editor_tests.rs

    1use super::*;
    2use crate::{
    3    JoinLines,
    4    scroll::scroll_amount::ScrollAmount,
    5    test::{
    6        assert_text_with_selections, build_editor,
    7        editor_lsp_test_context::{EditorLspTestContext, git_commit_lang},
    8        editor_test_context::EditorTestContext,
    9        select_ranges,
   10    },
   11};
   12use buffer_diff::{BufferDiff, DiffHunkSecondaryStatus, DiffHunkStatus, DiffHunkStatusKind};
   13use futures::StreamExt;
   14use gpui::{
   15    BackgroundExecutor, DismissEvent, SemanticVersion, TestAppContext, UpdateGlobal,
   16    VisualTestContext, WindowBounds, WindowOptions, div,
   17};
   18use indoc::indoc;
   19use language::{
   20    BracketPairConfig,
   21    Capability::ReadWrite,
   22    FakeLspAdapter, LanguageConfig, LanguageConfigOverride, LanguageMatcher, LanguageName,
   23    Override, Point,
   24    language_settings::{
   25        AllLanguageSettings, AllLanguageSettingsContent, CompletionSettings,
   26        LanguageSettingsContent, LspInsertMode, PrettierSettings,
   27    },
   28};
   29use language_settings::{Formatter, FormatterList, IndentGuideSettings};
   30use lsp::CompletionParams;
   31use multi_buffer::{IndentGuide, PathKey};
   32use parking_lot::Mutex;
   33use pretty_assertions::{assert_eq, assert_ne};
   34use project::{
   35    FakeFs,
   36    debugger::breakpoint_store::{BreakpointState, SourceBreakpoint},
   37    project_settings::{LspSettings, ProjectSettings},
   38};
   39use serde_json::{self, json};
   40use std::{cell::RefCell, future::Future, rc::Rc, sync::atomic::AtomicBool, time::Instant};
   41use std::{
   42    iter,
   43    sync::atomic::{self, AtomicUsize},
   44};
   45use test::{build_editor_with_project, editor_lsp_test_context::rust_lang};
   46use text::ToPoint as _;
   47use unindent::Unindent;
   48use util::{
   49    assert_set_eq, path,
   50    test::{TextRangeMarker, marked_text_ranges, marked_text_ranges_by, sample_text},
   51    uri,
   52};
   53use workspace::{
   54    CloseAllItems, CloseInactiveItems, NavigationEntry, ViewId,
   55    item::{FollowEvent, FollowableItem, Item, ItemHandle},
   56};
   57
   58#[gpui::test]
   59fn test_edit_events(cx: &mut TestAppContext) {
   60    init_test(cx, |_| {});
   61
   62    let buffer = cx.new(|cx| {
   63        let mut buffer = language::Buffer::local("123456", cx);
   64        buffer.set_group_interval(Duration::from_secs(1));
   65        buffer
   66    });
   67
   68    let events = Rc::new(RefCell::new(Vec::new()));
   69    let editor1 = cx.add_window({
   70        let events = events.clone();
   71        |window, cx| {
   72            let entity = cx.entity().clone();
   73            cx.subscribe_in(
   74                &entity,
   75                window,
   76                move |_, _, event: &EditorEvent, _, _| match event {
   77                    EditorEvent::Edited { .. } => events.borrow_mut().push(("editor1", "edited")),
   78                    EditorEvent::BufferEdited => {
   79                        events.borrow_mut().push(("editor1", "buffer edited"))
   80                    }
   81                    _ => {}
   82                },
   83            )
   84            .detach();
   85            Editor::for_buffer(buffer.clone(), None, window, cx)
   86        }
   87    });
   88
   89    let editor2 = cx.add_window({
   90        let events = events.clone();
   91        |window, cx| {
   92            cx.subscribe_in(
   93                &cx.entity().clone(),
   94                window,
   95                move |_, _, event: &EditorEvent, _, _| match event {
   96                    EditorEvent::Edited { .. } => events.borrow_mut().push(("editor2", "edited")),
   97                    EditorEvent::BufferEdited => {
   98                        events.borrow_mut().push(("editor2", "buffer edited"))
   99                    }
  100                    _ => {}
  101                },
  102            )
  103            .detach();
  104            Editor::for_buffer(buffer.clone(), None, window, cx)
  105        }
  106    });
  107
  108    assert_eq!(mem::take(&mut *events.borrow_mut()), []);
  109
  110    // Mutating editor 1 will emit an `Edited` event only for that editor.
  111    _ = editor1.update(cx, |editor, window, cx| editor.insert("X", window, cx));
  112    assert_eq!(
  113        mem::take(&mut *events.borrow_mut()),
  114        [
  115            ("editor1", "edited"),
  116            ("editor1", "buffer edited"),
  117            ("editor2", "buffer edited"),
  118        ]
  119    );
  120
  121    // Mutating editor 2 will emit an `Edited` event only for that editor.
  122    _ = editor2.update(cx, |editor, window, cx| editor.delete(&Delete, window, cx));
  123    assert_eq!(
  124        mem::take(&mut *events.borrow_mut()),
  125        [
  126            ("editor2", "edited"),
  127            ("editor1", "buffer edited"),
  128            ("editor2", "buffer edited"),
  129        ]
  130    );
  131
  132    // Undoing on editor 1 will emit an `Edited` event only for that editor.
  133    _ = editor1.update(cx, |editor, window, cx| editor.undo(&Undo, window, cx));
  134    assert_eq!(
  135        mem::take(&mut *events.borrow_mut()),
  136        [
  137            ("editor1", "edited"),
  138            ("editor1", "buffer edited"),
  139            ("editor2", "buffer edited"),
  140        ]
  141    );
  142
  143    // Redoing on editor 1 will emit an `Edited` event only for that editor.
  144    _ = editor1.update(cx, |editor, window, cx| editor.redo(&Redo, window, cx));
  145    assert_eq!(
  146        mem::take(&mut *events.borrow_mut()),
  147        [
  148            ("editor1", "edited"),
  149            ("editor1", "buffer edited"),
  150            ("editor2", "buffer edited"),
  151        ]
  152    );
  153
  154    // Undoing on editor 2 will emit an `Edited` event only for that editor.
  155    _ = editor2.update(cx, |editor, window, cx| editor.undo(&Undo, window, cx));
  156    assert_eq!(
  157        mem::take(&mut *events.borrow_mut()),
  158        [
  159            ("editor2", "edited"),
  160            ("editor1", "buffer edited"),
  161            ("editor2", "buffer edited"),
  162        ]
  163    );
  164
  165    // Redoing on editor 2 will emit an `Edited` event only for that editor.
  166    _ = editor2.update(cx, |editor, window, cx| editor.redo(&Redo, window, cx));
  167    assert_eq!(
  168        mem::take(&mut *events.borrow_mut()),
  169        [
  170            ("editor2", "edited"),
  171            ("editor1", "buffer edited"),
  172            ("editor2", "buffer edited"),
  173        ]
  174    );
  175
  176    // No event is emitted when the mutation is a no-op.
  177    _ = editor2.update(cx, |editor, window, cx| {
  178        editor.change_selections(None, window, cx, |s| s.select_ranges([0..0]));
  179
  180        editor.backspace(&Backspace, window, cx);
  181    });
  182    assert_eq!(mem::take(&mut *events.borrow_mut()), []);
  183}
  184
  185#[gpui::test]
  186fn test_undo_redo_with_selection_restoration(cx: &mut TestAppContext) {
  187    init_test(cx, |_| {});
  188
  189    let mut now = Instant::now();
  190    let group_interval = Duration::from_millis(1);
  191    let buffer = cx.new(|cx| {
  192        let mut buf = language::Buffer::local("123456", cx);
  193        buf.set_group_interval(group_interval);
  194        buf
  195    });
  196    let buffer = cx.new(|cx| MultiBuffer::singleton(buffer, cx));
  197    let editor = cx.add_window(|window, cx| build_editor(buffer.clone(), window, cx));
  198
  199    _ = editor.update(cx, |editor, window, cx| {
  200        editor.start_transaction_at(now, window, cx);
  201        editor.change_selections(None, window, cx, |s| s.select_ranges([2..4]));
  202
  203        editor.insert("cd", window, cx);
  204        editor.end_transaction_at(now, cx);
  205        assert_eq!(editor.text(cx), "12cd56");
  206        assert_eq!(editor.selections.ranges(cx), vec![4..4]);
  207
  208        editor.start_transaction_at(now, window, cx);
  209        editor.change_selections(None, window, cx, |s| s.select_ranges([4..5]));
  210        editor.insert("e", window, cx);
  211        editor.end_transaction_at(now, cx);
  212        assert_eq!(editor.text(cx), "12cde6");
  213        assert_eq!(editor.selections.ranges(cx), vec![5..5]);
  214
  215        now += group_interval + Duration::from_millis(1);
  216        editor.change_selections(None, window, cx, |s| s.select_ranges([2..2]));
  217
  218        // Simulate an edit in another editor
  219        buffer.update(cx, |buffer, cx| {
  220            buffer.start_transaction_at(now, cx);
  221            buffer.edit([(0..1, "a")], None, cx);
  222            buffer.edit([(1..1, "b")], None, cx);
  223            buffer.end_transaction_at(now, cx);
  224        });
  225
  226        assert_eq!(editor.text(cx), "ab2cde6");
  227        assert_eq!(editor.selections.ranges(cx), vec![3..3]);
  228
  229        // Last transaction happened past the group interval in a different editor.
  230        // Undo it individually and don't restore selections.
  231        editor.undo(&Undo, window, cx);
  232        assert_eq!(editor.text(cx), "12cde6");
  233        assert_eq!(editor.selections.ranges(cx), vec![2..2]);
  234
  235        // First two transactions happened within the group interval in this editor.
  236        // Undo them together and restore selections.
  237        editor.undo(&Undo, window, cx);
  238        editor.undo(&Undo, window, cx); // Undo stack is empty here, so this is a no-op.
  239        assert_eq!(editor.text(cx), "123456");
  240        assert_eq!(editor.selections.ranges(cx), vec![0..0]);
  241
  242        // Redo the first two transactions together.
  243        editor.redo(&Redo, window, cx);
  244        assert_eq!(editor.text(cx), "12cde6");
  245        assert_eq!(editor.selections.ranges(cx), vec![5..5]);
  246
  247        // Redo the last transaction on its own.
  248        editor.redo(&Redo, window, cx);
  249        assert_eq!(editor.text(cx), "ab2cde6");
  250        assert_eq!(editor.selections.ranges(cx), vec![6..6]);
  251
  252        // Test empty transactions.
  253        editor.start_transaction_at(now, window, cx);
  254        editor.end_transaction_at(now, cx);
  255        editor.undo(&Undo, window, cx);
  256        assert_eq!(editor.text(cx), "12cde6");
  257    });
  258}
  259
  260#[gpui::test]
  261fn test_ime_composition(cx: &mut TestAppContext) {
  262    init_test(cx, |_| {});
  263
  264    let buffer = cx.new(|cx| {
  265        let mut buffer = language::Buffer::local("abcde", cx);
  266        // Ensure automatic grouping doesn't occur.
  267        buffer.set_group_interval(Duration::ZERO);
  268        buffer
  269    });
  270
  271    let buffer = cx.new(|cx| MultiBuffer::singleton(buffer, cx));
  272    cx.add_window(|window, cx| {
  273        let mut editor = build_editor(buffer.clone(), window, cx);
  274
  275        // Start a new IME composition.
  276        editor.replace_and_mark_text_in_range(Some(0..1), "à", None, window, cx);
  277        editor.replace_and_mark_text_in_range(Some(0..1), "á", None, window, cx);
  278        editor.replace_and_mark_text_in_range(Some(0..1), "ä", None, window, cx);
  279        assert_eq!(editor.text(cx), "äbcde");
  280        assert_eq!(
  281            editor.marked_text_ranges(cx),
  282            Some(vec![OffsetUtf16(0)..OffsetUtf16(1)])
  283        );
  284
  285        // Finalize IME composition.
  286        editor.replace_text_in_range(None, "ā", window, cx);
  287        assert_eq!(editor.text(cx), "ābcde");
  288        assert_eq!(editor.marked_text_ranges(cx), None);
  289
  290        // IME composition edits are grouped and are undone/redone at once.
  291        editor.undo(&Default::default(), window, cx);
  292        assert_eq!(editor.text(cx), "abcde");
  293        assert_eq!(editor.marked_text_ranges(cx), None);
  294        editor.redo(&Default::default(), window, cx);
  295        assert_eq!(editor.text(cx), "ābcde");
  296        assert_eq!(editor.marked_text_ranges(cx), None);
  297
  298        // Start a new IME composition.
  299        editor.replace_and_mark_text_in_range(Some(0..1), "à", None, window, cx);
  300        assert_eq!(
  301            editor.marked_text_ranges(cx),
  302            Some(vec![OffsetUtf16(0)..OffsetUtf16(1)])
  303        );
  304
  305        // Undoing during an IME composition cancels it.
  306        editor.undo(&Default::default(), window, cx);
  307        assert_eq!(editor.text(cx), "ābcde");
  308        assert_eq!(editor.marked_text_ranges(cx), None);
  309
  310        // Start a new IME composition with an invalid marked range, ensuring it gets clipped.
  311        editor.replace_and_mark_text_in_range(Some(4..999), "è", None, window, cx);
  312        assert_eq!(editor.text(cx), "ābcdè");
  313        assert_eq!(
  314            editor.marked_text_ranges(cx),
  315            Some(vec![OffsetUtf16(4)..OffsetUtf16(5)])
  316        );
  317
  318        // Finalize IME composition with an invalid replacement range, ensuring it gets clipped.
  319        editor.replace_text_in_range(Some(4..999), "ę", window, cx);
  320        assert_eq!(editor.text(cx), "ābcdę");
  321        assert_eq!(editor.marked_text_ranges(cx), None);
  322
  323        // Start a new IME composition with multiple cursors.
  324        editor.change_selections(None, window, cx, |s| {
  325            s.select_ranges([
  326                OffsetUtf16(1)..OffsetUtf16(1),
  327                OffsetUtf16(3)..OffsetUtf16(3),
  328                OffsetUtf16(5)..OffsetUtf16(5),
  329            ])
  330        });
  331        editor.replace_and_mark_text_in_range(Some(4..5), "XYZ", None, window, cx);
  332        assert_eq!(editor.text(cx), "XYZbXYZdXYZ");
  333        assert_eq!(
  334            editor.marked_text_ranges(cx),
  335            Some(vec![
  336                OffsetUtf16(0)..OffsetUtf16(3),
  337                OffsetUtf16(4)..OffsetUtf16(7),
  338                OffsetUtf16(8)..OffsetUtf16(11)
  339            ])
  340        );
  341
  342        // Ensure the newly-marked range gets treated as relative to the previously-marked ranges.
  343        editor.replace_and_mark_text_in_range(Some(1..2), "1", None, window, cx);
  344        assert_eq!(editor.text(cx), "X1ZbX1ZdX1Z");
  345        assert_eq!(
  346            editor.marked_text_ranges(cx),
  347            Some(vec![
  348                OffsetUtf16(1)..OffsetUtf16(2),
  349                OffsetUtf16(5)..OffsetUtf16(6),
  350                OffsetUtf16(9)..OffsetUtf16(10)
  351            ])
  352        );
  353
  354        // Finalize IME composition with multiple cursors.
  355        editor.replace_text_in_range(Some(9..10), "2", window, cx);
  356        assert_eq!(editor.text(cx), "X2ZbX2ZdX2Z");
  357        assert_eq!(editor.marked_text_ranges(cx), None);
  358
  359        editor
  360    });
  361}
  362
  363#[gpui::test]
  364fn test_selection_with_mouse(cx: &mut TestAppContext) {
  365    init_test(cx, |_| {});
  366
  367    let editor = cx.add_window(|window, cx| {
  368        let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\nddddddd\n", cx);
  369        build_editor(buffer, window, cx)
  370    });
  371
  372    _ = editor.update(cx, |editor, window, cx| {
  373        editor.begin_selection(DisplayPoint::new(DisplayRow(2), 2), false, 1, window, cx);
  374    });
  375    assert_eq!(
  376        editor
  377            .update(cx, |editor, _, cx| editor.selections.display_ranges(cx))
  378            .unwrap(),
  379        [DisplayPoint::new(DisplayRow(2), 2)..DisplayPoint::new(DisplayRow(2), 2)]
  380    );
  381
  382    _ = editor.update(cx, |editor, window, cx| {
  383        editor.update_selection(
  384            DisplayPoint::new(DisplayRow(3), 3),
  385            0,
  386            gpui::Point::<f32>::default(),
  387            window,
  388            cx,
  389        );
  390    });
  391
  392    assert_eq!(
  393        editor
  394            .update(cx, |editor, _, cx| editor.selections.display_ranges(cx))
  395            .unwrap(),
  396        [DisplayPoint::new(DisplayRow(2), 2)..DisplayPoint::new(DisplayRow(3), 3)]
  397    );
  398
  399    _ = editor.update(cx, |editor, window, cx| {
  400        editor.update_selection(
  401            DisplayPoint::new(DisplayRow(1), 1),
  402            0,
  403            gpui::Point::<f32>::default(),
  404            window,
  405            cx,
  406        );
  407    });
  408
  409    assert_eq!(
  410        editor
  411            .update(cx, |editor, _, cx| editor.selections.display_ranges(cx))
  412            .unwrap(),
  413        [DisplayPoint::new(DisplayRow(2), 2)..DisplayPoint::new(DisplayRow(1), 1)]
  414    );
  415
  416    _ = editor.update(cx, |editor, window, cx| {
  417        editor.end_selection(window, cx);
  418        editor.update_selection(
  419            DisplayPoint::new(DisplayRow(3), 3),
  420            0,
  421            gpui::Point::<f32>::default(),
  422            window,
  423            cx,
  424        );
  425    });
  426
  427    assert_eq!(
  428        editor
  429            .update(cx, |editor, _, cx| editor.selections.display_ranges(cx))
  430            .unwrap(),
  431        [DisplayPoint::new(DisplayRow(2), 2)..DisplayPoint::new(DisplayRow(1), 1)]
  432    );
  433
  434    _ = editor.update(cx, |editor, window, cx| {
  435        editor.begin_selection(DisplayPoint::new(DisplayRow(3), 3), true, 1, window, cx);
  436        editor.update_selection(
  437            DisplayPoint::new(DisplayRow(0), 0),
  438            0,
  439            gpui::Point::<f32>::default(),
  440            window,
  441            cx,
  442        );
  443    });
  444
  445    assert_eq!(
  446        editor
  447            .update(cx, |editor, _, cx| editor.selections.display_ranges(cx))
  448            .unwrap(),
  449        [
  450            DisplayPoint::new(DisplayRow(2), 2)..DisplayPoint::new(DisplayRow(1), 1),
  451            DisplayPoint::new(DisplayRow(3), 3)..DisplayPoint::new(DisplayRow(0), 0)
  452        ]
  453    );
  454
  455    _ = editor.update(cx, |editor, window, cx| {
  456        editor.end_selection(window, cx);
  457    });
  458
  459    assert_eq!(
  460        editor
  461            .update(cx, |editor, _, cx| editor.selections.display_ranges(cx))
  462            .unwrap(),
  463        [DisplayPoint::new(DisplayRow(3), 3)..DisplayPoint::new(DisplayRow(0), 0)]
  464    );
  465}
  466
  467#[gpui::test]
  468fn test_multiple_cursor_removal(cx: &mut TestAppContext) {
  469    init_test(cx, |_| {});
  470
  471    let editor = cx.add_window(|window, cx| {
  472        let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\nddddddd\n", cx);
  473        build_editor(buffer, window, cx)
  474    });
  475
  476    _ = editor.update(cx, |editor, window, cx| {
  477        editor.begin_selection(DisplayPoint::new(DisplayRow(2), 1), false, 1, window, cx);
  478    });
  479
  480    _ = editor.update(cx, |editor, window, cx| {
  481        editor.end_selection(window, cx);
  482    });
  483
  484    _ = editor.update(cx, |editor, window, cx| {
  485        editor.begin_selection(DisplayPoint::new(DisplayRow(3), 2), true, 1, window, cx);
  486    });
  487
  488    _ = editor.update(cx, |editor, window, cx| {
  489        editor.end_selection(window, cx);
  490    });
  491
  492    assert_eq!(
  493        editor
  494            .update(cx, |editor, _, cx| editor.selections.display_ranges(cx))
  495            .unwrap(),
  496        [
  497            DisplayPoint::new(DisplayRow(2), 1)..DisplayPoint::new(DisplayRow(2), 1),
  498            DisplayPoint::new(DisplayRow(3), 2)..DisplayPoint::new(DisplayRow(3), 2)
  499        ]
  500    );
  501
  502    _ = editor.update(cx, |editor, window, cx| {
  503        editor.begin_selection(DisplayPoint::new(DisplayRow(2), 1), true, 1, window, cx);
  504    });
  505
  506    _ = editor.update(cx, |editor, window, cx| {
  507        editor.end_selection(window, cx);
  508    });
  509
  510    assert_eq!(
  511        editor
  512            .update(cx, |editor, _, cx| editor.selections.display_ranges(cx))
  513            .unwrap(),
  514        [DisplayPoint::new(DisplayRow(3), 2)..DisplayPoint::new(DisplayRow(3), 2)]
  515    );
  516}
  517
  518#[gpui::test]
  519fn test_canceling_pending_selection(cx: &mut TestAppContext) {
  520    init_test(cx, |_| {});
  521
  522    let editor = cx.add_window(|window, cx| {
  523        let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
  524        build_editor(buffer, window, cx)
  525    });
  526
  527    _ = editor.update(cx, |editor, window, cx| {
  528        editor.begin_selection(DisplayPoint::new(DisplayRow(2), 2), false, 1, window, cx);
  529        assert_eq!(
  530            editor.selections.display_ranges(cx),
  531            [DisplayPoint::new(DisplayRow(2), 2)..DisplayPoint::new(DisplayRow(2), 2)]
  532        );
  533    });
  534
  535    _ = editor.update(cx, |editor, window, cx| {
  536        editor.update_selection(
  537            DisplayPoint::new(DisplayRow(3), 3),
  538            0,
  539            gpui::Point::<f32>::default(),
  540            window,
  541            cx,
  542        );
  543        assert_eq!(
  544            editor.selections.display_ranges(cx),
  545            [DisplayPoint::new(DisplayRow(2), 2)..DisplayPoint::new(DisplayRow(3), 3)]
  546        );
  547    });
  548
  549    _ = editor.update(cx, |editor, window, cx| {
  550        editor.cancel(&Cancel, window, cx);
  551        editor.update_selection(
  552            DisplayPoint::new(DisplayRow(1), 1),
  553            0,
  554            gpui::Point::<f32>::default(),
  555            window,
  556            cx,
  557        );
  558        assert_eq!(
  559            editor.selections.display_ranges(cx),
  560            [DisplayPoint::new(DisplayRow(2), 2)..DisplayPoint::new(DisplayRow(3), 3)]
  561        );
  562    });
  563}
  564
  565#[gpui::test]
  566fn test_movement_actions_with_pending_selection(cx: &mut TestAppContext) {
  567    init_test(cx, |_| {});
  568
  569    let editor = cx.add_window(|window, cx| {
  570        let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
  571        build_editor(buffer, window, cx)
  572    });
  573
  574    _ = editor.update(cx, |editor, window, cx| {
  575        editor.begin_selection(DisplayPoint::new(DisplayRow(2), 2), false, 1, window, cx);
  576        assert_eq!(
  577            editor.selections.display_ranges(cx),
  578            [DisplayPoint::new(DisplayRow(2), 2)..DisplayPoint::new(DisplayRow(2), 2)]
  579        );
  580
  581        editor.move_down(&Default::default(), window, cx);
  582        assert_eq!(
  583            editor.selections.display_ranges(cx),
  584            [DisplayPoint::new(DisplayRow(3), 2)..DisplayPoint::new(DisplayRow(3), 2)]
  585        );
  586
  587        editor.begin_selection(DisplayPoint::new(DisplayRow(2), 2), false, 1, window, cx);
  588        assert_eq!(
  589            editor.selections.display_ranges(cx),
  590            [DisplayPoint::new(DisplayRow(2), 2)..DisplayPoint::new(DisplayRow(2), 2)]
  591        );
  592
  593        editor.move_up(&Default::default(), window, cx);
  594        assert_eq!(
  595            editor.selections.display_ranges(cx),
  596            [DisplayPoint::new(DisplayRow(1), 2)..DisplayPoint::new(DisplayRow(1), 2)]
  597        );
  598    });
  599}
  600
  601#[gpui::test]
  602fn test_clone(cx: &mut TestAppContext) {
  603    init_test(cx, |_| {});
  604
  605    let (text, selection_ranges) = marked_text_ranges(
  606        indoc! {"
  607            one
  608            two
  609            threeˇ
  610            four
  611            fiveˇ
  612        "},
  613        true,
  614    );
  615
  616    let editor = cx.add_window(|window, cx| {
  617        let buffer = MultiBuffer::build_simple(&text, cx);
  618        build_editor(buffer, window, cx)
  619    });
  620
  621    _ = editor.update(cx, |editor, window, cx| {
  622        editor.change_selections(None, window, cx, |s| {
  623            s.select_ranges(selection_ranges.clone())
  624        });
  625        editor.fold_creases(
  626            vec![
  627                Crease::simple(Point::new(1, 0)..Point::new(2, 0), FoldPlaceholder::test()),
  628                Crease::simple(Point::new(3, 0)..Point::new(4, 0), FoldPlaceholder::test()),
  629            ],
  630            true,
  631            window,
  632            cx,
  633        );
  634    });
  635
  636    let cloned_editor = editor
  637        .update(cx, |editor, _, cx| {
  638            cx.open_window(Default::default(), |window, cx| {
  639                cx.new(|cx| editor.clone(window, cx))
  640            })
  641        })
  642        .unwrap()
  643        .unwrap();
  644
  645    let snapshot = editor
  646        .update(cx, |e, window, cx| e.snapshot(window, cx))
  647        .unwrap();
  648    let cloned_snapshot = cloned_editor
  649        .update(cx, |e, window, cx| e.snapshot(window, cx))
  650        .unwrap();
  651
  652    assert_eq!(
  653        cloned_editor
  654            .update(cx, |e, _, cx| e.display_text(cx))
  655            .unwrap(),
  656        editor.update(cx, |e, _, cx| e.display_text(cx)).unwrap()
  657    );
  658    assert_eq!(
  659        cloned_snapshot
  660            .folds_in_range(0..text.len())
  661            .collect::<Vec<_>>(),
  662        snapshot.folds_in_range(0..text.len()).collect::<Vec<_>>(),
  663    );
  664    assert_set_eq!(
  665        cloned_editor
  666            .update(cx, |editor, _, cx| editor.selections.ranges::<Point>(cx))
  667            .unwrap(),
  668        editor
  669            .update(cx, |editor, _, cx| editor.selections.ranges(cx))
  670            .unwrap()
  671    );
  672    assert_set_eq!(
  673        cloned_editor
  674            .update(cx, |e, _window, cx| e.selections.display_ranges(cx))
  675            .unwrap(),
  676        editor
  677            .update(cx, |e, _, cx| e.selections.display_ranges(cx))
  678            .unwrap()
  679    );
  680}
  681
  682#[gpui::test]
  683async fn test_navigation_history(cx: &mut TestAppContext) {
  684    init_test(cx, |_| {});
  685
  686    use workspace::item::Item;
  687
  688    let fs = FakeFs::new(cx.executor());
  689    let project = Project::test(fs, [], cx).await;
  690    let workspace = cx.add_window(|window, cx| Workspace::test_new(project, window, cx));
  691    let pane = workspace
  692        .update(cx, |workspace, _, _| workspace.active_pane().clone())
  693        .unwrap();
  694
  695    _ = workspace.update(cx, |_v, window, cx| {
  696        cx.new(|cx| {
  697            let buffer = MultiBuffer::build_simple(&sample_text(300, 5, 'a'), cx);
  698            let mut editor = build_editor(buffer.clone(), window, cx);
  699            let handle = cx.entity();
  700            editor.set_nav_history(Some(pane.read(cx).nav_history_for_item(&handle)));
  701
  702            fn pop_history(editor: &mut Editor, cx: &mut App) -> Option<NavigationEntry> {
  703                editor.nav_history.as_mut().unwrap().pop_backward(cx)
  704            }
  705
  706            // Move the cursor a small distance.
  707            // Nothing is added to the navigation history.
  708            editor.change_selections(None, window, cx, |s| {
  709                s.select_display_ranges([
  710                    DisplayPoint::new(DisplayRow(1), 0)..DisplayPoint::new(DisplayRow(1), 0)
  711                ])
  712            });
  713            editor.change_selections(None, window, cx, |s| {
  714                s.select_display_ranges([
  715                    DisplayPoint::new(DisplayRow(3), 0)..DisplayPoint::new(DisplayRow(3), 0)
  716                ])
  717            });
  718            assert!(pop_history(&mut editor, cx).is_none());
  719
  720            // Move the cursor a large distance.
  721            // The history can jump back to the previous position.
  722            editor.change_selections(None, window, cx, |s| {
  723                s.select_display_ranges([
  724                    DisplayPoint::new(DisplayRow(13), 0)..DisplayPoint::new(DisplayRow(13), 3)
  725                ])
  726            });
  727            let nav_entry = pop_history(&mut editor, cx).unwrap();
  728            editor.navigate(nav_entry.data.unwrap(), window, cx);
  729            assert_eq!(nav_entry.item.id(), cx.entity_id());
  730            assert_eq!(
  731                editor.selections.display_ranges(cx),
  732                &[DisplayPoint::new(DisplayRow(3), 0)..DisplayPoint::new(DisplayRow(3), 0)]
  733            );
  734            assert!(pop_history(&mut editor, cx).is_none());
  735
  736            // Move the cursor a small distance via the mouse.
  737            // Nothing is added to the navigation history.
  738            editor.begin_selection(DisplayPoint::new(DisplayRow(5), 0), false, 1, window, cx);
  739            editor.end_selection(window, cx);
  740            assert_eq!(
  741                editor.selections.display_ranges(cx),
  742                &[DisplayPoint::new(DisplayRow(5), 0)..DisplayPoint::new(DisplayRow(5), 0)]
  743            );
  744            assert!(pop_history(&mut editor, cx).is_none());
  745
  746            // Move the cursor a large distance via the mouse.
  747            // The history can jump back to the previous position.
  748            editor.begin_selection(DisplayPoint::new(DisplayRow(15), 0), false, 1, window, cx);
  749            editor.end_selection(window, cx);
  750            assert_eq!(
  751                editor.selections.display_ranges(cx),
  752                &[DisplayPoint::new(DisplayRow(15), 0)..DisplayPoint::new(DisplayRow(15), 0)]
  753            );
  754            let nav_entry = pop_history(&mut editor, cx).unwrap();
  755            editor.navigate(nav_entry.data.unwrap(), window, cx);
  756            assert_eq!(nav_entry.item.id(), cx.entity_id());
  757            assert_eq!(
  758                editor.selections.display_ranges(cx),
  759                &[DisplayPoint::new(DisplayRow(5), 0)..DisplayPoint::new(DisplayRow(5), 0)]
  760            );
  761            assert!(pop_history(&mut editor, cx).is_none());
  762
  763            // Set scroll position to check later
  764            editor.set_scroll_position(gpui::Point::<f32>::new(5.5, 5.5), window, cx);
  765            let original_scroll_position = editor.scroll_manager.anchor();
  766
  767            // Jump to the end of the document and adjust scroll
  768            editor.move_to_end(&MoveToEnd, window, cx);
  769            editor.set_scroll_position(gpui::Point::<f32>::new(-2.5, -0.5), window, cx);
  770            assert_ne!(editor.scroll_manager.anchor(), original_scroll_position);
  771
  772            let nav_entry = pop_history(&mut editor, cx).unwrap();
  773            editor.navigate(nav_entry.data.unwrap(), window, cx);
  774            assert_eq!(editor.scroll_manager.anchor(), original_scroll_position);
  775
  776            // Ensure we don't panic when navigation data contains invalid anchors *and* points.
  777            let mut invalid_anchor = editor.scroll_manager.anchor().anchor;
  778            invalid_anchor.text_anchor.buffer_id = BufferId::new(999).ok();
  779            let invalid_point = Point::new(9999, 0);
  780            editor.navigate(
  781                Box::new(NavigationData {
  782                    cursor_anchor: invalid_anchor,
  783                    cursor_position: invalid_point,
  784                    scroll_anchor: ScrollAnchor {
  785                        anchor: invalid_anchor,
  786                        offset: Default::default(),
  787                    },
  788                    scroll_top_row: invalid_point.row,
  789                }),
  790                window,
  791                cx,
  792            );
  793            assert_eq!(
  794                editor.selections.display_ranges(cx),
  795                &[editor.max_point(cx)..editor.max_point(cx)]
  796            );
  797            assert_eq!(
  798                editor.scroll_position(cx),
  799                gpui::Point::new(0., editor.max_point(cx).row().as_f32())
  800            );
  801
  802            editor
  803        })
  804    });
  805}
  806
  807#[gpui::test]
  808fn test_cancel(cx: &mut TestAppContext) {
  809    init_test(cx, |_| {});
  810
  811    let editor = cx.add_window(|window, cx| {
  812        let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
  813        build_editor(buffer, window, cx)
  814    });
  815
  816    _ = editor.update(cx, |editor, window, cx| {
  817        editor.begin_selection(DisplayPoint::new(DisplayRow(3), 4), false, 1, window, cx);
  818        editor.update_selection(
  819            DisplayPoint::new(DisplayRow(1), 1),
  820            0,
  821            gpui::Point::<f32>::default(),
  822            window,
  823            cx,
  824        );
  825        editor.end_selection(window, cx);
  826
  827        editor.begin_selection(DisplayPoint::new(DisplayRow(0), 1), true, 1, window, cx);
  828        editor.update_selection(
  829            DisplayPoint::new(DisplayRow(0), 3),
  830            0,
  831            gpui::Point::<f32>::default(),
  832            window,
  833            cx,
  834        );
  835        editor.end_selection(window, cx);
  836        assert_eq!(
  837            editor.selections.display_ranges(cx),
  838            [
  839                DisplayPoint::new(DisplayRow(0), 1)..DisplayPoint::new(DisplayRow(0), 3),
  840                DisplayPoint::new(DisplayRow(3), 4)..DisplayPoint::new(DisplayRow(1), 1),
  841            ]
  842        );
  843    });
  844
  845    _ = editor.update(cx, |editor, window, cx| {
  846        editor.cancel(&Cancel, window, cx);
  847        assert_eq!(
  848            editor.selections.display_ranges(cx),
  849            [DisplayPoint::new(DisplayRow(3), 4)..DisplayPoint::new(DisplayRow(1), 1)]
  850        );
  851    });
  852
  853    _ = editor.update(cx, |editor, window, cx| {
  854        editor.cancel(&Cancel, window, cx);
  855        assert_eq!(
  856            editor.selections.display_ranges(cx),
  857            [DisplayPoint::new(DisplayRow(1), 1)..DisplayPoint::new(DisplayRow(1), 1)]
  858        );
  859    });
  860}
  861
  862#[gpui::test]
  863fn test_fold_action(cx: &mut TestAppContext) {
  864    init_test(cx, |_| {});
  865
  866    let editor = cx.add_window(|window, cx| {
  867        let buffer = MultiBuffer::build_simple(
  868            &"
  869                impl Foo {
  870                    // Hello!
  871
  872                    fn a() {
  873                        1
  874                    }
  875
  876                    fn b() {
  877                        2
  878                    }
  879
  880                    fn c() {
  881                        3
  882                    }
  883                }
  884            "
  885            .unindent(),
  886            cx,
  887        );
  888        build_editor(buffer.clone(), window, cx)
  889    });
  890
  891    _ = editor.update(cx, |editor, window, cx| {
  892        editor.change_selections(None, window, cx, |s| {
  893            s.select_display_ranges([
  894                DisplayPoint::new(DisplayRow(7), 0)..DisplayPoint::new(DisplayRow(12), 0)
  895            ]);
  896        });
  897        editor.fold(&Fold, window, cx);
  898        assert_eq!(
  899            editor.display_text(cx),
  900            "
  901                impl Foo {
  902                    // Hello!
  903
  904                    fn a() {
  905                        1
  906                    }
  907
  908                    fn b() {⋯
  909                    }
  910
  911                    fn c() {⋯
  912                    }
  913                }
  914            "
  915            .unindent(),
  916        );
  917
  918        editor.fold(&Fold, window, cx);
  919        assert_eq!(
  920            editor.display_text(cx),
  921            "
  922                impl Foo {⋯
  923                }
  924            "
  925            .unindent(),
  926        );
  927
  928        editor.unfold_lines(&UnfoldLines, window, cx);
  929        assert_eq!(
  930            editor.display_text(cx),
  931            "
  932                impl Foo {
  933                    // Hello!
  934
  935                    fn a() {
  936                        1
  937                    }
  938
  939                    fn b() {⋯
  940                    }
  941
  942                    fn c() {⋯
  943                    }
  944                }
  945            "
  946            .unindent(),
  947        );
  948
  949        editor.unfold_lines(&UnfoldLines, window, cx);
  950        assert_eq!(
  951            editor.display_text(cx),
  952            editor.buffer.read(cx).read(cx).text()
  953        );
  954    });
  955}
  956
  957#[gpui::test]
  958fn test_fold_action_whitespace_sensitive_language(cx: &mut TestAppContext) {
  959    init_test(cx, |_| {});
  960
  961    let editor = cx.add_window(|window, cx| {
  962        let buffer = MultiBuffer::build_simple(
  963            &"
  964                class Foo:
  965                    # Hello!
  966
  967                    def a():
  968                        print(1)
  969
  970                    def b():
  971                        print(2)
  972
  973                    def c():
  974                        print(3)
  975            "
  976            .unindent(),
  977            cx,
  978        );
  979        build_editor(buffer.clone(), window, cx)
  980    });
  981
  982    _ = editor.update(cx, |editor, window, cx| {
  983        editor.change_selections(None, window, cx, |s| {
  984            s.select_display_ranges([
  985                DisplayPoint::new(DisplayRow(6), 0)..DisplayPoint::new(DisplayRow(10), 0)
  986            ]);
  987        });
  988        editor.fold(&Fold, window, cx);
  989        assert_eq!(
  990            editor.display_text(cx),
  991            "
  992                class Foo:
  993                    # Hello!
  994
  995                    def a():
  996                        print(1)
  997
  998                    def b():⋯
  999
 1000                    def c():⋯
 1001            "
 1002            .unindent(),
 1003        );
 1004
 1005        editor.fold(&Fold, window, cx);
 1006        assert_eq!(
 1007            editor.display_text(cx),
 1008            "
 1009                class Foo:⋯
 1010            "
 1011            .unindent(),
 1012        );
 1013
 1014        editor.unfold_lines(&UnfoldLines, window, cx);
 1015        assert_eq!(
 1016            editor.display_text(cx),
 1017            "
 1018                class Foo:
 1019                    # Hello!
 1020
 1021                    def a():
 1022                        print(1)
 1023
 1024                    def b():⋯
 1025
 1026                    def c():⋯
 1027            "
 1028            .unindent(),
 1029        );
 1030
 1031        editor.unfold_lines(&UnfoldLines, window, cx);
 1032        assert_eq!(
 1033            editor.display_text(cx),
 1034            editor.buffer.read(cx).read(cx).text()
 1035        );
 1036    });
 1037}
 1038
 1039#[gpui::test]
 1040fn test_fold_action_multiple_line_breaks(cx: &mut TestAppContext) {
 1041    init_test(cx, |_| {});
 1042
 1043    let editor = cx.add_window(|window, cx| {
 1044        let buffer = MultiBuffer::build_simple(
 1045            &"
 1046                class Foo:
 1047                    # Hello!
 1048
 1049                    def a():
 1050                        print(1)
 1051
 1052                    def b():
 1053                        print(2)
 1054
 1055
 1056                    def c():
 1057                        print(3)
 1058
 1059
 1060            "
 1061            .unindent(),
 1062            cx,
 1063        );
 1064        build_editor(buffer.clone(), window, cx)
 1065    });
 1066
 1067    _ = editor.update(cx, |editor, window, cx| {
 1068        editor.change_selections(None, window, cx, |s| {
 1069            s.select_display_ranges([
 1070                DisplayPoint::new(DisplayRow(6), 0)..DisplayPoint::new(DisplayRow(11), 0)
 1071            ]);
 1072        });
 1073        editor.fold(&Fold, window, cx);
 1074        assert_eq!(
 1075            editor.display_text(cx),
 1076            "
 1077                class Foo:
 1078                    # Hello!
 1079
 1080                    def a():
 1081                        print(1)
 1082
 1083                    def b():⋯
 1084
 1085
 1086                    def c():⋯
 1087
 1088
 1089            "
 1090            .unindent(),
 1091        );
 1092
 1093        editor.fold(&Fold, window, cx);
 1094        assert_eq!(
 1095            editor.display_text(cx),
 1096            "
 1097                class Foo:⋯
 1098
 1099
 1100            "
 1101            .unindent(),
 1102        );
 1103
 1104        editor.unfold_lines(&UnfoldLines, window, cx);
 1105        assert_eq!(
 1106            editor.display_text(cx),
 1107            "
 1108                class Foo:
 1109                    # Hello!
 1110
 1111                    def a():
 1112                        print(1)
 1113
 1114                    def b():⋯
 1115
 1116
 1117                    def c():⋯
 1118
 1119
 1120            "
 1121            .unindent(),
 1122        );
 1123
 1124        editor.unfold_lines(&UnfoldLines, window, cx);
 1125        assert_eq!(
 1126            editor.display_text(cx),
 1127            editor.buffer.read(cx).read(cx).text()
 1128        );
 1129    });
 1130}
 1131
 1132#[gpui::test]
 1133fn test_fold_at_level(cx: &mut TestAppContext) {
 1134    init_test(cx, |_| {});
 1135
 1136    let editor = cx.add_window(|window, cx| {
 1137        let buffer = MultiBuffer::build_simple(
 1138            &"
 1139                class Foo:
 1140                    # Hello!
 1141
 1142                    def a():
 1143                        print(1)
 1144
 1145                    def b():
 1146                        print(2)
 1147
 1148
 1149                class Bar:
 1150                    # World!
 1151
 1152                    def a():
 1153                        print(1)
 1154
 1155                    def b():
 1156                        print(2)
 1157
 1158
 1159            "
 1160            .unindent(),
 1161            cx,
 1162        );
 1163        build_editor(buffer.clone(), window, cx)
 1164    });
 1165
 1166    _ = editor.update(cx, |editor, window, cx| {
 1167        editor.fold_at_level(&FoldAtLevel(2), window, cx);
 1168        assert_eq!(
 1169            editor.display_text(cx),
 1170            "
 1171                class Foo:
 1172                    # Hello!
 1173
 1174                    def a():⋯
 1175
 1176                    def b():⋯
 1177
 1178
 1179                class Bar:
 1180                    # World!
 1181
 1182                    def a():⋯
 1183
 1184                    def b():⋯
 1185
 1186
 1187            "
 1188            .unindent(),
 1189        );
 1190
 1191        editor.fold_at_level(&FoldAtLevel(1), window, cx);
 1192        assert_eq!(
 1193            editor.display_text(cx),
 1194            "
 1195                class Foo:⋯
 1196
 1197
 1198                class Bar:⋯
 1199
 1200
 1201            "
 1202            .unindent(),
 1203        );
 1204
 1205        editor.unfold_all(&UnfoldAll, window, cx);
 1206        editor.fold_at_level(&FoldAtLevel(0), window, cx);
 1207        assert_eq!(
 1208            editor.display_text(cx),
 1209            "
 1210                class Foo:
 1211                    # Hello!
 1212
 1213                    def a():
 1214                        print(1)
 1215
 1216                    def b():
 1217                        print(2)
 1218
 1219
 1220                class Bar:
 1221                    # World!
 1222
 1223                    def a():
 1224                        print(1)
 1225
 1226                    def b():
 1227                        print(2)
 1228
 1229
 1230            "
 1231            .unindent(),
 1232        );
 1233
 1234        assert_eq!(
 1235            editor.display_text(cx),
 1236            editor.buffer.read(cx).read(cx).text()
 1237        );
 1238    });
 1239}
 1240
 1241#[gpui::test]
 1242fn test_move_cursor(cx: &mut TestAppContext) {
 1243    init_test(cx, |_| {});
 1244
 1245    let buffer = cx.update(|cx| MultiBuffer::build_simple(&sample_text(6, 6, 'a'), cx));
 1246    let editor = cx.add_window(|window, cx| build_editor(buffer.clone(), window, cx));
 1247
 1248    buffer.update(cx, |buffer, cx| {
 1249        buffer.edit(
 1250            vec![
 1251                (Point::new(1, 0)..Point::new(1, 0), "\t"),
 1252                (Point::new(1, 1)..Point::new(1, 1), "\t"),
 1253            ],
 1254            None,
 1255            cx,
 1256        );
 1257    });
 1258    _ = editor.update(cx, |editor, window, cx| {
 1259        assert_eq!(
 1260            editor.selections.display_ranges(cx),
 1261            &[DisplayPoint::new(DisplayRow(0), 0)..DisplayPoint::new(DisplayRow(0), 0)]
 1262        );
 1263
 1264        editor.move_down(&MoveDown, window, cx);
 1265        assert_eq!(
 1266            editor.selections.display_ranges(cx),
 1267            &[DisplayPoint::new(DisplayRow(1), 0)..DisplayPoint::new(DisplayRow(1), 0)]
 1268        );
 1269
 1270        editor.move_right(&MoveRight, window, cx);
 1271        assert_eq!(
 1272            editor.selections.display_ranges(cx),
 1273            &[DisplayPoint::new(DisplayRow(1), 4)..DisplayPoint::new(DisplayRow(1), 4)]
 1274        );
 1275
 1276        editor.move_left(&MoveLeft, window, cx);
 1277        assert_eq!(
 1278            editor.selections.display_ranges(cx),
 1279            &[DisplayPoint::new(DisplayRow(1), 0)..DisplayPoint::new(DisplayRow(1), 0)]
 1280        );
 1281
 1282        editor.move_up(&MoveUp, window, cx);
 1283        assert_eq!(
 1284            editor.selections.display_ranges(cx),
 1285            &[DisplayPoint::new(DisplayRow(0), 0)..DisplayPoint::new(DisplayRow(0), 0)]
 1286        );
 1287
 1288        editor.move_to_end(&MoveToEnd, window, cx);
 1289        assert_eq!(
 1290            editor.selections.display_ranges(cx),
 1291            &[DisplayPoint::new(DisplayRow(5), 6)..DisplayPoint::new(DisplayRow(5), 6)]
 1292        );
 1293
 1294        editor.move_to_beginning(&MoveToBeginning, window, cx);
 1295        assert_eq!(
 1296            editor.selections.display_ranges(cx),
 1297            &[DisplayPoint::new(DisplayRow(0), 0)..DisplayPoint::new(DisplayRow(0), 0)]
 1298        );
 1299
 1300        editor.change_selections(None, window, cx, |s| {
 1301            s.select_display_ranges([
 1302                DisplayPoint::new(DisplayRow(0), 1)..DisplayPoint::new(DisplayRow(0), 2)
 1303            ]);
 1304        });
 1305        editor.select_to_beginning(&SelectToBeginning, window, cx);
 1306        assert_eq!(
 1307            editor.selections.display_ranges(cx),
 1308            &[DisplayPoint::new(DisplayRow(0), 1)..DisplayPoint::new(DisplayRow(0), 0)]
 1309        );
 1310
 1311        editor.select_to_end(&SelectToEnd, window, cx);
 1312        assert_eq!(
 1313            editor.selections.display_ranges(cx),
 1314            &[DisplayPoint::new(DisplayRow(0), 1)..DisplayPoint::new(DisplayRow(5), 6)]
 1315        );
 1316    });
 1317}
 1318
 1319#[gpui::test]
 1320fn test_move_cursor_multibyte(cx: &mut TestAppContext) {
 1321    init_test(cx, |_| {});
 1322
 1323    let editor = cx.add_window(|window, cx| {
 1324        let buffer = MultiBuffer::build_simple("🟥🟧🟨🟩🟦🟪\nabcde\nαβγδε", cx);
 1325        build_editor(buffer.clone(), window, cx)
 1326    });
 1327
 1328    assert_eq!('🟥'.len_utf8(), 4);
 1329    assert_eq!('α'.len_utf8(), 2);
 1330
 1331    _ = editor.update(cx, |editor, window, cx| {
 1332        editor.fold_creases(
 1333            vec![
 1334                Crease::simple(Point::new(0, 8)..Point::new(0, 16), FoldPlaceholder::test()),
 1335                Crease::simple(Point::new(1, 2)..Point::new(1, 4), FoldPlaceholder::test()),
 1336                Crease::simple(Point::new(2, 4)..Point::new(2, 8), FoldPlaceholder::test()),
 1337            ],
 1338            true,
 1339            window,
 1340            cx,
 1341        );
 1342        assert_eq!(editor.display_text(cx), "🟥🟧⋯🟦🟪\nab⋯e\nαβ⋯ε");
 1343
 1344        editor.move_right(&MoveRight, window, cx);
 1345        assert_eq!(
 1346            editor.selections.display_ranges(cx),
 1347            &[empty_range(0, "🟥".len())]
 1348        );
 1349        editor.move_right(&MoveRight, window, cx);
 1350        assert_eq!(
 1351            editor.selections.display_ranges(cx),
 1352            &[empty_range(0, "🟥🟧".len())]
 1353        );
 1354        editor.move_right(&MoveRight, window, cx);
 1355        assert_eq!(
 1356            editor.selections.display_ranges(cx),
 1357            &[empty_range(0, "🟥🟧⋯".len())]
 1358        );
 1359
 1360        editor.move_down(&MoveDown, window, cx);
 1361        assert_eq!(
 1362            editor.selections.display_ranges(cx),
 1363            &[empty_range(1, "ab⋯e".len())]
 1364        );
 1365        editor.move_left(&MoveLeft, window, cx);
 1366        assert_eq!(
 1367            editor.selections.display_ranges(cx),
 1368            &[empty_range(1, "ab⋯".len())]
 1369        );
 1370        editor.move_left(&MoveLeft, window, cx);
 1371        assert_eq!(
 1372            editor.selections.display_ranges(cx),
 1373            &[empty_range(1, "ab".len())]
 1374        );
 1375        editor.move_left(&MoveLeft, window, cx);
 1376        assert_eq!(
 1377            editor.selections.display_ranges(cx),
 1378            &[empty_range(1, "a".len())]
 1379        );
 1380
 1381        editor.move_down(&MoveDown, window, cx);
 1382        assert_eq!(
 1383            editor.selections.display_ranges(cx),
 1384            &[empty_range(2, "α".len())]
 1385        );
 1386        editor.move_right(&MoveRight, window, cx);
 1387        assert_eq!(
 1388            editor.selections.display_ranges(cx),
 1389            &[empty_range(2, "αβ".len())]
 1390        );
 1391        editor.move_right(&MoveRight, window, cx);
 1392        assert_eq!(
 1393            editor.selections.display_ranges(cx),
 1394            &[empty_range(2, "αβ⋯".len())]
 1395        );
 1396        editor.move_right(&MoveRight, window, cx);
 1397        assert_eq!(
 1398            editor.selections.display_ranges(cx),
 1399            &[empty_range(2, "αβ⋯ε".len())]
 1400        );
 1401
 1402        editor.move_up(&MoveUp, window, cx);
 1403        assert_eq!(
 1404            editor.selections.display_ranges(cx),
 1405            &[empty_range(1, "ab⋯e".len())]
 1406        );
 1407        editor.move_down(&MoveDown, window, cx);
 1408        assert_eq!(
 1409            editor.selections.display_ranges(cx),
 1410            &[empty_range(2, "αβ⋯ε".len())]
 1411        );
 1412        editor.move_up(&MoveUp, window, cx);
 1413        assert_eq!(
 1414            editor.selections.display_ranges(cx),
 1415            &[empty_range(1, "ab⋯e".len())]
 1416        );
 1417
 1418        editor.move_up(&MoveUp, window, cx);
 1419        assert_eq!(
 1420            editor.selections.display_ranges(cx),
 1421            &[empty_range(0, "🟥🟧".len())]
 1422        );
 1423        editor.move_left(&MoveLeft, window, cx);
 1424        assert_eq!(
 1425            editor.selections.display_ranges(cx),
 1426            &[empty_range(0, "🟥".len())]
 1427        );
 1428        editor.move_left(&MoveLeft, window, cx);
 1429        assert_eq!(
 1430            editor.selections.display_ranges(cx),
 1431            &[empty_range(0, "".len())]
 1432        );
 1433    });
 1434}
 1435
 1436#[gpui::test]
 1437fn test_move_cursor_different_line_lengths(cx: &mut TestAppContext) {
 1438    init_test(cx, |_| {});
 1439
 1440    let editor = cx.add_window(|window, cx| {
 1441        let buffer = MultiBuffer::build_simple("ⓐⓑⓒⓓⓔ\nabcd\nαβγ\nabcd\nⓐⓑⓒⓓⓔ\n", cx);
 1442        build_editor(buffer.clone(), window, cx)
 1443    });
 1444    _ = editor.update(cx, |editor, window, cx| {
 1445        editor.change_selections(None, window, cx, |s| {
 1446            s.select_display_ranges([empty_range(0, "ⓐⓑⓒⓓⓔ".len())]);
 1447        });
 1448
 1449        // moving above start of document should move selection to start of document,
 1450        // but the next move down should still be at the original goal_x
 1451        editor.move_up(&MoveUp, window, cx);
 1452        assert_eq!(
 1453            editor.selections.display_ranges(cx),
 1454            &[empty_range(0, "".len())]
 1455        );
 1456
 1457        editor.move_down(&MoveDown, window, cx);
 1458        assert_eq!(
 1459            editor.selections.display_ranges(cx),
 1460            &[empty_range(1, "abcd".len())]
 1461        );
 1462
 1463        editor.move_down(&MoveDown, window, cx);
 1464        assert_eq!(
 1465            editor.selections.display_ranges(cx),
 1466            &[empty_range(2, "αβγ".len())]
 1467        );
 1468
 1469        editor.move_down(&MoveDown, window, cx);
 1470        assert_eq!(
 1471            editor.selections.display_ranges(cx),
 1472            &[empty_range(3, "abcd".len())]
 1473        );
 1474
 1475        editor.move_down(&MoveDown, window, cx);
 1476        assert_eq!(
 1477            editor.selections.display_ranges(cx),
 1478            &[empty_range(4, "ⓐⓑⓒⓓⓔ".len())]
 1479        );
 1480
 1481        // moving past end of document should not change goal_x
 1482        editor.move_down(&MoveDown, window, cx);
 1483        assert_eq!(
 1484            editor.selections.display_ranges(cx),
 1485            &[empty_range(5, "".len())]
 1486        );
 1487
 1488        editor.move_down(&MoveDown, window, cx);
 1489        assert_eq!(
 1490            editor.selections.display_ranges(cx),
 1491            &[empty_range(5, "".len())]
 1492        );
 1493
 1494        editor.move_up(&MoveUp, window, cx);
 1495        assert_eq!(
 1496            editor.selections.display_ranges(cx),
 1497            &[empty_range(4, "ⓐⓑⓒⓓⓔ".len())]
 1498        );
 1499
 1500        editor.move_up(&MoveUp, window, cx);
 1501        assert_eq!(
 1502            editor.selections.display_ranges(cx),
 1503            &[empty_range(3, "abcd".len())]
 1504        );
 1505
 1506        editor.move_up(&MoveUp, window, cx);
 1507        assert_eq!(
 1508            editor.selections.display_ranges(cx),
 1509            &[empty_range(2, "αβγ".len())]
 1510        );
 1511    });
 1512}
 1513
 1514#[gpui::test]
 1515fn test_beginning_end_of_line(cx: &mut TestAppContext) {
 1516    init_test(cx, |_| {});
 1517    let move_to_beg = MoveToBeginningOfLine {
 1518        stop_at_soft_wraps: true,
 1519        stop_at_indent: true,
 1520    };
 1521
 1522    let delete_to_beg = DeleteToBeginningOfLine {
 1523        stop_at_indent: false,
 1524    };
 1525
 1526    let move_to_end = MoveToEndOfLine {
 1527        stop_at_soft_wraps: true,
 1528    };
 1529
 1530    let editor = cx.add_window(|window, cx| {
 1531        let buffer = MultiBuffer::build_simple("abc\n  def", cx);
 1532        build_editor(buffer, window, cx)
 1533    });
 1534    _ = editor.update(cx, |editor, window, cx| {
 1535        editor.change_selections(None, window, cx, |s| {
 1536            s.select_display_ranges([
 1537                DisplayPoint::new(DisplayRow(0), 1)..DisplayPoint::new(DisplayRow(0), 1),
 1538                DisplayPoint::new(DisplayRow(1), 4)..DisplayPoint::new(DisplayRow(1), 4),
 1539            ]);
 1540        });
 1541    });
 1542
 1543    _ = editor.update(cx, |editor, window, cx| {
 1544        editor.move_to_beginning_of_line(&move_to_beg, window, cx);
 1545        assert_eq!(
 1546            editor.selections.display_ranges(cx),
 1547            &[
 1548                DisplayPoint::new(DisplayRow(0), 0)..DisplayPoint::new(DisplayRow(0), 0),
 1549                DisplayPoint::new(DisplayRow(1), 2)..DisplayPoint::new(DisplayRow(1), 2),
 1550            ]
 1551        );
 1552    });
 1553
 1554    _ = editor.update(cx, |editor, window, cx| {
 1555        editor.move_to_beginning_of_line(&move_to_beg, window, cx);
 1556        assert_eq!(
 1557            editor.selections.display_ranges(cx),
 1558            &[
 1559                DisplayPoint::new(DisplayRow(0), 0)..DisplayPoint::new(DisplayRow(0), 0),
 1560                DisplayPoint::new(DisplayRow(1), 0)..DisplayPoint::new(DisplayRow(1), 0),
 1561            ]
 1562        );
 1563    });
 1564
 1565    _ = editor.update(cx, |editor, window, cx| {
 1566        editor.move_to_beginning_of_line(&move_to_beg, window, cx);
 1567        assert_eq!(
 1568            editor.selections.display_ranges(cx),
 1569            &[
 1570                DisplayPoint::new(DisplayRow(0), 0)..DisplayPoint::new(DisplayRow(0), 0),
 1571                DisplayPoint::new(DisplayRow(1), 2)..DisplayPoint::new(DisplayRow(1), 2),
 1572            ]
 1573        );
 1574    });
 1575
 1576    _ = editor.update(cx, |editor, window, cx| {
 1577        editor.move_to_end_of_line(&move_to_end, window, cx);
 1578        assert_eq!(
 1579            editor.selections.display_ranges(cx),
 1580            &[
 1581                DisplayPoint::new(DisplayRow(0), 3)..DisplayPoint::new(DisplayRow(0), 3),
 1582                DisplayPoint::new(DisplayRow(1), 5)..DisplayPoint::new(DisplayRow(1), 5),
 1583            ]
 1584        );
 1585    });
 1586
 1587    // Moving to the end of line again is a no-op.
 1588    _ = editor.update(cx, |editor, window, cx| {
 1589        editor.move_to_end_of_line(&move_to_end, window, cx);
 1590        assert_eq!(
 1591            editor.selections.display_ranges(cx),
 1592            &[
 1593                DisplayPoint::new(DisplayRow(0), 3)..DisplayPoint::new(DisplayRow(0), 3),
 1594                DisplayPoint::new(DisplayRow(1), 5)..DisplayPoint::new(DisplayRow(1), 5),
 1595            ]
 1596        );
 1597    });
 1598
 1599    _ = editor.update(cx, |editor, window, cx| {
 1600        editor.move_left(&MoveLeft, window, cx);
 1601        editor.select_to_beginning_of_line(
 1602            &SelectToBeginningOfLine {
 1603                stop_at_soft_wraps: true,
 1604                stop_at_indent: true,
 1605            },
 1606            window,
 1607            cx,
 1608        );
 1609        assert_eq!(
 1610            editor.selections.display_ranges(cx),
 1611            &[
 1612                DisplayPoint::new(DisplayRow(0), 2)..DisplayPoint::new(DisplayRow(0), 0),
 1613                DisplayPoint::new(DisplayRow(1), 4)..DisplayPoint::new(DisplayRow(1), 2),
 1614            ]
 1615        );
 1616    });
 1617
 1618    _ = editor.update(cx, |editor, window, cx| {
 1619        editor.select_to_beginning_of_line(
 1620            &SelectToBeginningOfLine {
 1621                stop_at_soft_wraps: true,
 1622                stop_at_indent: true,
 1623            },
 1624            window,
 1625            cx,
 1626        );
 1627        assert_eq!(
 1628            editor.selections.display_ranges(cx),
 1629            &[
 1630                DisplayPoint::new(DisplayRow(0), 2)..DisplayPoint::new(DisplayRow(0), 0),
 1631                DisplayPoint::new(DisplayRow(1), 4)..DisplayPoint::new(DisplayRow(1), 0),
 1632            ]
 1633        );
 1634    });
 1635
 1636    _ = editor.update(cx, |editor, window, cx| {
 1637        editor.select_to_beginning_of_line(
 1638            &SelectToBeginningOfLine {
 1639                stop_at_soft_wraps: true,
 1640                stop_at_indent: true,
 1641            },
 1642            window,
 1643            cx,
 1644        );
 1645        assert_eq!(
 1646            editor.selections.display_ranges(cx),
 1647            &[
 1648                DisplayPoint::new(DisplayRow(0), 2)..DisplayPoint::new(DisplayRow(0), 0),
 1649                DisplayPoint::new(DisplayRow(1), 4)..DisplayPoint::new(DisplayRow(1), 2),
 1650            ]
 1651        );
 1652    });
 1653
 1654    _ = editor.update(cx, |editor, window, cx| {
 1655        editor.select_to_end_of_line(
 1656            &SelectToEndOfLine {
 1657                stop_at_soft_wraps: true,
 1658            },
 1659            window,
 1660            cx,
 1661        );
 1662        assert_eq!(
 1663            editor.selections.display_ranges(cx),
 1664            &[
 1665                DisplayPoint::new(DisplayRow(0), 2)..DisplayPoint::new(DisplayRow(0), 3),
 1666                DisplayPoint::new(DisplayRow(1), 4)..DisplayPoint::new(DisplayRow(1), 5),
 1667            ]
 1668        );
 1669    });
 1670
 1671    _ = editor.update(cx, |editor, window, cx| {
 1672        editor.delete_to_end_of_line(&DeleteToEndOfLine, window, cx);
 1673        assert_eq!(editor.display_text(cx), "ab\n  de");
 1674        assert_eq!(
 1675            editor.selections.display_ranges(cx),
 1676            &[
 1677                DisplayPoint::new(DisplayRow(0), 2)..DisplayPoint::new(DisplayRow(0), 2),
 1678                DisplayPoint::new(DisplayRow(1), 4)..DisplayPoint::new(DisplayRow(1), 4),
 1679            ]
 1680        );
 1681    });
 1682
 1683    _ = editor.update(cx, |editor, window, cx| {
 1684        editor.delete_to_beginning_of_line(&delete_to_beg, window, cx);
 1685        assert_eq!(editor.display_text(cx), "\n");
 1686        assert_eq!(
 1687            editor.selections.display_ranges(cx),
 1688            &[
 1689                DisplayPoint::new(DisplayRow(0), 0)..DisplayPoint::new(DisplayRow(0), 0),
 1690                DisplayPoint::new(DisplayRow(1), 0)..DisplayPoint::new(DisplayRow(1), 0),
 1691            ]
 1692        );
 1693    });
 1694}
 1695
 1696#[gpui::test]
 1697fn test_beginning_end_of_line_ignore_soft_wrap(cx: &mut TestAppContext) {
 1698    init_test(cx, |_| {});
 1699    let move_to_beg = MoveToBeginningOfLine {
 1700        stop_at_soft_wraps: false,
 1701        stop_at_indent: false,
 1702    };
 1703
 1704    let move_to_end = MoveToEndOfLine {
 1705        stop_at_soft_wraps: false,
 1706    };
 1707
 1708    let editor = cx.add_window(|window, cx| {
 1709        let buffer = MultiBuffer::build_simple("thequickbrownfox\njumpedoverthelazydogs", cx);
 1710        build_editor(buffer, window, cx)
 1711    });
 1712
 1713    _ = editor.update(cx, |editor, window, cx| {
 1714        editor.set_wrap_width(Some(140.0.into()), cx);
 1715
 1716        // We expect the following lines after wrapping
 1717        // ```
 1718        // thequickbrownfox
 1719        // jumpedoverthelazydo
 1720        // gs
 1721        // ```
 1722        // The final `gs` was soft-wrapped onto a new line.
 1723        assert_eq!(
 1724            "thequickbrownfox\njumpedoverthelaz\nydogs",
 1725            editor.display_text(cx),
 1726        );
 1727
 1728        // First, let's assert behavior on the first line, that was not soft-wrapped.
 1729        // Start the cursor at the `k` on the first line
 1730        editor.change_selections(None, window, cx, |s| {
 1731            s.select_display_ranges([
 1732                DisplayPoint::new(DisplayRow(0), 7)..DisplayPoint::new(DisplayRow(0), 7)
 1733            ]);
 1734        });
 1735
 1736        // Moving to the beginning of the line should put us at the beginning of the line.
 1737        editor.move_to_beginning_of_line(&move_to_beg, window, cx);
 1738        assert_eq!(
 1739            vec![DisplayPoint::new(DisplayRow(0), 0)..DisplayPoint::new(DisplayRow(0), 0),],
 1740            editor.selections.display_ranges(cx)
 1741        );
 1742
 1743        // Moving to the end of the line should put us at the end of the line.
 1744        editor.move_to_end_of_line(&move_to_end, window, cx);
 1745        assert_eq!(
 1746            vec![DisplayPoint::new(DisplayRow(0), 16)..DisplayPoint::new(DisplayRow(0), 16),],
 1747            editor.selections.display_ranges(cx)
 1748        );
 1749
 1750        // Now, let's assert behavior on the second line, that ended up being soft-wrapped.
 1751        // Start the cursor at the last line (`y` that was wrapped to a new line)
 1752        editor.change_selections(None, window, cx, |s| {
 1753            s.select_display_ranges([
 1754                DisplayPoint::new(DisplayRow(2), 0)..DisplayPoint::new(DisplayRow(2), 0)
 1755            ]);
 1756        });
 1757
 1758        // Moving to the beginning of the line should put us at the start of the second line of
 1759        // display text, i.e., the `j`.
 1760        editor.move_to_beginning_of_line(&move_to_beg, window, cx);
 1761        assert_eq!(
 1762            vec![DisplayPoint::new(DisplayRow(1), 0)..DisplayPoint::new(DisplayRow(1), 0),],
 1763            editor.selections.display_ranges(cx)
 1764        );
 1765
 1766        // Moving to the beginning of the line again should be a no-op.
 1767        editor.move_to_beginning_of_line(&move_to_beg, window, cx);
 1768        assert_eq!(
 1769            vec![DisplayPoint::new(DisplayRow(1), 0)..DisplayPoint::new(DisplayRow(1), 0),],
 1770            editor.selections.display_ranges(cx)
 1771        );
 1772
 1773        // Moving to the end of the line should put us right after the `s` that was soft-wrapped to the
 1774        // next display line.
 1775        editor.move_to_end_of_line(&move_to_end, window, cx);
 1776        assert_eq!(
 1777            vec![DisplayPoint::new(DisplayRow(2), 5)..DisplayPoint::new(DisplayRow(2), 5),],
 1778            editor.selections.display_ranges(cx)
 1779        );
 1780
 1781        // Moving to the end of the line again should be a no-op.
 1782        editor.move_to_end_of_line(&move_to_end, window, cx);
 1783        assert_eq!(
 1784            vec![DisplayPoint::new(DisplayRow(2), 5)..DisplayPoint::new(DisplayRow(2), 5),],
 1785            editor.selections.display_ranges(cx)
 1786        );
 1787    });
 1788}
 1789
 1790#[gpui::test]
 1791fn test_beginning_of_line_stop_at_indent(cx: &mut TestAppContext) {
 1792    init_test(cx, |_| {});
 1793
 1794    let move_to_beg = MoveToBeginningOfLine {
 1795        stop_at_soft_wraps: true,
 1796        stop_at_indent: true,
 1797    };
 1798
 1799    let select_to_beg = SelectToBeginningOfLine {
 1800        stop_at_soft_wraps: true,
 1801        stop_at_indent: true,
 1802    };
 1803
 1804    let delete_to_beg = DeleteToBeginningOfLine {
 1805        stop_at_indent: true,
 1806    };
 1807
 1808    let move_to_end = MoveToEndOfLine {
 1809        stop_at_soft_wraps: false,
 1810    };
 1811
 1812    let editor = cx.add_window(|window, cx| {
 1813        let buffer = MultiBuffer::build_simple("abc\n  def", cx);
 1814        build_editor(buffer, window, cx)
 1815    });
 1816
 1817    _ = editor.update(cx, |editor, window, cx| {
 1818        editor.change_selections(None, window, cx, |s| {
 1819            s.select_display_ranges([
 1820                DisplayPoint::new(DisplayRow(0), 1)..DisplayPoint::new(DisplayRow(0), 1),
 1821                DisplayPoint::new(DisplayRow(1), 4)..DisplayPoint::new(DisplayRow(1), 4),
 1822            ]);
 1823        });
 1824
 1825        // Moving to the beginning of the line should put the first cursor at the beginning of the line,
 1826        // and the second cursor at the first non-whitespace character in the line.
 1827        editor.move_to_beginning_of_line(&move_to_beg, window, cx);
 1828        assert_eq!(
 1829            editor.selections.display_ranges(cx),
 1830            &[
 1831                DisplayPoint::new(DisplayRow(0), 0)..DisplayPoint::new(DisplayRow(0), 0),
 1832                DisplayPoint::new(DisplayRow(1), 2)..DisplayPoint::new(DisplayRow(1), 2),
 1833            ]
 1834        );
 1835
 1836        // Moving to the beginning of the line again should be a no-op for the first cursor,
 1837        // and should move the second cursor to the beginning of the line.
 1838        editor.move_to_beginning_of_line(&move_to_beg, window, cx);
 1839        assert_eq!(
 1840            editor.selections.display_ranges(cx),
 1841            &[
 1842                DisplayPoint::new(DisplayRow(0), 0)..DisplayPoint::new(DisplayRow(0), 0),
 1843                DisplayPoint::new(DisplayRow(1), 0)..DisplayPoint::new(DisplayRow(1), 0),
 1844            ]
 1845        );
 1846
 1847        // Moving to the beginning of the line again should still be a no-op for the first cursor,
 1848        // and should move the second cursor back to the first non-whitespace character in the line.
 1849        editor.move_to_beginning_of_line(&move_to_beg, window, cx);
 1850        assert_eq!(
 1851            editor.selections.display_ranges(cx),
 1852            &[
 1853                DisplayPoint::new(DisplayRow(0), 0)..DisplayPoint::new(DisplayRow(0), 0),
 1854                DisplayPoint::new(DisplayRow(1), 2)..DisplayPoint::new(DisplayRow(1), 2),
 1855            ]
 1856        );
 1857
 1858        // Selecting to the beginning of the line should select to the beginning of the line for the first cursor,
 1859        // and to the first non-whitespace character in the line for the second cursor.
 1860        editor.move_to_end_of_line(&move_to_end, window, cx);
 1861        editor.move_left(&MoveLeft, window, cx);
 1862        editor.select_to_beginning_of_line(&select_to_beg, window, cx);
 1863        assert_eq!(
 1864            editor.selections.display_ranges(cx),
 1865            &[
 1866                DisplayPoint::new(DisplayRow(0), 2)..DisplayPoint::new(DisplayRow(0), 0),
 1867                DisplayPoint::new(DisplayRow(1), 4)..DisplayPoint::new(DisplayRow(1), 2),
 1868            ]
 1869        );
 1870
 1871        // Selecting to the beginning of the line again should be a no-op for the first cursor,
 1872        // and should select to the beginning of the line for the second cursor.
 1873        editor.select_to_beginning_of_line(&select_to_beg, window, cx);
 1874        assert_eq!(
 1875            editor.selections.display_ranges(cx),
 1876            &[
 1877                DisplayPoint::new(DisplayRow(0), 2)..DisplayPoint::new(DisplayRow(0), 0),
 1878                DisplayPoint::new(DisplayRow(1), 4)..DisplayPoint::new(DisplayRow(1), 0),
 1879            ]
 1880        );
 1881
 1882        // Deleting to the beginning of the line should delete to the beginning of the line for the first cursor,
 1883        // and should delete to the first non-whitespace character in the line for the second cursor.
 1884        editor.move_to_end_of_line(&move_to_end, window, cx);
 1885        editor.move_left(&MoveLeft, window, cx);
 1886        editor.delete_to_beginning_of_line(&delete_to_beg, window, cx);
 1887        assert_eq!(editor.text(cx), "c\n  f");
 1888    });
 1889}
 1890
 1891#[gpui::test]
 1892fn test_prev_next_word_boundary(cx: &mut TestAppContext) {
 1893    init_test(cx, |_| {});
 1894
 1895    let editor = cx.add_window(|window, cx| {
 1896        let buffer = MultiBuffer::build_simple("use std::str::{foo, bar}\n\n  {baz.qux()}", cx);
 1897        build_editor(buffer, window, cx)
 1898    });
 1899    _ = editor.update(cx, |editor, window, cx| {
 1900        editor.change_selections(None, window, cx, |s| {
 1901            s.select_display_ranges([
 1902                DisplayPoint::new(DisplayRow(0), 11)..DisplayPoint::new(DisplayRow(0), 11),
 1903                DisplayPoint::new(DisplayRow(2), 4)..DisplayPoint::new(DisplayRow(2), 4),
 1904            ])
 1905        });
 1906
 1907        editor.move_to_previous_word_start(&MoveToPreviousWordStart, window, cx);
 1908        assert_selection_ranges("use std::ˇstr::{foo, bar}\n\n  {ˇbaz.qux()}", editor, cx);
 1909
 1910        editor.move_to_previous_word_start(&MoveToPreviousWordStart, window, cx);
 1911        assert_selection_ranges("use stdˇ::str::{foo, bar}\n\n  ˇ{baz.qux()}", editor, cx);
 1912
 1913        editor.move_to_previous_word_start(&MoveToPreviousWordStart, window, cx);
 1914        assert_selection_ranges("use ˇstd::str::{foo, bar}\n\nˇ  {baz.qux()}", editor, cx);
 1915
 1916        editor.move_to_previous_word_start(&MoveToPreviousWordStart, window, cx);
 1917        assert_selection_ranges("ˇuse std::str::{foo, bar}\nˇ\n  {baz.qux()}", editor, cx);
 1918
 1919        editor.move_to_previous_word_start(&MoveToPreviousWordStart, window, cx);
 1920        assert_selection_ranges("ˇuse std::str::{foo, barˇ}\n\n  {baz.qux()}", editor, cx);
 1921
 1922        editor.move_to_next_word_end(&MoveToNextWordEnd, window, cx);
 1923        assert_selection_ranges("useˇ std::str::{foo, bar}ˇ\n\n  {baz.qux()}", editor, cx);
 1924
 1925        editor.move_to_next_word_end(&MoveToNextWordEnd, window, cx);
 1926        assert_selection_ranges("use stdˇ::str::{foo, bar}\nˇ\n  {baz.qux()}", editor, cx);
 1927
 1928        editor.move_to_next_word_end(&MoveToNextWordEnd, window, cx);
 1929        assert_selection_ranges("use std::ˇstr::{foo, bar}\n\n  {ˇbaz.qux()}", editor, cx);
 1930
 1931        editor.move_right(&MoveRight, window, cx);
 1932        editor.select_to_previous_word_start(&SelectToPreviousWordStart, window, cx);
 1933        assert_selection_ranges(
 1934            "use std::«ˇs»tr::{foo, bar}\n\n  {«ˇb»az.qux()}",
 1935            editor,
 1936            cx,
 1937        );
 1938
 1939        editor.select_to_previous_word_start(&SelectToPreviousWordStart, window, cx);
 1940        assert_selection_ranges(
 1941            "use std«ˇ::s»tr::{foo, bar}\n\n  «ˇ{b»az.qux()}",
 1942            editor,
 1943            cx,
 1944        );
 1945
 1946        editor.select_to_next_word_end(&SelectToNextWordEnd, window, cx);
 1947        assert_selection_ranges(
 1948            "use std::«ˇs»tr::{foo, bar}\n\n  {«ˇb»az.qux()}",
 1949            editor,
 1950            cx,
 1951        );
 1952    });
 1953}
 1954
 1955#[gpui::test]
 1956fn test_prev_next_word_bounds_with_soft_wrap(cx: &mut TestAppContext) {
 1957    init_test(cx, |_| {});
 1958
 1959    let editor = cx.add_window(|window, cx| {
 1960        let buffer = MultiBuffer::build_simple("use one::{\n    two::three::four::five\n};", cx);
 1961        build_editor(buffer, window, cx)
 1962    });
 1963
 1964    _ = editor.update(cx, |editor, window, cx| {
 1965        editor.set_wrap_width(Some(140.0.into()), cx);
 1966        assert_eq!(
 1967            editor.display_text(cx),
 1968            "use one::{\n    two::three::\n    four::five\n};"
 1969        );
 1970
 1971        editor.change_selections(None, window, cx, |s| {
 1972            s.select_display_ranges([
 1973                DisplayPoint::new(DisplayRow(1), 7)..DisplayPoint::new(DisplayRow(1), 7)
 1974            ]);
 1975        });
 1976
 1977        editor.move_to_next_word_end(&MoveToNextWordEnd, window, cx);
 1978        assert_eq!(
 1979            editor.selections.display_ranges(cx),
 1980            &[DisplayPoint::new(DisplayRow(1), 9)..DisplayPoint::new(DisplayRow(1), 9)]
 1981        );
 1982
 1983        editor.move_to_next_word_end(&MoveToNextWordEnd, window, cx);
 1984        assert_eq!(
 1985            editor.selections.display_ranges(cx),
 1986            &[DisplayPoint::new(DisplayRow(1), 14)..DisplayPoint::new(DisplayRow(1), 14)]
 1987        );
 1988
 1989        editor.move_to_next_word_end(&MoveToNextWordEnd, window, cx);
 1990        assert_eq!(
 1991            editor.selections.display_ranges(cx),
 1992            &[DisplayPoint::new(DisplayRow(2), 4)..DisplayPoint::new(DisplayRow(2), 4)]
 1993        );
 1994
 1995        editor.move_to_next_word_end(&MoveToNextWordEnd, window, cx);
 1996        assert_eq!(
 1997            editor.selections.display_ranges(cx),
 1998            &[DisplayPoint::new(DisplayRow(2), 8)..DisplayPoint::new(DisplayRow(2), 8)]
 1999        );
 2000
 2001        editor.move_to_previous_word_start(&MoveToPreviousWordStart, window, cx);
 2002        assert_eq!(
 2003            editor.selections.display_ranges(cx),
 2004            &[DisplayPoint::new(DisplayRow(2), 4)..DisplayPoint::new(DisplayRow(2), 4)]
 2005        );
 2006
 2007        editor.move_to_previous_word_start(&MoveToPreviousWordStart, window, cx);
 2008        assert_eq!(
 2009            editor.selections.display_ranges(cx),
 2010            &[DisplayPoint::new(DisplayRow(1), 14)..DisplayPoint::new(DisplayRow(1), 14)]
 2011        );
 2012    });
 2013}
 2014
 2015#[gpui::test]
 2016async fn test_move_start_of_paragraph_end_of_paragraph(cx: &mut TestAppContext) {
 2017    init_test(cx, |_| {});
 2018    let mut cx = EditorTestContext::new(cx).await;
 2019
 2020    let line_height = cx.editor(|editor, window, _| {
 2021        editor
 2022            .style()
 2023            .unwrap()
 2024            .text
 2025            .line_height_in_pixels(window.rem_size())
 2026    });
 2027    cx.simulate_window_resize(cx.window, size(px(100.), 4. * line_height));
 2028
 2029    cx.set_state(
 2030        &r#"ˇone
 2031        two
 2032
 2033        three
 2034        fourˇ
 2035        five
 2036
 2037        six"#
 2038            .unindent(),
 2039    );
 2040
 2041    cx.update_editor(|editor, window, cx| {
 2042        editor.move_to_end_of_paragraph(&MoveToEndOfParagraph, window, cx)
 2043    });
 2044    cx.assert_editor_state(
 2045        &r#"one
 2046        two
 2047        ˇ
 2048        three
 2049        four
 2050        five
 2051        ˇ
 2052        six"#
 2053            .unindent(),
 2054    );
 2055
 2056    cx.update_editor(|editor, window, cx| {
 2057        editor.move_to_end_of_paragraph(&MoveToEndOfParagraph, window, cx)
 2058    });
 2059    cx.assert_editor_state(
 2060        &r#"one
 2061        two
 2062
 2063        three
 2064        four
 2065        five
 2066        ˇ
 2067        sixˇ"#
 2068            .unindent(),
 2069    );
 2070
 2071    cx.update_editor(|editor, window, cx| {
 2072        editor.move_to_end_of_paragraph(&MoveToEndOfParagraph, window, cx)
 2073    });
 2074    cx.assert_editor_state(
 2075        &r#"one
 2076        two
 2077
 2078        three
 2079        four
 2080        five
 2081
 2082        sixˇ"#
 2083            .unindent(),
 2084    );
 2085
 2086    cx.update_editor(|editor, window, cx| {
 2087        editor.move_to_start_of_paragraph(&MoveToStartOfParagraph, window, cx)
 2088    });
 2089    cx.assert_editor_state(
 2090        &r#"one
 2091        two
 2092
 2093        three
 2094        four
 2095        five
 2096        ˇ
 2097        six"#
 2098            .unindent(),
 2099    );
 2100
 2101    cx.update_editor(|editor, window, cx| {
 2102        editor.move_to_start_of_paragraph(&MoveToStartOfParagraph, window, cx)
 2103    });
 2104    cx.assert_editor_state(
 2105        &r#"one
 2106        two
 2107        ˇ
 2108        three
 2109        four
 2110        five
 2111
 2112        six"#
 2113            .unindent(),
 2114    );
 2115
 2116    cx.update_editor(|editor, window, cx| {
 2117        editor.move_to_start_of_paragraph(&MoveToStartOfParagraph, window, cx)
 2118    });
 2119    cx.assert_editor_state(
 2120        &r#"ˇone
 2121        two
 2122
 2123        three
 2124        four
 2125        five
 2126
 2127        six"#
 2128            .unindent(),
 2129    );
 2130}
 2131
 2132#[gpui::test]
 2133async fn test_scroll_page_up_page_down(cx: &mut TestAppContext) {
 2134    init_test(cx, |_| {});
 2135    let mut cx = EditorTestContext::new(cx).await;
 2136    let line_height = cx.editor(|editor, window, _| {
 2137        editor
 2138            .style()
 2139            .unwrap()
 2140            .text
 2141            .line_height_in_pixels(window.rem_size())
 2142    });
 2143    let window = cx.window;
 2144    cx.simulate_window_resize(window, size(px(1000.), 4. * line_height + px(0.5)));
 2145
 2146    cx.set_state(
 2147        r#"ˇone
 2148        two
 2149        three
 2150        four
 2151        five
 2152        six
 2153        seven
 2154        eight
 2155        nine
 2156        ten
 2157        "#,
 2158    );
 2159
 2160    cx.update_editor(|editor, window, cx| {
 2161        assert_eq!(
 2162            editor.snapshot(window, cx).scroll_position(),
 2163            gpui::Point::new(0., 0.)
 2164        );
 2165        editor.scroll_screen(&ScrollAmount::Page(1.), window, cx);
 2166        assert_eq!(
 2167            editor.snapshot(window, cx).scroll_position(),
 2168            gpui::Point::new(0., 3.)
 2169        );
 2170        editor.scroll_screen(&ScrollAmount::Page(1.), window, cx);
 2171        assert_eq!(
 2172            editor.snapshot(window, cx).scroll_position(),
 2173            gpui::Point::new(0., 6.)
 2174        );
 2175        editor.scroll_screen(&ScrollAmount::Page(-1.), window, cx);
 2176        assert_eq!(
 2177            editor.snapshot(window, cx).scroll_position(),
 2178            gpui::Point::new(0., 3.)
