor, cx| editor.edit([(3..5, "")], cx));
26217    cx.run_until_parked();
26218    editor.update(cx, |editor, cx| {
26219        assert_eq!(editor.display_text(cx), "oop⋯wow⋯");
26220    });
26221}
26222
26223#[gpui::test]
26224async fn test_non_utf_8_opens(cx: &mut TestAppContext) {
26225    init_test(cx, |_| {});
26226
26227    cx.update(|cx| {
26228        register_project_item::<Editor>(cx);
26229    });
26230
26231    let fs = FakeFs::new(cx.executor());
26232    fs.insert_tree("/root1", json!({})).await;
26233    fs.insert_file("/root1/one.pdf", vec![0xff, 0xfe, 0xfd])
26234        .await;
26235
26236    let project = Project::test(fs, ["/root1".as_ref()], cx).await;
26237    let (workspace, cx) =
26238        cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
26239
26240    let worktree_id = project.update(cx, |project, cx| {
26241        project.worktrees(cx).next().unwrap().read(cx).id()
26242    });
26243
26244    let handle = workspace
26245        .update_in(cx, |workspace, window, cx| {
26246            let project_path = (worktree_id, rel_path("one.pdf"));
26247            workspace.open_path(project_path, None, true, window, cx)
26248        })
26249        .await
26250        .unwrap();
26251
26252    assert_eq!(
26253        handle.to_any().entity_type(),
26254        TypeId::of::<InvalidBufferView>()
26255    );
26256}
26257
26258#[gpui::test]
26259async fn test_select_next_prev_syntax_node(cx: &mut TestAppContext) {
26260    init_test(cx, |_| {});
26261
26262    let language = Arc::new(Language::new(
26263        LanguageConfig::default(),
26264        Some(tree_sitter_rust::LANGUAGE.into()),
26265    ));
26266
26267    // Test hierarchical sibling navigation
26268    let text = r#"
26269        fn outer() {
26270            if condition {
26271                let a = 1;
26272            }
26273            let b = 2;
26274        }
26275
26276        fn another() {
26277            let c = 3;
26278        }
26279    "#;
26280
26281    let buffer = cx.new(|cx| Buffer::local(text, cx).with_language(language, cx));
26282    let buffer = cx.new(|cx| MultiBuffer::singleton(buffer, cx));
26283    let (editor, cx) = cx.add_window_view(|window, cx| build_editor(buffer, window, cx));
26284
26285    // Wait for parsing to complete
26286    editor
26287        .condition::<crate::EditorEvent>(cx, |editor, cx| !editor.buffer.read(cx).is_parsing(cx))
26288        .await;
26289
26290    editor.update_in(cx, |editor, window, cx| {
26291        // Start by selecting "let a = 1;" inside the if block
26292        editor.change_selections(SelectionEffects::no_scroll(), window, cx, |s| {
26293            s.select_display_ranges([
26294                DisplayPoint::new(DisplayRow(3), 16)..DisplayPoint::new(DisplayRow(3), 26)
26295            ]);
26296        });
26297
26298        let initial_selection = editor.selections.display_ranges(cx);
26299        assert_eq!(initial_selection.len(), 1, "Should have one selection");
26300
26301        // Test select next sibling - should move up levels to find the next sibling
26302        // Since "let a = 1;" has no siblings in the if block, it should move up
26303        // to find "let b = 2;" which is a sibling of the if block
26304        editor.select_next_syntax_node(&SelectNextSyntaxNode, window, cx);
26305        let next_selection = editor.selections.display_ranges(cx);
26306
26307        // Should have a selection and it should be different from the initial
26308        assert_eq!(
26309            next_selection.len(),
26310            1,
26311            "Should have one selection after next"
26312        );
26313        assert_ne!(
26314            next_selection[0], initial_selection[0],
26315            "Next sibling selection should be different"
26316        );
26317
26318        // Test hierarchical navigation by going to the end of the current function