 2179        );
 2180
 2181        editor.scroll_screen(&ScrollAmount::Page(-0.5), window, cx);
 2182        assert_eq!(
 2183            editor.snapshot(window, cx).scroll_position(),
 2184            gpui::Point::new(0., 1.)
 2185        );
 2186        editor.scroll_screen(&ScrollAmount::Page(0.5), window, cx);
 2187        assert_eq!(
 2188            editor.snapshot(window, cx).scroll_position(),
 2189            gpui::Point::new(0., 3.)
 2190        );
 2191    });
 2192}
 2193
 2194#[gpui::test]
 2195async fn test_autoscroll(cx: &mut TestAppContext) {
 2196    init_test(cx, |_| {});
 2197    let mut cx = EditorTestContext::new(cx).await;
 2198
 2199    let line_height = cx.update_editor(|editor, window, cx| {
 2200        editor.set_vertical_scroll_margin(2, cx);
 2201        editor
 2202            .style()
 2203            .unwrap()
 2204            .text
 2205            .line_height_in_pixels(window.rem_size())
 2206    });
 2207    let window = cx.window;
 2208    cx.simulate_window_resize(window, size(px(1000.), 6. * line_height));
 2209
 2210    cx.set_state(
 2211        r#"ˇone
 2212            two
 2213            three
 2214            four
 2215            five
 2216            six
 2217            seven
 2218            eight
 2219            nine
 2220            ten
 2221        "#,
 2222    );
 2223    cx.update_editor(|editor, window, cx| {
 2224        assert_eq!(
 2225            editor.snapshot(window, cx).scroll_position(),
 2226            gpui::Point::new(0., 0.0)
 2227        );
 2228    });
 2229
 2230    // Add a cursor below the visible area. Since both cursors cannot fit
 2231    // on screen, the editor autoscrolls to reveal the newest cursor, and
 2232    // allows the vertical scroll margin below that cursor.
 2233    cx.update_editor(|editor, window, cx| {
 2234        editor.change_selections(Some(Autoscroll::fit()), window, cx, |selections| {
 2235            selections.select_ranges([
 2236                Point::new(0, 0)..Point::new(0, 0),
 2237                Point::new(6, 0)..Point::new(6, 0),
 2238            ]);
 2239        })
 2240    });
 2241    cx.update_editor(|editor, window, cx| {
 2242        assert_eq!(
 2243            editor.snapshot(window, cx).scroll_position(),
 2244            gpui::Point::new(0., 3.0)
 2245        );
 2246    });
 2247
 2248    // Move down. The editor cursor scrolls down to track the newest cursor.
 2249    cx.update_editor(|editor, window, cx| {
 2250        editor.move_down(&Default::default(), window, cx);
 2251    });
 2252    cx.update_editor(|editor, window, cx| {
 2253        assert_eq!(
 2254            editor.snapshot(window, cx).scroll_position(),
 2255            gpui::Point::new(0., 4.0)
 2256        );
 2257    });
 2258
 2259    // Add a cursor above the visible area. Since both cursors fit on screen,
 2260    // the editor scrolls to show both.
 2261    cx.update_editor(|editor, window, cx| {
 2262        editor.change_selections(Some(Autoscroll::fit()), window, cx, |selections| {
 2263            selections.select_ranges([
 2264                Point::new(1, 0)..Point::new(1, 0),
 2265                Point::new(6, 0)..Point::new(6, 0),
 2266            ]);
 2267        })
 2268    });
 2269    cx.update_editor(|editor, window, cx| {
 2270        assert_eq!(
 2271            editor.snapshot(window, cx).scroll_position(),
 2272            gpui::Point::new(0., 1.0)
 2273        );
 2274    });
 2275}
 2276
 2277#[gpui::test]
 2278async fn test_move_page_up_page_down(cx: &mut TestAppContext) {
 2279    init_test(cx, |_| {});
 2280    let mut cx = EditorTestContext::new(cx).await;
 2281
 2282    let line_height = cx.editor(|editor, window, _cx| {
 2283        editor
 2284            .style()
 2285            .unwrap()
 2286            .text
 2287            .line_height_in_pixels(window.rem_size())
 2288    });
 2289    let window = cx.window;
 2290    cx.simulate_window_resize(window, size(px(100.), 4. * line_height));
 2291    cx.set_state(
 2292        &r#"
 2293        ˇone
 2294        two
 2295        threeˇ
 2296        four
 2297        five
 2298        six
 2299        seven
 2300        eight
 2301        nine
 2302        ten
 2303        "#
 2304        .unindent(),
 2305    );
 2306
 2307    cx.update_editor(|editor, window, cx| {
 2308        editor.move_page_down(&MovePageDown::default(), window, cx)
 2309    });
 2310    cx.assert_editor_state(
 2311        &r#"
 2312        one
 2313        two
 2314        three
 2315        ˇfour
 2316        five
 2317        sixˇ
 2318        seven
 2319        eight
 2320        nine
 2321        ten
 2322        "#
 2323        .unindent(),
 2324    );
 2325
 2326    cx.update_editor(|editor, window, cx| {
 2327        editor.move_page_down(&MovePageDown::default(), window, cx)
 2328    });
 2329    cx.assert_editor_state(
 2330        &r#"
 2331        one
 2332        two
 2333        three
 2334        four
 2335        five
 2336        six
 2337        ˇseven
 2338        eight
 2339        nineˇ
 2340        ten
 2341        "#
 2342        .unindent(),
 2343    );
 2344
 2345    cx.update_editor(|editor, window, cx| editor.move_page_up(&MovePageUp::default(), window, cx));
 2346    cx.assert_editor_state(
 2347        &r#"
 2348        one
 2349        two
 2350        three
 2351        ˇfour
 2352        five
 2353        sixˇ
 2354        seven
 2355        eight
 2356        nine
 2357        ten
 2358        "#
 2359        .unindent(),
 2360    );
 2361
 2362    cx.update_editor(|editor, window, cx| editor.move_page_up(&MovePageUp::default(), window, cx));
 2363    cx.assert_editor_state(
 2364        &r#"
 2365        ˇone
 2366        two
 2367        threeˇ
 2368        four
 2369        five
 2370        six
 2371        seven
 2372        eight
 2373        nine
 2374        ten
 2375        "#
 2376        .unindent(),
 2377    );
 2378
 2379    // Test select collapsing
 2380    cx.update_editor(|editor, window, cx| {
 2381        editor.move_page_down(&MovePageDown::default(), window, cx);
 2382        editor.move_page_down(&MovePageDown::default(), window, cx);
 2383        editor.move_page_down(&MovePageDown::default(), window, cx);
 2384    });
 2385    cx.assert_editor_state(
 2386        &r#"
 2387        one
 2388        two
 2389        three
 2390        four
 2391        five
 2392        six
 2393        seven
 2394        eight
 2395        nine
 2396        ˇten
 2397        ˇ"#
 2398        .unindent(),
 2399    );
 2400}
 2401
 2402#[gpui::test]
 2403async fn test_delete_to_beginning_of_line(cx: &mut TestAppContext) {
 2404    init_test(cx, |_| {});
 2405    let mut cx = EditorTestContext::new(cx).await;
 2406    cx.set_state("one «two threeˇ» four");
 2407    cx.update_editor(|editor, window, cx| {
 2408        editor.delete_to_beginning_of_line(
 2409            &DeleteToBeginningOfLine {
 2410                stop_at_indent: false,
 2411            },
 2412            window,
 2413            cx,
 2414        );
 2415        assert_eq!(editor.text(cx), " four");
 2416    });
 2417}
 2418
 2419#[gpui::test]
 2420fn test_delete_to_word_boundary(cx: &mut TestAppContext) {
 2421    init_test(cx, |_| {});
 2422
 2423    let editor = cx.add_window(|window, cx| {
 2424        let buffer = MultiBuffer::build_simple("one two three four", cx);
 2425        build_editor(buffer.clone(), window, cx)
 2426    });
 2427
 2428    _ = editor.update(cx, |editor, window, cx| {
 2429        editor.change_selections(None, window, cx, |s| {
 2430            s.select_display_ranges([
 2431                // an empty selection - the preceding word fragment is deleted
 2432                DisplayPoint::new(DisplayRow(0), 2)..DisplayPoint::new(DisplayRow(0), 2),
 2433                // characters selected - they are deleted
 2434                DisplayPoint::new(DisplayRow(0), 9)..DisplayPoint::new(DisplayRow(0), 12),
 2435            ])
 2436        });
 2437        editor.delete_to_previous_word_start(
 2438            &DeleteToPreviousWordStart {
 2439                ignore_newlines: false,
 2440            },
 2441            window,
 2442            cx,
 2443        );
 2444        assert_eq!(editor.buffer.read(cx).read(cx).text(), "e two te four");
 2445    });
 2446
 2447    _ = editor.update(cx, |editor, window, cx| {
 2448        editor.change_selections(None, window, cx, |s| {
 2449            s.select_display_ranges([
 2450                // an empty selection - the following word fragment is deleted
 2451                DisplayPoint::new(DisplayRow(0), 3)..DisplayPoint::new(DisplayRow(0), 3),
 2452                // characters selected - they are deleted
 2453                DisplayPoint::new(DisplayRow(0), 9)..DisplayPoint::new(DisplayRow(0), 10),
 2454            ])
 2455        });
 2456        editor.delete_to_next_word_end(
 2457            &DeleteToNextWordEnd {
 2458                ignore_newlines: false,
 2459            },
 2460            window,
 2461            cx,
 2462        );
 2463        assert_eq!(editor.buffer.read(cx).read(cx).text(), "e t te our");
 2464    });
 2465}
 2466
 2467#[gpui::test]
 2468fn test_delete_to_previous_word_start_or_newline(cx: &mut TestAppContext) {
 2469    init_test(cx, |_| {});
 2470
 2471    let editor = cx.add_window(|window, cx| {
 2472        let buffer = MultiBuffer::build_simple("one\n2\nthree\n4", cx);
 2473        build_editor(buffer.clone(), window, cx)
 2474    });
 2475    let del_to_prev_word_start = DeleteToPreviousWordStart {
 2476        ignore_newlines: false,
 2477    };
 2478    let del_to_prev_word_start_ignore_newlines = DeleteToPreviousWordStart {
 2479        ignore_newlines: true,
 2480    };
 2481
 2482    _ = editor.update(cx, |editor, window, cx| {
 2483        editor.change_selections(None, window, cx, |s| {
 2484            s.select_display_ranges([
 2485                DisplayPoint::new(DisplayRow(3), 1)..DisplayPoint::new(DisplayRow(3), 1)
 2486            ])
 2487        });
 2488        editor.delete_to_previous_word_start(&del_to_prev_word_start, window, cx);
 2489        assert_eq!(editor.buffer.read(cx).read(cx).text(), "one\n2\nthree\n");
 2490        editor.delete_to_previous_word_start(&del_to_prev_word_start, window, cx);
 2491        assert_eq!(editor.buffer.read(cx).read(cx).text(), "one\n2\nthree");
 2492        editor.delete_to_previous_word_start(&del_to_prev_word_start, window, cx);
 2493        assert_eq!(editor.buffer.read(cx).read(cx).text(), "one\n2\n");
 2494        editor.delete_to_previous_word_start(&del_to_prev_word_start, window, cx);
 2495        assert_eq!(editor.buffer.read(cx).read(cx).text(), "one\n2");
 2496        editor.delete_to_previous_word_start(&del_to_prev_word_start_ignore_newlines, window, cx);
 2497        assert_eq!(editor.buffer.read(cx).read(cx).text(), "one\n");
 2498        editor.delete_to_previous_word_start(&del_to_prev_word_start_ignore_newlines, window, cx);
 2499        assert_eq!(editor.buffer.read(cx).read(cx).text(), "");
 2500    });
 2501}
 2502
 2503#[gpui::test]
 2504fn test_delete_to_next_word_end_or_newline(cx: &mut TestAppContext) {
 2505    init_test(cx, |_| {});
 2506
 2507    let editor = cx.add_window(|window, cx| {
 2508        let buffer = MultiBuffer::build_simple("\none\n   two\nthree\n   four", cx);
 2509        build_editor(buffer.clone(), window, cx)
 2510    });
 2511    let del_to_next_word_end = DeleteToNextWordEnd {
 2512        ignore_newlines: false,
 2513    };
 2514    let del_to_next_word_end_ignore_newlines = DeleteToNextWordEnd {
 2515        ignore_newlines: true,
 2516    };
 2517
 2518    _ = editor.update(cx, |editor, window, cx| {
 2519        editor.change_selections(None, window, cx, |s| {
 2520            s.select_display_ranges([
 2521                DisplayPoint::new(DisplayRow(0), 0)..DisplayPoint::new(DisplayRow(0), 0)
 2522            ])
 2523        });
 2524        editor.delete_to_next_word_end(&del_to_next_word_end, window, cx);
 2525        assert_eq!(
 2526            editor.buffer.read(cx).read(cx).text(),
 2527            "one\n   two\nthree\n   four"
 2528        );
 2529        editor.delete_to_next_word_end(&del_to_next_word_end, window, cx);
 2530        assert_eq!(
 2531            editor.buffer.read(cx).read(cx).text(),
 2532            "\n   two\nthree\n   four"
 2533        );
 2534        editor.delete_to_next_word_end(&del_to_next_word_end, window, cx);
 2535        assert_eq!(
 2536            editor.buffer.read(cx).read(cx).text(),
 2537            "two\nthree\n   four"
 2538        );
 2539        editor.delete_to_next_word_end(&del_to_next_word_end, window, cx);
 2540        assert_eq!(editor.buffer.read(cx).read(cx).text(), "\nthree\n   four");
 2541        editor.delete_to_next_word_end(&del_to_next_word_end_ignore_newlines, window, cx);
 2542        assert_eq!(editor.buffer.read(cx).read(cx).text(), "\n   four");
 2543        editor.delete_to_next_word_end(&del_to_next_word_end_ignore_newlines, window, cx);
 2544        assert_eq!(editor.buffer.read(cx).read(cx).text(), "");
 2545    });
 2546}
 2547
 2548#[gpui::test]
 2549fn test_newline(cx: &mut TestAppContext) {
 2550    init_test(cx, |_| {});
 2551
 2552    let editor = cx.add_window(|window, cx| {
 2553        let buffer = MultiBuffer::build_simple("aaaa\n    bbbb\n", cx);
 2554        build_editor(buffer.clone(), window, cx)
 2555    });
 2556
 2557    _ = editor.update(cx, |editor, window, cx| {
 2558        editor.change_selections(None, window, cx, |s| {
 2559            s.select_display_ranges([
 2560                DisplayPoint::new(DisplayRow(0), 2)..DisplayPoint::new(DisplayRow(0), 2),
 2561                DisplayPoint::new(DisplayRow(1), 2)..DisplayPoint::new(DisplayRow(1), 2),
 2562                DisplayPoint::new(DisplayRow(1), 6)..DisplayPoint::new(DisplayRow(1), 6),
 2563            ])
 2564        });
 2565
 2566        editor.newline(&Newline, window, cx);
 2567        assert_eq!(editor.text(cx), "aa\naa\n  \n    bb\n    bb\n");
 2568    });
 2569}
 2570
 2571#[gpui::test]
 2572fn test_newline_with_old_selections(cx: &mut TestAppContext) {
 2573    init_test(cx, |_| {});
 2574
 2575    let editor = cx.add_window(|window, cx| {
 2576        let buffer = MultiBuffer::build_simple(
 2577            "
 2578                a
 2579                b(
 2580                    X
 2581                )
 2582                c(
 2583                    X
 2584                )
 2585            "
 2586            .unindent()
 2587            .as_str(),
 2588            cx,
 2589        );
 2590        let mut editor = build_editor(buffer.clone(), window, cx);
 2591        editor.change_selections(None, window, cx, |s| {
 2592            s.select_ranges([
 2593                Point::new(2, 4)..Point::new(2, 5),
 2594                Point::new(5, 4)..Point::new(5, 5),
 2595            ])
 2596        });
 2597        editor
 2598    });
 2599
 2600    _ = editor.update(cx, |editor, window, cx| {
 2601        // Edit the buffer directly, deleting ranges surrounding the editor's selections
 2602        editor.buffer.update(cx, |buffer, cx| {
 2603            buffer.edit(
 2604                [
 2605                    (Point::new(1, 2)..Point::new(3, 0), ""),
 2606                    (Point::new(4, 2)..Point::new(6, 0), ""),
 2607                ],
 2608                None,
 2609                cx,
 2610            );
 2611            assert_eq!(
 2612                buffer.read(cx).text(),
 2613                "
 2614                    a
 2615                    b()
 2616                    c()
 2617                "
 2618                .unindent()
 2619            );
 2620        });
 2621        assert_eq!(
 2622            editor.selections.ranges(cx),
 2623            &[
 2624                Point::new(1, 2)..Point::new(1, 2),
 2625                Point::new(2, 2)..Point::new(2, 2),
 2626            ],
 2627        );
 2628
 2629        editor.newline(&Newline, window, cx);
 2630        assert_eq!(
 2631            editor.text(cx),
 2632            "
 2633                a
 2634                b(
 2635                )
 2636                c(
 2637                )
 2638            "
 2639            .unindent()
 2640        );
 2641
 2642        // The selections are moved after the inserted newlines
 2643        assert_eq!(
 2644            editor.selections.ranges(cx),
 2645            &[
 2646                Point::new(2, 0)..Point::new(2, 0),
 2647                Point::new(4, 0)..Point::new(4, 0),
 2648            ],
 2649        );
 2650    });
 2651}
 2652
 2653#[gpui::test]
 2654async fn test_newline_above(cx: &mut TestAppContext) {
 2655    init_test(cx, |settings| {
 2656        settings.defaults.tab_size = NonZeroU32::new(4)
 2657    });
 2658
 2659    let language = Arc::new(
 2660        Language::new(
 2661            LanguageConfig::default(),
 2662            Some(tree_sitter_rust::LANGUAGE.into()),
 2663        )
 2664        .with_indents_query(r#"(_ "(" ")" @end) @indent"#)
 2665        .unwrap(),
 2666    );
 2667
 2668    let mut cx = EditorTestContext::new(cx).await;
 2669    cx.update_buffer(|buffer, cx| buffer.set_language(Some(language), cx));
 2670    cx.set_state(indoc! {"
 2671        const a: ˇA = (
 2672 2673                «const_functionˇ»(ˇ),
 2674                so«mˇ»et«hˇ»ing_ˇelse,ˇ
 2675 2676        ˇ);ˇ
 2677    "});
 2678
 2679    cx.update_editor(|e, window, cx| e.newline_above(&NewlineAbove, window, cx));
 2680    cx.assert_editor_state(indoc! {"
 2681        ˇ
 2682        const a: A = (
 2683            ˇ
 2684            (
 2685                ˇ
 2686                ˇ
 2687                const_function(),
 2688                ˇ
 2689                ˇ
 2690                ˇ
 2691                ˇ
 2692                something_else,
 2693                ˇ
 2694            )
 2695            ˇ
 2696            ˇ
 2697        );
 2698    "});
 2699}
 2700
 2701#[gpui::test]
 2702async fn test_newline_below(cx: &mut TestAppContext) {
 2703    init_test(cx, |settings| {
 2704        settings.defaults.tab_size = NonZeroU32::new(4)
 2705    });
 2706
 2707    let language = Arc::new(
 2708        Language::new(
 2709            LanguageConfig::default(),
 2710            Some(tree_sitter_rust::LANGUAGE.into()),
 2711        )
 2712        .with_indents_query(r#"(_ "(" ")" @end) @indent"#)
 2713        .unwrap(),
 2714    );
 2715
 2716    let mut cx = EditorTestContext::new(cx).await;
 2717    cx.update_buffer(|buffer, cx| buffer.set_language(Some(language), cx));
 2718    cx.set_state(indoc! {"
 2719        const a: ˇA = (
 2720 2721                «const_functionˇ»(ˇ),
 2722                so«mˇ»et«hˇ»ing_ˇelse,ˇ
 2723 2724        ˇ);ˇ
 2725    "});
 2726
 2727    cx.update_editor(|e, window, cx| e.newline_below(&NewlineBelow, window, cx));
 2728    cx.assert_editor_state(indoc! {"
 2729        const a: A = (
 2730            ˇ
 2731            (
 2732                ˇ
 2733                const_function(),
 2734                ˇ
 2735                ˇ
 2736                something_else,
 2737                ˇ
 2738                ˇ
 2739                ˇ
 2740                ˇ
 2741            )
 2742            ˇ
 2743        );
 2744        ˇ
 2745        ˇ
 2746    "});
 2747}
 2748
 2749#[gpui::test]
 2750async fn test_newline_comments(cx: &mut TestAppContext) {
 2751    init_test(cx, |settings| {
 2752        settings.defaults.tab_size = NonZeroU32::new(4)
 2753    });
 2754
 2755    let language = Arc::new(Language::new(
 2756        LanguageConfig {
 2757            line_comments: vec!["//".into()],
 2758            ..LanguageConfig::default()
 2759        },
 2760        None,
 2761    ));
 2762    {
 2763        let mut cx = EditorTestContext::new(cx).await;
 2764        cx.update_buffer(|buffer, cx| buffer.set_language(Some(language), cx));
 2765        cx.set_state(indoc! {"
 2766        // Fooˇ
 2767    "});
 2768
 2769        cx.update_editor(|e, window, cx| e.newline(&Newline, window, cx));
 2770        cx.assert_editor_state(indoc! {"
 2771        // Foo
 2772        //ˇ
 2773    "});
 2774        // Ensure that if cursor is before the comment start, we do not actually insert a comment prefix.
 2775        cx.set_state(indoc! {"
 2776        ˇ// Foo
 2777    "});
 2778        cx.update_editor(|e, window, cx| e.newline(&Newline, window, cx));
 2779        cx.assert_editor_state(indoc! {"
 2780
 2781        ˇ// Foo
 2782    "});
 2783    }
 2784    // Ensure that comment continuations can be disabled.
 2785    update_test_language_settings(cx, |settings| {
 2786        settings.defaults.extend_comment_on_newline = Some(false);
 2787    });
 2788    let mut cx = EditorTestContext::new(cx).await;
 2789    cx.set_state(indoc! {"
 2790        // Fooˇ
 2791    "});
 2792    cx.update_editor(|e, window, cx| e.newline(&Newline, window, cx));
 2793    cx.assert_editor_state(indoc! {"
 2794        // Foo
 2795        ˇ
 2796    "});
 2797}
 2798
 2799#[gpui::test]
 2800fn test_insert_with_old_selections(cx: &mut TestAppContext) {
 2801    init_test(cx, |_| {});
 2802
 2803    let editor = cx.add_window(|window, cx| {
 2804        let buffer = MultiBuffer::build_simple("a( X ), b( Y ), c( Z )", cx);
 2805        let mut editor = build_editor(buffer.clone(), window, cx);
 2806        editor.change_selections(None, window, cx, |s| {
 2807            s.select_ranges([3..4, 11..12, 19..20])
 2808        });
 2809        editor
 2810    });
 2811
 2812    _ = editor.update(cx, |editor, window, cx| {
 2813        // Edit the buffer directly, deleting ranges surrounding the editor's selections
 2814        editor.buffer.update(cx, |buffer, cx| {
 2815            buffer.edit([(2..5, ""), (10..13, ""), (18..21, "")], None, cx);
 2816            assert_eq!(buffer.read(cx).text(), "a(), b(), c()".unindent());
 2817        });
 2818        assert_eq!(editor.selections.ranges(cx), &[2..2, 7..7, 12..12],);
 2819
 2820        editor.insert("Z", window, cx);
 2821        assert_eq!(editor.text(cx), "a(Z), b(Z), c(Z)");
 2822
 2823        // The selections are moved after the inserted characters
 2824        assert_eq!(editor.selections.ranges(cx), &[3..3, 9..9, 15..15],);
 2825    });
 2826}
 2827
 2828#[gpui::test]
 2829async fn test_tab(cx: &mut TestAppContext) {
 2830    init_test(cx, |settings| {
 2831        settings.defaults.tab_size = NonZeroU32::new(3)
 2832    });
 2833
 2834    let mut cx = EditorTestContext::new(cx).await;
 2835    cx.set_state(indoc! {"
 2836        ˇabˇc
 2837        ˇ🏀ˇ🏀ˇefg
 2838 2839    "});
 2840    cx.update_editor(|e, window, cx| e.tab(&Tab, window, cx));
 2841    cx.assert_editor_state(indoc! {"
 2842           ˇab ˇc
 2843           ˇ🏀  ˇ🏀  ˇefg
 2844        d  ˇ
 2845    "});
 2846
 2847    cx.set_state(indoc! {"
 2848        a
 2849        «🏀ˇ»🏀«🏀ˇ»🏀«🏀ˇ»
 2850    "});
 2851    cx.update_editor(|e, window, cx| e.tab(&Tab, window, cx));
 2852    cx.assert_editor_state(indoc! {"
 2853        a
 2854           «🏀ˇ»🏀«🏀ˇ»🏀«🏀ˇ»
 2855    "});
 2856}
 2857
 2858#[gpui::test]
 2859async fn test_tab_in_leading_whitespace_auto_indents_lines(cx: &mut TestAppContext) {
 2860    init_test(cx, |_| {});
 2861
 2862    let mut cx = EditorTestContext::new(cx).await;
 2863    let language = Arc::new(
 2864        Language::new(
 2865            LanguageConfig::default(),
 2866            Some(tree_sitter_rust::LANGUAGE.into()),
 2867        )
 2868        .with_indents_query(r#"(_ "(" ")" @end) @indent"#)
 2869        .unwrap(),
 2870    );
 2871    cx.update_buffer(|buffer, cx| buffer.set_language(Some(language), cx));
 2872
 2873    // cursors that are already at the suggested indent level insert
 2874    // a soft tab. cursors that are to the left of the suggested indent
 2875    // auto-indent their line.
 2876    cx.set_state(indoc! {"
 2877        ˇ
 2878        const a: B = (
 2879            c(
 2880                d(
 2881        ˇ
 2882                )
 2883        ˇ
 2884        ˇ    )
 2885        );
 2886    "});
 2887    cx.update_editor(|e, window, cx| e.tab(&Tab, window, cx));
 2888    cx.assert_editor_state(indoc! {"
 2889            ˇ
 2890        const a: B = (
 2891            c(
 2892                d(
 2893                    ˇ
 2894                )
 2895                ˇ
 2896            ˇ)
 2897        );
 2898    "});
 2899
 2900    // handle auto-indent when there are multiple cursors on the same line
 2901    cx.set_state(indoc! {"
 2902        const a: B = (
 2903            c(
 2904        ˇ    ˇ
 2905        ˇ    )
 2906        );
 2907    "});
 2908    cx.update_editor(|e, window, cx| e.tab(&Tab, window, cx));
 2909    cx.assert_editor_state(indoc! {"
 2910        const a: B = (
 2911            c(
 2912                ˇ
 2913            ˇ)
 2914        );
 2915    "});
 2916}
 2917
 2918#[gpui::test]
 2919async fn test_tab_with_mixed_whitespace_txt(cx: &mut TestAppContext) {
 2920    init_test(cx, |settings| {
 2921        settings.defaults.tab_size = NonZeroU32::new(3)
 2922    });
 2923
 2924    let mut cx = EditorTestContext::new(cx).await;
 2925    cx.set_state(indoc! {"
 2926         ˇ
 2927        \t ˇ
 2928        \t  ˇ
 2929        \t   ˇ
 2930         \t  \t\t \t      \t\t   \t\t    \t \t ˇ
 2931    "});
 2932
 2933    cx.update_editor(|e, window, cx| e.tab(&Tab, window, cx));
 2934    cx.assert_editor_state(indoc! {"
 2935           ˇ
 2936        \t   ˇ
 2937        \t   ˇ
 2938        \t      ˇ
 2939         \t  \t\t \t      \t\t   \t\t    \t \t   ˇ
 2940    "});
 2941}
 2942
 2943#[gpui::test]
 2944async fn test_tab_with_mixed_whitespace_rust(cx: &mut TestAppContext) {
 2945    init_test(cx, |settings| {
 2946        settings.defaults.tab_size = NonZeroU32::new(4)
 2947    });
 2948
 2949    let language = Arc::new(
 2950        Language::new(
 2951            LanguageConfig::default(),
 2952            Some(tree_sitter_rust::LANGUAGE.into()),
 2953        )
 2954        .with_indents_query(r#"(_ "{" "}" @end) @indent"#)
 2955        .unwrap(),
 2956    );
 2957
 2958    let mut cx = EditorTestContext::new(cx).await;
 2959    cx.update_buffer(|buffer, cx| buffer.set_language(Some(language), cx));
 2960    cx.set_state(indoc! {"
 2961        fn a() {
 2962            if b {
 2963        \t ˇc
 2964            }
 2965        }
 2966    "});
 2967
 2968    cx.update_editor(|e, window, cx| e.tab(&Tab, window, cx));
 2969    cx.assert_editor_state(indoc! {"
 2970        fn a() {
 2971            if b {
 2972                ˇc
 2973            }
 2974        }
 2975    "});
 2976}
 2977
 2978#[gpui::test]
 2979async fn test_indent_outdent(cx: &mut TestAppContext) {
 2980    init_test(cx, |settings| {
 2981        settings.defaults.tab_size = NonZeroU32::new(4);
 2982    });
 2983
 2984    let mut cx = EditorTestContext::new(cx).await;
 2985
 2986    cx.set_state(indoc! {"
 2987          «oneˇ» «twoˇ»
 2988        three
 2989         four
 2990    "});
 2991    cx.update_editor(|e, window, cx| e.tab(&Tab, window, cx));
 2992    cx.assert_editor_state(indoc! {"
 2993            «oneˇ» «twoˇ»
 2994        three
 2995         four
 2996    "});
 2997
 2998    cx.update_editor(|e, window, cx| e.backtab(&Backtab, window, cx));
 2999    cx.assert_editor_state(indoc! {"
 3000        «oneˇ» «twoˇ»
 3001        three
 3002         four
 3003    "});
 3004
 3005    // select across line ending
 3006    cx.set_state(indoc! {"
 3007        one two
 3008        t«hree
 3009        ˇ» four
 3010    "});
 3011    cx.update_editor(|e, window, cx| e.tab(&Tab, window, cx));
 3012    cx.assert_editor_state(indoc! {"
 3013        one two
 3014            t«hree
 3015        ˇ» four
 3016    "});
 3017
 3018    cx.update_editor(|e, window, cx| e.backtab(&Backtab, window, cx));
 3019    cx.assert_editor_state(indoc! {"
 3020        one two
 3021        t«hree
 3022        ˇ» four
 3023    "});
 3024
 3025    // Ensure that indenting/outdenting works when the cursor is at column 0.
 3026    cx.set_state(indoc! {"
 3027        one two
 3028        ˇthree
 3029            four
 3030    "});
 3031    cx.update_editor(|e, window, cx| e.tab(&Tab, window, cx));
 3032    cx.assert_editor_state(indoc! {"
 3033        one two
 3034            ˇthree
 3035            four
 3036    "});
 3037
 3038    cx.set_state(indoc! {"
 3039        one two
 3040        ˇ    three
 3041            four
 3042    "});
 3043    cx.update_editor(|e, window, cx| e.backtab(&Backtab, window, cx));
 3044    cx.assert_editor_state(indoc! {"
 3045        one two
 3046        ˇthree
 3047            four
 3048    "});
 3049}
 3050
 3051#[gpui::test]
 3052async fn test_indent_outdent_with_hard_tabs(cx: &mut TestAppContext) {
 3053    init_test(cx, |settings| {
 3054        settings.defaults.hard_tabs = Some(true);
 3055    });
 3056
 3057    let mut cx = EditorTestContext::new(cx).await;
 3058
 3059    // select two ranges on one line
 3060    cx.set_state(indoc! {"
 3061        «oneˇ» «twoˇ»
 3062        three
 3063        four
 3064    "});
 3065    cx.update_editor(|e, window, cx| e.tab(&Tab, window, cx));
 3066    cx.assert_editor_state(indoc! {"
 3067        \t«oneˇ» «twoˇ»
 3068        three
 3069        four
 3070    "});
 3071    cx.update_editor(|e, window, cx| e.tab(&Tab, window, cx));
 3072    cx.assert_editor_state(indoc! {"
 3073        \t\t«oneˇ» «twoˇ»
 3074        three
 3075        four
 3076    "});
 3077    cx.update_editor(|e, window, cx| e.backtab(&Backtab, window, cx));
 3078    cx.assert_editor_state(indoc! {"
 3079        \t«oneˇ» «twoˇ»
 3080        three
 3081        four
 3082    "});
 3083    cx.update_editor(|e, window, cx| e.backtab(&Backtab, window, cx));
 3084    cx.assert_editor_state(indoc! {"
 3085        «oneˇ» «twoˇ»
 3086        three
 3087        four
 3088    "});
 3089
 3090    // select across a line ending
 3091    cx.set_state(indoc! {"
 3092        one two
 3093        t«hree
 3094        ˇ»four
 3095    "});
 3096    cx.update_editor(|e, window, cx| e.tab(&Tab, window, cx));
 3097    cx.assert_editor_state(indoc! {"
 3098        one two
 3099        \tt«hree
 3100        ˇ»four
 3101    "});
 3102    cx.update_editor(|e, window, cx| e.tab(&Tab, window, cx));
 3103    cx.assert_editor_state(indoc! {"
 3104        one two
 3105        \t\tt«hree
 3106        ˇ»four
 3107    "});
 3108    cx.update_editor(|e, window, cx| e.backtab(&Backtab, window, cx));
 3109    cx.assert_editor_state(indoc! {"
 3110        one two
 3111        \tt«hree
 3112        ˇ»four
 3113    "});
 3114    cx.update_editor(|e, window, cx| e.backtab(&Backtab, window, cx));
 3115    cx.assert_editor_state(indoc! {"
 3116        one two
 3117        t«hree
 3118        ˇ»four
 3119    "});
 3120
 3121    // Ensure that indenting/outdenting works when the cursor is at column 0.
 3122    cx.set_state(indoc! {"
 3123        one two
 3124        ˇthree
 3125        four
 3126    "});
 3127    cx.update_editor(|e, window, cx| e.backtab(&Backtab, window, cx));
 3128    cx.assert_editor_state(indoc! {"
 3129        one two
 3130        ˇthree
 3131        four
 3132    "});
 3133    cx.update_editor(|e, window, cx| e.tab(&Tab, window, cx));
 3134    cx.assert_editor_state(indoc! {"
 3135        one two
 3136        \tˇthree
 3137        four
 3138    "});
 3139    cx.update_editor(|e, window, cx| e.backtab(&Backtab, window, cx));
 3140    cx.assert_editor_state(indoc! {"
 3141        one two
 3142        ˇthree
 3143        four
 3144    "});
 3145}
 3146
 3147#[gpui::test]
 3148fn test_indent_outdent_with_excerpts(cx: &mut TestAppContext) {
 3149    init_test(cx, |settings| {
 3150        settings.languages.extend([
 3151            (
 3152                "TOML".into(),
 3153                LanguageSettingsContent {
 3154                    tab_size: NonZeroU32::new(2),
 3155                    ..Default::default()
 3156                },
 3157            ),
 3158            (
 3159                "Rust".into(),
 3160                LanguageSettingsContent {
 3161                    tab_size: NonZeroU32::new(4),
 3162                    ..Default::default()
 3163                },
 3164            ),
 3165        ]);
 3166    });
 3167
 3168    let toml_language = Arc::new(Language::new(
 3169        LanguageConfig {
 3170            name: "TOML".into(),
 3171            ..Default::default()
 3172        },
 3173        None,
 3174    ));
 3175    let rust_language = Arc::new(Language::new(
 3176        LanguageConfig {
 3177            name: "Rust".into(),
 3178            ..Default::default()
 3179        },
 3180        None,
 3181    ));
 3182
 3183    let toml_buffer =
 3184        cx.new(|cx| Buffer::local("a = 1\nb = 2\n", cx).with_language(toml_language, cx));
 3185    let rust_buffer =
 3186        cx.new(|cx| Buffer::local("const c: usize = 3;\n", cx).with_language(rust_language, cx));
 3187    let multibuffer = cx.new(|cx| {
 3188        let mut multibuffer = MultiBuffer::new(ReadWrite);
 3189        multibuffer.push_excerpts(
 3190            toml_buffer.clone(),
 3191            [ExcerptRange::new(Point::new(0, 0)..Point::new(2, 0))],
 3192            cx,
 3193        );
 3194        multibuffer.push_excerpts(
 3195            rust_buffer.clone(),
 3196            [ExcerptRange::new(Point::new(0, 0)..Point::new(1, 0))],
 3197            cx,
 3198        );
 3199        multibuffer
 3200    });
 3201
 3202    cx.add_window(|window, cx| {
 3203        let mut editor = build_editor(multibuffer, window, cx);
 3204
 3205        assert_eq!(
 3206            editor.text(cx),
 3207            indoc! {"
 3208                a = 1
 3209                b = 2
 3210
 3211                const c: usize = 3;
 3212            "}
 3213        );
 3214
 3215        select_ranges(
 3216            &mut editor,
 3217            indoc! {"
 3218                «aˇ» = 1
 3219                b = 2
 3220
 3221                «const c:ˇ» usize = 3;
 3222            "},
 3223            window,
 3224            cx,
 3225        );
 3226
 3227        editor.tab(&Tab, window, cx);
 3228        assert_text_with_selections(
 3229            &mut editor,
 3230            indoc! {"
 3231                  «aˇ» = 1
 3232                b = 2
 3233
 3234                    «const c:ˇ» usize = 3;
 3235            "},
 3236            cx,
 3237        );
 3238        editor.backtab(&Backtab, window, cx);
 3239        assert_text_with_selections(
 3240            &mut editor,
 3241            indoc! {"
 3242                «aˇ» = 1
 3243                b = 2
 3244
 3245                «const c:ˇ» usize = 3;
 3246            "},
 3247            cx,
 3248        );
 3249
 3250        editor
 3251    });
 3252}
 3253
 3254#[gpui::test]
 3255async fn test_backspace(cx: &mut TestAppContext) {
 3256    init_test(cx, |_| {});
 3257
 3258    let mut cx = EditorTestContext::new(cx).await;
 3259
 3260    // Basic backspace
 3261    cx.set_state(indoc! {"
 3262        onˇe two three
 3263        fou«rˇ» five six
 3264        seven «ˇeight nine
 3265        »ten
 3266    "});
 3267    cx.update_editor(|e, window, cx| e.backspace(&Backspace, window, cx));
 3268    cx.assert_editor_state(indoc! {"
 3269        oˇe two three
 3270        fouˇ five six
 3271        seven ˇten
 3272    "});
 3273
 3274    // Test backspace inside and around indents
 3275    cx.set_state(indoc! {"
 3276        zero
 3277            ˇone
 3278                ˇtwo
 3279            ˇ ˇ ˇ  three
 3280        ˇ  ˇ  four
 3281    "});
 3282    cx.update_editor(|e, window, cx| e.backspace(&Backspace, window, cx));
 3283    cx.assert_editor_state(indoc! {"
 3284        zero
 3285        ˇone
 3286            ˇtwo
 3287        ˇ  threeˇ  four
 3288    "});
 3289}
 3290
 3291#[gpui::test]
 3292async fn test_delete(cx: &mut TestAppContext) {
 3293    init_test(cx, |_| {});
 3294
 3295    let mut cx = EditorTestContext::new(cx).await;
 3296    cx.set_state(indoc! {"
 3297        onˇe two three
 3298        fou«rˇ» five six
 3299        seven «ˇeight nine
 3300        »ten
 3301    "});
 3302    cx.update_editor(|e, window, cx| e.delete(&Delete, window, cx));
 3303    cx.assert_editor_state(indoc! {"
 3304        onˇ two three
 3305        fouˇ five six
 3306        seven ˇten
 3307    "});
 3308}
 3309
 3310#[gpui::test]
 3311fn test_delete_line(cx: &mut TestAppContext) {
 3312    init_test(cx, |_| {});
 3313
 3314    let editor = cx.add_window(|window, cx| {
 3315        let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
 3316        build_editor(buffer, window, cx)
 3317    });
 3318    _ = editor.update(cx, |editor, window, cx| {
 3319        editor.change_selections(None, window, cx, |s| {
 3320            s.select_display_ranges([
 3321                DisplayPoint::new(DisplayRow(0), 1)..DisplayPoint::new(DisplayRow(0), 1),
 3322                DisplayPoint::new(DisplayRow(1), 0)..DisplayPoint::new(DisplayRow(1), 1),
 3323                DisplayPoint::new(DisplayRow(3), 0)..DisplayPoint::new(DisplayRow(3), 0),
 3324            ])
 3325        });
 3326        editor.delete_line(&DeleteLine, window, cx);
 3327        assert_eq!(editor.display_text(cx), "ghi");
 3328        assert_eq!(
 3329            editor.selections.display_ranges(cx),
 3330            vec![
 3331                DisplayPoint::new(DisplayRow(0), 0)..DisplayPoint::new(DisplayRow(0), 0),
 3332                DisplayPoint::new(DisplayRow(0), 1)..DisplayPoint::new(DisplayRow(0), 1)
 3333            ]
 3334        );
 3335    });
 3336
 3337    let editor = cx.add_window(|window, cx| {
 3338        let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
 3339        build_editor(buffer, window, cx)
 3340    });
 3341    _ = editor.update(cx, |editor, window, cx| {
 3342        editor.change_selections(None, window, cx, |s| {
 3343            s.select_display_ranges([
 3344                DisplayPoint::new(DisplayRow(2), 0)..DisplayPoint::new(DisplayRow(0), 1)
 3345            ])
 3346        });
 3347        editor.delete_line(&DeleteLine, window, cx);
 3348        assert_eq!(editor.display_text(cx), "ghi\n");
 3349        assert_eq!(
 3350            editor.selections.display_ranges(cx),
 3351            vec![DisplayPoint::new(DisplayRow(0), 1)..DisplayPoint::new(DisplayRow(0), 1)]
 3352        );
 3353    });
 3354}
 3355
 3356#[gpui::test]
 3357fn test_join_lines_with_single_selection(cx: &mut TestAppContext) {
 3358    init_test(cx, |_| {});
 3359
 3360    cx.add_window(|window, cx| {
 3361        let buffer = MultiBuffer::build_simple("aaa\nbbb\nccc\nddd\n\n", cx);
 3362        let mut editor = build_editor(buffer.clone(), window, cx);
 3363        let buffer = buffer.read(cx).as_singleton().unwrap();
 3364
 3365        assert_eq!(
 3366            editor.selections.ranges::<Point>(cx),
 3367            &[Point::new(0, 0)..Point::new(0, 0)]
 3368        );
 3369
 3370        // When on single line, replace newline at end by space
 3371        editor.join_lines(&JoinLines, window, cx);
 3372        assert_eq!(buffer.read(cx).text(), "aaa bbb\nccc\nddd\n\n");
 3373        assert_eq!(
 3374            editor.selections.ranges::<Point>(cx),
 3375            &[Point::new(0, 3)..Point::new(0, 3)]
 3376        );
 3377
 3378        // When multiple lines are selected, remove newlines that are spanned by the selection
 3379        editor.change_selections(None, window, cx, |s| {
 3380            s.select_ranges([Point::new(0, 5)..Point::new(2, 2)])
 3381        });
 3382        editor.join_lines(&JoinLines, window, cx);
 3383        assert_eq!(buffer.read(cx).text(), "aaa bbb ccc ddd\n\n");
 3384        assert_eq!(
 3385            editor.selections.ranges::<Point>(cx),
 3386            &[Point::new(0, 11)..Point::new(0, 11)]
 3387        );
 3388
 3389        // Undo should be transactional
 3390        editor.undo(&Undo, window, cx);
 3391        assert_eq!(buffer.read(cx).text(), "aaa bbb\nccc\nddd\n\n");
 3392        assert_eq!(
 3393            editor.selections.ranges::<Point>(cx),
 3394            &[Point::new(0, 5)..Point::new(2, 2)]
 3395        );
 3396
 3397        // When joining an empty line don't insert a space
 3398        editor.change_selections(None, window, cx, |s| {
 3399            s.select_ranges([Point::new(2, 1)..Point::new(2, 2)])
 3400        });
 3401        editor.join_lines(&JoinLines, window, cx);
 3402        assert_eq!(buffer.read(cx).text(), "aaa bbb\nccc\nddd\n");
 3403        assert_eq!(
 3404            editor.selections.ranges::<Point>(cx),
 3405            [Point::new(2, 3)..Point::new(2, 3)]
 3406        );
 3407
 3408        // We can remove trailing newlines
 3409        editor.join_lines(&JoinLines, window, cx);
 3410        assert_eq!(buffer.read(cx).text(), "aaa bbb\nccc\nddd");
 3411        assert_eq!(
 3412            editor.selections.ranges::<Point>(cx),
 3413            [Point::new(2, 3)..Point::new(2, 3)]
 3414        );
 3415
 3416        // We don't blow up on the last line
 3417        editor.join_lines(&JoinLines, window, cx);
 3418        assert_eq!(buffer.read(cx).text(), "aaa bbb\nccc\nddd");
 3419        assert_eq!(
 3420            editor.selections.ranges::<Point>(cx),
 3421            [Point::new(2, 3)..Point::new(2, 3)]
 3422        );
 3423
 3424        // reset to test indentation
 3425        editor.buffer.update(cx, |buffer, cx| {
 3426            buffer.edit(
 3427                [
 3428                    (Point::new(1, 0)..Point::new(1, 2), "  "),
 3429                    (Point::new(2, 0)..Point::new(2, 3), "  \n\td"),
 3430                ],
 3431                None,
 3432                cx,
 3433            )
 3434        });
 3435
 3436        // We remove any leading spaces
 3437        assert_eq!(buffer.read(cx).text(), "aaa bbb\n  c\n  \n\td");
 3438        editor.change_selections(None, window, cx, |s| {
 3439            s.select_ranges([Point::new(0, 1)..Point::new(0, 1)])
 3440        });
 3441        editor.join_lines(&JoinLines, window, cx);
 3442        assert_eq!(buffer.read(cx).text(), "aaa bbb c\n  \n\td");
 3443
 3444        // We don't insert a space for a line containing only spaces
 3445        editor.join_lines(&JoinLines, window, cx);
 3446        assert_eq!(buffer.read(cx).text(), "aaa bbb c\n\td");
 3447
 3448        // We ignore any leading tabs
 3449        editor.join_lines(&JoinLines, window, cx);
 3450        assert_eq!(buffer.read(cx).text(), "aaa bbb c d");
 3451
 3452        editor
 3453    });
 3454}
 3455
 3456#[gpui::test]
 3457fn test_join_lines_with_multi_selection(cx: &mut TestAppContext) {
 3458    init_test(cx, |_| {});
 3459
 3460    cx.add_window(|window, cx| {
 3461        let buffer = MultiBuffer::build_simple("aaa\nbbb\nccc\nddd\n\n", cx);
 3462        let mut editor = build_editor(buffer.clone(), window, cx);
 3463        let buffer = buffer.read(cx).as_singleton().unwrap();
 3464
 3465        editor.change_selections(None, window, cx, |s| {
 3466            s.select_ranges([
 3467                Point::new(0, 2)..Point::new(1, 1),
 3468                Point::new(1, 2)..Point::new(1, 2),
 3469                Point::new(3, 1)..Point::new(3, 2),
 3470            ])
 3471        });
 3472
 3473        editor.join_lines(&JoinLines, window, cx);
 3474        assert_eq!(buffer.read(cx).text(), "aaa bbb ccc\nddd\n");
 3475
 3476        assert_eq!(
 3477            editor.selections.ranges::<Point>(cx),
 3478            [
 3479                Point::new(0, 7)..Point::new(0, 7),
 3480                Point::new(1, 3)..Point::new(1, 3)
 3481            ]
 3482        );
 3483        editor
 3484    });
 3485}
 3486
 3487#[gpui::test]
 3488async fn test_join_lines_with_git_diff_base(executor: BackgroundExecutor, cx: &mut TestAppContext) {
 3489    init_test(cx, |_| {});
 3490
 3491    let mut cx = EditorTestContext::new(cx).await;
 3492
 3493    let diff_base = r#"
 3494        Line 0
 3495        Line 1
 3496        Line 2
 3497        Line 3
 3498        "#
 3499    .unindent();
 3500
 3501    cx.set_state(
 3502        &r#"
 3503        ˇLine 0
 3504        Line 1
 3505        Line 2
 3506        Line 3
 3507        "#
 3508        .unindent(),
 3509    );
 3510
 3511    cx.set_head_text(&diff_base);
 3512    executor.run_until_parked();
 3513
 3514    // Join lines
 3515    cx.update_editor(|editor, window, cx| {
 3516        editor.join_lines(&JoinLines, window, cx);
 3517    });
 3518    executor.run_until_parked();
 3519
 3520    cx.assert_editor_state(
 3521        &r#"
 3522        Line 0ˇ Line 1
 3523        Line 2
 3524        Line 3
 3525        "#
 3526        .unindent(),
 3527    );
 3528    // Join again
 3529    cx.update_editor(|editor, window, cx| {
 3530        editor.join_lines(&JoinLines, window, cx);
 3531    });
 3532    executor.run_until_parked();
 3533
 3534    cx.assert_editor_state(
 3535        &r#"
 3536        Line 0 Line 1ˇ Line 2
 3537        Line 3
 3538        "#
 3539        .unindent(),
 3540    );
 3541}
 3542
 3543#[gpui::test]
 3544async fn test_custom_newlines_cause_no_false_positive_diffs(
 3545    executor: BackgroundExecutor,
 3546    cx: &mut TestAppContext,
 3547) {
 3548    init_test(cx, |_| {});
 3549    let mut cx = EditorTestContext::new(cx).await;
 3550    cx.set_state("Line 0\r\nLine 1\rˇ\nLine 2\r\nLine 3");
 3551    cx.set_head_text("Line 0\r\nLine 1\r\nLine 2\r\nLine 3");
 3552    executor.run_until_parked();
 3553
 3554    cx.update_editor(|editor, window, cx| {
 3555        let snapshot = editor.snapshot(window, cx);
 3556        assert_eq!(
 3557            snapshot
 3558                .buffer_snapshot
 3559                .diff_hunks_in_range(0..snapshot.buffer_snapshot.len())
 3560                .collect::<Vec<_>>(),
 3561            Vec::new(),
 3562            "Should not have any diffs for files with custom newlines"
 3563        );
 3564    });
 3565}
 3566
 3567#[gpui::test]
 3568async fn test_manipulate_lines_with_single_selection(cx: &mut TestAppContext) {
 3569    init_test(cx, |_| {});
 3570
 3571    let mut cx = EditorTestContext::new(cx).await;
 3572
 3573    // Test sort_lines_case_insensitive()
 3574    cx.set_state(indoc! {"
 3575        «z
 3576        y
 3577        x
 3578        Z
 3579        Y
 3580        Xˇ»
 3581    "});
 3582    cx.update_editor(|e, window, cx| {
 3583        e.sort_lines_case_insensitive(&SortLinesCaseInsensitive, window, cx)
 3584    });
 3585    cx.assert_editor_state(indoc! {"
 3586        «x
 3587        X
 3588        y
 3589        Y
 3590        z
 3591        Zˇ»
 3592    "});
 3593
 3594    // Test reverse_lines()
 3595    cx.set_state(indoc! {"
 3596        «5
 3597        4
 3598        3
 3599        2
 3600        1ˇ»
 3601    "});
 3602    cx.update_editor(|e, window, cx| e.reverse_lines(&ReverseLines, window, cx));
 3603    cx.assert_editor_state(indoc! {"
 3604        «1
 3605        2
 3606        3
 3607        4
 3608        5ˇ»
 3609    "});
 3610
 3611    // Skip testing shuffle_line()
 3612
 3613    // From here on out, test more complex cases of manipulate_lines() with a single driver method: sort_lines_case_sensitive()
 3614    // Since all methods calling manipulate_lines() are doing the exact same general thing (reordering lines)
 3615
 3616    // Don't manipulate when cursor is on single line, but expand the selection
 3617    cx.set_state(indoc! {"
 3618        ddˇdd
 3619        ccc
 3620        bb
 3621        a
 3622    "});
 3623    cx.update_editor(|e, window, cx| {
 3624        e.sort_lines_case_sensitive(&SortLinesCaseSensitive, window, cx)
 3625    });
 3626    cx.assert_editor_state(indoc! {"
 3627        «ddddˇ»
 3628        ccc
 3629        bb
 3630        a
 3631    "});
 3632
 3633    // Basic manipulate case
 3634    // Start selection moves to column 0
 3635    // End of selection shrinks to fit shorter line
 3636    cx.set_state(indoc! {"
 3637        dd«d
 3638        ccc
 3639        bb
 3640        aaaaaˇ»
 3641    "});
 3642    cx.update_editor(|e, window, cx| {
 3643        e.sort_lines_case_sensitive(&SortLinesCaseSensitive, window, cx)
 3644    });
 3645    cx.assert_editor_state(indoc! {"
 3646        «aaaaa
 3647        bb
 3648        ccc
 3649        dddˇ»
 3650    "});
 3651
 3652    // Manipulate case with newlines
 3653    cx.set_state(indoc! {"
 3654        dd«d
 3655        ccc
 3656
 3657        bb
 3658        aaaaa
 3659
 3660        ˇ»
 3661    "});
 3662    cx.update_editor(|e, window, cx| {
 3663        e.sort_lines_case_sensitive(&SortLinesCaseSensitive, window, cx)
 3664    });
 3665    cx.assert_editor_state(indoc! {"
 3666        «
 3667
 3668        aaaaa
 3669        bb
 3670        ccc
 3671        dddˇ»
 3672
 3673    "});
 3674
 3675    // Adding new line
 3676    cx.set_state(indoc! {"
 3677        aa«a
 3678        bbˇ»b
 3679    "});
 3680    cx.update_editor(|e, window, cx| {
 3681        e.manipulate_lines(window, cx, |lines| lines.push("added_line"))
 3682    });
 3683    cx.assert_editor_state(indoc! {"
 3684        «aaa
 3685        bbb
 3686        added_lineˇ»
 3687    "});
 3688
 3689    // Removing line
 3690    cx.set_state(indoc! {"
 3691        aa«a
 3692        bbbˇ»
 3693    "});
 3694    cx.update_editor(|e, window, cx| {
 3695        e.manipulate_lines(window, cx, |lines| {
 3696            lines.pop();
 3697        })
 3698    });
 3699    cx.assert_editor_state(indoc! {"
 3700        «aaaˇ»
 3701    "});
 3702
 3703    // Removing all lines
 3704    cx.set_state(indoc! {"
 3705        aa«a
 3706        bbbˇ»
 3707    "});
 3708    cx.update_editor(|e, window, cx| {
 3709        e.manipulate_lines(window, cx, |lines| {
 3710            lines.drain(..);
 3711        })
 3712    });
 3713    cx.assert_editor_state(indoc! {"
 3714        ˇ
 3715    "});
 3716}
 3717
 3718#[gpui::test]
 3719async fn test_unique_lines_multi_selection(cx: &mut TestAppContext) {
 3720    init_test(cx, |_| {});
 3721
 3722    let mut cx = EditorTestContext::new(cx).await;
 3723
 3724    // Consider continuous selection as single selection
 3725    cx.set_state(indoc! {"
 3726        Aaa«aa
 3727        cˇ»c«c
 3728        bb
 3729        aaaˇ»aa
 3730    "});
 3731    cx.update_editor(|e, window, cx| {
 3732        e.unique_lines_case_sensitive(&UniqueLinesCaseSensitive, window, cx)
 3733    });
 3734    cx.assert_editor_state(indoc! {"
 3735        «Aaaaa
 3736        ccc
 3737        bb
 3738        aaaaaˇ»
 3739    "});
 3740
 3741    cx.set_state(indoc! {"
 3742        Aaa«aa
 3743        cˇ»c«c
 3744        bb
 3745        aaaˇ»aa
 3746    "});
 3747    cx.update_editor(|e, window, cx| {
 3748        e.unique_lines_case_insensitive(&UniqueLinesCaseInsensitive, window, cx)
 3749    });
 3750    cx.assert_editor_state(indoc! {"
 3751        «Aaaaa
 3752        ccc
 3753        bbˇ»
 3754    "});
 3755
 3756    // Consider non continuous selection as distinct dedup operations
 3757    cx.set_state(indoc! {"
 3758        «aaaaa
 3759        bb
 3760        aaaaa
 3761        aaaaaˇ»
 3762
 3763        aaa«aaˇ»
 3764    "});
 3765    cx.update_editor(|e, window, cx| {
 3766        e.unique_lines_case_sensitive(&UniqueLinesCaseSensitive, window, cx)
 3767    });
 3768    cx.assert_editor_state(indoc! {"
 3769        «aaaaa
 3770        bbˇ»
 3771
 3772        «aaaaaˇ»
 3773    "});
 3774}
 3775
 3776#[gpui::test]
 3777async fn test_unique_lines_single_selection(cx: &mut TestAppContext) {
 3778    init_test(cx, |_| {});
 3779
 3780    let mut cx = EditorTestContext::new(cx).await;
 3781
 3782    cx.set_state(indoc! {"
 3783        «Aaa
 3784        aAa
 3785        Aaaˇ»
 3786    "});
 3787    cx.update_editor(|e, window, cx| {
 3788        e.unique_lines_case_sensitive(&UniqueLinesCaseSensitive, window, cx)
 3789    });
 3790    cx.assert_editor_state(indoc! {"
 3791        «Aaa
 3792        aAaˇ»
 3793    "});
 3794
 3795    cx.set_state(indoc! {"
 3796        «Aaa
 3797        aAa
 3798        aaAˇ»
 3799    "});
 3800    cx.update_editor(|e, window, cx| {
 3801        e.unique_lines_case_insensitive(&UniqueLinesCaseInsensitive, window, cx)
 3802    });
 3803    cx.assert_editor_state(indoc! {"
 3804        «Aaaˇ»
 3805    "});
 3806}
 3807
 3808#[gpui::test]
 3809async fn test_manipulate_lines_with_multi_selection(cx: &mut TestAppContext) {
 3810    init_test(cx, |_| {});
 3811
 3812    let mut cx = EditorTestContext::new(cx).await;
 3813
 3814    // Manipulate with multiple selections on a single line
 3815    cx.set_state(indoc! {"
 3816        dd«dd
 3817        cˇ»c«c
 3818        bb
 3819        aaaˇ»aa
 3820    "});
 3821    cx.update_editor(|e, window, cx| {
 3822        e.sort_lines_case_sensitive(&SortLinesCaseSensitive, window, cx)
 3823    });
 3824    cx.assert_editor_state(indoc! {"
 3825        «aaaaa
 3826        bb
 3827        ccc
 3828        ddddˇ»
 3829    "});
 3830
 3831    // Manipulate with multiple disjoin selections
 3832    cx.set_state(indoc! {"
 3833 3834        4
 3835        3
 3836        2
 3837        1ˇ»
 3838
 3839        dd«dd
 3840        ccc
 3841        bb
 3842        aaaˇ»aa
 3843    "});
 3844    cx.update_editor(|e, window, cx| {
 3845        e.sort_lines_case_sensitive(&SortLinesCaseSensitive, window, cx)
 3846    });
 3847    cx.assert_editor_state(indoc! {"
 3848        «1
 3849        2
 3850        3
 3851        4
 3852        5ˇ»
 3853
 3854        «aaaaa
 3855        bb
 3856        ccc
 3857        ddddˇ»
 3858    "});
 3859
 3860    // Adding lines on each selection
 3861    cx.set_state(indoc! {"
 3862 3863        1ˇ»
 3864
 3865        bb«bb
 3866        aaaˇ»aa
 3867    "});
 3868    cx.update_editor(|e, window, cx| {
 3869        e.manipulate_lines(window, cx, |lines| lines.push("added line"))
 3870    });
 3871    cx.assert_editor_state(indoc! {"
 3872        «2
 3873        1
 3874        added lineˇ»
 3875
 3876        «bbbb
 3877        aaaaa
 3878        added lineˇ»
 3879    "});
 3880
 3881    // Removing lines on each selection
 3882    cx.set_state(indoc! {"
 3883 3884        1ˇ»
 3885
 3886        bb«bb
 3887        aaaˇ»aa
 3888    "});
 3889    cx.update_editor(|e, window, cx| {
 3890        e.manipulate_lines(window, cx, |lines| {
 3891            lines.pop();
 3892        })
 3893    });
 3894    cx.assert_editor_state(indoc! {"
 3895        «2ˇ»
 3896
 3897        «bbbbˇ»
 3898    "});
 3899}
 3900
 3901#[gpui::test]
 3902async fn test_toggle_case(cx: &mut TestAppContext) {
 3903    init_test(cx, |_| {});
 3904
 3905    let mut cx = EditorTestContext::new(cx).await;
 3906
 3907    // If all lower case -> upper case
 3908    cx.set_state(indoc! {"
 3909        «hello worldˇ»
 3910    "});
 3911    cx.update_editor(|e, window, cx| e.toggle_case(&ToggleCase, window, cx));
 3912    cx.assert_editor_state(indoc! {"
 3913        «HELLO WORLDˇ»
 3914    "});
 3915
 3916    // If all upper case -> lower case
 3917    cx.set_state(indoc! {"
 3918        «HELLO WORLDˇ»
 3919    "});
 3920    cx.update_editor(|e, window, cx| e.toggle_case(&ToggleCase, window, cx));
 3921    cx.assert_editor_state(indoc! {"
 3922        «hello worldˇ»
 3923    "});
 3924
 3925    // If any upper case characters are identified -> lower case
 3926    // This matches JetBrains IDEs
 3927    cx.set_state(indoc! {"
 3928        «hEllo worldˇ»
 3929    "});
 3930    cx.update_editor(|e, window, cx| e.toggle_case(&ToggleCase, window, cx));
 3931    cx.assert_editor_state(indoc! {"
 3932        «hello worldˇ»
 3933    "});
 3934}
 3935
 3936#[gpui::test]
 3937async fn test_manipulate_text(cx: &mut TestAppContext) {
 3938    init_test(cx, |_| {});
 3939
 3940    let mut cx = EditorTestContext::new(cx).await;
 3941
 3942    // Test convert_to_upper_case()
 3943    cx.set_state(indoc! {"
 3944        «hello worldˇ»
 3945    "});
 3946    cx.update_editor(|e, window, cx| e.convert_to_upper_case(&ConvertToUpperCase, window, cx));
 3947    cx.assert_editor_state(indoc! {"
 3948        «HELLO WORLDˇ»
 3949    "});
 3950
 3951    // Test convert_to_lower_case()
 3952    cx.set_state(indoc! {"
 3953        «HELLO WORLDˇ»
 3954    "});
 3955    cx.update_editor(|e, window, cx| e.convert_to_lower_case(&ConvertToLowerCase, window, cx));
 3956    cx.assert_editor_state(indoc! {"
 3957        «hello worldˇ»
 3958    "});
 3959
 3960    // Test multiple line, single selection case
 3961    cx.set_state(indoc! {"
 3962        «The quick brown
 3963        fox jumps over
 3964        the lazy dogˇ»
 3965    "});
 3966    cx.update_editor(|e, window, cx| e.convert_to_title_case(&ConvertToTitleCase, window, cx));
 3967    cx.assert_editor_state(indoc! {"
 3968        «The Quick Brown
 3969        Fox Jumps Over
 3970        The Lazy Dogˇ»
 3971    "});
 3972
 3973    // Test multiple line, single selection case
 3974    cx.set_state(indoc! {"
 3975        «The quick brown
 3976        fox jumps over
 3977        the lazy dogˇ»
 3978    "});
 3979    cx.update_editor(|e, window, cx| {
 3980        e.convert_to_upper_camel_case(&ConvertToUpperCamelCase, window, cx)
 3981    });
 3982    cx.assert_editor_state(indoc! {"
 3983        «TheQuickBrown
 3984        FoxJumpsOver
 3985        TheLazyDogˇ»
 3986    "});
 3987
 3988    // From here on out, test more complex cases of manipulate_text()
 3989
 3990    // Test no selection case - should affect words cursors are in
 3991    // Cursor at beginning, middle, and end of word
 3992    cx.set_state(indoc! {"
 3993        ˇhello big beauˇtiful worldˇ
 3994    "});
 3995    cx.update_editor(|e, window, cx| e.convert_to_upper_case(&ConvertToUpperCase, window, cx));
 3996    cx.assert_editor_state(indoc! {"
 3997        «HELLOˇ» big «BEAUTIFULˇ» «WORLDˇ»
 3998    "});
 3999
 4000    // Test multiple selections on a single line and across multiple lines
 4001    cx.set_state(indoc! {"
 4002        «Theˇ» quick «brown
 4003        foxˇ» jumps «overˇ»
 4004        the «lazyˇ» dog
 4005    "});
 4006    cx.update_editor(|e, window, cx| e.convert_to_upper_case(&ConvertToUpperCase, window, cx));
 4007    cx.assert_editor_state(indoc! {"
 4008        «THEˇ» quick «BROWN
 4009        FOXˇ» jumps «OVERˇ»
 4010        the «LAZYˇ» dog
 4011    "});
 4012
 4013    // Test case where text length grows
 4014    cx.set_state(indoc! {"
 4015        «tschüߡ»
 4016    "});
 4017    cx.update_editor(|e, window, cx| e.convert_to_upper_case(&ConvertToUpperCase, window, cx));
 4018    cx.assert_editor_state(indoc! {"
 4019        «TSCHÜSSˇ»
 4020    "});
 4021
 4022    // Test to make sure we don't crash when text shrinks
 4023    cx.set_state(indoc! {"
 4024        aaa_bbbˇ
 4025    "});
 4026    cx.update_editor(|e, window, cx| {
 4027        e.convert_to_lower_camel_case(&ConvertToLowerCamelCase, window, cx)
 4028    });
 4029    cx.assert_editor_state(indoc! {"
 4030        «aaaBbbˇ»
 4031    "});
 4032
 4033    // Test to make sure we all aware of the fact that each word can grow and shrink
 4034    // Final selections should be aware of this fact
 4035    cx.set_state(indoc! {"
 4036        aaa_bˇbb bbˇb_ccc ˇccc_ddd
 4037    "});
 4038    cx.update_editor(|e, window, cx| {
 4039        e.convert_to_lower_camel_case(&ConvertToLowerCamelCase, window, cx)
 4040    });
 4041    cx.assert_editor_state(indoc! {"
 4042        «aaaBbbˇ» «bbbCccˇ» «cccDddˇ»
 4043    "});
 4044
 4045    cx.set_state(indoc! {"
 4046        «hElLo, WoRld!ˇ»
 4047    "});
 4048    cx.update_editor(|e, window, cx| {
 4049        e.convert_to_opposite_case(&ConvertToOppositeCase, window, cx)
 4050    });
 4051    cx.assert_editor_state(indoc! {"
 4052        «HeLlO, wOrLD!ˇ»
 4053    "});
 4054}
 4055
 4056#[gpui::test]
 4057fn test_duplicate_line(cx: &mut TestAppContext) {
 4058    init_test(cx, |_| {});
 4059
 4060    let editor = cx.add_window(|window, cx| {
 4061        let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
 4062        build_editor(buffer, window, cx)
 4063    });
 4064    _ = editor.update(cx, |editor, window, cx| {
 4065        editor.change_selections(None, window, cx, |s| {
 4066            s.select_display_ranges([
 4067                DisplayPoint::new(DisplayRow(0), 0)..DisplayPoint::new(DisplayRow(0), 1),
 4068                DisplayPoint::new(DisplayRow(0), 2)..DisplayPoint::new(DisplayRow(0), 2),
 4069                DisplayPoint::new(DisplayRow(1), 0)..DisplayPoint::new(DisplayRow(1), 0),
 4070                DisplayPoint::new(DisplayRow(3), 0)..DisplayPoint::new(DisplayRow(3), 0),
 4071            ])
 4072        });
 4073        editor.duplicate_line_down(&DuplicateLineDown, window, cx);
 4074        assert_eq!(editor.display_text(cx), "abc\nabc\ndef\ndef\nghi\n\n");
 4075        assert_eq!(
 4076            editor.selections.display_ranges(cx),
 4077            vec![
 4078                DisplayPoint::new(DisplayRow(1), 0)..DisplayPoint::new(DisplayRow(1), 1),
 4079                DisplayPoint::new(DisplayRow(1), 2)..DisplayPoint::new(DisplayRow(1), 2),
 4080                DisplayPoint::new(DisplayRow(3), 0)..DisplayPoint::new(DisplayRow(3), 0),
 4081                DisplayPoint::new(DisplayRow(6), 0)..DisplayPoint::new(DisplayRow(6), 0),
 4082            ]
 4083        );
 4084    });
 4085
 4086    let editor = cx.add_window(|window, cx| {
 4087        let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
 4088        build_editor(buffer, window, cx)
 4089    });
 4090    _ = editor.update(cx, |editor, window, cx| {
 4091        editor.change_selections(None, window, cx, |s| {
 4092            s.select_display_ranges([
 4093                DisplayPoint::new(DisplayRow(0), 1)..DisplayPoint::new(DisplayRow(1), 1),
 4094                DisplayPoint::new(DisplayRow(1), 2)..DisplayPoint::new(DisplayRow(2), 1),
 4095            ])
 4096        });
 4097        editor.duplicate_line_down(&DuplicateLineDown, window, cx);
 4098        assert_eq!(editor.display_text(cx), "abc\ndef\nghi\nabc\ndef\nghi\n");
 4099        assert_eq!(
 4100            editor.selections.display_ranges(cx),
 4101            vec![
 4102                DisplayPoint::new(DisplayRow(3), 1)..DisplayPoint::new(DisplayRow(4), 1),
 4103                DisplayPoint::new(DisplayRow(4), 2)..DisplayPoint::new(DisplayRow(5), 1),
 4104            ]
 4105        );
 4106    });
 4107
 4108    // With `move_upwards` the selections stay in place, except for
 4109    // the lines inserted above them
 4110    let editor = cx.add_window(|window, cx| {
 4111        let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
 4112        build_editor(buffer, window, cx)
 4113    });
 4114    _ = editor.update(cx, |editor, window, cx| {
 4115        editor.change_selections(None, window, cx, |s| {
 4116            s.select_display_ranges([
 4117                DisplayPoint::new(DisplayRow(0), 0)..DisplayPoint::new(DisplayRow(0), 1),
 4118                DisplayPoint::new(DisplayRow(0), 2)..DisplayPoint::new(DisplayRow(0), 2),
 4119                DisplayPoint::new(DisplayRow(1), 0)..DisplayPoint::new(DisplayRow(1), 0),
 4120                DisplayPoint::new(DisplayRow(3), 0)..DisplayPoint::new(DisplayRow(3), 0),
 4121            ])
 4122        });
 4123        editor.duplicate_line_up(&DuplicateLineUp, window, cx);
 4124        assert_eq!(editor.display_text(cx), "abc\nabc\ndef\ndef\nghi\n\n");
 4125        assert_eq!(
 4126            editor.selections.display_ranges(cx),
 4127            vec![
 4128                DisplayPoint::new(DisplayRow(0), 0)..DisplayPoint::new(DisplayRow(0), 1),
 4129                DisplayPoint::new(DisplayRow(0), 2)..DisplayPoint::new(DisplayRow(0), 2),
 4130                DisplayPoint::new(DisplayRow(2), 0)..DisplayPoint::new(DisplayRow(2), 0),
 4131                DisplayPoint::new(DisplayRow(6), 0)..DisplayPoint::new(DisplayRow(6), 0),
 4132            ]
 4133        );
 4134    });
 4135
 4136    let editor = cx.add_window(|window, cx| {
 4137        let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
 4138        build_editor(buffer, window, cx)
 4139    });
 4140    _ = editor.update(cx, |editor, window, cx| {
 4141        editor.change_selections(None, window, cx, |s| {
 4142            s.select_display_ranges([
 4143                DisplayPoint::new(DisplayRow(0), 1)..DisplayPoint::new(DisplayRow(1), 1),
 4144                DisplayPoint::new(DisplayRow(1), 2)..DisplayPoint::new(DisplayRow(2), 1),
 4145            ])
 4146        });
 4147        editor.duplicate_line_up(&DuplicateLineUp, window, cx);
 4148        assert_eq!(editor.display_text(cx), "abc\ndef\nghi\nabc\ndef\nghi\n");
 4149        assert_eq!(
 4150            editor.selections.display_ranges(cx),
 4151            vec![
 4152                DisplayPoint::new(DisplayRow(0), 1)..DisplayPoint::new(DisplayRow(1), 1),
 4153                DisplayPoint::new(DisplayRow(1), 2)..DisplayPoint::new(DisplayRow(2), 1),
 4154            ]
 4155        );
 4156    });
 4157
 4158    let editor = cx.add_window(|window, cx| {
 4159        let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
 4160        build_editor(buffer, window, cx)
 4161    });
 4162    _ = editor.update(cx, |editor, window, cx| {
 4163        editor.change_selections(None, window, cx, |s| {
 4164            s.select_display_ranges([
 4165                DisplayPoint::new(DisplayRow(0), 1)..DisplayPoint::new(DisplayRow(1), 1),
 4166                DisplayPoint::new(DisplayRow(1), 2)..DisplayPoint::new(DisplayRow(2), 1),
 4167            ])
 4168        });
 4169        editor.duplicate_selection(&DuplicateSelection, window, cx);
 4170        assert_eq!(editor.display_text(cx), "abc\ndbc\ndef\ngf\nghi\n");
 4171        assert_eq!(
 4172            editor.selections.display_ranges(cx),
 4173            vec![
 4174                DisplayPoint::new(DisplayRow(0), 1)..DisplayPoint::new(DisplayRow(1), 1),
 4175                DisplayPoint::new(DisplayRow(2), 2)..DisplayPoint::new(DisplayRow(3), 1),
 4176            ]
 4177        );
 4178    });
 4179}
 4180
 4181#[gpui::test]
 4182fn test_move_line_up_down(cx: &mut TestAppContext) {
 4183    init_test(cx, |_| {});
 4184
 4185    let editor = cx.add_window(|window, cx| {
 4186        let buffer = MultiBuffer::build_simple(&sample_text(10, 5, 'a'), cx);
 4187        build_editor(buffer, window, cx)
 4188    });
 4189    _ = editor.update(cx, |editor, window, cx| {
 4190        editor.fold_creases(
 4191            vec![
 4192                Crease::simple(Point::new(0, 2)..Point::new(1, 2), FoldPlaceholder::test()),
 4193                Crease::simple(Point::new(2, 3)..Point::new(4, 1), FoldPlaceholder::test()),
 4194                Crease::simple(Point::new(7, 0)..Point::new(8, 4), FoldPlaceholder::test()),
 4195            ],
 4196            true,
 4197            window,
 4198            cx,
 4199        );
 4200        editor.change_selections(None, window, cx, |s| {
 4201            s.select_display_ranges([
 4202                DisplayPoint::new(DisplayRow(0), 1)..DisplayPoint::new(DisplayRow(0), 1),
 4203                DisplayPoint::new(DisplayRow(3), 1)..DisplayPoint::new(DisplayRow(3), 1),
 4204                DisplayPoint::new(DisplayRow(3), 2)..DisplayPoint::new(DisplayRow(4), 3),
 4205                DisplayPoint::new(DisplayRow(5), 0)..DisplayPoint::new(DisplayRow(5), 2),
 4206            ])
 4207        });
 4208        assert_eq!(
 4209            editor.display_text(cx),
 4210            "aa⋯bbb\nccc⋯eeee\nfffff\nggggg\n⋯i\njjjjj"
 4211        );
 4212
 4213        editor.move_line_up(&MoveLineUp, window, cx);
 4214        assert_eq!(
 4215            editor.display_text(cx),
 4216            "aa⋯bbb\nccc⋯eeee\nggggg\n⋯i\njjjjj\nfffff"
 4217        );
 4218        assert_eq!(
 4219            editor.selections.display_ranges(cx),
 4220            vec![
 4221                DisplayPoint::new(DisplayRow(0), 1)..DisplayPoint::new(DisplayRow(0), 1),
 4222                DisplayPoint::new(DisplayRow(2), 1)..DisplayPoint::new(DisplayRow(2), 1),
 4223                DisplayPoint::new(DisplayRow(2), 2)..DisplayPoint::new(DisplayRow(3), 3),
 4224                DisplayPoint::new(DisplayRow(4), 0)..DisplayPoint::new(DisplayRow(4), 2)
 4225            ]
 4226        );
 4227    });
 4228
 4229    _ = editor.update(cx, |editor, window, cx| {
 4230        editor.move_line_down(&MoveLineDown, window, cx);
 4231        assert_eq!(
 4232            editor.display_text(cx),
 4233            "ccc⋯eeee\naa⋯bbb\nfffff\nggggg\n⋯i\njjjjj"
 4234        );
 4235        assert_eq!(
 4236            editor.selections.display_ranges(cx),
 4237            vec![
 4238                DisplayPoint::new(DisplayRow(1), 1)..DisplayPoint::new(DisplayRow(1), 1),
 4239                DisplayPoint::new(DisplayRow(3), 1)..DisplayPoint::new(DisplayRow(3), 1),
 4240                DisplayPoint::new(DisplayRow(3), 2)..DisplayPoint::new(DisplayRow(4), 3),
 4241                DisplayPoint::new(DisplayRow(5), 0)..DisplayPoint::new(DisplayRow(5), 2)
 4242            ]
 4243        );
 4244    });
 4245
 4246    _ = editor.update(cx, |editor, window, cx| {
 4247        editor.move_line_down(&MoveLineDown, window, cx);
 4248        assert_eq!(
 4249            editor.display_text(cx),
 4250            "ccc⋯eeee\nfffff\naa⋯bbb\nggggg\n⋯i\njjjjj"
 4251        );
 4252        assert_eq!(
 4253            editor.selections.display_ranges(cx),
 4254            vec![
 4255                DisplayPoint::new(DisplayRow(2), 1)..DisplayPoint::new(DisplayRow(2), 1),
 4256                DisplayPoint::new(DisplayRow(3), 1)..DisplayPoint::new(DisplayRow(3), 1),
 4257                DisplayPoint::new(DisplayRow(3), 2)..DisplayPoint::new(DisplayRow(4), 3),
 4258                DisplayPoint::new(DisplayRow(5), 0)..DisplayPoint::new(DisplayRow(5), 2)
 4259            ]
 4260        );
 4261    });
 4262
 4263    _ = editor.update(cx, |editor, window, cx| {
 4264        editor.move_line_up(&MoveLineUp, window, cx);
 4265        assert_eq!(
 4266            editor.display_text(cx),
 4267            "ccc⋯eeee\naa⋯bbb\nggggg\n⋯i\njjjjj\nfffff"
 4268        );
 4269        assert_eq!(
 4270            editor.selections.display_ranges(cx),
 4271            vec![
 4272                DisplayPoint::new(DisplayRow(1), 1)..DisplayPoint::new(DisplayRow(1), 1),
 4273                DisplayPoint::new(DisplayRow(2), 1)..DisplayPoint::new(DisplayRow(2), 1),
 4274                DisplayPoint::new(DisplayRow(2), 2)..DisplayPoint::new(DisplayRow(3), 3),
 4275                DisplayPoint::new(DisplayRow(4), 0)..DisplayPoint::new(DisplayRow(4), 2)
 4276            ]
 4277        );
 4278    });
 4279}
 4280
 4281#[gpui::test]
 4282fn test_move_line_up_down_with_blocks(cx: &mut TestAppContext) {
 4283    init_test(cx, |_| {});
 4284
 4285    let editor = cx.add_window(|window, cx| {
 4286        let buffer = MultiBuffer::build_simple(&sample_text(10, 5, 'a'), cx);
 4287        build_editor(buffer, window, cx)
 4288    });
 4289    _ = editor.update(cx, |editor, window, cx| {
 4290        let snapshot = editor.buffer.read(cx).snapshot(cx);
 4291        editor.insert_blocks(
 4292            [BlockProperties {
 4293                style: BlockStyle::Fixed,
 4294                placement: BlockPlacement::Below(snapshot.anchor_after(Point::new(2, 0))),
 4295                height: Some(1),
 4296                render: Arc::new(|_| div().into_any()),
 4297                priority: 0,
 4298            }],
 4299            Some(Autoscroll::fit()),
 4300            cx,
 4301        );
 4302        editor.change_selections(None, window, cx, |s| {
 4303            s.select_ranges([Point::new(2, 0)..Point::new(2, 0)])
 4304        });
 4305        editor.move_line_down(&MoveLineDown, window, cx);
 4306    });
 4307}
 4308
 4309#[gpui::test]
 4310async fn test_selections_and_replace_blocks(cx: &mut TestAppContext) {
 4311    init_test(cx, |_| {});
 4312
 4313    let mut cx = EditorTestContext::new(cx).await;
 4314    cx.set_state(
 4315        &"
 4316            ˇzero
 4317            one
 4318            two
 4319            three
 4320            four
 4321            five
 4322        "
 4323        .unindent(),
 4324    );
 4325
 4326    // Create a four-line block that replaces three lines of text.
 4327    cx.update_editor(|editor, window, cx| {
 4328        let snapshot = editor.snapshot(window, cx);
 4329        let snapshot = &snapshot.buffer_snapshot;
 4330        let placement = BlockPlacement::Replace(
 4331            snapshot.anchor_after(Point::new(1, 0))..=snapshot.anchor_after(Point::new(3, 0)),
 4332        );
 4333        editor.insert_blocks(
 4334            [BlockProperties {
 4335                placement,
 4336                height: Some(4),
 4337                style: BlockStyle::Sticky,
 4338                render: Arc::new(|_| gpui::div().into_any_element()),
 4339                priority: 0,
 4340            }],
 4341            None,
 4342            cx,
 4343        );
 4344    });
 4345
 4346    // Move down so that the cursor touches the block.
 4347    cx.update_editor(|editor, window, cx| {
 4348        editor.move_down(&Default::default(), window, cx);
 4349    });
 4350    cx.assert_editor_state(
 4351        &"
 4352            zero
 4353            «one
 4354            two
 4355            threeˇ»
 4356            four
 4357            five
 4358        "
 4359        .unindent(),
 4360    );
 4361
 4362    // Move down past the block.
 4363    cx.update_editor(|editor, window, cx| {
 4364        editor.move_down(&Default::default(), window, cx);
 4365    });
 4366    cx.assert_editor_state(
 4367        &"
 4368            zero
 4369            one
 4370            two
 4371            three
 4372            ˇfour
 4373            five
 4374        "
 4375        .unindent(),
 4376    );
 4377}
 4378
 4379#[gpui::test]
 4380fn test_transpose(cx: &mut TestAppContext) {
 4381    init_test(cx, |_| {});
 4382
 4383    _ = cx.add_window(|window, cx| {
 4384        let mut editor = build_editor(MultiBuffer::build_simple("abc", cx), window, cx);
 4385        editor.set_style(EditorStyle::default(), window, cx);
 4386        editor.change_selections(None, window, cx, |s| s.select_ranges([1..1]));
 4387        editor.transpose(&Default::default(), window, cx);
 4388        assert_eq!(editor.text(cx), "bac");
 4389        assert_eq!(editor.selections.ranges(cx), [2..2]);
 4390
 4391        editor.transpose(&Default::default(), window, cx);
 4392        assert_eq!(editor.text(cx), "bca");
 4393        assert_eq!(editor.selections.ranges(cx), [3..3]);
 4394
 4395        editor.transpose(&Default::default(), window, cx);
 4396        assert_eq!(editor.text(cx), "bac");
 4397        assert_eq!(editor.selections.ranges(cx), [3..3]);
 4398
 4399        editor
 4400    });
 4401
 4402    _ = cx.add_window(|window, cx| {
 4403        let mut editor = build_editor(MultiBuffer::build_simple("abc\nde", cx), window, cx);
 4404        editor.set_style(EditorStyle::default(), window, cx);
 4405        editor.change_selections(None, window, cx, |s| s.select_ranges([3..3]));
 4406        editor.transpose(&Default::default(), window, cx);
 4407        assert_eq!(editor.text(cx), "acb\nde");
 4408        assert_eq!(editor.selections.ranges(cx), [3..3]);
 4409
 4410        editor.change_selections(None, window, cx, |s| s.select_ranges([4..4]));
 4411        editor.transpose(&Default::default(), window, cx);
 4412        assert_eq!(editor.text(cx), "acbd\ne");
 4413        assert_eq!(editor.selections.ranges(cx), [5..5]);
 4414
 4415        editor.transpose(&Default::default(), window, cx);
 4416        assert_eq!(editor.text(cx), "acbde\n");
 4417        assert_eq!(editor.selections.ranges(cx), [6..6]);
 4418
 4419        editor.transpose(&Default::default(), window, cx);
 4420        assert_eq!(editor.text(cx), "acbd\ne");
 4421        assert_eq!(editor.selections.ranges(cx), [6..6]);
 4422
 4423        editor
 4424    });
 4425
 4426    _ = cx.add_window(|window, cx| {
 4427        let mut editor = build_editor(MultiBuffer::build_simple("abc\nde", cx), window, cx);
 4428        editor.set_style(EditorStyle::default(), window, cx);
 4429        editor.change_selections(None, window, cx, |s| s.select_ranges([1..1, 2..2, 4..4]));
 4430        editor.transpose(&Default::default(), window, cx);
 4431        assert_eq!(editor.text(cx), "bacd\ne");
 4432        assert_eq!(editor.selections.ranges(cx), [2..2, 3..3, 5..5]);
 4433
 4434        editor.transpose(&Default::default(), window, cx);
 4435        assert_eq!(editor.text(cx), "bcade\n");
 4436        assert_eq!(editor.selections.ranges(cx), [3..3, 4..4, 6..6]);
 4437
 4438        editor.transpose(&Default::default(), window, cx);
 4439        assert_eq!(editor.text(cx), "bcda\ne");
 4440        assert_eq!(editor.selections.ranges(cx), [4..4, 6..6]);
 4441
 4442        editor.transpose(&Default::default(), window, cx);
 4443        assert_eq!(editor.text(cx), "bcade\n");
 4444        assert_eq!(editor.selections.ranges(cx), [4..4, 6..6]);
 4445
 4446        editor.transpose(&Default::default(), window, cx);
 4447        assert_eq!(editor.text(cx), "bcaed\n");
 4448        assert_eq!(editor.selections.ranges(cx), [5..5, 6..6]);
 4449
 4450        editor
 4451    });
 4452
 4453    _ = cx.add_window(|window, cx| {
 4454        let mut editor = build_editor(MultiBuffer::build_simple("🍐🏀✋", cx), window, cx);
 4455        editor.set_style(EditorStyle::default(), window, cx);
 4456        editor.change_selections(None, window, cx, |s| s.select_ranges([4..4]));
 4457        editor.transpose(&Default::default(), window, cx);
 4458        assert_eq!(editor.text(cx), "🏀🍐✋");
 4459        assert_eq!(editor.selections.ranges(cx), [8..8]);
 4460
 4461        editor.transpose(&Default::default(), window, cx);
 4462        assert_eq!(editor.text(cx), "🏀✋🍐");
 4463        assert_eq!(editor.selections.ranges(cx), [11..11]);
 4464
 4465        editor.transpose(&Default::default(), window, cx);
 4466        assert_eq!(editor.text(cx), "🏀🍐✋");
 4467        assert_eq!(editor.selections.ranges(cx), [11..11]);
 4468
 4469        editor
 4470    });
 4471}
 4472
 4473#[gpui::test]
 4474async fn test_rewrap(cx: &mut TestAppContext) {
 4475    init_test(cx, |settings| {
 4476        settings.languages.extend([
 4477            (
 4478                "Markdown".into(),
 4479                LanguageSettingsContent {
 4480                    allow_rewrap: Some(language_settings::RewrapBehavior::Anywhere),
 4481                    ..Default::default()
 4482                },
 4483            ),
 4484            (
 4485                "Plain Text".into(),
 4486                LanguageSettingsContent {
 4487                    allow_rewrap: Some(language_settings::RewrapBehavior::Anywhere),
 4488                    ..Default::default()
 4489                },
 4490            ),
 4491        ])
 4492    });
 4493
 4494    let mut cx = EditorTestContext::new(cx).await;
 4495
 4496    let language_with_c_comments = Arc::new(Language::new(
 4497        LanguageConfig {
 4498            line_comments: vec!["// ".into()],
 4499            ..LanguageConfig::default()
 4500        },
 4501        None,
 4502    ));
 4503    let language_with_pound_comments = Arc::new(Language::new(
 4504        LanguageConfig {
 4505            line_comments: vec!["# ".into()],
 4506            ..LanguageConfig::default()
 4507        },
 4508        None,
 4509    ));
 4510    let markdown_language = Arc::new(Language::new(
 4511        LanguageConfig {
 4512            name: "Markdown".into(),
 4513            ..LanguageConfig::default()
 4514        },
 4515        None,
 4516    ));
 4517    let language_with_doc_comments = Arc::new(Language::new(
 4518        LanguageConfig {
 4519            line_comments: vec!["// ".into(), "/// ".into()],
 4520            ..LanguageConfig::default()
 4521        },
 4522        Some(tree_sitter_rust::LANGUAGE.into()),
 4523    ));
 4524
 4525    let plaintext_language = Arc::new(Language::new(
 4526        LanguageConfig {
 4527            name: "Plain Text".into(),
 4528            ..LanguageConfig::default()
 4529        },
 4530        None,
 4531    ));
 4532
 4533    assert_rewrap(
 4534        indoc! {"
 4535            // ˇLorem ipsum dolor sit amet, consectetur adipiscing elit. Vivamus mollis elit purus, a ornare lacus gravida vitae. Proin consectetur felis vel purus auctor, eu lacinia sapien scelerisque. Vivamus sit amet neque et quam tincidunt hendrerit. Praesent semper egestas tellus id dignissim. Pellentesque odio lectus, iaculis ac volutpat et, blandit quis urna. Sed vestibulum nisi sit amet nisl venenatis tempus. Donec molestie blandit quam, et porta nunc laoreet in. Integer sit amet scelerisque nisi. Lorem ipsum dolor sit amet, consectetur adipiscing elit. Cras egestas porta metus, eu viverra ipsum efficitur quis. Donec luctus eros turpis, id vulputate turpis porttitor id. Aliquam id accumsan eros.
 4536        "},
 4537        indoc! {"
 4538            // ˇLorem ipsum dolor sit amet, consectetur adipiscing elit. Vivamus mollis elit
 4539            // purus, a ornare lacus gravida vitae. Proin consectetur felis vel purus
 4540            // auctor, eu lacinia sapien scelerisque. Vivamus sit amet neque et quam
 4541            // tincidunt hendrerit. Praesent semper egestas tellus id dignissim.
 4542            // Pellentesque odio lectus, iaculis ac volutpat et, blandit quis urna. Sed
 4543            // vestibulum nisi sit amet nisl venenatis tempus. Donec molestie blandit quam,
 4544            // et porta nunc laoreet in. Integer sit amet scelerisque nisi. Lorem ipsum
 4545            // dolor sit amet, consectetur adipiscing elit. Cras egestas porta metus, eu
 4546            // viverra ipsum efficitur quis. Donec luctus eros turpis, id vulputate turpis
 4547            // porttitor id. Aliquam id accumsan eros.
 4548        "},
 4549        language_with_c_comments.clone(),
 4550        &mut cx,
 4551    );
 4552
 4553    // Test that rewrapping works inside of a selection
 4554    assert_rewrap(
 4555        indoc! {"
 4556            «// Lorem ipsum dolor sit amet, consectetur adipiscing elit. Vivamus mollis elit purus, a ornare lacus gravida vitae. Proin consectetur felis vel purus auctor, eu lacinia sapien scelerisque. Vivamus sit amet neque et quam tincidunt hendrerit. Praesent semper egestas tellus id dignissim. Pellentesque odio lectus, iaculis ac volutpat et, blandit quis urna. Sed vestibulum nisi sit amet nisl venenatis tempus. Donec molestie blandit quam, et porta nunc laoreet in. Integer sit amet scelerisque nisi. Lorem ipsum dolor sit amet, consectetur adipiscing elit. Cras egestas porta metus, eu viverra ipsum efficitur quis. Donec luctus eros turpis, id vulputate turpis porttitor id. Aliquam id accumsan eros.ˇ»
 4557        "},
 4558        indoc! {"
 4559            «// Lorem ipsum dolor sit amet, consectetur adipiscing elit. Vivamus mollis elit
 4560            // purus, a ornare lacus gravida vitae. Proin consectetur felis vel purus
 4561            // auctor, eu lacinia sapien scelerisque. Vivamus sit amet neque et quam
 4562            // tincidunt hendrerit. Praesent semper egestas tellus id dignissim.
 4563            // Pellentesque odio lectus, iaculis ac volutpat et, blandit quis urna. Sed
 4564            // vestibulum nisi sit amet nisl venenatis tempus. Donec molestie blandit quam,
 4565            // et porta nunc laoreet in. Integer sit amet scelerisque nisi. Lorem ipsum
 4566            // dolor sit amet, consectetur adipiscing elit. Cras egestas porta metus, eu
 4567            // viverra ipsum efficitur quis. Donec luctus eros turpis, id vulputate turpis
 4568            // porttitor id. Aliquam id accumsan eros.ˇ»
 4569        "},
 4570        language_with_c_comments.clone(),
 4571        &mut cx,
 4572    );
 4573
 4574    // Test that cursors that expand to the same region are collapsed.
 4575    assert_rewrap(
 4576        indoc! {"
 4577            // ˇLorem ipsum dolor sit amet, consectetur adipiscing elit.
 4578            // ˇVivamus mollis elit purus, a ornare lacus gravida vitae. Proin consectetur felis vel purus auctor, eu lacinia sapien scelerisque.
 4579            // ˇVivamus sit amet neque et quam tincidunt hendrerit. Praesent semper egestas tellus id dignissim. Pellentesque odio lectus, iaculis ac volutpat et,
 4580            // ˇblandit quis urna. Sed vestibulum nisi sit amet nisl venenatis tempus. Donec molestie blandit quam, et porta nunc laoreet in. Integer sit amet scelerisque nisi. Lorem ipsum dolor sit amet, consectetur adipiscing elit. Cras egestas porta metus, eu viverra ipsum efficitur quis. Donec luctus eros turpis, id vulputate turpis porttitor id. Aliquam id accumsan eros.
 4581        "},
 4582        indoc! {"
 4583            // ˇLorem ipsum dolor sit amet, consectetur adipiscing elit. ˇVivamus mollis elit
 4584            // purus, a ornare lacus gravida vitae. Proin consectetur felis vel purus
 4585            // auctor, eu lacinia sapien scelerisque. ˇVivamus sit amet neque et quam
 4586            // tincidunt hendrerit. Praesent semper egestas tellus id dignissim.
 4587            // Pellentesque odio lectus, iaculis ac volutpat et, ˇblandit quis urna. Sed
 4588            // vestibulum nisi sit amet nisl venenatis tempus. Donec molestie blandit quam,
 4589            // et porta nunc laoreet in. Integer sit amet scelerisque nisi. Lorem ipsum
 4590            // dolor sit amet, consectetur adipiscing elit. Cras egestas porta metus, eu
 4591            // viverra ipsum efficitur quis. Donec luctus eros turpis, id vulputate turpis
 4592            // porttitor id. Aliquam id accumsan eros.
 4593        "},
 4594        language_with_c_comments.clone(),
 4595        &mut cx,
 4596    );
 4597
 4598    // Test that non-contiguous selections are treated separately.
 4599    assert_rewrap(
 4600        indoc! {"
 4601            // ˇLorem ipsum dolor sit amet, consectetur adipiscing elit.
 4602            // ˇVivamus mollis elit purus, a ornare lacus gravida vitae. Proin consectetur felis vel purus auctor, eu lacinia sapien scelerisque.
 4603            //
 4604            // ˇVivamus sit amet neque et quam tincidunt hendrerit. Praesent semper egestas tellus id dignissim. Pellentesque odio lectus, iaculis ac volutpat et,
 4605            // ˇblandit quis urna. Sed vestibulum nisi sit amet nisl venenatis tempus. Donec molestie blandit quam, et porta nunc laoreet in. Integer sit amet scelerisque nisi. Lorem ipsum dolor sit amet, consectetur adipiscing elit. Cras egestas porta metus, eu viverra ipsum efficitur quis. Donec luctus eros turpis, id vulputate turpis porttitor id. Aliquam id accumsan eros.
 4606        "},
 4607        indoc! {"
 4608            // ˇLorem ipsum dolor sit amet, consectetur adipiscing elit. ˇVivamus mollis elit
 4609            // purus, a ornare lacus gravida vitae. Proin consectetur felis vel purus
 4610            // auctor, eu lacinia sapien scelerisque.
 4611            //
 4612            // ˇVivamus sit amet neque et quam tincidunt hendrerit. Praesent semper egestas
 4613            // tellus id dignissim. Pellentesque odio lectus, iaculis ac volutpat et,
 4614            // ˇblandit quis urna. Sed vestibulum nisi sit amet nisl venenatis tempus. Donec
 4615            // molestie blandit quam, et porta nunc laoreet in. Integer sit amet scelerisque
 4616            // nisi. Lorem ipsum dolor sit amet, consectetur adipiscing elit. Cras egestas
 4617            // porta metus, eu viverra ipsum efficitur quis. Donec luctus eros turpis, id
 4618            // vulputate turpis porttitor id. Aliquam id accumsan eros.
 4619        "},
 4620        language_with_c_comments.clone(),
 4621        &mut cx,
 4622    );
 4623
 4624    // Test that different comment prefixes are supported.
 4625    assert_rewrap(
 4626        indoc! {"
 4627            # ˇLorem ipsum dolor sit amet, consectetur adipiscing elit. Vivamus mollis elit purus, a ornare lacus gravida vitae. Proin consectetur felis vel purus auctor, eu lacinia sapien scelerisque. Vivamus sit amet neque et quam tincidunt hendrerit. Praesent semper egestas tellus id dignissim. Pellentesque odio lectus, iaculis ac volutpat et, blandit quis urna. Sed vestibulum nisi sit amet nisl venenatis tempus. Donec molestie blandit quam, et porta nunc laoreet in. Integer sit amet scelerisque nisi. Lorem ipsum dolor sit amet, consectetur adipiscing elit. Cras egestas porta metus, eu viverra ipsum efficitur quis. Donec luctus eros turpis, id vulputate turpis porttitor id. Aliquam id accumsan eros.
 4628        "},
 4629        indoc! {"
 4630            # ˇLorem ipsum dolor sit amet, consectetur adipiscing elit. Vivamus mollis elit
 4631            # purus, a ornare lacus gravida vitae. Proin consectetur felis vel purus auctor,
 4632            # eu lacinia sapien scelerisque. Vivamus sit amet neque et quam tincidunt
 4633            # hendrerit. Praesent semper egestas tellus id dignissim. Pellentesque odio
 4634            # lectus, iaculis ac volutpat et, blandit quis urna. Sed vestibulum nisi sit
 4635            # amet nisl venenatis tempus. Donec molestie blandit quam, et porta nunc laoreet
 4636            # in. Integer sit amet scelerisque nisi. Lorem ipsum dolor sit amet, consectetur
 4637            # adipiscing elit. Cras egestas porta metus, eu viverra ipsum efficitur quis.
 4638            # Donec luctus eros turpis, id vulputate turpis porttitor id. Aliquam id
 4639            # accumsan eros.
 4640        "},
 4641        language_with_pound_comments.clone(),
 4642        &mut cx,
 4643    );
 4644
 4645    // Test that rewrapping is ignored outside of comments in most languages.
 4646    assert_rewrap(
 4647        indoc! {"
 4648            /// Adds two numbers.
 4649            /// Lorem ipsum dolor sit amet, consectetur adipiscing elit. Vivamus mollis elit purus, a ornare lacus gravida vitae.ˇ
 4650            fn add(a: u32, b: u32) -> u32 {
 4651                a + b + a + b + a + b + a + b + a + b + a + b + a + b + a + b + a + b + a + b + a + b + a + b + a + b + a + b + a + b + a + bˇ
 4652            }
 4653        "},
 4654        indoc! {"
 4655            /// Adds two numbers. Lorem ipsum dolor sit amet, consectetur adipiscing elit.
 4656            /// Vivamus mollis elit purus, a ornare lacus gravida vitae.ˇ
 4657            fn add(a: u32, b: u32) -> u32 {
 4658                a + b + a + b + a + b + a + b + a + b + a + b + a + b + a + b + a + b + a + b + a + b + a + b + a + b + a + b + a + b + a + bˇ
 4659            }
 4660        "},
 4661        language_with_doc_comments.clone(),
 4662        &mut cx,
 4663    );
 4664
 4665    // Test that rewrapping works in Markdown and Plain Text languages.
 4666    assert_rewrap(
 4667        indoc! {"
 4668            # Hello
 4669
 4670            Lorem ipsum dolor sit amet, ˇconsectetur adipiscing elit. Vivamus mollis elit purus, a ornare lacus gravida vitae. Proin consectetur felis vel purus auctor, eu lacinia sapien scelerisque. Vivamus sit amet neque et quam tincidunt hendrerit. Praesent semper egestas tellus id dignissim. Pellentesque odio lectus, iaculis ac volutpat et, blandit quis urna. Sed vestibulum nisi sit amet nisl venenatis tempus. Donec molestie blandit quam, et porta nunc laoreet in. Integer sit amet scelerisque nisi.
 4671        "},
 4672        indoc! {"
 4673            # Hello
 4674
 4675            Lorem ipsum dolor sit amet, ˇconsectetur adipiscing elit. Vivamus mollis elit
 4676            purus, a ornare lacus gravida vitae. Proin consectetur felis vel purus auctor,
 4677            eu lacinia sapien scelerisque. Vivamus sit amet neque et quam tincidunt
 4678            hendrerit. Praesent semper egestas tellus id dignissim. Pellentesque odio
 4679            lectus, iaculis ac volutpat et, blandit quis urna. Sed vestibulum nisi sit amet
 4680            nisl venenatis tempus. Donec molestie blandit quam, et porta nunc laoreet in.
 4681            Integer sit amet scelerisque nisi.
 4682        "},
 4683        markdown_language,
 4684        &mut cx,
 4685    );
 4686
 4687    assert_rewrap(
 4688        indoc! {"
 4689            Lorem ipsum dolor sit amet, ˇconsectetur adipiscing elit. Vivamus mollis elit purus, a ornare lacus gravida vitae. Proin consectetur felis vel purus auctor, eu lacinia sapien scelerisque. Vivamus sit amet neque et quam tincidunt hendrerit. Praesent semper egestas tellus id dignissim. Pellentesque odio lectus, iaculis ac volutpat et, blandit quis urna. Sed vestibulum nisi sit amet nisl venenatis tempus. Donec molestie blandit quam, et porta nunc laoreet in. Integer sit amet scelerisque nisi.
 4690        "},
 4691        indoc! {"
 4692            Lorem ipsum dolor sit amet, ˇconsectetur adipiscing elit. Vivamus mollis elit
 4693            purus, a ornare lacus gravida vitae. Proin consectetur felis vel purus auctor,
 4694            eu lacinia sapien scelerisque. Vivamus sit amet neque et quam tincidunt
 4695            hendrerit. Praesent semper egestas tellus id dignissim. Pellentesque odio
 4696            lectus, iaculis ac volutpat et, blandit quis urna. Sed vestibulum nisi sit amet
 4697            nisl venenatis tempus. Donec molestie blandit quam, et porta nunc laoreet in.
 4698            Integer sit amet scelerisque nisi.
 4699        "},
 4700        plaintext_language,
 4701        &mut cx,
 4702    );
 4703
 4704    // Test rewrapping unaligned comments in a selection.
 4705    assert_rewrap(
 4706        indoc! {"
 4707            fn foo() {
 4708                if true {
 4709            «        // Lorem ipsum dolor sit amet, consectetur adipiscing elit. Vivamus mollis elit purus, a ornare lacus gravida vitae.
 4710            // Praesent semper egestas tellus id dignissim.ˇ»
 4711                    do_something();
 4712                } else {
 4713                    //
 4714                }
 4715            }
 4716        "},
 4717        indoc! {"
 4718            fn foo() {
 4719                if true {
 4720            «        // Lorem ipsum dolor sit amet, consectetur adipiscing elit. Vivamus
 4721                    // mollis elit purus, a ornare lacus gravida vitae. Praesent semper
 4722                    // egestas tellus id dignissim.ˇ»
 4723                    do_something();
 4724                } else {
 4725                    //
 4726                }
 4727            }
 4728        "},
 4729        language_with_doc_comments.clone(),
 4730        &mut cx,
 4731    );
 4732
 4733    assert_rewrap(
 4734        indoc! {"
 4735            fn foo() {
 4736                if true {
 4737            «ˇ        // Lorem ipsum dolor sit amet, consectetur adipiscing elit. Vivamus mollis elit purus, a ornare lacus gravida vitae.
 4738            // Praesent semper egestas tellus id dignissim.»
 4739                    do_something();
 4740                } else {
 4741                    //
 4742                }
 4743
 4744            }
 4745        "},
 4746        indoc! {"
 4747            fn foo() {
 4748                if true {
 4749            «ˇ        // Lorem ipsum dolor sit amet, consectetur adipiscing elit. Vivamus
 4750                    // mollis elit purus, a ornare lacus gravida vitae. Praesent semper
 4751                    // egestas tellus id dignissim.»
 4752                    do_something();
 4753                } else {
 4754                    //
 4755                }
 4756
 4757            }
 4758        "},
 4759        language_with_doc_comments.clone(),
 4760        &mut cx,
 4761    );
 4762
 4763    #[track_caller]
 4764    fn assert_rewrap(
 4765        unwrapped_text: &str,
 4766        wrapped_text: &str,
 4767        language: Arc<Language>,
 4768        cx: &mut EditorTestContext,
 4769    ) {
 4770        cx.update_buffer(|buffer, cx| buffer.set_language(Some(language), cx));
 4771        cx.set_state(unwrapped_text);
 4772        cx.update_editor(|e, window, cx| e.rewrap(&Rewrap, window, cx));
 4773        cx.assert_editor_state(wrapped_text);
 4774    }
 4775}
 4776
 4777#[gpui::test]
 4778async fn test_hard_wrap(cx: &mut TestAppContext) {
 4779    init_test(cx, |_| {});
 4780    let mut cx = EditorTestContext::new(cx).await;
 4781
 4782    cx.update_buffer(|buffer, cx| buffer.set_language(Some(git_commit_lang()), cx));
 4783    cx.update_editor(|editor, _, cx| {
 4784        editor.set_hard_wrap(Some(14), cx);
 4785    });
 4786
 4787    cx.set_state(indoc!(
 4788        "
 4789        one two three ˇ
 4790        "
 4791    ));
 4792    cx.simulate_input("four");
 4793    cx.run_until_parked();
 4794
 4795    cx.assert_editor_state(indoc!(
 4796        "
 4797        one two three
 4798        fourˇ
 4799        "
 4800    ));
 4801
 4802    cx.update_editor(|editor, window, cx| {
 4803        editor.newline(&Default::default(), window, cx);
 4804    });
 4805    cx.run_until_parked();
 4806    cx.assert_editor_state(indoc!(
 4807        "
 4808        one two three
 4809        four
 4810        ˇ
 4811        "
 4812    ));
 4813
 4814    cx.simulate_input("five");
 4815    cx.run_until_parked();
 4816    cx.assert_editor_state(indoc!(
 4817        "
 4818        one two three
 4819        four
 4820        fiveˇ
 4821        "
 4822    ));
 4823
 4824    cx.update_editor(|editor, window, cx| {
 4825        editor.newline(&Default::default(), window, cx);
 4826    });
 4827    cx.run_until_parked();
 4828    cx.simulate_input("# ");
 4829    cx.run_until_parked();
 4830    cx.assert_editor_state(indoc!(
 4831        "
 4832        one two three
 4833        four
 4834        five
 4835        # ˇ
 4836        "
 4837    ));
 4838
 4839    cx.update_editor(|editor, window, cx| {
 4840        editor.newline(&Default::default(), window, cx);
 4841    });
 4842    cx.run_until_parked();
 4843    cx.assert_editor_state(indoc!(
 4844        "
 4845        one two three
 4846        four
 4847        five
 4848        #\x20
 4849 4850        "
 4851    ));
 4852
 4853    cx.simulate_input(" 6");
 4854    cx.run_until_parked();
 4855    cx.assert_editor_state(indoc!(
 4856        "
 4857        one two three
 4858        four
 4859        five
 4860        #
 4861        # 6ˇ
 4862        "
 4863    ));
 4864}
 4865
 4866#[gpui::test]
 4867async fn test_clipboard(cx: &mut TestAppContext) {
 4868    init_test(cx, |_| {});
 4869
 4870    let mut cx = EditorTestContext::new(cx).await;
 4871
 4872    cx.set_state("«one✅ ˇ»two «three ˇ»four «five ˇ»six ");
 4873    cx.update_editor(|e, window, cx| e.cut(&Cut, window, cx));
 4874    cx.assert_editor_state("ˇtwo ˇfour ˇsix ");
 4875
 4876    // Paste with three cursors. Each cursor pastes one slice of the clipboard text.
 4877    cx.set_state("two ˇfour ˇsix ˇ");
 4878    cx.update_editor(|e, window, cx| e.paste(&Paste, window, cx));
 4879    cx.assert_editor_state("two one✅ ˇfour three ˇsix five ˇ");
 4880
 4881    // Paste again but with only two cursors. Since the number of cursors doesn't
 4882    // match the number of slices in the clipboard, the entire clipboard text
 4883    // is pasted at each cursor.
 4884    cx.set_state("ˇtwo one✅ four three six five ˇ");
 4885    cx.update_editor(|e, window, cx| {
 4886        e.handle_input("( ", window, cx);
 4887        e.paste(&Paste, window, cx);
 4888        e.handle_input(") ", window, cx);
 4889    });
 4890    cx.assert_editor_state(
 4891        &([
 4892            "( one✅ ",
 4893            "three ",
 4894            "five ) ˇtwo one✅ four three six five ( one✅ ",
 4895            "three ",
 4896            "five ) ˇ",
 4897        ]
 4898        .join("\n")),
 4899    );
 4900
 4901    // Cut with three selections, one of which is full-line.
 4902    cx.set_state(indoc! {"
 4903        1«2ˇ»3
 4904        4ˇ567
 4905        «8ˇ»9"});
 4906    cx.update_editor(|e, window, cx| e.cut(&Cut, window, cx));
 4907    cx.assert_editor_state(indoc! {"
 4908        1ˇ3
 4909        ˇ9"});
 4910
 4911    // Paste with three selections, noticing how the copied selection that was full-line
 4912    // gets inserted before the second cursor.
 4913    cx.set_state(indoc! {"
 4914        1ˇ3
 4915 4916        «oˇ»ne"});
 4917    cx.update_editor(|e, window, cx| e.paste(&Paste, window, cx));
 4918    cx.assert_editor_state(indoc! {"
 4919        12ˇ3
 4920        4567
 4921 4922        8ˇne"});
 4923
 4924    // Copy with a single cursor only, which writes the whole line into the clipboard.
 4925    cx.set_state(indoc! {"
 4926        The quick brown
 4927        fox juˇmps over
 4928        the lazy dog"});
 4929    cx.update_editor(|e, window, cx| e.copy(&Copy, window, cx));
 4930    assert_eq!(
 4931        cx.read_from_clipboard()
 4932            .and_then(|item| item.text().as_deref().map(str::to_string)),
 4933        Some("fox jumps over\n".to_string())
 4934    );
 4935
 4936    // Paste with three selections, noticing how the copied full-line selection is inserted
 4937    // before the empty selections but replaces the selection that is non-empty.
 4938    cx.set_state(indoc! {"
 4939        Tˇhe quick brown
 4940        «foˇ»x jumps over
 4941        tˇhe lazy dog"});
 4942    cx.update_editor(|e, window, cx| e.paste(&Paste, window, cx));
 4943    cx.assert_editor_state(indoc! {"
 4944        fox jumps over
 4945        Tˇhe quick brown
 4946        fox jumps over
 4947        ˇx jumps over
 4948        fox jumps over
 4949        tˇhe lazy dog"});
 4950}
 4951
 4952#[gpui::test]
 4953async fn test_copy_trim(cx: &mut TestAppContext) {
 4954    init_test(cx, |_| {});
 4955
 4956    let mut cx = EditorTestContext::new(cx).await;
 4957    cx.set_state(
 4958        r#"            «for selection in selections.iter() {
 4959            let mut start = selection.start;
 4960            let mut end = selection.end;
 4961            let is_entire_line = selection.is_empty();
 4962            if is_entire_line {
 4963                start = Point::new(start.row, 0);ˇ»
 4964                end = cmp::min(max_point, Point::new(end.row + 1, 0));
 4965            }
 4966        "#,
 4967    );
 4968    cx.update_editor(|e, window, cx| e.copy(&Copy, window, cx));
 4969    assert_eq!(
 4970        cx.read_from_clipboard()
 4971            .and_then(|item| item.text().as_deref().map(str::to_string)),
 4972        Some(
 4973            "for selection in selections.iter() {
 4974            let mut start = selection.start;
 4975            let mut end = selection.end;
 4976            let is_entire_line = selection.is_empty();
 4977            if is_entire_line {
 4978                start = Point::new(start.row, 0);"
 4979                .to_string()
 4980        ),
 4981        "Regular copying preserves all indentation selected",
 4982    );
 4983    cx.update_editor(|e, window, cx| e.copy_and_trim(&CopyAndTrim, window, cx));
 4984    assert_eq!(
 4985        cx.read_from_clipboard()
 4986            .and_then(|item| item.text().as_deref().map(str::to_string)),
 4987        Some(
 4988            "for selection in selections.iter() {
 4989let mut start = selection.start;
 4990let mut end = selection.end;
 4991let is_entire_line = selection.is_empty();
 4992if is_entire_line {
 4993    start = Point::new(start.row, 0);"
 4994                .to_string()
 4995        ),
 4996        "Copying with stripping should strip all leading whitespaces"
 4997    );
 4998
 4999    cx.set_state(
 5000        r#"       «     for selection in selections.iter() {
 5001            let mut start = selection.start;
 5002            let mut end = selection.end;
 5003            let is_entire_line = selection.is_empty();
 5004            if is_entire_line {
 5005                start = Point::new(start.row, 0);ˇ»
 5006                end = cmp::min(max_point, Point::new(end.row + 1, 0));
 5007            }
 5008        "#,
 5009    );
 5010    cx.update_editor(|e, window, cx| e.copy(&Copy, window, cx));
 5011    assert_eq!(
 5012        cx.read_from_clipboard()
 5013            .and_then(|item| item.text().as_deref().map(str::to_string)),
 5014        Some(
 5015            "     for selection in selections.iter() {
 5016            let mut start = selection.start;
 5017            let mut end = selection.end;
 5018            let is_entire_line = selection.is_empty();
 5019            if is_entire_line {
 5020                start = Point::new(start.row, 0);"
 5021                .to_string()
 5022        ),
 5023        "Regular copying preserves all indentation selected",
 5024    );
 5025    cx.update_editor(|e, window, cx| e.copy_and_trim(&CopyAndTrim, window, cx));
 5026    assert_eq!(
 5027        cx.read_from_clipboard()
 5028            .and_then(|item| item.text().as_deref().map(str::to_string)),
 5029        Some(
 5030            "for selection in selections.iter() {
 5031let mut start = selection.start;
 5032let mut end = selection.end;
 5033let is_entire_line = selection.is_empty();
 5034if is_entire_line {
 5035    start = Point::new(start.row, 0);"
 5036                .to_string()
 5037        ),
 5038        "Copying with stripping should strip all leading whitespaces, even if some of it was selected"
 5039    );
 5040
 5041    cx.set_state(
 5042        r#"       «ˇ     for selection in selections.iter() {
 5043            let mut start = selection.start;
 5044            let mut end = selection.end;
 5045            let is_entire_line = selection.is_empty();
 5046            if is_entire_line {
 5047                start = Point::new(start.row, 0);»
 5048                end = cmp::min(max_point, Point::new(end.row + 1, 0));
 5049            }
 5050        "#,
 5051    );
 5052    cx.update_editor(|e, window, cx| e.copy(&Copy, window, cx));
 5053    assert_eq!(
 5054        cx.read_from_clipboard()
 5055            .and_then(|item| item.text().as_deref().map(str::to_string)),
 5056        Some(
 5057            "     for selection in selections.iter() {
 5058            let mut start = selection.start;
 5059            let mut end = selection.end;
 5060            let is_entire_line = selection.is_empty();
 5061            if is_entire_line {
 5062                start = Point::new(start.row, 0);"
 5063                .to_string()
 5064        ),
 5065        "Regular copying for reverse selection works the same",
 5066    );
 5067    cx.update_editor(|e, window, cx| e.copy_and_trim(&CopyAndTrim, window, cx));
 5068    assert_eq!(
 5069        cx.read_from_clipboard()
 5070            .and_then(|item| item.text().as_deref().map(str::to_string)),
 5071        Some(
 5072            "for selection in selections.iter() {
 5073let mut start = selection.start;
 5074let mut end = selection.end;
 5075let is_entire_line = selection.is_empty();
 5076if is_entire_line {
 5077    start = Point::new(start.row, 0);"
 5078                .to_string()
 5079        ),
 5080        "Copying with stripping for reverse selection works the same"
 5081    );
 5082
 5083    cx.set_state(
 5084        r#"            for selection «in selections.iter() {
 5085            let mut start = selection.start;
 5086            let mut end = selection.end;
 5087            let is_entire_line = selection.is_empty();
 5088            if is_entire_line {
 5089                start = Point::new(start.row, 0);ˇ»
 5090                end = cmp::min(max_point, Point::new(end.row + 1, 0));
 5091            }
 5092        "#,
 5093    );
 5094    cx.update_editor(|e, window, cx| e.copy(&Copy, window, cx));
 5095    assert_eq!(
 5096        cx.read_from_clipboard()
 5097            .and_then(|item| item.text().as_deref().map(str::to_string)),
 5098        Some(
 5099            "in selections.iter() {
 5100            let mut start = selection.start;
 5101            let mut end = selection.end;
 5102            let is_entire_line = selection.is_empty();
 5103            if is_entire_line {
 5104                start = Point::new(start.row, 0);"
 5105                .to_string()
 5106        ),
 5107        "When selecting past the indent, the copying works as usual",
 5108    );
 5109    cx.update_editor(|e, window, cx| e.copy_and_trim(&CopyAndTrim, window, cx));
 5110    assert_eq!(
 5111        cx.read_from_clipboard()
 5112            .and_then(|item| item.text().as_deref().map(str::to_string)),
 5113        Some(
 5114            "in selections.iter() {
 5115            let mut start = selection.start;
 5116            let mut end = selection.end;
 5117            let is_entire_line = selection.is_empty();
 5118            if is_entire_line {
 5119                start = Point::new(start.row, 0);"
 5120                .to_string()
 5121        ),
 5122        "When selecting past the indent, nothing is trimmed"
 5123    );
 5124
 5125    cx.set_state(
 5126        r#"            «for selection in selections.iter() {
 5127            let mut start = selection.start;
 5128
 5129            let mut end = selection.end;
 5130            let is_entire_line = selection.is_empty();
 5131            if is_entire_line {
 5132                start = Point::new(start.row, 0);
 5133ˇ»                end = cmp::min(max_point, Point::new(end.row + 1, 0));
 5134            }
 5135        "#,
 5136    );
 5137    cx.update_editor(|e, window, cx| e.copy_and_trim(&CopyAndTrim, window, cx));
 5138    assert_eq!(
 5139        cx.read_from_clipboard()
 5140            .and_then(|item| item.text().as_deref().map(str::to_string)),
 5141        Some(
 5142            "for selection in selections.iter() {
 5143let mut start = selection.start;
 5144
 5145let mut end = selection.end;
 5146let is_entire_line = selection.is_empty();
 5147if is_entire_line {
 5148    start = Point::new(start.row, 0);
 5149"
 5150            .to_string()
 5151        ),
 5152        "Copying with stripping should ignore empty lines"
 5153    );
 5154}
 5155
 5156#[gpui::test]
 5157async fn test_paste_multiline(cx: &mut TestAppContext) {
 5158    init_test(cx, |_| {});
 5159
 5160    let mut cx = EditorTestContext::new(cx).await;
 5161    cx.update_buffer(|buffer, cx| buffer.set_language(Some(rust_lang()), cx));
 5162
 5163    // Cut an indented block, without the leading whitespace.
 5164    cx.set_state(indoc! {"
 5165        const a: B = (
 5166            c(),
 5167            «d(
 5168                e,
 5169                f
 5170            )ˇ»
 5171        );
 5172    "});
 5173    cx.update_editor(|e, window, cx| e.cut(&Cut, window, cx));
 5174    cx.assert_editor_state(indoc! {"
 5175        const a: B = (
 5176            c(),
 5177            ˇ
 5178        );
 5179    "});
 5180
 5181    // Paste it at the same position.
 5182    cx.update_editor(|e, window, cx| e.paste(&Paste, window, cx));
 5183    cx.assert_editor_state(indoc! {"
 5184        const a: B = (
 5185            c(),
 5186            d(
 5187                e,
 5188                f
 5189 5190        );
 5191    "});
 5192
 5193    // Paste it at a line with a lower indent level.
 5194    cx.set_state(indoc! {"
 5195        ˇ
 5196        const a: B = (
 5197            c(),
 5198        );
 5199    "});
 5200    cx.update_editor(|e, window, cx| e.paste(&Paste, window, cx));
 5201    cx.assert_editor_state(indoc! {"
 5202        d(
 5203            e,
 5204            f
 5205 5206        const a: B = (
 5207            c(),
 5208        );
 5209    "});
 5210
 5211    // Cut an indented block, with the leading whitespace.
 5212    cx.set_state(indoc! {"
 5213        const a: B = (
 5214            c(),
 5215        «    d(
 5216                e,
 5217                f
 5218            )
 5219        ˇ»);
 5220    "});
 5221    cx.update_editor(|e, window, cx| e.cut(&Cut, window, cx));
 5222    cx.assert_editor_state(indoc! {"
 5223        const a: B = (
 5224            c(),
 5225        ˇ);
 5226    "});
 5227
 5228    // Paste it at the same position.
 5229    cx.update_editor(|e, window, cx| e.paste(&Paste, window, cx));
 5230    cx.assert_editor_state(indoc! {"
 5231        const a: B = (
 5232            c(),
 5233            d(
 5234                e,
 5235                f
 5236            )
 5237        ˇ);
 5238    "});
 5239
 5240    // Paste it at a line with a higher indent level.
 5241    cx.set_state(indoc! {"
 5242        const a: B = (
 5243            c(),
 5244            d(
 5245                e,
 5246 5247            )
 5248        );
 5249    "});
 5250    cx.update_editor(|e, window, cx| e.paste(&Paste, window, cx));
 5251    cx.assert_editor_state(indoc! {"
 5252        const a: B = (
 5253            c(),
 5254            d(
 5255                e,
 5256                f    d(
 5257                    e,
 5258                    f
 5259                )
 5260        ˇ
 5261            )
 5262        );
 5263    "});
 5264
 5265    // Copy an indented block, starting mid-line
 5266    cx.set_state(indoc! {"
 5267        const a: B = (
 5268            c(),
 5269            somethin«g(
 5270                e,
 5271                f
 5272            )ˇ»
 5273        );
 5274    "});
 5275    cx.update_editor(|e, window, cx| e.copy(&Copy, window, cx));
 5276
 5277    // Paste it on a line with a lower indent level
 5278    cx.update_editor(|e, window, cx| e.move_to_end(&Default::default(), window, cx));
 5279    cx.update_editor(|e, window, cx| e.paste(&Paste, window, cx));
 5280    cx.assert_editor_state(indoc! {"
 5281        const a: B = (
 5282            c(),
 5283            something(
 5284                e,
 5285                f
 5286            )
 5287        );
 5288        g(
 5289            e,
 5290            f
 5291"});
 5292}
 5293
 5294#[gpui::test]
 5295async fn test_paste_content_from_other_app(cx: &mut TestAppContext) {
 5296    init_test(cx, |_| {});
 5297
 5298    cx.write_to_clipboard(ClipboardItem::new_string(
 5299        "    d(\n        e\n    );\n".into(),
 5300    ));
 5301
 5302    let mut cx = EditorTestContext::new(cx).await;
 5303    cx.update_buffer(|buffer, cx| buffer.set_language(Some(rust_lang()), cx));
 5304
 5305    cx.set_state(indoc! {"
 5306        fn a() {
 5307            b();
 5308            if c() {
 5309                ˇ
 5310            }
 5311        }
 5312    "});
 5313
 5314    cx.update_editor(|e, window, cx| e.paste(&Paste, window, cx));
 5315    cx.assert_editor_state(indoc! {"
 5316        fn a() {
 5317            b();
 5318            if c() {
 5319                d(
 5320                    e
 5321                );
 5322        ˇ
 5323            }
 5324        }
 5325    "});
 5326
 5327    cx.set_state(indoc! {"
 5328        fn a() {
 5329            b();
 5330            ˇ
 5331        }
 5332    "});
 5333
 5334    cx.update_editor(|e, window, cx| e.paste(&Paste, window, cx));
 5335    cx.assert_editor_state(indoc! {"
 5336        fn a() {
 5337            b();
 5338            d(
 5339                e
 5340            );
 5341        ˇ
 5342        }
 5343    "});
 5344}
 5345
 5346#[gpui::test]
 5347fn test_select_all(cx: &mut TestAppContext) {
 5348    init_test(cx, |_| {});
 5349
 5350    let editor = cx.add_window(|window, cx| {
 5351        let buffer = MultiBuffer::build_simple("abc\nde\nfgh", cx);
 5352        build_editor(buffer, window, cx)
 5353    });
 5354    _ = editor.update(cx, |editor, window, cx| {
 5355        editor.select_all(&SelectAll, window, cx);
 5356        assert_eq!(
 5357            editor.selections.display_ranges(cx),
 5358            &[DisplayPoint::new(DisplayRow(0), 0)..DisplayPoint::new(DisplayRow(2), 3)]
 5359        );
 5360    });
 5361}
 5362
 5363#[gpui::test]
 5364fn test_select_line(cx: &mut TestAppContext) {
 5365    init_test(cx, |_| {});
 5366
 5367    let editor = cx.add_window(|window, cx| {
 5368        let buffer = MultiBuffer::build_simple(&sample_text(6, 5, 'a'), cx);
 5369        build_editor(buffer, window, cx)
 5370    });
 5371    _ = editor.update(cx, |editor, window, cx| {
 5372        editor.change_selections(None, window, cx, |s| {
 5373            s.select_display_ranges([
 5374                DisplayPoint::new(DisplayRow(0), 0)..DisplayPoint::new(DisplayRow(0), 1),
 5375                DisplayPoint::new(DisplayRow(0), 2)..DisplayPoint::new(DisplayRow(0), 2),
 5376                DisplayPoint::new(DisplayRow(1), 0)..DisplayPoint::new(DisplayRow(1), 0),
 5377                DisplayPoint::new(DisplayRow(4), 2)..DisplayPoint::new(DisplayRow(4), 2),
 5378            ])
 5379        });
 5380        editor.select_line(&SelectLine, window, cx);
 5381        assert_eq!(
 5382            editor.selections.display_ranges(cx),
 5383            vec![
 5384                DisplayPoint::new(DisplayRow(0), 0)..DisplayPoint::new(DisplayRow(2), 0),
 5385                DisplayPoint::new(DisplayRow(4), 0)..DisplayPoint::new(DisplayRow(5), 0),
 5386            ]
 5387        );
 5388    });
 5389
 5390    _ = editor.update(cx, |editor, window, cx| {
 5391        editor.select_line(&SelectLine, window, cx);
 5392        assert_eq!(
 5393            editor.selections.display_ranges(cx),
 5394            vec![
 5395                DisplayPoint::new(DisplayRow(0), 0)..DisplayPoint::new(DisplayRow(3), 0),
 5396                DisplayPoint::new(DisplayRow(4), 0)..DisplayPoint::new(DisplayRow(5), 5),
 5397            ]
 5398        );
 5399    });
 5400
 5401    _ = editor.update(cx, |editor, window, cx| {
 5402        editor.select_line(&SelectLine, window, cx);
 5403        assert_eq!(
 5404            editor.selections.display_ranges(cx),
 5405            vec![DisplayPoint::new(DisplayRow(0), 0)..DisplayPoint::new(DisplayRow(5), 5)]
 5406        );
 5407    });
 5408}
 5409
 5410#[gpui::test]
 5411async fn test_split_selection_into_lines(cx: &mut TestAppContext) {
 5412    init_test(cx, |_| {});
 5413    let mut cx = EditorTestContext::new(cx).await;
 5414
 5415    #[track_caller]
 5416    fn test(cx: &mut EditorTestContext, initial_state: &'static str, expected_state: &'static str) {
 5417        cx.set_state(initial_state);
 5418        cx.update_editor(|e, window, cx| {
 5419            e.split_selection_into_lines(&SplitSelectionIntoLines, window, cx)
 5420        });
 5421        cx.assert_editor_state(expected_state);
 5422    }
 5423
 5424    // Selection starts and ends at the middle of lines, left-to-right
 5425    test(
 5426        &mut cx,
 5427        "aa\nb«ˇb\ncc\ndd\ne»e\nff",
 5428        "aa\nbbˇ\nccˇ\nddˇ\neˇe\nff",
 5429    );
 5430    // Same thing, right-to-left
 5431    test(
 5432        &mut cx,
 5433        "aa\nb«b\ncc\ndd\neˇ»e\nff",
 5434        "aa\nbbˇ\nccˇ\nddˇ\neˇe\nff",
 5435    );
 5436
 5437    // Whole buffer, left-to-right, last line *doesn't* end with newline
 5438    test(
 5439        &mut cx,
 5440        "«ˇaa\nbb\ncc\ndd\nee\nff»",
 5441        "aaˇ\nbbˇ\nccˇ\nddˇ\neeˇ\nffˇ",
 5442    );
 5443    // Same thing, right-to-left
 5444    test(
 5445        &mut cx,
 5446        "«aa\nbb\ncc\ndd\nee\nffˇ»",
 5447        "aaˇ\nbbˇ\nccˇ\nddˇ\neeˇ\nffˇ",
 5448    );
 5449
 5450    // Whole buffer, left-to-right, last line ends with newline
 5451    test(
 5452        &mut cx,
 5453        "«ˇaa\nbb\ncc\ndd\nee\nff\n»",
 5454        "aaˇ\nbbˇ\nccˇ\nddˇ\neeˇ\nffˇ\n",
 5455    );
 5456    // Same thing, right-to-left
 5457    test(
 5458        &mut cx,
 5459        "«aa\nbb\ncc\ndd\nee\nff\nˇ»",
 5460        "aaˇ\nbbˇ\nccˇ\nddˇ\neeˇ\nffˇ\n",
 5461    );
 5462
 5463    // Starts at the end of a line, ends at the start of another
 5464    test(
 5465        &mut cx,
 5466        "aa\nbb«ˇ\ncc\ndd\nee\n»ff\n",
 5467        "aa\nbbˇ\nccˇ\nddˇ\neeˇ\nff\n",
 5468    );
 5469}
 5470
 5471#[gpui::test]
 5472async fn test_split_selection_into_lines_interacting_with_creases(cx: &mut TestAppContext) {
 5473    init_test(cx, |_| {});
 5474
 5475    let editor = cx.add_window(|window, cx| {
 5476        let buffer = MultiBuffer::build_simple(&sample_text(9, 5, 'a'), cx);
 5477        build_editor(buffer, window, cx)
 5478    });
 5479
 5480    // setup
 5481    _ = editor.update(cx, |editor, window, cx| {
 5482        editor.fold_creases(
 5483            vec![
 5484                Crease::simple(Point::new(0, 2)..Point::new(1, 2), FoldPlaceholder::test()),
 5485                Crease::simple(Point::new(2, 3)..Point::new(4, 1), FoldPlaceholder::test()),
 5486                Crease::simple(Point::new(7, 0)..Point::new(8, 4), FoldPlaceholder::test()),
 5487            ],
 5488            true,
 5489            window,
 5490            cx,
 5491        );
 5492        assert_eq!(
 5493            editor.display_text(cx),
 5494            "aa⋯bbb\nccc⋯eeee\nfffff\nggggg\n⋯i"
 5495        );
 5496    });
 5497
 5498    _ = editor.update(cx, |editor, window, cx| {
 5499        editor.change_selections(None, window, cx, |s| {
 5500            s.select_display_ranges([
 5501                DisplayPoint::new(DisplayRow(0), 0)..DisplayPoint::new(DisplayRow(0), 1),
 5502                DisplayPoint::new(DisplayRow(0), 2)..DisplayPoint::new(DisplayRow(0), 2),
 5503                DisplayPoint::new(DisplayRow(1), 0)..DisplayPoint::new(DisplayRow(1), 0),
 5504                DisplayPoint::new(DisplayRow(4), 4)..DisplayPoint::new(DisplayRow(4), 4),
 5505            ])
 5506        });
 5507        editor.split_selection_into_lines(&SplitSelectionIntoLines, window, cx);
 5508        assert_eq!(
 5509            editor.display_text(cx),
 5510            "aaaaa\nbbbbb\nccc⋯eeee\nfffff\nggggg\n⋯i"
 5511        );
 5512    });
 5513    EditorTestContext::for_editor(editor, cx)
 5514        .await
 5515        .assert_editor_state("aˇaˇaaa\nbbbbb\nˇccccc\nddddd\neeeee\nfffff\nggggg\nhhhhh\niiiiiˇ");
 5516
 5517    _ = editor.update(cx, |editor, window, cx| {
 5518        editor.change_selections(None, window, cx, |s| {
 5519            s.select_display_ranges([
 5520                DisplayPoint::new(DisplayRow(5), 0)..DisplayPoint::new(DisplayRow(0), 1)
 5521            ])
 5522        });
 5523        editor.split_selection_into_lines(&SplitSelectionIntoLines, window, cx);
 5524        assert_eq!(
 5525            editor.display_text(cx),
 5526            "aaaaa\nbbbbb\nccccc\nddddd\neeeee\nfffff\nggggg\nhhhhh\niiiii"
 5527        );
 5528        assert_eq!(
 5529            editor.selections.display_ranges(cx),
 5530            [
 5531                DisplayPoint::new(DisplayRow(0), 5)..DisplayPoint::new(DisplayRow(0), 5),
 5532                DisplayPoint::new(DisplayRow(1), 5)..DisplayPoint::new(DisplayRow(1), 5),
 5533                DisplayPoint::new(DisplayRow(2), 5)..DisplayPoint::new(DisplayRow(2), 5),
 5534                DisplayPoint::new(DisplayRow(3), 5)..DisplayPoint::new(DisplayRow(3), 5),
 5535                DisplayPoint::new(DisplayRow(4), 5)..DisplayPoint::new(DisplayRow(4), 5),
 5536                DisplayPoint::new(DisplayRow(5), 5)..DisplayPoint::new(DisplayRow(5), 5),
 5537                DisplayPoint::new(DisplayRow(6), 5)..DisplayPoint::new(DisplayRow(6), 5)
 5538            ]
 5539        );
 5540    });
 5541    EditorTestContext::for_editor(editor, cx)
 5542        .await
 5543        .assert_editor_state(
 5544            "aaaaaˇ\nbbbbbˇ\ncccccˇ\ndddddˇ\neeeeeˇ\nfffffˇ\ngggggˇ\nhhhhh\niiiii",
 5545        );
 5546}
 5547
 5548#[gpui::test]
 5549async fn test_add_selection_above_below(cx: &mut TestAppContext) {
 5550    init_test(cx, |_| {});
 5551
 5552    let mut cx = EditorTestContext::new(cx).await;
 5553
 5554    cx.set_state(indoc!(
 5555        r#"abc
 5556           defˇghi
 5557
 5558           jk
 5559           nlmo
 5560           "#
 5561    ));
 5562
 5563    cx.update_editor(|editor, window, cx| {
 5564        editor.add_selection_above(&Default::default(), window, cx);
 5565    });
 5566
 5567    cx.assert_editor_state(indoc!(
 5568        r#"abcˇ
 5569           defˇghi
 5570
 5571           jk
 5572           nlmo
 5573           "#
 5574    ));
 5575
 5576    cx.update_editor(|editor, window, cx| {
 5577        editor.add_selection_above(&Default::default(), window, cx);
 5578    });
 5579
 5580    cx.assert_editor_state(indoc!(
 5581        r#"abcˇ
 5582            defˇghi
 5583
 5584            jk
 5585            nlmo
 5586            "#
 5587    ));
 5588
 5589    cx.update_editor(|editor, window, cx| {
 5590        editor.add_selection_below(&Default::default(), window, cx);
 5591    });
 5592
 5593    cx.assert_editor_state(indoc!(
 5594        r#"abc
 5595           defˇghi
 5596
 5597           jk
 5598           nlmo
 5599           "#
 5600    ));
 5601
 5602    cx.update_editor(|editor, window, cx| {
 5603        editor.undo_selection(&Default::default(), window, cx);
 5604    });
 5605
 5606    cx.assert_editor_state(indoc!(
 5607        r#"abcˇ
 5608           defˇghi
 5609
 5610           jk
 5611           nlmo
 5612           "#
 5613    ));
 5614
 5615    cx.update_editor(|editor, window, cx| {
 5616        editor.redo_selection(&Default::default(), window, cx);
 5617    });
 5618
 5619    cx.assert_editor_state(indoc!(
 5620        r#"abc
 5621           defˇghi
 5622
 5623           jk
 5624           nlmo
 5625           "#
 5626    ));
 5627
 5628    cx.update_editor(|editor, window, cx| {
 5629        editor.add_selection_below(&Default::default(), window, cx);
 5630    });
 5631
 5632    cx.assert_editor_state(indoc!(
 5633        r#"abc
 5634           defˇghi
 5635
 5636           jk
 5637           nlmˇo
 5638           "#
 5639    ));
 5640
 5641    cx.update_editor(|editor, window, cx| {
 5642        editor.add_selection_below(&Default::default(), window, cx);
 5643    });
 5644
 5645    cx.assert_editor_state(indoc!(
 5646        r#"abc
 5647           defˇghi
 5648
 5649           jk
 5650           nlmˇo
 5651           "#
 5652    ));
 5653
 5654    // change selections
 5655    cx.set_state(indoc!(
 5656        r#"abc
 5657           def«ˇg»hi
 5658
 5659           jk
 5660           nlmo
 5661           "#
 5662    ));
 5663
 5664    cx.update_editor(|editor, window, cx| {
 5665        editor.add_selection_below(&Default::default(), window, cx);
 5666    });
 5667
 5668    cx.assert_editor_state(indoc!(
 5669        r#"abc
 5670           def«ˇg»hi
 5671
 5672           jk
 5673           nlm«ˇo»
 5674           "#
 5675    ));
 5676
 5677    cx.update_editor(|editor, window, cx| {
 5678        editor.add_selection_below(&Default::default(), window, cx);
 5679    });
 5680
 5681    cx.assert_editor_state(indoc!(
 5682        r#"abc
 5683           def«ˇg»hi
 5684
 5685           jk
 5686           nlm«ˇo»
 5687           "#
 5688    ));
 5689
 5690    cx.update_editor(|editor, window, cx| {
 5691        editor.add_selection_above(&Default::default(), window, cx);
 5692    });
 5693
 5694    cx.assert_editor_state(indoc!(
 5695        r#"abc
 5696           def«ˇg»hi
 5697
 5698           jk
 5699           nlmo
 5700           "#
 5701    ));
 5702
 5703    cx.update_editor(|editor, window, cx| {
 5704        editor.add_selection_above(&Default::default(), window, cx);
 5705    });
 5706
 5707    cx.assert_editor_state(indoc!(
 5708        r#"abc
 5709           def«ˇg»hi
 5710
 5711           jk
 5712           nlmo
 5713           "#
 5714    ));
 5715
 5716    // Change selections again
 5717    cx.set_state(indoc!(
 5718        r#"a«bc
 5719           defgˇ»hi
 5720
 5721           jk
 5722           nlmo
 5723           "#
 5724    ));
 5725
 5726    cx.update_editor(|editor, window, cx| {
 5727        editor.add_selection_below(&Default::default(), window, cx);
 5728    });
 5729
 5730    cx.assert_editor_state(indoc!(
 5731        r#"a«bcˇ»
 5732           d«efgˇ»hi
 5733
 5734           j«kˇ»
 5735           nlmo
 5736           "#
 5737    ));
 5738
 5739    cx.update_editor(|editor, window, cx| {
 5740        editor.add_selection_below(&Default::default(), window, cx);
 5741    });
 5742    cx.assert_editor_state(indoc!(
 5743        r#"a«bcˇ»
 5744           d«efgˇ»hi
 5745
 5746           j«kˇ»
 5747           n«lmoˇ»
 5748           "#
 5749    ));
 5750    cx.update_editor(|editor, window, cx| {
 5751        editor.add_selection_above(&Default::default(), window, cx);
 5752    });
 5753
 5754    cx.assert_editor_state(indoc!(
 5755        r#"a«bcˇ»
 5756           d«efgˇ»hi
 5757
 5758           j«kˇ»
 5759           nlmo
 5760           "#
 5761    ));
 5762
 5763    // Change selections again
 5764    cx.set_state(indoc!(
 5765        r#"abc
 5766           d«ˇefghi
 5767
 5768           jk
 5769           nlm»o
 5770           "#
 5771    ));
 5772
 5773    cx.update_editor(|editor, window, cx| {
 5774        editor.add_selection_above(&Default::default(), window, cx);
 5775    });
 5776
 5777    cx.assert_editor_state(indoc!(
 5778        r#"a«ˇbc»
 5779           d«ˇef»ghi
 5780
 5781           j«ˇk»
 5782           n«ˇlm»o
 5783           "#
 5784    ));
 5785
 5786    cx.update_editor(|editor, window, cx| {
 5787        editor.add_selection_below(&Default::default(), window, cx);
 5788    });
 5789
 5790    cx.assert_editor_state(indoc!(
 5791        r#"abc
 5792           d«ˇef»ghi
 5793
 5794           j«ˇk»
 5795           n«ˇlm»o
 5796           "#
 5797    ));
 5798}
 5799
 5800#[gpui::test]
 5801async fn test_select_next(cx: &mut TestAppContext) {
 5802    init_test(cx, |_| {});
 5803
 5804    let mut cx = EditorTestContext::new(cx).await;
 5805    cx.set_state("abc\nˇabc abc\ndefabc\nabc");
 5806
 5807    cx.update_editor(|e, window, cx| e.select_next(&SelectNext::default(), window, cx))
 5808        .unwrap();
 5809    cx.assert_editor_state("abc\n«abcˇ» abc\ndefabc\nabc");
 5810
 5811    cx.update_editor(|e, window, cx| e.select_next(&SelectNext::default(), window, cx))
 5812        .unwrap();
 5813    cx.assert_editor_state("abc\n«abcˇ» «abcˇ»\ndefabc\nabc");
 5814
 5815    cx.update_editor(|editor, window, cx| editor.undo_selection(&UndoSelection, window, cx));
 5816    cx.assert_editor_state("abc\n«abcˇ» abc\ndefabc\nabc");
 5817
 5818    cx.update_editor(|editor, window, cx| editor.redo_selection(&RedoSelection, window, cx));
 5819    cx.assert_editor_state("abc\n«abcˇ» «abcˇ»\ndefabc\nabc");
 5820
 5821    cx.update_editor(|e, window, cx| e.select_next(&SelectNext::default(), window, cx))
 5822        .unwrap();
 5823    cx.assert_editor_state("abc\n«abcˇ» «abcˇ»\ndefabc\n«abcˇ»");
 5824
 5825    cx.update_editor(|e, window, cx| e.select_next(&SelectNext::default(), window, cx))
 5826        .unwrap();
 5827    cx.assert_editor_state("«abcˇ»\n«abcˇ» «abcˇ»\ndefabc\n«abcˇ»");
 5828
 5829    // Test selection direction should be preserved
 5830    cx.set_state("abc\n«ˇabc» abc\ndefabc\nabc");
 5831
 5832    cx.update_editor(|e, window, cx| e.select_next(&SelectNext::default(), window, cx))
 5833        .unwrap();
 5834    cx.assert_editor_state("abc\n«ˇabc» «ˇabc»\ndefabc\nabc");
 5835}
 5836
 5837#[gpui::test]
 5838async fn test_select_all_matches(cx: &mut TestAppContext) {
 5839    init_test(cx, |_| {});
 5840
 5841    let mut cx = EditorTestContext::new(cx).await;
 5842
 5843    // Test caret-only selections
 5844    cx.set_state("abc\nˇabc abc\ndefabc\nabc");
 5845    cx.update_editor(|e, window, cx| e.select_all_matches(&SelectAllMatches, window, cx))
 5846        .unwrap();
 5847    cx.assert_editor_state("«abcˇ»\n«abcˇ» «abcˇ»\ndefabc\n«abcˇ»");
 5848
 5849    // Test left-to-right selections
 5850    cx.set_state("abc\n«abcˇ»\nabc");
 5851    cx.update_editor(|e, window, cx| e.select_all_matches(&SelectAllMatches, window, cx))
 5852        .unwrap();
 5853    cx.assert_editor_state("«abcˇ»\n«abcˇ»\n«abcˇ»");
 5854
 5855    // Test right-to-left selections
 5856    cx.set_state("abc\n«ˇabc»\nabc");
 5857    cx.update_editor(|e, window, cx| e.select_all_matches(&SelectAllMatches, window, cx))
 5858        .unwrap();
 5859    cx.assert_editor_state("«ˇabc»\n«ˇabc»\n«ˇabc»");
 5860
 5861    // Test selecting whitespace with caret selection
 5862    cx.set_state("abc\nˇ   abc\nabc");
 5863    cx.update_editor(|e, window, cx| e.select_all_matches(&SelectAllMatches, window, cx))
 5864        .unwrap();
 5865    cx.assert_editor_state("abc\n«   ˇ»abc\nabc");
 5866
 5867    // Test selecting whitespace with left-to-right selection
 5868    cx.set_state("abc\n«ˇ  »abc\nabc");
 5869    cx.update_editor(|e, window, cx| e.select_all_matches(&SelectAllMatches, window, cx))
 5870        .unwrap();
 5871    cx.assert_editor_state("abc\n«ˇ  »abc\nabc");
 5872
 5873    // Test no matches with right-to-left selection
 5874    cx.set_state("abc\n«  ˇ»abc\nabc");
 5875    cx.update_editor(|e, window, cx| e.select_all_matches(&SelectAllMatches, window, cx))
 5876        .unwrap();
 5877    cx.assert_editor_state("abc\n«  ˇ»abc\nabc");
 5878}
 5879
 5880#[gpui::test]
 5881async fn test_select_all_matches_does_not_scroll(cx: &mut TestAppContext) {
 5882    init_test(cx, |_| {});
 5883
 5884    let mut cx = EditorTestContext::new(cx).await;
 5885
 5886    let large_body_1 = "\nd".repeat(200);
 5887    let large_body_2 = "\ne".repeat(200);
 5888
 5889    cx.set_state(&format!(
 5890        "abc\nabc{large_body_1} «ˇa»bc{large_body_2}\nefabc\nabc"
 5891    ));
 5892    let initial_scroll_position = cx.update_editor(|editor, _, cx| {
 5893        let scroll_position = editor.scroll_position(cx);
 5894        assert!(scroll_position.y > 0.0, "Initial selection is between two large bodies and should have the editor scrolled to it");
 5895        scroll_position
 5896    });
 5897
 5898    cx.update_editor(|e, window, cx| e.select_all_matches(&SelectAllMatches, window, cx))
 5899        .unwrap();
 5900    cx.assert_editor_state(&format!(
 5901        "«ˇa»bc\n«ˇa»bc{large_body_1} «ˇa»bc{large_body_2}\nef«ˇa»bc\n«ˇa»bc"
 5902    ));
 5903    let scroll_position_after_selection =
 5904        cx.update_editor(|editor, _, cx| editor.scroll_position(cx));
 5905    assert_eq!(
 5906        initial_scroll_position, scroll_position_after_selection,
 5907        "Scroll position should not change after selecting all matches"
 5908    );
 5909}
 5910
 5911#[gpui::test]
 5912async fn test_undo_format_scrolls_to_last_edit_pos(cx: &mut TestAppContext) {
 5913    init_test(cx, |_| {});
 5914
 5915    let mut cx = EditorLspTestContext::new_rust(
 5916        lsp::ServerCapabilities {
 5917            document_formatting_provider: Some(lsp::OneOf::Left(true)),
 5918            ..Default::default()
 5919        },
 5920        cx,
 5921    )
 5922    .await;
 5923
 5924    cx.set_state(indoc! {"
 5925        line 1
 5926        line 2
 5927        linˇe 3
 5928        line 4
 5929        line 5
 5930    "});
 5931
 5932    // Make an edit
 5933    cx.update_editor(|editor, window, cx| {
 5934        editor.handle_input("X", window, cx);
 5935    });
 5936
 5937    // Move cursor to a different position
 5938    cx.update_editor(|editor, window, cx| {
 5939        editor.change_selections(None, window, cx, |s| {
 5940            s.select_ranges([Point::new(4, 2)..Point::new(4, 2)]);
 5941        });
 5942    });
 5943
 5944    cx.assert_editor_state(indoc! {"
 5945        line 1
 5946        line 2
 5947        linXe 3
 5948        line 4
 5949        liˇne 5
 5950    "});
 5951
 5952    cx.lsp
 5953        .set_request_handler::<lsp::request::Formatting, _, _>(move |_, _| async move {
 5954            Ok(Some(vec![lsp::TextEdit::new(
 5955                lsp::Range::new(lsp::Position::new(0, 0), lsp::Position::new(0, 0)),
 5956                "PREFIX ".to_string(),
 5957            )]))
 5958        });
 5959
 5960    cx.update_editor(|editor, window, cx| editor.format(&Default::default(), window, cx))
 5961        .unwrap()
 5962        .await
 5963        .unwrap();
 5964
 5965    cx.assert_editor_state(indoc! {"
 5966        PREFIX line 1
 5967        line 2
 5968        linXe 3
 5969        line 4
 5970        liˇne 5
 5971    "});
 5972
 5973    // Undo formatting
 5974    cx.update_editor(|editor, window, cx| {
 5975        editor.undo(&Default::default(), window, cx);
 5976    });
 5977
 5978    // Verify cursor moved back to position after edit
 5979    cx.assert_editor_state(indoc! {"
 5980        line 1
 5981        line 2
 5982        linXˇe 3
 5983        line 4
 5984        line 5
 5985    "});
 5986}
 5987
 5988#[gpui::test]
 5989async fn test_select_next_with_multiple_carets(cx: &mut TestAppContext) {
 5990    init_test(cx, |_| {});
 5991
 5992    let mut cx = EditorTestContext::new(cx).await;
 5993    cx.set_state(
 5994        r#"let foo = 2;
 5995lˇet foo = 2;
 5996let fooˇ = 2;
 5997let foo = 2;
 5998let foo = ˇ2;"#,
 5999    );
 6000
 6001    cx.update_editor(|e, window, cx| e.select_next(&SelectNext::default(), window, cx))
 6002        .unwrap();
 6003    cx.assert_editor_state(
 6004        r#"let foo = 2;
 6005«letˇ» foo = 2;
 6006let «fooˇ» = 2;
 6007let foo = 2;
 6008let foo = «2ˇ»;"#,
 6009    );
 6010
 6011    // noop for multiple selections with different contents
 6012    cx.update_editor(|e, window, cx| e.select_next(&SelectNext::default(), window, cx))
 6013        .unwrap();
 6014    cx.assert_editor_state(
 6015        r#"let foo = 2;
 6016«letˇ» foo = 2;
 6017let «fooˇ» = 2;
 6018let foo = 2;
 6019let foo = «2ˇ»;"#,
 6020    );
 6021
 6022    // Test last selection direction should be preserved
 6023    cx.set_state(
 6024        r#"let foo = 2;
 6025let foo = 2;
 6026let «fooˇ» = 2;
 6027let «ˇfoo» = 2;
 6028let foo = 2;"#,
 6029    );
 6030
 6031    cx.update_editor(|e, window, cx| e.select_next(&SelectNext::default(), window, cx))
 6032        .unwrap();
 6033    cx.assert_editor_state(
 6034        r#"let foo = 2;
 6035let foo = 2;
 6036let «fooˇ» = 2;
 6037let «ˇfoo» = 2;
 6038let «ˇfoo» = 2;"#,
 6039    );
 6040}
 6041
 6042#[gpui::test]
 6043async fn test_select_previous_multibuffer(cx: &mut TestAppContext) {
 6044    init_test(cx, |_| {});
 6045
 6046    let mut cx =
 6047        EditorTestContext::new_multibuffer(cx, ["aaa\n«bbb\nccc\n»ddd", "aaa\n«bbb\nccc\n»ddd"]);
 6048
 6049    cx.assert_editor_state(indoc! {"
 6050        ˇbbb
 6051        ccc
 6052
 6053        bbb
 6054        ccc
 6055        "});
 6056    cx.dispatch_action(SelectPrevious::default());
 6057    cx.assert_editor_state(indoc! {"
 6058                «bbbˇ»
 6059                ccc
 6060
 6061                bbb
 6062                ccc
 6063                "});
 6064    cx.dispatch_action(SelectPrevious::default());
 6065    cx.assert_editor_state(indoc! {"
 6066                «bbbˇ»
 6067                ccc
 6068
 6069                «bbbˇ»
 6070                ccc
 6071                "});
 6072}
 6073
 6074#[gpui::test]
 6075async fn test_select_previous_with_single_caret(cx: &mut TestAppContext) {
 6076    init_test(cx, |_| {});
 6077
 6078    let mut cx = EditorTestContext::new(cx).await;
 6079    cx.set_state("abc\nˇabc abc\ndefabc\nabc");
 6080
 6081    cx.update_editor(|e, window, cx| e.select_previous(&SelectPrevious::default(), window, cx))
 6082        .unwrap();
 6083    cx.assert_editor_state("abc\n«abcˇ» abc\ndefabc\nabc");
 6084
 6085    cx.update_editor(|e, window, cx| e.select_previous(&SelectPrevious::default(), window, cx))
 6086        .unwrap();
 6087    cx.assert_editor_state("«abcˇ»\n«abcˇ» abc\ndefabc\nabc");
 6088
 6089    cx.update_editor(|editor, window, cx| editor.undo_selection(&UndoSelection, window, cx));
 6090    cx.assert_editor_state("abc\n«abcˇ» abc\ndefabc\nabc");
 6091
 6092    cx.update_editor(|editor, window, cx| editor.redo_selection(&RedoSelection, window, cx));
 6093    cx.assert_editor_state("«abcˇ»\n«abcˇ» abc\ndefabc\nabc");
 6094
 6095    cx.update_editor(|e, window, cx| e.select_previous(&SelectPrevious::default(), window, cx))
 6096        .unwrap();
 6097    cx.assert_editor_state("«abcˇ»\n«abcˇ» abc\ndefabc\n«abcˇ»");
 6098
 6099    cx.update_editor(|e, window, cx| e.select_previous(&SelectPrevious::default(), window, cx))
 6100        .unwrap();
 6101    cx.assert_editor_state("«abcˇ»\n«abcˇ» abc\ndef«abcˇ»\n«abcˇ»");
 6102
 6103    cx.update_editor(|e, window, cx| e.select_previous(&SelectPrevious::default(), window, cx))
 6104        .unwrap();
 6105    cx.assert_editor_state("«abcˇ»\n«abcˇ» «abcˇ»\ndef«abcˇ»\n«abcˇ»");
 6106}
 6107
 6108#[gpui::test]
 6109async fn test_select_previous_empty_buffer(cx: &mut TestAppContext) {
 6110    init_test(cx, |_| {});
 6111
 6112    let mut cx = EditorTestContext::new(cx).await;
 6113    cx.set_state("");
 6114
 6115    cx.update_editor(|e, window, cx| e.select_previous(&SelectPrevious::default(), window, cx))
 6116        .unwrap();
 6117    cx.assert_editor_state("«aˇ»");
 6118    cx.update_editor(|e, window, cx| e.select_previous(&SelectPrevious::default(), window, cx))
 6119        .unwrap();
 6120    cx.assert_editor_state("«aˇ»");
 6121}
 6122
 6123#[gpui::test]
 6124async fn test_select_previous_with_multiple_carets(cx: &mut TestAppContext) {
 6125    init_test(cx, |_| {});
 6126
 6127    let mut cx = EditorTestContext::new(cx).await;
 6128    cx.set_state(
 6129        r#"let foo = 2;
 6130lˇet foo = 2;
 6131let fooˇ = 2;
 6132let foo = 2;
 6133let foo = ˇ2;"#,
 6134    );
 6135
 6136    cx.update_editor(|e, window, cx| e.select_previous(&SelectPrevious::default(), window, cx))
 6137        .unwrap();
 6138    cx.assert_editor_state(
 6139        r#"let foo = 2;
 6140«letˇ» foo = 2;
 6141let «fooˇ» = 2;
 6142let foo = 2;
 6143let foo = «2ˇ»;"#,
 6144    );
 6145
 6146    // noop for multiple selections with different contents
 6147    cx.update_editor(|e, window, cx| e.select_previous(&SelectPrevious::default(), window, cx))
 6148        .unwrap();
 6149    cx.assert_editor_state(
 6150        r#"let foo = 2;
 6151«letˇ» foo = 2;
 6152let «fooˇ» = 2;
 6153let foo = 2;
 6154let foo = «2ˇ»;"#,
 6155    );
 6156}
 6157
 6158#[gpui::test]
 6159async fn test_select_previous_with_single_selection(cx: &mut TestAppContext) {
 6160    init_test(cx, |_| {});
 6161
 6162    let mut cx = EditorTestContext::new(cx).await;
 6163    cx.set_state("abc\n«ˇabc» abc\ndefabc\nabc");
 6164
 6165    cx.update_editor(|e, window, cx| e.select_previous(&SelectPrevious::default(), window, cx))
 6166        .unwrap();
 6167    // selection direction is preserved
 6168    cx.assert_editor_state("«ˇabc»\n«ˇabc» abc\ndefabc\nabc");
 6169
 6170    cx.update_editor(|e, window, cx| e.select_previous(&SelectPrevious::default(), window, cx))
 6171        .unwrap();
 6172    cx.assert_editor_state("«ˇabc»\n«ˇabc» abc\ndefabc\n«ˇabc»");
 6173
 6174    cx.update_editor(|editor, window, cx| editor.undo_selection(&UndoSelection, window, cx));
 6175    cx.assert_editor_state("«ˇabc»\n«ˇabc» abc\ndefabc\nabc");
 6176
 6177    cx.update_editor(|editor, window, cx| editor.redo_selection(&RedoSelection, window, cx));
 6178    cx.assert_editor_state("«ˇabc»\n«ˇabc» abc\ndefabc\n«ˇabc»");
 6179
 6180    cx.update_editor(|e, window, cx| e.select_previous(&SelectPrevious::default(), window, cx))
 6181        .unwrap();
 6182    cx.assert_editor_state("«ˇabc»\n«ˇabc» abc\ndef«ˇabc»\n«ˇabc»");
 6183
 6184    cx.update_editor(|e, window, cx| e.select_previous(&SelectPrevious::default(), window, cx))
 6185        .unwrap();
 6186    cx.assert_editor_state("«ˇabc»\n«ˇabc» «ˇabc»\ndef«ˇabc»\n«ˇabc»");
 6187}
 6188
 6189#[gpui::test]
 6190async fn test_select_larger_smaller_syntax_node(cx: &mut TestAppContext) {
 6191    init_test(cx, |_| {});
 6192
 6193    let language = Arc::new(Language::new(
 6194        LanguageConfig::default(),
 6195        Some(tree_sitter_rust::LANGUAGE.into()),
 6196    ));
 6197
 6198    let text = r#"
 6199        use mod1::mod2::{mod3, mod4};
 6200
 6201        fn fn_1(param1: bool, param2: &str) {
 6202            let var1 = "text";
 6203        }
 6204    "#
 6205    .unindent();
 6206
 6207    let buffer = cx.new(|cx| Buffer::local(text, cx).with_language(language, cx));
 6208    let buffer = cx.new(|cx| MultiBuffer::singleton(buffer, cx));
 6209    let (editor, cx) = cx.add_window_view(|window, cx| build_editor(buffer, window, cx));
 6210
 6211    editor
 6212        .condition::<crate::EditorEvent>(cx, |editor, cx| !editor.buffer.read(cx).is_parsing(cx))
 6213        .await;
 6214
 6215    editor.update_in(cx, |editor, window, cx| {
 6216        editor.change_selections(None, window, cx, |s| {
 6217            s.select_display_ranges([
 6218                DisplayPoint::new(DisplayRow(0), 25)..DisplayPoint::new(DisplayRow(0), 25),
 6219                DisplayPoint::new(DisplayRow(2), 24)..DisplayPoint::new(DisplayRow(2), 12),
 6220                DisplayPoint::new(DisplayRow(3), 18)..DisplayPoint::new(DisplayRow(3), 18),
 6221            ]);
 6222        });
 6223        editor.select_larger_syntax_node(&SelectLargerSyntaxNode, window, cx);
 6224    });
 6225    editor.update(cx, |editor, cx| {
 6226        assert_text_with_selections(
 6227            editor,
 6228            indoc! {r#"
 6229                use mod1::mod2::{mod3, «mod4ˇ»};
 6230
 6231                fn fn_1«ˇ(param1: bool, param2: &str)» {
 6232                    let var1 = "«ˇtext»";
 6233                }
 6234            "#},
 6235            cx,
 6236        );
 6237    });
 6238
 6239    editor.update_in(cx, |editor, window, cx| {
 6240        editor.select_larger_syntax_node(&SelectLargerSyntaxNode, window, cx);
 6241    });
 6242    editor.update(cx, |editor, cx| {
 6243        assert_text_with_selections(
 6244            editor,
 6245            indoc! {r#"
 6246                use mod1::mod2::«{mod3, mod4}ˇ»;
 6247
 6248                «ˇfn fn_1(param1: bool, param2: &str) {
 6249                    let var1 = "text";
 6250 6251            "#},
 6252            cx,
 6253        );
 6254    });
 6255
 6256    editor.update_in(cx, |editor, window, cx| {
 6257        editor.select_larger_syntax_node(&SelectLargerSyntaxNode, window, cx);
 6258    });
 6259    assert_eq!(
 6260        editor.update(cx, |editor, cx| editor.selections.display_ranges(cx)),
 6261        &[DisplayPoint::new(DisplayRow(5), 0)..DisplayPoint::new(DisplayRow(0), 0)]
 6262    );
 6263
 6264    // Trying to expand the selected syntax node one more time has no effect.
 6265    editor.update_in(cx, |editor, window, cx| {
 6266        editor.select_larger_syntax_node(&SelectLargerSyntaxNode, window, cx);
 6267    });
 6268    assert_eq!(
 6269        editor.update(cx, |editor, cx| editor.selections.display_ranges(cx)),
 6270        &[DisplayPoint::new(DisplayRow(5), 0)..DisplayPoint::new(DisplayRow(0), 0)]
 6271    );
 6272
 6273    editor.update_in(cx, |editor, window, cx| {
 6274        editor.select_smaller_syntax_node(&SelectSmallerSyntaxNode, window, cx);
 6275    });
 6276    editor.update(cx, |editor, cx| {
 6277        assert_text_with_selections(
 6278            editor,
 6279            indoc! {r#"
 6280                use mod1::mod2::«{mod3, mod4}ˇ»;
 6281
 6282                «ˇfn fn_1(param1: bool, param2: &str) {
 6283                    let var1 = "text";
 6284 6285            "#},
 6286            cx,
 6287        );
 6288    });
 6289
 6290    editor.update_in(cx, |editor, window, cx| {
 6291        editor.select_smaller_syntax_node(&SelectSmallerSyntaxNode, window, cx);
 6292    });
 6293    editor.update(cx, |editor, cx| {
 6294        assert_text_with_selections(
 6295            editor,
 6296            indoc! {r#"
 6297                use mod1::mod2::{mod3, «mod4ˇ»};
 6298
 6299                fn fn_1«ˇ(param1: bool, param2: &str)» {
 6300                    let var1 = "«ˇtext»";
 6301                }
 6302            "#},
 6303            cx,
 6304        );
 6305    });
 6306
 6307    editor.update_in(cx, |editor, window, cx| {
 6308        editor.select_smaller_syntax_node(&SelectSmallerSyntaxNode, window, cx);
 6309    });
 6310    editor.update(cx, |editor, cx| {
 6311        assert_text_with_selections(
 6312            editor,
 6313            indoc! {r#"
 6314                use mod1::mod2::{mod3, mo«ˇ»d4};
 6315
 6316                fn fn_1(para«ˇm1: bool, pa»ram2: &str) {
 6317                    let var1 = "te«ˇ»xt";
 6318                }
 6319            "#},
 6320            cx,
 6321        );
 6322    });
 6323
 6324    // Trying to shrink the selected syntax node one more time has no effect.
 6325    editor.update_in(cx, |editor, window, cx| {
 6326        editor.select_smaller_syntax_node(&SelectSmallerSyntaxNode, window, cx);
 6327    });
 6328    editor.update_in(cx, |editor, _, cx| {
 6329        assert_text_with_selections(
 6330            editor,
 6331            indoc! {r#"
 6332                use mod1::mod2::{mod3, mo«ˇ»d4};
 6333
 6334                fn fn_1(para«ˇm1: bool, pa»ram2: &str) {
 6335                    let var1 = "te«ˇ»xt";
 6336                }
 6337            "#},
 6338            cx,
 6339        );
 6340    });
 6341
 6342    // Ensure that we keep expanding the selection if the larger selection starts or ends within
 6343    // a fold.