26319        // and trying to navigate to the next function
26320        editor.change_selections(SelectionEffects::no_scroll(), window, cx, |s| {
26321            s.select_display_ranges([
26322                DisplayPoint::new(DisplayRow(5), 12)..DisplayPoint::new(DisplayRow(5), 22)
26323            ]);
26324        });
26325
26326        editor.select_next_syntax_node(&SelectNextSyntaxNode, window, cx);
26327        let function_next_selection = editor.selections.display_ranges(cx);
26328
26329        // Should move to the next function
26330        assert_eq!(
26331            function_next_selection.len(),
26332            1,
26333            "Should have one selection after function next"
26334        );
26335
26336        // Test select previous sibling navigation
26337        editor.select_prev_syntax_node(&SelectPreviousSyntaxNode, window, cx);
26338        let prev_selection = editor.selections.display_ranges(cx);
26339
26340        // Should have a selection and it should be different
26341        assert_eq!(
26342            prev_selection.len(),
26343            1,
26344            "Should have one selection after prev"
26345        );
26346        assert_ne!(
26347            prev_selection[0], function_next_selection[0],
26348            "Previous sibling selection should be different from next"
26349        );
26350    });
26351}
26352
26353#[gpui::test]
26354async fn test_next_prev_document_highlight(cx: &mut TestAppContext) {
26355    init_test(cx, |_| {});
26356
26357    let mut cx = EditorTestContext::new(cx).await;
26358    cx.set_state(
26359        "let ˇvariable = 42;
26360let another = variable + 1;
26361let result = variable * 2;",
26362    );
26363
26364    // Set up document highlights manually (simulating LSP response)
26365    cx.update_editor(|editor, _window, cx| {
26366        let buffer_snapshot = editor.buffer().read(cx).snapshot(cx);
26367
26368        // Create highlights for "variable" occurrences
26369        let highlight_ranges = [
26370            Point::new(0, 4)..Point::new(0, 12),  // First "variable"
26371            Point::new(1, 14)..Point::new(1, 22), // Second "variable"
26372            Point::new(2, 13)..Point::new(2, 21), // Third "variable"
26373        ];
26374
26375        let anchor_ranges: Vec<_> = highlight_ranges
26376            .iter()
26377            .map(|range| range.clone().to_anchors(&buffer_snapshot))
26378            .collect();
26379
26380        editor.highlight_background::<DocumentHighlightRead>(
26381            &anchor_ranges,
26382            |theme| theme.colors().editor_document_highlight_read_background,
26383            cx,
26384        );
26385    });
26386
26387    // Go to next highlight - should move to second "variable"
26388    cx.update_editor(|editor, window, cx| {
26389        editor.go_to_next_document_highlight(&GoToNextDocumentHighlight, window, cx);
26390    });
26391    cx.assert_editor_state(
26392        "let variable = 42;
26393let another = ˇvariable + 1;
26394let result = variable * 2;",
26395    );
26396
26397    // Go to next highlight - should move to third "variable"
26398    cx.update_editor(|editor, window, cx| {
26399        editor.go_to_next_document_highlight(&GoToNextDocumentHighlight, window, cx);
26400    });
26401    cx.assert_editor_state(
26402        "let variable = 42;
26403let another = variable + 1;
26404let result = ˇvariable * 2;",
26405    );
26406
26407    // Go to next highlight - should stay at third "variable" (no wrap-around)
26408    cx.update_editor(|editor, window, cx| {
26409        editor.go_to_next_document_highlight(&GoToNextDocumentHighlight, window, cx);
26410    });
26411    cx.assert_editor_state(
26412        "let variable = 42;
26413let another = variable + 1;
26414let result = ˇvariable * 2;",
26415    );
26416
26417    // Now test going backwards from third position
26418    cx.update_editor(|editor, window, cx| {