 6344    editor.update_in(cx, |editor, window, cx| {
 6345        editor.fold_creases(
 6346            vec![
 6347                Crease::simple(
 6348                    Point::new(0, 21)..Point::new(0, 24),
 6349                    FoldPlaceholder::test(),
 6350                ),
 6351                Crease::simple(
 6352                    Point::new(3, 20)..Point::new(3, 22),
 6353                    FoldPlaceholder::test(),
 6354                ),
 6355            ],
 6356            true,
 6357            window,
 6358            cx,
 6359        );
 6360        editor.select_larger_syntax_node(&SelectLargerSyntaxNode, window, cx);
 6361    });
 6362    editor.update(cx, |editor, cx| {
 6363        assert_text_with_selections(
 6364            editor,
 6365            indoc! {r#"
 6366                use mod1::mod2::«{mod3, mod4}ˇ»;
 6367
 6368                fn fn_1«ˇ(param1: bool, param2: &str)» {
 6369                    let var1 = "«ˇtext»";
 6370                }
 6371            "#},
 6372            cx,
 6373        );
 6374    });
 6375}
 6376
 6377#[gpui::test]
 6378async fn test_select_larger_smaller_syntax_node_for_string(cx: &mut TestAppContext) {
 6379    init_test(cx, |_| {});
 6380
 6381    let language = Arc::new(Language::new(
 6382        LanguageConfig::default(),
 6383        Some(tree_sitter_rust::LANGUAGE.into()),
 6384    ));
 6385
 6386    let text = r#"
 6387        use mod1::mod2::{mod3, mod4};
 6388
 6389        fn fn_1(param1: bool, param2: &str) {
 6390            let var1 = "hello world";
 6391        }
 6392    "#
 6393    .unindent();
 6394
 6395    let buffer = cx.new(|cx| Buffer::local(text, cx).with_language(language, cx));
 6396    let buffer = cx.new(|cx| MultiBuffer::singleton(buffer, cx));
 6397    let (editor, cx) = cx.add_window_view(|window, cx| build_editor(buffer, window, cx));
 6398
 6399    editor
 6400        .condition::<crate::EditorEvent>(cx, |editor, cx| !editor.buffer.read(cx).is_parsing(cx))
 6401        .await;
 6402
 6403    // Test 1: Cursor on a letter of a string word
 6404    editor.update_in(cx, |editor, window, cx| {
 6405        editor.change_selections(None, window, cx, |s| {
 6406            s.select_display_ranges([
 6407                DisplayPoint::new(DisplayRow(3), 17)..DisplayPoint::new(DisplayRow(3), 17)
 6408            ]);
 6409        });
 6410    });
 6411    editor.update_in(cx, |editor, window, cx| {
 6412        assert_text_with_selections(
 6413            editor,
 6414            indoc! {r#"
 6415                use mod1::mod2::{mod3, mod4};
 6416
 6417                fn fn_1(param1: bool, param2: &str) {
 6418                    let var1 = "hˇello world";
 6419                }
 6420            "#},
 6421            cx,
 6422        );
 6423        editor.select_larger_syntax_node(&SelectLargerSyntaxNode, window, cx);
 6424        assert_text_with_selections(
 6425            editor,
 6426            indoc! {r#"
 6427                use mod1::mod2::{mod3, mod4};
 6428
 6429                fn fn_1(param1: bool, param2: &str) {
 6430                    let var1 = "«ˇhello» world";
 6431                }
 6432            "#},
 6433            cx,
 6434        );
 6435    });
 6436
 6437    // Test 2: Partial selection within a word
 6438    editor.update_in(cx, |editor, window, cx| {
 6439        editor.change_selections(None, window, cx, |s| {
 6440            s.select_display_ranges([
 6441                DisplayPoint::new(DisplayRow(3), 17)..DisplayPoint::new(DisplayRow(3), 19)
 6442            ]);
 6443        });
 6444    });
 6445    editor.update_in(cx, |editor, window, cx| {
 6446        assert_text_with_selections(
 6447            editor,
 6448            indoc! {r#"
 6449                use mod1::mod2::{mod3, mod4};
 6450
 6451                fn fn_1(param1: bool, param2: &str) {
 6452                    let var1 = "h«elˇ»lo world";
 6453                }
 6454            "#},
 6455            cx,
 6456        );
 6457        editor.select_larger_syntax_node(&SelectLargerSyntaxNode, window, cx);
 6458        assert_text_with_selections(
 6459            editor,
 6460            indoc! {r#"
 6461                use mod1::mod2::{mod3, mod4};
 6462
 6463                fn fn_1(param1: bool, param2: &str) {
 6464                    let var1 = "«ˇhello» world";
 6465                }
 6466            "#},
 6467            cx,
 6468        );
 6469    });
 6470
 6471    // Test 3: Complete word already selected
 6472    editor.update_in(cx, |editor, window, cx| {
 6473        editor.change_selections(None, window, cx, |s| {
 6474            s.select_display_ranges([
 6475                DisplayPoint::new(DisplayRow(3), 16)..DisplayPoint::new(DisplayRow(3), 21)
 6476            ]);
 6477        });
 6478    });
 6479    editor.update_in(cx, |editor, window, cx| {
 6480        assert_text_with_selections(
 6481            editor,
 6482            indoc! {r#"
 6483                use mod1::mod2::{mod3, mod4};
 6484
 6485                fn fn_1(param1: bool, param2: &str) {
 6486                    let var1 = "«helloˇ» world";
 6487                }
 6488            "#},
 6489            cx,
 6490        );
 6491        editor.select_larger_syntax_node(&SelectLargerSyntaxNode, window, cx);
 6492        assert_text_with_selections(
 6493            editor,
 6494            indoc! {r#"
 6495                use mod1::mod2::{mod3, mod4};
 6496
 6497                fn fn_1(param1: bool, param2: &str) {
 6498                    let var1 = "«hello worldˇ»";
 6499                }
 6500            "#},
 6501            cx,
 6502        );
 6503    });
 6504
 6505    // Test 4: Selection spanning across words
 6506    editor.update_in(cx, |editor, window, cx| {
 6507        editor.change_selections(None, window, cx, |s| {
 6508            s.select_display_ranges([
 6509                DisplayPoint::new(DisplayRow(3), 19)..DisplayPoint::new(DisplayRow(3), 24)
 6510            ]);
 6511        });
 6512    });
 6513    editor.update_in(cx, |editor, window, cx| {
 6514        assert_text_with_selections(
 6515            editor,
 6516            indoc! {r#"
 6517                use mod1::mod2::{mod3, mod4};
 6518
 6519                fn fn_1(param1: bool, param2: &str) {
 6520                    let var1 = "hel«lo woˇ»rld";
 6521                }
 6522            "#},
 6523            cx,
 6524        );
 6525        editor.select_larger_syntax_node(&SelectLargerSyntaxNode, window, cx);
 6526        assert_text_with_selections(
 6527            editor,
 6528            indoc! {r#"
 6529                use mod1::mod2::{mod3, mod4};
 6530
 6531                fn fn_1(param1: bool, param2: &str) {
 6532                    let var1 = "«ˇhello world»";
 6533                }
 6534            "#},
 6535            cx,
 6536        );
 6537    });
 6538
 6539    // Test 5: Expansion beyond string
 6540    editor.update_in(cx, |editor, window, cx| {
 6541        editor.select_larger_syntax_node(&SelectLargerSyntaxNode, window, cx);
 6542        editor.select_larger_syntax_node(&SelectLargerSyntaxNode, window, cx);
 6543        assert_text_with_selections(
 6544            editor,
 6545            indoc! {r#"
 6546                use mod1::mod2::{mod3, mod4};
 6547
 6548                fn fn_1(param1: bool, param2: &str) {
 6549                    «ˇlet var1 = "hello world";»
 6550                }
 6551            "#},
 6552            cx,
 6553        );
 6554    });
 6555}
 6556
 6557#[gpui::test]
 6558async fn test_fold_function_bodies(cx: &mut TestAppContext) {
 6559    init_test(cx, |_| {});
 6560
 6561    let base_text = r#"
 6562        impl A {
 6563            // this is an uncommitted comment
 6564
 6565            fn b() {
 6566                c();
 6567            }
 6568
 6569            // this is another uncommitted comment
 6570
 6571            fn d() {
 6572                // e
 6573                // f
 6574            }
 6575        }
 6576
 6577        fn g() {
 6578            // h
 6579        }
 6580    "#
 6581    .unindent();
 6582
 6583    let text = r#"
 6584        ˇimpl A {
 6585
 6586            fn b() {
 6587                c();
 6588            }
 6589
 6590            fn d() {
 6591                // e
 6592                // f
 6593            }
 6594        }
 6595
 6596        fn g() {
 6597            // h
 6598        }
 6599    "#
 6600    .unindent();
 6601
 6602    let mut cx = EditorLspTestContext::new_rust(Default::default(), cx).await;
 6603    cx.set_state(&text);
 6604    cx.set_head_text(&base_text);
 6605    cx.update_editor(|editor, window, cx| {
 6606        editor.expand_all_diff_hunks(&Default::default(), window, cx);
 6607    });
 6608
 6609    cx.assert_state_with_diff(
 6610        "
 6611        ˇimpl A {
 6612      -     // this is an uncommitted comment
 6613
 6614            fn b() {
 6615                c();
 6616            }
 6617
 6618      -     // this is another uncommitted comment
 6619      -
 6620            fn d() {
 6621                // e
 6622                // f
 6623            }
 6624        }
 6625
 6626        fn g() {
 6627            // h
 6628        }
 6629    "
 6630        .unindent(),
 6631    );
 6632
 6633    let expected_display_text = "
 6634        impl A {
 6635            // this is an uncommitted comment
 6636
 6637            fn b() {
 6638 6639            }
 6640
 6641            // this is another uncommitted comment
 6642
 6643            fn d() {
 6644 6645            }
 6646        }
 6647
 6648        fn g() {
 6649 6650        }
 6651        "
 6652    .unindent();
 6653
 6654    cx.update_editor(|editor, window, cx| {
 6655        editor.fold_function_bodies(&FoldFunctionBodies, window, cx);
 6656        assert_eq!(editor.display_text(cx), expected_display_text);
 6657    });
 6658}
 6659
 6660#[gpui::test]
 6661async fn test_autoindent(cx: &mut TestAppContext) {
 6662    init_test(cx, |_| {});
 6663
 6664    let language = Arc::new(
 6665        Language::new(
 6666            LanguageConfig {
 6667                brackets: BracketPairConfig {
 6668                    pairs: vec![
 6669                        BracketPair {
 6670                            start: "{".to_string(),
 6671                            end: "}".to_string(),
 6672                            close: false,
 6673                            surround: false,
 6674                            newline: true,
 6675                        },
 6676                        BracketPair {
 6677                            start: "(".to_string(),
 6678                            end: ")".to_string(),
 6679                            close: false,
 6680                            surround: false,
 6681                            newline: true,
 6682                        },
 6683                    ],
 6684                    ..Default::default()
 6685                },
 6686                ..Default::default()
 6687            },
 6688            Some(tree_sitter_rust::LANGUAGE.into()),
 6689        )
 6690        .with_indents_query(
 6691            r#"
 6692                (_ "(" ")" @end) @indent
 6693                (_ "{" "}" @end) @indent
 6694            "#,
 6695        )
 6696        .unwrap(),
 6697    );
 6698
 6699    let text = "fn a() {}";
 6700
 6701    let buffer = cx.new(|cx| Buffer::local(text, cx).with_language(language, cx));
 6702    let buffer = cx.new(|cx| MultiBuffer::singleton(buffer, cx));
 6703    let (editor, cx) = cx.add_window_view(|window, cx| build_editor(buffer, window, cx));
 6704    editor
 6705        .condition::<crate::EditorEvent>(cx, |editor, cx| !editor.buffer.read(cx).is_parsing(cx))
 6706        .await;
 6707
 6708    editor.update_in(cx, |editor, window, cx| {
 6709        editor.change_selections(None, window, cx, |s| s.select_ranges([5..5, 8..8, 9..9]));
 6710        editor.newline(&Newline, window, cx);
 6711        assert_eq!(editor.text(cx), "fn a(\n    \n) {\n    \n}\n");
 6712        assert_eq!(
 6713            editor.selections.ranges(cx),
 6714            &[
 6715                Point::new(1, 4)..Point::new(1, 4),
 6716                Point::new(3, 4)..Point::new(3, 4),
 6717                Point::new(5, 0)..Point::new(5, 0)
 6718            ]
 6719        );
 6720    });
 6721}
 6722
 6723#[gpui::test]
 6724async fn test_autoindent_selections(cx: &mut TestAppContext) {
 6725    init_test(cx, |_| {});
 6726
 6727    {
 6728        let mut cx = EditorLspTestContext::new_rust(Default::default(), cx).await;
 6729        cx.set_state(indoc! {"
 6730            impl A {
 6731
 6732                fn b() {}
 6733
 6734            «fn c() {
 6735
 6736            }ˇ»
 6737            }
 6738        "});
 6739
 6740        cx.update_editor(|editor, window, cx| {
 6741            editor.autoindent(&Default::default(), window, cx);
 6742        });
 6743
 6744        cx.assert_editor_state(indoc! {"
 6745            impl A {
 6746
 6747                fn b() {}
 6748
 6749                «fn c() {
 6750
 6751                }ˇ»
 6752            }
 6753        "});
 6754    }
 6755
 6756    {
 6757        let mut cx = EditorTestContext::new_multibuffer(
 6758            cx,
 6759            [indoc! { "
 6760                impl A {
 6761                «
 6762                // a
 6763                fn b(){}
 6764                »
 6765                «
 6766                    }
 6767                    fn c(){}
 6768                »
 6769            "}],
 6770        );
 6771
 6772        let buffer = cx.update_editor(|editor, _, cx| {
 6773            let buffer = editor.buffer().update(cx, |buffer, _| {
 6774                buffer.all_buffers().iter().next().unwrap().clone()
 6775            });
 6776            buffer.update(cx, |buffer, cx| buffer.set_language(Some(rust_lang()), cx));
 6777            buffer
 6778        });
 6779
 6780        cx.run_until_parked();
 6781        cx.update_editor(|editor, window, cx| {
 6782            editor.select_all(&Default::default(), window, cx);
 6783            editor.autoindent(&Default::default(), window, cx)
 6784        });
 6785        cx.run_until_parked();
 6786
 6787        cx.update(|_, cx| {
 6788            assert_eq!(
 6789                buffer.read(cx).text(),
 6790                indoc! { "
 6791                    impl A {
 6792
 6793                        // a
 6794                        fn b(){}
 6795
 6796
 6797                    }
 6798                    fn c(){}
 6799
 6800                " }
 6801            )
 6802        });
 6803    }
 6804}
 6805
 6806#[gpui::test]
 6807async fn test_autoclose_and_auto_surround_pairs(cx: &mut TestAppContext) {
 6808    init_test(cx, |_| {});
 6809
 6810    let mut cx = EditorTestContext::new(cx).await;
 6811
 6812    let language = Arc::new(Language::new(
 6813        LanguageConfig {
 6814            brackets: BracketPairConfig {
 6815                pairs: vec![
 6816                    BracketPair {
 6817                        start: "{".to_string(),
 6818                        end: "}".to_string(),
 6819                        close: true,
 6820                        surround: true,
 6821                        newline: true,
 6822                    },
 6823                    BracketPair {
 6824                        start: "(".to_string(),
 6825                        end: ")".to_string(),
 6826                        close: true,
 6827                        surround: true,
 6828                        newline: true,
 6829                    },
 6830                    BracketPair {
 6831                        start: "/*".to_string(),
 6832                        end: " */".to_string(),
 6833                        close: true,
 6834                        surround: true,
 6835                        newline: true,
 6836                    },
 6837                    BracketPair {
 6838                        start: "[".to_string(),
 6839                        end: "]".to_string(),
 6840                        close: false,
 6841                        surround: false,
 6842                        newline: true,
 6843                    },
 6844                    BracketPair {
 6845                        start: "\"".to_string(),
 6846                        end: "\"".to_string(),
 6847                        close: true,
 6848                        surround: true,
 6849                        newline: false,
 6850                    },
 6851                    BracketPair {
 6852                        start: "<".to_string(),
 6853                        end: ">".to_string(),
 6854                        close: false,
 6855                        surround: true,
 6856                        newline: true,
 6857                    },
 6858                ],
 6859                ..Default::default()
 6860            },
 6861            autoclose_before: "})]".to_string(),
 6862            ..Default::default()
 6863        },
 6864        Some(tree_sitter_rust::LANGUAGE.into()),
 6865    ));
 6866
 6867    cx.language_registry().add(language.clone());
 6868    cx.update_buffer(|buffer, cx| {
 6869        buffer.set_language(Some(language), cx);
 6870    });
 6871
 6872    cx.set_state(
 6873        &r#"
 6874            🏀ˇ
 6875            εˇ
 6876            ❤️ˇ
 6877        "#
 6878        .unindent(),
 6879    );
 6880
 6881    // autoclose multiple nested brackets at multiple cursors
 6882    cx.update_editor(|editor, window, cx| {
 6883        editor.handle_input("{", window, cx);
 6884        editor.handle_input("{", window, cx);
 6885        editor.handle_input("{", window, cx);
 6886    });
 6887    cx.assert_editor_state(
 6888        &"
 6889            🏀{{{ˇ}}}
 6890            ε{{{ˇ}}}
 6891            ❤️{{{ˇ}}}
 6892        "
 6893        .unindent(),
 6894    );
 6895
 6896    // insert a different closing bracket
 6897    cx.update_editor(|editor, window, cx| {
 6898        editor.handle_input(")", window, cx);
 6899    });
 6900    cx.assert_editor_state(
 6901        &"
 6902            🏀{{{)ˇ}}}
 6903            ε{{{)ˇ}}}
 6904            ❤️{{{)ˇ}}}
 6905        "
 6906        .unindent(),
 6907    );
 6908
 6909    // skip over the auto-closed brackets when typing a closing bracket
 6910    cx.update_editor(|editor, window, cx| {
 6911        editor.move_right(&MoveRight, window, cx);
 6912        editor.handle_input("}", window, cx);
 6913        editor.handle_input("}", window, cx);
 6914        editor.handle_input("}", window, cx);
 6915    });
 6916    cx.assert_editor_state(
 6917        &"
 6918            🏀{{{)}}}}ˇ
 6919            ε{{{)}}}}ˇ
 6920            ❤️{{{)}}}}ˇ
 6921        "
 6922        .unindent(),
 6923    );
 6924
 6925    // autoclose multi-character pairs
 6926    cx.set_state(
 6927        &"
 6928            ˇ
 6929            ˇ
 6930        "
 6931        .unindent(),
 6932    );
 6933    cx.update_editor(|editor, window, cx| {
 6934        editor.handle_input("/", window, cx);
 6935        editor.handle_input("*", window, cx);
 6936    });
 6937    cx.assert_editor_state(
 6938        &"
 6939            /*ˇ */
 6940            /*ˇ */
 6941        "
 6942        .unindent(),
 6943    );
 6944
 6945    // one cursor autocloses a multi-character pair, one cursor
 6946    // does not autoclose.
 6947    cx.set_state(
 6948        &"
 6949 6950            ˇ
 6951        "
 6952        .unindent(),
 6953    );
 6954    cx.update_editor(|editor, window, cx| editor.handle_input("*", window, cx));
 6955    cx.assert_editor_state(
 6956        &"
 6957            /*ˇ */
 6958 6959        "
 6960        .unindent(),
 6961    );
 6962
 6963    // Don't autoclose if the next character isn't whitespace and isn't
 6964    // listed in the language's "autoclose_before" section.
 6965    cx.set_state("ˇa b");
 6966    cx.update_editor(|editor, window, cx| editor.handle_input("{", window, cx));
 6967    cx.assert_editor_state("{ˇa b");
 6968
 6969    // Don't autoclose if `close` is false for the bracket pair
 6970    cx.set_state("ˇ");
 6971    cx.update_editor(|editor, window, cx| editor.handle_input("[", window, cx));
 6972    cx.assert_editor_state("");
 6973
 6974    // Surround with brackets if text is selected
 6975    cx.set_state("«aˇ» b");
 6976    cx.update_editor(|editor, window, cx| editor.handle_input("{", window, cx));
 6977    cx.assert_editor_state("{«aˇ»} b");
 6978
 6979    // Autoclose when not immediately after a word character
 6980    cx.set_state("a ˇ");
 6981    cx.update_editor(|editor, window, cx| editor.handle_input("\"", window, cx));
 6982    cx.assert_editor_state("a \"ˇ\"");
 6983
 6984    // Autoclose pair where the start and end characters are the same
 6985    cx.update_editor(|editor, window, cx| editor.handle_input("\"", window, cx));
 6986    cx.assert_editor_state("a \"\"ˇ");
 6987
 6988    // Don't autoclose when immediately after a word character
 6989    cx.set_state("");
 6990    cx.update_editor(|editor, window, cx| editor.handle_input("\"", window, cx));
 6991    cx.assert_editor_state("a\"ˇ");
 6992
 6993    // Do autoclose when after a non-word character
 6994    cx.set_state("");
 6995    cx.update_editor(|editor, window, cx| editor.handle_input("\"", window, cx));
 6996    cx.assert_editor_state("{\"ˇ\"");
 6997
 6998    // Non identical pairs autoclose regardless of preceding character
 6999    cx.set_state("");
 7000    cx.update_editor(|editor, window, cx| editor.handle_input("{", window, cx));
 7001    cx.assert_editor_state("a{ˇ}");
 7002
 7003    // Don't autoclose pair if autoclose is disabled
 7004    cx.set_state("ˇ");
 7005    cx.update_editor(|editor, window, cx| editor.handle_input("<", window, cx));
 7006    cx.assert_editor_state("");
 7007
 7008    // Surround with brackets if text is selected and auto_surround is enabled, even if autoclose is disabled
 7009    cx.set_state("«aˇ» b");
 7010    cx.update_editor(|editor, window, cx| editor.handle_input("<", window, cx));
 7011    cx.assert_editor_state("<«aˇ»> b");
 7012}
 7013
 7014#[gpui::test]
 7015async fn test_always_treat_brackets_as_autoclosed_skip_over(cx: &mut TestAppContext) {
 7016    init_test(cx, |settings| {
 7017        settings.defaults.always_treat_brackets_as_autoclosed = Some(true);
 7018    });
 7019
 7020    let mut cx = EditorTestContext::new(cx).await;
 7021
 7022    let language = Arc::new(Language::new(
 7023        LanguageConfig {
 7024            brackets: BracketPairConfig {
 7025                pairs: vec![
 7026                    BracketPair {
 7027                        start: "{".to_string(),
 7028                        end: "}".to_string(),
 7029                        close: true,
 7030                        surround: true,
 7031                        newline: true,
 7032                    },
 7033                    BracketPair {
 7034                        start: "(".to_string(),
 7035                        end: ")".to_string(),
 7036                        close: true,
 7037                        surround: true,
 7038                        newline: true,
 7039                    },
 7040                    BracketPair {
 7041                        start: "[".to_string(),
 7042                        end: "]".to_string(),
 7043                        close: false,
 7044                        surround: false,
 7045                        newline: true,
 7046                    },
 7047                ],
 7048                ..Default::default()
 7049            },
 7050            autoclose_before: "})]".to_string(),
 7051            ..Default::default()
 7052        },
 7053        Some(tree_sitter_rust::LANGUAGE.into()),
 7054    ));
 7055
 7056    cx.language_registry().add(language.clone());
 7057    cx.update_buffer(|buffer, cx| {
 7058        buffer.set_language(Some(language), cx);
 7059    });
 7060
 7061    cx.set_state(
 7062        &"
 7063            ˇ
 7064            ˇ
 7065            ˇ
 7066        "
 7067        .unindent(),
 7068    );
 7069
 7070    // ensure only matching closing brackets are skipped over
 7071    cx.update_editor(|editor, window, cx| {
 7072        editor.handle_input("}", window, cx);
 7073        editor.move_left(&MoveLeft, window, cx);
 7074        editor.handle_input(")", window, cx);
 7075        editor.move_left(&MoveLeft, window, cx);
 7076    });
 7077    cx.assert_editor_state(
 7078        &"
 7079            ˇ)}
 7080            ˇ)}
 7081            ˇ)}
 7082        "
 7083        .unindent(),
 7084    );
 7085
 7086    // skip-over closing brackets at multiple cursors
 7087    cx.update_editor(|editor, window, cx| {
 7088        editor.handle_input(")", window, cx);
 7089        editor.handle_input("}", window, cx);
 7090    });
 7091    cx.assert_editor_state(
 7092        &"
 7093            )}ˇ
 7094            )}ˇ
 7095            )}ˇ
 7096        "
 7097        .unindent(),
 7098    );
 7099
 7100    // ignore non-close brackets
 7101    cx.update_editor(|editor, window, cx| {
 7102        editor.handle_input("]", window, cx);
 7103        editor.move_left(&MoveLeft, window, cx);
 7104        editor.handle_input("]", window, cx);
 7105    });
 7106    cx.assert_editor_state(
 7107        &"
 7108            )}]ˇ]
 7109            )}]ˇ]
 7110            )}]ˇ]
 7111        "
 7112        .unindent(),
 7113    );
 7114}
 7115
 7116#[gpui::test]
 7117async fn test_autoclose_with_embedded_language(cx: &mut TestAppContext) {
 7118    init_test(cx, |_| {});
 7119
 7120    let mut cx = EditorTestContext::new(cx).await;
 7121
 7122    let html_language = Arc::new(
 7123        Language::new(
 7124            LanguageConfig {
 7125                name: "HTML".into(),
 7126                brackets: BracketPairConfig {
 7127                    pairs: vec![
 7128                        BracketPair {
 7129                            start: "<".into(),
 7130                            end: ">".into(),
 7131                            close: true,
 7132                            ..Default::default()
 7133                        },
 7134                        BracketPair {
 7135                            start: "{".into(),
 7136                            end: "}".into(),
 7137                            close: true,
 7138                            ..Default::default()
 7139                        },
 7140                        BracketPair {
 7141                            start: "(".into(),
 7142                            end: ")".into(),
 7143                            close: true,
 7144                            ..Default::default()
 7145                        },
 7146                    ],
 7147                    ..Default::default()
 7148                },
 7149                autoclose_before: "})]>".into(),
 7150                ..Default::default()
 7151            },
 7152            Some(tree_sitter_html::LANGUAGE.into()),
 7153        )
 7154        .with_injection_query(
 7155            r#"
 7156            (script_element
 7157                (raw_text) @injection.content
 7158                (#set! injection.language "javascript"))
 7159            "#,
 7160        )
 7161        .unwrap(),
 7162    );
 7163
 7164    let javascript_language = Arc::new(Language::new(
 7165        LanguageConfig {
 7166            name: "JavaScript".into(),
 7167            brackets: BracketPairConfig {
 7168                pairs: vec![
 7169                    BracketPair {
 7170                        start: "/*".into(),
 7171                        end: " */".into(),
 7172                        close: true,
 7173                        ..Default::default()
 7174                    },
 7175                    BracketPair {
 7176                        start: "{".into(),
 7177                        end: "}".into(),
 7178                        close: true,
 7179                        ..Default::default()
 7180                    },
 7181                    BracketPair {
 7182                        start: "(".into(),
 7183                        end: ")".into(),
 7184                        close: true,
 7185                        ..Default::default()
 7186                    },
 7187                ],
 7188                ..Default::default()
 7189            },
 7190            autoclose_before: "})]>".into(),
 7191            ..Default::default()
 7192        },
 7193        Some(tree_sitter_typescript::LANGUAGE_TSX.into()),
 7194    ));
 7195
 7196    cx.language_registry().add(html_language.clone());
 7197    cx.language_registry().add(javascript_language.clone());
 7198
 7199    cx.update_buffer(|buffer, cx| {
 7200        buffer.set_language(Some(html_language), cx);
 7201    });
 7202
 7203    cx.set_state(
 7204        &r#"
 7205            <body>ˇ
 7206                <script>
 7207                    var x = 1;ˇ
 7208                </script>
 7209            </body>ˇ
 7210        "#
 7211        .unindent(),
 7212    );
 7213
 7214    // Precondition: different languages are active at different locations.
 7215    cx.update_editor(|editor, window, cx| {
 7216        let snapshot = editor.snapshot(window, cx);
 7217        let cursors = editor.selections.ranges::<usize>(cx);
 7218        let languages = cursors
 7219            .iter()
 7220            .map(|c| snapshot.language_at(c.start).unwrap().name())
 7221            .collect::<Vec<_>>();
 7222        assert_eq!(
 7223            languages,
 7224            &["HTML".into(), "JavaScript".into(), "HTML".into()]
 7225        );
 7226    });
 7227
 7228    // Angle brackets autoclose in HTML, but not JavaScript.
 7229    cx.update_editor(|editor, window, cx| {
 7230        editor.handle_input("<", window, cx);
 7231        editor.handle_input("a", window, cx);
 7232    });
 7233    cx.assert_editor_state(
 7234        &r#"
 7235            <body><aˇ>
 7236                <script>
 7237                    var x = 1;<aˇ
 7238                </script>
 7239            </body><aˇ>
 7240        "#
 7241        .unindent(),
 7242    );
 7243
 7244    // Curly braces and parens autoclose in both HTML and JavaScript.
 7245    cx.update_editor(|editor, window, cx| {
 7246        editor.handle_input(" b=", window, cx);
 7247        editor.handle_input("{", window, cx);
 7248        editor.handle_input("c", window, cx);
 7249        editor.handle_input("(", window, cx);
 7250    });
 7251    cx.assert_editor_state(
 7252        &r#"
 7253            <body><a b={c(ˇ)}>
 7254                <script>
 7255                    var x = 1;<a b={c(ˇ)}
 7256                </script>
 7257            </body><a b={c(ˇ)}>
 7258        "#
 7259        .unindent(),
 7260    );
 7261
 7262    // Brackets that were already autoclosed are skipped.
 7263    cx.update_editor(|editor, window, cx| {
 7264        editor.handle_input(")", window, cx);
 7265        editor.handle_input("d", window, cx);
 7266        editor.handle_input("}", window, cx);
 7267    });
 7268    cx.assert_editor_state(
 7269        &r#"
 7270            <body><a b={c()d}ˇ>
 7271                <script>
 7272                    var x = 1;<a b={c()d}ˇ
 7273                </script>
 7274            </body><a b={c()d}ˇ>
 7275        "#
 7276        .unindent(),
 7277    );
 7278    cx.update_editor(|editor, window, cx| {
 7279        editor.handle_input(">", window, cx);
 7280    });
 7281    cx.assert_editor_state(
 7282        &r#"
 7283            <body><a b={c()d}>ˇ
 7284                <script>
 7285                    var x = 1;<a b={c()d}>ˇ
 7286                </script>
 7287            </body><a b={c()d}>ˇ
 7288        "#
 7289        .unindent(),
 7290    );
 7291
 7292    // Reset
 7293    cx.set_state(
 7294        &r#"
 7295            <body>ˇ
 7296                <script>
 7297                    var x = 1;ˇ
 7298                </script>
 7299            </body>ˇ
 7300        "#
 7301        .unindent(),
 7302    );
 7303
 7304    cx.update_editor(|editor, window, cx| {
 7305        editor.handle_input("<", window, cx);
 7306    });
 7307    cx.assert_editor_state(
 7308        &r#"
 7309            <body><ˇ>
 7310                <script>
 7311                    var x = 1;<ˇ
 7312                </script>
 7313            </body><ˇ>
 7314        "#
 7315        .unindent(),
 7316    );
 7317
 7318    // When backspacing, the closing angle brackets are removed.
 7319    cx.update_editor(|editor, window, cx| {
 7320        editor.backspace(&Backspace, window, cx);
 7321    });
 7322    cx.assert_editor_state(
 7323        &r#"
 7324            <body>ˇ
 7325                <script>
 7326                    var x = 1;ˇ
 7327                </script>
 7328            </body>ˇ
 7329        "#
 7330        .unindent(),
 7331    );
 7332
 7333    // Block comments autoclose in JavaScript, but not HTML.
 7334    cx.update_editor(|editor, window, cx| {
 7335        editor.handle_input("/", window, cx);
 7336        editor.handle_input("*", window, cx);
 7337    });
 7338    cx.assert_editor_state(
 7339        &r#"
 7340            <body>/*ˇ
 7341                <script>
 7342                    var x = 1;/*ˇ */
 7343                </script>
 7344            </body>/*ˇ
 7345        "#
 7346        .unindent(),
 7347    );
 7348}
 7349
 7350#[gpui::test]
 7351async fn test_autoclose_with_overrides(cx: &mut TestAppContext) {
 7352    init_test(cx, |_| {});
 7353
 7354    let mut cx = EditorTestContext::new(cx).await;
 7355
 7356    let rust_language = Arc::new(
 7357        Language::new(
 7358            LanguageConfig {
 7359                name: "Rust".into(),
 7360                brackets: serde_json::from_value(json!([
 7361                    { "start": "{", "end": "}", "close": true, "newline": true },
 7362                    { "start": "\"", "end": "\"", "close": true, "newline": false, "not_in": ["string"] },
 7363                ]))
 7364                .unwrap(),
 7365                autoclose_before: "})]>".into(),
 7366                ..Default::default()
 7367            },
 7368            Some(tree_sitter_rust::LANGUAGE.into()),
 7369        )
 7370        .with_override_query("(string_literal) @string")
 7371        .unwrap(),
 7372    );
 7373
 7374    cx.language_registry().add(rust_language.clone());
 7375    cx.update_buffer(|buffer, cx| {
 7376        buffer.set_language(Some(rust_language), cx);
 7377    });
 7378
 7379    cx.set_state(
 7380        &r#"
 7381            let x = ˇ
 7382        "#
 7383        .unindent(),
 7384    );
 7385
 7386    // Inserting a quotation mark. A closing quotation mark is automatically inserted.
 7387    cx.update_editor(|editor, window, cx| {
 7388        editor.handle_input("\"", window, cx);
 7389    });
 7390    cx.assert_editor_state(
 7391        &r#"
 7392            let x = "ˇ"
 7393        "#
 7394        .unindent(),
 7395    );
 7396
 7397    // Inserting another quotation mark. The cursor moves across the existing
 7398    // automatically-inserted quotation mark.
 7399    cx.update_editor(|editor, window, cx| {
 7400        editor.handle_input("\"", window, cx);
 7401    });
 7402    cx.assert_editor_state(
 7403        &r#"
 7404            let x = ""ˇ
 7405        "#
 7406        .unindent(),
 7407    );
 7408
 7409    // Reset
 7410    cx.set_state(
 7411        &r#"
 7412            let x = ˇ
 7413        "#
 7414        .unindent(),
 7415    );
 7416
 7417    // Inserting a quotation mark inside of a string. A second quotation mark is not inserted.
 7418    cx.update_editor(|editor, window, cx| {
 7419        editor.handle_input("\"", window, cx);
 7420        editor.handle_input(" ", window, cx);
 7421        editor.move_left(&Default::default(), window, cx);
 7422        editor.handle_input("\\", window, cx);
 7423        editor.handle_input("\"", window, cx);
 7424    });
 7425    cx.assert_editor_state(
 7426        &r#"
 7427            let x = "\"ˇ "
 7428        "#
 7429        .unindent(),
 7430    );
 7431
 7432    // Inserting a closing quotation mark at the position of an automatically-inserted quotation
 7433    // mark. Nothing is inserted.
 7434    cx.update_editor(|editor, window, cx| {
 7435        editor.move_right(&Default::default(), window, cx);
 7436        editor.handle_input("\"", window, cx);
 7437    });
 7438    cx.assert_editor_state(
 7439        &r#"
 7440            let x = "\" "ˇ
 7441        "#
 7442        .unindent(),
 7443    );
 7444}
 7445
 7446#[gpui::test]
 7447async fn test_surround_with_pair(cx: &mut TestAppContext) {
 7448    init_test(cx, |_| {});
 7449
 7450    let language = Arc::new(Language::new(
 7451        LanguageConfig {
 7452            brackets: BracketPairConfig {
 7453                pairs: vec![
 7454                    BracketPair {
 7455                        start: "{".to_string(),
 7456                        end: "}".to_string(),
 7457                        close: true,
 7458                        surround: true,
 7459                        newline: true,
 7460                    },
 7461                    BracketPair {
 7462                        start: "/* ".to_string(),
 7463                        end: "*/".to_string(),
 7464                        close: true,
 7465                        surround: true,
 7466                        ..Default::default()
 7467                    },
 7468                ],
 7469                ..Default::default()
 7470            },
 7471            ..Default::default()
 7472        },
 7473        Some(tree_sitter_rust::LANGUAGE.into()),
 7474    ));
 7475
 7476    let text = r#"
 7477        a
 7478        b
 7479        c
 7480    "#
 7481    .unindent();
 7482
 7483    let buffer = cx.new(|cx| Buffer::local(text, cx).with_language(language, cx));
 7484    let buffer = cx.new(|cx| MultiBuffer::singleton(buffer, cx));
 7485    let (editor, cx) = cx.add_window_view(|window, cx| build_editor(buffer, window, cx));
 7486    editor
 7487        .condition::<crate::EditorEvent>(cx, |editor, cx| !editor.buffer.read(cx).is_parsing(cx))
 7488        .await;
 7489
 7490    editor.update_in(cx, |editor, window, cx| {
 7491        editor.change_selections(None, window, cx, |s| {
 7492            s.select_display_ranges([
 7493                DisplayPoint::new(DisplayRow(0), 0)..DisplayPoint::new(DisplayRow(0), 1),
 7494                DisplayPoint::new(DisplayRow(1), 0)..DisplayPoint::new(DisplayRow(1), 1),
 7495                DisplayPoint::new(DisplayRow(2), 0)..DisplayPoint::new(DisplayRow(2), 1),
 7496            ])
 7497        });
 7498
 7499        editor.handle_input("{", window, cx);
 7500        editor.handle_input("{", window, cx);
 7501        editor.handle_input("{", window, cx);
 7502        assert_eq!(
 7503            editor.text(cx),
 7504            "
 7505                {{{a}}}
 7506                {{{b}}}
 7507                {{{c}}}
 7508            "
 7509            .unindent()
 7510        );
 7511        assert_eq!(
 7512            editor.selections.display_ranges(cx),
 7513            [
 7514                DisplayPoint::new(DisplayRow(0), 3)..DisplayPoint::new(DisplayRow(0), 4),
 7515                DisplayPoint::new(DisplayRow(1), 3)..DisplayPoint::new(DisplayRow(1), 4),
 7516                DisplayPoint::new(DisplayRow(2), 3)..DisplayPoint::new(DisplayRow(2), 4)
 7517            ]
 7518        );
 7519
 7520        editor.undo(&Undo, window, cx);
 7521        editor.undo(&Undo, window, cx);
 7522        editor.undo(&Undo, window, cx);
 7523        assert_eq!(
 7524            editor.text(cx),
 7525            "
 7526                a
 7527                b
 7528                c
 7529            "
 7530            .unindent()
 7531        );
 7532        assert_eq!(
 7533            editor.selections.display_ranges(cx),
 7534            [
 7535                DisplayPoint::new(DisplayRow(0), 0)..DisplayPoint::new(DisplayRow(0), 1),
 7536                DisplayPoint::new(DisplayRow(1), 0)..DisplayPoint::new(DisplayRow(1), 1),
 7537                DisplayPoint::new(DisplayRow(2), 0)..DisplayPoint::new(DisplayRow(2), 1)
 7538            ]
 7539        );
 7540
 7541        // Ensure inserting the first character of a multi-byte bracket pair
 7542        // doesn't surround the selections with the bracket.
 7543        editor.handle_input("/", window, cx);
 7544        assert_eq!(
 7545            editor.text(cx),
 7546            "
 7547                /
 7548                /
 7549                /
 7550            "
 7551            .unindent()
 7552        );
 7553        assert_eq!(
 7554            editor.selections.display_ranges(cx),
 7555            [
 7556                DisplayPoint::new(DisplayRow(0), 1)..DisplayPoint::new(DisplayRow(0), 1),
 7557                DisplayPoint::new(DisplayRow(1), 1)..DisplayPoint::new(DisplayRow(1), 1),
 7558                DisplayPoint::new(DisplayRow(2), 1)..DisplayPoint::new(DisplayRow(2), 1)
 7559            ]
 7560        );
 7561
 7562        editor.undo(&Undo, window, cx);
 7563        assert_eq!(
 7564            editor.text(cx),
 7565            "
 7566                a
 7567                b
 7568                c
 7569            "
 7570            .unindent()
 7571        );
 7572        assert_eq!(
 7573            editor.selections.display_ranges(cx),
 7574            [
 7575                DisplayPoint::new(DisplayRow(0), 0)..DisplayPoint::new(DisplayRow(0), 1),
 7576                DisplayPoint::new(DisplayRow(1), 0)..DisplayPoint::new(DisplayRow(1), 1),
 7577                DisplayPoint::new(DisplayRow(2), 0)..DisplayPoint::new(DisplayRow(2), 1)
 7578            ]
 7579        );
 7580
 7581        // Ensure inserting the last character of a multi-byte bracket pair
 7582        // doesn't surround the selections with the bracket.
 7583        editor.handle_input("*", window, cx);
 7584        assert_eq!(
 7585            editor.text(cx),
 7586            "
 7587                *
 7588                *
 7589                *
 7590            "
 7591            .unindent()
 7592        );
 7593        assert_eq!(
 7594            editor.selections.display_ranges(cx),
 7595            [
 7596                DisplayPoint::new(DisplayRow(0), 1)..DisplayPoint::new(DisplayRow(0), 1),
 7597                DisplayPoint::new(DisplayRow(1), 1)..DisplayPoint::new(DisplayRow(1), 1),
 7598                DisplayPoint::new(DisplayRow(2), 1)..DisplayPoint::new(DisplayRow(2), 1)
 7599            ]
 7600        );
 7601    });
 7602}
 7603
 7604#[gpui::test]
 7605async fn test_delete_autoclose_pair(cx: &mut TestAppContext) {
 7606    init_test(cx, |_| {});
 7607
 7608    let language = Arc::new(Language::new(
 7609        LanguageConfig {
 7610            brackets: BracketPairConfig {
 7611                pairs: vec![BracketPair {
 7612                    start: "{".to_string(),
 7613                    end: "}".to_string(),
 7614                    close: true,
 7615                    surround: true,
 7616                    newline: true,
 7617                }],
 7618                ..Default::default()
 7619            },
 7620            autoclose_before: "}".to_string(),
 7621            ..Default::default()
 7622        },
 7623        Some(tree_sitter_rust::LANGUAGE.into()),
 7624    ));
 7625
 7626    let text = r#"
 7627        a
 7628        b
 7629        c
 7630    "#
 7631    .unindent();
 7632
 7633    let buffer = cx.new(|cx| Buffer::local(text, cx).with_language(language, cx));
 7634    let buffer = cx.new(|cx| MultiBuffer::singleton(buffer, cx));
 7635    let (editor, cx) = cx.add_window_view(|window, cx| build_editor(buffer, window, cx));
 7636    editor
 7637        .condition::<crate::EditorEvent>(cx, |editor, cx| !editor.buffer.read(cx).is_parsing(cx))
 7638        .await;
 7639
 7640    editor.update_in(cx, |editor, window, cx| {
 7641        editor.change_selections(None, window, cx, |s| {
 7642            s.select_ranges([
 7643                Point::new(0, 1)..Point::new(0, 1),
 7644                Point::new(1, 1)..Point::new(1, 1),
 7645                Point::new(2, 1)..Point::new(2, 1),
 7646            ])
 7647        });
 7648
 7649        editor.handle_input("{", window, cx);
 7650        editor.handle_input("{", window, cx);
 7651        editor.handle_input("_", window, cx);
 7652        assert_eq!(
 7653            editor.text(cx),
 7654            "
 7655                a{{_}}
 7656                b{{_}}
 7657                c{{_}}
 7658            "
 7659            .unindent()
 7660        );
 7661        assert_eq!(
 7662            editor.selections.ranges::<Point>(cx),
 7663            [
 7664                Point::new(0, 4)..Point::new(0, 4),
 7665                Point::new(1, 4)..Point::new(1, 4),
 7666                Point::new(2, 4)..Point::new(2, 4)
 7667            ]
 7668        );
 7669
 7670        editor.backspace(&Default::default(), window, cx);
 7671        editor.backspace(&Default::default(), window, cx);
 7672        assert_eq!(
 7673            editor.text(cx),
 7674            "
 7675                a{}
 7676                b{}
 7677                c{}
 7678            "
 7679            .unindent()
 7680        );
 7681        assert_eq!(
 7682            editor.selections.ranges::<Point>(cx),
 7683            [
 7684                Point::new(0, 2)..Point::new(0, 2),
 7685                Point::new(1, 2)..Point::new(1, 2),
 7686                Point::new(2, 2)..Point::new(2, 2)
 7687            ]
 7688        );
 7689
 7690        editor.delete_to_previous_word_start(&Default::default(), window, cx);
 7691        assert_eq!(
 7692            editor.text(cx),
 7693            "
 7694                a
 7695                b
 7696                c
 7697            "
 7698            .unindent()
 7699        );
 7700        assert_eq!(
 7701            editor.selections.ranges::<Point>(cx),
 7702            [
 7703                Point::new(0, 1)..Point::new(0, 1),
 7704                Point::new(1, 1)..Point::new(1, 1),
 7705                Point::new(2, 1)..Point::new(2, 1)
 7706            ]
 7707        );
 7708    });
 7709}
 7710
 7711#[gpui::test]
 7712async fn test_always_treat_brackets_as_autoclosed_delete(cx: &mut TestAppContext) {
 7713    init_test(cx, |settings| {
 7714        settings.defaults.always_treat_brackets_as_autoclosed = Some(true);
 7715    });
 7716
 7717    let mut cx = EditorTestContext::new(cx).await;
 7718
 7719    let language = Arc::new(Language::new(
 7720        LanguageConfig {
 7721            brackets: BracketPairConfig {
 7722                pairs: vec![
 7723                    BracketPair {
 7724                        start: "{".to_string(),
 7725                        end: "}".to_string(),
 7726                        close: true,
 7727                        surround: true,
 7728                        newline: true,
 7729                    },
 7730                    BracketPair {
 7731                        start: "(".to_string(),
 7732                        end: ")".to_string(),
 7733                        close: true,
 7734                        surround: true,
 7735                        newline: true,
 7736                    },
 7737                    BracketPair {
 7738                        start: "[".to_string(),
 7739                        end: "]".to_string(),
 7740                        close: false,
 7741                        surround: true,
 7742                        newline: true,
 7743                    },
 7744                ],
 7745                ..Default::default()
 7746            },
 7747            autoclose_before: "})]".to_string(),
 7748            ..Default::default()
 7749        },
 7750        Some(tree_sitter_rust::LANGUAGE.into()),
 7751    ));
 7752
 7753    cx.language_registry().add(language.clone());
 7754    cx.update_buffer(|buffer, cx| {
 7755        buffer.set_language(Some(language), cx);
 7756    });
 7757
 7758    cx.set_state(
 7759        &"
 7760            {(ˇ)}
 7761            [[ˇ]]
 7762            {(ˇ)}
 7763        "
 7764        .unindent(),
 7765    );
 7766
 7767    cx.update_editor(|editor, window, cx| {
 7768        editor.backspace(&Default::default(), window, cx);
 7769        editor.backspace(&Default::default(), window, cx);
 7770    });
 7771
 7772    cx.assert_editor_state(
 7773        &"
 7774            ˇ
 7775            ˇ]]
 7776            ˇ
 7777        "
 7778        .unindent(),
 7779    );
 7780
 7781    cx.update_editor(|editor, window, cx| {
 7782        editor.handle_input("{", window, cx);
 7783        editor.handle_input("{", window, cx);
 7784        editor.move_right(&MoveRight, window, cx);
 7785        editor.move_right(&MoveRight, window, cx);
 7786        editor.move_left(&MoveLeft, window, cx);
 7787        editor.move_left(&MoveLeft, window, cx);
 7788        editor.backspace(&Default::default(), window, cx);
 7789    });
 7790
 7791    cx.assert_editor_state(
 7792        &"
 7793            {ˇ}
 7794            {ˇ}]]
 7795            {ˇ}
 7796        "
 7797        .unindent(),
 7798    );
 7799
 7800    cx.update_editor(|editor, window, cx| {
 7801        editor.backspace(&Default::default(), window, cx);
 7802    });
 7803
 7804    cx.assert_editor_state(
 7805        &"
 7806            ˇ
 7807            ˇ]]
 7808            ˇ
 7809        "
 7810        .unindent(),
 7811    );
 7812}
 7813
 7814#[gpui::test]
 7815async fn test_auto_replace_emoji_shortcode(cx: &mut TestAppContext) {
 7816    init_test(cx, |_| {});
 7817
 7818    let language = Arc::new(Language::new(
 7819        LanguageConfig::default(),
 7820        Some(tree_sitter_rust::LANGUAGE.into()),
 7821    ));
 7822
 7823    let buffer = cx.new(|cx| Buffer::local("", cx).with_language(language, cx));
 7824    let buffer = cx.new(|cx| MultiBuffer::singleton(buffer, cx));
 7825    let (editor, cx) = cx.add_window_view(|window, cx| build_editor(buffer, window, cx));
 7826    editor
 7827        .condition::<crate::EditorEvent>(cx, |editor, cx| !editor.buffer.read(cx).is_parsing(cx))
 7828        .await;
 7829
 7830    editor.update_in(cx, |editor, window, cx| {
 7831        editor.set_auto_replace_emoji_shortcode(true);
 7832
 7833        editor.handle_input("Hello ", window, cx);
 7834        editor.handle_input(":wave", window, cx);
 7835        assert_eq!(editor.text(cx), "Hello :wave".unindent());
 7836
 7837        editor.handle_input(":", window, cx);
 7838        assert_eq!(editor.text(cx), "Hello 👋".unindent());
 7839
 7840        editor.handle_input(" :smile", window, cx);
 7841        assert_eq!(editor.text(cx), "Hello 👋 :smile".unindent());
 7842
 7843        editor.handle_input(":", window, cx);
 7844        assert_eq!(editor.text(cx), "Hello 👋 😄".unindent());
 7845
 7846        // Ensure shortcode gets replaced when it is part of a word that only consists of emojis
 7847        editor.handle_input(":wave", window, cx);
 7848        assert_eq!(editor.text(cx), "Hello 👋 😄:wave".unindent());
 7849
 7850        editor.handle_input(":", window, cx);
 7851        assert_eq!(editor.text(cx), "Hello 👋 😄👋".unindent());
 7852
 7853        editor.handle_input(":1", window, cx);
 7854        assert_eq!(editor.text(cx), "Hello 👋 😄👋:1".unindent());
 7855
 7856        editor.handle_input(":", window, cx);
 7857        assert_eq!(editor.text(cx), "Hello 👋 😄👋:1:".unindent());
 7858
 7859        // Ensure shortcode does not get replaced when it is part of a word
 7860        editor.handle_input(" Test:wave", window, cx);
 7861        assert_eq!(editor.text(cx), "Hello 👋 😄👋:1: Test:wave".unindent());
 7862
 7863        editor.handle_input(":", window, cx);
 7864        assert_eq!(editor.text(cx), "Hello 👋 😄👋:1: Test:wave:".unindent());
 7865
 7866        editor.set_auto_replace_emoji_shortcode(false);
 7867
 7868        // Ensure shortcode does not get replaced when auto replace is off
 7869        editor.handle_input(" :wave", window, cx);
 7870        assert_eq!(
 7871            editor.text(cx),
 7872            "Hello 👋 😄👋:1: Test:wave: :wave".unindent()
 7873        );
 7874
 7875        editor.handle_input(":", window, cx);
 7876        assert_eq!(
 7877            editor.text(cx),
 7878            "Hello 👋 😄👋:1: Test:wave: :wave:".unindent()
 7879        );
 7880    });
 7881}
 7882
 7883#[gpui::test]
 7884async fn test_snippet_placeholder_choices(cx: &mut TestAppContext) {
 7885    init_test(cx, |_| {});
 7886
 7887    let (text, insertion_ranges) = marked_text_ranges(
 7888        indoc! {"
 7889            ˇ
 7890        "},
 7891        false,
 7892    );
 7893
 7894    let buffer = cx.update(|cx| MultiBuffer::build_simple(&text, cx));
 7895    let (editor, cx) = cx.add_window_view(|window, cx| build_editor(buffer, window, cx));
 7896
 7897    _ = editor.update_in(cx, |editor, window, cx| {
 7898        let snippet = Snippet::parse("type ${1|,i32,u32|} = $2").unwrap();
 7899
 7900        editor
 7901            .insert_snippet(&insertion_ranges, snippet, window, cx)
 7902            .unwrap();
 7903
 7904        fn assert(editor: &mut Editor, cx: &mut Context<Editor>, marked_text: &str) {
 7905            let (expected_text, selection_ranges) = marked_text_ranges(marked_text, false);
 7906            assert_eq!(editor.text(cx), expected_text);
 7907            assert_eq!(editor.selections.ranges::<usize>(cx), selection_ranges);
 7908        }
 7909
 7910        assert(
 7911            editor,
 7912            cx,
 7913            indoc! {"
 7914            type «» =•
 7915            "},
 7916        );
 7917
 7918        assert!(editor.context_menu_visible(), "There should be a matches");
 7919    });
 7920}
 7921
 7922#[gpui::test]
 7923async fn test_snippets(cx: &mut TestAppContext) {
 7924    init_test(cx, |_| {});
 7925
 7926    let (text, insertion_ranges) = marked_text_ranges(
 7927        indoc! {"
 7928            a.ˇ b
 7929            a.ˇ b
 7930            a.ˇ b
 7931        "},
 7932        false,
 7933    );
 7934
 7935    let buffer = cx.update(|cx| MultiBuffer::build_simple(&text, cx));
 7936    let (editor, cx) = cx.add_window_view(|window, cx| build_editor(buffer, window, cx));
 7937
 7938    editor.update_in(cx, |editor, window, cx| {
 7939        let snippet = Snippet::parse("f(${1:one}, ${2:two}, ${1:three})$0").unwrap();
 7940
 7941        editor
 7942            .insert_snippet(&insertion_ranges, snippet, window, cx)
 7943            .unwrap();
 7944
 7945        fn assert(editor: &mut Editor, cx: &mut Context<Editor>, marked_text: &str) {
 7946            let (expected_text, selection_ranges) = marked_text_ranges(marked_text, false);
 7947            assert_eq!(editor.text(cx), expected_text);
 7948            assert_eq!(editor.selections.ranges::<usize>(cx), selection_ranges);
 7949        }
 7950
 7951        assert(
 7952            editor,
 7953            cx,
 7954            indoc! {"
 7955                a.f(«one», two, «three») b
 7956                a.f(«one», two, «three») b
 7957                a.f(«one», two, «three») b
 7958            "},
 7959        );
 7960
 7961        // Can't move earlier than the first tab stop
 7962        assert!(!editor.move_to_prev_snippet_tabstop(window, cx));
 7963        assert(
 7964            editor,
 7965            cx,
 7966            indoc! {"
 7967                a.f(«one», two, «three») b
 7968                a.f(«one», two, «three») b
 7969                a.f(«one», two, «three») b
 7970            "},
 7971        );
 7972
 7973        assert!(editor.move_to_next_snippet_tabstop(window, cx));
 7974        assert(
 7975            editor,
 7976            cx,
 7977            indoc! {"
 7978                a.f(one, «two», three) b
 7979                a.f(one, «two», three) b
 7980                a.f(one, «two», three) b
 7981            "},
 7982        );
 7983
 7984        editor.move_to_prev_snippet_tabstop(window, cx);
 7985        assert(
 7986            editor,
 7987            cx,
 7988            indoc! {"
 7989                a.f(«one», two, «three») b
 7990                a.f(«one», two, «three») b
 7991                a.f(«one», two, «three») b
 7992            "},
 7993        );
 7994
 7995        assert!(editor.move_to_next_snippet_tabstop(window, cx));
 7996        assert(
 7997            editor,
 7998            cx,
 7999            indoc! {"
 8000                a.f(one, «two», three) b
 8001                a.f(one, «two», three) b
 8002                a.f(one, «two», three) b
 8003            "},
 8004        );
 8005        assert!(editor.move_to_next_snippet_tabstop(window, cx));
 8006        assert(
 8007            editor,
 8008            cx,
 8009            indoc! {"
 8010                a.f(one, two, three)ˇ b
 8011                a.f(one, two, three)ˇ b
 8012                a.f(one, two, three)ˇ b
 8013            "},
 8014        );
 8015
 8016        // As soon as the last tab stop is reached, snippet state is gone
 8017        editor.move_to_prev_snippet_tabstop(window, cx);
 8018        assert(
 8019            editor,
 8020            cx,
 8021            indoc! {"
 8022                a.f(one, two, three)ˇ b
 8023                a.f(one, two, three)ˇ b
 8024                a.f(one, two, three)ˇ b
 8025            "},
 8026        );
 8027    });
 8028}
 8029
 8030#[gpui::test]
 8031async fn test_document_format_during_save(cx: &mut TestAppContext) {
 8032    init_test(cx, |_| {});
 8033
 8034    let fs = FakeFs::new(cx.executor());
 8035    fs.insert_file(path!("/file.rs"), Default::default()).await;
 8036
 8037    let project = Project::test(fs, [path!("/file.rs").as_ref()], cx).await;
 8038
 8039    let language_registry = project.read_with(cx, |project, _| project.languages().clone());
 8040    language_registry.add(rust_lang());
 8041    let mut fake_servers = language_registry.register_fake_lsp(
 8042        "Rust",
 8043        FakeLspAdapter {
 8044            capabilities: lsp::ServerCapabilities {
 8045                document_formatting_provider: Some(lsp::OneOf::Left(true)),
 8046                ..Default::default()
 8047            },
 8048            ..Default::default()
 8049        },
 8050    );
 8051
 8052    let buffer = project
 8053        .update(cx, |project, cx| {
 8054            project.open_local_buffer(path!("/file.rs"), cx)
 8055        })
 8056        .await
 8057        .unwrap();
 8058
 8059    let buffer = cx.new(|cx| MultiBuffer::singleton(buffer, cx));
 8060    let (editor, cx) = cx.add_window_view(|window, cx| {
 8061        build_editor_with_project(project.clone(), buffer, window, cx)
 8062    });
 8063    editor.update_in(cx, |editor, window, cx| {
 8064        editor.set_text("one\ntwo\nthree\n", window, cx)
 8065    });
 8066    assert!(cx.read(|cx| editor.is_dirty(cx)));
 8067
 8068    cx.executor().start_waiting();
 8069    let fake_server = fake_servers.next().await.unwrap();
 8070
 8071    {
 8072        fake_server.set_request_handler::<lsp::request::Formatting, _, _>(
 8073            move |params, _| async move {
 8074                assert_eq!(
 8075                    params.text_document.uri,
 8076                    lsp::Url::from_file_path(path!("/file.rs")).unwrap()
 8077                );
 8078                assert_eq!(params.options.tab_size, 4);
 8079                Ok(Some(vec![lsp::TextEdit::new(
 8080                    lsp::Range::new(lsp::Position::new(0, 3), lsp::Position::new(1, 0)),
 8081                    ", ".to_string(),
 8082                )]))
 8083            },
 8084        );
 8085        let save = editor
 8086            .update_in(cx, |editor, window, cx| {
 8087                editor.save(true, project.clone(), window, cx)
 8088            })
 8089            .unwrap();
 8090        cx.executor().start_waiting();
 8091        save.await;
 8092
 8093        assert_eq!(
 8094            editor.update(cx, |editor, cx| editor.text(cx)),
 8095            "one, two\nthree\n"
 8096        );
 8097        assert!(!cx.read(|cx| editor.is_dirty(cx)));
 8098    }
 8099
 8100    {
 8101        editor.update_in(cx, |editor, window, cx| {
 8102            editor.set_text("one\ntwo\nthree\n", window, cx)
 8103        });
 8104        assert!(cx.read(|cx| editor.is_dirty(cx)));
 8105
 8106        // Ensure we can still save even if formatting hangs.
 8107        fake_server.set_request_handler::<lsp::request::Formatting, _, _>(
 8108            move |params, _| async move {
 8109                assert_eq!(
 8110                    params.text_document.uri,
 8111                    lsp::Url::from_file_path(path!("/file.rs")).unwrap()
 8112                );
 8113                futures::future::pending::<()>().await;
 8114                unreachable!()
 8115            },
 8116        );
 8117        let save = editor
 8118            .update_in(cx, |editor, window, cx| {
 8119                editor.save(true, project.clone(), window, cx)
 8120            })
 8121            .unwrap();
 8122        cx.executor().advance_clock(super::FORMAT_TIMEOUT);
 8123        cx.executor().start_waiting();
 8124        save.await;
 8125        assert_eq!(
 8126            editor.update(cx, |editor, cx| editor.text(cx)),
 8127            "one\ntwo\nthree\n"
 8128        );
 8129    }
 8130
 8131    // For non-dirty buffer, no formatting request should be sent
 8132    {
 8133        assert!(!cx.read(|cx| editor.is_dirty(cx)));
 8134
 8135        fake_server.set_request_handler::<lsp::request::Formatting, _, _>(move |_, _| async move {
 8136            panic!("Should not be invoked on non-dirty buffer");
 8137        });
 8138        let save = editor
 8139            .update_in(cx, |editor, window, cx| {
 8140                editor.save(true, project.clone(), window, cx)
 8141            })
 8142            .unwrap();
 8143        cx.executor().start_waiting();
 8144        save.await;
 8145    }
 8146
 8147    // Set rust language override and assert overridden tabsize is sent to language server
 8148    update_test_language_settings(cx, |settings| {
 8149        settings.languages.insert(
 8150            "Rust".into(),
 8151            LanguageSettingsContent {
 8152                tab_size: NonZeroU32::new(8),
 8153                ..Default::default()
 8154            },
 8155        );
 8156    });
 8157
 8158    {
 8159        editor.update_in(cx, |editor, window, cx| {
 8160            editor.set_text("somehting_new\n", window, cx)
 8161        });
 8162        assert!(cx.read(|cx| editor.is_dirty(cx)));
 8163        let _formatting_request_signal = fake_server
 8164            .set_request_handler::<lsp::request::Formatting, _, _>(move |params, _| async move {
 8165                assert_eq!(
 8166                    params.text_document.uri,
 8167                    lsp::Url::from_file_path(path!("/file.rs")).unwrap()
 8168                );
 8169                assert_eq!(params.options.tab_size, 8);
 8170                Ok(Some(vec![]))
 8171            });
 8172        let save = editor
 8173            .update_in(cx, |editor, window, cx| {
 8174                editor.save(true, project.clone(), window, cx)
 8175            })
 8176            .unwrap();
 8177        cx.executor().start_waiting();
 8178        save.await;
 8179    }
 8180}
 8181
 8182#[gpui::test]
 8183async fn test_multibuffer_format_during_save(cx: &mut TestAppContext) {
 8184    init_test(cx, |_| {});
 8185
 8186    let cols = 4;
 8187    let rows = 10;
 8188    let sample_text_1 = sample_text(rows, cols, 'a');
 8189    assert_eq!(
 8190        sample_text_1,
 8191        "aaaa\nbbbb\ncccc\ndddd\neeee\nffff\ngggg\nhhhh\niiii\njjjj"
 8192    );
 8193    let sample_text_2 = sample_text(rows, cols, 'l');
 8194    assert_eq!(
 8195        sample_text_2,
 8196        "llll\nmmmm\nnnnn\noooo\npppp\nqqqq\nrrrr\nssss\ntttt\nuuuu"
 8197    );
 8198    let sample_text_3 = sample_text(rows, cols, 'v');
 8199    assert_eq!(
 8200        sample_text_3,
 8201        "vvvv\nwwww\nxxxx\nyyyy\nzzzz\n{{{{\n||||\n}}}}\n~~~~\n\u{7f}\u{7f}\u{7f}\u{7f}"
 8202    );
 8203
 8204    let fs = FakeFs::new(cx.executor());
 8205    fs.insert_tree(
 8206        path!("/a"),
 8207        json!({
 8208            "main.rs": sample_text_1,
 8209            "other.rs": sample_text_2,
 8210            "lib.rs": sample_text_3,
 8211        }),
 8212    )
 8213    .await;
 8214
 8215    let project = Project::test(fs, [path!("/a").as_ref()], cx).await;
 8216    let workspace = cx.add_window(|window, cx| Workspace::test_new(project.clone(), window, cx));
 8217    let cx = &mut VisualTestContext::from_window(*workspace.deref(), cx);
 8218
 8219    let language_registry = project.read_with(cx, |project, _| project.languages().clone());
 8220    language_registry.add(rust_lang());
 8221    let mut fake_servers = language_registry.register_fake_lsp(
 8222        "Rust",
 8223        FakeLspAdapter {
 8224            capabilities: lsp::ServerCapabilities {
 8225                document_formatting_provider: Some(lsp::OneOf::Left(true)),
 8226                ..Default::default()
 8227            },
 8228            ..Default::default()
 8229        },
 8230    );
 8231
 8232    let worktree = project.update(cx, |project, cx| {
 8233        let mut worktrees = project.worktrees(cx).collect::<Vec<_>>();
 8234        assert_eq!(worktrees.len(), 1);
 8235        worktrees.pop().unwrap()
 8236    });
 8237    let worktree_id = worktree.update(cx, |worktree, _| worktree.id());
 8238
 8239    let buffer_1 = project
 8240        .update(cx, |project, cx| {
 8241            project.open_buffer((worktree_id, "main.rs"), cx)
 8242        })
 8243        .await
 8244        .unwrap();
 8245    let buffer_2 = project
 8246        .update(cx, |project, cx| {
 8247            project.open_buffer((worktree_id, "other.rs"), cx)
 8248        })
 8249        .await
 8250        .unwrap();
 8251    let buffer_3 = project
 8252        .update(cx, |project, cx| {
 8253            project.open_buffer((worktree_id, "lib.rs"), cx)
 8254        })
 8255        .await
 8256        .unwrap();
 8257
 8258    let multi_buffer = cx.new(|cx| {
 8259        let mut multi_buffer = MultiBuffer::new(ReadWrite);
 8260        multi_buffer.push_excerpts(
 8261            buffer_1.clone(),
 8262            [
 8263                ExcerptRange::new(Point::new(0, 0)..Point::new(3, 0)),
 8264                ExcerptRange::new(Point::new(5, 0)..Point::new(7, 0)),
 8265                ExcerptRange::new(Point::new(9, 0)..Point::new(10, 4)),
 8266            ],
 8267            cx,
 8268        );
 8269        multi_buffer.push_excerpts(
 8270            buffer_2.clone(),
 8271            [
 8272                ExcerptRange::new(Point::new(0, 0)..Point::new(3, 0)),
 8273                ExcerptRange::new(Point::new(5, 0)..Point::new(7, 0)),
 8274                ExcerptRange::new(Point::new(9, 0)..Point::new(10, 4)),
 8275            ],
 8276            cx,
 8277        );
 8278        multi_buffer.push_excerpts(
 8279            buffer_3.clone(),
 8280            [
 8281                ExcerptRange::new(Point::new(0, 0)..Point::new(3, 0)),
 8282                ExcerptRange::new(Point::new(5, 0)..Point::new(7, 0)),
 8283                ExcerptRange::new(Point::new(9, 0)..Point::new(10, 4)),
 8284            ],
 8285            cx,
 8286        );
 8287        multi_buffer
 8288    });
 8289    let multi_buffer_editor = cx.new_window_entity(|window, cx| {
 8290        Editor::new(
 8291            EditorMode::full(),
 8292            multi_buffer,
 8293            Some(project.clone()),
 8294            window,
 8295            cx,
 8296        )
 8297    });
 8298
 8299    multi_buffer_editor.update_in(cx, |editor, window, cx| {
 8300        editor.change_selections(Some(Autoscroll::Next), window, cx, |s| {
 8301            s.select_ranges(Some(1..2))
 8302        });
 8303        editor.insert("|one|two|three|", window, cx);
 8304    });
 8305    assert!(cx.read(|cx| multi_buffer_editor.is_dirty(cx)));
 8306    multi_buffer_editor.update_in(cx, |editor, window, cx| {
 8307        editor.change_selections(Some(Autoscroll::Next), window, cx, |s| {
 8308            s.select_ranges(Some(60..70))
 8309        });
 8310        editor.insert("|four|five|six|", window, cx);
 8311    });
 8312    assert!(cx.read(|cx| multi_buffer_editor.is_dirty(cx)));
 8313
 8314    // First two buffers should be edited, but not the third one.
 8315    assert_eq!(
 8316        multi_buffer_editor.update(cx, |editor, cx| editor.text(cx)),
 8317        "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}",
 8318    );
 8319    buffer_1.update(cx, |buffer, _| {
 8320        assert!(buffer.is_dirty());
 8321        assert_eq!(
 8322            buffer.text(),
 8323            "a|one|two|three|aa\nbbbb\ncccc\ndddd\neeee\nffff\ngggg\nhhhh\niiii\njjjj",
 8324        )
 8325    });
 8326    buffer_2.update(cx, |buffer, _| {
 8327        assert!(buffer.is_dirty());
 8328        assert_eq!(
 8329            buffer.text(),
 8330            "llll\nmmmm\nnnnn|four|five|six|oooo\npppp\nr\nssss\ntttt\nuuuu",
 8331        )
 8332    });
 8333    buffer_3.update(cx, |buffer, _| {
 8334        assert!(!buffer.is_dirty());
 8335        assert_eq!(buffer.text(), sample_text_3,)
 8336    });
 8337    cx.executor().run_until_parked();
 8338
 8339    cx.executor().start_waiting();
 8340    let save = multi_buffer_editor
 8341        .update_in(cx, |editor, window, cx| {
 8342            editor.save(true, project.clone(), window, cx)
 8343        })
 8344        .unwrap();
 8345
 8346    let fake_server = fake_servers.next().await.unwrap();
 8347    fake_server
 8348        .server
 8349        .on_request::<lsp::request::Formatting, _, _>(move |params, _| async move {
 8350            Ok(Some(vec![lsp::TextEdit::new(
 8351                lsp::Range::new(lsp::Position::new(0, 3), lsp::Position::new(1, 0)),
 8352                format!("[{} formatted]", params.text_document.uri),
 8353            )]))
 8354        })
 8355        .detach();
 8356    save.await;
 8357
 8358    // After multibuffer saving, only first two buffers should be reformatted, but not the third one (as it was not dirty).
 8359    assert!(cx.read(|cx| !multi_buffer_editor.is_dirty(cx)));
 8360    assert_eq!(
 8361        multi_buffer_editor.update(cx, |editor, cx| editor.text(cx)),
 8362        uri!(
 8363            "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}"
 8364        ),
 8365    );
 8366    buffer_1.update(cx, |buffer, _| {
 8367        assert!(!buffer.is_dirty());
 8368        assert_eq!(
 8369            buffer.text(),
 8370            uri!("a|o[file:///a/main.rs formatted]bbbb\ncccc\ndddd\neeee\nffff\ngggg\nhhhh\niiii\njjjj\n"),
 8371        )
 8372    });
 8373    buffer_2.update(cx, |buffer, _| {
 8374        assert!(!buffer.is_dirty());
 8375        assert_eq!(
 8376            buffer.text(),
 8377            uri!("lll[file:///a/other.rs formatted]mmmm\nnnnn|four|five|six|oooo\npppp\nr\nssss\ntttt\nuuuu\n"),
 8378        )
 8379    });
 8380    buffer_3.update(cx, |buffer, _| {
 8381        assert!(!buffer.is_dirty());
 8382        assert_eq!(buffer.text(), sample_text_3,)
 8383    });
 8384}
 8385
 8386#[gpui::test]
 8387async fn test_range_format_during_save(cx: &mut TestAppContext) {
 8388    init_test(cx, |_| {});
 8389
 8390    let fs = FakeFs::new(cx.executor());
 8391    fs.insert_file(path!("/file.rs"), Default::default()).await;
 8392
 8393    let project = Project::test(fs, [path!("/").as_ref()], cx).await;
 8394
 8395    let language_registry = project.read_with(cx, |project, _| project.languages().clone());
 8396    language_registry.add(rust_lang());
 8397    let mut fake_servers = language_registry.register_fake_lsp(
 8398        "Rust",
 8399        FakeLspAdapter {
 8400            capabilities: lsp::ServerCapabilities {
 8401                document_range_formatting_provider: Some(lsp::OneOf::Left(true)),
 8402                ..Default::default()
 8403            },
 8404            ..Default::default()
 8405        },
 8406    );
 8407
 8408    let buffer = project
 8409        .update(cx, |project, cx| {
 8410            project.open_local_buffer(path!("/file.rs"), cx)
 8411        })
 8412        .await
 8413        .unwrap();
 8414
 8415    let buffer = cx.new(|cx| MultiBuffer::singleton(buffer, cx));
 8416    let (editor, cx) = cx.add_window_view(|window, cx| {
 8417        build_editor_with_project(project.clone(), buffer, window, cx)
 8418    });
 8419    editor.update_in(cx, |editor, window, cx| {
 8420        editor.set_text("one\ntwo\nthree\n", window, cx)
 8421    });
 8422    assert!(cx.read(|cx| editor.is_dirty(cx)));
 8423
 8424    cx.executor().start_waiting();
 8425    let fake_server = fake_servers.next().await.unwrap();
 8426
 8427    let save = editor
 8428        .update_in(cx, |editor, window, cx| {
 8429            editor.save(true, project.clone(), window, cx)
 8430        })
 8431        .unwrap();
 8432    fake_server
 8433        .set_request_handler::<lsp::request::RangeFormatting, _, _>(move |params, _| async move {
 8434            assert_eq!(
 8435                params.text_document.uri,
 8436                lsp::Url::from_file_path(path!("/file.rs")).unwrap()
 8437            );
 8438            assert_eq!(params.options.tab_size, 4);
 8439            Ok(Some(vec![lsp::TextEdit::new(
 8440                lsp::Range::new(lsp::Position::new(0, 3), lsp::Position::new(1, 0)),
 8441                ", ".to_string(),
 8442            )]))
 8443        })
 8444        .next()
 8445        .await;
 8446    cx.executor().start_waiting();
 8447    save.await;
 8448    assert_eq!(
 8449        editor.update(cx, |editor, cx| editor.text(cx)),
 8450        "one, two\nthree\n"
 8451    );
 8452    assert!(!cx.read(|cx| editor.is_dirty(cx)));
 8453
 8454    editor.update_in(cx, |editor, window, cx| {
 8455        editor.set_text("one\ntwo\nthree\n", window, cx)
 8456    });
 8457    assert!(cx.read(|cx| editor.is_dirty(cx)));
 8458
 8459    // Ensure we can still save even if formatting hangs.
 8460    fake_server.set_request_handler::<lsp::request::RangeFormatting, _, _>(
 8461        move |params, _| async move {
 8462            assert_eq!(
 8463                params.text_document.uri,
 8464                lsp::Url::from_file_path(path!("/file.rs")).unwrap()
 8465            );
 8466            futures::future::pending::<()>().await;
 8467            unreachable!()
 8468        },
 8469    );
 8470    let save = editor
 8471        .update_in(cx, |editor, window, cx| {
 8472            editor.save(true, project.clone(), window, cx)
 8473        })
 8474        .unwrap();
 8475    cx.executor().advance_clock(super::FORMAT_TIMEOUT);
 8476    cx.executor().start_waiting();
 8477    save.await;
 8478    assert_eq!(
 8479        editor.update(cx, |editor, cx| editor.text(cx)),
 8480        "one\ntwo\nthree\n"
 8481    );
 8482    assert!(!cx.read(|cx| editor.is_dirty(cx)));
 8483
 8484    // For non-dirty buffer, no formatting request should be sent
 8485    let save = editor
 8486        .update_in(cx, |editor, window, cx| {
 8487            editor.save(true, project.clone(), window, cx)
 8488        })
 8489        .unwrap();
 8490    let _pending_format_request = fake_server
 8491        .set_request_handler::<lsp::request::RangeFormatting, _, _>(move |_, _| async move {
 8492            panic!("Should not be invoked on non-dirty buffer");
 8493        })
 8494        .next();
 8495    cx.executor().start_waiting();
 8496    save.await;
 8497
 8498    // Set Rust language override and assert overridden tabsize is sent to language server
 8499    update_test_language_settings(cx, |settings| {
 8500        settings.languages.insert(
 8501            "Rust".into(),
 8502            LanguageSettingsContent {
 8503                tab_size: NonZeroU32::new(8),
 8504                ..Default::default()
 8505            },
 8506        );
 8507    });
 8508
 8509    editor.update_in(cx, |editor, window, cx| {
 8510        editor.set_text("somehting_new\n", window, cx)
 8511    });
 8512    assert!(cx.read(|cx| editor.is_dirty(cx)));
 8513    let save = editor
 8514        .update_in(cx, |editor, window, cx| {
 8515            editor.save(true, project.clone(), window, cx)
 8516        })
 8517        .unwrap();
 8518    fake_server
 8519        .set_request_handler::<lsp::request::RangeFormatting, _, _>(move |params, _| async move {
 8520            assert_eq!(
 8521                params.text_document.uri,
 8522                lsp::Url::from_file_path(path!("/file.rs")).unwrap()
 8523            );
 8524            assert_eq!(params.options.tab_size, 8);
 8525            Ok(Some(vec![]))
 8526        })
 8527        .next()
 8528        .await;
 8529    cx.executor().start_waiting();
 8530    save.await;
 8531}
 8532
 8533#[gpui::test]
 8534async fn test_document_format_manual_trigger(cx: &mut TestAppContext) {
 8535    init_test(cx, |settings| {
 8536        settings.defaults.formatter = Some(language_settings::SelectedFormatter::List(
 8537            FormatterList(vec![Formatter::LanguageServer { name: None }].into()),
 8538        ))
 8539    });
 8540
 8541    let fs = FakeFs::new(cx.executor());
 8542    fs.insert_file(path!("/file.rs"), Default::default()).await;
 8543
 8544    let project = Project::test(fs, [path!("/").as_ref()], cx).await;
 8545
 8546    let language_registry = project.read_with(cx, |project, _| project.languages().clone());
 8547    language_registry.add(Arc::new(Language::new(
 8548        LanguageConfig {
 8549            name: "Rust".into(),
 8550            matcher: LanguageMatcher {
 8551                path_suffixes: vec!["rs".to_string()],
 8552                ..Default::default()
 8553            },
 8554            ..LanguageConfig::default()
 8555        },
 8556        Some(tree_sitter_rust::LANGUAGE.into()),
 8557    )));
 8558    update_test_language_settings(cx, |settings| {
 8559        // Enable Prettier formatting for the same buffer, and ensure
 8560        // LSP is called instead of Prettier.
 8561        settings.defaults.prettier = Some(PrettierSettings {
 8562            allowed: true,
 8563            ..PrettierSettings::default()
 8564        });
 8565    });
 8566    let mut fake_servers = language_registry.register_fake_lsp(
 8567        "Rust",
 8568        FakeLspAdapter {
 8569            capabilities: lsp::ServerCapabilities {
 8570                document_formatting_provider: Some(lsp::OneOf::Left(true)),
 8571                ..Default::default()
 8572            },
 8573            ..Default::default()
 8574        },
 8575    );
 8576
 8577    let buffer = project
 8578        .update(cx, |project, cx| {
 8579            project.open_local_buffer(path!("/file.rs"), cx)
 8580        })
 8581        .await
 8582        .unwrap();
 8583
 8584    let buffer = cx.new(|cx| MultiBuffer::singleton(buffer, cx));
 8585    let (editor, cx) = cx.add_window_view(|window, cx| {
 8586        build_editor_with_project(project.clone(), buffer, window, cx)
 8587    });
 8588    editor.update_in(cx, |editor, window, cx| {
 8589        editor.set_text("one\ntwo\nthree\n", window, cx)
 8590    });
 8591
 8592    cx.executor().start_waiting();
 8593    let fake_server = fake_servers.next().await.unwrap();
 8594
 8595    let format = editor
 8596        .update_in(cx, |editor, window, cx| {
 8597            editor.perform_format(
 8598                project.clone(),
 8599                FormatTrigger::Manual,
 8600                FormatTarget::Buffers,
 8601                window,
 8602                cx,
 8603            )
 8604        })
 8605        .unwrap();
 8606    fake_server
 8607        .set_request_handler::<lsp::request::Formatting, _, _>(move |params, _| async move {
 8608            assert_eq!(
 8609                params.text_document.uri,
 8610                lsp::Url::from_file_path(path!("/file.rs")).unwrap()
 8611            );
 8612            assert_eq!(params.options.tab_size, 4);
 8613            Ok(Some(vec![lsp::TextEdit::new(
 8614                lsp::Range::new(lsp::Position::new(0, 3), lsp::Position::new(1, 0)),
 8615                ", ".to_string(),
 8616            )]))
 8617        })
 8618        .next()
 8619        .await;
 8620    cx.executor().start_waiting();
 8621    format.await;
 8622    assert_eq!(
 8623        editor.update(cx, |editor, cx| editor.text(cx)),
 8624        "one, two\nthree\n"
 8625    );
 8626
 8627    editor.update_in(cx, |editor, window, cx| {
 8628        editor.set_text("one\ntwo\nthree\n", window, cx)
 8629    });
 8630    // Ensure we don't lock if formatting hangs.
 8631    fake_server.set_request_handler::<lsp::request::Formatting, _, _>(
 8632        move |params, _| async move {
 8633            assert_eq!(
 8634                params.text_document.uri,
 8635                lsp::Url::from_file_path(path!("/file.rs")).unwrap()
 8636            );
 8637            futures::future::pending::<()>().await;
 8638            unreachable!()
 8639        },
 8640    );
 8641    let format = editor
 8642        .update_in(cx, |editor, window, cx| {
 8643            editor.perform_format(
 8644                project,
 8645                FormatTrigger::Manual,
 8646                FormatTarget::Buffers,
 8647                window,
 8648                cx,
 8649            )
 8650        })
 8651        .unwrap();
 8652    cx.executor().advance_clock(super::FORMAT_TIMEOUT);
 8653    cx.executor().start_waiting();
 8654    format.await;
 8655    assert_eq!(
 8656        editor.update(cx, |editor, cx| editor.text(cx)),
 8657        "one\ntwo\nthree\n"
 8658    );
 8659}
 8660
 8661#[gpui::test]
 8662async fn test_multiple_formatters(cx: &mut TestAppContext) {
 8663    init_test(cx, |settings| {
 8664        settings.defaults.remove_trailing_whitespace_on_save = Some(true);
 8665        settings.defaults.formatter =
 8666            Some(language_settings::SelectedFormatter::List(FormatterList(
 8667                vec![
 8668                    Formatter::LanguageServer { name: None },
 8669                    Formatter::CodeActions(
 8670                        [
 8671                            ("code-action-1".into(), true),
 8672                            ("code-action-2".into(), true),
 8673                        ]
 8674                        .into_iter()
 8675                        .collect(),
 8676                    ),
 8677                ]
 8678                .into(),
 8679            )))
 8680    });
 8681
 8682    let fs = FakeFs::new(cx.executor());
 8683    fs.insert_file(path!("/file.rs"), "one  \ntwo   \nthree".into())
 8684        .await;
 8685
 8686    let project = Project::test(fs, [path!("/").as_ref()], cx).await;
 8687    let language_registry = project.read_with(cx, |project, _| project.languages().clone());
 8688    language_registry.add(rust_lang());
 8689
 8690    let mut fake_servers = language_registry.register_fake_lsp(
 8691        "Rust",
 8692        FakeLspAdapter {
 8693            capabilities: lsp::ServerCapabilities {
 8694                document_formatting_provider: Some(lsp::OneOf::Left(true)),
 8695                execute_command_provider: Some(lsp::ExecuteCommandOptions {
 8696                    commands: vec!["the-command-for-code-action-1".into()],
 8697                    ..Default::default()
 8698                }),
 8699                code_action_provider: Some(lsp::CodeActionProviderCapability::Simple(true)),
 8700                ..Default::default()
 8701            },
 8702            ..Default::default()
 8703        },
 8704    );
 8705
 8706    let buffer = project
 8707        .update(cx, |project, cx| {
 8708            project.open_local_buffer(path!("/file.rs"), cx)
 8709        })
 8710        .await
 8711        .unwrap();
 8712
 8713    let buffer = cx.new(|cx| MultiBuffer::singleton(buffer, cx));
 8714    let (editor, cx) = cx.add_window_view(|window, cx| {
 8715        build_editor_with_project(project.clone(), buffer, window, cx)
 8716    });
 8717
 8718    cx.executor().start_waiting();
 8719
 8720    let fake_server = fake_servers.next().await.unwrap();
 8721    fake_server.set_request_handler::<lsp::request::Formatting, _, _>(
 8722        move |_params, _| async move {
 8723            Ok(Some(vec![lsp::TextEdit::new(
 8724                lsp::Range::new(lsp::Position::new(0, 0), lsp::Position::new(0, 0)),
 8725                "applied-formatting\n".to_string(),
 8726            )]))
 8727        },
 8728    );
 8729    fake_server.set_request_handler::<lsp::request::CodeActionRequest, _, _>(
 8730        move |params, _| async move {
 8731            assert_eq!(
 8732                params.context.only,
 8733                Some(vec!["code-action-1".into(), "code-action-2".into()])
 8734            );
 8735            let uri = lsp::Url::from_file_path(path!("/file.rs")).unwrap();
 8736            Ok(Some(vec![
 8737                lsp::CodeActionOrCommand::CodeAction(lsp::CodeAction {
 8738                    kind: Some("code-action-1".into()),
 8739                    edit: Some(lsp::WorkspaceEdit::new(
 8740                        [(
 8741                            uri.clone(),
 8742                            vec![lsp::TextEdit::new(
 8743                                lsp::Range::new(lsp::Position::new(0, 0), lsp::Position::new(0, 0)),
 8744                                "applied-code-action-1-edit\n".to_string(),
 8745                            )],
 8746                        )]
 8747                        .into_iter()
 8748                        .collect(),
 8749                    )),
 8750                    command: Some(lsp::Command {
 8751                        command: "the-command-for-code-action-1".into(),
 8752                        ..Default::default()
 8753                    }),
 8754                    ..Default::default()
 8755                }),
 8756                lsp::CodeActionOrCommand::CodeAction(lsp::CodeAction {
 8757                    kind: Some("code-action-2".into()),
 8758                    edit: Some(lsp::WorkspaceEdit::new(
 8759                        [(
 8760                            uri.clone(),
 8761                            vec![lsp::TextEdit::new(
 8762                                lsp::Range::new(lsp::Position::new(0, 0), lsp::Position::new(0, 0)),
 8763                                "applied-code-action-2-edit\n".to_string(),
 8764                            )],
 8765                        )]
 8766                        .into_iter()
 8767                        .collect(),
 8768                    )),
 8769                    ..Default::default()
 8770                }),
 8771            ]))
 8772        },
 8773    );
 8774
 8775    fake_server.set_request_handler::<lsp::request::CodeActionResolveRequest, _, _>({
 8776        move |params, _| async move { Ok(params) }
 8777    });
 8778
 8779    let command_lock = Arc::new(futures::lock::Mutex::new(()));
 8780    fake_server.set_request_handler::<lsp::request::ExecuteCommand, _, _>({
 8781        let fake = fake_server.clone();
 8782        let lock = command_lock.clone();
 8783        move |params, _| {
 8784            assert_eq!(params.command, "the-command-for-code-action-1");
 8785            let fake = fake.clone();
 8786            let lock = lock.clone();
 8787            async move {
 8788                lock.lock().await;
 8789                fake.server
 8790                    .request::<lsp::request::ApplyWorkspaceEdit>(lsp::ApplyWorkspaceEditParams {
 8791                        label: None,
 8792                        edit: lsp::WorkspaceEdit {
 8793                            changes: Some(
 8794                                [(
 8795                                    lsp::Url::from_file_path(path!("/file.rs")).unwrap(),
 8796                                    vec![lsp::TextEdit {
 8797                                        range: lsp::Range::new(
 8798                                            lsp::Position::new(0, 0),
 8799                                            lsp::Position::new(0, 0),
 8800                                        ),
 8801                                        new_text: "applied-code-action-1-command\n".into(),
 8802                                    }],
 8803                                )]
 8804                                .into_iter()
 8805                                .collect(),
 8806                            ),
 8807                            ..Default::default()
 8808                        },
 8809                    })
 8810                    .await
 8811                    .unwrap();
 8812                Ok(Some(json!(null)))
 8813            }
 8814        }
 8815    });
 8816
 8817    cx.executor().start_waiting();
 8818    editor
 8819        .update_in(cx, |editor, window, cx| {
 8820            editor.perform_format(
 8821                project.clone(),
 8822                FormatTrigger::Manual,
 8823                FormatTarget::Buffers,
 8824                window,
 8825                cx,
 8826            )
 8827        })
 8828        .unwrap()
 8829        .await;
 8830    editor.update(cx, |editor, cx| {
 8831        assert_eq!(
 8832            editor.text(cx),
 8833            r#"
 8834                applied-code-action-2-edit
 8835                applied-code-action-1-command
 8836                applied-code-action-1-edit
 8837                applied-formatting
 8838                one
 8839                two
 8840                three
 8841            "#
 8842            .unindent()
 8843        );
 8844    });
 8845
 8846    editor.update_in(cx, |editor, window, cx| {
 8847        editor.undo(&Default::default(), window, cx);
 8848        assert_eq!(editor.text(cx), "one  \ntwo   \nthree");
 8849    });
 8850
 8851    // Perform a manual edit while waiting for an LSP command
 8852    // that's being run as part of a formatting code action.
 8853    let lock_guard = command_lock.lock().await;
 8854    let format = editor
 8855        .update_in(cx, |editor, window, cx| {
 8856            editor.perform_format(
 8857                project.clone(),
 8858                FormatTrigger::Manual,
 8859                FormatTarget::Buffers,
 8860                window,
 8861                cx,
 8862            )
 8863        })
 8864        .unwrap();
 8865    cx.run_until_parked();
 8866    editor.update(cx, |editor, cx| {
 8867        assert_eq!(
 8868            editor.text(cx),
 8869            r#"
 8870                applied-code-action-1-edit
 8871                applied-formatting
 8872                one
 8873                two
 8874                three
 8875            "#
 8876            .unindent()
 8877        );
 8878
 8879        editor.buffer.update(cx, |buffer, cx| {
 8880            let ix = buffer.len(cx);
 8881            buffer.edit([(ix..ix, "edited\n")], None, cx);
 8882        });
 8883    });
 8884
 8885    // Allow the LSP command to proceed. Because the buffer was edited,
 8886    // the second code action will not be run.
 8887    drop(lock_guard);
 8888    format.await;
 8889    editor.update_in(cx, |editor, window, cx| {
 8890        assert_eq!(
 8891            editor.text(cx),
 8892            r#"
 8893                applied-code-action-1-command
 8894                applied-code-action-1-edit
 8895                applied-formatting
 8896                one
 8897                two
 8898                three
 8899                edited
 8900            "#
 8901            .unindent()
 8902        );
 8903
 8904        // The manual edit is undone first, because it is the last thing the user did
 8905        // (even though the command completed afterwards).
 8906        editor.undo(&Default::default(), window, cx);
 8907        assert_eq!(
 8908            editor.text(cx),
 8909            r#"
 8910                applied-code-action-1-command
 8911                applied-code-action-1-edit
 8912                applied-formatting
 8913                one
 8914                two
 8915                three
 8916            "#
 8917            .unindent()
 8918        );
 8919
 8920        // All the formatting (including the command, which completed after the manual edit)
 8921        // is undone together.
 8922        editor.undo(&Default::default(), window, cx);
 8923        assert_eq!(editor.text(cx), "one  \ntwo   \nthree");
 8924    });
 8925}
 8926
 8927#[gpui::test]
 8928async fn test_organize_imports_manual_trigger(cx: &mut TestAppContext) {
 8929    init_test(cx, |settings| {
 8930        settings.defaults.formatter = Some(language_settings::SelectedFormatter::List(
 8931            FormatterList(vec![Formatter::LanguageServer { name: None }].into()),
 8932        ))
 8933    });
 8934
 8935    let fs = FakeFs::new(cx.executor());
 8936    fs.insert_file(path!("/file.ts"), Default::default()).await;
 8937
 8938    let project = Project::test(fs, [path!("/").as_ref()], cx).await;
 8939
 8940    let language_registry = project.read_with(cx, |project, _| project.languages().clone());
 8941    language_registry.add(Arc::new(Language::new(
 8942        LanguageConfig {
 8943            name: "TypeScript".into(),
 8944            matcher: LanguageMatcher {
 8945                path_suffixes: vec!["ts".to_string()],
 8946                ..Default::default()
 8947            },
 8948            ..LanguageConfig::default()
 8949        },
 8950        Some(tree_sitter_typescript::LANGUAGE_TYPESCRIPT.into()),
 8951    )));
 8952    update_test_language_settings(cx, |settings| {
 8953        settings.defaults.prettier = Some(PrettierSettings {
 8954            allowed: true,
 8955            ..PrettierSettings::default()
 8956        });
 8957    });
 8958    let mut fake_servers = language_registry.register_fake_lsp(
 8959        "TypeScript",
 8960        FakeLspAdapter {
 8961            capabilities: lsp::ServerCapabilities {
 8962                code_action_provider: Some(lsp::CodeActionProviderCapability::Simple(true)),
 8963                ..Default::default()
 8964            },
 8965            ..Default::default()
 8966        },
 8967    );
 8968
 8969    let buffer = project
 8970        .update(cx, |project, cx| {
 8971            project.open_local_buffer(path!("/file.ts"), cx)
 8972        })
 8973        .await
 8974        .unwrap();
 8975
 8976    let buffer = cx.new(|cx| MultiBuffer::singleton(buffer, cx));
 8977    let (editor, cx) = cx.add_window_view(|window, cx| {
 8978        build_editor_with_project(project.clone(), buffer, window, cx)
 8979    });
 8980    editor.update_in(cx, |editor, window, cx| {
 8981        editor.set_text(
 8982            "import { a } from 'module';\nimport { b } from 'module';\n\nconst x = a;\n",
 8983            window,
 8984            cx,
 8985        )
 8986    });
 8987
 8988    cx.executor().start_waiting();
 8989    let fake_server = fake_servers.next().await.unwrap();
 8990
 8991    let format = editor
 8992        .update_in(cx, |editor, window, cx| {
 8993            editor.perform_code_action_kind(
 8994                project.clone(),
 8995                CodeActionKind::SOURCE_ORGANIZE_IMPORTS,
 8996                window,
 8997                cx,
 8998            )
 8999        })
 9000        .unwrap();
 9001    fake_server
 9002        .set_request_handler::<lsp::request::CodeActionRequest, _, _>(move |params, _| async move {
 9003            assert_eq!(
 9004                params.text_document.uri,
 9005                lsp::Url::from_file_path(path!("/file.ts")).unwrap()
 9006            );
 9007            Ok(Some(vec![lsp::CodeActionOrCommand::CodeAction(
 9008                lsp::CodeAction {
 9009                    title: "Organize Imports".to_string(),
 9010                    kind: Some(lsp::CodeActionKind::SOURCE_ORGANIZE_IMPORTS),
 9011                    edit: Some(lsp::WorkspaceEdit {
 9012                        changes: Some(
 9013                            [(
 9014                                params.text_document.uri.clone(),
 9015                                vec![lsp::TextEdit::new(
 9016                                    lsp::Range::new(
 9017                                        lsp::Position::new(1, 0),
 9018                                        lsp::Position::new(2, 0),
 9019                                    ),
 9020                                    "".to_string(),
 9021                                )],
 9022                            )]
 9023                            .into_iter()
 9024                            .collect(),
 9025                        ),
 9026                        ..Default::default()
 9027                    }),
 9028                    ..Default::default()
 9029                },
 9030            )]))
 9031        })
 9032        .next()
 9033        .await;
 9034    cx.executor().start_waiting();
 9035    format.await;
 9036    assert_eq!(
 9037        editor.update(cx, |editor, cx| editor.text(cx)),
 9038        "import { a } from 'module';\n\nconst x = a;\n"
 9039    );
 9040
 9041    editor.update_in(cx, |editor, window, cx| {
 9042        editor.set_text(
 9043            "import { a } from 'module';\nimport { b } from 'module';\n\nconst x = a;\n",
 9044            window,
 9045            cx,
 9046        )
 9047    });
 9048    // Ensure we don't lock if code action hangs.
 9049    fake_server.set_request_handler::<lsp::request::CodeActionRequest, _, _>(
 9050        move |params, _| async move {
 9051            assert_eq!(
 9052                params.text_document.uri,
 9053                lsp::Url::from_file_path(path!("/file.ts")).unwrap()
 9054            );
 9055            futures::future::pending::<()>().await;
 9056            unreachable!()
 9057        },
 9058    );
 9059    let format = editor
 9060        .update_in(cx, |editor, window, cx| {
 9061            editor.perform_code_action_kind(
 9062                project,
 9063                CodeActionKind::SOURCE_ORGANIZE_IMPORTS,
 9064                window,
 9065                cx,
 9066            )
 9067        })
 9068        .unwrap();
 9069    cx.executor().advance_clock(super::CODE_ACTION_TIMEOUT);
 9070    cx.executor().start_waiting();
 9071    format.await;
 9072    assert_eq!(
 9073        editor.update(cx, |editor, cx| editor.text(cx)),
 9074        "import { a } from 'module';\nimport { b } from 'module';\n\nconst x = a;\n"
 9075    );
 9076}
 9077
 9078#[gpui::test]
 9079async fn test_concurrent_format_requests(cx: &mut TestAppContext) {
 9080    init_test(cx, |_| {});
 9081
 9082    let mut cx = EditorLspTestContext::new_rust(
 9083        lsp::ServerCapabilities {
 9084            document_formatting_provider: Some(lsp::OneOf::Left(true)),
 9085            ..Default::default()
 9086        },
 9087        cx,
 9088    )
 9089    .await;
 9090
 9091    cx.set_state(indoc! {"
 9092        one.twoˇ
 9093    "});
 9094
 9095    // The format request takes a long time. When it completes, it inserts
 9096    // a newline and an indent before the `.`
 9097    cx.lsp
 9098        .set_request_handler::<lsp::request::Formatting, _, _>(move |_, cx| {
 9099            let executor = cx.background_executor().clone();
 9100            async move {
 9101                executor.timer(Duration::from_millis(100)).await;
 9102                Ok(Some(vec![lsp::TextEdit {
 9103                    range: lsp::Range::new(lsp::Position::new(0, 3), lsp::Position::new(0, 3)),
 9104                    new_text: "\n    ".into(),
 9105                }]))
 9106            }
 9107        });
 9108
 9109    // Submit a format request.
 9110    let format_1 = cx
 9111        .update_editor(|editor, window, cx| editor.format(&Format, window, cx))
 9112        .unwrap();
 9113    cx.executor().run_until_parked();
 9114
 9115    // Submit a second format request.
 9116    let format_2 = cx
 9117        .update_editor(|editor, window, cx| editor.format(&Format, window, cx))
 9118        .unwrap();
 9119    cx.executor().run_until_parked();
 9120
 9121    // Wait for both format requests to complete
 9122    cx.executor().advance_clock(Duration::from_millis(200));
 9123    cx.executor().start_waiting();
 9124    format_1.await.unwrap();
 9125    cx.executor().start_waiting();
 9126    format_2.await.unwrap();
 9127
 9128    // The formatting edits only happens once.
 9129    cx.assert_editor_state(indoc! {"
 9130        one
 9131            .twoˇ
 9132    "});
 9133}
 9134
 9135#[gpui::test]
 9136async fn test_strip_whitespace_and_format_via_lsp(cx: &mut TestAppContext) {
 9137    init_test(cx, |settings| {
 9138        settings.defaults.formatter = Some(language_settings::SelectedFormatter::Auto)
 9139    });
 9140
 9141    let mut cx = EditorLspTestContext::new_rust(
 9142        lsp::ServerCapabilities {
 9143            document_formatting_provider: Some(lsp::OneOf::Left(true)),
 9144            ..Default::default()
 9145        },
 9146        cx,
 9147    )
 9148    .await;
 9149
 9150    // Set up a buffer white some trailing whitespace and no trailing newline.
 9151    cx.set_state(
 9152        &[
 9153            "one ",   //
 9154            "twoˇ",   //
 9155            "three ", //
 9156            "four",   //
 9157        ]
 9158        .join("\n"),
 9159    );
 9160
 9161    // Submit a format request.
 9162    let format = cx
 9163        .update_editor(|editor, window, cx| editor.format(&Format, window, cx))
 9164        .unwrap();
 9165
 9166    // Record which buffer changes have been sent to the language server
 9167    let buffer_changes = Arc::new(Mutex::new(Vec::new()));
 9168    cx.lsp
 9169        .handle_notification::<lsp::notification::DidChangeTextDocument, _>({
 9170            let buffer_changes = buffer_changes.clone();
 9171            move |params, _| {
 9172                buffer_changes.lock().extend(
 9173                    params
 9174                        .content_changes
 9175                        .into_iter()
 9176                        .map(|e| (e.range.unwrap(), e.text)),
 9177                );
 9178            }
 9179        });
 9180
 9181    // Handle formatting requests to the language server.
 9182    cx.lsp
 9183        .set_request_handler::<lsp::request::Formatting, _, _>({
 9184            let buffer_changes = buffer_changes.clone();
 9185            move |_, _| {
 9186                // When formatting is requested, trailing whitespace has already been stripped,
 9187                // and the trailing newline has already been added.
 9188                assert_eq!(
 9189                    &buffer_changes.lock()[1..],
 9190                    &[
 9191                        (
 9192                            lsp::Range::new(lsp::Position::new(0, 3), lsp::Position::new(0, 4)),
 9193                            "".into()
 9194                        ),
 9195                        (
 9196                            lsp::Range::new(lsp::Position::new(2, 5), lsp::Position::new(2, 6)),
 9197                            "".into()
 9198                        ),
 9199                        (
 9200                            lsp::Range::new(lsp::Position::new(3, 4), lsp::Position::new(3, 4)),
 9201                            "\n".into()
 9202                        ),
 9203                    ]
 9204                );
 9205
 9206                // Insert blank lines between each line of the buffer.
 9207                async move {
 9208                    Ok(Some(vec![
 9209                        lsp::TextEdit {
 9210                            range: lsp::Range::new(
 9211                                lsp::Position::new(1, 0),
 9212                                lsp::Position::new(1, 0),
 9213                            ),
 9214                            new_text: "\n".into(),
 9215                        },
 9216                        lsp::TextEdit {
 9217                            range: lsp::Range::new(
 9218                                lsp::Position::new(2, 0),
 9219                                lsp::Position::new(2, 0),
 9220                            ),
 9221                            new_text: "\n".into(),
 9222                        },
 9223                    ]))
 9224                }
 9225            }
 9226        });
 9227
 9228    // After formatting the buffer, the trailing whitespace is stripped,
 9229    // a newline is appended, and the edits provided by the language server
 9230    // have been applied.
 9231    format.await.unwrap();
 9232    cx.assert_editor_state(
 9233        &[
 9234            "one",   //
 9235            "",      //
 9236            "twoˇ",  //
 9237            "",      //
 9238            "three", //
 9239            "four",  //
 9240            "",      //
 9241        ]
 9242        .join("\n"),
 9243    );
 9244
 9245    // Undoing the formatting undoes the trailing whitespace removal, the
 9246    // trailing newline, and the LSP edits.
 9247    cx.update_buffer(|buffer, cx| buffer.undo(cx));
 9248    cx.assert_editor_state(
 9249        &[
 9250            "one ",   //
 9251            "twoˇ",   //
 9252            "three ", //
 9253            "four",   //
 9254        ]
 9255        .join("\n"),
 9256    );
 9257}
 9258
 9259#[gpui::test]
 9260async fn test_handle_input_for_show_signature_help_auto_signature_help_true(
 9261    cx: &mut TestAppContext,
 9262) {
 9263    init_test(cx, |_| {});
 9264
 9265    cx.update(|cx| {
 9266        cx.update_global::<SettingsStore, _>(|settings, cx| {
 9267            settings.update_user_settings::<EditorSettings>(cx, |settings| {
 9268                settings.auto_signature_help = Some(true);
 9269            });
 9270        });
 9271    });
 9272
 9273    let mut cx = EditorLspTestContext::new_rust(
 9274        lsp::ServerCapabilities {
 9275            signature_help_provider: Some(lsp::SignatureHelpOptions {
 9276                ..Default::default()
 9277            }),
 9278            ..Default::default()
 9279        },
 9280        cx,
 9281    )
 9282    .await;
 9283
 9284    let language = Language::new(
 9285        LanguageConfig {
 9286            name: "Rust".into(),
 9287            brackets: BracketPairConfig {
 9288                pairs: vec![
 9289                    BracketPair {
 9290                        start: "{".to_string(),
 9291                        end: "}".to_string(),
 9292                        close: true,
 9293                        surround: true,
 9294                        newline: true,
 9295                    },
 9296                    BracketPair {
 9297                        start: "(".to_string(),
 9298                        end: ")".to_string(),
 9299                        close: true,
 9300                        surround: true,
 9301                        newline: true,
 9302                    },
 9303                    BracketPair {
 9304                        start: "/*".to_string(),
 9305                        end: " */".to_string(),
 9306                        close: true,
 9307                        surround: true,
 9308                        newline: true,
 9309                    },
 9310                    BracketPair {
 9311                        start: "[".to_string(),
 9312                        end: "]".to_string(),
 9313                        close: false,
 9314                        surround: false,
 9315                        newline: true,
 9316                    },
 9317                    BracketPair {
 9318                        start: "\"".to_string(),
 9319                        end: "\"".to_string(),
 9320                        close: true,
 9321                        surround: true,
 9322                        newline: false,
 9323                    },
 9324                    BracketPair {
 9325                        start: "<".to_string(),
 9326                        end: ">".to_string(),
 9327                        close: false,
 9328                        surround: true,
 9329                        newline: true,
 9330                    },
 9331                ],
 9332                ..Default::default()
 9333            },
 9334            autoclose_before: "})]".to_string(),
 9335            ..Default::default()
 9336        },
 9337        Some(tree_sitter_rust::LANGUAGE.into()),
 9338    );
 9339    let language = Arc::new(language);
 9340
 9341    cx.language_registry().add(language.clone());
 9342    cx.update_buffer(|buffer, cx| {
 9343        buffer.set_language(Some(language), cx);
 9344    });
 9345
 9346    cx.set_state(
 9347        &r#"
 9348            fn main() {
 9349                sampleˇ
 9350            }
 9351        "#
 9352        .unindent(),
 9353    );
 9354
 9355    cx.update_editor(|editor, window, cx| {
 9356        editor.handle_input("(", window, cx);
 9357    });
 9358    cx.assert_editor_state(
 9359        &"
 9360            fn main() {
 9361                sample(ˇ)
 9362            }
 9363        "
 9364        .unindent(),
 9365    );
 9366
 9367    let mocked_response = lsp::SignatureHelp {
 9368        signatures: vec![lsp::SignatureInformation {
 9369            label: "fn sample(param1: u8, param2: u8)".to_string(),
 9370            documentation: None,
 9371            parameters: Some(vec![
 9372                lsp::ParameterInformation {
 9373                    label: lsp::ParameterLabel::Simple("param1: u8".to_string()),
 9374                    documentation: None,
 9375                },
 9376                lsp::ParameterInformation {
 9377                    label: lsp::ParameterLabel::Simple("param2: u8".to_string()),
 9378                    documentation: None,
 9379                },
 9380            ]),
 9381            active_parameter: None,
 9382        }],
 9383        active_signature: Some(0),
 9384        active_parameter: Some(0),
 9385    };
 9386    handle_signature_help_request(&mut cx, mocked_response).await;
 9387
 9388    cx.condition(|editor, _| editor.signature_help_state.is_shown())
 9389        .await;
 9390
 9391    cx.editor(|editor, _, _| {
 9392        let signature_help_state = editor.signature_help_state.popover().cloned();
 9393        assert_eq!(
 9394            signature_help_state.unwrap().label,
 9395            "param1: u8, param2: u8"
 9396        );
 9397    });
 9398}
 9399
 9400#[gpui::test]
 9401async fn test_handle_input_with_different_show_signature_settings(cx: &mut TestAppContext) {
 9402    init_test(cx, |_| {});
 9403
 9404    cx.update(|cx| {
 9405        cx.update_global::<SettingsStore, _>(|settings, cx| {
 9406            settings.update_user_settings::<EditorSettings>(cx, |settings| {
 9407                settings.auto_signature_help = Some(false);
 9408                settings.show_signature_help_after_edits = Some(false);
 9409            });
 9410        });
 9411    });
 9412
 9413    let mut cx = EditorLspTestContext::new_rust(
 9414        lsp::ServerCapabilities {
 9415            signature_help_provider: Some(lsp::SignatureHelpOptions {
 9416                ..Default::default()
 9417            }),
 9418            ..Default::default()
 9419        },
 9420        cx,
 9421    )
 9422    .await;
 9423
 9424    let language = Language::new(
 9425        LanguageConfig {
 9426            name: "Rust".into(),
 9427            brackets: BracketPairConfig {
 9428                pairs: vec![
 9429                    BracketPair {
 9430                        start: "{".to_string(),
 9431                        end: "}".to_string(),
 9432                        close: true,
 9433                        surround: true,
 9434                        newline: true,
 9435                    },
 9436                    BracketPair {
 9437                        start: "(".to_string(),
 9438                        end: ")".to_string(),
 9439                        close: true,
 9440                        surround: true,
 9441                        newline: true,
 9442                    },
 9443                    BracketPair {
 9444                        start: "/*".to_string(),
 9445                        end: " */".to_string(),
 9446                        close: true,
 9447                        surround: true,
 9448                        newline: true,
 9449                    },
 9450                    BracketPair {
 9451                        start: "[".to_string(),
 9452                        end: "]".to_string(),
 9453                        close: false,
 9454                        surround: false,
 9455                        newline: true,
 9456                    },
 9457                    BracketPair {
 9458                        start: "\"".to_string(),
 9459                        end: "\"".to_string(),
 9460                        close: true,
 9461                        surround: true,
 9462                        newline: false,
 9463                    },
 9464                    BracketPair {
 9465                        start: "<".to_string(),
 9466                        end: ">".to_string(),
 9467                        close: false,
 9468                        surround: true,
 9469                        newline: true,
 9470                    },
 9471                ],
 9472                ..Default::default()
 9473            },
 9474            autoclose_before: "})]".to_string(),
 9475            ..Default::default()
 9476        },
 9477        Some(tree_sitter_rust::LANGUAGE.into()),
 9478    );
 9479    let language = Arc::new(language);
 9480
 9481    cx.language_registry().add(language.clone());
 9482    cx.update_buffer(|buffer, cx| {
 9483        buffer.set_language(Some(language), cx);
 9484    });
 9485
 9486    // Ensure that signature_help is not called when no signature help is enabled.
 9487    cx.set_state(
 9488        &r#"
 9489            fn main() {
 9490                sampleˇ
 9491            }
 9492        "#
 9493        .unindent(),
 9494    );
 9495    cx.update_editor(|editor, window, cx| {
 9496        editor.handle_input("(", window, cx);
 9497    });
 9498    cx.assert_editor_state(
 9499        &"
 9500            fn main() {
 9501                sample(ˇ)
 9502            }
 9503        "
 9504        .unindent(),
 9505    );
 9506    cx.editor(|editor, _, _| {
 9507        assert!(editor.signature_help_state.task().is_none());
 9508    });
 9509
 9510    let mocked_response = lsp::SignatureHelp {
 9511        signatures: vec![lsp::SignatureInformation {
 9512            label: "fn sample(param1: u8, param2: u8)".to_string(),
 9513            documentation: None,
 9514            parameters: Some(vec![
 9515                lsp::ParameterInformation {
 9516                    label: lsp::ParameterLabel::Simple("param1: u8".to_string()),
 9517                    documentation: None,
 9518                },
 9519                lsp::ParameterInformation {
 9520                    label: lsp::ParameterLabel::Simple("param2: u8".to_string()),
 9521                    documentation: None,
 9522                },
 9523            ]),
 9524            active_parameter: None,
 9525        }],
 9526        active_signature: Some(0),
 9527        active_parameter: Some(0),
 9528    };
 9529
 9530    // Ensure that signature_help is called when enabled afte edits
 9531    cx.update(|_, cx| {
 9532        cx.update_global::<SettingsStore, _>(|settings, cx| {
 9533            settings.update_user_settings::<EditorSettings>(cx, |settings| {
 9534                settings.auto_signature_help = Some(false);
 9535                settings.show_signature_help_after_edits = Some(true);
 9536            });
 9537        });
 9538    });
 9539    cx.set_state(
 9540        &r#"
 9541            fn main() {
 9542                sampleˇ
 9543            }
 9544        "#
 9545        .unindent(),
 9546    );
 9547    cx.update_editor(|editor, window, cx| {
 9548        editor.handle_input("(", window, cx);
 9549    });
 9550    cx.assert_editor_state(
 9551        &"
 9552            fn main() {
 9553                sample(ˇ)
 9554            }
 9555        "
 9556        .unindent(),
 9557    );
 9558    handle_signature_help_request(&mut cx, mocked_response.clone()).await;
 9559    cx.condition(|editor, _| editor.signature_help_state.is_shown())
 9560        .await;
 9561    cx.update_editor(|editor, _, _| {
 9562        let signature_help_state = editor.signature_help_state.popover().cloned();
 9563        assert!(signature_help_state.is_some());
 9564        assert_eq!(
 9565            signature_help_state.unwrap().label,
 9566            "param1: u8, param2: u8"
 9567        );
 9568        editor.signature_help_state = SignatureHelpState::default();
 9569    });
 9570
 9571    // Ensure that signature_help is called when auto signature help override is enabled
 9572    cx.update(|_, cx| {
 9573        cx.update_global::<SettingsStore, _>(|settings, cx| {
 9574            settings.update_user_settings::<EditorSettings>(cx, |settings| {
 9575                settings.auto_signature_help = Some(true);
 9576                settings.show_signature_help_after_edits = Some(false);
 9577            });
 9578        });
 9579    });
 9580    cx.set_state(
 9581        &r#"
 9582            fn main() {
 9583                sampleˇ
 9584            }
 9585        "#
 9586        .unindent(),
 9587    );
 9588    cx.update_editor(|editor, window, cx| {
 9589        editor.handle_input("(", window, cx);
 9590    });
 9591    cx.assert_editor_state(
 9592        &"
 9593            fn main() {
 9594                sample(ˇ)
 9595            }
 9596        "
 9597        .unindent(),
 9598    );
 9599    handle_signature_help_request(&mut cx, mocked_response).await;
 9600    cx.condition(|editor, _| editor.signature_help_state.is_shown())
 9601        .await;
 9602    cx.editor(|editor, _, _| {
 9603        let signature_help_state = editor.signature_help_state.popover().cloned();
 9604        assert!(signature_help_state.is_some());
 9605        assert_eq!(
 9606            signature_help_state.unwrap().label,
 9607            "param1: u8, param2: u8"
 9608        );
 9609    });
 9610}
 9611
 9612#[gpui::test]
 9613async fn test_signature_help(cx: &mut TestAppContext) {
 9614    init_test(cx, |_| {});
 9615    cx.update(|cx| {
 9616        cx.update_global::<SettingsStore, _>(|settings, cx| {
 9617            settings.update_user_settings::<EditorSettings>(cx, |settings| {
 9618                settings.auto_signature_help = Some(true);
 9619            });
 9620        });
 9621    });
 9622
 9623    let mut cx = EditorLspTestContext::new_rust(
 9624        lsp::ServerCapabilities {
 9625            signature_help_provider: Some(lsp::SignatureHelpOptions {
 9626                ..Default::default()
 9627            }),
 9628            ..Default::default()
 9629        },
 9630        cx,
 9631    )
 9632    .await;
 9633
 9634    // A test that directly calls `show_signature_help`
 9635    cx.update_editor(|editor, window, cx| {
 9636        editor.show_signature_help(&ShowSignatureHelp, window, cx);
 9637    });
 9638
 9639    let mocked_response = lsp::SignatureHelp {
 9640        signatures: vec![lsp::SignatureInformation {
 9641            label: "fn sample(param1: u8, param2: u8)".to_string(),
 9642            documentation: None,
 9643            parameters: Some(vec![
 9644                lsp::ParameterInformation {
 9645                    label: lsp::ParameterLabel::Simple("param1: u8".to_string()),
 9646                    documentation: None,
 9647                },
 9648                lsp::ParameterInformation {
 9649                    label: lsp::ParameterLabel::Simple("param2: u8".to_string()),
 9650                    documentation: None,
 9651                },
 9652            ]),
 9653            active_parameter: None,
 9654        }],
 9655        active_signature: Some(0),
 9656        active_parameter: Some(0),
 9657    };
 9658    handle_signature_help_request(&mut cx, mocked_response).await;
 9659
 9660    cx.condition(|editor, _| editor.signature_help_state.is_shown())
 9661        .await;
 9662
 9663    cx.editor(|editor, _, _| {
 9664        let signature_help_state = editor.signature_help_state.popover().cloned();
 9665        assert!(signature_help_state.is_some());
 9666        assert_eq!(
 9667            signature_help_state.unwrap().label,
 9668            "param1: u8, param2: u8"
 9669        );
 9670    });
 9671
 9672    // When exiting outside from inside the brackets, `signature_help` is closed.
 9673    cx.set_state(indoc! {"
 9674        fn main() {
 9675            sample(ˇ);
 9676        }
 9677
 9678        fn sample(param1: u8, param2: u8) {}
 9679    "});
 9680
 9681    cx.update_editor(|editor, window, cx| {
 9682        editor.change_selections(None, window, cx, |s| s.select_ranges([0..0]));
 9683    });
 9684
 9685    let mocked_response = lsp::SignatureHelp {
 9686        signatures: Vec::new(),
 9687        active_signature: None,
 9688        active_parameter: None,
 9689    };
 9690    handle_signature_help_request(&mut cx, mocked_response).await;
 9691
 9692    cx.condition(|editor, _| !editor.signature_help_state.is_shown())
 9693        .await;
 9694
 9695    cx.editor(|editor, _, _| {
 9696        assert!(!editor.signature_help_state.is_shown());
 9697    });
 9698
 9699    // When entering inside the brackets from outside, `show_signature_help` is automatically called.
 9700    cx.set_state(indoc! {"
 9701        fn main() {
 9702            sample(ˇ);
 9703        }
 9704
 9705        fn sample(param1: u8, param2: u8) {}
 9706    "});
 9707
 9708    let mocked_response = lsp::SignatureHelp {
 9709        signatures: vec![lsp::SignatureInformation {
 9710            label: "fn sample(param1: u8, param2: u8)".to_string(),
 9711            documentation: None,
 9712            parameters: Some(vec![
 9713                lsp::ParameterInformation {
 9714                    label: lsp::ParameterLabel::Simple("param1: u8".to_string()),
 9715                    documentation: None,
 9716                },
 9717                lsp::ParameterInformation {
 9718                    label: lsp::ParameterLabel::Simple("param2: u8".to_string()),
 9719                    documentation: None,
 9720                },
 9721            ]),
 9722            active_parameter: None,
 9723        }],
 9724        active_signature: Some(0),
 9725        active_parameter: Some(0),
 9726    };
 9727    handle_signature_help_request(&mut cx, mocked_response.clone()).await;
 9728    cx.condition(|editor, _| editor.signature_help_state.is_shown())
 9729        .await;
 9730    cx.editor(|editor, _, _| {
 9731        assert!(editor.signature_help_state.is_shown());
 9732    });
 9733
 9734    // Restore the popover with more parameter input
 9735    cx.set_state(indoc! {"
 9736        fn main() {
 9737            sample(param1, param2ˇ);
 9738        }
 9739
 9740        fn sample(param1: u8, param2: u8) {}
 9741    "});
 9742
 9743    let mocked_response = lsp::SignatureHelp {
 9744        signatures: vec![lsp::SignatureInformation {
 9745            label: "fn sample(param1: u8, param2: u8)".to_string(),
 9746            documentation: None,
 9747            parameters: Some(vec![
 9748                lsp::ParameterInformation {
 9749                    label: lsp::ParameterLabel::Simple("param1: u8".to_string()),
 9750                    documentation: None,
 9751                },
 9752                lsp::ParameterInformation {
 9753                    label: lsp::ParameterLabel::Simple("param2: u8".to_string()),
 9754                    documentation: None,
 9755                },
 9756            ]),
 9757            active_parameter: None,
 9758        }],
 9759        active_signature: Some(0),
 9760        active_parameter: Some(1),
 9761    };
 9762    handle_signature_help_request(&mut cx, mocked_response.clone()).await;
 9763    cx.condition(|editor, _| editor.signature_help_state.is_shown())
 9764        .await;
 9765
 9766    // When selecting a range, the popover is gone.
 9767    // Avoid using `cx.set_state` to not actually edit the document, just change its selections.
 9768    cx.update_editor(|editor, window, cx| {
 9769        editor.change_selections(None, window, cx, |s| {
 9770            s.select_ranges(Some(Point::new(1, 25)..Point::new(1, 19)));
 9771        })
 9772    });
 9773    cx.assert_editor_state(indoc! {"
 9774        fn main() {
 9775            sample(param1, «ˇparam2»);
 9776        }
 9777
 9778        fn sample(param1: u8, param2: u8) {}
 9779    "});
 9780    cx.editor(|editor, _, _| {
 9781        assert!(!editor.signature_help_state.is_shown());
 9782    });
 9783
 9784    // When unselecting again, the popover is back if within the brackets.
 9785    cx.update_editor(|editor, window, cx| {
 9786        editor.change_selections(None, window, cx, |s| {
 9787            s.select_ranges(Some(Point::new(1, 19)..Point::new(1, 19)));
 9788        })
 9789    });
 9790    cx.assert_editor_state(indoc! {"
 9791        fn main() {
 9792            sample(param1, ˇparam2);
 9793        }
 9794
 9795        fn sample(param1: u8, param2: u8) {}
 9796    "});
 9797    handle_signature_help_request(&mut cx, mocked_response).await;
 9798    cx.condition(|editor, _| editor.signature_help_state.is_shown())
 9799        .await;
 9800    cx.editor(|editor, _, _| {
 9801        assert!(editor.signature_help_state.is_shown());
 9802    });
 9803
 9804    // Test to confirm that SignatureHelp does not appear after deselecting multiple ranges when it was hidden by pressing Escape.
 9805    cx.update_editor(|editor, window, cx| {
 9806        editor.change_selections(None, window, cx, |s| {
 9807            s.select_ranges(Some(Point::new(0, 0)..Point::new(0, 0)));
 9808            s.select_ranges(Some(Point::new(1, 19)..Point::new(1, 19)));
 9809        })
 9810    });
 9811    cx.assert_editor_state(indoc! {"
 9812        fn main() {
 9813            sample(param1, ˇparam2);
 9814        }
 9815
 9816        fn sample(param1: u8, param2: u8) {}
 9817    "});
 9818
 9819    let mocked_response = lsp::SignatureHelp {
 9820        signatures: vec![lsp::SignatureInformation {
 9821            label: "fn sample(param1: u8, param2: u8)".to_string(),
 9822            documentation: None,
 9823            parameters: Some(vec![
 9824                lsp::ParameterInformation {
 9825                    label: lsp::ParameterLabel::Simple("param1: u8".to_string()),
 9826                    documentation: None,
 9827                },
 9828                lsp::ParameterInformation {
 9829                    label: lsp::ParameterLabel::Simple("param2: u8".to_string()),
 9830                    documentation: None,
 9831                },
 9832            ]),
 9833            active_parameter: None,
 9834        }],
 9835        active_signature: Some(0),
 9836        active_parameter: Some(1),
 9837    };
 9838    handle_signature_help_request(&mut cx, mocked_response.clone()).await;
 9839    cx.condition(|editor, _| editor.signature_help_state.is_shown())
 9840        .await;
 9841    cx.update_editor(|editor, _, cx| {
 9842        editor.hide_signature_help(cx, SignatureHelpHiddenBy::Escape);
 9843    });
 9844    cx.condition(|editor, _| !editor.signature_help_state.is_shown())
 9845        .await;
 9846    cx.update_editor(|editor, window, cx| {
 9847        editor.change_selections(None, window, cx, |s| {
 9848            s.select_ranges(Some(Point::new(1, 25)..Point::new(1, 19)));
 9849        })
 9850    });
 9851    cx.assert_editor_state(indoc! {"
 9852        fn main() {
 9853            sample(param1, «ˇparam2»);
 9854        }
 9855
 9856        fn sample(param1: u8, param2: u8) {}
 9857    "});
 9858    cx.update_editor(|editor, window, cx| {
 9859        editor.change_selections(None, window, cx, |s| {
 9860            s.select_ranges(Some(Point::new(1, 19)..Point::new(1, 19)));
 9861        })
 9862    });
 9863    cx.assert_editor_state(indoc! {"
 9864        fn main() {
 9865            sample(param1, ˇparam2);
 9866        }
 9867
 9868        fn sample(param1: u8, param2: u8) {}
 9869    "});
 9870    cx.condition(|editor, _| !editor.signature_help_state.is_shown()) // because hidden by escape
 9871        .await;
 9872}
 9873
 9874#[gpui::test]
 9875async fn test_completion_mode(cx: &mut TestAppContext) {
 9876    init_test(cx, |_| {});
 9877    let mut cx = EditorLspTestContext::new_rust(
 9878        lsp::ServerCapabilities {
 9879            completion_provider: Some(lsp::CompletionOptions {
 9880                resolve_provider: Some(true),
 9881                ..Default::default()
 9882            }),
 9883            ..Default::default()
 9884        },
 9885        cx,
 9886    )
 9887    .await;
 9888
 9889    struct Run {
 9890        run_description: &'static str,
 9891        initial_state: String,
 9892        buffer_marked_text: String,
 9893        completion_text: &'static str,
 9894        expected_with_insert_mode: String,
 9895        expected_with_replace_mode: String,
 9896        expected_with_replace_subsequence_mode: String,
 9897        expected_with_replace_suffix_mode: String,
 9898    }
 9899
 9900    let runs = [
 9901        Run {
 9902            run_description: "Start of word matches completion text",
 9903            initial_state: "before ediˇ after".into(),
 9904            buffer_marked_text: "before <edi|> after".into(),
 9905            completion_text: "editor",
 9906            expected_with_insert_mode: "before editorˇ after".into(),
 9907            expected_with_replace_mode: "before editorˇ after".into(),
 9908            expected_with_replace_subsequence_mode: "before editorˇ after".into(),
 9909            expected_with_replace_suffix_mode: "before editorˇ after".into(),
 9910        },
 9911        Run {
 9912            run_description: "Accept same text at the middle of the word",
 9913            initial_state: "before ediˇtor after".into(),
 9914            buffer_marked_text: "before <edi|tor> after".into(),
 9915            completion_text: "editor",
 9916            expected_with_insert_mode: "before editorˇtor after".into(),
 9917            expected_with_replace_mode: "before editorˇ after".into(),
 9918            expected_with_replace_subsequence_mode: "before editorˇ after".into(),
 9919            expected_with_replace_suffix_mode: "before editorˇ after".into(),
 9920        },
 9921        Run {
 9922            run_description: "End of word matches completion text -- cursor at end",
 9923            initial_state: "before torˇ after".into(),
 9924            buffer_marked_text: "before <tor|> after".into(),
 9925            completion_text: "editor",
 9926            expected_with_insert_mode: "before editorˇ after".into(),
 9927            expected_with_replace_mode: "before editorˇ after".into(),
 9928            expected_with_replace_subsequence_mode: "before editorˇ after".into(),
 9929            expected_with_replace_suffix_mode: "before editorˇ after".into(),
 9930        },
 9931        Run {
 9932            run_description: "End of word matches completion text -- cursor at start",
 9933            initial_state: "before ˇtor after".into(),
 9934            buffer_marked_text: "before <|tor> after".into(),
 9935            completion_text: "editor",
 9936            expected_with_insert_mode: "before editorˇtor after".into(),
 9937            expected_with_replace_mode: "before editorˇ after".into(),
 9938            expected_with_replace_subsequence_mode: "before editorˇ after".into(),
 9939            expected_with_replace_suffix_mode: "before editorˇ after".into(),
 9940        },
 9941        Run {
 9942            run_description: "Prepend text containing whitespace",
 9943            initial_state: "pˇfield: bool".into(),
 9944            buffer_marked_text: "<p|field>: bool".into(),
 9945            completion_text: "pub ",
 9946            expected_with_insert_mode: "pub ˇfield: bool".into(),
 9947            expected_with_replace_mode: "pub ˇ: bool".into(),
 9948            expected_with_replace_subsequence_mode: "pub ˇfield: bool".into(),
 9949            expected_with_replace_suffix_mode: "pub ˇfield: bool".into(),
 9950        },
 9951        Run {
 9952            run_description: "Add element to start of list",
 9953            initial_state: "[element_ˇelement_2]".into(),
 9954            buffer_marked_text: "[<element_|element_2>]".into(),
 9955            completion_text: "element_1",
 9956            expected_with_insert_mode: "[element_1ˇelement_2]".into(),
 9957            expected_with_replace_mode: "[element_1ˇ]".into(),
 9958            expected_with_replace_subsequence_mode: "[element_1ˇelement_2]".into(),
 9959            expected_with_replace_suffix_mode: "[element_1ˇelement_2]".into(),
 9960        },
 9961        Run {
 9962            run_description: "Add element to start of list -- first and second elements are equal",
 9963            initial_state: "[elˇelement]".into(),
 9964            buffer_marked_text: "[<el|element>]".into(),
 9965            completion_text: "element",
 9966            expected_with_insert_mode: "[elementˇelement]".into(),
 9967            expected_with_replace_mode: "[elementˇ]".into(),
 9968            expected_with_replace_subsequence_mode: "[elementˇelement]".into(),
 9969            expected_with_replace_suffix_mode: "[elementˇ]".into(),
 9970        },
 9971        Run {
 9972            run_description: "Ends with matching suffix",
 9973            initial_state: "SubˇError".into(),
 9974            buffer_marked_text: "<Sub|Error>".into(),
 9975            completion_text: "SubscriptionError",
 9976            expected_with_insert_mode: "SubscriptionErrorˇError".into(),
 9977            expected_with_replace_mode: "SubscriptionErrorˇ".into(),
 9978            expected_with_replace_subsequence_mode: "SubscriptionErrorˇ".into(),
 9979            expected_with_replace_suffix_mode: "SubscriptionErrorˇ".into(),
 9980        },
 9981        Run {
 9982            run_description: "Suffix is a subsequence -- contiguous",
 9983            initial_state: "SubˇErr".into(),
 9984            buffer_marked_text: "<Sub|Err>".into(),
 9985            completion_text: "SubscriptionError",
 9986            expected_with_insert_mode: "SubscriptionErrorˇErr".into(),
 9987            expected_with_replace_mode: "SubscriptionErrorˇ".into(),
 9988            expected_with_replace_subsequence_mode: "SubscriptionErrorˇ".into(),
 9989            expected_with_replace_suffix_mode: "SubscriptionErrorˇErr".into(),
 9990        },
 9991        Run {
 9992            run_description: "Suffix is a subsequence -- non-contiguous -- replace intended",
 9993            initial_state: "Suˇscrirr".into(),
 9994            buffer_marked_text: "<Su|scrirr>".into(),
 9995            completion_text: "SubscriptionError",
 9996            expected_with_insert_mode: "SubscriptionErrorˇscrirr".into(),
 9997            expected_with_replace_mode: "SubscriptionErrorˇ".into(),
 9998            expected_with_replace_subsequence_mode: "SubscriptionErrorˇ".into(),
 9999            expected_with_replace_suffix_mode: "SubscriptionErrorˇscrirr".into(),
10000        },
10001        Run {
10002            run_description: "Suffix is a subsequence -- non-contiguous -- replace unintended",
10003            initial_state: "foo(indˇix)".into(),
10004            buffer_marked_text: "foo(<ind|ix>)".into(),
10005            completion_text: "node_index",
10006            expected_with_insert_mode: "foo(node_indexˇix)".into(),
10007            expected_with_replace_mode: "foo(node_indexˇ)".into(),
10008            expected_with_replace_subsequence_mode: "foo(node_indexˇix)".into(),
10009            expected_with_replace_suffix_mode: "foo(node_indexˇix)".into(),
10010        },
10011    ];
10012
10013    for run in runs {
10014        let run_variations = [
10015            (LspInsertMode::Insert, run.expected_with_insert_mode),
10016            (LspInsertMode::Replace, run.expected_with_replace_mode),
10017            (
10018                LspInsertMode::ReplaceSubsequence,
10019                run.expected_with_replace_subsequence_mode,
10020            ),
10021            (
10022                LspInsertMode::ReplaceSuffix,
10023                run.expected_with_replace_suffix_mode,
10024            ),
10025        ];
10026
10027        for (lsp_insert_mode, expected_text) in run_variations {
10028            eprintln!(
10029                "run = {:?}, mode = {lsp_insert_mode:.?}",
10030                run.run_description,
10031            );
10032
10033            update_test_language_settings(&mut cx, |settings| {
10034                settings.defaults.completions = Some(CompletionSettings {
10035                    lsp_insert_mode,
10036                    words: WordsCompletionMode::Disabled,
10037                    lsp: true,
10038                    lsp_fetch_timeout_ms: 0,
10039                });
10040            });
10041
10042            cx.set_state(&run.initial_state);
10043            cx.update_editor(|editor, window, cx| {
10044                editor.show_completions(&ShowCompletions { trigger: None }, window, cx);
10045            });
10046
10047            let counter = Arc::new(AtomicUsize::new(0));
10048            handle_completion_request_with_insert_and_replace(
10049                &mut cx,
10050                &run.buffer_marked_text,
10051                vec![run.completion_text],
10052                counter.clone(),
10053            )
10054            .await;
10055            cx.condition(|editor, _| editor.context_menu_visible())
10056                .await;
10057            assert_eq!(counter.load(atomic::Ordering::Acquire), 1);
10058
10059            let apply_additional_edits = cx.update_editor(|editor, window, cx| {
10060                editor
10061                    .confirm_completion(&ConfirmCompletion::default(), window, cx)
10062                    .unwrap()
10063            });
10064            cx.assert_editor_state(&expected_text);
10065            handle_resolve_completion_request(&mut cx, None).await;
10066            apply_additional_edits.await.unwrap();
10067        }
10068    }
10069}
10070
10071#[gpui::test]
10072async fn test_completion_with_mode_specified_by_action(cx: &mut TestAppContext) {
10073    init_test(cx, |_| {});
10074    let mut cx = EditorLspTestContext::new_rust(
10075        lsp::ServerCapabilities {
10076            completion_provider: Some(lsp::CompletionOptions {
10077                resolve_provider: Some(true),
10078                ..Default::default()
10079            }),
10080            ..Default::default()
10081        },
10082        cx,
10083    )
10084    .await;
10085
10086    let initial_state = "SubˇError";
10087    let buffer_marked_text = "<Sub|Error>";
10088    let completion_text = "SubscriptionError";
10089    let expected_with_insert_mode = "SubscriptionErrorˇError";
10090    let expected_with_replace_mode = "SubscriptionErrorˇ";
10091
10092    update_test_language_settings(&mut cx, |settings| {
10093        settings.defaults.completions = Some(CompletionSettings {
10094            words: WordsCompletionMode::Disabled,
10095            // set the opposite here to ensure that the action is overriding the default behavior
10096            lsp_insert_mode: LspInsertMode::Insert,
10097            lsp: true,
10098            lsp_fetch_timeout_ms: 0,
10099        });
10100    });
10101
10102    cx.set_state(initial_state);
10103    cx.update_editor(|editor, window, cx| {
10104        editor.show_completions(&ShowCompletions { trigger: None }, window, cx);
10105    });
10106
10107    let counter = Arc::new(AtomicUsize::new(0));
10108    handle_completion_request_with_insert_and_replace(
10109        &mut cx,
10110        &buffer_marked_text,
10111        vec![completion_text],
10112        counter.clone(),
10113    )
10114    .await;
10115    cx.condition(|editor, _| editor.context_menu_visible())
10116        .await;
10117    assert_eq!(counter.load(atomic::Ordering::Acquire), 1);
10118
10119    let apply_additional_edits = cx.update_editor(|editor, window, cx| {
10120        editor
10121            .confirm_completion_replace(&ConfirmCompletionReplace, window, cx)
10122            .unwrap()
10123    });
10124    cx.assert_editor_state(&expected_with_replace_mode);
10125    handle_resolve_completion_request(&mut cx, None).await;
10126    apply_additional_edits.await.unwrap();
10127
10128    update_test_language_settings(&mut cx, |settings| {
10129        settings.defaults.completions = Some(CompletionSettings {
10130            words: WordsCompletionMode::Disabled,
10131            // set the opposite here to ensure that the action is overriding the default behavior
10132            lsp_insert_mode: LspInsertMode::Replace,
10133            lsp: true,
10134            lsp_fetch_timeout_ms: 0,
10135        });
10136    });
10137
10138    cx.set_state(initial_state);
10139    cx.update_editor(|editor, window, cx| {
10140        editor.show_completions(&ShowCompletions { trigger: None }, window, cx);
10141    });
10142    handle_completion_request_with_insert_and_replace(
10143        &mut cx,
10144        &buffer_marked_text,
10145        vec![completion_text],
10146        counter.clone(),
10147    )
10148    .await;
10149    cx.condition(|editor, _| editor.context_menu_visible())
10150        .await;
10151    assert_eq!(counter.load(atomic::Ordering::Acquire), 2);
10152
10153    let apply_additional_edits = cx.update_editor(|editor, window, cx| {
10154        editor
10155            .confirm_completion_insert(&ConfirmCompletionInsert, window, cx)
10156            .unwrap()
10157    });
10158    cx.assert_editor_state(&expected_with_insert_mode);
10159    handle_resolve_completion_request(&mut cx, None).await;
10160    apply_additional_edits.await.unwrap();
10161}
10162
10163#[gpui::test]
10164async fn test_completion_replacing_surrounding_text_with_multicursors(cx: &mut TestAppContext) {
10165    init_test(cx, |_| {});
10166    let mut cx = EditorLspTestContext::new_rust(
10167        lsp::ServerCapabilities {
10168            completion_provider: Some(lsp::CompletionOptions {
10169                resolve_provider: Some(true),
10170                ..Default::default()
10171            }),
10172            ..Default::default()
10173        },
10174        cx,
10175    )
10176    .await;
10177
10178    // scenario: surrounding text matches completion text
10179    let completion_text = "to_offset";
10180    let initial_state = indoc! {"
10181        1. buf.to_offˇsuffix
10182        2. buf.to_offˇsuf
10183        3. buf.to_offˇfix
10184        4. buf.to_offˇ
10185        5. into_offˇensive
10186        6. ˇsuffix
10187        7. let ˇ //
10188        8. aaˇzz
10189        9. buf.to_off«zzzzzˇ»suffix
10190        10. buf.«ˇzzzzz»suffix
10191        11. to_off«ˇzzzzz»
10192
10193        buf.to_offˇsuffix  // newest cursor
10194    "};
10195    let completion_marked_buffer = indoc! {"
10196        1. buf.to_offsuffix
10197        2. buf.to_offsuf
10198        3. buf.to_offfix
10199        4. buf.to_off
10200        5. into_offensive
10201        6. suffix
10202        7. let  //
10203        8. aazz
10204        9. buf.to_offzzzzzsuffix
10205        10. buf.zzzzzsuffix
10206        11. to_offzzzzz
10207
10208        buf.<to_off|suffix>  // newest cursor
10209    "};
10210    let expected = indoc! {"
10211        1. buf.to_offsetˇ
10212        2. buf.to_offsetˇsuf
10213        3. buf.to_offsetˇfix
10214        4. buf.to_offsetˇ
10215        5. into_offsetˇensive
10216        6. to_offsetˇsuffix
10217        7. let to_offsetˇ //
10218        8. aato_offsetˇzz
10219        9. buf.to_offsetˇ
10220        10. buf.to_offsetˇsuffix
10221        11. to_offsetˇ
10222
10223        buf.to_offsetˇ  // newest cursor
10224    "};
10225    cx.set_state(initial_state);
10226    cx.update_editor(|editor, window, cx| {
10227        editor.show_completions(&ShowCompletions { trigger: None }, window, cx);
10228    });
10229    handle_completion_request_with_insert_and_replace(
10230        &mut cx,
10231        completion_marked_buffer,
10232        vec![completion_text],
10233        Arc::new(AtomicUsize::new(0)),
10234    )
10235    .await;
10236    cx.condition(|editor, _| editor.context_menu_visible())
10237        .await;
10238    let apply_additional_edits = cx.update_editor(|editor, window, cx| {
10239        editor
10240            .confirm_completion_replace(&ConfirmCompletionReplace, window, cx)
10241            .unwrap()
10242    });
10243    cx.assert_editor_state(expected);
10244    handle_resolve_completion_request(&mut cx, None).await;
10245    apply_additional_edits.await.unwrap();
10246
10247    // scenario: surrounding text matches surroundings of newest cursor, inserting at the end
10248    let completion_text = "foo_and_bar";
10249    let initial_state = indoc! {"
10250        1. ooanbˇ
10251        2. zooanbˇ
10252        3. ooanbˇz
10253        4. zooanbˇz
10254        5. ooanˇ
10255        6. oanbˇ
10256
10257        ooanbˇ
10258    "};
10259    let completion_marked_buffer = indoc! {"
10260        1. ooanb
10261        2. zooanb
10262        3. ooanbz
10263        4. zooanbz
10264        5. ooan
10265        6. oanb
10266
10267        <ooanb|>
10268    "};
10269    let expected = indoc! {"
10270        1. foo_and_barˇ
10271        2. zfoo_and_barˇ
10272        3. foo_and_barˇz
10273        4. zfoo_and_barˇz
10274        5. ooanfoo_and_barˇ
10275        6. oanbfoo_and_barˇ
10276
10277        foo_and_barˇ
10278    "};
10279    cx.set_state(initial_state);
10280    cx.update_editor(|editor, window, cx| {
10281        editor.show_completions(&ShowCompletions { trigger: None }, window, cx);
10282    });
10283    handle_completion_request_with_insert_and_replace(
10284        &mut cx,
10285        completion_marked_buffer,
10286        vec![completion_text],
10287        Arc::new(AtomicUsize::new(0)),
10288    )
10289    .await;
10290    cx.condition(|editor, _| editor.context_menu_visible())
10291        .await;
10292    let apply_additional_edits = cx.update_editor(|editor, window, cx| {
10293        editor
10294            .confirm_completion_replace(&ConfirmCompletionReplace, window, cx)
10295            .unwrap()
10296    });
10297    cx.assert_editor_state(expected);
10298    handle_resolve_completion_request(&mut cx, None).await;
10299    apply_additional_edits.await.unwrap();
10300
10301    // scenario: surrounding text matches surroundings of newest cursor, inserted at the middle
10302    // (expects the same as if it was inserted at the end)
10303    let completion_text = "foo_and_bar";
10304    let initial_state = indoc! {"
10305        1. ooˇanb
10306        2. zooˇanb
10307        3. ooˇanbz
10308        4. zooˇanbz
10309
10310        ooˇanb
10311    "};
10312    let completion_marked_buffer = indoc! {"
10313        1. ooanb
10314        2. zooanb
10315        3. ooanbz
10316        4. zooanbz
10317
10318        <oo|anb>
10319    "};
10320    let expected = indoc! {"
10321        1. foo_and_barˇ
10322        2. zfoo_and_barˇ
10323        3. foo_and_barˇz
10324        4. zfoo_and_barˇz
10325
10326        foo_and_barˇ
10327    "};
10328    cx.set_state(initial_state);
10329    cx.update_editor(|editor, window, cx| {
10330        editor.show_completions(&ShowCompletions { trigger: None }, window, cx);
10331    });
10332    handle_completion_request_with_insert_and_replace(
10333        &mut cx,
10334        completion_marked_buffer,
10335        vec![completion_text],
10336        Arc::new(AtomicUsize::new(0)),
10337    )
10338    .await;
10339    cx.condition(|editor, _| editor.context_menu_visible())
10340        .await;
10341    let apply_additional_edits = cx.update_editor(|editor, window, cx| {
10342        editor
10343            .confirm_completion_replace(&ConfirmCompletionReplace, window, cx)
10344            .unwrap()
10345    });
10346    cx.assert_editor_state(expected);
10347    handle_resolve_completion_request(&mut cx, None).await;
10348    apply_additional_edits.await.unwrap();
10349}
10350
10351// This used to crash
10352#[gpui::test]
10353async fn test_completion_in_multibuffer_with_replace_range(cx: &mut TestAppContext) {
10354    init_test(cx, |_| {});
10355
10356    let buffer_text = indoc! {"
10357        fn main() {
10358            10.satu;
10359
10360            //
10361            // separate cursors so they open in different excerpts (manually reproducible)
10362            //
10363
10364            10.satu20;
10365        }
10366    "};
10367    let multibuffer_text_with_selections = indoc! {"
10368        fn main() {
10369            10.satuˇ;
10370
10371            //
10372
10373            //
10374
10375            10.satuˇ20;
10376        }
10377    "};
10378    let expected_multibuffer = indoc! {"
10379        fn main() {
10380            10.saturating_sub()ˇ;
10381
10382            //
10383
10384            //
10385
10386            10.saturating_sub()ˇ;
10387        }
10388    "};
10389
10390    let first_excerpt_end = buffer_text.find("//").unwrap() + 3;
10391    let second_excerpt_end = buffer_text.rfind("//").unwrap() - 4;
10392
10393    let fs = FakeFs::new(cx.executor());
10394    fs.insert_tree(
10395        path!("/a"),
10396        json!({
10397            "main.rs": buffer_text,
10398        }),
10399    )
10400    .await;
10401
10402    let project = Project::test(fs, [path!("/a").as_ref()], cx).await;
10403    let language_registry = project.read_with(cx, |project, _| project.languages().clone());
10404    language_registry.add(rust_lang());
10405    let mut fake_servers = language_registry.register_fake_lsp(
10406        "Rust",
10407        FakeLspAdapter {
10408            capabilities: lsp::ServerCapabilities {
10409                completion_provider: Some(lsp::CompletionOptions {
10410                    resolve_provider: None,
10411                    ..lsp::CompletionOptions::default()
10412                }),
10413                ..lsp::ServerCapabilities::default()
10414            },
10415            ..FakeLspAdapter::default()
10416        },
10417    );
10418    let workspace = cx.add_window(|window, cx| Workspace::test_new(project.clone(), window, cx));
10419    let cx = &mut VisualTestContext::from_window(*workspace, cx);
10420    let buffer = project
10421        .update(cx, |project, cx| {
10422            project.open_local_buffer(path!("/a/main.rs"), cx)
10423        })
10424        .await
10425        .unwrap();
10426
10427    let multi_buffer = cx.new(|cx| {
10428        let mut multi_buffer = MultiBuffer::new(Capability::ReadWrite);
10429        multi_buffer.push_excerpts(
10430            buffer.clone(),
10431            [ExcerptRange::new(0..first_excerpt_end)],
10432            cx,
10433        );
10434        multi_buffer.push_excerpts(
10435            buffer.clone(),
10436            [ExcerptRange::new(second_excerpt_end..buffer_text.len())],
10437            cx,
10438        );
10439        multi_buffer
10440    });
10441
10442    let editor = workspace
10443        .update(cx, |_, window, cx| {
10444            cx.new(|cx| {
10445                Editor::new(
10446                    EditorMode::Full {
10447                        scale_ui_elements_with_buffer_font_size: false,
10448                        show_active_line_background: false,
10449                        sized_by_content: false,
10450                    },
10451                    multi_buffer.clone(),
10452                    Some(project.clone()),
10453                    window,
10454                    cx,
10455                )
10456            })
10457        })
10458        .unwrap();
10459
10460    let pane = workspace
10461        .update(cx, |workspace, _, _| workspace.active_pane().clone())
10462        .unwrap();
10463    pane.update_in(cx, |pane, window, cx| {
10464        pane.add_item(Box::new(editor.clone()), true, true, None, window, cx);
10465    });
10466
10467    let fake_server = fake_servers.next().await.unwrap();
10468
10469    editor.update_in(cx, |editor, window, cx| {
10470        editor.change_selections(None, window, cx, |s| {
10471            s.select_ranges([
10472                Point::new(1, 11)..Point::new(1, 11),
10473                Point::new(7, 11)..Point::new(7, 11),
10474            ])
10475        });
10476
10477        assert_text_with_selections(editor, multibuffer_text_with_selections, cx);
10478    });
10479
10480    editor.update_in(cx, |editor, window, cx| {
10481        editor.show_completions(&ShowCompletions { trigger: None }, window, cx);
10482    });
10483
10484    fake_server
10485        .set_request_handler::<lsp::request::Completion, _, _>(move |_, _| async move {
10486            let completion_item = lsp::CompletionItem {
10487                label: "saturating_sub()".into(),
10488                text_edit: Some(lsp::CompletionTextEdit::InsertAndReplace(
10489                    lsp::InsertReplaceEdit {
10490                        new_text: "saturating_sub()".to_owned(),
10491                        insert: lsp::Range::new(
10492                            lsp::Position::new(7, 7),
10493                            lsp::Position::new(7, 11),
10494                        ),
10495                        replace: lsp::Range::new(
10496                            lsp::Position::new(7, 7),
10497                            lsp::Position::new(7, 13),
10498                        ),
10499                    },
10500                )),
10501                ..lsp::CompletionItem::default()
10502            };
10503
10504            Ok(Some(lsp::CompletionResponse::Array(vec![completion_item])))
10505        })
10506        .next()
10507        .await
10508        .unwrap();
10509
10510    cx.condition(&editor, |editor, _| editor.context_menu_visible())
10511        .await;
10512
10513    editor
10514        .update_in(cx, |editor, window, cx| {
10515            editor
10516                .confirm_completion_replace(&ConfirmCompletionReplace, window, cx)
10517                .unwrap()
10518        })
10519        .await
10520        .unwrap();
10521
10522    editor.update(cx, |editor, cx| {
10523        assert_text_with_selections(editor, expected_multibuffer, cx);
10524    })
10525}
10526
10527#[gpui::test]
10528async fn test_completion(cx: &mut TestAppContext) {
10529    init_test(cx, |_| {});
10530
10531    let mut cx = EditorLspTestContext::new_rust(
10532        lsp::ServerCapabilities {
10533            completion_provider: Some(lsp::CompletionOptions {
10534                trigger_characters: Some(vec![".".to_string(), ":".to_string()]),
10535                resolve_provider: Some(true),
10536                ..Default::default()
10537            }),
10538            signature_help_provider: Some(lsp::SignatureHelpOptions::default()),
10539            ..Default::default()
10540        },
10541        cx,
10542    )
10543    .await;
10544    let counter = Arc::new(AtomicUsize::new(0));
10545
10546    cx.set_state(indoc! {"
10547        oneˇ
10548        two
10549        three
10550    "});
10551    cx.simulate_keystroke(".");
10552    handle_completion_request(
10553        &mut cx,
10554        indoc! {"
10555            one.|<>
10556            two
10557            three
10558        "},
10559        vec!["first_completion", "second_completion"],
10560        counter.clone(),
10561    )
10562    .await;
10563    cx.condition(|editor, _| editor.context_menu_visible())
10564        .await;
10565    assert_eq!(counter.load(atomic::Ordering::Acquire), 1);
10566
10567    let _handler = handle_signature_help_request(
10568        &mut cx,
10569        lsp::SignatureHelp {
10570            signatures: vec![lsp::SignatureInformation {
10571                label: "test signature".to_string(),
10572                documentation: None,
10573                parameters: Some(vec![lsp::ParameterInformation {
10574                    label: lsp::ParameterLabel::Simple("foo: u8".to_string()),
10575                    documentation: None,
10576                }]),
10577                active_parameter: None,
10578            }],
10579            active_signature: None,
10580            active_parameter: None,
10581        },
10582    );
10583    cx.update_editor(|editor, window, cx| {
10584        assert!(
10585            !editor.signature_help_state.is_shown(),
10586            "No signature help was called for"
10587        );
10588        editor.show_signature_help(&ShowSignatureHelp, window, cx);
10589    });
10590    cx.run_until_parked();
10591    cx.update_editor(|editor, _, _| {
10592        assert!(
10593            !editor.signature_help_state.is_shown(),
10594            "No signature help should be shown when completions menu is open"
10595        );
10596    });
10597
10598    let apply_additional_edits = cx.update_editor(|editor, window, cx| {
10599        editor.context_menu_next(&Default::default(), window, cx);
10600        editor
10601            .confirm_completion(&ConfirmCompletion::default(), window, cx)
10602            .unwrap()
10603    });
10604    cx.assert_editor_state(indoc! {"
10605        one.second_completionˇ
10606        two
10607        three
10608    "});
10609
10610    handle_resolve_completion_request(
10611        &mut cx,
10612        Some(vec![
10613            (
10614                //This overlaps with the primary completion edit which is
10615                //misbehavior from the LSP spec, test that we filter it out
10616                indoc! {"
10617                    one.second_ˇcompletion
10618                    two
10619                    threeˇ
10620                "},
10621                "overlapping additional edit",
10622            ),
10623            (
10624                indoc! {"
10625                    one.second_completion
10626                    two
10627                    threeˇ
10628                "},
10629                "\nadditional edit",
10630            ),
10631        ]),
10632    )
10633    .await;
10634    apply_additional_edits.await.unwrap();
10635    cx.assert_editor_state(indoc! {"
10636        one.second_completionˇ
10637        two
10638        three
10639        additional edit
10640    "});
10641
10642    cx.set_state(indoc! {"
10643        one.second_completion
10644        twoˇ
10645        threeˇ
10646        additional edit
10647    "});
10648    cx.simulate_keystroke(" ");
10649    assert!(cx.editor(|e, _, _| e.context_menu.borrow_mut().is_none()));
10650    cx.simulate_keystroke("s");
10651    assert!(cx.editor(|e, _, _| e.context_menu.borrow_mut().is_none()));
10652
10653    cx.assert_editor_state(indoc! {"
10654        one.second_completion
10655        two sˇ
10656        three sˇ
10657        additional edit
10658    "});
10659    handle_completion_request(
10660        &mut cx,
10661        indoc! {"
10662            one.second_completion
10663            two s
10664            three <s|>
10665            additional edit
10666        "},
10667        vec!["fourth_completion", "fifth_completion", "sixth_completion"],
10668        counter.clone(),
10669    )
10670    .await;
10671    cx.condition(|editor, _| editor.context_menu_visible())
10672        .await;
10673    assert_eq!(counter.load(atomic::Ordering::Acquire), 2);
10674
10675    cx.simulate_keystroke("i");
10676
10677    handle_completion_request(
10678        &mut cx,
10679        indoc! {"
10680            one.second_completion
10681            two si
10682            three <si|>
10683            additional edit
10684        "},
10685        vec!["fourth_completion", "fifth_completion", "sixth_completion"],
10686        counter.clone(),
10687    )
10688    .await;
10689    cx.condition(|editor, _| editor.context_menu_visible())
10690        .await;
10691    assert_eq!(counter.load(atomic::Ordering::Acquire), 3);
10692
10693    let apply_additional_edits = cx.update_editor(|editor, window, cx| {
10694        editor
10695            .confirm_completion(&ConfirmCompletion::default(), window, cx)
10696            .unwrap()
10697    });
10698    cx.assert_editor_state(indoc! {"
10699        one.second_completion
10700        two sixth_completionˇ
10701        three sixth_completionˇ
10702        additional edit
10703    "});
10704
10705    apply_additional_edits.await.unwrap();
10706
10707    update_test_language_settings(&mut cx, |settings| {
10708        settings.defaults.show_completions_on_input = Some(false);
10709    });
10710    cx.set_state("editorˇ");
10711    cx.simulate_keystroke(".");
10712    assert!(cx.editor(|e, _, _| e.context_menu.borrow_mut().is_none()));
10713    cx.simulate_keystrokes("c l o");
10714    cx.assert_editor_state("editor.cloˇ");
10715    assert!(cx.editor(|e, _, _| e.context_menu.borrow_mut().is_none()));
10716    cx.update_editor(|editor, window, cx| {
10717        editor.show_completions(&ShowCompletions { trigger: None }, window, cx);
10718    });
10719    handle_completion_request(
10720        &mut cx,
10721        "editor.<clo|>",
10722        vec!["close", "clobber"],
10723        counter.clone(),
10724    )
10725    .await;
10726    cx.condition(|editor, _| editor.context_menu_visible())
10727        .await;
10728    assert_eq!(counter.load(atomic::Ordering::Acquire), 4);
10729
10730    let apply_additional_edits = cx.update_editor(|editor, window, cx| {
10731        editor
10732            .confirm_completion(&ConfirmCompletion::default(), window, cx)
10733            .unwrap()
10734    });
10735    cx.assert_editor_state("editor.clobberˇ");
10736    handle_resolve_completion_request(&mut cx, None).await;
10737    apply_additional_edits.await.unwrap();
10738}
10739
10740#[gpui::test]
10741async fn test_word_completion(cx: &mut TestAppContext) {
10742    let lsp_fetch_timeout_ms = 10;
10743    init_test(cx, |language_settings| {
10744        language_settings.defaults.completions = Some(CompletionSettings {
10745            words: WordsCompletionMode::Fallback,
10746            lsp: true,
10747            lsp_fetch_timeout_ms: 10,
10748            lsp_insert_mode: LspInsertMode::Insert,
10749        });
10750    });
10751
10752    let mut cx = EditorLspTestContext::new_rust(
10753        lsp::ServerCapabilities {
10754            completion_provider: Some(lsp::CompletionOptions {
10755                trigger_characters: Some(vec![".".to_string(), ":".to_string()]),
10756                ..lsp::CompletionOptions::default()
10757            }),
10758            signature_help_provider: Some(lsp::SignatureHelpOptions::default()),
10759            ..lsp::ServerCapabilities::default()
10760        },
10761        cx,
10762    )
10763    .await;
10764
10765    let throttle_completions = Arc::new(AtomicBool::new(false));
10766
10767    let lsp_throttle_completions = throttle_completions.clone();
10768    let _completion_requests_handler =
10769        cx.lsp
10770            .server
10771            .on_request::<lsp::request::Completion, _, _>(move |_, cx| {
10772                let lsp_throttle_completions = lsp_throttle_completions.clone();
10773                let cx = cx.clone();
10774                async move {
10775                    if lsp_throttle_completions.load(atomic::Ordering::Acquire) {
10776                        cx.background_executor()
10777                            .timer(Duration::from_millis(lsp_fetch_timeout_ms * 10))
10778                            .await;
10779                    }
10780                    Ok(Some(lsp::CompletionResponse::Array(vec![
10781                        lsp::CompletionItem {
10782                            label: "first".into(),
10783                            ..lsp::CompletionItem::default()
10784                        },
10785                        lsp::CompletionItem {
10786                            label: "last".into(),
10787                            ..lsp::CompletionItem::default()
10788                        },
10789                    ])))
10790                }
10791            });
10792
10793    cx.set_state(indoc! {"
10794        oneˇ
10795        two
10796        three
10797    "});
10798    cx.simulate_keystroke(".");
10799    cx.executor().run_until_parked();
10800    cx.condition(|editor, _| editor.context_menu_visible())
10801        .await;
10802    cx.update_editor(|editor, window, cx| {
10803        if let Some(CodeContextMenu::Completions(menu)) = editor.context_menu.borrow_mut().as_ref()
10804        {
10805            assert_eq!(
10806                completion_menu_entries(&menu),
10807                &["first", "last"],
10808                "When LSP server is fast to reply, no fallback word completions are used"
10809            );
10810        } else {
10811            panic!("expected completion menu to be open");
10812        }
10813        editor.cancel(&Cancel, window, cx);
10814    });
10815    cx.executor().run_until_parked();
10816    cx.condition(|editor, _| !editor.context_menu_visible())
10817        .await;
10818
10819    throttle_completions.store(true, atomic::Ordering::Release);
10820    cx.simulate_keystroke(".");
10821    cx.executor()
10822        .advance_clock(Duration::from_millis(lsp_fetch_timeout_ms * 2));
10823    cx.executor().run_until_parked();
10824    cx.condition(|editor, _| editor.context_menu_visible())
10825        .await;
10826    cx.update_editor(|editor, _, _| {
10827        if let Some(CodeContextMenu::Completions(menu)) = editor.context_menu.borrow_mut().as_ref()
10828        {
10829            assert_eq!(completion_menu_entries(&menu), &["one", "three", "two"],
10830                "When LSP server is slow, document words can be shown instead, if configured accordingly");
10831        } else {
10832            panic!("expected completion menu to be open");
10833        }
10834    });
10835}
10836
10837#[gpui::test]
10838async fn test_word_completions_do_not_duplicate_lsp_ones(cx: &mut TestAppContext) {
10839    init_test(cx, |language_settings| {
10840        language_settings.defaults.completions = Some(CompletionSettings {
10841            words: WordsCompletionMode::Enabled,
10842            lsp: true,
10843            lsp_fetch_timeout_ms: 0,
10844            lsp_insert_mode: LspInsertMode::Insert,
10845        });
10846    });
10847
10848    let mut cx = EditorLspTestContext::new_rust(
10849        lsp::ServerCapabilities {
10850            completion_provider: Some(lsp::CompletionOptions {
10851                trigger_characters: Some(vec![".".to_string(), ":".to_string()]),
10852                ..lsp::CompletionOptions::default()
10853            }),
10854            signature_help_provider: Some(lsp::SignatureHelpOptions::default()),
10855            ..lsp::ServerCapabilities::default()
10856        },
10857        cx,
10858    )
10859    .await;
10860
10861    let _completion_requests_handler =
10862        cx.lsp
10863            .server
10864            .on_request::<lsp::request::Completion, _, _>(move |_, _| async move {
10865                Ok(Some(lsp::CompletionResponse::Array(vec![
10866                    lsp::CompletionItem {
10867                        label: "first".into(),
10868                        ..lsp::CompletionItem::default()
10869                    },
10870                    lsp::CompletionItem {
10871                        label: "last".into(),
10872                        ..lsp::CompletionItem::default()
10873                    },
10874                ])))
10875            });
10876
10877    cx.set_state(indoc! {"ˇ
10878        first
10879        last
10880        second
10881    "});
10882    cx.simulate_keystroke(".");
10883    cx.executor().run_until_parked();
10884    cx.condition(|editor, _| editor.context_menu_visible())
10885        .await;
10886    cx.update_editor(|editor, _, _| {
10887        if let Some(CodeContextMenu::Completions(menu)) = editor.context_menu.borrow_mut().as_ref()
10888        {
10889            assert_eq!(
10890                completion_menu_entries(&menu),
10891                &["first", "last", "second"],
10892                "Word completions that has the same edit as the any of the LSP ones, should not be proposed"
10893            );
10894        } else {
10895            panic!("expected completion menu to be open");
10896        }
10897    });
10898}
10899
10900#[gpui::test]
10901async fn test_word_completions_continue_on_typing(cx: &mut TestAppContext) {
10902    init_test(cx, |language_settings| {
10903        language_settings.defaults.completions = Some(CompletionSettings {
10904            words: WordsCompletionMode::Disabled,
10905            lsp: true,
10906            lsp_fetch_timeout_ms: 0,
10907            lsp_insert_mode: LspInsertMode::Insert,
10908        });
10909    });
10910
10911    let mut cx = EditorLspTestContext::new_rust(
10912        lsp::ServerCapabilities {
10913            completion_provider: Some(lsp::CompletionOptions {
10914                trigger_characters: Some(vec![".".to_string(), ":".to_string()]),
10915                ..lsp::CompletionOptions::default()
10916            }),
10917            signature_help_provider: Some(lsp::SignatureHelpOptions::default()),
10918            ..lsp::ServerCapabilities::default()
10919        },
10920        cx,
10921    )
10922    .await;
10923
10924    let _completion_requests_handler =
10925        cx.lsp
10926            .server
10927            .on_request::<lsp::request::Completion, _, _>(move |_, _| async move {
10928                panic!("LSP completions should not be queried when dealing with word completions")
10929            });
10930
10931    cx.set_state(indoc! {"ˇ
10932        first
10933        last
10934        second
10935    "});
10936    cx.update_editor(|editor, window, cx| {
10937        editor.show_word_completions(&ShowWordCompletions, window, cx);
10938    });
10939    cx.executor().run_until_parked();
10940    cx.condition(|editor, _| editor.context_menu_visible())
10941        .await;
10942    cx.update_editor(|editor, _, _| {
10943        if let Some(CodeContextMenu::Completions(menu)) = editor.context_menu.borrow_mut().as_ref()
10944        {
10945            assert_eq!(
10946                completion_menu_entries(&menu),
10947                &["first", "last", "second"],
10948                "`ShowWordCompletions` action should show word completions"
10949            );
10950        } else {
10951            panic!("expected completion menu to be open");
10952        }
10953    });
10954
10955    cx.simulate_keystroke("l");
10956    cx.executor().run_until_parked();
10957    cx.condition(|editor, _| editor.context_menu_visible())
10958        .await;
10959    cx.update_editor(|editor, _, _| {
10960        if let Some(CodeContextMenu::Completions(menu)) = editor.context_menu.borrow_mut().as_ref()
10961        {
10962            assert_eq!(
10963                completion_menu_entries(&menu),
10964                &["last"],
10965                "After showing word completions, further editing should filter them and not query the LSP"
10966            );
10967        } else {
10968            panic!("expected completion menu to be open");
10969        }
10970    });
10971}
10972
10973#[gpui::test]
10974async fn test_word_completions_usually_skip_digits(cx: &mut TestAppContext) {
10975    init_test(cx, |language_settings| {
10976        language_settings.defaults.completions = Some(CompletionSettings {
10977            words: WordsCompletionMode::Fallback,
10978            lsp: false,
10979            lsp_fetch_timeout_ms: 0,
10980            lsp_insert_mode: LspInsertMode::Insert,
10981        });
10982    });
10983
10984    let mut cx = EditorLspTestContext::new_rust(lsp::ServerCapabilities::default(), cx).await;
10985
10986    cx.set_state(indoc! {"ˇ
10987        0_usize
10988        let
10989        33
10990        4.5f32
10991    "});
10992    cx.update_editor(|editor, window, cx| {
10993        editor.show_completions(&ShowCompletions::default(), window, cx);
10994    });
10995    cx.executor().run_until_parked();
10996    cx.condition(|editor, _| editor.context_menu_visible())
10997        .await;
10998    cx.update_editor(|editor, window, cx| {
10999        if let Some(CodeContextMenu::Completions(menu)) = editor.context_menu.borrow_mut().as_ref()
11000        {
11001            assert_eq!(
11002                completion_menu_entries(&menu),
11003                &["let"],
11004                "With no digits in the completion query, no digits should be in the word completions"
11005            );
11006        } else {
11007            panic!("expected completion menu to be open");
11008        }
11009        editor.cancel(&Cancel, window, cx);
11010    });
11011
11012    cx.set_state(indoc! {"11013        0_usize
11014        let
11015        3
11016        33.35f32
11017    "});
11018    cx.update_editor(|editor, window, cx| {
11019        editor.show_completions(&ShowCompletions::default(), window, cx);
11020    });
11021    cx.executor().run_until_parked();
11022    cx.condition(|editor, _| editor.context_menu_visible())
11023        .await;
11024    cx.update_editor(|editor, _, _| {
11025        if let Some(CodeContextMenu::Completions(menu)) = editor.context_menu.borrow_mut().as_ref()
11026        {
11027            assert_eq!(completion_menu_entries(&menu), &["33", "35f32"], "The digit is in the completion query, \
11028                return matching words with digits (`33`, `35f32`) but exclude query duplicates (`3`)");
11029        } else {
11030            panic!("expected completion menu to be open");
11031        }
11032    });
11033}
11034
11035fn gen_text_edit(params: &CompletionParams, text: &str) -> Option<lsp::CompletionTextEdit> {
11036    let position = || lsp::Position {
11037        line: params.text_document_position.position.line,
11038        character: params.text_document_position.position.character,
11039    };
11040    Some(lsp::CompletionTextEdit::Edit(lsp::TextEdit {
11041        range: lsp::Range {
11042            start: position(),
11043            end: position(),
11044        },
11045        new_text: text.to_string(),
11046    }))
11047}
11048
11049#[gpui::test]
11050async fn test_multiline_completion(cx: &mut TestAppContext) {
11051    init_test(cx, |_| {});
11052
11053    let fs = FakeFs::new(cx.executor());
11054    fs.insert_tree(
11055        path!("/a"),
11056        json!({
11057            "main.ts": "a",
11058        }),
11059    )
11060    .await;
11061
11062    let project = Project::test(fs, [path!("/a").as_ref()], cx).await;
11063    let language_registry = project.read_with(cx, |project, _| project.languages().clone());
11064    let typescript_language = Arc::new(Language::new(
11065        LanguageConfig {
11066            name: "TypeScript".into(),
11067            matcher: LanguageMatcher {
11068                path_suffixes: vec!["ts".to_string()],
11069                ..LanguageMatcher::default()
11070            },
11071            line_comments: vec!["// ".into()],
11072            ..LanguageConfig::default()
11073        },
11074        Some(tree_sitter_typescript::LANGUAGE_TYPESCRIPT.into()),
11075    ));
11076    language_registry.add(typescript_language.clone());
11077    let mut fake_servers = language_registry.register_fake_lsp(
11078        "TypeScript",
11079        FakeLspAdapter {
11080            capabilities: lsp::ServerCapabilities {
11081                completion_provider: Some(lsp::CompletionOptions {
11082                    trigger_characters: Some(vec![".".to_string(), ":".to_string()]),
11083                    ..lsp::CompletionOptions::default()
11084                }),
11085                signature_help_provider: Some(lsp::SignatureHelpOptions::default()),
11086                ..lsp::ServerCapabilities::default()
11087            },
11088            // Emulate vtsls label generation
11089            label_for_completion: Some(Box::new(|item, _| {
11090                let text = if let Some(description) = item
11091                    .label_details
11092                    .as_ref()
11093                    .and_then(|label_details| label_details.description.as_ref())
11094                {
11095                    format!("{} {}", item.label, description)
11096                } else if let Some(detail) = &item.detail {
11097                    format!("{} {}", item.label, detail)
11098                } else {
11099                    item.label.clone()
11100                };
11101                let len = text.len();
11102                Some(language::CodeLabel {
11103                    text,
11104                    runs: Vec::new(),
11105                    filter_range: 0..len,
11106                })
11107            })),
11108            ..FakeLspAdapter::default()
11109        },
11110    );
11111    let workspace = cx.add_window(|window, cx| Workspace::test_new(project.clone(), window, cx));
11112    let cx = &mut VisualTestContext::from_window(*workspace, cx);
11113    let worktree_id = workspace
11114        .update(cx, |workspace, _window, cx| {
11115            workspace.project().update(cx, |project, cx| {
11116                project.worktrees(cx).next().unwrap().read(cx).id()
11117            })
11118        })
11119        .unwrap();
11120    let _buffer = project
11121        .update(cx, |project, cx| {
11122            project.open_local_buffer_with_lsp(path!("/a/main.ts"), cx)
11123        })
11124        .await
11125        .unwrap();
11126    let editor = workspace
11127        .update(cx, |workspace, window, cx| {
11128            workspace.open_path((worktree_id, "main.ts"), None, true, window, cx)
11129        })
11130        .unwrap()
11131        .await
11132        .unwrap()
11133        .downcast::<Editor>()
11134        .unwrap();
11135    let fake_server = fake_servers.next().await.unwrap();
11136
11137    let multiline_label = "StickyHeaderExcerpt {\n            excerpt,\n            next_excerpt_controls_present,\n            next_buffer_row,\n        }: StickyHeaderExcerpt<'_>,";
11138    let multiline_label_2 = "a\nb\nc\n";
11139    let multiline_detail = "[]struct {\n\tSignerId\tstruct {\n\t\tIssuer\t\t\tstring\t`json:\"issuer\"`\n\t\tSubjectSerialNumber\"`\n}}";
11140    let multiline_description = "d\ne\nf\n";
11141    let multiline_detail_2 = "g\nh\ni\n";
11142
11143    let mut completion_handle = fake_server.set_request_handler::<lsp::request::Completion, _, _>(
11144        move |params, _| async move {
11145            Ok(Some(lsp::CompletionResponse::Array(vec![
11146                lsp::CompletionItem {
11147                    label: multiline_label.to_string(),
11148                    text_edit: gen_text_edit(&params, "new_text_1"),
11149                    ..lsp::CompletionItem::default()
11150                },
11151                lsp::CompletionItem {
11152                    label: "single line label 1".to_string(),
11153                    detail: Some(multiline_detail.to_string()),
11154                    text_edit: gen_text_edit(&params, "new_text_2"),
11155                    ..lsp::CompletionItem::default()
11156                },
11157                lsp::CompletionItem {
11158                    label: "single line label 2".to_string(),
11159                    label_details: Some(lsp::CompletionItemLabelDetails {
11160                        description: Some(multiline_description.to_string()),
11161                        detail: None,
11162                    }),
11163                    text_edit: gen_text_edit(&params, "new_text_2"),
11164                    ..lsp::CompletionItem::default()
11165                },
11166                lsp::CompletionItem {
11167                    label: multiline_label_2.to_string(),
11168                    detail: Some(multiline_detail_2.to_string()),
11169                    text_edit: gen_text_edit(&params, "new_text_3"),
11170                    ..lsp::CompletionItem::default()
11171                },
11172                lsp::CompletionItem {
11173                    label: "Label with many     spaces and \t but without newlines".to_string(),
11174                    detail: Some(
11175                        "Details with many     spaces and \t but without newlines".to_string(),
11176                    ),
11177                    text_edit: gen_text_edit(&params, "new_text_4"),
11178                    ..lsp::CompletionItem::default()
11179                },
11180            ])))
11181        },
11182    );
11183
11184    editor.update_in(cx, |editor, window, cx| {
11185        cx.focus_self(window);
11186        editor.move_to_end(&MoveToEnd, window, cx);
11187        editor.handle_input(".", window, cx);
11188    });
11189    cx.run_until_parked();
11190    completion_handle.next().await.unwrap();
11191
11192    editor.update(cx, |editor, _| {
11193        assert!(editor.context_menu_visible());
11194        if let Some(CodeContextMenu::Completions(menu)) = editor.context_menu.borrow_mut().as_ref()
11195        {
11196            let completion_labels = menu
11197                .completions
11198                .borrow()
11199                .iter()
11200                .map(|c| c.label.text.clone())
11201                .collect::<Vec<_>>();
11202            assert_eq!(
11203                completion_labels,
11204                &[
11205                    "StickyHeaderExcerpt { excerpt, next_excerpt_controls_present, next_buffer_row, }: StickyHeaderExcerpt<'_>,",
11206                    "single line label 1 []struct { SignerId struct { Issuer string `json:\"issuer\"` SubjectSerialNumber\"` }}",
11207                    "single line label 2 d e f ",
11208                    "a b c g h i ",
11209                    "Label with many     spaces and \t but without newlines Details with many     spaces and \t but without newlines",
11210                ],
11211                "Completion items should have their labels without newlines, also replacing excessive whitespaces. Completion items without newlines should not be altered.",
11212            );
11213
11214            for completion in menu
11215                .completions
11216                .borrow()
11217                .iter() {
11218                    assert_eq!(
11219                        completion.label.filter_range,
11220                        0..completion.label.text.len(),
11221                        "Adjusted completion items should still keep their filter ranges for the entire label. Item: {completion:?}"
11222                    );
11223                }
11224        } else {
11225            panic!("expected completion menu to be open");
11226        }
11227    });
11228}
11229
11230#[gpui::test]
11231async fn test_completion_page_up_down_keys(cx: &mut TestAppContext) {
11232    init_test(cx, |_| {});
11233    let mut cx = EditorLspTestContext::new_rust(
11234        lsp::ServerCapabilities {
11235            completion_provider: Some(lsp::CompletionOptions {
11236                trigger_characters: Some(vec![".".to_string()]),
11237                ..Default::default()
11238            }),
11239            ..Default::default()
11240        },
11241        cx,
11242    )
11243    .await;
11244    cx.lsp
11245        .set_request_handler::<lsp::request::Completion, _, _>(move |_, _| async move {
11246            Ok(Some(lsp::CompletionResponse::Array(vec![
11247                lsp::CompletionItem {
11248                    label: "first".into(),
11249                    ..Default::default()
11250                },
11251                lsp::CompletionItem {
11252                    label: "last".into(),
11253                    ..Default::default()
11254                },
11255            ])))
11256        });
11257    cx.set_state("variableˇ");
11258    cx.simulate_keystroke(".");
11259    cx.executor().run_until_parked();
11260
11261    cx.update_editor(|editor, _, _| {
11262        if let Some(CodeContextMenu::Completions(menu)) = editor.context_menu.borrow_mut().as_ref()
11263        {
11264            assert_eq!(completion_menu_entries(&menu), &["first", "last"]);
11265        } else {
11266            panic!("expected completion menu to be open");
11267        }
11268    });
11269
11270    cx.update_editor(|editor, window, cx| {
11271        editor.move_page_down(&MovePageDown::default(), window, cx);
11272        if let Some(CodeContextMenu::Completions(menu)) = editor.context_menu.borrow_mut().as_ref()
11273        {
11274            assert!(
11275                menu.selected_item == 1,
11276                "expected PageDown to select the last item from the context menu"
11277            );
11278        } else {
11279            panic!("expected completion menu to stay open after PageDown");
11280        }
11281    });
11282
11283    cx.update_editor(|editor, window, cx| {
11284        editor.move_page_up(&MovePageUp::default(), window, cx);
11285        if let Some(CodeContextMenu::Completions(menu)) = editor.context_menu.borrow_mut().as_ref()
11286        {
11287            assert!(
11288                menu.selected_item == 0,
11289                "expected PageUp to select the first item from the context menu"
11290            );
11291        } else {
11292            panic!("expected completion menu to stay open after PageUp");
11293        }
11294    });
11295}
11296
11297#[gpui::test]
11298async fn test_as_is_completions(cx: &mut TestAppContext) {
11299    init_test(cx, |_| {});
11300    let mut cx = EditorLspTestContext::new_rust(
11301        lsp::ServerCapabilities {
11302            completion_provider: Some(lsp::CompletionOptions {
11303                ..Default::default()
11304            }),
11305            ..Default::default()
11306        },
11307        cx,
11308    )
11309    .await;
11310    cx.lsp
11311        .set_request_handler::<lsp::request::Completion, _, _>(move |_, _| async move {
11312            Ok(Some(lsp::CompletionResponse::Array(vec![
11313                lsp::CompletionItem {
11314                    label: "unsafe".into(),
11315                    text_edit: Some(lsp::CompletionTextEdit::Edit(lsp::TextEdit {
11316                        range: lsp::Range {
11317                            start: lsp::Position {
11318                                line: 1,
11319                                character: 2,
11320                            },
11321                            end: lsp::Position {
11322                                line: 1,
11323                                character: 3,
11324                            },
11325                        },
11326                        new_text: "unsafe".to_string(),
11327                    })),
11328                    insert_text_mode: Some(lsp::InsertTextMode::AS_IS),
11329                    ..Default::default()
11330                },
11331            ])))
11332        });
11333    cx.set_state("fn a() {}\n");
11334    cx.executor().run_until_parked();
11335    cx.update_editor(|editor, window, cx| {
11336        editor.show_completions(
11337            &ShowCompletions {
11338                trigger: Some("\n".into()),
11339            },
11340            window,
11341            cx,
11342        );
11343    });
11344    cx.executor().run_until_parked();
11345
11346    cx.update_editor(|editor, window, cx| {
11347        editor.confirm_completion(&Default::default(), window, cx)
11348    });
11349    cx.executor().run_until_parked();
11350    cx.assert_editor_state("fn a() {}\n  unsafeˇ");
11351}
11352
11353#[gpui::test]
11354async fn test_no_duplicated_completion_requests(cx: &mut TestAppContext) {
11355    init_test(cx, |_| {});
11356
11357    let mut cx = EditorLspTestContext::new_rust(
11358        lsp::ServerCapabilities {
11359            completion_provider: Some(lsp::CompletionOptions {
11360                trigger_characters: Some(vec![".".to_string()]),
11361                resolve_provider: Some(true),
11362                ..Default::default()
11363            }),
11364            ..Default::default()
11365        },
11366        cx,
11367    )
11368    .await;
11369
11370    cx.set_state("fn main() { let a = 2ˇ; }");
11371    cx.simulate_keystroke(".");
11372    let completion_item = lsp::CompletionItem {
11373        label: "Some".into(),
11374        kind: Some(lsp::CompletionItemKind::SNIPPET),
11375        detail: Some("Wrap the expression in an `Option::Some`".to_string()),
11376        documentation: Some(lsp::Documentation::MarkupContent(lsp::MarkupContent {
11377            kind: lsp::MarkupKind::Markdown,
11378            value: "```rust\nSome(2)\n```".to_string(),
11379        })),
11380        deprecated: Some(false),
11381        sort_text: Some("Some".to_string()),
11382        filter_text: Some("Some".to_string()),
11383        insert_text_format: Some(lsp::InsertTextFormat::SNIPPET),
11384        text_edit: Some(lsp::CompletionTextEdit::Edit(lsp::TextEdit {
11385            range: lsp::Range {
11386                start: lsp::Position {
11387                    line: 0,
11388                    character: 22,
11389                },
11390                end: lsp::Position {
11391                    line: 0,
11392                    character: 22,
11393                },
11394            },
11395            new_text: "Some(2)".to_string(),
11396        })),
11397        additional_text_edits: Some(vec![lsp::TextEdit {
11398            range: lsp::Range {
11399                start: lsp::Position {
11400                    line: 0,
11401                    character: 20,
11402                },
11403                end: lsp::Position {
11404                    line: 0,
11405                    character: 22,
11406                },
11407            },
11408            new_text: "".to_string(),
11409        }]),
11410        ..Default::default()
11411    };
11412
11413    let closure_completion_item = completion_item.clone();
11414    let counter = Arc::new(AtomicUsize::new(0));
11415    let counter_clone = counter.clone();
11416    let mut request = cx.set_request_handler::<lsp::request::Completion, _, _>(move |_, _, _| {
11417        let task_completion_item = closure_completion_item.clone();
11418        counter_clone.fetch_add(1, atomic::Ordering::Release);
11419        async move {
11420            Ok(Some(lsp::CompletionResponse::Array(vec![
11421                task_completion_item,
11422            ])))
11423        }
11424    });
11425
11426    cx.condition(|editor, _| editor.context_menu_visible())
11427        .await;
11428    cx.assert_editor_state("fn main() { let a = 2.ˇ; }");
11429    assert!(request.next().await.is_some());
11430    assert_eq!(counter.load(atomic::Ordering::Acquire), 1);
11431
11432    cx.simulate_keystrokes("S o m");
11433    cx.condition(|editor, _| editor.context_menu_visible())
11434        .await;
11435    cx.assert_editor_state("fn main() { let a = 2.Somˇ; }");
11436    assert!(request.next().await.is_some());
11437    assert!(request.next().await.is_some());
11438    assert!(request.next().await.is_some());
11439    request.close();
11440    assert!(request.next().await.is_none());
11441    assert_eq!(
11442        counter.load(atomic::Ordering::Acquire),
11443        4,
11444        "With the completions menu open, only one LSP request should happen per input"
11445    );
11446}
11447
11448#[gpui::test]
11449async fn test_toggle_comment(cx: &mut TestAppContext) {
11450    init_test(cx, |_| {});
11451    let mut cx = EditorTestContext::new(cx).await;
11452    let language = Arc::new(Language::new(
11453        LanguageConfig {
11454            line_comments: vec!["// ".into(), "//! ".into(), "/// ".into()],
11455            ..Default::default()
11456        },
11457        Some(tree_sitter_rust::LANGUAGE.into()),
11458    ));
11459    cx.update_buffer(|buffer, cx| buffer.set_language(Some(language), cx));
11460
11461    // If multiple selections intersect a line, the line is only toggled once.