26419        editor.go_to_prev_document_highlight(&GoToPreviousDocumentHighlight, window, cx);
26420    });
26421    cx.assert_editor_state(
26422        "let variable = 42;
26423let another = ˇvariable + 1;
26424let result = variable * 2;",
26425    );
26426
26427    // Go to previous highlight - should move to first "variable"
26428    cx.update_editor(|editor, window, cx| {
26429        editor.go_to_prev_document_highlight(&GoToPreviousDocumentHighlight, window, cx);
26430    });
26431    cx.assert_editor_state(
26432        "let ˇvariable = 42;
26433let another = variable + 1;
26434let result = variable * 2;",
26435    );
26436
26437    // Go to previous highlight - should stay on first "variable"
26438    cx.update_editor(|editor, window, cx| {
26439        editor.go_to_prev_document_highlight(&GoToPreviousDocumentHighlight, window, cx);
26440    });
26441    cx.assert_editor_state(
26442        "let ˇvariable = 42;
26443let another = variable + 1;
26444let result = variable * 2;",
26445    );
26446}
26447
26448#[gpui::test]
26449async fn test_paste_url_from_other_app_creates_markdown_link_over_selected_text(
26450    cx: &mut gpui::TestAppContext,
26451) {
26452    init_test(cx, |_| {});
26453
26454    let url = "https://zed.dev";
26455
26456    let markdown_language = Arc::new(Language::new(
26457        LanguageConfig {
26458            name: "Markdown".into(),
26459            ..LanguageConfig::default()
26460        },
26461        None,
26462    ));
26463
26464    let mut cx = EditorTestContext::new(cx).await;
26465    cx.update_buffer(|buffer, cx| buffer.set_language(Some(markdown_language), cx));
26466    cx.set_state("Hello, «editorˇ».\nZed is «ˇgreat» (see this link: ˇ)");
26467
26468    cx.update_editor(|editor, window, cx| {
26469        cx.write_to_clipboard(ClipboardItem::new_string(url.to_string()));
26470        editor.paste(&Paste, window, cx);
26471    });
26472
26473    cx.assert_editor_state(&format!(
26474        "Hello, [editor]({url})ˇ.\nZed is [great]({url})ˇ (see this link: {url}ˇ)"
26475    ));
26476}
26477
26478#[gpui::test]
26479async fn test_paste_url_from_zed_copy_creates_markdown_link_over_selected_text(
26480    cx: &mut gpui::TestAppContext,
26481) {
26482    init_test(cx, |_| {});
26483
26484    let url = "https://zed.dev";
26485
26486    let markdown_language = Arc::new(Language::new(
26487        LanguageConfig {
26488            name: "Markdown".into(),
26489            ..LanguageConfig::default()
26490        },
26491        None,
26492    ));
26493
26494    let mut cx = EditorTestContext::new(cx).await;
26495    cx.update_buffer(|buffer, cx| buffer.set_language(Some(markdown_language), cx));
26496    cx.set_state(&format!(
26497        "Hello, editor.\nZed is great (see this link: )\n«{url}ˇ»"
26498    ));
26499
26500    cx.update_editor(|editor, window, cx| {
26501        editor.copy(&Copy, window, cx);
26502    });
26503
26504    cx.set_state(&format!(
26505        "Hello, «editorˇ».\nZed is «ˇgreat» (see this link: ˇ)\n{url}"
26506    ));
26507
26508    cx.update_editor(|editor, window, cx| {
26509        editor.paste(&Paste, window, cx);
26510    });
26511
26512    cx.assert_editor_state(&format!(
26513        "Hello, [editor]({url})ˇ.\nZed is [great]({url})ˇ (see this link: {url}ˇ)\n{url}"
26514    ));
26515}
26516
26517#[gpui::test]
26518async fn test_paste_url_from_other_app_replaces_existing_url_without_creating_markdown_link(
26519    cx: &mut gpui::TestAppContext,
26520) {
26521    init_test(cx, |_| {});
26522
26523    let url = "https://zed.dev";
26524
26525    let markdown_language = Arc::new(Language::new(
26526        LanguageConfig {
26527            name: "Markdown".into(),
26528            ..LanguageConfig::default()
26529        },
26530        None,
26531    ));
26532
26533    let mut cx = EditorTestContext::new(cx).await;
26534    cx.update_buffer(|buffer, cx| buffer.set_language(Some(markdown_language), cx));
26535    cx.set_state("Please visit zed's homepage: «https://www.apple.comˇ»");
26536
26537    cx.update_editor(|editor, window, cx| {
26538        cx.write_to_clipboard(ClipboardItem::new_string(url.to_string()));
26539        editor.paste(&Paste, window, cx);
26540    });
26541
26542    cx.assert_editor_state(&format!("Please visit zed's homepage: {url}ˇ"));
26543}
26544
26545#[gpui::test]
26546async fn test_paste_plain_text_from_other_app_replaces_selection_without_creating_markdown_link(
26547    cx: &mut gpui::TestAppContext,
26548) {
26549    init_test(cx, |_| {});
26550
26551    let text = "Awesome";
26552
26553    let markdown_language = Arc::new(Language::new(
26554        LanguageConfig {
26555            name: "Markdown".into(),
26556            ..LanguageConfig::default()
26557        },
26558        None,
26559    ));
26560
26561    let mut cx = EditorTestContext::new(cx).await;
26562    cx.update_buffer(|buffer, cx| buffer.set_language(Some(markdown_language), cx));
26563    cx.set_state("Hello, «editorˇ».\nZed is «ˇgreat»");
26564
26565    cx.update_editor(|editor, window, cx| {
26566        cx.write_to_clipboard(ClipboardItem::new_string(text.to_string()));
26567        editor.paste(&Paste, window, cx);
26568    });
26569
26570    cx.assert_editor_state(&format!("Hello, {text}ˇ.\nZed is {text}ˇ"));
26571}
26572
26573#[gpui::test]
26574async fn test_paste_url_from_other_app_without_creating_markdown_link_in_non_markdown_language(
26575    cx: &mut gpui::TestAppContext,
26576) {
26577    init_test(cx, |_| {});
26578
26579    let url = "https://zed.dev";
26580
26581    let markdown_language = Arc::new(Language::new(
26582        LanguageConfig {
26583            name: "Rust".into(),
26584            ..LanguageConfig::default()
26585        },
26586        None,
26587    ));
26588
26589    let mut cx = EditorTestContext::new(cx).await;
26590    cx.update_buffer(|buffer, cx| buffer.set_language(Some(markdown_language), cx));
26591    cx.set_state("// Hello, «editorˇ».\n// Zed is «ˇgreat» (see this link: ˇ)");
26592
26593    cx.update_editor(|editor, window, cx| {
26594        cx.write_to_clipboard(ClipboardItem::new_string(url.to_string()));
26595        editor.paste(&Paste, window, cx);
26596    });
26597
26598    cx.assert_editor_state(&format!(
26599        "// Hello, {url}ˇ.\n// Zed is {url}ˇ (see this link: {url}ˇ)"
26600    ));
26601}
26602
26603#[gpui::test]
26604async fn test_paste_url_from_other_app_creates_markdown_link_selectively_in_multi_buffer(
26605    cx: &mut TestAppContext,
26606) {
26607    init_test(cx, |_| {});
26608
26609    let url = "https://zed.dev";
26610
26611    let markdown_language = Arc::new(Language::new(
26612        LanguageConfig {
26613            name: "Markdown".into(),
26614            ..LanguageConfig::default()
26615        },
26616        None,
26617    ));
26618
26619    let (editor, cx) = cx.add_window_view(|window, cx| {
26620        let multi_buffer = MultiBuffer::build_multi(
26621            [
26622                ("this will embed -> link", vec![Point::row_range(0..1)]),
26623                ("this will replace -> link", vec![Point::row_range(0..1)]),
26624            ],
26625            cx,
26626        );
26627        let mut editor = Editor::new(EditorMode::full(), multi_buffer.clone(), None, window, cx);
26628        editor.change_selections(SelectionEffects::no_scroll(), window, cx, |s| {
26629            s.select_ranges(vec![
26630                Point::new(0, 19)..Point::new(0, 23),
26631                Point::new(1, 21)..Point::new(1, 25),
26632            ])
26633        });
26634        let first_buffer_id = multi_buffer
26635            .read(cx)
26636            .excerpt_buffer_ids()
26637            .into_iter()
26638            .next()
26639            .unwrap();
26640        let first_buffer = multi_buffer.read(cx).buffer(first_buffer_id).unwrap();