11462    cx.set_state(indoc! {"
11463        fn a() {
11464            «//b();
11465            ˇ»// «c();
11466            //ˇ»  d();
11467        }
11468    "});
11469
11470    cx.update_editor(|e, window, cx| e.toggle_comments(&ToggleComments::default(), window, cx));
11471
11472    cx.assert_editor_state(indoc! {"
11473        fn a() {
11474            «b();
11475            c();
11476            ˇ» d();
11477        }
11478    "});
11479
11480    // The comment prefix is inserted at the same column for every line in a
11481    // selection.
11482    cx.update_editor(|e, window, cx| e.toggle_comments(&ToggleComments::default(), window, cx));
11483
11484    cx.assert_editor_state(indoc! {"
11485        fn a() {
11486            // «b();
11487            // c();
11488            ˇ»//  d();
11489        }
11490    "});
11491
11492    // If a selection ends at the beginning of a line, that line is not toggled.
11493    cx.set_selections_state(indoc! {"
11494        fn a() {
11495            // b();
11496            «// c();
11497        ˇ»    //  d();
11498        }
11499    "});
11500
11501    cx.update_editor(|e, window, cx| e.toggle_comments(&ToggleComments::default(), window, cx));
11502
11503    cx.assert_editor_state(indoc! {"
11504        fn a() {
11505            // b();
11506            «c();
11507        ˇ»    //  d();
11508        }
11509    "});
11510
11511    // If a selection span a single line and is empty, the line is toggled.
11512    cx.set_state(indoc! {"
11513        fn a() {
11514            a();
11515            b();
11516        ˇ
11517        }
11518    "});
11519
11520    cx.update_editor(|e, window, cx| e.toggle_comments(&ToggleComments::default(), window, cx));
11521
11522    cx.assert_editor_state(indoc! {"
11523        fn a() {
11524            a();
11525            b();
11526        //•ˇ
11527        }
11528    "});
11529
11530    // If a selection span multiple lines, empty lines are not toggled.
11531    cx.set_state(indoc! {"
11532        fn a() {
11533            «a();
11534
11535            c();ˇ»
11536        }
11537    "});
11538
11539    cx.update_editor(|e, window, cx| e.toggle_comments(&ToggleComments::default(), window, cx));
11540
11541    cx.assert_editor_state(indoc! {"
11542        fn a() {
11543            // «a();
11544
11545            // c();ˇ»
11546        }
11547    "});
11548
11549    // If a selection includes multiple comment prefixes, all lines are uncommented.
11550    cx.set_state(indoc! {"
11551        fn a() {
11552            «// a();
11553            /// b();
11554            //! c();ˇ»
11555        }
11556    "});
11557
11558    cx.update_editor(|e, window, cx| e.toggle_comments(&ToggleComments::default(), window, cx));
11559
11560    cx.assert_editor_state(indoc! {"
11561        fn a() {
11562            «a();
11563            b();
11564            c();ˇ»
11565        }
11566    "});
11567}
11568
11569#[gpui::test]
11570async fn test_toggle_comment_ignore_indent(cx: &mut TestAppContext) {
11571    init_test(cx, |_| {});
11572    let mut cx = EditorTestContext::new(cx).await;
11573    let language = Arc::new(Language::new(
11574        LanguageConfig {
11575            line_comments: vec!["// ".into(), "//! ".into(), "/// ".into()],
11576            ..Default::default()
11577        },
11578        Some(tree_sitter_rust::LANGUAGE.into()),
11579    ));
11580    cx.update_buffer(|buffer, cx| buffer.set_language(Some(language), cx));
11581
11582    let toggle_comments = &ToggleComments {
11583        advance_downwards: false,
11584        ignore_indent: true,
11585    };
11586
11587    // If multiple selections intersect a line, the line is only toggled once.
11588    cx.set_state(indoc! {"
11589        fn a() {
11590        //    «b();
11591        //    c();
11592        //    ˇ» d();
11593        }
11594    "});
11595
11596    cx.update_editor(|e, window, cx| e.toggle_comments(toggle_comments, window, cx));
11597
11598    cx.assert_editor_state(indoc! {"
11599        fn a() {
11600            «b();
11601            c();
11602            ˇ» d();
11603        }
11604    "});
11605
11606    // The comment prefix is inserted at the beginning of each line
11607    cx.update_editor(|e, window, cx| e.toggle_comments(toggle_comments, window, cx));
11608
11609    cx.assert_editor_state(indoc! {"
11610        fn a() {
11611        //    «b();
11612        //    c();
11613        //    ˇ» d();
11614        }
11615    "});
11616
11617    // If a selection ends at the beginning of a line, that line is not toggled.
11618    cx.set_selections_state(indoc! {"
11619        fn a() {
11620        //    b();
11621        //    «c();
11622        ˇ»//     d();
11623        }
11624    "});
11625
11626    cx.update_editor(|e, window, cx| e.toggle_comments(toggle_comments, window, cx));
11627
11628    cx.assert_editor_state(indoc! {"
11629        fn a() {
11630        //    b();
11631            «c();
11632        ˇ»//     d();
11633        }
11634    "});
11635
11636    // If a selection span a single line and is empty, the line is toggled.
11637    cx.set_state(indoc! {"
11638        fn a() {
11639            a();
11640            b();
11641        ˇ
11642        }
11643    "});
11644
11645    cx.update_editor(|e, window, cx| e.toggle_comments(toggle_comments, window, cx));
11646
11647    cx.assert_editor_state(indoc! {"
11648        fn a() {
11649            a();
11650            b();
11651        //ˇ
11652        }
11653    "});
11654
11655    // If a selection span multiple lines, empty lines are not toggled.
11656    cx.set_state(indoc! {"
11657        fn a() {
11658            «a();
11659
11660            c();ˇ»
11661        }
11662    "});
11663
11664    cx.update_editor(|e, window, cx| e.toggle_comments(toggle_comments, window, cx));
11665
11666    cx.assert_editor_state(indoc! {"
11667        fn a() {
11668        //    «a();
11669
11670        //    c();ˇ»
11671        }
11672    "});
11673
11674    // If a selection includes multiple comment prefixes, all lines are uncommented.
11675    cx.set_state(indoc! {"
11676        fn a() {
11677        //    «a();
11678        ///    b();
11679        //!    c();ˇ»
11680        }
11681    "});
11682
11683    cx.update_editor(|e, window, cx| e.toggle_comments(toggle_comments, window, cx));
11684
11685    cx.assert_editor_state(indoc! {"
11686        fn a() {
11687            «a();
11688            b();
11689            c();ˇ»
11690        }
11691    "});
11692}
11693
11694#[gpui::test]
11695async fn test_advance_downward_on_toggle_comment(cx: &mut TestAppContext) {
11696    init_test(cx, |_| {});
11697
11698    let language = Arc::new(Language::new(
11699        LanguageConfig {
11700            line_comments: vec!["// ".into()],
11701            ..Default::default()
11702        },
11703        Some(tree_sitter_rust::LANGUAGE.into()),
11704    ));
11705
11706    let mut cx = EditorTestContext::new(cx).await;
11707
11708    cx.language_registry().add(language.clone());
11709    cx.update_buffer(|buffer, cx| {
11710        buffer.set_language(Some(language), cx);
11711    });
11712
11713    let toggle_comments = &ToggleComments {
11714        advance_downwards: true,
11715        ignore_indent: false,
11716    };
11717
11718    // Single cursor on one line -> advance
11719    // Cursor moves horizontally 3 characters as well on non-blank line
11720    cx.set_state(indoc!(
11721        "fn a() {
11722             ˇdog();
11723             cat();
11724        }"
11725    ));
11726    cx.update_editor(|editor, window, cx| {
11727        editor.toggle_comments(toggle_comments, window, cx);
11728    });
11729    cx.assert_editor_state(indoc!(
11730        "fn a() {
11731             // dog();
11732             catˇ();
11733        }"
11734    ));
11735
11736    // Single selection on one line -> don't advance
11737    cx.set_state(indoc!(
11738        "fn a() {
11739             «dog()ˇ»;
11740             cat();
11741        }"
11742    ));
11743    cx.update_editor(|editor, window, cx| {
11744        editor.toggle_comments(toggle_comments, window, cx);
11745    });
11746    cx.assert_editor_state(indoc!(
11747        "fn a() {
11748             // «dog()ˇ»;
11749             cat();
11750        }"
11751    ));
11752
11753    // Multiple cursors on one line -> advance
11754    cx.set_state(indoc!(
11755        "fn a() {
11756             ˇdˇog();
11757             cat();
11758        }"
11759    ));
11760    cx.update_editor(|editor, window, cx| {
11761        editor.toggle_comments(toggle_comments, window, cx);
11762    });
11763    cx.assert_editor_state(indoc!(
11764        "fn a() {
11765             // dog();
11766             catˇ(ˇ);
11767        }"
11768    ));
11769
11770    // Multiple cursors on one line, with selection -> don't advance
11771    cx.set_state(indoc!(
11772        "fn a() {
11773             ˇdˇog«()ˇ»;
11774             cat();
11775        }"
11776    ));
11777    cx.update_editor(|editor, window, cx| {
11778        editor.toggle_comments(toggle_comments, window, cx);
11779    });
11780    cx.assert_editor_state(indoc!(
11781        "fn a() {
11782             // ˇdˇog«()ˇ»;
11783             cat();
11784        }"
11785    ));
11786
11787    // Single cursor on one line -> advance
11788    // Cursor moves to column 0 on blank line
11789    cx.set_state(indoc!(
11790        "fn a() {
11791             ˇdog();
11792
11793             cat();
11794        }"
11795    ));
11796    cx.update_editor(|editor, window, cx| {
11797        editor.toggle_comments(toggle_comments, window, cx);
11798    });
11799    cx.assert_editor_state(indoc!(
11800        "fn a() {
11801             // dog();
11802        ˇ
11803             cat();
11804        }"
11805    ));
11806
11807    // Single cursor on one line -> advance
11808    // Cursor starts and ends at column 0
11809    cx.set_state(indoc!(
11810        "fn a() {
11811         ˇ    dog();
11812             cat();
11813        }"
11814    ));
11815    cx.update_editor(|editor, window, cx| {
11816        editor.toggle_comments(toggle_comments, window, cx);
11817    });
11818    cx.assert_editor_state(indoc!(
11819        "fn a() {
11820             // dog();
11821         ˇ    cat();
11822        }"
11823    ));
11824}
11825
11826#[gpui::test]
11827async fn test_toggle_block_comment(cx: &mut TestAppContext) {
11828    init_test(cx, |_| {});
11829
11830    let mut cx = EditorTestContext::new(cx).await;
11831
11832    let html_language = Arc::new(
11833        Language::new(
11834            LanguageConfig {
11835                name: "HTML".into(),
11836                block_comment: Some(("<!-- ".into(), " -->".into())),
11837                ..Default::default()
11838            },
11839            Some(tree_sitter_html::LANGUAGE.into()),
11840        )
11841        .with_injection_query(
11842            r#"
11843            (script_element
11844                (raw_text) @injection.content
11845                (#set! injection.language "javascript"))
11846            "#,
11847        )
11848        .unwrap(),
11849    );
11850
11851    let javascript_language = Arc::new(Language::new(
11852        LanguageConfig {
11853            name: "JavaScript".into(),
11854            line_comments: vec!["// ".into()],
11855            ..Default::default()
11856        },
11857        Some(tree_sitter_typescript::LANGUAGE_TSX.into()),
11858    ));
11859
11860    cx.language_registry().add(html_language.clone());
11861    cx.language_registry().add(javascript_language.clone());
11862    cx.update_buffer(|buffer, cx| {
11863        buffer.set_language(Some(html_language), cx);
11864    });
11865
11866    // Toggle comments for empty selections
11867    cx.set_state(
11868        &r#"
11869            <p>A</p>ˇ
11870            <p>B</p>ˇ
11871            <p>C</p>ˇ
11872        "#
11873        .unindent(),
11874    );
11875    cx.update_editor(|editor, window, cx| {
11876        editor.toggle_comments(&ToggleComments::default(), window, cx)
11877    });
11878    cx.assert_editor_state(
11879        &r#"
11880            <!-- <p>A</p>ˇ -->
11881            <!-- <p>B</p>ˇ -->
11882            <!-- <p>C</p>ˇ -->
11883        "#
11884        .unindent(),
11885    );
11886    cx.update_editor(|editor, window, cx| {
11887        editor.toggle_comments(&ToggleComments::default(), window, cx)
11888    });
11889    cx.assert_editor_state(
11890        &r#"
11891            <p>A</p>ˇ
11892            <p>B</p>ˇ
11893            <p>C</p>ˇ
11894        "#
11895        .unindent(),
11896    );
11897
11898    // Toggle comments for mixture of empty and non-empty selections, where
11899    // multiple selections occupy a given line.
11900    cx.set_state(
11901        &r#"
11902            <p>A«</p>
11903            <p>ˇ»B</p>ˇ
11904            <p>C«</p>
11905            <p>ˇ»D</p>ˇ
11906        "#
11907        .unindent(),
11908    );
11909
11910    cx.update_editor(|editor, window, cx| {
11911        editor.toggle_comments(&ToggleComments::default(), window, cx)
11912    });
11913    cx.assert_editor_state(
11914        &r#"
11915            <!-- <p>A«</p>
11916            <p>ˇ»B</p>ˇ -->
11917            <!-- <p>C«</p>
11918            <p>ˇ»D</p>ˇ -->
11919        "#
11920        .unindent(),
11921    );
11922    cx.update_editor(|editor, window, cx| {
11923        editor.toggle_comments(&ToggleComments::default(), window, cx)
11924    });
11925    cx.assert_editor_state(
11926        &r#"
11927            <p>A«</p>
11928            <p>ˇ»B</p>ˇ
11929            <p>C«</p>
11930            <p>ˇ»D</p>ˇ
11931        "#
11932        .unindent(),
11933    );
11934
11935    // Toggle comments when different languages are active for different
11936    // selections.
11937    cx.set_state(
11938        &r#"
11939            ˇ<script>
11940                ˇvar x = new Y();
11941            ˇ</script>
11942        "#
11943        .unindent(),
11944    );
11945    cx.executor().run_until_parked();
11946    cx.update_editor(|editor, window, cx| {
11947        editor.toggle_comments(&ToggleComments::default(), window, cx)
11948    });
11949    // TODO this is how it actually worked in Zed Stable, which is not very ergonomic.
11950    // Uncommenting and commenting from this position brings in even more wrong artifacts.
11951    cx.assert_editor_state(
11952        &r#"
11953            <!-- ˇ<script> -->
11954                // ˇvar x = new Y();
11955            <!-- ˇ</script> -->
11956        "#
11957        .unindent(),
11958    );
11959}
11960
11961#[gpui::test]
11962fn test_editing_disjoint_excerpts(cx: &mut TestAppContext) {
11963    init_test(cx, |_| {});
11964
11965    let buffer = cx.new(|cx| Buffer::local(sample_text(3, 4, 'a'), cx));
11966    let multibuffer = cx.new(|cx| {
11967        let mut multibuffer = MultiBuffer::new(ReadWrite);
11968        multibuffer.push_excerpts(
11969            buffer.clone(),
11970            [
11971                ExcerptRange::new(Point::new(0, 0)..Point::new(0, 4)),
11972                ExcerptRange::new(Point::new(1, 0)..Point::new(1, 4)),
11973            ],
11974            cx,
11975        );
11976        assert_eq!(multibuffer.read(cx).text(), "aaaa\nbbbb");
11977        multibuffer
11978    });
11979
11980    let (editor, cx) = cx.add_window_view(|window, cx| build_editor(multibuffer, window, cx));
11981    editor.update_in(cx, |editor, window, cx| {
11982        assert_eq!(editor.text(cx), "aaaa\nbbbb");
11983        editor.change_selections(None, window, cx, |s| {
11984            s.select_ranges([
11985                Point::new(0, 0)..Point::new(0, 0),
11986                Point::new(1, 0)..Point::new(1, 0),
11987            ])
11988        });
11989
11990        editor.handle_input("X", window, cx);
11991        assert_eq!(editor.text(cx), "Xaaaa\nXbbbb");
11992        assert_eq!(
11993            editor.selections.ranges(cx),
11994            [
11995                Point::new(0, 1)..Point::new(0, 1),
11996                Point::new(1, 1)..Point::new(1, 1),
11997            ]
11998        );
11999
12000        // Ensure the cursor's head is respected when deleting across an excerpt boundary.
12001        editor.change_selections(None, window, cx, |s| {
12002            s.select_ranges([Point::new(0, 2)..Point::new(1, 2)])
12003        });
12004        editor.backspace(&Default::default(), window, cx);
12005        assert_eq!(editor.text(cx), "Xa\nbbb");
12006        assert_eq!(
12007            editor.selections.ranges(cx),
12008            [Point::new(1, 0)..Point::new(1, 0)]
12009        );
12010
12011        editor.change_selections(None, window, cx, |s| {
12012            s.select_ranges([Point::new(1, 1)..Point::new(0, 1)])
12013        });
12014        editor.backspace(&Default::default(), window, cx);
12015        assert_eq!(editor.text(cx), "X\nbb");
12016        assert_eq!(
12017            editor.selections.ranges(cx),
12018            [Point::new(0, 1)..Point::new(0, 1)]
12019        );
12020    });
12021}
12022
12023#[gpui::test]
12024fn test_editing_overlapping_excerpts(cx: &mut TestAppContext) {
12025    init_test(cx, |_| {});
12026
12027    let markers = vec![('[', ']').into(), ('(', ')').into()];
12028    let (initial_text, mut excerpt_ranges) = marked_text_ranges_by(
12029        indoc! {"
12030            [aaaa
12031            (bbbb]
12032            cccc)",
12033        },
12034        markers.clone(),
12035    );
12036    let excerpt_ranges = markers.into_iter().map(|marker| {
12037        let context = excerpt_ranges.remove(&marker).unwrap()[0].clone();
12038        ExcerptRange::new(context.clone())
12039    });
12040    let buffer = cx.new(|cx| Buffer::local(initial_text, cx));
12041    let multibuffer = cx.new(|cx| {
12042        let mut multibuffer = MultiBuffer::new(ReadWrite);
12043        multibuffer.push_excerpts(buffer, excerpt_ranges, cx);
12044        multibuffer
12045    });
12046
12047    let (editor, cx) = cx.add_window_view(|window, cx| build_editor(multibuffer, window, cx));
12048    editor.update_in(cx, |editor, window, cx| {
12049        let (expected_text, selection_ranges) = marked_text_ranges(
12050            indoc! {"
12051                aaaa
12052                bˇbbb
12053                bˇbbˇb
12054                cccc"
12055            },
12056            true,
12057        );
12058        assert_eq!(editor.text(cx), expected_text);
12059        editor.change_selections(None, window, cx, |s| s.select_ranges(selection_ranges));
12060
12061        editor.handle_input("X", window, cx);
12062
12063        let (expected_text, expected_selections) = marked_text_ranges(
12064            indoc! {"
12065                aaaa
12066                bXˇbbXb
12067                bXˇbbXˇb
12068                cccc"
12069            },
12070            false,
12071        );
12072        assert_eq!(editor.text(cx), expected_text);
12073        assert_eq!(editor.selections.ranges(cx), expected_selections);
12074
12075        editor.newline(&Newline, window, cx);
12076        let (expected_text, expected_selections) = marked_text_ranges(
12077            indoc! {"
12078                aaaa
12079                bX
12080                ˇbbX
12081                b
12082                bX
12083                ˇbbX
12084                ˇb
12085                cccc"
12086            },
12087            false,
12088        );
12089        assert_eq!(editor.text(cx), expected_text);
12090        assert_eq!(editor.selections.ranges(cx), expected_selections);
12091    });
12092}
12093
12094#[gpui::test]
12095fn test_refresh_selections(cx: &mut TestAppContext) {
12096    init_test(cx, |_| {});
12097
12098    let buffer = cx.new(|cx| Buffer::local(sample_text(3, 4, 'a'), cx));
12099    let mut excerpt1_id = None;
12100    let multibuffer = cx.new(|cx| {
12101        let mut multibuffer = MultiBuffer::new(ReadWrite);
12102        excerpt1_id = multibuffer
12103            .push_excerpts(
12104                buffer.clone(),
12105                [
12106                    ExcerptRange::new(Point::new(0, 0)..Point::new(1, 4)),
12107                    ExcerptRange::new(Point::new(1, 0)..Point::new(2, 4)),
12108                ],
12109                cx,
12110            )
12111            .into_iter()
12112            .next();
12113        assert_eq!(multibuffer.read(cx).text(), "aaaa\nbbbb\nbbbb\ncccc");
12114        multibuffer
12115    });
12116
12117    let editor = cx.add_window(|window, cx| {
12118        let mut editor = build_editor(multibuffer.clone(), window, cx);
12119        let snapshot = editor.snapshot(window, cx);
12120        editor.change_selections(None, window, cx, |s| {
12121            s.select_ranges([Point::new(1, 3)..Point::new(1, 3)])
12122        });
12123        editor.begin_selection(
12124            Point::new(2, 1).to_display_point(&snapshot),
12125            true,
12126            1,
12127            window,
12128            cx,
12129        );
12130        assert_eq!(
12131            editor.selections.ranges(cx),
12132            [
12133                Point::new(1, 3)..Point::new(1, 3),
12134                Point::new(2, 1)..Point::new(2, 1),
12135            ]
12136        );
12137        editor
12138    });
12139
12140    // Refreshing selections is a no-op when excerpts haven't changed.
12141    _ = editor.update(cx, |editor, window, cx| {
12142        editor.change_selections(None, window, cx, |s| s.refresh());
12143        assert_eq!(
12144            editor.selections.ranges(cx),
12145            [
12146                Point::new(1, 3)..Point::new(1, 3),
12147                Point::new(2, 1)..Point::new(2, 1),
12148            ]
12149        );
12150    });
12151
12152    multibuffer.update(cx, |multibuffer, cx| {
12153        multibuffer.remove_excerpts([excerpt1_id.unwrap()], cx);
12154    });
12155    _ = editor.update(cx, |editor, window, cx| {
12156        // Removing an excerpt causes the first selection to become degenerate.
12157        assert_eq!(
12158            editor.selections.ranges(cx),
12159            [
12160                Point::new(0, 0)..Point::new(0, 0),
12161                Point::new(0, 1)..Point::new(0, 1)
12162            ]
12163        );
12164
12165        // Refreshing selections will relocate the first selection to the original buffer
12166        // location.
12167        editor.change_selections(None, window, cx, |s| s.refresh());
12168        assert_eq!(
12169            editor.selections.ranges(cx),
12170            [
12171                Point::new(0, 1)..Point::new(0, 1),
12172                Point::new(0, 3)..Point::new(0, 3)
12173            ]
12174        );
12175        assert!(editor.selections.pending_anchor().is_some());
12176    });
12177}
12178
12179#[gpui::test]
12180fn test_refresh_selections_while_selecting_with_mouse(cx: &mut TestAppContext) {
12181    init_test(cx, |_| {});
12182
12183    let buffer = cx.new(|cx| Buffer::local(sample_text(3, 4, 'a'), cx));
12184    let mut excerpt1_id = None;
12185    let multibuffer = cx.new(|cx| {
12186        let mut multibuffer = MultiBuffer::new(ReadWrite);
12187        excerpt1_id = multibuffer
12188            .push_excerpts(
12189                buffer.clone(),
12190                [
12191                    ExcerptRange::new(Point::new(0, 0)..Point::new(1, 4)),
12192                    ExcerptRange::new(Point::new(1, 0)..Point::new(2, 4)),
12193                ],
12194                cx,
12195            )
12196            .into_iter()
12197            .next();
12198        assert_eq!(multibuffer.read(cx).text(), "aaaa\nbbbb\nbbbb\ncccc");
12199        multibuffer
12200    });
12201
12202    let editor = cx.add_window(|window, cx| {
12203        let mut editor = build_editor(multibuffer.clone(), window, cx);
12204        let snapshot = editor.snapshot(window, cx);
12205        editor.begin_selection(
12206            Point::new(1, 3).to_display_point(&snapshot),
12207            false,
12208            1,
12209            window,
12210            cx,
12211        );
12212        assert_eq!(
12213            editor.selections.ranges(cx),
12214            [Point::new(1, 3)..Point::new(1, 3)]
12215        );
12216        editor
12217    });
12218
12219    multibuffer.update(cx, |multibuffer, cx| {
12220        multibuffer.remove_excerpts([excerpt1_id.unwrap()], cx);
12221    });
12222    _ = editor.update(cx, |editor, window, cx| {
12223        assert_eq!(
12224            editor.selections.ranges(cx),
12225            [Point::new(0, 0)..Point::new(0, 0)]
12226        );
12227
12228        // Ensure we don't panic when selections are refreshed and that the pending selection is finalized.
12229        editor.change_selections(None, window, cx, |s| s.refresh());
12230        assert_eq!(
12231            editor.selections.ranges(cx),
12232            [Point::new(0, 3)..Point::new(0, 3)]
12233        );
12234        assert!(editor.selections.pending_anchor().is_some());
12235    });
12236}
12237
12238#[gpui::test]
12239async fn test_extra_newline_insertion(cx: &mut TestAppContext) {
12240    init_test(cx, |_| {});
12241
12242    let language = Arc::new(
12243        Language::new(
12244            LanguageConfig {
12245                brackets: BracketPairConfig {
12246                    pairs: vec![
12247                        BracketPair {
12248                            start: "{".to_string(),
12249                            end: "}".to_string(),
12250                            close: true,
12251                            surround: true,
12252                            newline: true,
12253                        },
12254                        BracketPair {
12255                            start: "/* ".to_string(),
12256                            end: " */".to_string(),
12257                            close: true,
12258                            surround: true,
12259                            newline: true,
12260                        },
12261                    ],
12262                    ..Default::default()
12263                },
12264                ..Default::default()
12265            },
12266            Some(tree_sitter_rust::LANGUAGE.into()),
12267        )
12268        .with_indents_query("")
12269        .unwrap(),
12270    );
12271
12272    let text = concat!(
12273        "{   }\n",     //
12274        "  x\n",       //
12275        "  /*   */\n", //
12276        "x\n",         //
12277        "{{} }\n",     //
12278    );
12279
12280    let buffer = cx.new(|cx| Buffer::local(text, cx).with_language(language, cx));
12281    let buffer = cx.new(|cx| MultiBuffer::singleton(buffer, cx));
12282    let (editor, cx) = cx.add_window_view(|window, cx| build_editor(buffer, window, cx));
12283    editor
12284        .condition::<crate::EditorEvent>(cx, |editor, cx| !editor.buffer.read(cx).is_parsing(cx))
12285        .await;
12286
12287    editor.update_in(cx, |editor, window, cx| {
12288        editor.change_selections(None, window, cx, |s| {
12289            s.select_display_ranges([
12290                DisplayPoint::new(DisplayRow(0), 2)..DisplayPoint::new(DisplayRow(0), 3),
12291                DisplayPoint::new(DisplayRow(2), 5)..DisplayPoint::new(DisplayRow(2), 5),
12292                DisplayPoint::new(DisplayRow(4), 4)..DisplayPoint::new(DisplayRow(4), 4),
12293            ])
12294        });
12295        editor.newline(&Newline, window, cx);
12296
12297        assert_eq!(
12298            editor.buffer().read(cx).read(cx).text(),
12299            concat!(
12300                "{ \n",    // Suppress rustfmt
12301                "\n",      //
12302                "}\n",     //
12303                "  x\n",   //
12304                "  /* \n", //
12305                "  \n",    //
12306                "  */\n",  //
12307                "x\n",     //
12308                "{{} \n",  //
12309                "}\n",     //
12310            )
12311        );
12312    });
12313}
12314
12315#[gpui::test]
12316fn test_highlighted_ranges(cx: &mut TestAppContext) {
12317    init_test(cx, |_| {});
12318
12319    let editor = cx.add_window(|window, cx| {
12320        let buffer = MultiBuffer::build_simple(&sample_text(16, 8, 'a'), cx);
12321        build_editor(buffer.clone(), window, cx)
12322    });
12323
12324    _ = editor.update(cx, |editor, window, cx| {
12325        struct Type1;
12326        struct Type2;
12327
12328        let buffer = editor.buffer.read(cx).snapshot(cx);
12329
12330        let anchor_range =
12331            |range: Range<Point>| buffer.anchor_after(range.start)..buffer.anchor_after(range.end);
12332
12333        editor.highlight_background::<Type1>(
12334            &[
12335                anchor_range(Point::new(2, 1)..Point::new(2, 3)),
12336                anchor_range(Point::new(4, 2)..Point::new(4, 4)),
12337                anchor_range(Point::new(6, 3)..Point::new(6, 5)),
12338                anchor_range(Point::new(8, 4)..Point::new(8, 6)),
12339            ],
12340            |_| Hsla::red(),
12341            cx,
12342        );
12343        editor.highlight_background::<Type2>(
12344            &[
12345                anchor_range(Point::new(3, 2)..Point::new(3, 5)),
12346                anchor_range(Point::new(5, 3)..Point::new(5, 6)),
12347                anchor_range(Point::new(7, 4)..Point::new(7, 7)),
12348                anchor_range(Point::new(9, 5)..Point::new(9, 8)),
12349            ],
12350            |_| Hsla::green(),
12351            cx,
12352        );
12353
12354        let snapshot = editor.snapshot(window, cx);
12355        let mut highlighted_ranges = editor.background_highlights_in_range(
12356            anchor_range(Point::new(3, 4)..Point::new(7, 4)),
12357            &snapshot,
12358            cx.theme().colors(),
12359        );
12360        // Enforce a consistent ordering based on color without relying on the ordering of the
12361        // highlight's `TypeId` which is non-executor.
12362        highlighted_ranges.sort_unstable_by_key(|(_, color)| *color);
12363        assert_eq!(
12364            highlighted_ranges,
12365            &[
12366                (
12367                    DisplayPoint::new(DisplayRow(4), 2)..DisplayPoint::new(DisplayRow(4), 4),
12368                    Hsla::red(),
12369                ),
12370                (
12371                    DisplayPoint::new(DisplayRow(6), 3)..DisplayPoint::new(DisplayRow(6), 5),
12372                    Hsla::red(),
12373                ),
12374                (
12375                    DisplayPoint::new(DisplayRow(3), 2)..DisplayPoint::new(DisplayRow(3), 5),
12376                    Hsla::green(),
12377                ),
12378                (
12379                    DisplayPoint::new(DisplayRow(5), 3)..DisplayPoint::new(DisplayRow(5), 6),
12380                    Hsla::green(),
12381                ),
12382            ]
12383        );
12384        assert_eq!(
12385            editor.background_highlights_in_range(
12386                anchor_range(Point::new(5, 6)..Point::new(6, 4)),
12387                &snapshot,
12388                cx.theme().colors(),
12389            ),
12390            &[(
12391                DisplayPoint::new(DisplayRow(6), 3)..DisplayPoint::new(DisplayRow(6), 5),
12392                Hsla::red(),
12393            )]
12394        );
12395    });
12396}
12397
12398#[gpui::test]
12399async fn test_following(cx: &mut TestAppContext) {
12400    init_test(cx, |_| {});
12401
12402    let fs = FakeFs::new(cx.executor());
12403    let project = Project::test(fs, ["/file.rs".as_ref()], cx).await;
12404
12405    let buffer = project.update(cx, |project, cx| {
12406        let buffer = project.create_local_buffer(&sample_text(16, 8, 'a'), None, cx);
12407        cx.new(|cx| MultiBuffer::singleton(buffer, cx))
12408    });
12409    let leader = cx.add_window(|window, cx| build_editor(buffer.clone(), window, cx));
12410    let follower = cx.update(|cx| {
12411        cx.open_window(
12412            WindowOptions {
12413                window_bounds: Some(WindowBounds::Windowed(Bounds::from_corners(
12414                    gpui::Point::new(px(0.), px(0.)),
12415                    gpui::Point::new(px(10.), px(80.)),
12416                ))),
12417                ..Default::default()
12418            },
12419            |window, cx| cx.new(|cx| build_editor(buffer.clone(), window, cx)),
12420        )
12421        .unwrap()
12422    });
12423
12424    let is_still_following = Rc::new(RefCell::new(true));
12425    let follower_edit_event_count = Rc::new(RefCell::new(0));
12426    let pending_update = Rc::new(RefCell::new(None));
12427    let leader_entity = leader.root(cx).unwrap();
12428    let follower_entity = follower.root(cx).unwrap();
12429    _ = follower.update(cx, {
12430        let update = pending_update.clone();
12431        let is_still_following = is_still_following.clone();
12432        let follower_edit_event_count = follower_edit_event_count.clone();
12433        |_, window, cx| {
12434            cx.subscribe_in(
12435                &leader_entity,
12436                window,
12437                move |_, leader, event, window, cx| {
12438                    leader.read(cx).add_event_to_update_proto(
12439                        event,
12440                        &mut update.borrow_mut(),
12441                        window,
12442                        cx,
12443                    );
12444                },
12445            )
12446            .detach();
12447
12448            cx.subscribe_in(
12449                &follower_entity,
12450                window,
12451                move |_, _, event: &EditorEvent, _window, _cx| {
12452                    if matches!(Editor::to_follow_event(event), Some(FollowEvent::Unfollow)) {
12453                        *is_still_following.borrow_mut() = false;
12454                    }
12455
12456                    if let EditorEvent::BufferEdited = event {
12457                        *follower_edit_event_count.borrow_mut() += 1;
12458                    }
12459                },
12460            )
12461            .detach();
12462        }
12463    });
12464
12465    // Update the selections only
12466    _ = leader.update(cx, |leader, window, cx| {
12467        leader.change_selections(None, window, cx, |s| s.select_ranges([1..1]));
12468    });
12469    follower
12470        .update(cx, |follower, window, cx| {
12471            follower.apply_update_proto(
12472                &project,
12473                pending_update.borrow_mut().take().unwrap(),
12474                window,
12475                cx,
12476            )
12477        })
12478        .unwrap()
12479        .await
12480        .unwrap();
12481    _ = follower.update(cx, |follower, _, cx| {
12482        assert_eq!(follower.selections.ranges(cx), vec![1..1]);
12483    });
12484    assert!(*is_still_following.borrow());
12485    assert_eq!(*follower_edit_event_count.borrow(), 0);
12486
12487    // Update the scroll position only
12488    _ = leader.update(cx, |leader, window, cx| {
12489        leader.set_scroll_position(gpui::Point::new(1.5, 3.5), window, cx);
12490    });
12491    follower
12492        .update(cx, |follower, window, cx| {
12493            follower.apply_update_proto(
12494                &project,
12495                pending_update.borrow_mut().take().unwrap(),
12496                window,
12497                cx,
12498            )
12499        })
12500        .unwrap()
12501        .await
12502        .unwrap();
12503    assert_eq!(
12504        follower
12505            .update(cx, |follower, _, cx| follower.scroll_position(cx))
12506            .unwrap(),
12507        gpui::Point::new(1.5, 3.5)
12508    );
12509    assert!(*is_still_following.borrow());
12510    assert_eq!(*follower_edit_event_count.borrow(), 0);
12511
12512    // Update the selections and scroll position. The follower's scroll position is updated
12513    // via autoscroll, not via the leader's exact scroll position.
12514    _ = leader.update(cx, |leader, window, cx| {
12515        leader.change_selections(None, window, cx, |s| s.select_ranges([0..0]));
12516        leader.request_autoscroll(Autoscroll::newest(), cx);
12517        leader.set_scroll_position(gpui::Point::new(1.5, 3.5), window, cx);
12518    });
12519    follower
12520        .update(cx, |follower, window, cx| {
12521            follower.apply_update_proto(
12522                &project,
12523                pending_update.borrow_mut().take().unwrap(),
12524                window,
12525                cx,
12526            )
12527        })
12528        .unwrap()
12529        .await
12530        .unwrap();
12531    _ = follower.update(cx, |follower, _, cx| {
12532        assert_eq!(follower.scroll_position(cx), gpui::Point::new(1.5, 0.0));
12533        assert_eq!(follower.selections.ranges(cx), vec![0..0]);
12534    });
12535    assert!(*is_still_following.borrow());
12536
12537    // Creating a pending selection that precedes another selection
12538    _ = leader.update(cx, |leader, window, cx| {
12539        leader.change_selections(None, window, cx, |s| s.select_ranges([1..1]));
12540        leader.begin_selection(DisplayPoint::new(DisplayRow(0), 0), true, 1, window, cx);
12541    });
12542    follower
12543        .update(cx, |follower, window, cx| {
12544            follower.apply_update_proto(
12545                &project,
12546                pending_update.borrow_mut().take().unwrap(),
12547                window,
12548                cx,
12549            )
12550        })
12551        .unwrap()
12552        .await
12553        .unwrap();
12554    _ = follower.update(cx, |follower, _, cx| {
12555        assert_eq!(follower.selections.ranges(cx), vec![0..0, 1..1]);
12556    });
12557    assert!(*is_still_following.borrow());
12558
12559    // Extend the pending selection so that it surrounds another selection
12560    _ = leader.update(cx, |leader, window, cx| {
12561        leader.extend_selection(DisplayPoint::new(DisplayRow(0), 2), 1, window, cx);
12562    });
12563    follower
12564        .update(cx, |follower, window, cx| {
12565            follower.apply_update_proto(
12566                &project,
12567                pending_update.borrow_mut().take().unwrap(),
12568                window,
12569                cx,
12570            )
12571        })
12572        .unwrap()
12573        .await
12574        .unwrap();
12575    _ = follower.update(cx, |follower, _, cx| {
12576        assert_eq!(follower.selections.ranges(cx), vec![0..2]);
12577    });
12578
12579    // Scrolling locally breaks the follow
12580    _ = follower.update(cx, |follower, window, cx| {
12581        let top_anchor = follower.buffer().read(cx).read(cx).anchor_after(0);
12582        follower.set_scroll_anchor(
12583            ScrollAnchor {
12584                anchor: top_anchor,
12585                offset: gpui::Point::new(0.0, 0.5),
12586            },
12587            window,
12588            cx,
12589        );
12590    });
12591    assert!(!(*is_still_following.borrow()));
12592}
12593
12594#[gpui::test]
12595async fn test_following_with_multiple_excerpts(cx: &mut TestAppContext) {
12596    init_test(cx, |_| {});
12597
12598    let fs = FakeFs::new(cx.executor());
12599    let project = Project::test(fs, ["/file.rs".as_ref()], cx).await;
12600    let workspace = cx.add_window(|window, cx| Workspace::test_new(project.clone(), window, cx));
12601    let pane = workspace
12602        .update(cx, |workspace, _, _| workspace.active_pane().clone())
12603        .unwrap();
12604
12605    let cx = &mut VisualTestContext::from_window(*workspace.deref(), cx);
12606
12607    let leader = pane.update_in(cx, |_, window, cx| {
12608        let multibuffer = cx.new(|_| MultiBuffer::new(ReadWrite));
12609        cx.new(|cx| build_editor(multibuffer.clone(), window, cx))
12610    });
12611
12612    // Start following the editor when it has no excerpts.
12613    let mut state_message =
12614        leader.update_in(cx, |leader, window, cx| leader.to_state_proto(window, cx));
12615    let workspace_entity = workspace.root(cx).unwrap();
12616    let follower_1 = cx
12617        .update_window(*workspace.deref(), |_, window, cx| {
12618            Editor::from_state_proto(
12619                workspace_entity,
12620                ViewId {
12621                    creator: Default::default(),
12622                    id: 0,
12623                },
12624                &mut state_message,
12625                window,
12626                cx,
12627            )
12628        })
12629        .unwrap()
12630        .unwrap()
12631        .await
12632        .unwrap();
12633
12634    let update_message = Rc::new(RefCell::new(None));
12635    follower_1.update_in(cx, {
12636        let update = update_message.clone();
12637        |_, window, cx| {
12638            cx.subscribe_in(&leader, window, move |_, leader, event, window, cx| {
12639                leader.read(cx).add_event_to_update_proto(
12640                    event,
12641                    &mut update.borrow_mut(),
12642                    window,
12643                    cx,
12644                );
12645            })
12646            .detach();
12647        }
12648    });
12649
12650    let (buffer_1, buffer_2) = project.update(cx, |project, cx| {
12651        (
12652            project.create_local_buffer("abc\ndef\nghi\njkl\n", None, cx),
12653            project.create_local_buffer("mno\npqr\nstu\nvwx\n", None, cx),
12654        )
12655    });
12656
12657    // Insert some excerpts.
12658    leader.update(cx, |leader, cx| {
12659        leader.buffer.update(cx, |multibuffer, cx| {
12660            multibuffer.set_excerpts_for_path(
12661                PathKey::namespaced(1, Arc::from(Path::new("b.txt"))),
12662                buffer_1.clone(),
12663                vec![
12664                    Point::row_range(0..3),
12665                    Point::row_range(1..6),
12666                    Point::row_range(12..15),
12667                ],
12668                0,
12669                cx,
12670            );
12671            multibuffer.set_excerpts_for_path(
12672                PathKey::namespaced(1, Arc::from(Path::new("a.txt"))),
12673                buffer_2.clone(),
12674                vec![Point::row_range(0..6), Point::row_range(8..12)],
12675                0,
12676                cx,
12677            );
12678        });
12679    });
12680
12681    // Apply the update of adding the excerpts.
12682    follower_1
12683        .update_in(cx, |follower, window, cx| {
12684            follower.apply_update_proto(
12685                &project,
12686                update_message.borrow().clone().unwrap(),
12687                window,
12688                cx,
12689            )
12690        })
12691        .await
12692        .unwrap();
12693    assert_eq!(
12694        follower_1.update(cx, |editor, cx| editor.text(cx)),
12695        leader.update(cx, |editor, cx| editor.text(cx))
12696    );
12697    update_message.borrow_mut().take();
12698
12699    // Start following separately after it already has excerpts.
12700    let mut state_message =
12701        leader.update_in(cx, |leader, window, cx| leader.to_state_proto(window, cx));
12702    let workspace_entity = workspace.root(cx).unwrap();
12703    let follower_2 = cx
12704        .update_window(*workspace.deref(), |_, window, cx| {
12705            Editor::from_state_proto(
12706                workspace_entity,
12707                ViewId {
12708                    creator: Default::default(),
12709                    id: 0,
12710                },
12711                &mut state_message,
12712                window,
12713                cx,
12714            )
12715        })
12716        .unwrap()
12717        .unwrap()
12718        .await
12719        .unwrap();
12720    assert_eq!(
12721        follower_2.update(cx, |editor, cx| editor.text(cx)),
12722        leader.update(cx, |editor, cx| editor.text(cx))
12723    );
12724
12725    // Remove some excerpts.
12726    leader.update(cx, |leader, cx| {
12727        leader.buffer.update(cx, |multibuffer, cx| {
12728            let excerpt_ids = multibuffer.excerpt_ids();
12729            multibuffer.remove_excerpts([excerpt_ids[1], excerpt_ids[2]], cx);
12730            multibuffer.remove_excerpts([excerpt_ids[0]], cx);
12731        });
12732    });
12733
12734    // Apply the update of removing the excerpts.
12735    follower_1
12736        .update_in(cx, |follower, window, cx| {
12737            follower.apply_update_proto(
12738                &project,
12739                update_message.borrow().clone().unwrap(),
12740                window,
12741                cx,
12742            )
12743        })
12744        .await
12745        .unwrap();
12746    follower_2
12747        .update_in(cx, |follower, window, cx| {
12748            follower.apply_update_proto(
12749                &project,
12750                update_message.borrow().clone().unwrap(),
12751                window,
12752                cx,
12753            )
12754        })
12755        .await
12756        .unwrap();
12757    update_message.borrow_mut().take();
12758    assert_eq!(
12759        follower_1.update(cx, |editor, cx| editor.text(cx)),
12760        leader.update(cx, |editor, cx| editor.text(cx))
12761    );
12762}
12763
12764#[gpui::test]
12765async fn go_to_prev_overlapping_diagnostic(executor: BackgroundExecutor, cx: &mut TestAppContext) {
12766    init_test(cx, |_| {});
12767
12768    let mut cx = EditorTestContext::new(cx).await;
12769    let lsp_store =
12770        cx.update_editor(|editor, _, cx| editor.project.as_ref().unwrap().read(cx).lsp_store());
12771
12772    cx.set_state(indoc! {"
12773        ˇfn func(abc def: i32) -> u32 {
12774        }
12775    "});
12776
12777    cx.update(|_, cx| {
12778        lsp_store.update(cx, |lsp_store, cx| {
12779            lsp_store
12780                .update_diagnostics(
12781                    LanguageServerId(0),
12782                    lsp::PublishDiagnosticsParams {
12783                        uri: lsp::Url::from_file_path(path!("/root/file")).unwrap(),
12784                        version: None,
12785                        diagnostics: vec![
12786                            lsp::Diagnostic {
12787                                range: lsp::Range::new(
12788                                    lsp::Position::new(0, 11),
12789                                    lsp::Position::new(0, 12),
12790                                ),
12791                                severity: Some(lsp::DiagnosticSeverity::ERROR),
12792                                ..Default::default()
12793                            },
12794                            lsp::Diagnostic {
12795                                range: lsp::Range::new(
12796                                    lsp::Position::new(0, 12),
12797                                    lsp::Position::new(0, 15),
12798                                ),
12799                                severity: Some(lsp::DiagnosticSeverity::ERROR),
12800                                ..Default::default()
12801                            },
12802                            lsp::Diagnostic {
12803                                range: lsp::Range::new(
12804                                    lsp::Position::new(0, 25),
12805                                    lsp::Position::new(0, 28),
12806                                ),
12807                                severity: Some(lsp::DiagnosticSeverity::ERROR),
12808                                ..Default::default()
12809                            },
12810                        ],
12811                    },
12812                    &[],
12813                    cx,
12814                )
12815                .unwrap()
12816        });
12817    });
12818
12819    executor.run_until_parked();
12820
12821    cx.update_editor(|editor, window, cx| {
12822        editor.go_to_prev_diagnostic(&GoToPreviousDiagnostic, window, cx);
12823    });
12824
12825    cx.assert_editor_state(indoc! {"
12826        fn func(abc def: i32) -> ˇu32 {
12827        }
12828    "});
12829
12830    cx.update_editor(|editor, window, cx| {
12831        editor.go_to_prev_diagnostic(&GoToPreviousDiagnostic, window, cx);
12832    });
12833
12834    cx.assert_editor_state(indoc! {"
12835        fn func(abc ˇdef: i32) -> u32 {
12836        }
12837    "});
12838
12839    cx.update_editor(|editor, window, cx| {
12840        editor.go_to_prev_diagnostic(&GoToPreviousDiagnostic, window, cx);
12841    });
12842
12843    cx.assert_editor_state(indoc! {"
12844        fn func(abcˇ def: i32) -> u32 {
12845        }
12846    "});
12847
12848    cx.update_editor(|editor, window, cx| {
12849        editor.go_to_prev_diagnostic(&GoToPreviousDiagnostic, window, cx);
12850    });
12851
12852    cx.assert_editor_state(indoc! {"
12853        fn func(abc def: i32) -> ˇu32 {
12854        }
12855    "});
12856}
12857
12858#[gpui::test]
12859async fn test_diagnostics_with_links(cx: &mut TestAppContext) {
12860    init_test(cx, |_| {});
12861
12862    let mut cx = EditorTestContext::new(cx).await;
12863
12864    cx.set_state(indoc! {"
12865        fn func(abˇc def: i32) -> u32 {
12866        }
12867    "});
12868    let lsp_store =
12869        cx.update_editor(|editor, _, cx| editor.project.as_ref().unwrap().read(cx).lsp_store());
12870
12871    cx.update(|_, cx| {
12872        lsp_store.update(cx, |lsp_store, cx| {
12873            lsp_store.update_diagnostics(
12874                LanguageServerId(0),
12875                lsp::PublishDiagnosticsParams {
12876                    uri: lsp::Url::from_file_path(path!("/root/file")).unwrap(),
12877                    version: None,
12878                    diagnostics: vec![lsp::Diagnostic {
12879                        range: lsp::Range::new(lsp::Position::new(0, 8), lsp::Position::new(0, 12)),
12880                        severity: Some(lsp::DiagnosticSeverity::ERROR),
12881                        message: "we've had problems with <https://link.one>, and <https://link.two> is broken".to_string(),
12882                        ..Default::default()
12883                    }],
12884                },
12885                &[],
12886                cx,
12887            )
12888        })
12889    }).unwrap();
12890    cx.run_until_parked();
12891    cx.update_editor(|editor, window, cx| {
12892        hover_popover::hover(editor, &Default::default(), window, cx)
12893    });
12894    cx.run_until_parked();
12895    cx.update_editor(|editor, _, _| assert!(editor.hover_state.diagnostic_popover.is_some()))
12896}
12897
12898#[gpui::test]
12899async fn test_go_to_hunk(executor: BackgroundExecutor, cx: &mut TestAppContext) {
12900    init_test(cx, |_| {});
12901
12902    let mut cx = EditorTestContext::new(cx).await;
12903
12904    let diff_base = r#"
12905        use some::mod;
12906
12907        const A: u32 = 42;
12908
12909        fn main() {
12910            println!("hello");
12911
12912            println!("world");
12913        }
12914        "#
12915    .unindent();
12916
12917    // Edits are modified, removed, modified, added
12918    cx.set_state(
12919        &r#"
12920        use some::modified;
12921
12922        ˇ
12923        fn main() {
12924            println!("hello there");
12925
12926            println!("around the");
12927            println!("world");
12928        }
12929        "#
12930        .unindent(),
12931    );
12932
12933    cx.set_head_text(&diff_base);
12934    executor.run_until_parked();
12935
12936    cx.update_editor(|editor, window, cx| {
12937        //Wrap around the bottom of the buffer
12938        for _ in 0..3 {
12939            editor.go_to_next_hunk(&GoToHunk, window, cx);
12940        }
12941    });
12942
12943    cx.assert_editor_state(
12944        &r#"
12945        ˇuse some::modified;
12946
12947
12948        fn main() {
12949            println!("hello there");
12950
12951            println!("around the");
12952            println!("world");
12953        }
12954        "#
12955        .unindent(),
12956    );
12957
12958    cx.update_editor(|editor, window, cx| {
12959        //Wrap around the top of the buffer
12960        for _ in 0..2 {
12961            editor.go_to_prev_hunk(&GoToPreviousHunk, window, cx);
12962        }
12963    });
12964
12965    cx.assert_editor_state(
12966        &r#"
12967        use some::modified;
12968
12969
12970        fn main() {
12971        ˇ    println!("hello there");
12972
12973            println!("around the");
12974            println!("world");
12975        }
12976        "#
12977        .unindent(),
12978    );
12979
12980    cx.update_editor(|editor, window, cx| {
12981        editor.go_to_prev_hunk(&GoToPreviousHunk, window, cx);
12982    });
12983
12984    cx.assert_editor_state(
12985        &r#"
12986        use some::modified;
12987
12988        ˇ
12989        fn main() {
12990            println!("hello there");
12991
12992            println!("around the");
12993            println!("world");
12994        }
12995        "#
12996        .unindent(),
12997    );
12998
12999    cx.update_editor(|editor, window, cx| {
13000        editor.go_to_prev_hunk(&GoToPreviousHunk, window, cx);
13001    });
13002
13003    cx.assert_editor_state(
13004        &r#"
13005        ˇuse some::modified;
13006
13007
13008        fn main() {
13009            println!("hello there");
13010
13011            println!("around the");
13012            println!("world");
13013        }
13014        "#
13015        .unindent(),
13016    );
13017
13018    cx.update_editor(|editor, window, cx| {
13019        for _ in 0..2 {
13020            editor.go_to_prev_hunk(&GoToPreviousHunk, window, cx);
13021        }
13022    });
13023
13024    cx.assert_editor_state(
13025        &r#"
13026        use some::modified;
13027
13028
13029        fn main() {
13030        ˇ    println!("hello there");
13031
13032            println!("around the");
13033            println!("world");
13034        }
13035        "#
13036        .unindent(),
13037    );
13038
13039    cx.update_editor(|editor, window, cx| {
13040        editor.fold(&Fold, window, cx);
13041    });
13042
13043    cx.update_editor(|editor, window, cx| {
13044        editor.go_to_next_hunk(&GoToHunk, window, cx);
13045    });
13046
13047    cx.assert_editor_state(
13048        &r#"
13049        ˇuse some::modified;
13050
13051
13052        fn main() {
13053            println!("hello there");
13054
13055            println!("around the");
13056            println!("world");
13057        }
13058        "#
13059        .unindent(),
13060    );
13061}
13062
13063#[test]
13064fn test_split_words() {
13065    fn split(text: &str) -> Vec<&str> {
13066        split_words(text).collect()
13067    }
13068
13069    assert_eq!(split("HelloWorld"), &["Hello", "World"]);
13070    assert_eq!(split("hello_world"), &["hello_", "world"]);
13071    assert_eq!(split("_hello_world_"), &["_", "hello_", "world_"]);
13072    assert_eq!(split("Hello_World"), &["Hello_", "World"]);
13073    assert_eq!(split("helloWOrld"), &["hello", "WOrld"]);
13074    assert_eq!(split("helloworld"), &["helloworld"]);
13075
13076    assert_eq!(split(":do_the_thing"), &[":", "do_", "the_", "thing"]);
13077}
13078
13079#[gpui::test]
13080async fn test_move_to_enclosing_bracket(cx: &mut TestAppContext) {
13081    init_test(cx, |_| {});
13082
13083    let mut cx = EditorLspTestContext::new_typescript(Default::default(), cx).await;
13084    let mut assert = |before, after| {
13085        let _state_context = cx.set_state(before);
13086        cx.run_until_parked();
13087        cx.update_editor(|editor, window, cx| {
13088            editor.move_to_enclosing_bracket(&MoveToEnclosingBracket, window, cx)
13089        });
13090        cx.run_until_parked();
13091        cx.assert_editor_state(after);
13092    };
13093
13094    // Outside bracket jumps to outside of matching bracket
13095    assert("console.logˇ(var);", "console.log(var)ˇ;");
13096    assert("console.log(var)ˇ;", "console.logˇ(var);");
13097
13098    // Inside bracket jumps to inside of matching bracket
13099    assert("console.log(ˇvar);", "console.log(varˇ);");
13100    assert("console.log(varˇ);", "console.log(ˇvar);");
13101
13102    // When outside a bracket and inside, favor jumping to the inside bracket
13103    assert(
13104        "console.log('foo', [1, 2, 3]ˇ);",
13105        "console.log(ˇ'foo', [1, 2, 3]);",
13106    );
13107    assert(
13108        "console.log(ˇ'foo', [1, 2, 3]);",
13109        "console.log('foo', [1, 2, 3]ˇ);",
13110    );
13111
13112    // Bias forward if two options are equally likely
13113    assert(
13114        "let result = curried_fun()ˇ();",
13115        "let result = curried_fun()()ˇ;",
13116    );
13117
13118    // If directly adjacent to a smaller pair but inside a larger (not adjacent), pick the smaller
13119    assert(
13120        indoc! {"
13121            function test() {
13122                console.log('test')ˇ
13123            }"},
13124        indoc! {"
13125            function test() {
13126                console.logˇ('test')
13127            }"},
13128    );
13129}
13130
13131#[gpui::test]
13132async fn test_on_type_formatting_not_triggered(cx: &mut TestAppContext) {
13133    init_test(cx, |_| {});
13134
13135    let fs = FakeFs::new(cx.executor());
13136    fs.insert_tree(
13137        path!("/a"),
13138        json!({
13139            "main.rs": "fn main() { let a = 5; }",
13140            "other.rs": "// Test file",
13141        }),
13142    )
13143    .await;
13144    let project = Project::test(fs, [path!("/a").as_ref()], cx).await;
13145
13146    let language_registry = project.read_with(cx, |project, _| project.languages().clone());
13147    language_registry.add(Arc::new(Language::new(
13148        LanguageConfig {
13149            name: "Rust".into(),
13150            matcher: LanguageMatcher {
13151                path_suffixes: vec!["rs".to_string()],
13152                ..Default::default()
13153            },
13154            brackets: BracketPairConfig {
13155                pairs: vec![BracketPair {
13156                    start: "{".to_string(),
13157                    end: "}".to_string(),
13158                    close: true,
13159                    surround: true,
13160                    newline: true,
13161                }],
13162                disabled_scopes_by_bracket_ix: Vec::new(),
13163            },
13164            ..Default::default()
13165        },
13166        Some(tree_sitter_rust::LANGUAGE.into()),
13167    )));
13168    let mut fake_servers = language_registry.register_fake_lsp(
13169        "Rust",
13170        FakeLspAdapter {
13171            capabilities: lsp::ServerCapabilities {
13172                document_on_type_formatting_provider: Some(lsp::DocumentOnTypeFormattingOptions {
13173                    first_trigger_character: "{".to_string(),
13174                    more_trigger_character: None,
13175                }),
13176                ..Default::default()
13177            },
13178            ..Default::default()
13179        },
13180    );
13181
13182    let workspace = cx.add_window(|window, cx| Workspace::test_new(project.clone(), window, cx));
13183
13184    let cx = &mut VisualTestContext::from_window(*workspace, cx);
13185
13186    let worktree_id = workspace
13187        .update(cx, |workspace, _, cx| {
13188            workspace.project().update(cx, |project, cx| {
13189                project.worktrees(cx).next().unwrap().read(cx).id()
13190            })
13191        })
13192        .unwrap();
13193
13194    let buffer = project
13195        .update(cx, |project, cx| {
13196            project.open_local_buffer(path!("/a/main.rs"), cx)
13197        })
13198        .await
13199        .unwrap();
13200    let editor_handle = workspace
13201        .update(cx, |workspace, window, cx| {
13202            workspace.open_path((worktree_id, "main.rs"), None, true, window, cx)
13203        })
13204        .unwrap()
13205        .await
13206        .unwrap()
13207        .downcast::<Editor>()
13208        .unwrap();
13209
13210    cx.executor().start_waiting();
13211    let fake_server = fake_servers.next().await.unwrap();
13212
13213    fake_server.set_request_handler::<lsp::request::OnTypeFormatting, _, _>(
13214        |params, _| async move {
13215            assert_eq!(
13216                params.text_document_position.text_document.uri,
13217                lsp::Url::from_file_path(path!("/a/main.rs")).unwrap(),
13218            );
13219            assert_eq!(
13220                params.text_document_position.position,
13221                lsp::Position::new(0, 21),
13222            );
13223
13224            Ok(Some(vec![lsp::TextEdit {
13225                new_text: "]".to_string(),
13226                range: lsp::Range::new(lsp::Position::new(0, 22), lsp::Position::new(0, 22)),
13227            }]))
13228        },
13229    );
13230
13231    editor_handle.update_in(cx, |editor, window, cx| {
13232        window.focus(&editor.focus_handle(cx));
13233        editor.change_selections(None, window, cx, |s| {
13234            s.select_ranges([Point::new(0, 21)..Point::new(0, 20)])
13235        });
13236        editor.handle_input("{", window, cx);
13237    });
13238
13239    cx.executor().run_until_parked();
13240
13241    buffer.update(cx, |buffer, _| {
13242        assert_eq!(
13243            buffer.text(),
13244            "fn main() { let a = {5}; }",
13245            "No extra braces from on type formatting should appear in the buffer"
13246        )
13247    });
13248}
13249
13250#[gpui::test]
13251async fn test_language_server_restart_due_to_settings_change(cx: &mut TestAppContext) {
13252    init_test(cx, |_| {});
13253
13254    let fs = FakeFs::new(cx.executor());
13255    fs.insert_tree(
13256        path!("/a"),
13257        json!({
13258            "main.rs": "fn main() { let a = 5; }",
13259            "other.rs": "// Test file",
13260        }),
13261    )
13262    .await;
13263
13264    let project = Project::test(fs, [path!("/a").as_ref()], cx).await;
13265
13266    let server_restarts = Arc::new(AtomicUsize::new(0));
13267    let closure_restarts = Arc::clone(&server_restarts);
13268    let language_server_name = "test language server";
13269    let language_name: LanguageName = "Rust".into();
13270
13271    let language_registry = project.read_with(cx, |project, _| project.languages().clone());
13272    language_registry.add(Arc::new(Language::new(
13273        LanguageConfig {
13274            name: language_name.clone(),
13275            matcher: LanguageMatcher {
13276                path_suffixes: vec!["rs".to_string()],
13277                ..Default::default()
13278            },
13279            ..Default::default()
13280        },
13281        Some(tree_sitter_rust::LANGUAGE.into()),
13282    )));
13283    let mut fake_servers = language_registry.register_fake_lsp(
13284        "Rust",
13285        FakeLspAdapter {
13286            name: language_server_name,
13287            initialization_options: Some(json!({
13288                "testOptionValue": true
13289            })),
13290            initializer: Some(Box::new(move |fake_server| {
13291                let task_restarts = Arc::clone(&closure_restarts);
13292                fake_server.set_request_handler::<lsp::request::Shutdown, _, _>(move |_, _| {
13293                    task_restarts.fetch_add(1, atomic::Ordering::Release);
13294                    futures::future::ready(Ok(()))
13295                });
13296            })),
13297            ..Default::default()
13298        },
13299    );
13300
13301    let _window = cx.add_window(|window, cx| Workspace::test_new(project.clone(), window, cx));
13302    let _buffer = project
13303        .update(cx, |project, cx| {
13304            project.open_local_buffer_with_lsp(path!("/a/main.rs"), cx)
13305        })
13306        .await
13307        .unwrap();
13308    let _fake_server = fake_servers.next().await.unwrap();
13309    update_test_language_settings(cx, |language_settings| {
13310        language_settings.languages.insert(
13311            language_name.clone(),
13312            LanguageSettingsContent {
13313                tab_size: NonZeroU32::new(8),
13314                ..Default::default()
13315            },
13316        );
13317    });
13318    cx.executor().run_until_parked();
13319    assert_eq!(
13320        server_restarts.load(atomic::Ordering::Acquire),
13321        0,
13322        "Should not restart LSP server on an unrelated change"
13323    );
13324
13325    update_test_project_settings(cx, |project_settings| {
13326        project_settings.lsp.insert(
13327            "Some other server name".into(),
13328            LspSettings {
13329                binary: None,
13330                settings: None,
13331                initialization_options: Some(json!({
13332                    "some other init value": false
13333                })),
13334                enable_lsp_tasks: false,
13335            },
13336        );
13337    });
13338    cx.executor().run_until_parked();
13339    assert_eq!(
13340        server_restarts.load(atomic::Ordering::Acquire),
13341        0,
13342        "Should not restart LSP server on an unrelated LSP settings change"
13343    );
13344
13345    update_test_project_settings(cx, |project_settings| {
13346        project_settings.lsp.insert(
13347            language_server_name.into(),
13348            LspSettings {
13349                binary: None,
13350                settings: None,
13351                initialization_options: Some(json!({
13352                    "anotherInitValue": false
13353                })),
13354                enable_lsp_tasks: false,
13355            },
13356        );
13357    });
13358    cx.executor().run_until_parked();
13359    assert_eq!(
13360        server_restarts.load(atomic::Ordering::Acquire),
13361        1,
13362        "Should restart LSP server on a related LSP settings change"
13363    );
13364
13365    update_test_project_settings(cx, |project_settings| {
13366        project_settings.lsp.insert(
13367            language_server_name.into(),
13368            LspSettings {
13369                binary: None,
13370                settings: None,
13371                initialization_options: Some(json!({
13372                    "anotherInitValue": false
13373                })),
13374                enable_lsp_tasks: false,
13375            },
13376        );
13377    });
13378    cx.executor().run_until_parked();
13379    assert_eq!(
13380        server_restarts.load(atomic::Ordering::Acquire),
13381        1,
13382        "Should not restart LSP server on a related LSP settings change that is the same"
13383    );
13384
13385    update_test_project_settings(cx, |project_settings| {
13386        project_settings.lsp.insert(
13387            language_server_name.into(),
13388            LspSettings {
13389                binary: None,
13390                settings: None,
13391                initialization_options: None,
13392                enable_lsp_tasks: false,
13393            },
13394        );
13395    });
13396    cx.executor().run_until_parked();
13397    assert_eq!(
13398        server_restarts.load(atomic::Ordering::Acquire),
13399        2,
13400        "Should restart LSP server on another related LSP settings change"
13401    );
13402}
13403
13404#[gpui::test]
13405async fn test_completions_with_additional_edits(cx: &mut TestAppContext) {
13406    init_test(cx, |_| {});
13407
13408    let mut cx = EditorLspTestContext::new_rust(
13409        lsp::ServerCapabilities {
13410            completion_provider: Some(lsp::CompletionOptions {
13411                trigger_characters: Some(vec![".".to_string()]),
13412                resolve_provider: Some(true),
13413                ..Default::default()
13414            }),
13415            ..Default::default()
13416        },
13417        cx,
13418    )
13419    .await;
13420
13421    cx.set_state("fn main() { let a = 2ˇ; }");
13422    cx.simulate_keystroke(".");
13423    let completion_item = lsp::CompletionItem {
13424        label: "some".into(),
13425        kind: Some(lsp::CompletionItemKind::SNIPPET),
13426        detail: Some("Wrap the expression in an `Option::Some`".to_string()),
13427        documentation: Some(lsp::Documentation::MarkupContent(lsp::MarkupContent {
13428            kind: lsp::MarkupKind::Markdown,
13429            value: "```rust\nSome(2)\n```".to_string(),
13430        })),
13431        deprecated: Some(false),
13432        sort_text: Some("fffffff2".to_string()),
13433        filter_text: Some("some".to_string()),
13434        insert_text_format: Some(lsp::InsertTextFormat::SNIPPET),
13435        text_edit: Some(lsp::CompletionTextEdit::Edit(lsp::TextEdit {
13436            range: lsp::Range {
13437                start: lsp::Position {
13438                    line: 0,
13439                    character: 22,
13440                },
13441                end: lsp::Position {
13442                    line: 0,
13443                    character: 22,
13444                },
13445            },
13446            new_text: "Some(2)".to_string(),
13447        })),
13448        additional_text_edits: Some(vec![lsp::TextEdit {
13449            range: lsp::Range {
13450                start: lsp::Position {
13451                    line: 0,
13452                    character: 20,
13453                },
13454                end: lsp::Position {
13455                    line: 0,
13456                    character: 22,
13457                },
13458            },
13459            new_text: "".to_string(),
13460        }]),
13461        ..Default::default()
13462    };
13463
13464    let closure_completion_item = completion_item.clone();
13465    let mut request = cx.set_request_handler::<lsp::request::Completion, _, _>(move |_, _, _| {
13466        let task_completion_item = closure_completion_item.clone();
13467        async move {
13468            Ok(Some(lsp::CompletionResponse::Array(vec![
13469                task_completion_item,
13470            ])))
13471        }
13472    });
13473
13474    request.next().await;
13475
13476    cx.condition(|editor, _| editor.context_menu_visible())
13477        .await;
13478    let apply_additional_edits = cx.update_editor(|editor, window, cx| {
13479        editor
13480            .confirm_completion(&ConfirmCompletion::default(), window, cx)
13481            .unwrap()
13482    });
13483    cx.assert_editor_state("fn main() { let a = 2.Some(2)ˇ; }");
13484
13485    cx.set_request_handler::<lsp::request::ResolveCompletionItem, _, _>(move |_, _, _| {
13486        let task_completion_item = completion_item.clone();
13487        async move { Ok(task_completion_item) }
13488    })
13489    .next()
13490    .await
13491    .unwrap();
13492    apply_additional_edits.await.unwrap();
13493    cx.assert_editor_state("fn main() { let a = Some(2)ˇ; }");
13494}
13495
13496#[gpui::test]
13497async fn test_completions_resolve_updates_labels_if_filter_text_matches(cx: &mut TestAppContext) {
13498    init_test(cx, |_| {});
13499
13500    let mut cx = EditorLspTestContext::new_rust(
13501        lsp::ServerCapabilities {
13502            completion_provider: Some(lsp::CompletionOptions {
13503                trigger_characters: Some(vec![".".to_string()]),
13504                resolve_provider: Some(true),
13505                ..Default::default()
13506            }),
13507            ..Default::default()
13508        },
13509        cx,
13510    )
13511    .await;
13512
13513    cx.set_state("fn main() { let a = 2ˇ; }");
13514    cx.simulate_keystroke(".");
13515
13516    let item1 = lsp::CompletionItem {
13517        label: "method id()".to_string(),
13518        filter_text: Some("id".to_string()),
13519        detail: None,
13520        documentation: None,
13521        text_edit: Some(lsp::CompletionTextEdit::Edit(lsp::TextEdit {
13522            range: lsp::Range::new(lsp::Position::new(0, 22), lsp::Position::new(0, 22)),
13523            new_text: ".id".to_string(),
13524        })),
13525        ..lsp::CompletionItem::default()
13526    };
13527
13528    let item2 = lsp::CompletionItem {
13529        label: "other".to_string(),
13530        filter_text: Some("other".to_string()),
13531        detail: None,
13532        documentation: None,
13533        text_edit: Some(lsp::CompletionTextEdit::Edit(lsp::TextEdit {
13534            range: lsp::Range::new(lsp::Position::new(0, 22), lsp::Position::new(0, 22)),
13535            new_text: ".other".to_string(),
13536        })),
13537        ..lsp::CompletionItem::default()
13538    };
13539
13540    let item1 = item1.clone();
13541    cx.set_request_handler::<lsp::request::Completion, _, _>({
13542        let item1 = item1.clone();
13543        move |_, _, _| {
13544            let item1 = item1.clone();
13545            let item2 = item2.clone();
13546            async move { Ok(Some(lsp::CompletionResponse::Array(vec![item1, item2]))) }
13547        }
13548    })
13549    .next()
13550    .await;
13551
13552    cx.condition(|editor, _| editor.context_menu_visible())
13553        .await;
13554    cx.update_editor(|editor, _, _| {
13555        let context_menu = editor.context_menu.borrow_mut();
13556        let context_menu = context_menu
13557            .as_ref()
13558            .expect("Should have the context menu deployed");
13559        match context_menu {
13560            CodeContextMenu::Completions(completions_menu) => {
13561                let completions = completions_menu.completions.borrow_mut();
13562                assert_eq!(
13563                    completions
13564                        .iter()
13565                        .map(|completion| &completion.label.text)
13566                        .collect::<Vec<_>>(),
13567                    vec!["method id()", "other"]
13568                )
13569            }
13570            CodeContextMenu::CodeActions(_) => panic!("Should show the completions menu"),
13571        }
13572    });
13573
13574    cx.set_request_handler::<lsp::request::ResolveCompletionItem, _, _>({
13575        let item1 = item1.clone();
13576        move |_, item_to_resolve, _| {
13577            let item1 = item1.clone();
13578            async move {
13579                if item1 == item_to_resolve {
13580                    Ok(lsp::CompletionItem {
13581                        label: "method id()".to_string(),
13582                        filter_text: Some("id".to_string()),
13583                        detail: Some("Now resolved!".to_string()),
13584                        documentation: Some(lsp::Documentation::String("Docs".to_string())),
13585                        text_edit: Some(lsp::CompletionTextEdit::Edit(lsp::TextEdit {
13586                            range: lsp::Range::new(
13587                                lsp::Position::new(0, 22),
13588                                lsp::Position::new(0, 22),
13589                            ),
13590                            new_text: ".id".to_string(),
13591                        })),
13592                        ..lsp::CompletionItem::default()
13593                    })
13594                } else {
13595                    Ok(item_to_resolve)
13596                }
13597            }
13598        }
13599    })
13600    .next()
13601    .await
13602    .unwrap();
13603    cx.run_until_parked();
13604
13605    cx.update_editor(|editor, window, cx| {
13606        editor.context_menu_next(&Default::default(), window, cx);
13607    });
13608
13609    cx.update_editor(|editor, _, _| {
13610        let context_menu = editor.context_menu.borrow_mut();
13611        let context_menu = context_menu
13612            .as_ref()
13613            .expect("Should have the context menu deployed");
13614        match context_menu {
13615            CodeContextMenu::Completions(completions_menu) => {
13616                let completions = completions_menu.completions.borrow_mut();
13617                assert_eq!(
13618                    completions
13619                        .iter()
13620                        .map(|completion| &completion.label.text)
13621                        .collect::<Vec<_>>(),
13622                    vec!["method id() Now resolved!", "other"],
13623                    "Should update first completion label, but not second as the filter text did not match."