26641        first_buffer.update(cx, |buffer, cx| {
26642            buffer.set_language(Some(markdown_language.clone()), cx);
26643        });
26644
26645        editor
26646    });
26647    let mut cx = EditorTestContext::for_editor_in(editor.clone(), cx).await;
26648
26649    cx.update_editor(|editor, window, cx| {
26650        cx.write_to_clipboard(ClipboardItem::new_string(url.to_string()));
26651        editor.paste(&Paste, window, cx);
26652    });
26653
26654    cx.assert_editor_state(&format!(
26655        "this will embed -> [link]({url}\nthis will replace -> {url}ˇ"
26656    ));
26657}
26658
26659#[gpui::test]
26660async fn test_race_in_multibuffer_save(cx: &mut TestAppContext) {
26661    init_test(cx, |_| {});
26662
26663    let fs = FakeFs::new(cx.executor());
26664    fs.insert_tree(
26665        path!("/project"),
26666        json!({
26667            "first.rs": "# First Document\nSome content here.",
26668            "second.rs": "Plain text content for second file.",
26669        }),
26670    )
26671    .await;
26672
26673    let project = Project::test(fs, [path!("/project").as_ref()], cx).await;
26674    let workspace = cx.add_window(|window, cx| Workspace::test_new(project.clone(), window, cx));
26675    let cx = &mut VisualTestContext::from_window(*workspace, cx);
26676
26677    let language = rust_lang();
26678    let language_registry = project.read_with(cx, |project, _| project.languages().clone());
26679    language_registry.add(language.clone());
26680    let mut fake_servers = language_registry.register_fake_lsp(
26681        "Rust",
26682        FakeLspAdapter {
26683            ..FakeLspAdapter::default()
26684        },
26685    );
26686
26687    let buffer1 = project
26688        .update(cx, |project, cx| {
26689            project.open_local_buffer(PathBuf::from(path!("/project/first.rs")), cx)
26690        })
26691        .await
26692        .unwrap();
26693    let buffer2 = project
26694        .update(cx, |project, cx| {
26695            project.open_local_buffer(PathBuf::from(path!("/project/second.rs")), cx)
26696        })
26697        .await
26698        .unwrap();
26699
26700    let multi_buffer = cx.new(|cx| {
26701        let mut multi_buffer = MultiBuffer::new(Capability::ReadWrite);
26702        multi_buffer.set_excerpts_for_path(
26703            PathKey::for_buffer(&buffer1, cx),
26704            buffer1.clone(),
26705            [Point::zero()..buffer1.read(cx).max_point()],
26706            3,
26707            cx,
26708        );
26709        multi_buffer.set_excerpts_for_path(
26710            PathKey::for_buffer(&buffer2, cx),
26711            buffer2.clone(),
26712            [Point::zero()..buffer1.read(cx).max_point()],
26713            3,
26714            cx,
26715        );
26716        multi_buffer
26717    });
26718
26719    let (editor, cx) = cx.add_window_view(|window, cx| {
26720        Editor::new(
26721            EditorMode::full(),
26722            multi_buffer,
26723            Some(project.clone()),
26724            window,
26725            cx,
26726        )
26727    });
26728
26729    let fake_language_server = fake_servers.next().await.unwrap();
26730
26731    buffer1.update(cx, |buffer, cx| buffer.edit([(0..0, "hello!")], None, cx));
26732
26733    let save = editor.update_in(cx, |editor, window, cx| {
26734        assert!(editor.is_dirty(cx));
26735
26736        editor.save(
26737            SaveOptions {
26738                format: true,
26739                autosave: true,
26740            },
26741            project,
26742            window,
26743            cx,
26744        )
26745    });
26746    let (start_edit_tx, start_edit_rx) = oneshot::channel();
26747    let (done_edit_tx, done_edit_rx) = oneshot::channel();
26748    let mut done_edit_rx = Some(done_edit_rx);
26749    let mut start_edit_tx = Some(start_edit_tx);