13624                );
13625            }
13626            CodeContextMenu::CodeActions(_) => panic!("Should show the completions menu"),
13627        }
13628    });
13629}
13630
13631#[gpui::test]
13632async fn test_completions_resolve_happens_once(cx: &mut TestAppContext) {
13633    init_test(cx, |_| {});
13634
13635    let mut cx = EditorLspTestContext::new_rust(
13636        lsp::ServerCapabilities {
13637            completion_provider: Some(lsp::CompletionOptions {
13638                trigger_characters: Some(vec![".".to_string()]),
13639                resolve_provider: Some(true),
13640                ..Default::default()
13641            }),
13642            ..Default::default()
13643        },
13644        cx,
13645    )
13646    .await;
13647
13648    cx.set_state("fn main() { let a = 2ˇ; }");
13649    cx.simulate_keystroke(".");
13650
13651    let unresolved_item_1 = lsp::CompletionItem {
13652        label: "id".to_string(),
13653        filter_text: Some("id".to_string()),
13654        detail: None,
13655        documentation: None,
13656        text_edit: Some(lsp::CompletionTextEdit::Edit(lsp::TextEdit {
13657            range: lsp::Range::new(lsp::Position::new(0, 22), lsp::Position::new(0, 22)),
13658            new_text: ".id".to_string(),
13659        })),
13660        ..lsp::CompletionItem::default()
13661    };
13662    let resolved_item_1 = lsp::CompletionItem {
13663        additional_text_edits: Some(vec![lsp::TextEdit {
13664            range: lsp::Range::new(lsp::Position::new(0, 20), lsp::Position::new(0, 22)),
13665            new_text: "!!".to_string(),
13666        }]),
13667        ..unresolved_item_1.clone()
13668    };
13669    let unresolved_item_2 = lsp::CompletionItem {
13670        label: "other".to_string(),
13671        filter_text: Some("other".to_string()),
13672        detail: None,
13673        documentation: None,
13674        text_edit: Some(lsp::CompletionTextEdit::Edit(lsp::TextEdit {
13675            range: lsp::Range::new(lsp::Position::new(0, 22), lsp::Position::new(0, 22)),
13676            new_text: ".other".to_string(),
13677        })),
13678        ..lsp::CompletionItem::default()
13679    };
13680    let resolved_item_2 = lsp::CompletionItem {
13681        additional_text_edits: Some(vec![lsp::TextEdit {
13682            range: lsp::Range::new(lsp::Position::new(0, 20), lsp::Position::new(0, 22)),
13683            new_text: "??".to_string(),
13684        }]),
13685        ..unresolved_item_2.clone()
13686    };
13687
13688    let resolve_requests_1 = Arc::new(AtomicUsize::new(0));
13689    let resolve_requests_2 = Arc::new(AtomicUsize::new(0));
13690    cx.lsp
13691        .server
13692        .on_request::<lsp::request::ResolveCompletionItem, _, _>({
13693            let unresolved_item_1 = unresolved_item_1.clone();
13694            let resolved_item_1 = resolved_item_1.clone();
13695            let unresolved_item_2 = unresolved_item_2.clone();
13696            let resolved_item_2 = resolved_item_2.clone();
13697            let resolve_requests_1 = resolve_requests_1.clone();
13698            let resolve_requests_2 = resolve_requests_2.clone();
13699            move |unresolved_request, _| {
13700                let unresolved_item_1 = unresolved_item_1.clone();
13701                let resolved_item_1 = resolved_item_1.clone();
13702                let unresolved_item_2 = unresolved_item_2.clone();
13703                let resolved_item_2 = resolved_item_2.clone();
13704                let resolve_requests_1 = resolve_requests_1.clone();
13705                let resolve_requests_2 = resolve_requests_2.clone();
13706                async move {
13707                    if unresolved_request == unresolved_item_1 {
13708                        resolve_requests_1.fetch_add(1, atomic::Ordering::Release);
13709                        Ok(resolved_item_1.clone())
13710                    } else if unresolved_request == unresolved_item_2 {
13711                        resolve_requests_2.fetch_add(1, atomic::Ordering::Release);
13712                        Ok(resolved_item_2.clone())
13713                    } else {
13714                        panic!("Unexpected completion item {unresolved_request:?}")
13715                    }
13716                }
13717            }
13718        })
13719        .detach();
13720
13721    cx.set_request_handler::<lsp::request::Completion, _, _>(move |_, _, _| {
13722        let unresolved_item_1 = unresolved_item_1.clone();
13723        let unresolved_item_2 = unresolved_item_2.clone();
13724        async move {
13725            Ok(Some(lsp::CompletionResponse::Array(vec![
13726                unresolved_item_1,
13727                unresolved_item_2,
13728            ])))
13729        }
13730    })
13731    .next()
13732    .await;
13733
13734    cx.condition(|editor, _| editor.context_menu_visible())
13735        .await;
13736    cx.update_editor(|editor, _, _| {
13737        let context_menu = editor.context_menu.borrow_mut();
13738        let context_menu = context_menu
13739            .as_ref()
13740            .expect("Should have the context menu deployed");
13741        match context_menu {
13742            CodeContextMenu::Completions(completions_menu) => {
13743                let completions = completions_menu.completions.borrow_mut();
13744                assert_eq!(
13745                    completions
13746                        .iter()
13747                        .map(|completion| &completion.label.text)
13748                        .collect::<Vec<_>>(),
13749                    vec!["id", "other"]
13750                )
13751            }
13752            CodeContextMenu::CodeActions(_) => panic!("Should show the completions menu"),
13753        }
13754    });
13755    cx.run_until_parked();
13756
13757    cx.update_editor(|editor, window, cx| {
13758        editor.context_menu_next(&ContextMenuNext, window, cx);
13759    });
13760    cx.run_until_parked();
13761    cx.update_editor(|editor, window, cx| {
13762        editor.context_menu_prev(&ContextMenuPrevious, window, cx);
13763    });
13764    cx.run_until_parked();
13765    cx.update_editor(|editor, window, cx| {
13766        editor.context_menu_next(&ContextMenuNext, window, cx);
13767    });
13768    cx.run_until_parked();
13769    cx.update_editor(|editor, window, cx| {
13770        editor
13771            .compose_completion(&ComposeCompletion::default(), window, cx)
13772            .expect("No task returned")
13773    })
13774    .await
13775    .expect("Completion failed");
13776    cx.run_until_parked();
13777
13778    cx.update_editor(|editor, _, cx| {
13779        assert_eq!(
13780            resolve_requests_1.load(atomic::Ordering::Acquire),
13781            1,
13782            "Should always resolve once despite multiple selections"
13783        );
13784        assert_eq!(
13785            resolve_requests_2.load(atomic::Ordering::Acquire),
13786            1,
13787            "Should always resolve once after multiple selections and applying the completion"
13788        );
13789        assert_eq!(
13790            editor.text(cx),
13791            "fn main() { let a = ??.other; }",
13792            "Should use resolved data when applying the completion"
13793        );
13794    });
13795}
13796
13797#[gpui::test]
13798async fn test_completions_default_resolve_data_handling(cx: &mut TestAppContext) {
13799    init_test(cx, |_| {});
13800
13801    let item_0 = lsp::CompletionItem {
13802        label: "abs".into(),
13803        insert_text: Some("abs".into()),
13804        data: Some(json!({ "very": "special"})),
13805        insert_text_mode: Some(lsp::InsertTextMode::ADJUST_INDENTATION),
13806        text_edit: Some(lsp::CompletionTextEdit::InsertAndReplace(
13807            lsp::InsertReplaceEdit {
13808                new_text: "abs".to_string(),
13809                insert: lsp::Range::default(),
13810                replace: lsp::Range::default(),
13811            },
13812        )),
13813        ..lsp::CompletionItem::default()
13814    };
13815    let items = iter::once(item_0.clone())
13816        .chain((11..51).map(|i| lsp::CompletionItem {
13817            label: format!("item_{}", i),
13818            insert_text: Some(format!("item_{}", i)),
13819            insert_text_format: Some(lsp::InsertTextFormat::PLAIN_TEXT),
13820            ..lsp::CompletionItem::default()
13821        }))
13822        .collect::<Vec<_>>();
13823
13824    let default_commit_characters = vec!["?".to_string()];
13825    let default_data = json!({ "default": "data"});
13826    let default_insert_text_format = lsp::InsertTextFormat::SNIPPET;
13827    let default_insert_text_mode = lsp::InsertTextMode::AS_IS;
13828    let default_edit_range = lsp::Range {
13829        start: lsp::Position {
13830            line: 0,
13831            character: 5,
13832        },
13833        end: lsp::Position {
13834            line: 0,
13835            character: 5,
13836        },
13837    };
13838
13839    let mut cx = EditorLspTestContext::new_rust(
13840        lsp::ServerCapabilities {
13841            completion_provider: Some(lsp::CompletionOptions {
13842                trigger_characters: Some(vec![".".to_string()]),
13843                resolve_provider: Some(true),
13844                ..Default::default()
13845            }),
13846            ..Default::default()
13847        },
13848        cx,
13849    )
13850    .await;
13851
13852    cx.set_state("fn main() { let a = 2ˇ; }");
13853    cx.simulate_keystroke(".");
13854
13855    let completion_data = default_data.clone();
13856    let completion_characters = default_commit_characters.clone();
13857    let completion_items = items.clone();
13858    cx.set_request_handler::<lsp::request::Completion, _, _>(move |_, _, _| {
13859        let default_data = completion_data.clone();
13860        let default_commit_characters = completion_characters.clone();
13861        let items = completion_items.clone();
13862        async move {
13863            Ok(Some(lsp::CompletionResponse::List(lsp::CompletionList {
13864                items,
13865                item_defaults: Some(lsp::CompletionListItemDefaults {
13866                    data: Some(default_data.clone()),
13867                    commit_characters: Some(default_commit_characters.clone()),
13868                    edit_range: Some(lsp::CompletionListItemDefaultsEditRange::Range(
13869                        default_edit_range,
13870                    )),
13871                    insert_text_format: Some(default_insert_text_format),
13872                    insert_text_mode: Some(default_insert_text_mode),
13873                }),
13874                ..lsp::CompletionList::default()
13875            })))
13876        }
13877    })
13878    .next()
13879    .await;
13880
13881    let resolved_items = Arc::new(Mutex::new(Vec::new()));
13882    cx.lsp
13883        .server
13884        .on_request::<lsp::request::ResolveCompletionItem, _, _>({
13885            let closure_resolved_items = resolved_items.clone();
13886            move |item_to_resolve, _| {
13887                let closure_resolved_items = closure_resolved_items.clone();
13888                async move {
13889                    closure_resolved_items.lock().push(item_to_resolve.clone());
13890                    Ok(item_to_resolve)
13891                }
13892            }
13893        })
13894        .detach();
13895
13896    cx.condition(|editor, _| editor.context_menu_visible())
13897        .await;
13898    cx.run_until_parked();
13899    cx.update_editor(|editor, _, _| {
13900        let menu = editor.context_menu.borrow_mut();
13901        match menu.as_ref().expect("should have the completions menu") {
13902            CodeContextMenu::Completions(completions_menu) => {
13903                assert_eq!(
13904                    completions_menu
13905                        .entries
13906                        .borrow()
13907                        .iter()
13908                        .map(|mat| mat.string.clone())
13909                        .collect::<Vec<String>>(),
13910                    items
13911                        .iter()
13912                        .map(|completion| completion.label.clone())
13913                        .collect::<Vec<String>>()
13914                );
13915            }
13916            CodeContextMenu::CodeActions(_) => panic!("Expected to have the completions menu"),
13917        }
13918    });
13919    // Approximate initial displayed interval is 0..12. With extra item padding of 4 this is 0..16
13920    // with 4 from the end.
13921    assert_eq!(
13922        *resolved_items.lock(),
13923        [&items[0..16], &items[items.len() - 4..items.len()]]
13924            .concat()
13925            .iter()
13926            .cloned()
13927            .map(|mut item| {
13928                if item.data.is_none() {
13929                    item.data = Some(default_data.clone());
13930                }
13931                item
13932            })
13933            .collect::<Vec<lsp::CompletionItem>>(),
13934        "Items sent for resolve should be unchanged modulo resolve `data` filled with default if missing"
13935    );
13936    resolved_items.lock().clear();
13937
13938    cx.update_editor(|editor, window, cx| {
13939        editor.context_menu_prev(&ContextMenuPrevious, window, cx);
13940    });
13941    cx.run_until_parked();
13942    // Completions that have already been resolved are skipped.
13943    assert_eq!(
13944        *resolved_items.lock(),
13945        items[items.len() - 16..items.len() - 4]
13946            .iter()
13947            .cloned()
13948            .map(|mut item| {
13949                if item.data.is_none() {
13950                    item.data = Some(default_data.clone());
13951                }
13952                item
13953            })
13954            .collect::<Vec<lsp::CompletionItem>>()
13955    );
13956    resolved_items.lock().clear();
13957}
13958
13959#[gpui::test]
13960async fn test_completions_in_languages_with_extra_word_characters(cx: &mut TestAppContext) {
13961    init_test(cx, |_| {});
13962
13963    let mut cx = EditorLspTestContext::new(
13964        Language::new(
13965            LanguageConfig {
13966                matcher: LanguageMatcher {
13967                    path_suffixes: vec!["jsx".into()],
13968                    ..Default::default()
13969                },
13970                overrides: [(
13971                    "element".into(),
13972                    LanguageConfigOverride {
13973                        completion_query_characters: Override::Set(['-'].into_iter().collect()),
13974                        ..Default::default()
13975                    },
13976                )]
13977                .into_iter()
13978                .collect(),
13979                ..Default::default()
13980            },
13981            Some(tree_sitter_typescript::LANGUAGE_TSX.into()),
13982        )
13983        .with_override_query("(jsx_self_closing_element) @element")
13984        .unwrap(),
13985        lsp::ServerCapabilities {
13986            completion_provider: Some(lsp::CompletionOptions {
13987                trigger_characters: Some(vec![":".to_string()]),
13988                ..Default::default()
13989            }),
13990            ..Default::default()
13991        },
13992        cx,
13993    )
13994    .await;
13995
13996    cx.lsp
13997        .set_request_handler::<lsp::request::Completion, _, _>(move |_, _| async move {
13998            Ok(Some(lsp::CompletionResponse::Array(vec![
13999                lsp::CompletionItem {
14000                    label: "bg-blue".into(),
14001                    ..Default::default()
14002                },
14003                lsp::CompletionItem {
14004                    label: "bg-red".into(),
14005                    ..Default::default()
14006                },
14007                lsp::CompletionItem {
14008                    label: "bg-yellow".into(),
14009                    ..Default::default()
14010                },
14011            ])))
14012        });
14013
14014    cx.set_state(r#"<p class="bgˇ" />"#);
14015
14016    // Trigger completion when typing a dash, because the dash is an extra
14017    // word character in the 'element' scope, which contains the cursor.
14018    cx.simulate_keystroke("-");
14019    cx.executor().run_until_parked();
14020    cx.update_editor(|editor, _, _| {
14021        if let Some(CodeContextMenu::Completions(menu)) = editor.context_menu.borrow_mut().as_ref()
14022        {
14023            assert_eq!(
14024                completion_menu_entries(&menu),
14025                &["bg-blue", "bg-red", "bg-yellow"]
14026            );
14027        } else {
14028            panic!("expected completion menu to be open");
14029        }
14030    });
14031
14032    cx.simulate_keystroke("l");
14033    cx.executor().run_until_parked();
14034    cx.update_editor(|editor, _, _| {
14035        if let Some(CodeContextMenu::Completions(menu)) = editor.context_menu.borrow_mut().as_ref()
14036        {
14037            assert_eq!(completion_menu_entries(&menu), &["bg-blue", "bg-yellow"]);
14038        } else {
14039            panic!("expected completion menu to be open");
14040        }
14041    });
14042
14043    // When filtering completions, consider the character after the '-' to
14044    // be the start of a subword.
14045    cx.set_state(r#"<p class="yelˇ" />"#);
14046    cx.simulate_keystroke("l");
14047    cx.executor().run_until_parked();
14048    cx.update_editor(|editor, _, _| {
14049        if let Some(CodeContextMenu::Completions(menu)) = editor.context_menu.borrow_mut().as_ref()
14050        {
14051            assert_eq!(completion_menu_entries(&menu), &["bg-yellow"]);
14052        } else {
14053            panic!("expected completion menu to be open");
14054        }
14055    });
14056}
14057
14058fn completion_menu_entries(menu: &CompletionsMenu) -> Vec<String> {
14059    let entries = menu.entries.borrow();
14060    entries.iter().map(|mat| mat.string.clone()).collect()
14061}
14062
14063#[gpui::test]
14064async fn test_document_format_with_prettier(cx: &mut TestAppContext) {
14065    init_test(cx, |settings| {
14066        settings.defaults.formatter = Some(language_settings::SelectedFormatter::List(
14067            FormatterList(vec![Formatter::Prettier].into()),
14068        ))
14069    });
14070
14071    let fs = FakeFs::new(cx.executor());
14072    fs.insert_file(path!("/file.ts"), Default::default()).await;
14073
14074    let project = Project::test(fs, [path!("/file.ts").as_ref()], cx).await;
14075    let language_registry = project.read_with(cx, |project, _| project.languages().clone());
14076
14077    language_registry.add(Arc::new(Language::new(
14078        LanguageConfig {
14079            name: "TypeScript".into(),
14080            matcher: LanguageMatcher {
14081                path_suffixes: vec!["ts".to_string()],
14082                ..Default::default()
14083            },
14084            ..Default::default()
14085        },
14086        Some(tree_sitter_typescript::LANGUAGE_TYPESCRIPT.into()),
14087    )));
14088    update_test_language_settings(cx, |settings| {
14089        settings.defaults.prettier = Some(PrettierSettings {
14090            allowed: true,
14091            ..PrettierSettings::default()
14092        });
14093    });
14094
14095    let test_plugin = "test_plugin";
14096    let _ = language_registry.register_fake_lsp(
14097        "TypeScript",
14098        FakeLspAdapter {
14099            prettier_plugins: vec![test_plugin],
14100            ..Default::default()
14101        },
14102    );
14103
14104    let prettier_format_suffix = project::TEST_PRETTIER_FORMAT_SUFFIX;
14105    let buffer = project
14106        .update(cx, |project, cx| {
14107            project.open_local_buffer(path!("/file.ts"), cx)
14108        })
14109        .await
14110        .unwrap();
14111
14112    let buffer_text = "one\ntwo\nthree\n";
14113    let buffer = cx.new(|cx| MultiBuffer::singleton(buffer, cx));
14114    let (editor, cx) = cx.add_window_view(|window, cx| build_editor(buffer, window, cx));
14115    editor.update_in(cx, |editor, window, cx| {
14116        editor.set_text(buffer_text, window, cx)
14117    });
14118
14119    editor
14120        .update_in(cx, |editor, window, cx| {
14121            editor.perform_format(
14122                project.clone(),
14123                FormatTrigger::Manual,
14124                FormatTarget::Buffers,
14125                window,
14126                cx,
14127            )
14128        })
14129        .unwrap()
14130        .await;
14131    assert_eq!(
14132        editor.update(cx, |editor, cx| editor.text(cx)),
14133        buffer_text.to_string() + prettier_format_suffix,
14134        "Test prettier formatting was not applied to the original buffer text",
14135    );
14136
14137    update_test_language_settings(cx, |settings| {
14138        settings.defaults.formatter = Some(language_settings::SelectedFormatter::Auto)
14139    });
14140    let format = editor.update_in(cx, |editor, window, cx| {
14141        editor.perform_format(
14142            project.clone(),
14143            FormatTrigger::Manual,
14144            FormatTarget::Buffers,
14145            window,
14146            cx,
14147        )
14148    });
14149    format.await.unwrap();
14150    assert_eq!(
14151        editor.update(cx, |editor, cx| editor.text(cx)),
14152        buffer_text.to_string() + prettier_format_suffix + "\n" + prettier_format_suffix,
14153        "Autoformatting (via test prettier) was not applied to the original buffer text",
14154    );
14155}
14156
14157#[gpui::test]
14158async fn test_addition_reverts(cx: &mut TestAppContext) {
14159    init_test(cx, |_| {});
14160    let mut cx = EditorLspTestContext::new_rust(lsp::ServerCapabilities::default(), cx).await;
14161    let base_text = indoc! {r#"
14162        struct Row;
14163        struct Row1;
14164        struct Row2;
14165
14166        struct Row4;
14167        struct Row5;
14168        struct Row6;
14169
14170        struct Row8;
14171        struct Row9;
14172        struct Row10;"#};
14173
14174    // When addition hunks are not adjacent to carets, no hunk revert is performed
14175    assert_hunk_revert(
14176        indoc! {r#"struct Row;
14177                   struct Row1;
14178                   struct Row1.1;
14179                   struct Row1.2;
14180                   struct Row2;ˇ
14181
14182                   struct Row4;
14183                   struct Row5;
14184                   struct Row6;
14185
14186                   struct Row8;
14187                   ˇstruct Row9;
14188                   struct Row9.1;
14189                   struct Row9.2;
14190                   struct Row9.3;
14191                   struct Row10;"#},
14192        vec![DiffHunkStatusKind::Added, DiffHunkStatusKind::Added],
14193        indoc! {r#"struct Row;
14194                   struct Row1;
14195                   struct Row1.1;
14196                   struct Row1.2;
14197                   struct Row2;ˇ
14198
14199                   struct Row4;
14200                   struct Row5;
14201                   struct Row6;
14202
14203                   struct Row8;
14204                   ˇstruct Row9;
14205                   struct Row9.1;
14206                   struct Row9.2;
14207                   struct Row9.3;
14208                   struct Row10;"#},
14209        base_text,
14210        &mut cx,
14211    );
14212    // Same for selections
14213    assert_hunk_revert(
14214        indoc! {r#"struct Row;
14215                   struct Row1;
14216                   struct Row2;
14217                   struct Row2.1;
14218                   struct Row2.2;
14219                   «ˇ
14220                   struct Row4;
14221                   struct» Row5;
14222                   «struct Row6;
14223                   ˇ»
14224                   struct Row9.1;
14225                   struct Row9.2;
14226                   struct Row9.3;
14227                   struct Row8;
14228                   struct Row9;
14229                   struct Row10;"#},
14230        vec![DiffHunkStatusKind::Added, DiffHunkStatusKind::Added],
14231        indoc! {r#"struct Row;
14232                   struct Row1;
14233                   struct Row2;
14234                   struct Row2.1;
14235                   struct Row2.2;
14236                   «ˇ
14237                   struct Row4;
14238                   struct» Row5;
14239                   «struct Row6;
14240                   ˇ»
14241                   struct Row9.1;
14242                   struct Row9.2;
14243                   struct Row9.3;
14244                   struct Row8;
14245                   struct Row9;
14246                   struct Row10;"#},
14247        base_text,
14248        &mut cx,
14249    );
14250
14251    // When carets and selections intersect the addition hunks, those are reverted.
14252    // Adjacent carets got merged.
14253    assert_hunk_revert(
14254        indoc! {r#"struct Row;
14255                   ˇ// something on the top
14256                   struct Row1;
14257                   struct Row2;
14258                   struct Roˇw3.1;
14259                   struct Row2.2;
14260                   struct Row2.3;ˇ
14261
14262                   struct Row4;
14263                   struct ˇRow5.1;
14264                   struct Row5.2;
14265                   struct «Rowˇ»5.3;
14266                   struct Row5;
14267                   struct Row6;
14268                   ˇ
14269                   struct Row9.1;
14270                   struct «Rowˇ»9.2;
14271                   struct «ˇRow»9.3;
14272                   struct Row8;
14273                   struct Row9;
14274                   «ˇ// something on bottom»
14275                   struct Row10;"#},
14276        vec![
14277            DiffHunkStatusKind::Added,
14278            DiffHunkStatusKind::Added,
14279            DiffHunkStatusKind::Added,
14280            DiffHunkStatusKind::Added,
14281            DiffHunkStatusKind::Added,
14282        ],
14283        indoc! {r#"struct Row;
14284                   ˇstruct Row1;
14285                   struct Row2;
14286                   ˇ
14287                   struct Row4;
14288                   ˇstruct Row5;
14289                   struct Row6;
14290                   ˇ
14291                   ˇstruct Row8;
14292                   struct Row9;
14293                   ˇstruct Row10;"#},
14294        base_text,
14295        &mut cx,
14296    );
14297}
14298
14299#[gpui::test]
14300async fn test_modification_reverts(cx: &mut TestAppContext) {
14301    init_test(cx, |_| {});
14302    let mut cx = EditorLspTestContext::new_rust(lsp::ServerCapabilities::default(), cx).await;
14303    let base_text = indoc! {r#"
14304        struct Row;
14305        struct Row1;
14306        struct Row2;
14307
14308        struct Row4;
14309        struct Row5;
14310        struct Row6;
14311
14312        struct Row8;
14313        struct Row9;
14314        struct Row10;"#};
14315
14316    // Modification hunks behave the same as the addition ones.
14317    assert_hunk_revert(
14318        indoc! {r#"struct Row;
14319                   struct Row1;
14320                   struct Row33;
14321                   ˇ
14322                   struct Row4;
14323                   struct Row5;
14324                   struct Row6;
14325                   ˇ
14326                   struct Row99;
14327                   struct Row9;
14328                   struct Row10;"#},
14329        vec![DiffHunkStatusKind::Modified, DiffHunkStatusKind::Modified],
14330        indoc! {r#"struct Row;
14331                   struct Row1;
14332                   struct Row33;
14333                   ˇ
14334                   struct Row4;
14335                   struct Row5;
14336                   struct Row6;
14337                   ˇ
14338                   struct Row99;
14339                   struct Row9;
14340                   struct Row10;"#},
14341        base_text,
14342        &mut cx,
14343    );
14344    assert_hunk_revert(
14345        indoc! {r#"struct Row;
14346                   struct Row1;
14347                   struct Row33;
14348                   «ˇ
14349                   struct Row4;
14350                   struct» Row5;
14351                   «struct Row6;
14352                   ˇ»
14353                   struct Row99;
14354                   struct Row9;
14355                   struct Row10;"#},
14356        vec![DiffHunkStatusKind::Modified, DiffHunkStatusKind::Modified],
14357        indoc! {r#"struct Row;
14358                   struct Row1;
14359                   struct Row33;
14360                   «ˇ
14361                   struct Row4;
14362                   struct» Row5;
14363                   «struct Row6;
14364                   ˇ»
14365                   struct Row99;
14366                   struct Row9;
14367                   struct Row10;"#},
14368        base_text,
14369        &mut cx,
14370    );
14371
14372    assert_hunk_revert(
14373        indoc! {r#"ˇstruct Row1.1;
14374                   struct Row1;
14375                   «ˇstr»uct Row22;
14376
14377                   struct ˇRow44;
14378                   struct Row5;
14379                   struct «Rˇ»ow66;ˇ
14380
14381                   «struˇ»ct Row88;
14382                   struct Row9;
14383                   struct Row1011;ˇ"#},
14384        vec![
14385            DiffHunkStatusKind::Modified,
14386            DiffHunkStatusKind::Modified,
14387            DiffHunkStatusKind::Modified,
14388            DiffHunkStatusKind::Modified,
14389            DiffHunkStatusKind::Modified,
14390            DiffHunkStatusKind::Modified,
14391        ],
14392        indoc! {r#"struct Row;
14393                   ˇstruct Row1;
14394                   struct Row2;
14395                   ˇ
14396                   struct Row4;
14397                   ˇstruct Row5;
14398                   struct Row6;
14399                   ˇ
14400                   struct Row8;
14401                   ˇstruct Row9;
14402                   struct Row10;ˇ"#},
14403        base_text,
14404        &mut cx,
14405    );
14406}
14407
14408#[gpui::test]
14409async fn test_deleting_over_diff_hunk(cx: &mut TestAppContext) {
14410    init_test(cx, |_| {});
14411    let mut cx = EditorLspTestContext::new_rust(lsp::ServerCapabilities::default(), cx).await;
14412    let base_text = indoc! {r#"
14413        one
14414
14415        two
14416        three
14417        "#};
14418
14419    cx.set_head_text(base_text);
14420    cx.set_state("\nˇ\n");
14421    cx.executor().run_until_parked();
14422    cx.update_editor(|editor, _window, cx| {
14423        editor.expand_selected_diff_hunks(cx);
14424    });
14425    cx.executor().run_until_parked();
14426    cx.update_editor(|editor, window, cx| {
14427        editor.backspace(&Default::default(), window, cx);
14428    });
14429    cx.run_until_parked();
14430    cx.assert_state_with_diff(
14431        indoc! {r#"
14432
14433        - two
14434        - threeˇ
14435        +
14436        "#}
14437        .to_string(),
14438    );
14439}
14440
14441#[gpui::test]
14442async fn test_deletion_reverts(cx: &mut TestAppContext) {
14443    init_test(cx, |_| {});
14444    let mut cx = EditorLspTestContext::new_rust(lsp::ServerCapabilities::default(), cx).await;
14445    let base_text = indoc! {r#"struct Row;
14446struct Row1;
14447struct Row2;
14448
14449struct Row4;
14450struct Row5;
14451struct Row6;
14452
14453struct Row8;
14454struct Row9;
14455struct Row10;"#};
14456
14457    // Deletion hunks trigger with carets on adjacent rows, so carets and selections have to stay farther to avoid the revert
14458    assert_hunk_revert(
14459        indoc! {r#"struct Row;
14460                   struct Row2;
14461
14462                   ˇstruct Row4;
14463                   struct Row5;
14464                   struct Row6;
14465                   ˇ
14466                   struct Row8;
14467                   struct Row10;"#},
14468        vec![DiffHunkStatusKind::Deleted, DiffHunkStatusKind::Deleted],
14469        indoc! {r#"struct Row;
14470                   struct Row2;
14471
14472                   ˇstruct Row4;
14473                   struct Row5;
14474                   struct Row6;
14475                   ˇ
14476                   struct Row8;
14477                   struct Row10;"#},
14478        base_text,
14479        &mut cx,
14480    );
14481    assert_hunk_revert(
14482        indoc! {r#"struct Row;
14483                   struct Row2;
14484
14485                   «ˇstruct Row4;
14486                   struct» Row5;
14487                   «struct Row6;
14488                   ˇ»
14489                   struct Row8;
14490                   struct Row10;"#},
14491        vec![DiffHunkStatusKind::Deleted, DiffHunkStatusKind::Deleted],
14492        indoc! {r#"struct Row;
14493                   struct Row2;
14494
14495                   «ˇstruct Row4;
14496                   struct» Row5;
14497                   «struct Row6;
14498                   ˇ»
14499                   struct Row8;
14500                   struct Row10;"#},
14501        base_text,
14502        &mut cx,
14503    );
14504
14505    // Deletion hunks are ephemeral, so it's impossible to place the caret into them — Zed triggers reverts for lines, adjacent to carets and selections.
14506    assert_hunk_revert(
14507        indoc! {r#"struct Row;
14508                   ˇstruct Row2;
14509
14510                   struct Row4;
14511                   struct Row5;
14512                   struct Row6;
14513
14514                   struct Row8;ˇ
14515                   struct Row10;"#},
14516        vec![DiffHunkStatusKind::Deleted, DiffHunkStatusKind::Deleted],
14517        indoc! {r#"struct Row;
14518                   struct Row1;
14519                   ˇstruct Row2;
14520
14521                   struct Row4;
14522                   struct Row5;
14523                   struct Row6;
14524
14525                   struct Row8;ˇ
14526                   struct Row9;
14527                   struct Row10;"#},
14528        base_text,
14529        &mut cx,
14530    );
14531    assert_hunk_revert(
14532        indoc! {r#"struct Row;
14533                   struct Row2«ˇ;
14534                   struct Row4;
14535                   struct» Row5;
14536                   «struct Row6;
14537
14538                   struct Row8;ˇ»
14539                   struct Row10;"#},
14540        vec![
14541            DiffHunkStatusKind::Deleted,
14542            DiffHunkStatusKind::Deleted,
14543            DiffHunkStatusKind::Deleted,
14544        ],
14545        indoc! {r#"struct Row;
14546                   struct Row1;
14547                   struct Row2«ˇ;
14548
14549                   struct Row4;
14550                   struct» Row5;
14551                   «struct Row6;
14552
14553                   struct Row8;ˇ»
14554                   struct Row9;
14555                   struct Row10;"#},
14556        base_text,
14557        &mut cx,
14558    );
14559}
14560
14561#[gpui::test]
14562async fn test_multibuffer_reverts(cx: &mut TestAppContext) {
14563    init_test(cx, |_| {});
14564
14565    let base_text_1 = "aaaa\nbbbb\ncccc\ndddd\neeee\nffff\ngggg\nhhhh\niiii\njjjj";
14566    let base_text_2 = "llll\nmmmm\nnnnn\noooo\npppp\nqqqq\nrrrr\nssss\ntttt\nuuuu";
14567    let base_text_3 =
14568        "vvvv\nwwww\nxxxx\nyyyy\nzzzz\n{{{{\n||||\n}}}}\n~~~~\n\u{7f}\u{7f}\u{7f}\u{7f}";
14569
14570    let text_1 = edit_first_char_of_every_line(base_text_1);
14571    let text_2 = edit_first_char_of_every_line(base_text_2);
14572    let text_3 = edit_first_char_of_every_line(base_text_3);
14573
14574    let buffer_1 = cx.new(|cx| Buffer::local(text_1.clone(), cx));
14575    let buffer_2 = cx.new(|cx| Buffer::local(text_2.clone(), cx));
14576    let buffer_3 = cx.new(|cx| Buffer::local(text_3.clone(), cx));
14577
14578    let multibuffer = cx.new(|cx| {
14579        let mut multibuffer = MultiBuffer::new(ReadWrite);
14580        multibuffer.push_excerpts(
14581            buffer_1.clone(),
14582            [
14583                ExcerptRange::new(Point::new(0, 0)..Point::new(3, 0)),
14584                ExcerptRange::new(Point::new(5, 0)..Point::new(7, 0)),
14585                ExcerptRange::new(Point::new(9, 0)..Point::new(10, 4)),
14586            ],
14587            cx,
14588        );
14589        multibuffer.push_excerpts(
14590            buffer_2.clone(),
14591            [
14592                ExcerptRange::new(Point::new(0, 0)..Point::new(3, 0)),
14593                ExcerptRange::new(Point::new(5, 0)..Point::new(7, 0)),
14594                ExcerptRange::new(Point::new(9, 0)..Point::new(10, 4)),
14595            ],
14596            cx,
14597        );
14598        multibuffer.push_excerpts(
14599            buffer_3.clone(),
14600            [
14601                ExcerptRange::new(Point::new(0, 0)..Point::new(3, 0)),
14602                ExcerptRange::new(Point::new(5, 0)..Point::new(7, 0)),
14603                ExcerptRange::new(Point::new(9, 0)..Point::new(10, 4)),
14604            ],
14605            cx,
14606        );
14607        multibuffer
14608    });
14609
14610    let fs = FakeFs::new(cx.executor());
14611    let project = Project::test(fs, [path!("/").as_ref()], cx).await;
14612    let (editor, cx) = cx
14613        .add_window_view(|window, cx| build_editor_with_project(project, multibuffer, window, cx));
14614    editor.update_in(cx, |editor, _window, cx| {
14615        for (buffer, diff_base) in [
14616            (buffer_1.clone(), base_text_1),
14617            (buffer_2.clone(), base_text_2),
14618            (buffer_3.clone(), base_text_3),
14619        ] {
14620            let diff = cx.new(|cx| BufferDiff::new_with_base_text(&diff_base, &buffer, cx));
14621            editor
14622                .buffer
14623                .update(cx, |buffer, cx| buffer.add_diff(diff, cx));
14624        }
14625    });
14626    cx.executor().run_until_parked();
14627
14628    editor.update_in(cx, |editor, window, cx| {
14629        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}");
14630        editor.select_all(&SelectAll, window, cx);
14631        editor.git_restore(&Default::default(), window, cx);
14632    });
14633    cx.executor().run_until_parked();
14634
14635    // When all ranges are selected, all buffer hunks are reverted.
14636    editor.update(cx, |editor, cx| {
14637        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");
14638    });
14639    buffer_1.update(cx, |buffer, _| {
14640        assert_eq!(buffer.text(), base_text_1);
14641    });
14642    buffer_2.update(cx, |buffer, _| {
14643        assert_eq!(buffer.text(), base_text_2);
14644    });
14645    buffer_3.update(cx, |buffer, _| {
14646        assert_eq!(buffer.text(), base_text_3);
14647    });
14648
14649    editor.update_in(cx, |editor, window, cx| {
14650        editor.undo(&Default::default(), window, cx);
14651    });
14652
14653    editor.update_in(cx, |editor, window, cx| {
14654        editor.change_selections(None, window, cx, |s| {
14655            s.select_ranges(Some(Point::new(0, 0)..Point::new(6, 0)));
14656        });
14657        editor.git_restore(&Default::default(), window, cx);
14658    });
14659
14660    // Now, when all ranges selected belong to buffer_1, the revert should succeed,
14661    // but not affect buffer_2 and its related excerpts.
14662    editor.update(cx, |editor, cx| {
14663        assert_eq!(
14664            editor.text(cx),
14665            "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}"
14666        );
14667    });
14668    buffer_1.update(cx, |buffer, _| {
14669        assert_eq!(buffer.text(), base_text_1);
14670    });
14671    buffer_2.update(cx, |buffer, _| {
14672        assert_eq!(
14673            buffer.text(),
14674            "Xlll\nXmmm\nXnnn\nXooo\nXppp\nXqqq\nXrrr\nXsss\nXttt\nXuuu"
14675        );
14676    });
14677    buffer_3.update(cx, |buffer, _| {
14678        assert_eq!(
14679            buffer.text(),
14680            "Xvvv\nXwww\nXxxx\nXyyy\nXzzz\nX{{{\nX|||\nX}}}\nX~~~\nX\u{7f}\u{7f}\u{7f}"
14681        );
14682    });
14683
14684    fn edit_first_char_of_every_line(text: &str) -> String {
14685        text.split('\n')
14686            .map(|line| format!("X{}", &line[1..]))
14687            .collect::<Vec<_>>()
14688            .join("\n")
14689    }
14690}
14691
14692#[gpui::test]
14693async fn test_mutlibuffer_in_navigation_history(cx: &mut TestAppContext) {
14694    init_test(cx, |_| {});
14695
14696    let cols = 4;
14697    let rows = 10;
14698    let sample_text_1 = sample_text(rows, cols, 'a');
14699    assert_eq!(
14700        sample_text_1,
14701        "aaaa\nbbbb\ncccc\ndddd\neeee\nffff\ngggg\nhhhh\niiii\njjjj"
14702    );
14703    let sample_text_2 = sample_text(rows, cols, 'l');
14704    assert_eq!(
14705        sample_text_2,
14706        "llll\nmmmm\nnnnn\noooo\npppp\nqqqq\nrrrr\nssss\ntttt\nuuuu"
14707    );
14708    let sample_text_3 = sample_text(rows, cols, 'v');
14709    assert_eq!(
14710        sample_text_3,
14711        "vvvv\nwwww\nxxxx\nyyyy\nzzzz\n{{{{\n||||\n}}}}\n~~~~\n\u{7f}\u{7f}\u{7f}\u{7f}"
14712    );
14713
14714    let buffer_1 = cx.new(|cx| Buffer::local(sample_text_1.clone(), cx));
14715    let buffer_2 = cx.new(|cx| Buffer::local(sample_text_2.clone(), cx));
14716    let buffer_3 = cx.new(|cx| Buffer::local(sample_text_3.clone(), cx));
14717
14718    let multi_buffer = cx.new(|cx| {
14719        let mut multibuffer = MultiBuffer::new(ReadWrite);
14720        multibuffer.push_excerpts(
14721            buffer_1.clone(),
14722            [
14723                ExcerptRange::new(Point::new(0, 0)..Point::new(3, 0)),
14724                ExcerptRange::new(Point::new(5, 0)..Point::new(7, 0)),
14725                ExcerptRange::new(Point::new(9, 0)..Point::new(10, 4)),
14726            ],
14727            cx,
14728        );
14729        multibuffer.push_excerpts(
14730            buffer_2.clone(),
14731            [
14732                ExcerptRange::new(Point::new(0, 0)..Point::new(3, 0)),
14733                ExcerptRange::new(Point::new(5, 0)..Point::new(7, 0)),
14734                ExcerptRange::new(Point::new(9, 0)..Point::new(10, 4)),
14735            ],
14736            cx,
14737        );
14738        multibuffer.push_excerpts(
14739            buffer_3.clone(),
14740            [
14741                ExcerptRange::new(Point::new(0, 0)..Point::new(3, 0)),
14742                ExcerptRange::new(Point::new(5, 0)..Point::new(7, 0)),
14743                ExcerptRange::new(Point::new(9, 0)..Point::new(10, 4)),
14744            ],
14745            cx,
14746        );
14747        multibuffer
14748    });
14749
14750    let fs = FakeFs::new(cx.executor());
14751    fs.insert_tree(
14752        "/a",
14753        json!({
14754            "main.rs": sample_text_1,
14755            "other.rs": sample_text_2,
14756            "lib.rs": sample_text_3,
14757        }),
14758    )
14759    .await;
14760    let project = Project::test(fs, ["/a".as_ref()], cx).await;
14761    let workspace = cx.add_window(|window, cx| Workspace::test_new(project.clone(), window, cx));
14762    let cx = &mut VisualTestContext::from_window(*workspace.deref(), cx);
14763    let multi_buffer_editor = cx.new_window_entity(|window, cx| {
14764        Editor::new(
14765            EditorMode::full(),
14766            multi_buffer,
14767            Some(project.clone()),
14768            window,
14769            cx,
14770        )
14771    });
14772    let multibuffer_item_id = workspace
14773        .update(cx, |workspace, window, cx| {
14774            assert!(
14775                workspace.active_item(cx).is_none(),
14776                "active item should be None before the first item is added"
14777            );
14778            workspace.add_item_to_active_pane(
14779                Box::new(multi_buffer_editor.clone()),
14780                None,
14781                true,
14782                window,
14783                cx,
14784            );
14785            let active_item = workspace
14786                .active_item(cx)
14787                .expect("should have an active item after adding the multi buffer");
14788            assert!(
14789                !active_item.is_singleton(cx),
14790                "A multi buffer was expected to active after adding"
14791            );
14792            active_item.item_id()
14793        })
14794        .unwrap();
14795    cx.executor().run_until_parked();
14796
14797    multi_buffer_editor.update_in(cx, |editor, window, cx| {
14798        editor.change_selections(Some(Autoscroll::Next), window, cx, |s| {
14799            s.select_ranges(Some(1..2))
14800        });
14801        editor.open_excerpts(&OpenExcerpts, window, cx);
14802    });
14803    cx.executor().run_until_parked();
14804    let first_item_id = workspace
14805        .update(cx, |workspace, window, cx| {
14806            let active_item = workspace
14807                .active_item(cx)
14808                .expect("should have an active item after navigating into the 1st buffer");
14809            let first_item_id = active_item.item_id();
14810            assert_ne!(
14811                first_item_id, multibuffer_item_id,
14812                "Should navigate into the 1st buffer and activate it"
14813            );
14814            assert!(
14815                active_item.is_singleton(cx),
14816                "New active item should be a singleton buffer"
14817            );
14818            assert_eq!(
14819                active_item
14820                    .act_as::<Editor>(cx)
14821                    .expect("should have navigated into an editor for the 1st buffer")
14822                    .read(cx)
14823                    .text(cx),
14824                sample_text_1
14825            );
14826
14827            workspace
14828                .go_back(workspace.active_pane().downgrade(), window, cx)
14829                .detach_and_log_err(cx);
14830
14831            first_item_id
14832        })
14833        .unwrap();
14834    cx.executor().run_until_parked();
14835    workspace
14836        .update(cx, |workspace, _, cx| {
14837            let active_item = workspace
14838                .active_item(cx)
14839                .expect("should have an active item after navigating back");
14840            assert_eq!(
14841                active_item.item_id(),
14842                multibuffer_item_id,
14843                "Should navigate back to the multi buffer"
14844            );
14845            assert!(!active_item.is_singleton(cx));
14846        })
14847        .unwrap();
14848
14849    multi_buffer_editor.update_in(cx, |editor, window, cx| {
14850        editor.change_selections(Some(Autoscroll::Next), window, cx, |s| {
14851            s.select_ranges(Some(39..40))
14852        });
14853        editor.open_excerpts(&OpenExcerpts, window, cx);
14854    });
14855    cx.executor().run_until_parked();
14856    let second_item_id = workspace
14857        .update(cx, |workspace, window, cx| {
14858            let active_item = workspace
14859                .active_item(cx)
14860                .expect("should have an active item after navigating into the 2nd buffer");
14861            let second_item_id = active_item.item_id();
14862            assert_ne!(
14863                second_item_id, multibuffer_item_id,
14864                "Should navigate away from the multibuffer"
14865            );
14866            assert_ne!(
14867                second_item_id, first_item_id,
14868                "Should navigate into the 2nd buffer and activate it"
14869            );
14870            assert!(
14871                active_item.is_singleton(cx),
14872                "New active item should be a singleton buffer"
14873            );
14874            assert_eq!(
14875                active_item
14876                    .act_as::<Editor>(cx)
14877                    .expect("should have navigated into an editor")
14878                    .read(cx)
14879                    .text(cx),
14880                sample_text_2
14881            );
14882
14883            workspace
14884                .go_back(workspace.active_pane().downgrade(), window, cx)
14885                .detach_and_log_err(cx);
14886
14887            second_item_id
14888        })
14889        .unwrap();
14890    cx.executor().run_until_parked();
14891    workspace
14892        .update(cx, |workspace, _, cx| {
14893            let active_item = workspace
14894                .active_item(cx)
14895                .expect("should have an active item after navigating back from the 2nd buffer");
14896            assert_eq!(
14897                active_item.item_id(),
14898                multibuffer_item_id,
14899                "Should navigate back from the 2nd buffer to the multi buffer"
14900            );
14901            assert!(!active_item.is_singleton(cx));
14902        })
14903        .unwrap();
14904
14905    multi_buffer_editor.update_in(cx, |editor, window, cx| {
14906        editor.change_selections(Some(Autoscroll::Next), window, cx, |s| {
14907            s.select_ranges(Some(70..70))
14908        });
14909        editor.open_excerpts(&OpenExcerpts, window, cx);
14910    });
14911    cx.executor().run_until_parked();
14912    workspace
14913        .update(cx, |workspace, window, cx| {
14914            let active_item = workspace
14915                .active_item(cx)
14916                .expect("should have an active item after navigating into the 3rd buffer");
14917            let third_item_id = active_item.item_id();
14918            assert_ne!(
14919                third_item_id, multibuffer_item_id,
14920                "Should navigate into the 3rd buffer and activate it"
14921            );
14922            assert_ne!(third_item_id, first_item_id);
14923            assert_ne!(third_item_id, second_item_id);
14924            assert!(
14925                active_item.is_singleton(cx),
14926                "New active item should be a singleton buffer"
14927            );
14928            assert_eq!(
14929                active_item
14930                    .act_as::<Editor>(cx)
14931                    .expect("should have navigated into an editor")
14932                    .read(cx)
14933                    .text(cx),
14934                sample_text_3
14935            );
14936
14937            workspace
14938                .go_back(workspace.active_pane().downgrade(), window, cx)
14939                .detach_and_log_err(cx);
14940        })
14941        .unwrap();
14942    cx.executor().run_until_parked();
14943    workspace
14944        .update(cx, |workspace, _, cx| {
14945            let active_item = workspace
14946                .active_item(cx)
14947                .expect("should have an active item after navigating back from the 3rd buffer");
14948            assert_eq!(
14949                active_item.item_id(),
14950                multibuffer_item_id,
14951                "Should navigate back from the 3rd buffer to the multi buffer"
14952            );
14953            assert!(!active_item.is_singleton(cx));
14954        })
14955        .unwrap();
14956}
14957
14958#[gpui::test]
14959async fn test_toggle_selected_diff_hunks(executor: BackgroundExecutor, cx: &mut TestAppContext) {
14960    init_test(cx, |_| {});
14961
14962    let mut cx = EditorTestContext::new(cx).await;
14963
14964    let diff_base = r#"
14965        use some::mod;
14966
14967        const A: u32 = 42;
14968
14969        fn main() {
14970            println!("hello");
14971
14972            println!("world");
14973        }
14974        "#
14975    .unindent();
14976
14977    cx.set_state(
14978        &r#"
14979        use some::modified;
14980
14981        ˇ
14982        fn main() {
14983            println!("hello there");
14984
14985            println!("around the");
14986            println!("world");
14987        }
14988        "#
14989        .unindent(),
14990    );
14991
14992    cx.set_head_text(&diff_base);
14993    executor.run_until_parked();
14994
14995    cx.update_editor(|editor, window, cx| {
14996        editor.go_to_next_hunk(&GoToHunk, window, cx);
14997        editor.toggle_selected_diff_hunks(&ToggleSelectedDiffHunks, window, cx);
14998    });
14999    executor.run_until_parked();
15000    cx.assert_state_with_diff(
15001        r#"
15002          use some::modified;
15003
15004
15005          fn main() {
15006        -     println!("hello");
15007        + ˇ    println!("hello there");
15008
15009              println!("around the");
15010              println!("world");
15011          }
15012        "#
15013        .unindent(),
15014    );
15015
15016    cx.update_editor(|editor, window, cx| {
15017        for _ in 0..2 {
15018            editor.go_to_next_hunk(&GoToHunk, window, cx);
15019            editor.toggle_selected_diff_hunks(&ToggleSelectedDiffHunks, window, cx);
15020        }
15021    });
15022    executor.run_until_parked();
15023    cx.assert_state_with_diff(
15024        r#"
15025        - use some::mod;
15026        + ˇuse some::modified;
15027
15028
15029          fn main() {
15030        -     println!("hello");
15031        +     println!("hello there");
15032
15033        +     println!("around the");
15034              println!("world");
15035          }
15036        "#
15037        .unindent(),
15038    );
15039
15040    cx.update_editor(|editor, window, cx| {
15041        editor.go_to_next_hunk(&GoToHunk, window, cx);
15042        editor.toggle_selected_diff_hunks(&ToggleSelectedDiffHunks, window, cx);
15043    });
15044    executor.run_until_parked();
15045    cx.assert_state_with_diff(
15046        r#"
15047        - use some::mod;
15048        + use some::modified;
15049
15050        - const A: u32 = 42;
15051          ˇ
15052          fn main() {
15053        -     println!("hello");
15054        +     println!("hello there");
15055
15056        +     println!("around the");
15057              println!("world");
15058          }
15059        "#
15060        .unindent(),
15061    );
15062
15063    cx.update_editor(|editor, window, cx| {
15064        editor.cancel(&Cancel, window, cx);
15065    });
15066
15067    cx.assert_state_with_diff(
15068        r#"
15069          use some::modified;
15070
15071          ˇ
15072          fn main() {
15073              println!("hello there");
15074
15075              println!("around the");
15076              println!("world");
15077          }
15078        "#
15079        .unindent(),
15080    );
15081}
15082
15083#[gpui::test]
15084async fn test_diff_base_change_with_expanded_diff_hunks(
15085    executor: BackgroundExecutor,
15086    cx: &mut TestAppContext,
15087) {
15088    init_test(cx, |_| {});
15089
15090    let mut cx = EditorTestContext::new(cx).await;
15091
15092    let diff_base = r#"
15093        use some::mod1;
15094        use some::mod2;
15095
15096        const A: u32 = 42;
15097        const B: u32 = 42;
15098        const C: u32 = 42;
15099
15100        fn main() {
15101            println!("hello");
15102
15103            println!("world");
15104        }
15105        "#
15106    .unindent();
15107
15108    cx.set_state(
15109        &r#"
15110        use some::mod2;
15111
15112        const A: u32 = 42;
15113        const C: u32 = 42;
15114
15115        fn main(ˇ) {
15116            //println!("hello");
15117
15118            println!("world");
15119            //
15120            //
15121        }
15122        "#
15123        .unindent(),
15124    );
15125
15126    cx.set_head_text(&diff_base);
15127    executor.run_until_parked();
15128
15129    cx.update_editor(|editor, window, cx| {
15130        editor.expand_all_diff_hunks(&ExpandAllDiffHunks, window, cx);
15131    });
15132    executor.run_until_parked();
15133    cx.assert_state_with_diff(
15134        r#"
15135        - use some::mod1;
15136          use some::mod2;
15137
15138          const A: u32 = 42;
15139        - const B: u32 = 42;
15140          const C: u32 = 42;
15141
15142          fn main(ˇ) {
15143        -     println!("hello");
15144        +     //println!("hello");
15145
15146              println!("world");
15147        +     //
15148        +     //
15149          }
15150        "#
15151        .unindent(),
15152    );
15153
15154    cx.set_head_text("new diff base!");
15155    executor.run_until_parked();
15156    cx.assert_state_with_diff(
15157        r#"
15158        - new diff base!
15159        + use some::mod2;
15160        +
15161        + const A: u32 = 42;
15162        + const C: u32 = 42;
15163        +
15164        + fn main(ˇ) {
15165        +     //println!("hello");
15166        +
15167        +     println!("world");
15168        +     //
15169        +     //
15170        + }
15171        "#
15172        .unindent(),
15173    );
15174}
15175
15176#[gpui::test]
15177async fn test_toggle_diff_expand_in_multi_buffer(cx: &mut TestAppContext) {
15178    init_test(cx, |_| {});
15179
15180    let file_1_old = "aaa\nbbb\nccc\nddd\neee\nfff\nggg\nhhh\niii\njjj";
15181    let file_1_new = "aaa\nccc\nddd\neee\nfff\nggg\nhhh\niii\njjj";
15182    let file_2_old = "lll\nmmm\nnnn\nooo\nppp\nqqq\nrrr\nsss\nttt\nuuu";
15183    let file_2_new = "lll\nmmm\nNNN\nooo\nppp\nqqq\nrrr\nsss\nttt\nuuu";
15184    let file_3_old = "111\n222\n333\n444\n555\n777\n888\n999\n000\n!!!";
15185    let file_3_new = "111\n222\n333\n444\n555\n666\n777\n888\n999\n000\n!!!";
15186
15187    let buffer_1 = cx.new(|cx| Buffer::local(file_1_new.to_string(), cx));
15188    let buffer_2 = cx.new(|cx| Buffer::local(file_2_new.to_string(), cx));
15189    let buffer_3 = cx.new(|cx| Buffer::local(file_3_new.to_string(), cx));
15190
15191    let multi_buffer = cx.new(|cx| {
15192        let mut multibuffer = MultiBuffer::new(ReadWrite);
15193        multibuffer.push_excerpts(
15194            buffer_1.clone(),
15195            [
15196                ExcerptRange::new(Point::new(0, 0)..Point::new(3, 0)),
15197                ExcerptRange::new(Point::new(5, 0)..Point::new(7, 0)),
15198                ExcerptRange::new(Point::new(9, 0)..Point::new(10, 3)),
15199            ],
15200            cx,
15201        );
15202        multibuffer.push_excerpts(
15203            buffer_2.clone(),
15204            [
15205                ExcerptRange::new(Point::new(0, 0)..Point::new(3, 0)),
15206                ExcerptRange::new(Point::new(5, 0)..Point::new(7, 0)),
15207                ExcerptRange::new(Point::new(9, 0)..Point::new(10, 3)),
15208            ],
15209            cx,
15210        );
15211        multibuffer.push_excerpts(
15212            buffer_3.clone(),
15213            [
15214                ExcerptRange::new(Point::new(0, 0)..Point::new(3, 0)),
15215                ExcerptRange::new(Point::new(5, 0)..Point::new(7, 0)),
15216                ExcerptRange::new(Point::new(9, 0)..Point::new(10, 3)),
15217            ],
15218            cx,
15219        );
15220        multibuffer
15221    });
15222
15223    let editor =
15224        cx.add_window(|window, cx| Editor::new(EditorMode::full(), multi_buffer, None, window, cx));
15225    editor
15226        .update(cx, |editor, _window, cx| {
15227            for (buffer, diff_base) in [
15228                (buffer_1.clone(), file_1_old),
15229                (buffer_2.clone(), file_2_old),
15230                (buffer_3.clone(), file_3_old),
15231            ] {
15232                let diff = cx.new(|cx| BufferDiff::new_with_base_text(&diff_base, &buffer, cx));
15233                editor
15234                    .buffer
15235                    .update(cx, |buffer, cx| buffer.add_diff(diff, cx));
15236            }
15237        })
15238        .unwrap();
15239
15240    let mut cx = EditorTestContext::for_editor(editor, cx).await;
15241    cx.run_until_parked();
15242
15243    cx.assert_editor_state(
15244        &"
15245            ˇaaa
15246            ccc
15247            ddd
15248
15249            ggg
15250            hhh
15251
15252
15253            lll
15254            mmm
15255            NNN
15256
15257            qqq
15258            rrr
15259
15260            uuu
15261            111
15262            222
15263            333
15264
15265            666
15266            777
15267
15268            000
15269            !!!"
15270        .unindent(),
15271    );
15272
15273    cx.update_editor(|editor, window, cx| {
15274        editor.select_all(&SelectAll, window, cx);
15275        editor.toggle_selected_diff_hunks(&ToggleSelectedDiffHunks, window, cx);
15276    });
15277    cx.executor().run_until_parked();
15278
15279    cx.assert_state_with_diff(
15280        "
15281            «aaa
15282          - bbb
15283            ccc
15284            ddd
15285
15286            ggg
15287            hhh
15288
15289
15290            lll
15291            mmm
15292          - nnn
15293          + NNN
15294
15295            qqq
15296            rrr
15297
15298            uuu
15299            111
15300            222
15301            333
15302
15303          + 666
15304            777
15305
15306            000
15307            !!!ˇ»"
15308            .unindent(),
15309    );
15310}
15311
15312#[gpui::test]
15313async fn test_expand_diff_hunk_at_excerpt_boundary(cx: &mut TestAppContext) {
15314    init_test(cx, |_| {});
15315
15316    let base = "aaa\nbbb\nccc\nddd\neee\nfff\nggg\n";
15317    let text = "aaa\nBBB\nBB2\nccc\nDDD\nEEE\nfff\nggg\nhhh\niii\n";
15318
15319    let buffer = cx.new(|cx| Buffer::local(text.to_string(), cx));
15320    let multi_buffer = cx.new(|cx| {
15321        let mut multibuffer = MultiBuffer::new(ReadWrite);
15322        multibuffer.push_excerpts(
15323            buffer.clone(),
15324            [
15325                ExcerptRange::new(Point::new(0, 0)..Point::new(2, 0)),
15326                ExcerptRange::new(Point::new(4, 0)..Point::new(7, 0)),
15327                ExcerptRange::new(Point::new(9, 0)..Point::new(10, 0)),
15328            ],
15329            cx,
15330        );
15331        multibuffer
15332    });
15333
15334    let editor =
15335        cx.add_window(|window, cx| Editor::new(EditorMode::full(), multi_buffer, None, window, cx));
15336    editor
15337        .update(cx, |editor, _window, cx| {
15338            let diff = cx.new(|cx| BufferDiff::new_with_base_text(base, &buffer, cx));
15339            editor
15340                .buffer
15341                .update(cx, |buffer, cx| buffer.add_diff(diff, cx))
15342        })
15343        .unwrap();
15344
15345    let mut cx = EditorTestContext::for_editor(editor, cx).await;
15346    cx.run_until_parked();
15347
15348    cx.update_editor(|editor, window, cx| {
15349        editor.expand_all_diff_hunks(&Default::default(), window, cx)
15350    });
15351    cx.executor().run_until_parked();
15352
15353    // When the start of a hunk coincides with the start of its excerpt,
15354    // the hunk is expanded. When the start of a a hunk is earlier than
15355    // the start of its excerpt, the hunk is not expanded.
15356    cx.assert_state_with_diff(
15357        "
15358            ˇaaa
15359          - bbb
15360          + BBB
15361
15362          - ddd
15363          - eee
15364          + DDD
15365          + EEE
15366            fff
15367
15368            iii
15369        "
15370        .unindent(),
15371    );
15372}
15373
15374#[gpui::test]
15375async fn test_edits_around_expanded_insertion_hunks(
15376    executor: BackgroundExecutor,
15377    cx: &mut TestAppContext,
15378) {
15379    init_test(cx, |_| {});
15380
15381    let mut cx = EditorTestContext::new(cx).await;
15382
15383    let diff_base = r#"
15384        use some::mod1;
15385        use some::mod2;
15386
15387        const A: u32 = 42;
15388
15389        fn main() {
15390            println!("hello");
15391
15392            println!("world");
15393        }
15394        "#
15395    .unindent();
15396    executor.run_until_parked();
15397    cx.set_state(
15398        &r#"
15399        use some::mod1;
15400        use some::mod2;
15401
15402        const A: u32 = 42;
15403        const B: u32 = 42;
15404        const C: u32 = 42;
15405        ˇ
15406
15407        fn main() {
15408            println!("hello");
15409
15410            println!("world");
15411        }
15412        "#
15413        .unindent(),
15414    );
15415
15416    cx.set_head_text(&diff_base);
15417    executor.run_until_parked();
15418
15419    cx.update_editor(|editor, window, cx| {
15420        editor.expand_all_diff_hunks(&ExpandAllDiffHunks, window, cx);
15421    });
15422    executor.run_until_parked();
15423
15424    cx.assert_state_with_diff(
15425        r#"
15426        use some::mod1;
15427        use some::mod2;
15428
15429        const A: u32 = 42;
15430      + const B: u32 = 42;
15431      + const C: u32 = 42;
15432      + ˇ
15433
15434        fn main() {
15435            println!("hello");
15436
15437            println!("world");
15438        }
15439      "#
15440        .unindent(),
15441    );
15442
15443    cx.update_editor(|editor, window, cx| editor.handle_input("const D: u32 = 42;\n", window, cx));
15444    executor.run_until_parked();
15445
15446    cx.assert_state_with_diff(
15447        r#"
15448        use some::mod1;
15449        use some::mod2;
15450
15451        const A: u32 = 42;
15452      + const B: u32 = 42;
15453      + const C: u32 = 42;
15454      + const D: u32 = 42;
15455      + ˇ
15456
15457        fn main() {
15458            println!("hello");
15459
15460            println!("world");
15461        }
15462      "#
15463        .unindent(),
15464    );
15465
15466    cx.update_editor(|editor, window, cx| editor.handle_input("const E: u32 = 42;\n", window, cx));
15467    executor.run_until_parked();
15468
15469    cx.assert_state_with_diff(
15470        r#"
15471        use some::mod1;
15472        use some::mod2;
15473
15474        const A: u32 = 42;
15475      + const B: u32 = 42;
15476      + const C: u32 = 42;
15477      + const D: u32 = 42;
15478      + const E: u32 = 42;
15479      + ˇ
15480
15481        fn main() {
15482            println!("hello");
15483
15484            println!("world");
15485        }
15486      "#
15487        .unindent(),
15488    );
15489
15490    cx.update_editor(|editor, window, cx| {
15491        editor.delete_line(&DeleteLine, window, cx);
15492    });
15493    executor.run_until_parked();
15494
15495    cx.assert_state_with_diff(
15496        r#"
15497        use some::mod1;
15498        use some::mod2;
15499
15500        const A: u32 = 42;
15501      + const B: u32 = 42;
15502      + const C: u32 = 42;
15503      + const D: u32 = 42;
15504      + const E: u32 = 42;
15505        ˇ
15506        fn main() {
15507            println!("hello");
15508
15509            println!("world");
15510        }
15511      "#
15512        .unindent(),
15513    );
15514
15515    cx.update_editor(|editor, window, cx| {
15516        editor.move_up(&MoveUp, window, cx);
15517        editor.delete_line(&DeleteLine, window, cx);
15518        editor.move_up(&MoveUp, window, cx);
15519        editor.delete_line(&DeleteLine, window, cx);
15520        editor.move_up(&MoveUp, window, cx);
15521        editor.delete_line(&DeleteLine, window, cx);
15522    });
15523    executor.run_until_parked();
15524    cx.assert_state_with_diff(
15525        r#"
15526        use some::mod1;
15527        use some::mod2;
15528
15529        const A: u32 = 42;
15530      + const B: u32 = 42;
15531        ˇ
15532        fn main() {
15533            println!("hello");
15534
15535            println!("world");
15536        }
15537      "#
15538        .unindent(),
15539    );
15540
15541    cx.update_editor(|editor, window, cx| {
15542        editor.select_up_by_lines(&SelectUpByLines { lines: 5 }, window, cx);
15543        editor.delete_line(&DeleteLine, window, cx);
15544    });
15545    executor.run_until_parked();
15546    cx.assert_state_with_diff(
15547        r#"
15548        ˇ
15549        fn main() {
15550            println!("hello");
15551
15552            println!("world");
15553        }
15554      "#
15555        .unindent(),
15556    );
15557}
15558
15559#[gpui::test]
15560async fn test_toggling_adjacent_diff_hunks(cx: &mut TestAppContext) {
15561    init_test(cx, |_| {});
15562
15563    let mut cx = EditorTestContext::new(cx).await;
15564    cx.set_head_text(indoc! { "
15565        one
15566        two
15567        three
15568        four
15569        five
15570        "
15571    });
15572    cx.set_state(indoc! { "
15573        one
15574        ˇthree
15575        five
15576    "});
15577    cx.run_until_parked();
15578    cx.update_editor(|editor, window, cx| {
15579        editor.toggle_selected_diff_hunks(&Default::default(), window, cx);
15580    });
15581    cx.assert_state_with_diff(
15582        indoc! { "
15583        one
15584      - two
15585        ˇthree
15586      - four
15587        five
15588    "}
15589        .to_string(),
15590    );
15591    cx.update_editor(|editor, window, cx| {
15592        editor.toggle_selected_diff_hunks(&Default::default(), window, cx);
15593    });
15594
15595    cx.assert_state_with_diff(
15596        indoc! { "
15597        one
15598        ˇthree
15599        five
15600    "}
15601        .to_string(),
15602    );
15603
15604    cx.set_state(indoc! { "
15605        one
15606        ˇTWO
15607        three
15608        four
15609        five
15610    "});
15611    cx.run_until_parked();
15612    cx.update_editor(|editor, window, cx| {
15613        editor.toggle_selected_diff_hunks(&Default::default(), window, cx);
15614    });
15615
15616    cx.assert_state_with_diff(
15617        indoc! { "
15618            one
15619          - two
15620          + ˇTWO
15621            three
15622            four
15623            five
15624        "}
15625        .to_string(),
15626    );
15627    cx.update_editor(|editor, window, cx| {
15628        editor.move_up(&Default::default(), window, cx);
15629        editor.toggle_selected_diff_hunks(&Default::default(), window, cx);
15630    });
15631    cx.assert_state_with_diff(
15632        indoc! { "
15633            one
15634            ˇTWO
15635            three
15636            four
15637            five
15638        "}
15639        .to_string(),
15640    );
15641}
15642
15643#[gpui::test]
15644async fn test_edits_around_expanded_deletion_hunks(
15645    executor: BackgroundExecutor,
15646    cx: &mut TestAppContext,
15647) {
15648    init_test(cx, |_| {});
15649
15650    let mut cx = EditorTestContext::new(cx).await;
15651
15652    let diff_base = r#"
15653        use some::mod1;
15654        use some::mod2;
15655
15656        const A: u32 = 42;
15657        const B: u32 = 42;
15658        const C: u32 = 42;
15659
15660
15661        fn main() {
15662            println!("hello");
15663
15664            println!("world");
15665        }
15666    "#
15667    .unindent();
15668    executor.run_until_parked();
15669    cx.set_state(
15670        &r#"
15671        use some::mod1;
15672        use some::mod2;
15673
15674        ˇconst B: u32 = 42;
15675        const C: u32 = 42;
15676
15677
15678        fn main() {
15679            println!("hello");
15680
15681            println!("world");
15682        }
15683        "#
15684        .unindent(),
15685    );
15686
15687    cx.set_head_text(&diff_base);
15688    executor.run_until_parked();
15689
15690    cx.update_editor(|editor, window, cx| {
15691        editor.expand_all_diff_hunks(&ExpandAllDiffHunks, window, cx);
15692    });
15693    executor.run_until_parked();
15694
15695    cx.assert_state_with_diff(
15696        r#"
15697        use some::mod1;
15698        use some::mod2;
15699
15700      - const A: u32 = 42;
15701        ˇconst B: u32 = 42;
15702        const C: u32 = 42;
15703
15704
15705        fn main() {
15706            println!("hello");
15707
15708            println!("world");
15709        }
15710      "#
15711        .unindent(),
15712    );
15713
15714    cx.update_editor(|editor, window, cx| {
15715        editor.delete_line(&DeleteLine, window, cx);
15716    });
15717    executor.run_until_parked();
15718    cx.assert_state_with_diff(
15719        r#"
15720        use some::mod1;
15721        use some::mod2;
15722
15723      - const A: u32 = 42;
15724      - const B: u32 = 42;
15725        ˇconst C: u32 = 42;
15726
15727
15728        fn main() {
15729            println!("hello");
15730
15731            println!("world");
15732        }
15733      "#
15734        .unindent(),
15735    );
15736
15737    cx.update_editor(|editor, window, cx| {
15738        editor.delete_line(&DeleteLine, window, cx);
15739    });
15740    executor.run_until_parked();
15741    cx.assert_state_with_diff(
15742        r#"
15743        use some::mod1;
15744        use some::mod2;
15745
15746      - const A: u32 = 42;
15747      - const B: u32 = 42;
15748      - const C: u32 = 42;
15749        ˇ
15750
15751        fn main() {
15752            println!("hello");
15753
15754            println!("world");
15755        }
15756      "#
15757        .unindent(),
15758    );
15759
15760    cx.update_editor(|editor, window, cx| {
15761        editor.handle_input("replacement", window, cx);
15762    });
15763    executor.run_until_parked();
15764    cx.assert_state_with_diff(
15765        r#"
15766        use some::mod1;
15767        use some::mod2;
15768
15769      - const A: u32 = 42;
15770      - const B: u32 = 42;
15771      - const C: u32 = 42;
15772      -
15773      + replacementˇ
15774
15775        fn main() {
15776            println!("hello");
15777
15778            println!("world");
15779        }
15780      "#
15781        .unindent(),
15782    );
15783}
15784
15785#[gpui::test]
15786async fn test_backspace_after_deletion_hunk(executor: BackgroundExecutor, cx: &mut TestAppContext) {
15787    init_test(cx, |_| {});
15788
15789    let mut cx = EditorTestContext::new(cx).await;
15790
15791    let base_text = r#"
15792        one
15793        two
15794        three
15795        four
15796        five
15797    "#
15798    .unindent();
15799    executor.run_until_parked();
15800    cx.set_state(
15801        &r#"
15802        one
15803        two
15804        fˇour
15805        five
15806        "#
15807        .unindent(),
15808    );
15809
15810    cx.set_head_text(&base_text);
15811    executor.run_until_parked();
15812
15813    cx.update_editor(|editor, window, cx| {
15814        editor.expand_all_diff_hunks(&ExpandAllDiffHunks, window, cx);
15815    });
15816    executor.run_until_parked();
15817
15818    cx.assert_state_with_diff(
15819        r#"
15820          one
15821          two
15822        - three
15823          fˇour
15824          five
15825        "#
15826        .unindent(),
15827    );
15828
15829    cx.update_editor(|editor, window, cx| {
15830        editor.backspace(&Backspace, window, cx);
15831        editor.backspace(&Backspace, window, cx);
15832    });
15833    executor.run_until_parked();
15834    cx.assert_state_with_diff(
15835        r#"
15836          one
15837          two
15838        - threeˇ
15839        - four
15840        + our
15841          five
15842        "#
15843        .unindent(),
15844    );
15845}
15846
15847#[gpui::test]
15848async fn test_edit_after_expanded_modification_hunk(
15849    executor: BackgroundExecutor,
15850    cx: &mut TestAppContext,
15851) {
15852    init_test(cx, |_| {});
15853
15854    let mut cx = EditorTestContext::new(cx).await;
15855
15856    let diff_base = r#"
15857        use some::mod1;
15858        use some::mod2;
15859
15860        const A: u32 = 42;
15861        const B: u32 = 42;
15862        const C: u32 = 42;
15863        const D: u32 = 42;
15864
15865
15866        fn main() {
15867            println!("hello");
15868
15869            println!("world");
15870        }"#
15871    .unindent();
15872
15873    cx.set_state(
15874        &r#"
15875        use some::mod1;
15876        use some::mod2;
15877
15878        const A: u32 = 42;
15879        const B: u32 = 42;
15880        const C: u32 = 43ˇ
15881        const D: u32 = 42;
15882
15883
15884        fn main() {
15885            println!("hello");
15886
15887            println!("world");
15888        }"#
15889        .unindent(),
15890    );
15891
15892    cx.set_head_text(&diff_base);
15893    executor.run_until_parked();
15894    cx.update_editor(|editor, window, cx| {
15895        editor.expand_all_diff_hunks(&ExpandAllDiffHunks, window, cx);
15896    });
15897    executor.run_until_parked();
15898
15899    cx.assert_state_with_diff(
15900        r#"
15901        use some::mod1;
15902        use some::mod2;
15903
15904        const A: u32 = 42;
15905        const B: u32 = 42;
15906      - const C: u32 = 42;
15907      + const C: u32 = 43ˇ
15908        const D: u32 = 42;
15909
15910
15911        fn main() {
15912            println!("hello");
15913
15914            println!("world");
15915        }"#
15916        .unindent(),
15917    );
15918
15919    cx.update_editor(|editor, window, cx| {
15920        editor.handle_input("\nnew_line\n", window, cx);
15921    });
15922    executor.run_until_parked();
15923
15924    cx.assert_state_with_diff(
15925        r#"
15926        use some::mod1;
15927        use some::mod2;
15928
15929        const A: u32 = 42;
15930        const B: u32 = 42;
15931      - const C: u32 = 42;
15932      + const C: u32 = 43
15933      + new_line
15934      + ˇ
15935        const D: u32 = 42;
15936
15937
15938        fn main() {
15939            println!("hello");
15940
15941            println!("world");
15942        }"#
15943        .unindent(),
15944    );
15945}
15946
15947#[gpui::test]
15948async fn test_stage_and_unstage_added_file_hunk(
15949    executor: BackgroundExecutor,
15950    cx: &mut TestAppContext,
15951) {
15952    init_test(cx, |_| {});
15953
15954    let mut cx = EditorTestContext::new(cx).await;
15955    cx.update_editor(|editor, _, cx| {
15956        editor.set_expand_all_diff_hunks(cx);
15957    });
15958
15959    let working_copy = r#"
15960            ˇfn main() {
15961                println!("hello, world!");
15962            }
15963        "#
15964    .unindent();
15965
15966    cx.set_state(&working_copy);
15967    executor.run_until_parked();
15968
15969    cx.assert_state_with_diff(
15970        r#"
15971            + ˇfn main() {
15972            +     println!("hello, world!");
15973            + }
15974        "#
15975        .unindent(),
15976    );
15977    cx.assert_index_text(None);
15978
15979    cx.update_editor(|editor, window, cx| {
15980        editor.toggle_staged_selected_diff_hunks(&Default::default(), window, cx);
15981    });
15982    executor.run_until_parked();
15983    cx.assert_index_text(Some(&working_copy.replace("ˇ", "")));
15984    cx.assert_state_with_diff(
15985        r#"
15986            + ˇfn main() {
15987            +     println!("hello, world!");
15988            + }
15989        "#
15990        .unindent(),
15991    );
15992
15993    cx.update_editor(|editor, window, cx| {
15994        editor.toggle_staged_selected_diff_hunks(&Default::default(), window, cx);
15995    });
15996    executor.run_until_parked();
15997    cx.assert_index_text(None);
15998}
15999
16000async fn setup_indent_guides_editor(
16001    text: &str,
16002    cx: &mut TestAppContext,
16003) -> (BufferId, EditorTestContext) {
16004    init_test(cx, |_| {});
16005
16006    let mut cx = EditorTestContext::new(cx).await;
16007
16008    let buffer_id = cx.update_editor(|editor, window, cx| {
16009        editor.set_text(text, window, cx);
16010        let buffer_ids = editor.buffer().read(cx).excerpt_buffer_ids();
16011
16012        buffer_ids[0]
16013    });
16014
16015    (buffer_id, cx)
16016}
16017
16018fn assert_indent_guides(
16019    range: Range<u32>,
16020    expected: Vec<IndentGuide>,
16021    active_indices: Option<Vec<usize>>,
16022    cx: &mut EditorTestContext,
16023) {
16024    let indent_guides = cx.update_editor(|editor, window, cx| {
16025        let snapshot = editor.snapshot(window, cx).display_snapshot;
16026        let mut indent_guides: Vec<_> = crate::indent_guides::indent_guides_in_range(
16027            editor,
16028            MultiBufferRow(range.start)..MultiBufferRow(range.end),
16029            true,
16030            &snapshot,
16031            cx,
16032        );
16033
16034        indent_guides.sort_by(|a, b| {
16035            a.depth.cmp(&b.depth).then(
16036                a.start_row
16037                    .cmp(&b.start_row)
16038                    .then(a.end_row.cmp(&b.end_row)),
16039            )
16040        });
16041        indent_guides
16042    });
16043
16044    if let Some(expected) = active_indices {
16045        let active_indices = cx.update_editor(|editor, window, cx| {
16046            let snapshot = editor.snapshot(window, cx).display_snapshot;
16047            editor.find_active_indent_guide_indices(&indent_guides, &snapshot, window, cx)
16048        });
16049
16050        assert_eq!(
16051            active_indices.unwrap().into_iter().collect::<Vec<_>>(),
16052            expected,
16053            "Active indent guide indices do not match"
16054        );
16055    }
16056
16057    assert_eq!(indent_guides, expected, "Indent guides do not match");
16058}
16059
16060fn indent_guide(buffer_id: BufferId, start_row: u32, end_row: u32, depth: u32) -> IndentGuide {
16061    IndentGuide {
16062        buffer_id,
16063        start_row: MultiBufferRow(start_row),
16064        end_row: MultiBufferRow(end_row),
16065        depth,
16066        tab_size: 4,
16067        settings: IndentGuideSettings {
16068            enabled: true,
16069            line_width: 1,
16070            active_line_width: 1,
16071            ..Default::default()
16072        },
16073    }
16074}
16075
16076#[gpui::test]
16077async fn test_indent_guide_single_line(cx: &mut TestAppContext) {
16078    let (buffer_id, mut cx) = setup_indent_guides_editor(
16079        &"
16080    fn main() {
16081        let a = 1;
16082    }"
16083        .unindent(),
16084        cx,
16085    )
16086    .await;
16087
16088    assert_indent_guides(0..3, vec![indent_guide(buffer_id, 1, 1, 0)], None, &mut cx);
16089}
16090
16091#[gpui::test]
16092async fn test_indent_guide_simple_block(cx: &mut TestAppContext) {
16093    let (buffer_id, mut cx) = setup_indent_guides_editor(
16094        &"
16095    fn main() {
16096        let a = 1;
16097        let b = 2;
16098    }"
16099        .unindent(),
16100        cx,
16101    )
16102    .await;
16103
16104    assert_indent_guides(0..4, vec![indent_guide(buffer_id, 1, 2, 0)], None, &mut cx);
16105}
16106
16107#[gpui::test]
16108async fn test_indent_guide_nested(cx: &mut TestAppContext) {
16109    let (buffer_id, mut cx) = setup_indent_guides_editor(
16110        &"
16111    fn main() {
16112        let a = 1;
16113        if a == 3 {
16114            let b = 2;
16115        } else {
16116            let c = 3;
16117        }
16118    }"
16119        .unindent(),
16120        cx,
16121    )
16122    .await;
16123
16124    assert_indent_guides(
16125        0..8,
16126        vec![
16127            indent_guide(buffer_id, 1, 6, 0),
16128            indent_guide(buffer_id, 3, 3, 1),
16129            indent_guide(buffer_id, 5, 5, 1),
16130        ],
16131        None,
16132        &mut cx,
16133    );
16134}
16135
16136#[gpui::test]
16137async fn test_indent_guide_tab(cx: &mut TestAppContext) {
16138    let (buffer_id, mut cx) = setup_indent_guides_editor(
16139        &"
16140    fn main() {
16141        let a = 1;
16142            let b = 2;
16143        let c = 3;
16144    }"
16145        .unindent(),
16146        cx,
16147    )
16148    .await;
16149
16150    assert_indent_guides(
16151        0..5,
16152        vec![
16153            indent_guide(buffer_id, 1, 3, 0),
16154            indent_guide(buffer_id, 2, 2, 1),
16155        ],
16156        None,
16157        &mut cx,
16158    );
16159}
16160
16161#[gpui::test]
16162async fn test_indent_guide_continues_on_empty_line(cx: &mut TestAppContext) {
16163    let (buffer_id, mut cx) = setup_indent_guides_editor(
16164        &"
16165        fn main() {
16166            let a = 1;
16167
16168            let c = 3;
16169        }"
16170        .unindent(),
16171        cx,
16172    )
16173    .await;
16174
16175    assert_indent_guides(0..5, vec![indent_guide(buffer_id, 1, 3, 0)], None, &mut cx);
16176}
16177
16178#[gpui::test]
16179async fn test_indent_guide_complex(cx: &mut TestAppContext) {
16180    let (buffer_id, mut cx) = setup_indent_guides_editor(
16181        &"
16182        fn main() {
16183            let a = 1;
16184
16185            let c = 3;
16186
16187            if a == 3 {
16188                let b = 2;
16189            } else {
16190                let c = 3;
16191            }
16192        }"
16193        .unindent(),
16194        cx,
16195    )
16196    .await;
16197
16198    assert_indent_guides(
16199        0..11,
16200        vec![
16201            indent_guide(buffer_id, 1, 9, 0),
16202            indent_guide(buffer_id, 6, 6, 1),
16203            indent_guide(buffer_id, 8, 8, 1),
16204        ],
16205        None,
16206        &mut cx,
16207    );
16208}
16209
16210#[gpui::test]
16211async fn test_indent_guide_starts_off_screen(cx: &mut TestAppContext) {
16212    let (buffer_id, mut cx) = setup_indent_guides_editor(
16213        &"
16214        fn main() {
16215            let a = 1;
16216
16217            let c = 3;
16218
16219            if a == 3 {
16220                let b = 2;
16221            } else {
16222                let c = 3;
16223            }
16224        }"
16225        .unindent(),
16226        cx,
16227    )
16228    .await;
16229
16230    assert_indent_guides(
16231        1..11,
16232        vec![
16233            indent_guide(buffer_id, 1, 9, 0),
16234            indent_guide(buffer_id, 6, 6, 1),
16235            indent_guide(buffer_id, 8, 8, 1),
16236        ],
16237        None,
16238        &mut cx,
16239    );
16240}
16241
16242#[gpui::test]
16243async fn test_indent_guide_ends_off_screen(cx: &mut TestAppContext) {
16244    let (buffer_id, mut cx) = setup_indent_guides_editor(
16245        &"
16246        fn main() {
16247            let a = 1;
16248
16249            let c = 3;
16250
16251            if a == 3 {
16252                let b = 2;
16253            } else {
16254                let c = 3;
16255            }
16256        }"
16257        .unindent(),
16258        cx,
16259    )
16260    .await;
16261
16262    assert_indent_guides(
16263        1..10,
16264        vec![
16265            indent_guide(buffer_id, 1, 9, 0),
16266            indent_guide(buffer_id, 6, 6, 1),
16267            indent_guide(buffer_id, 8, 8, 1),
16268        ],
16269        None,
16270        &mut cx,
16271    );
16272}
16273
16274#[gpui::test]
16275async fn test_indent_guide_without_brackets(cx: &mut TestAppContext) {
16276    let (buffer_id, mut cx) = setup_indent_guides_editor(
16277        &"
16278        block1
16279            block2
16280                block3
16281                    block4
16282            block2
16283        block1
16284        block1"
16285            .unindent(),
16286        cx,
16287    )
16288    .await;
16289
16290    assert_indent_guides(
16291        1..10,
16292        vec![
16293            indent_guide(buffer_id, 1, 4, 0),
16294            indent_guide(buffer_id, 2, 3, 1),
16295            indent_guide(buffer_id, 3, 3, 2),
16296        ],
16297        None,
16298        &mut cx,
16299    );
16300}
16301
16302#[gpui::test]
16303async fn test_indent_guide_ends_before_empty_line(cx: &mut TestAppContext) {
16304    let (buffer_id, mut cx) = setup_indent_guides_editor(
16305        &"
16306        block1
16307            block2
16308                block3
16309
16310        block1
16311        block1"
16312            .unindent(),
16313        cx,
16314    )
16315    .await;
16316
16317    assert_indent_guides(
16318        0..6,
16319        vec![
16320            indent_guide(buffer_id, 1, 2, 0),
16321            indent_guide(buffer_id, 2, 2, 1),
16322        ],
16323        None,
16324        &mut cx,
16325    );
16326}
16327
16328#[gpui::test]
16329async fn test_indent_guide_continuing_off_screen(cx: &mut TestAppContext) {
16330    let (buffer_id, mut cx) = setup_indent_guides_editor(
16331        &"
16332        block1
16333
16334
16335
16336            block2
16337        "
16338        .unindent(),
16339        cx,
16340    )
16341    .await;
16342
16343    assert_indent_guides(0..1, vec![indent_guide(buffer_id, 1, 1, 0)], None, &mut cx);
16344}
16345
16346#[gpui::test]
16347async fn test_indent_guide_tabs(cx: &mut TestAppContext) {
16348    let (buffer_id, mut cx) = setup_indent_guides_editor(
16349        &"
16350        def a:
16351        \tb = 3
16352        \tif True:
16353        \t\tc = 4
16354        \t\td = 5
16355        \tprint(b)
16356        "
16357        .unindent(),
16358        cx,
16359    )
16360    .await;
16361
16362    assert_indent_guides(
16363        0..6,
16364        vec![
16365            indent_guide(buffer_id, 1, 6, 0),
16366            indent_guide(buffer_id, 3, 4, 1),
16367        ],
16368        None,
16369        &mut cx,
16370    );
16371}
16372
16373#[gpui::test]
16374async fn test_active_indent_guide_single_line(cx: &mut TestAppContext) {
16375    let (buffer_id, mut cx) = setup_indent_guides_editor(
16376        &"
16377    fn main() {
16378        let a = 1;
16379    }"
16380        .unindent(),
16381        cx,
16382    )
16383    .await;
16384
16385    cx.update_editor(|editor, window, cx| {
16386        editor.change_selections(None, window, cx, |s| {
16387            s.select_ranges([Point::new(1, 0)..Point::new(1, 0)])
16388        });
16389    });
16390
16391    assert_indent_guides(
16392        0..3,
16393        vec![indent_guide(buffer_id, 1, 1, 0)],
16394        Some(vec![0]),
16395        &mut cx,
16396    );
16397}
16398
16399#[gpui::test]
16400async fn test_active_indent_guide_respect_indented_range(cx: &mut TestAppContext) {
16401    let (buffer_id, mut cx) = setup_indent_guides_editor(
16402        &"
16403    fn main() {
16404        if 1 == 2 {
16405            let a = 1;
16406        }
16407    }"
16408        .unindent(),
16409        cx,
16410    )
16411    .await;
16412
16413    cx.update_editor(|editor, window, cx| {
16414        editor.change_selections(None, window, cx, |s| {
16415            s.select_ranges([Point::new(1, 0)..Point::new(1, 0)])
16416        });
16417    });
16418
16419    assert_indent_guides(
16420        0..4,
16421        vec![
16422            indent_guide(buffer_id, 1, 3, 0),
16423            indent_guide(buffer_id, 2, 2, 1),
16424        ],
16425        Some(vec![1]),
16426        &mut cx,
16427    );
16428
16429    cx.update_editor(|editor, window, cx| {
16430        editor.change_selections(None, window, cx, |s| {
16431            s.select_ranges([Point::new(2, 0)..Point::new(2, 0)])
16432        });
16433    });
16434
16435    assert_indent_guides(
16436        0..4,
16437        vec![
16438            indent_guide(buffer_id, 1, 3, 0),
16439            indent_guide(buffer_id, 2, 2, 1),
16440        ],
16441        Some(vec![1]),
16442        &mut cx,
16443    );
16444
16445    cx.update_editor(|editor, window, cx| {
16446        editor.change_selections(None, window, cx, |s| {
16447            s.select_ranges([Point::new(3, 0)..Point::new(3, 0)])
16448        });
16449    });
16450
16451    assert_indent_guides(
16452        0..4,
16453        vec![
16454            indent_guide(buffer_id, 1, 3, 0),
16455            indent_guide(buffer_id, 2, 2, 1),
16456        ],
16457        Some(vec![0]),
16458        &mut cx,
16459    );
16460}
16461
16462#[gpui::test]
16463async fn test_active_indent_guide_empty_line(cx: &mut TestAppContext) {
16464    let (buffer_id, mut cx) = setup_indent_guides_editor(
16465        &"
16466    fn main() {
16467        let a = 1;
16468
16469        let b = 2;
16470    }"
16471        .unindent(),
16472        cx,
16473    )
16474    .await;
16475
16476    cx.update_editor(|editor, window, cx| {
16477        editor.change_selections(None, window, cx, |s| {
16478            s.select_ranges([Point::new(2, 0)..Point::new(2, 0)])
16479        });
16480    });
16481
16482    assert_indent_guides(
16483        0..5,
16484        vec![indent_guide(buffer_id, 1, 3, 0)],
16485        Some(vec![0]),
16486        &mut cx,
16487    );
16488}
16489
16490#[gpui::test]
16491async fn test_active_indent_guide_non_matching_indent(cx: &mut TestAppContext) {
16492    let (buffer_id, mut cx) = setup_indent_guides_editor(
16493        &"
16494    def m:
16495        a = 1
16496        pass"
16497            .unindent(),
16498        cx,
16499    )
16500    .await;
16501
16502    cx.update_editor(|editor, window, cx| {
16503        editor.change_selections(None, window, cx, |s| {
16504            s.select_ranges([Point::new(1, 0)..Point::new(1, 0)])
16505        });
16506    });
16507
16508    assert_indent_guides(
16509        0..3,
16510        vec![indent_guide(buffer_id, 1, 2, 0)],
16511        Some(vec![0]),
16512        &mut cx,
16513    );
16514}
16515
16516#[gpui::test]
16517async fn test_indent_guide_with_expanded_diff_hunks(cx: &mut TestAppContext) {
16518    init_test(cx, |_| {});
16519    let mut cx = EditorTestContext::new(cx).await;
16520    let text = indoc! {
16521        "
16522        impl A {
16523            fn b() {
16524                0;
16525                3;
16526                5;
16527                6;
16528                7;
16529            }
16530        }
16531        "
16532    };
16533    let base_text = indoc! {
16534        "
16535        impl A {
16536            fn b() {
16537                0;
16538                1;
16539                2;
16540                3;
16541                4;
16542            }
16543            fn c() {
16544                5;
16545                6;
16546                7;
16547            }
16548        }
16549        "
16550    };
16551
16552    cx.update_editor(|editor, window, cx| {
16553        editor.set_text(text, window, cx);
16554
16555        editor.buffer().update(cx, |multibuffer, cx| {
16556            let buffer = multibuffer.as_singleton().unwrap();
16557            let diff = cx.new(|cx| BufferDiff::new_with_base_text(base_text, &buffer, cx));
16558
16559            multibuffer.set_all_diff_hunks_expanded(cx);
16560            multibuffer.add_diff(diff, cx);
16561
16562            buffer.read(cx).remote_id()
16563        })
16564    });
16565    cx.run_until_parked();
16566
16567    cx.assert_state_with_diff(
16568        indoc! { "
16569          impl A {
16570              fn b() {
16571                  0;
16572        -         1;
16573        -         2;
16574                  3;
16575        -         4;
16576        -     }
16577        -     fn c() {
16578                  5;
16579                  6;
16580                  7;
16581              }
16582          }
16583          ˇ"
16584        }
16585        .to_string(),
16586    );
16587
16588    let mut actual_guides = cx.update_editor(|editor, window, cx| {
16589        editor
16590            .snapshot(window, cx)
16591            .buffer_snapshot
16592            .indent_guides_in_range(Anchor::min()..Anchor::max(), false, cx)
16593            .map(|guide| (guide.start_row..=guide.end_row, guide.depth))
16594            .collect::<Vec<_>>()
16595    });
16596    actual_guides.sort_by_key(|item| (*item.0.start(), item.1));
16597    assert_eq!(
16598        actual_guides,
16599        vec![
16600            (MultiBufferRow(1)..=MultiBufferRow(12), 0),
16601            (MultiBufferRow(2)..=MultiBufferRow(6), 1),
16602            (MultiBufferRow(9)..=MultiBufferRow(11), 1),
16603        ]
16604    );
16605}
16606
16607#[gpui::test]
16608async fn test_adjacent_diff_hunks(executor: BackgroundExecutor, cx: &mut TestAppContext) {
16609    init_test(cx, |_| {});
16610    let mut cx = EditorTestContext::new(cx).await;
16611
16612    let diff_base = r#"
16613        a
16614        b
16615        c
16616        "#
16617    .unindent();
16618
16619    cx.set_state(
16620        &r#"
16621        ˇA
16622        b
16623        C
16624        "#
16625        .unindent(),
16626    );
16627    cx.set_head_text(&diff_base);
16628    cx.update_editor(|editor, window, cx| {
16629        editor.expand_all_diff_hunks(&ExpandAllDiffHunks, window, cx);
16630    });
16631    executor.run_until_parked();
16632
16633    let both_hunks_expanded = r#"
16634        - a
16635        + ˇA
16636          b
16637        - c
16638        + C
16639        "#
16640    .unindent();
16641
16642    cx.assert_state_with_diff(both_hunks_expanded.clone());
16643
16644    let hunk_ranges = cx.update_editor(|editor, window, cx| {
16645        let snapshot = editor.snapshot(window, cx);
16646        let hunks = editor
16647            .diff_hunks_in_ranges(&[Anchor::min()..Anchor::max()], &snapshot.buffer_snapshot)
16648            .collect::<Vec<_>>();
16649        let excerpt_id = editor.buffer.read(cx).excerpt_ids()[0];
16650        let buffer_id = hunks[0].buffer_id;
16651        hunks
16652            .into_iter()
16653            .map(|hunk| Anchor::range_in_buffer(excerpt_id, buffer_id, hunk.buffer_range.clone()))
16654            .collect::<Vec<_>>()
16655    });
16656    assert_eq!(hunk_ranges.len(), 2);
16657
16658    cx.update_editor(|editor, _, cx| {
16659        editor.toggle_single_diff_hunk(hunk_ranges[0].clone(), cx);
16660    });
16661    executor.run_until_parked();
16662
16663    let second_hunk_expanded = r#"
16664          ˇA
16665          b
16666        - c
16667        + C
16668        "#
16669    .unindent();
16670
16671    cx.assert_state_with_diff(second_hunk_expanded);
16672
16673    cx.update_editor(|editor, _, cx| {
16674        editor.toggle_single_diff_hunk(hunk_ranges[0].clone(), cx);
16675    });
16676    executor.run_until_parked();
16677
16678    cx.assert_state_with_diff(both_hunks_expanded.clone());
16679
16680    cx.update_editor(|editor, _, cx| {
16681        editor.toggle_single_diff_hunk(hunk_ranges[1].clone(), cx);
16682    });
16683    executor.run_until_parked();
16684
16685    let first_hunk_expanded = r#"
16686        - a
16687        + ˇA
16688          b
16689          C
16690        "#
16691    .unindent();
16692
16693    cx.assert_state_with_diff(first_hunk_expanded);
16694
16695    cx.update_editor(|editor, _, cx| {
16696        editor.toggle_single_diff_hunk(hunk_ranges[1].clone(), cx);
16697    });
16698    executor.run_until_parked();
16699
16700    cx.assert_state_with_diff(both_hunks_expanded);
16701
16702    cx.set_state(
16703        &r#"
16704        ˇA
16705        b
16706        "#
16707        .unindent(),
16708    );
16709    cx.run_until_parked();
16710
16711    // TODO this cursor position seems bad
16712    cx.assert_state_with_diff(
16713        r#"
16714        - ˇa
16715        + A
16716          b
16717        "#
16718        .unindent(),
16719    );
16720
16721    cx.update_editor(|editor, window, cx| {
16722        editor.expand_all_diff_hunks(&ExpandAllDiffHunks, window, cx);
16723    });
16724
16725    cx.assert_state_with_diff(
16726        r#"
16727            - ˇa
16728            + A
16729              b
16730            - c
16731            "#
16732        .unindent(),
16733    );
16734
16735    let hunk_ranges = cx.update_editor(|editor, window, cx| {
16736        let snapshot = editor.snapshot(window, cx);
16737        let hunks = editor
16738            .diff_hunks_in_ranges(&[Anchor::min()..Anchor::max()], &snapshot.buffer_snapshot)
16739            .collect::<Vec<_>>();
16740        let excerpt_id = editor.buffer.read(cx).excerpt_ids()[0];
16741        let buffer_id = hunks[0].buffer_id;
16742        hunks
16743            .into_iter()
16744            .map(|hunk| Anchor::range_in_buffer(excerpt_id, buffer_id, hunk.buffer_range.clone()))
16745            .collect::<Vec<_>>()
16746    });
16747    assert_eq!(hunk_ranges.len(), 2);
16748
16749    cx.update_editor(|editor, _, cx| {
16750        editor.toggle_single_diff_hunk(hunk_ranges[1].clone(), cx);
16751    });
16752    executor.run_until_parked();
16753
16754    cx.assert_state_with_diff(
16755        r#"
16756        - ˇa
16757        + A
16758          b
16759        "#
16760        .unindent(),
16761    );
16762}
16763
16764#[gpui::test]
16765async fn test_toggle_deletion_hunk_at_start_of_file(
16766    executor: BackgroundExecutor,
16767    cx: &mut TestAppContext,
16768) {
16769    init_test(cx, |_| {});
16770    let mut cx = EditorTestContext::new(cx).await;
16771
16772    let diff_base = r#"
16773        a
16774        b
16775        c
16776        "#
16777    .unindent();
16778
16779    cx.set_state(
16780        &r#"
16781        ˇb
16782        c
16783        "#
16784        .unindent(),
16785    );
16786    cx.set_head_text(&diff_base);
16787    cx.update_editor(|editor, window, cx| {
16788        editor.expand_all_diff_hunks(&ExpandAllDiffHunks, window, cx);
16789    });
16790    executor.run_until_parked();
16791
16792    let hunk_expanded = r#"
16793        - a
16794          ˇb
16795          c
16796        "#
16797    .unindent();
16798
16799    cx.assert_state_with_diff(hunk_expanded.clone());
16800
16801    let hunk_ranges = cx.update_editor(|editor, window, cx| {
16802        let snapshot = editor.snapshot(window, cx);
16803        let hunks = editor
16804            .diff_hunks_in_ranges(&[Anchor::min()..Anchor::max()], &snapshot.buffer_snapshot)
16805            .collect::<Vec<_>>();
16806        let excerpt_id = editor.buffer.read(cx).excerpt_ids()[0];
16807        let buffer_id = hunks[0].buffer_id;
16808        hunks
16809            .into_iter()
16810            .map(|hunk| Anchor::range_in_buffer(excerpt_id, buffer_id, hunk.buffer_range.clone()))
16811            .collect::<Vec<_>>()
16812    });
16813    assert_eq!(hunk_ranges.len(), 1);
16814
16815    cx.update_editor(|editor, _, cx| {
16816        editor.toggle_single_diff_hunk(hunk_ranges[0].clone(), cx);
16817    });
16818    executor.run_until_parked();
16819
16820    let hunk_collapsed = r#"
16821          ˇb
16822          c
16823        "#
16824    .unindent();
16825
16826    cx.assert_state_with_diff(hunk_collapsed);
16827
16828    cx.update_editor(|editor, _, cx| {
16829        editor.toggle_single_diff_hunk(hunk_ranges[0].clone(), cx);
16830    });
16831    executor.run_until_parked();
16832
16833    cx.assert_state_with_diff(hunk_expanded.clone());
16834}
16835
16836#[gpui::test]
16837async fn test_display_diff_hunks(cx: &mut TestAppContext) {
16838    init_test(cx, |_| {});
16839
16840    let fs = FakeFs::new(cx.executor());
16841    fs.insert_tree(
16842        path!("/test"),
16843        json!({
16844            ".git": {},
16845            "file-1": "ONE\n",
16846            "file-2": "TWO\n",
16847            "file-3": "THREE\n",
16848        }),
16849    )
16850    .await;
16851
16852    fs.set_head_for_repo(
16853        path!("/test/.git").as_ref(),
16854        &[
16855            ("file-1".into(), "one\n".into()),
16856            ("file-2".into(), "two\n".into()),
16857            ("file-3".into(), "three\n".into()),
16858        ],
16859    );
16860
16861    let project = Project::test(fs, [path!("/test").as_ref()], cx).await;
16862    let mut buffers = vec![];
16863    for i in 1..=3 {
16864        let buffer = project
16865            .update(cx, |project, cx| {
16866                let path = format!(path!("/test/file-{}"), i);
16867                project.open_local_buffer(path, cx)
16868            })
16869            .await
16870            .unwrap();
16871        buffers.push(buffer);
16872    }
16873
16874    let multibuffer = cx.new(|cx| {
16875        let mut multibuffer = MultiBuffer::new(Capability::ReadWrite);
16876        multibuffer.set_all_diff_hunks_expanded(cx);
16877        for buffer in &buffers {
16878            let snapshot = buffer.read(cx).snapshot();
16879            multibuffer.set_excerpts_for_path(
16880                PathKey::namespaced(0, buffer.read(cx).file().unwrap().path().clone()),
16881                buffer.clone(),
16882                vec![text::Anchor::MIN.to_point(&snapshot)..text::Anchor::MAX.to_point(&snapshot)],
16883                DEFAULT_MULTIBUFFER_CONTEXT,
16884                cx,
16885            );
16886        }
16887        multibuffer
16888    });
16889
16890    let editor = cx.add_window(|window, cx| {
16891        Editor::new(EditorMode::full(), multibuffer, Some(project), window, cx)
16892    });
16893    cx.run_until_parked();
16894
16895    let snapshot = editor
16896        .update(cx, |editor, window, cx| editor.snapshot(window, cx))
16897        .unwrap();
16898    let hunks = snapshot
16899        .display_diff_hunks_for_rows(DisplayRow(0)..DisplayRow(u32::MAX), &Default::default())
16900        .map(|hunk| match hunk {
16901            DisplayDiffHunk::Unfolded {
16902                display_row_range, ..