26750
26751    fake_language_server.set_request_handler::<lsp::request::Formatting, _, _>(move |_, _| {
26752        start_edit_tx.take().unwrap().send(()).unwrap();
26753        let done_edit_rx = done_edit_rx.take().unwrap();
26754        async move {
26755            done_edit_rx.await.unwrap();
26756            Ok(None)
26757        }
26758    });
26759
26760    start_edit_rx.await.unwrap();
26761    buffer2
26762        .update(cx, |buffer, cx| buffer.edit([(0..0, "world!")], None, cx))
26763        .unwrap();
26764
26765    done_edit_tx.send(()).unwrap();
26766
26767    save.await.unwrap();
26768    cx.update(|_, cx| assert!(editor.is_dirty(cx)));
26769}
26770
26771#[track_caller]
26772fn extract_color_inlays(editor: &Editor, cx: &App) -> Vec<Rgba> {
26773    editor
26774        .all_inlays(cx)
26775        .into_iter()
26776        .filter_map(|inlay| inlay.get_color())
26777        .map(Rgba::from)
26778        .collect()
26779}
26780
26781#[gpui::test]
26782fn test_duplicate_line_up_on_last_line_without_newline(cx: &mut TestAppContext) {
26783    init_test(cx, |_| {});
26784
26785    let editor = cx.add_window(|window, cx| {
26786        let buffer = MultiBuffer::build_simple("line1\nline2", cx);
26787        build_editor(buffer, window, cx)
26788    });
26789
26790    editor
26791        .update(cx, |editor, window, cx| {
26792            editor.change_selections(SelectionEffects::no_scroll(), window, cx, |s| {
26793                s.select_display_ranges([
26794                    DisplayPoint::new(DisplayRow(1), 0)..DisplayPoint::new(DisplayRow(1), 0)
26795                ])
26796            });
26797
26798            editor.duplicate_line_up(&DuplicateLineUp, window, cx);
26799
26800            assert_eq!(
26801                editor.display_text(cx),
26802                "line1\nline2\nline2",
26803                "Duplicating last line upward should create duplicate above, not on same line"
26804            );
26805
26806            assert_eq!(
26807                editor.selections.display_ranges(cx),
26808                vec![DisplayPoint::new(DisplayRow(1), 0)..DisplayPoint::new(DisplayRow(1), 0)],
26809                "Selection should remain on the original line"
26810            );
26811        })
26812        .unwrap();
26813}
26814
26815#[gpui::test]
26816async fn test_copy_line_without_trailing_newline(cx: &mut TestAppContext) {
26817    init_test(cx, |_| {});
26818
26819    let mut cx = EditorTestContext::new(cx).await;
26820
26821    cx.set_state("line1\nline2ˇ");
26822
26823    cx.update_editor(|e, window, cx| e.copy(&Copy, window, cx));
26824
26825    let clipboard_text = cx
26826        .read_from_clipboard()
26827        .and_then(|item| item.text().as_deref().map(str::to_string));
26828
26829    assert_eq!(
26830        clipboard_text,
26831        Some("line2\n".to_string()),
26832        "Copying a line without trailing newline should include a newline"
26833    );
26834
26835    cx.set_state("line1\nˇ");
26836
26837    cx.update_editor(|e, window, cx| e.paste(&Paste, window, cx));
26838
26839    cx.assert_editor_state("line1\nline2\nˇ");
26840}
26841
26842#[gpui::test]
26843async fn test_end_of_editor_context(cx: &mut TestAppContext) {
26844    init_test(cx, |_| {});
26845
26846    let mut cx = EditorTestContext::new(cx).await;
26847
26848    cx.set_state("line1\nline2ˇ");
26849    cx.update_editor(|e, window, cx| {
26850        e.set_mode(EditorMode::SingleLine);
26851        assert!(e.key_context(window, cx).contains("end_of_input"));
26852    });
26853    cx.set_state("ˇline1\nline2");
26854    cx.update_editor(|e, window, cx| {
26855        assert!(!e.key_context(window, cx).contains("end_of_input"));
26856    });
26857    cx.set_state("line1ˇ\nline2");
26858    cx.update_editor(|e, window, cx| {
26859        assert!(!e.key_context(window, cx).contains("end_of_input"));
26860    });
26861}