16903            } => display_row_range,
16904            DisplayDiffHunk::Folded { .. } => unreachable!(),
16905        })
16906        .collect::<Vec<_>>();
16907    assert_eq!(
16908        hunks,
16909        [
16910            DisplayRow(2)..DisplayRow(4),
16911            DisplayRow(7)..DisplayRow(9),
16912            DisplayRow(12)..DisplayRow(14),
16913        ]
16914    );
16915}
16916
16917#[gpui::test]
16918async fn test_partially_staged_hunk(cx: &mut TestAppContext) {
16919    init_test(cx, |_| {});
16920
16921    let mut cx = EditorTestContext::new(cx).await;
16922    cx.set_head_text(indoc! { "
16923        one
16924        two
16925        three
16926        four
16927        five
16928        "
16929    });
16930    cx.set_index_text(indoc! { "
16931        one
16932        two
16933        three
16934        four
16935        five
16936        "
16937    });
16938    cx.set_state(indoc! {"
16939        one
16940        TWO
16941        ˇTHREE
16942        FOUR
16943        five
16944    "});
16945    cx.run_until_parked();
16946    cx.update_editor(|editor, window, cx| {
16947        editor.toggle_staged_selected_diff_hunks(&Default::default(), window, cx);
16948    });
16949    cx.run_until_parked();
16950    cx.assert_index_text(Some(indoc! {"
16951        one
16952        TWO
16953        THREE
16954        FOUR
16955        five
16956    "}));
16957    cx.set_state(indoc! { "
16958        one
16959        TWO
16960        ˇTHREE-HUNDRED
16961        FOUR
16962        five
16963    "});
16964    cx.run_until_parked();
16965    cx.update_editor(|editor, window, cx| {
16966        let snapshot = editor.snapshot(window, cx);
16967        let hunks = editor
16968            .diff_hunks_in_ranges(&[Anchor::min()..Anchor::max()], &snapshot.buffer_snapshot)
16969            .collect::<Vec<_>>();
16970        assert_eq!(hunks.len(), 1);
16971        assert_eq!(
16972            hunks[0].status(),
16973            DiffHunkStatus {
16974                kind: DiffHunkStatusKind::Modified,
16975                secondary: DiffHunkSecondaryStatus::OverlapsWithSecondaryHunk
16976            }
16977        );
16978
16979        editor.toggle_staged_selected_diff_hunks(&Default::default(), window, cx);
16980    });
16981    cx.run_until_parked();
16982    cx.assert_index_text(Some(indoc! {"
16983        one
16984        TWO
16985        THREE-HUNDRED
16986        FOUR
16987        five
16988    "}));
16989}
16990
16991#[gpui::test]
16992fn test_crease_insertion_and_rendering(cx: &mut TestAppContext) {
16993    init_test(cx, |_| {});
16994
16995    let editor = cx.add_window(|window, cx| {
16996        let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\nddddddd\n", cx);
16997        build_editor(buffer, window, cx)
16998    });
16999
17000    let render_args = Arc::new(Mutex::new(None));
17001    let snapshot = editor
17002        .update(cx, |editor, window, cx| {
17003            let snapshot = editor.buffer().read(cx).snapshot(cx);
17004            let range =
17005                snapshot.anchor_before(Point::new(1, 0))..snapshot.anchor_after(Point::new(2, 6));
17006
17007            struct RenderArgs {
17008                row: MultiBufferRow,
17009                folded: bool,
17010                callback: Arc<dyn Fn(bool, &mut Window, &mut App) + Send + Sync>,
17011            }
17012
17013            let crease = Crease::inline(
17014                range,
17015                FoldPlaceholder::test(),
17016                {
17017                    let toggle_callback = render_args.clone();
17018                    move |row, folded, callback, _window, _cx| {
17019                        *toggle_callback.lock() = Some(RenderArgs {
17020                            row,
17021                            folded,
17022                            callback,
17023                        });
17024                        div()
17025                    }
17026                },
17027                |_row, _folded, _window, _cx| div(),
17028            );
17029
17030            editor.insert_creases(Some(crease), cx);
17031            let snapshot = editor.snapshot(window, cx);
17032            let _div = snapshot.render_crease_toggle(
17033                MultiBufferRow(1),
17034                false,
17035                cx.entity().clone(),
17036                window,
17037                cx,
17038            );
17039            snapshot
17040        })
17041        .unwrap();
17042
17043    let render_args = render_args.lock().take().unwrap();
17044    assert_eq!(render_args.row, MultiBufferRow(1));
17045    assert!(!render_args.folded);
17046    assert!(!snapshot.is_line_folded(MultiBufferRow(1)));
17047
17048    cx.update_window(*editor, |_, window, cx| {
17049        (render_args.callback)(true, window, cx)
17050    })
17051    .unwrap();
17052    let snapshot = editor
17053        .update(cx, |editor, window, cx| editor.snapshot(window, cx))
17054        .unwrap();
17055    assert!(snapshot.is_line_folded(MultiBufferRow(1)));
17056
17057    cx.update_window(*editor, |_, window, cx| {
17058        (render_args.callback)(false, window, cx)
17059    })
17060    .unwrap();
17061    let snapshot = editor
17062        .update(cx, |editor, window, cx| editor.snapshot(window, cx))
17063        .unwrap();
17064    assert!(!snapshot.is_line_folded(MultiBufferRow(1)));
17065}
17066
17067#[gpui::test]
17068async fn test_input_text(cx: &mut TestAppContext) {
17069    init_test(cx, |_| {});
17070    let mut cx = EditorTestContext::new(cx).await;
17071
17072    cx.set_state(
17073        &r#"ˇone
17074        two
17075
17076        three
17077        fourˇ
17078        five
17079
17080        siˇx"#
17081            .unindent(),
17082    );
17083
17084    cx.dispatch_action(HandleInput(String::new()));
17085    cx.assert_editor_state(
17086        &r#"ˇone
17087        two
17088
17089        three
17090        fourˇ
17091        five
17092
17093        siˇx"#
17094            .unindent(),
17095    );
17096
17097    cx.dispatch_action(HandleInput("AAAA".to_string()));
17098    cx.assert_editor_state(
17099        &r#"AAAAˇone
17100        two
17101
17102        three
17103        fourAAAAˇ
17104        five
17105
17106        siAAAAˇx"#
17107            .unindent(),
17108    );
17109}
17110
17111#[gpui::test]
17112async fn test_scroll_cursor_center_top_bottom(cx: &mut TestAppContext) {
17113    init_test(cx, |_| {});
17114
17115    let mut cx = EditorTestContext::new(cx).await;
17116    cx.set_state(
17117        r#"let foo = 1;
17118let foo = 2;
17119let foo = 3;
17120let fooˇ = 4;
17121let foo = 5;
17122let foo = 6;
17123let foo = 7;
17124let foo = 8;
17125let foo = 9;
17126let foo = 10;
17127let foo = 11;
17128let foo = 12;
17129let foo = 13;
17130let foo = 14;
17131let foo = 15;"#,
17132    );
17133
17134    cx.update_editor(|e, window, cx| {
17135        assert_eq!(
17136            e.next_scroll_position,
17137            NextScrollCursorCenterTopBottom::Center,
17138            "Default next scroll direction is center",
17139        );
17140
17141        e.scroll_cursor_center_top_bottom(&ScrollCursorCenterTopBottom, window, cx);
17142        assert_eq!(
17143            e.next_scroll_position,
17144            NextScrollCursorCenterTopBottom::Top,
17145            "After center, next scroll direction should be top",
17146        );
17147
17148        e.scroll_cursor_center_top_bottom(&ScrollCursorCenterTopBottom, window, cx);
17149        assert_eq!(
17150            e.next_scroll_position,
17151            NextScrollCursorCenterTopBottom::Bottom,
17152            "After top, next scroll direction should be bottom",
17153        );
17154
17155        e.scroll_cursor_center_top_bottom(&ScrollCursorCenterTopBottom, window, cx);
17156        assert_eq!(
17157            e.next_scroll_position,
17158            NextScrollCursorCenterTopBottom::Center,
17159            "After bottom, scrolling should start over",
17160        );
17161
17162        e.scroll_cursor_center_top_bottom(&ScrollCursorCenterTopBottom, window, cx);
17163        assert_eq!(
17164            e.next_scroll_position,
17165            NextScrollCursorCenterTopBottom::Top,
17166            "Scrolling continues if retriggered fast enough"
17167        );
17168    });
17169
17170    cx.executor()
17171        .advance_clock(SCROLL_CENTER_TOP_BOTTOM_DEBOUNCE_TIMEOUT + Duration::from_millis(200));
17172    cx.executor().run_until_parked();
17173    cx.update_editor(|e, _, _| {
17174        assert_eq!(
17175            e.next_scroll_position,
17176            NextScrollCursorCenterTopBottom::Center,
17177            "If scrolling is not triggered fast enough, it should reset"
17178        );
17179    });
17180}
17181
17182#[gpui::test]
17183async fn test_goto_definition_with_find_all_references_fallback(cx: &mut TestAppContext) {
17184    init_test(cx, |_| {});
17185    let mut cx = EditorLspTestContext::new_rust(
17186        lsp::ServerCapabilities {
17187            definition_provider: Some(lsp::OneOf::Left(true)),
17188            references_provider: Some(lsp::OneOf::Left(true)),
17189            ..lsp::ServerCapabilities::default()
17190        },
17191        cx,
17192    )
17193    .await;
17194
17195    let set_up_lsp_handlers = |empty_go_to_definition: bool, cx: &mut EditorLspTestContext| {
17196        let go_to_definition = cx
17197            .lsp
17198            .set_request_handler::<lsp::request::GotoDefinition, _, _>(
17199                move |params, _| async move {
17200                    if empty_go_to_definition {
17201                        Ok(None)
17202                    } else {
17203                        Ok(Some(lsp::GotoDefinitionResponse::Scalar(lsp::Location {
17204                            uri: params.text_document_position_params.text_document.uri,
17205                            range: lsp::Range::new(
17206                                lsp::Position::new(4, 3),
17207                                lsp::Position::new(4, 6),
17208                            ),
17209                        })))
17210                    }
17211                },
17212            );
17213        let references = cx
17214            .lsp
17215            .set_request_handler::<lsp::request::References, _, _>(move |params, _| async move {
17216                Ok(Some(vec![lsp::Location {
17217                    uri: params.text_document_position.text_document.uri,
17218                    range: lsp::Range::new(lsp::Position::new(0, 8), lsp::Position::new(0, 11)),
17219                }]))
17220            });
17221        (go_to_definition, references)
17222    };
17223
17224    cx.set_state(
17225        &r#"fn one() {
17226            let mut a = ˇtwo();
17227        }
17228
17229        fn two() {}"#
17230            .unindent(),
17231    );
17232    set_up_lsp_handlers(false, &mut cx);
17233    let navigated = cx
17234        .update_editor(|editor, window, cx| editor.go_to_definition(&GoToDefinition, window, cx))
17235        .await
17236        .expect("Failed to navigate to definition");
17237    assert_eq!(
17238        navigated,
17239        Navigated::Yes,
17240        "Should have navigated to definition from the GetDefinition response"
17241    );
17242    cx.assert_editor_state(
17243        &r#"fn one() {
17244            let mut a = two();
17245        }
17246
17247        fn «twoˇ»() {}"#
17248            .unindent(),
17249    );
17250
17251    let editors = cx.update_workspace(|workspace, _, cx| {
17252        workspace.items_of_type::<Editor>(cx).collect::<Vec<_>>()
17253    });
17254    cx.update_editor(|_, _, test_editor_cx| {
17255        assert_eq!(
17256            editors.len(),
17257            1,
17258            "Initially, only one, test, editor should be open in the workspace"
17259        );
17260        assert_eq!(
17261            test_editor_cx.entity(),
17262            editors.last().expect("Asserted len is 1").clone()
17263        );
17264    });
17265
17266    set_up_lsp_handlers(true, &mut cx);
17267    let navigated = cx
17268        .update_editor(|editor, window, cx| editor.go_to_definition(&GoToDefinition, window, cx))
17269        .await
17270        .expect("Failed to navigate to lookup references");
17271    assert_eq!(
17272        navigated,
17273        Navigated::Yes,
17274        "Should have navigated to references as a fallback after empty GoToDefinition response"
17275    );
17276    // We should not change the selections in the existing file,
17277    // if opening another milti buffer with the references
17278    cx.assert_editor_state(
17279        &r#"fn one() {
17280            let mut a = two();
17281        }
17282
17283        fn «twoˇ»() {}"#
17284            .unindent(),
17285    );
17286    let editors = cx.update_workspace(|workspace, _, cx| {
17287        workspace.items_of_type::<Editor>(cx).collect::<Vec<_>>()
17288    });
17289    cx.update_editor(|_, _, test_editor_cx| {
17290        assert_eq!(
17291            editors.len(),
17292            2,
17293            "After falling back to references search, we open a new editor with the results"
17294        );
17295        let references_fallback_text = editors
17296            .into_iter()
17297            .find(|new_editor| *new_editor != test_editor_cx.entity())
17298            .expect("Should have one non-test editor now")
17299            .read(test_editor_cx)
17300            .text(test_editor_cx);
17301        assert_eq!(
17302            references_fallback_text, "fn one() {\n    let mut a = two();\n}",
17303            "Should use the range from the references response and not the GoToDefinition one"
17304        );
17305    });
17306}
17307
17308#[gpui::test]
17309async fn test_goto_definition_no_fallback(cx: &mut TestAppContext) {
17310    init_test(cx, |_| {});
17311    cx.update(|cx| {
17312        let mut editor_settings = EditorSettings::get_global(cx).clone();
17313        editor_settings.go_to_definition_fallback = GoToDefinitionFallback::None;
17314        EditorSettings::override_global(editor_settings, cx);
17315    });
17316    let mut cx = EditorLspTestContext::new_rust(
17317        lsp::ServerCapabilities {
17318            definition_provider: Some(lsp::OneOf::Left(true)),
17319            references_provider: Some(lsp::OneOf::Left(true)),
17320            ..lsp::ServerCapabilities::default()
17321        },
17322        cx,
17323    )
17324    .await;
17325    let original_state = r#"fn one() {
17326        let mut a = ˇtwo();
17327    }
17328
17329    fn two() {}"#
17330        .unindent();
17331    cx.set_state(&original_state);
17332
17333    let mut go_to_definition = cx
17334        .lsp
17335        .set_request_handler::<lsp::request::GotoDefinition, _, _>(
17336            move |_, _| async move { Ok(None) },
17337        );
17338    let _references = cx
17339        .lsp
17340        .set_request_handler::<lsp::request::References, _, _>(move |_, _| async move {
17341            panic!("Should not call for references with no go to definition fallback")
17342        });
17343
17344    let navigated = cx
17345        .update_editor(|editor, window, cx| editor.go_to_definition(&GoToDefinition, window, cx))
17346        .await
17347        .expect("Failed to navigate to lookup references");
17348    go_to_definition
17349        .next()
17350        .await
17351        .expect("Should have called the go_to_definition handler");
17352
17353    assert_eq!(
17354        navigated,
17355        Navigated::No,
17356        "Should have navigated to references as a fallback after empty GoToDefinition response"
17357    );
17358    cx.assert_editor_state(&original_state);
17359    let editors = cx.update_workspace(|workspace, _, cx| {
17360        workspace.items_of_type::<Editor>(cx).collect::<Vec<_>>()
17361    });
17362    cx.update_editor(|_, _, _| {
17363        assert_eq!(
17364            editors.len(),
17365            1,
17366            "After unsuccessful fallback, no other editor should have been opened"
17367        );
17368    });
17369}
17370
17371#[gpui::test]
17372async fn test_find_enclosing_node_with_task(cx: &mut TestAppContext) {
17373    init_test(cx, |_| {});
17374
17375    let language = Arc::new(Language::new(
17376        LanguageConfig::default(),
17377        Some(tree_sitter_rust::LANGUAGE.into()),
17378    ));
17379
17380    let text = r#"
17381        #[cfg(test)]
17382        mod tests() {
17383            #[test]
17384            fn runnable_1() {
17385                let a = 1;
17386            }
17387
17388            #[test]
17389            fn runnable_2() {
17390                let a = 1;
17391                let b = 2;
17392            }
17393        }
17394    "#
17395    .unindent();
17396
17397    let fs = FakeFs::new(cx.executor());
17398    fs.insert_file("/file.rs", Default::default()).await;
17399
17400    let project = Project::test(fs, ["/a".as_ref()], cx).await;
17401    let workspace = cx.add_window(|window, cx| Workspace::test_new(project.clone(), window, cx));
17402    let cx = &mut VisualTestContext::from_window(*workspace.deref(), cx);
17403    let buffer = cx.new(|cx| Buffer::local(text, cx).with_language(language, cx));
17404    let multi_buffer = cx.new(|cx| MultiBuffer::singleton(buffer.clone(), cx));
17405
17406    let editor = cx.new_window_entity(|window, cx| {
17407        Editor::new(
17408            EditorMode::full(),
17409            multi_buffer,
17410            Some(project.clone()),
17411            window,
17412            cx,
17413        )
17414    });
17415
17416    editor.update_in(cx, |editor, window, cx| {
17417        let snapshot = editor.buffer().read(cx).snapshot(cx);
17418        editor.tasks.insert(
17419            (buffer.read(cx).remote_id(), 3),
17420            RunnableTasks {
17421                templates: vec![],
17422                offset: snapshot.anchor_before(43),
17423                column: 0,
17424                extra_variables: HashMap::default(),
17425                context_range: BufferOffset(43)..BufferOffset(85),
17426            },
17427        );
17428        editor.tasks.insert(
17429            (buffer.read(cx).remote_id(), 8),
17430            RunnableTasks {
17431                templates: vec![],
17432                offset: snapshot.anchor_before(86),
17433                column: 0,
17434                extra_variables: HashMap::default(),
17435                context_range: BufferOffset(86)..BufferOffset(191),
17436            },
17437        );
17438
17439        // Test finding task when cursor is inside function body
17440        editor.change_selections(None, window, cx, |s| {
17441            s.select_ranges([Point::new(4, 5)..Point::new(4, 5)])
17442        });
17443        let (_, row, _) = editor.find_enclosing_node_task(cx).unwrap();
17444        assert_eq!(row, 3, "Should find task for cursor inside runnable_1");
17445
17446        // Test finding task when cursor is on function name
17447        editor.change_selections(None, window, cx, |s| {
17448            s.select_ranges([Point::new(8, 4)..Point::new(8, 4)])
17449        });
17450        let (_, row, _) = editor.find_enclosing_node_task(cx).unwrap();
17451        assert_eq!(row, 8, "Should find task when cursor is on function name");
17452    });
17453}
17454
17455#[gpui::test]
17456async fn test_folding_buffers(cx: &mut TestAppContext) {
17457    init_test(cx, |_| {});
17458
17459    let sample_text_1 = "aaaa\nbbbb\ncccc\ndddd\neeee\nffff\ngggg\nhhhh\niiii\njjjj".to_string();
17460    let sample_text_2 = "llll\nmmmm\nnnnn\noooo\npppp\nqqqq\nrrrr\nssss\ntttt\nuuuu".to_string();
17461    let sample_text_3 = "vvvv\nwwww\nxxxx\nyyyy\nzzzz\n1111\n2222\n3333\n4444\n5555".to_string();
17462
17463    let fs = FakeFs::new(cx.executor());
17464    fs.insert_tree(
17465        path!("/a"),
17466        json!({
17467            "first.rs": sample_text_1,
17468            "second.rs": sample_text_2,
17469            "third.rs": sample_text_3,
17470        }),
17471    )
17472    .await;
17473    let project = Project::test(fs, [path!("/a").as_ref()], cx).await;
17474    let workspace = cx.add_window(|window, cx| Workspace::test_new(project.clone(), window, cx));
17475    let cx = &mut VisualTestContext::from_window(*workspace.deref(), cx);
17476    let worktree = project.update(cx, |project, cx| {
17477        let mut worktrees = project.worktrees(cx).collect::<Vec<_>>();
17478        assert_eq!(worktrees.len(), 1);
17479        worktrees.pop().unwrap()
17480    });
17481    let worktree_id = worktree.update(cx, |worktree, _| worktree.id());
17482
17483    let buffer_1 = project
17484        .update(cx, |project, cx| {
17485            project.open_buffer((worktree_id, "first.rs"), cx)
17486        })
17487        .await
17488        .unwrap();
17489    let buffer_2 = project
17490        .update(cx, |project, cx| {
17491            project.open_buffer((worktree_id, "second.rs"), cx)
17492        })
17493        .await
17494        .unwrap();
17495    let buffer_3 = project
17496        .update(cx, |project, cx| {
17497            project.open_buffer((worktree_id, "third.rs"), cx)
17498        })
17499        .await
17500        .unwrap();
17501
17502    let multi_buffer = cx.new(|cx| {
17503        let mut multi_buffer = MultiBuffer::new(ReadWrite);
17504        multi_buffer.push_excerpts(
17505            buffer_1.clone(),
17506            [
17507                ExcerptRange::new(Point::new(0, 0)..Point::new(3, 0)),
17508                ExcerptRange::new(Point::new(5, 0)..Point::new(7, 0)),
17509                ExcerptRange::new(Point::new(9, 0)..Point::new(10, 4)),
17510            ],
17511            cx,
17512        );
17513        multi_buffer.push_excerpts(
17514            buffer_2.clone(),
17515            [
17516                ExcerptRange::new(Point::new(0, 0)..Point::new(3, 0)),
17517                ExcerptRange::new(Point::new(5, 0)..Point::new(7, 0)),
17518                ExcerptRange::new(Point::new(9, 0)..Point::new(10, 4)),
17519            ],
17520            cx,
17521        );
17522        multi_buffer.push_excerpts(
17523            buffer_3.clone(),
17524            [
17525                ExcerptRange::new(Point::new(0, 0)..Point::new(3, 0)),
17526                ExcerptRange::new(Point::new(5, 0)..Point::new(7, 0)),
17527                ExcerptRange::new(Point::new(9, 0)..Point::new(10, 4)),
17528            ],
17529            cx,
17530        );
17531        multi_buffer
17532    });
17533    let multi_buffer_editor = cx.new_window_entity(|window, cx| {
17534        Editor::new(
17535            EditorMode::full(),
17536            multi_buffer.clone(),
17537            Some(project.clone()),
17538            window,
17539            cx,
17540        )
17541    });
17542
17543    assert_eq!(
17544        multi_buffer_editor.update(cx, |editor, cx| editor.display_text(cx)),
17545        "\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",
17546    );
17547
17548    multi_buffer_editor.update(cx, |editor, cx| {
17549        editor.fold_buffer(buffer_1.read(cx).remote_id(), cx)
17550    });
17551    assert_eq!(
17552        multi_buffer_editor.update(cx, |editor, cx| editor.display_text(cx)),
17553        "\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",
17554        "After folding the first buffer, its text should not be displayed"
17555    );
17556
17557    multi_buffer_editor.update(cx, |editor, cx| {
17558        editor.fold_buffer(buffer_2.read(cx).remote_id(), cx)
17559    });
17560    assert_eq!(
17561        multi_buffer_editor.update(cx, |editor, cx| editor.display_text(cx)),
17562        "\n\n\n\n\n\nvvvv\nwwww\nxxxx\n\n\n1111\n2222\n\n\n5555",
17563        "After folding the second buffer, its text should not be displayed"
17564    );
17565
17566    multi_buffer_editor.update(cx, |editor, cx| {
17567        editor.fold_buffer(buffer_3.read(cx).remote_id(), cx)
17568    });
17569    assert_eq!(
17570        multi_buffer_editor.update(cx, |editor, cx| editor.display_text(cx)),
17571        "\n\n\n\n\n",
17572        "After folding the third buffer, its text should not be displayed"
17573    );
17574
17575    // Emulate selection inside the fold logic, that should work
17576    multi_buffer_editor.update_in(cx, |editor, window, cx| {
17577        editor
17578            .snapshot(window, cx)
17579            .next_line_boundary(Point::new(0, 4));
17580    });
17581
17582    multi_buffer_editor.update(cx, |editor, cx| {
17583        editor.unfold_buffer(buffer_2.read(cx).remote_id(), cx)
17584    });
17585    assert_eq!(
17586        multi_buffer_editor.update(cx, |editor, cx| editor.display_text(cx)),
17587        "\n\n\n\nllll\nmmmm\nnnnn\n\n\nqqqq\nrrrr\n\n\nuuuu\n\n",
17588        "After unfolding the second buffer, its text should be displayed"
17589    );
17590
17591    // Typing inside of buffer 1 causes that buffer to be unfolded.
17592    multi_buffer_editor.update_in(cx, |editor, window, cx| {
17593        assert_eq!(
17594            multi_buffer
17595                .read(cx)
17596                .snapshot(cx)
17597                .text_for_range(Point::new(1, 0)..Point::new(1, 4))
17598                .collect::<String>(),
17599            "bbbb"
17600        );
17601        editor.change_selections(None, window, cx, |selections| {
17602            selections.select_ranges(vec![Point::new(1, 0)..Point::new(1, 0)]);
17603        });
17604        editor.handle_input("B", window, cx);
17605    });
17606
17607    assert_eq!(
17608        multi_buffer_editor.update(cx, |editor, cx| editor.display_text(cx)),
17609        "\n\nB\n\n\n\n\n\n\nllll\nmmmm\nnnnn\n\n\nqqqq\nrrrr\n\n\nuuuu\n\n",
17610        "After unfolding the first buffer, its and 2nd buffer's text should be displayed"
17611    );
17612
17613    multi_buffer_editor.update(cx, |editor, cx| {
17614        editor.unfold_buffer(buffer_3.read(cx).remote_id(), cx)
17615    });
17616    assert_eq!(
17617        multi_buffer_editor.update(cx, |editor, cx| editor.display_text(cx)),
17618        "\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",
17619        "After unfolding the all buffers, all original text should be displayed"
17620    );
17621}
17622
17623#[gpui::test]
17624async fn test_folding_buffers_with_one_excerpt(cx: &mut TestAppContext) {
17625    init_test(cx, |_| {});
17626
17627    let sample_text_1 = "1111\n2222\n3333".to_string();
17628    let sample_text_2 = "4444\n5555\n6666".to_string();
17629    let sample_text_3 = "7777\n8888\n9999".to_string();
17630
17631    let fs = FakeFs::new(cx.executor());
17632    fs.insert_tree(
17633        path!("/a"),
17634        json!({
17635            "first.rs": sample_text_1,
17636            "second.rs": sample_text_2,
17637            "third.rs": sample_text_3,
17638        }),
17639    )
17640    .await;
17641    let project = Project::test(fs, [path!("/a").as_ref()], cx).await;
17642    let workspace = cx.add_window(|window, cx| Workspace::test_new(project.clone(), window, cx));
17643    let cx = &mut VisualTestContext::from_window(*workspace.deref(), cx);
17644    let worktree = project.update(cx, |project, cx| {
17645        let mut worktrees = project.worktrees(cx).collect::<Vec<_>>();
17646        assert_eq!(worktrees.len(), 1);
17647        worktrees.pop().unwrap()
17648    });
17649    let worktree_id = worktree.update(cx, |worktree, _| worktree.id());
17650
17651    let buffer_1 = project
17652        .update(cx, |project, cx| {
17653            project.open_buffer((worktree_id, "first.rs"), cx)
17654        })
17655        .await
17656        .unwrap();
17657    let buffer_2 = project
17658        .update(cx, |project, cx| {
17659            project.open_buffer((worktree_id, "second.rs"), cx)
17660        })
17661        .await
17662        .unwrap();
17663    let buffer_3 = project
17664        .update(cx, |project, cx| {
17665            project.open_buffer((worktree_id, "third.rs"), cx)
17666        })
17667        .await
17668        .unwrap();
17669
17670    let multi_buffer = cx.new(|cx| {
17671        let mut multi_buffer = MultiBuffer::new(ReadWrite);
17672        multi_buffer.push_excerpts(
17673            buffer_1.clone(),
17674            [ExcerptRange::new(Point::new(0, 0)..Point::new(3, 0))],
17675            cx,
17676        );
17677        multi_buffer.push_excerpts(
17678            buffer_2.clone(),
17679            [ExcerptRange::new(Point::new(0, 0)..Point::new(3, 0))],
17680            cx,
17681        );
17682        multi_buffer.push_excerpts(
17683            buffer_3.clone(),
17684            [ExcerptRange::new(Point::new(0, 0)..Point::new(3, 0))],
17685            cx,
17686        );
17687        multi_buffer
17688    });
17689
17690    let multi_buffer_editor = cx.new_window_entity(|window, cx| {
17691        Editor::new(
17692            EditorMode::full(),
17693            multi_buffer,
17694            Some(project.clone()),
17695            window,
17696            cx,
17697        )
17698    });
17699
17700    let full_text = "\n\n1111\n2222\n3333\n\n\n4444\n5555\n6666\n\n\n7777\n8888\n9999";
17701    assert_eq!(
17702        multi_buffer_editor.update(cx, |editor, cx| editor.display_text(cx)),
17703        full_text,
17704    );
17705
17706    multi_buffer_editor.update(cx, |editor, cx| {
17707        editor.fold_buffer(buffer_1.read(cx).remote_id(), cx)
17708    });
17709    assert_eq!(
17710        multi_buffer_editor.update(cx, |editor, cx| editor.display_text(cx)),
17711        "\n\n\n\n4444\n5555\n6666\n\n\n7777\n8888\n9999",
17712        "After folding the first buffer, its text should not be displayed"
17713    );
17714
17715    multi_buffer_editor.update(cx, |editor, cx| {
17716        editor.fold_buffer(buffer_2.read(cx).remote_id(), cx)
17717    });
17718
17719    assert_eq!(
17720        multi_buffer_editor.update(cx, |editor, cx| editor.display_text(cx)),
17721        "\n\n\n\n\n\n7777\n8888\n9999",
17722        "After folding the second buffer, its text should not be displayed"
17723    );
17724
17725    multi_buffer_editor.update(cx, |editor, cx| {
17726        editor.fold_buffer(buffer_3.read(cx).remote_id(), cx)
17727    });
17728    assert_eq!(
17729        multi_buffer_editor.update(cx, |editor, cx| editor.display_text(cx)),
17730        "\n\n\n\n\n",
17731        "After folding the third buffer, its text should not be displayed"
17732    );
17733
17734    multi_buffer_editor.update(cx, |editor, cx| {
17735        editor.unfold_buffer(buffer_2.read(cx).remote_id(), cx)
17736    });
17737    assert_eq!(
17738        multi_buffer_editor.update(cx, |editor, cx| editor.display_text(cx)),
17739        "\n\n\n\n4444\n5555\n6666\n\n",
17740        "After unfolding the second buffer, its text should be displayed"
17741    );
17742
17743    multi_buffer_editor.update(cx, |editor, cx| {
17744        editor.unfold_buffer(buffer_1.read(cx).remote_id(), cx)
17745    });
17746    assert_eq!(
17747        multi_buffer_editor.update(cx, |editor, cx| editor.display_text(cx)),
17748        "\n\n1111\n2222\n3333\n\n\n4444\n5555\n6666\n\n",
17749        "After unfolding the first buffer, its text should be displayed"
17750    );
17751
17752    multi_buffer_editor.update(cx, |editor, cx| {
17753        editor.unfold_buffer(buffer_3.read(cx).remote_id(), cx)
17754    });
17755    assert_eq!(
17756        multi_buffer_editor.update(cx, |editor, cx| editor.display_text(cx)),
17757        full_text,
17758        "After unfolding all buffers, all original text should be displayed"
17759    );
17760}
17761
17762#[gpui::test]
17763async fn test_folding_buffer_when_multibuffer_has_only_one_excerpt(cx: &mut TestAppContext) {
17764    init_test(cx, |_| {});
17765
17766    let sample_text = "aaaa\nbbbb\ncccc\ndddd\neeee\nffff\ngggg\nhhhh\niiii\njjjj".to_string();
17767
17768    let fs = FakeFs::new(cx.executor());
17769    fs.insert_tree(
17770        path!("/a"),
17771        json!({
17772            "main.rs": sample_text,
17773        }),
17774    )
17775    .await;
17776    let project = Project::test(fs, [path!("/a").as_ref()], cx).await;
17777    let workspace = cx.add_window(|window, cx| Workspace::test_new(project.clone(), window, cx));
17778    let cx = &mut VisualTestContext::from_window(*workspace.deref(), cx);
17779    let worktree = project.update(cx, |project, cx| {
17780        let mut worktrees = project.worktrees(cx).collect::<Vec<_>>();
17781        assert_eq!(worktrees.len(), 1);
17782        worktrees.pop().unwrap()
17783    });
17784    let worktree_id = worktree.update(cx, |worktree, _| worktree.id());
17785
17786    let buffer_1 = project
17787        .update(cx, |project, cx| {
17788            project.open_buffer((worktree_id, "main.rs"), cx)
17789        })
17790        .await
17791        .unwrap();
17792
17793    let multi_buffer = cx.new(|cx| {
17794        let mut multi_buffer = MultiBuffer::new(ReadWrite);
17795        multi_buffer.push_excerpts(
17796            buffer_1.clone(),
17797            [ExcerptRange::new(
17798                Point::new(0, 0)
17799                    ..Point::new(
17800                        sample_text.chars().filter(|&c| c == '\n').count() as u32 + 1,
17801                        0,
17802                    ),
17803            )],
17804            cx,
17805        );
17806        multi_buffer
17807    });
17808    let multi_buffer_editor = cx.new_window_entity(|window, cx| {
17809        Editor::new(
17810            EditorMode::full(),
17811            multi_buffer,
17812            Some(project.clone()),
17813            window,
17814            cx,
17815        )
17816    });
17817
17818    let selection_range = Point::new(1, 0)..Point::new(2, 0);
17819    multi_buffer_editor.update_in(cx, |editor, window, cx| {
17820        enum TestHighlight {}
17821        let multi_buffer_snapshot = editor.buffer().read(cx).snapshot(cx);
17822        let highlight_range = selection_range.clone().to_anchors(&multi_buffer_snapshot);
17823        editor.highlight_text::<TestHighlight>(
17824            vec![highlight_range.clone()],
17825            HighlightStyle::color(Hsla::green()),
17826            cx,
17827        );
17828        editor.change_selections(None, window, cx, |s| s.select_ranges(Some(highlight_range)));
17829    });
17830
17831    let full_text = format!("\n\n{sample_text}");
17832    assert_eq!(
17833        multi_buffer_editor.update(cx, |editor, cx| editor.display_text(cx)),
17834        full_text,
17835    );
17836}
17837
17838#[gpui::test]
17839async fn test_multi_buffer_navigation_with_folded_buffers(cx: &mut TestAppContext) {
17840    init_test(cx, |_| {});
17841    cx.update(|cx| {
17842        let default_key_bindings = settings::KeymapFile::load_asset_allow_partial_failure(
17843            "keymaps/default-linux.json",
17844            cx,
17845        )
17846        .unwrap();
17847        cx.bind_keys(default_key_bindings);
17848    });
17849
17850    let (editor, cx) = cx.add_window_view(|window, cx| {
17851        let multi_buffer = MultiBuffer::build_multi(
17852            [
17853                ("a0\nb0\nc0\nd0\ne0\n", vec![Point::row_range(0..2)]),
17854                ("a1\nb1\nc1\nd1\ne1\n", vec![Point::row_range(0..2)]),
17855                ("a2\nb2\nc2\nd2\ne2\n", vec![Point::row_range(0..2)]),
17856                ("a3\nb3\nc3\nd3\ne3\n", vec![Point::row_range(0..2)]),
17857            ],
17858            cx,
17859        );
17860        let mut editor = Editor::new(EditorMode::full(), multi_buffer.clone(), None, window, cx);
17861
17862        let buffer_ids = multi_buffer.read(cx).excerpt_buffer_ids();
17863        // fold all but the second buffer, so that we test navigating between two
17864        // adjacent folded buffers, as well as folded buffers at the start and
17865        // end the multibuffer
17866        editor.fold_buffer(buffer_ids[0], cx);
17867        editor.fold_buffer(buffer_ids[2], cx);
17868        editor.fold_buffer(buffer_ids[3], cx);
17869
17870        editor
17871    });
17872    cx.simulate_resize(size(px(1000.), px(1000.)));
17873
17874    let mut cx = EditorTestContext::for_editor_in(editor.clone(), cx).await;
17875    cx.assert_excerpts_with_selections(indoc! {"
17876        [EXCERPT]
17877        ˇ[FOLDED]
17878        [EXCERPT]
17879        a1
17880        b1
17881        [EXCERPT]
17882        [FOLDED]
17883        [EXCERPT]
17884        [FOLDED]
17885        "
17886    });
17887    cx.simulate_keystroke("down");
17888    cx.assert_excerpts_with_selections(indoc! {"
17889        [EXCERPT]
17890        [FOLDED]
17891        [EXCERPT]
17892        ˇa1
17893        b1
17894        [EXCERPT]
17895        [FOLDED]
17896        [EXCERPT]
17897        [FOLDED]
17898        "
17899    });
17900    cx.simulate_keystroke("down");
17901    cx.assert_excerpts_with_selections(indoc! {"
17902        [EXCERPT]
17903        [FOLDED]
17904        [EXCERPT]
17905        a1
17906        ˇb1
17907        [EXCERPT]
17908        [FOLDED]
17909        [EXCERPT]
17910        [FOLDED]
17911        "
17912    });
17913    cx.simulate_keystroke("down");
17914    cx.assert_excerpts_with_selections(indoc! {"
17915        [EXCERPT]
17916        [FOLDED]
17917        [EXCERPT]
17918        a1
17919        b1
17920        ˇ[EXCERPT]
17921        [FOLDED]
17922        [EXCERPT]
17923        [FOLDED]
17924        "
17925    });
17926    cx.simulate_keystroke("down");
17927    cx.assert_excerpts_with_selections(indoc! {"
17928        [EXCERPT]
17929        [FOLDED]
17930        [EXCERPT]
17931        a1
17932        b1
17933        [EXCERPT]
17934        ˇ[FOLDED]
17935        [EXCERPT]
17936        [FOLDED]
17937        "
17938    });
17939    for _ in 0..5 {
17940        cx.simulate_keystroke("down");
17941        cx.assert_excerpts_with_selections(indoc! {"
17942            [EXCERPT]
17943            [FOLDED]
17944            [EXCERPT]
17945            a1
17946            b1
17947            [EXCERPT]
17948            [FOLDED]
17949            [EXCERPT]
17950            ˇ[FOLDED]
17951            "
17952        });
17953    }
17954
17955    cx.simulate_keystroke("up");
17956    cx.assert_excerpts_with_selections(indoc! {"
17957        [EXCERPT]
17958        [FOLDED]
17959        [EXCERPT]
17960        a1
17961        b1
17962        [EXCERPT]
17963        ˇ[FOLDED]
17964        [EXCERPT]
17965        [FOLDED]
17966        "
17967    });
17968    cx.simulate_keystroke("up");
17969    cx.assert_excerpts_with_selections(indoc! {"
17970        [EXCERPT]
17971        [FOLDED]
17972        [EXCERPT]
17973        a1
17974        b1
17975        ˇ[EXCERPT]
17976        [FOLDED]
17977        [EXCERPT]
17978        [FOLDED]
17979        "
17980    });
17981    cx.simulate_keystroke("up");
17982    cx.assert_excerpts_with_selections(indoc! {"
17983        [EXCERPT]
17984        [FOLDED]
17985        [EXCERPT]
17986        a1
17987        ˇb1
17988        [EXCERPT]
17989        [FOLDED]
17990        [EXCERPT]
17991        [FOLDED]
17992        "
17993    });
17994    cx.simulate_keystroke("up");
17995    cx.assert_excerpts_with_selections(indoc! {"
17996        [EXCERPT]
17997        [FOLDED]
17998        [EXCERPT]
17999        ˇa1
18000        b1
18001        [EXCERPT]
18002        [FOLDED]
18003        [EXCERPT]
18004        [FOLDED]
18005        "
18006    });
18007    for _ in 0..5 {
18008        cx.simulate_keystroke("up");
18009        cx.assert_excerpts_with_selections(indoc! {"
18010            [EXCERPT]
18011            ˇ[FOLDED]
18012            [EXCERPT]
18013            a1
18014            b1
18015            [EXCERPT]
18016            [FOLDED]
18017            [EXCERPT]
18018            [FOLDED]
18019            "
18020        });
18021    }
18022}
18023
18024#[gpui::test]
18025async fn test_inline_completion_text(cx: &mut TestAppContext) {
18026    init_test(cx, |_| {});
18027
18028    // Simple insertion
18029    assert_highlighted_edits(
18030        "Hello, world!",
18031        vec![(Point::new(0, 6)..Point::new(0, 6), " beautiful".into())],
18032        true,
18033        cx,
18034        |highlighted_edits, cx| {
18035            assert_eq!(highlighted_edits.text, "Hello, beautiful world!");
18036            assert_eq!(highlighted_edits.highlights.len(), 1);
18037            assert_eq!(highlighted_edits.highlights[0].0, 6..16);
18038            assert_eq!(
18039                highlighted_edits.highlights[0].1.background_color,
18040                Some(cx.theme().status().created_background)
18041            );
18042        },
18043    )
18044    .await;
18045
18046    // Replacement
18047    assert_highlighted_edits(
18048        "This is a test.",
18049        vec![(Point::new(0, 0)..Point::new(0, 4), "That".into())],
18050        false,
18051        cx,
18052        |highlighted_edits, cx| {
18053            assert_eq!(highlighted_edits.text, "That is a test.");
18054            assert_eq!(highlighted_edits.highlights.len(), 1);
18055            assert_eq!(highlighted_edits.highlights[0].0, 0..4);
18056            assert_eq!(
18057                highlighted_edits.highlights[0].1.background_color,
18058                Some(cx.theme().status().created_background)
18059            );
18060        },
18061    )
18062    .await;
18063
18064    // Multiple edits
18065    assert_highlighted_edits(
18066        "Hello, world!",
18067        vec![
18068            (Point::new(0, 0)..Point::new(0, 5), "Greetings".into()),
18069            (Point::new(0, 12)..Point::new(0, 12), " and universe".into()),
18070        ],
18071        false,
18072        cx,
18073        |highlighted_edits, cx| {
18074            assert_eq!(highlighted_edits.text, "Greetings, world and universe!");
18075            assert_eq!(highlighted_edits.highlights.len(), 2);
18076            assert_eq!(highlighted_edits.highlights[0].0, 0..9);
18077            assert_eq!(highlighted_edits.highlights[1].0, 16..29);
18078            assert_eq!(
18079                highlighted_edits.highlights[0].1.background_color,
18080                Some(cx.theme().status().created_background)
18081            );
18082            assert_eq!(
18083                highlighted_edits.highlights[1].1.background_color,
18084                Some(cx.theme().status().created_background)
18085            );
18086        },
18087    )
18088    .await;
18089
18090    // Multiple lines with edits
18091    assert_highlighted_edits(
18092        "First line\nSecond line\nThird line\nFourth line",
18093        vec![
18094            (Point::new(1, 7)..Point::new(1, 11), "modified".to_string()),
18095            (
18096                Point::new(2, 0)..Point::new(2, 10),
18097                "New third line".to_string(),
18098            ),
18099            (Point::new(3, 6)..Point::new(3, 6), " updated".to_string()),
18100        ],
18101        false,
18102        cx,
18103        |highlighted_edits, cx| {
18104            assert_eq!(
18105                highlighted_edits.text,
18106                "Second modified\nNew third line\nFourth updated line"
18107            );
18108            assert_eq!(highlighted_edits.highlights.len(), 3);
18109            assert_eq!(highlighted_edits.highlights[0].0, 7..15); // "modified"
18110            assert_eq!(highlighted_edits.highlights[1].0, 16..30); // "New third line"
18111            assert_eq!(highlighted_edits.highlights[2].0, 37..45); // " updated"
18112            for highlight in &highlighted_edits.highlights {
18113                assert_eq!(
18114                    highlight.1.background_color,
18115                    Some(cx.theme().status().created_background)
18116                );
18117            }
18118        },
18119    )
18120    .await;
18121}
18122
18123#[gpui::test]
18124async fn test_inline_completion_text_with_deletions(cx: &mut TestAppContext) {
18125    init_test(cx, |_| {});
18126
18127    // Deletion
18128    assert_highlighted_edits(
18129        "Hello, world!",
18130        vec![(Point::new(0, 5)..Point::new(0, 11), "".to_string())],
18131        true,
18132        cx,
18133        |highlighted_edits, cx| {
18134            assert_eq!(highlighted_edits.text, "Hello, world!");
18135            assert_eq!(highlighted_edits.highlights.len(), 1);
18136            assert_eq!(highlighted_edits.highlights[0].0, 5..11);
18137            assert_eq!(
18138                highlighted_edits.highlights[0].1.background_color,
18139                Some(cx.theme().status().deleted_background)
18140            );
18141        },
18142    )
18143    .await;
18144
18145    // Insertion
18146    assert_highlighted_edits(
18147        "Hello, world!",
18148        vec![(Point::new(0, 6)..Point::new(0, 6), " digital".to_string())],
18149        true,
18150        cx,
18151        |highlighted_edits, cx| {
18152            assert_eq!(highlighted_edits.highlights.len(), 1);
18153            assert_eq!(highlighted_edits.highlights[0].0, 6..14);
18154            assert_eq!(
18155                highlighted_edits.highlights[0].1.background_color,
18156                Some(cx.theme().status().created_background)
18157            );
18158        },
18159    )
18160    .await;
18161}
18162
18163async fn assert_highlighted_edits(
18164    text: &str,
18165    edits: Vec<(Range<Point>, String)>,
18166    include_deletions: bool,
18167    cx: &mut TestAppContext,
18168    assertion_fn: impl Fn(HighlightedText, &App),
18169) {
18170    let window = cx.add_window(|window, cx| {
18171        let buffer = MultiBuffer::build_simple(text, cx);
18172        Editor::new(EditorMode::full(), buffer, None, window, cx)
18173    });
18174    let cx = &mut VisualTestContext::from_window(*window, cx);
18175
18176    let (buffer, snapshot) = window
18177        .update(cx, |editor, _window, cx| {
18178            (
18179                editor.buffer().clone(),
18180                editor.buffer().read(cx).snapshot(cx),
18181            )
18182        })
18183        .unwrap();
18184
18185    let edits = edits
18186        .into_iter()
18187        .map(|(range, edit)| {
18188            (
18189                snapshot.anchor_after(range.start)..snapshot.anchor_before(range.end),
18190                edit,
18191            )
18192        })
18193        .collect::<Vec<_>>();
18194
18195    let text_anchor_edits = edits
18196        .clone()
18197        .into_iter()
18198        .map(|(range, edit)| (range.start.text_anchor..range.end.text_anchor, edit))
18199        .collect::<Vec<_>>();
18200
18201    let edit_preview = window
18202        .update(cx, |_, _window, cx| {
18203            buffer
18204                .read(cx)
18205                .as_singleton()
18206                .unwrap()
18207                .read(cx)
18208                .preview_edits(text_anchor_edits.into(), cx)
18209        })
18210        .unwrap()
18211        .await;
18212
18213    cx.update(|_window, cx| {
18214        let highlighted_edits = inline_completion_edit_text(
18215            &snapshot.as_singleton().unwrap().2,
18216            &edits,
18217            &edit_preview,
18218            include_deletions,
18219            cx,
18220        );
18221        assertion_fn(highlighted_edits, cx)
18222    });
18223}
18224
18225#[track_caller]
18226fn assert_breakpoint(
18227    breakpoints: &BTreeMap<Arc<Path>, Vec<SourceBreakpoint>>,
18228    path: &Arc<Path>,
18229    expected: Vec<(u32, Breakpoint)>,
18230) {
18231    if expected.len() == 0usize {
18232        assert!(!breakpoints.contains_key(path), "{}", path.display());
18233    } else {
18234        let mut breakpoint = breakpoints
18235            .get(path)
18236            .unwrap()
18237            .into_iter()
18238            .map(|breakpoint| {
18239                (
18240                    breakpoint.row,
18241                    Breakpoint {
18242                        message: breakpoint.message.clone(),
18243                        state: breakpoint.state,
18244                        condition: breakpoint.condition.clone(),
18245                        hit_condition: breakpoint.hit_condition.clone(),
18246                    },
18247                )
18248            })
18249            .collect::<Vec<_>>();
18250
18251        breakpoint.sort_by_key(|(cached_position, _)| *cached_position);
18252
18253        assert_eq!(expected, breakpoint);
18254    }
18255}
18256
18257fn add_log_breakpoint_at_cursor(
18258    editor: &mut Editor,
18259    log_message: &str,
18260    window: &mut Window,
18261    cx: &mut Context<Editor>,
18262) {
18263    let (anchor, bp) = editor
18264        .breakpoints_at_cursors(window, cx)
18265        .first()
18266        .and_then(|(anchor, bp)| {
18267            if let Some(bp) = bp {
18268                Some((*anchor, bp.clone()))
18269            } else {
18270                None
18271            }
18272        })
18273        .unwrap_or_else(|| {
18274            let cursor_position: Point = editor.selections.newest(cx).head();
18275
18276            let breakpoint_position = editor
18277                .snapshot(window, cx)
18278                .display_snapshot
18279                .buffer_snapshot
18280                .anchor_before(Point::new(cursor_position.row, 0));
18281
18282            (breakpoint_position, Breakpoint::new_log(&log_message))
18283        });
18284
18285    editor.edit_breakpoint_at_anchor(
18286        anchor,
18287        bp,
18288        BreakpointEditAction::EditLogMessage(log_message.into()),
18289        cx,
18290    );
18291}
18292
18293#[gpui::test]
18294async fn test_breakpoint_toggling(cx: &mut TestAppContext) {
18295    init_test(cx, |_| {});
18296
18297    let sample_text = "First line\nSecond line\nThird line\nFourth line".to_string();
18298    let fs = FakeFs::new(cx.executor());
18299    fs.insert_tree(
18300        path!("/a"),
18301        json!({
18302            "main.rs": sample_text,
18303        }),
18304    )
18305    .await;
18306    let project = Project::test(fs, [path!("/a").as_ref()], cx).await;
18307    let workspace = cx.add_window(|window, cx| Workspace::test_new(project.clone(), window, cx));
18308    let cx = &mut VisualTestContext::from_window(*workspace.deref(), cx);
18309
18310    let fs = FakeFs::new(cx.executor());
18311    fs.insert_tree(
18312        path!("/a"),
18313        json!({
18314            "main.rs": sample_text,
18315        }),
18316    )
18317    .await;
18318    let project = Project::test(fs, [path!("/a").as_ref()], cx).await;
18319    let workspace = cx.add_window(|window, cx| Workspace::test_new(project.clone(), window, cx));
18320    let cx = &mut VisualTestContext::from_window(*workspace.deref(), cx);
18321    let worktree_id = workspace
18322        .update(cx, |workspace, _window, cx| {
18323            workspace.project().update(cx, |project, cx| {
18324                project.worktrees(cx).next().unwrap().read(cx).id()
18325            })
18326        })
18327        .unwrap();
18328
18329    let buffer = project
18330        .update(cx, |project, cx| {
18331            project.open_buffer((worktree_id, "main.rs"), cx)
18332        })
18333        .await
18334        .unwrap();
18335
18336    let (editor, cx) = cx.add_window_view(|window, cx| {
18337        Editor::new(
18338            EditorMode::full(),
18339            MultiBuffer::build_from_buffer(buffer, cx),
18340            Some(project.clone()),
18341            window,
18342            cx,
18343        )
18344    });
18345
18346    let project_path = editor.update(cx, |editor, cx| editor.project_path(cx).unwrap());
18347    let abs_path = project.read_with(cx, |project, cx| {
18348        project
18349            .absolute_path(&project_path, cx)
18350            .map(|path_buf| Arc::from(path_buf.to_owned()))
18351            .unwrap()
18352    });
18353
18354    // assert we can add breakpoint on the first line
18355    editor.update_in(cx, |editor, window, cx| {
18356        editor.toggle_breakpoint(&actions::ToggleBreakpoint, window, cx);
18357        editor.move_to_end(&MoveToEnd, window, cx);
18358        editor.toggle_breakpoint(&actions::ToggleBreakpoint, window, cx);
18359    });
18360
18361    let breakpoints = editor.update(cx, |editor, cx| {
18362        editor
18363            .breakpoint_store()
18364            .as_ref()
18365            .unwrap()
18366            .read(cx)
18367            .all_breakpoints(cx)
18368            .clone()
18369    });
18370
18371    assert_eq!(1, breakpoints.len());
18372    assert_breakpoint(
18373        &breakpoints,
18374        &abs_path,
18375        vec![
18376            (0, Breakpoint::new_standard()),
18377            (3, Breakpoint::new_standard()),
18378        ],
18379    );
18380
18381    editor.update_in(cx, |editor, window, cx| {
18382        editor.move_to_beginning(&MoveToBeginning, window, cx);
18383        editor.toggle_breakpoint(&actions::ToggleBreakpoint, window, cx);
18384    });
18385
18386    let breakpoints = editor.update(cx, |editor, cx| {
18387        editor
18388            .breakpoint_store()
18389            .as_ref()
18390            .unwrap()
18391            .read(cx)
18392            .all_breakpoints(cx)
18393            .clone()
18394    });
18395
18396    assert_eq!(1, breakpoints.len());
18397    assert_breakpoint(
18398        &breakpoints,
18399        &abs_path,
18400        vec![(3, Breakpoint::new_standard())],
18401    );
18402
18403    editor.update_in(cx, |editor, window, cx| {
18404        editor.move_to_end(&MoveToEnd, window, cx);
18405        editor.toggle_breakpoint(&actions::ToggleBreakpoint, window, cx);
18406    });
18407
18408    let breakpoints = editor.update(cx, |editor, cx| {
18409        editor
18410            .breakpoint_store()
18411            .as_ref()
18412            .unwrap()
18413            .read(cx)
18414            .all_breakpoints(cx)
18415            .clone()
18416    });
18417
18418    assert_eq!(0, breakpoints.len());
18419    assert_breakpoint(&breakpoints, &abs_path, vec![]);
18420}
18421
18422#[gpui::test]
18423async fn test_log_breakpoint_editing(cx: &mut TestAppContext) {
18424    init_test(cx, |_| {});
18425
18426    let sample_text = "First line\nSecond line\nThird line\nFourth line".to_string();
18427
18428    let fs = FakeFs::new(cx.executor());
18429    fs.insert_tree(
18430        path!("/a"),
18431        json!({
18432            "main.rs": sample_text,
18433        }),
18434    )
18435    .await;
18436    let project = Project::test(fs, [path!("/a").as_ref()], cx).await;
18437    let (workspace, cx) =
18438        cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
18439
18440    let worktree_id = workspace.update(cx, |workspace, cx| {
18441        workspace.project().update(cx, |project, cx| {
18442            project.worktrees(cx).next().unwrap().read(cx).id()
18443        })
18444    });
18445
18446    let buffer = project
18447        .update(cx, |project, cx| {
18448            project.open_buffer((worktree_id, "main.rs"), cx)
18449        })
18450        .await
18451        .unwrap();
18452
18453    let (editor, cx) = cx.add_window_view(|window, cx| {
18454        Editor::new(
18455            EditorMode::full(),
18456            MultiBuffer::build_from_buffer(buffer, cx),
18457            Some(project.clone()),
18458            window,
18459            cx,
18460        )
18461    });
18462
18463    let project_path = editor.update(cx, |editor, cx| editor.project_path(cx).unwrap());
18464    let abs_path = project.read_with(cx, |project, cx| {
18465        project
18466            .absolute_path(&project_path, cx)
18467            .map(|path_buf| Arc::from(path_buf.to_owned()))
18468            .unwrap()
18469    });
18470
18471    editor.update_in(cx, |editor, window, cx| {
18472        add_log_breakpoint_at_cursor(editor, "hello world", window, cx);
18473    });
18474
18475    let breakpoints = editor.update(cx, |editor, cx| {
18476        editor
18477            .breakpoint_store()
18478            .as_ref()
18479            .unwrap()
18480            .read(cx)
18481            .all_breakpoints(cx)
18482            .clone()
18483    });
18484
18485    assert_breakpoint(
18486        &breakpoints,
18487        &abs_path,
18488        vec![(0, Breakpoint::new_log("hello world"))],
18489    );
18490
18491    // Removing a log message from a log breakpoint should remove it
18492    editor.update_in(cx, |editor, window, cx| {
18493        add_log_breakpoint_at_cursor(editor, "", window, cx);
18494    });
18495
18496    let breakpoints = editor.update(cx, |editor, cx| {
18497        editor
18498            .breakpoint_store()
18499            .as_ref()
18500            .unwrap()
18501            .read(cx)
18502            .all_breakpoints(cx)
18503            .clone()
18504    });
18505
18506    assert_breakpoint(&breakpoints, &abs_path, vec![]);
18507
18508    editor.update_in(cx, |editor, window, cx| {
18509        editor.toggle_breakpoint(&actions::ToggleBreakpoint, window, cx);
18510        editor.move_to_end(&MoveToEnd, window, cx);
18511        editor.toggle_breakpoint(&actions::ToggleBreakpoint, window, cx);
18512        // Not adding a log message to a standard breakpoint shouldn't remove it
18513        add_log_breakpoint_at_cursor(editor, "", window, cx);
18514    });
18515
18516    let breakpoints = editor.update(cx, |editor, cx| {
18517        editor
18518            .breakpoint_store()
18519            .as_ref()
18520            .unwrap()
18521            .read(cx)
18522            .all_breakpoints(cx)
18523            .clone()
18524    });
18525
18526    assert_breakpoint(
18527        &breakpoints,
18528        &abs_path,
18529        vec![
18530            (0, Breakpoint::new_standard()),
18531            (3, Breakpoint::new_standard()),
18532        ],
18533    );
18534
18535    editor.update_in(cx, |editor, window, cx| {
18536        add_log_breakpoint_at_cursor(editor, "hello world", window, cx);
18537    });
18538
18539    let breakpoints = editor.update(cx, |editor, cx| {
18540        editor
18541            .breakpoint_store()
18542            .as_ref()
18543            .unwrap()
18544            .read(cx)
18545            .all_breakpoints(cx)
18546            .clone()
18547    });
18548
18549    assert_breakpoint(
18550        &breakpoints,
18551        &abs_path,
18552        vec![
18553            (0, Breakpoint::new_standard()),
18554            (3, Breakpoint::new_log("hello world")),
18555        ],
18556    );
18557
18558    editor.update_in(cx, |editor, window, cx| {
18559        add_log_breakpoint_at_cursor(editor, "hello Earth!!", window, cx);
18560    });
18561
18562    let breakpoints = editor.update(cx, |editor, cx| {
18563        editor
18564            .breakpoint_store()
18565            .as_ref()
18566            .unwrap()
18567            .read(cx)
18568            .all_breakpoints(cx)
18569            .clone()
18570    });
18571
18572    assert_breakpoint(
18573        &breakpoints,
18574        &abs_path,
18575        vec![
18576            (0, Breakpoint::new_standard()),
18577            (3, Breakpoint::new_log("hello Earth!!")),
18578        ],
18579    );
18580}
18581
18582/// This also tests that Editor::breakpoint_at_cursor_head is working properly
18583/// we had some issues where we wouldn't find a breakpoint at Point {row: 0, col: 0}
18584/// or when breakpoints were placed out of order. This tests for a regression too
18585#[gpui::test]
18586async fn test_breakpoint_enabling_and_disabling(cx: &mut TestAppContext) {
18587    init_test(cx, |_| {});
18588
18589    let sample_text = "First line\nSecond line\nThird line\nFourth line".to_string();
18590    let fs = FakeFs::new(cx.executor());
18591    fs.insert_tree(
18592        path!("/a"),
18593        json!({
18594            "main.rs": sample_text,
18595        }),
18596    )
18597    .await;
18598    let project = Project::test(fs, [path!("/a").as_ref()], cx).await;
18599    let workspace = cx.add_window(|window, cx| Workspace::test_new(project.clone(), window, cx));
18600    let cx = &mut VisualTestContext::from_window(*workspace.deref(), cx);
18601
18602    let fs = FakeFs::new(cx.executor());
18603    fs.insert_tree(
18604        path!("/a"),
18605        json!({
18606            "main.rs": sample_text,
18607        }),
18608    )
18609    .await;
18610    let project = Project::test(fs, [path!("/a").as_ref()], cx).await;
18611    let workspace = cx.add_window(|window, cx| Workspace::test_new(project.clone(), window, cx));
18612    let cx = &mut VisualTestContext::from_window(*workspace.deref(), cx);
18613    let worktree_id = workspace
18614        .update(cx, |workspace, _window, cx| {
18615            workspace.project().update(cx, |project, cx| {
18616                project.worktrees(cx).next().unwrap().read(cx).id()
18617            })
18618        })
18619        .unwrap();
18620
18621    let buffer = project
18622        .update(cx, |project, cx| {
18623            project.open_buffer((worktree_id, "main.rs"), cx)
18624        })
18625        .await
18626        .unwrap();
18627
18628    let (editor, cx) = cx.add_window_view(|window, cx| {
18629        Editor::new(
18630            EditorMode::full(),
18631            MultiBuffer::build_from_buffer(buffer, cx),
18632            Some(project.clone()),
18633            window,
18634            cx,
18635        )
18636    });
18637
18638    let project_path = editor.update(cx, |editor, cx| editor.project_path(cx).unwrap());
18639    let abs_path = project.read_with(cx, |project, cx| {
18640        project
18641            .absolute_path(&project_path, cx)
18642            .map(|path_buf| Arc::from(path_buf.to_owned()))
18643            .unwrap()
18644    });
18645
18646    // assert we can add breakpoint on the first line
18647    editor.update_in(cx, |editor, window, cx| {
18648        editor.toggle_breakpoint(&actions::ToggleBreakpoint, window, cx);
18649        editor.move_to_end(&MoveToEnd, window, cx);
18650        editor.toggle_breakpoint(&actions::ToggleBreakpoint, window, cx);
18651        editor.move_up(&MoveUp, window, cx);
18652        editor.toggle_breakpoint(&actions::ToggleBreakpoint, window, cx);
18653    });
18654
18655    let breakpoints = editor.update(cx, |editor, cx| {
18656        editor
18657            .breakpoint_store()
18658            .as_ref()
18659            .unwrap()
18660            .read(cx)
18661            .all_breakpoints(cx)
18662            .clone()
18663    });
18664
18665    assert_eq!(1, breakpoints.len());
18666    assert_breakpoint(
18667        &breakpoints,
18668        &abs_path,
18669        vec![
18670            (0, Breakpoint::new_standard()),
18671            (2, Breakpoint::new_standard()),
18672            (3, Breakpoint::new_standard()),
18673        ],
18674    );
18675
18676    editor.update_in(cx, |editor, window, cx| {
18677        editor.move_to_beginning(&MoveToBeginning, window, cx);
18678        editor.disable_breakpoint(&actions::DisableBreakpoint, window, cx);
18679        editor.move_to_end(&MoveToEnd, window, cx);
18680        editor.disable_breakpoint(&actions::DisableBreakpoint, window, cx);
18681        // Disabling a breakpoint that doesn't exist should do nothing
18682        editor.move_up(&MoveUp, window, cx);
18683        editor.move_up(&MoveUp, window, cx);
18684        editor.disable_breakpoint(&actions::DisableBreakpoint, window, cx);
18685    });
18686
18687    let breakpoints = editor.update(cx, |editor, cx| {
18688        editor
18689            .breakpoint_store()
18690            .as_ref()
18691            .unwrap()
18692            .read(cx)
18693            .all_breakpoints(cx)
18694            .clone()
18695    });
18696
18697    let disable_breakpoint = {
18698        let mut bp = Breakpoint::new_standard();
18699        bp.state = BreakpointState::Disabled;
18700        bp
18701    };
18702
18703    assert_eq!(1, breakpoints.len());
18704    assert_breakpoint(
18705        &breakpoints,
18706        &abs_path,
18707        vec![
18708            (0, disable_breakpoint.clone()),
18709            (2, Breakpoint::new_standard()),
18710            (3, disable_breakpoint.clone()),
18711        ],
18712    );
18713
18714    editor.update_in(cx, |editor, window, cx| {
18715        editor.move_to_beginning(&MoveToBeginning, window, cx);
18716        editor.enable_breakpoint(&actions::EnableBreakpoint, window, cx);
18717        editor.move_to_end(&MoveToEnd, window, cx);
18718        editor.enable_breakpoint(&actions::EnableBreakpoint, window, cx);
18719        editor.move_up(&MoveUp, window, cx);
18720        editor.disable_breakpoint(&actions::DisableBreakpoint, window, cx);
18721    });
18722
18723    let breakpoints = editor.update(cx, |editor, cx| {
18724        editor
18725            .breakpoint_store()
18726            .as_ref()
18727            .unwrap()
18728            .read(cx)
18729            .all_breakpoints(cx)
18730            .clone()
18731    });
18732
18733    assert_eq!(1, breakpoints.len());
18734    assert_breakpoint(
18735        &breakpoints,
18736        &abs_path,
18737        vec![
18738            (0, Breakpoint::new_standard()),
18739            (2, disable_breakpoint),
18740            (3, Breakpoint::new_standard()),
18741        ],
18742    );
18743}
18744
18745#[gpui::test]
18746async fn test_rename_with_duplicate_edits(cx: &mut TestAppContext) {
18747    init_test(cx, |_| {});
18748    let capabilities = lsp::ServerCapabilities {
18749        rename_provider: Some(lsp::OneOf::Right(lsp::RenameOptions {
18750            prepare_provider: Some(true),
18751            work_done_progress_options: Default::default(),
18752        })),
18753        ..Default::default()
18754    };
18755    let mut cx = EditorLspTestContext::new_rust(capabilities, cx).await;
18756
18757    cx.set_state(indoc! {"
18758        struct Fˇoo {}
18759    "});
18760
18761    cx.update_editor(|editor, _, cx| {
18762        let highlight_range = Point::new(0, 7)..Point::new(0, 10);
18763        let highlight_range = highlight_range.to_anchors(&editor.buffer().read(cx).snapshot(cx));
18764        editor.highlight_background::<DocumentHighlightRead>(
18765            &[highlight_range],
18766            |c| c.editor_document_highlight_read_background,
18767            cx,
18768        );
18769    });
18770
18771    let mut prepare_rename_handler = cx
18772        .set_request_handler::<lsp::request::PrepareRenameRequest, _, _>(
18773            move |_, _, _| async move {
18774                Ok(Some(lsp::PrepareRenameResponse::Range(lsp::Range {
18775                    start: lsp::Position {
18776                        line: 0,
18777                        character: 7,
18778                    },
18779                    end: lsp::Position {
18780                        line: 0,
18781                        character: 10,
18782                    },
18783                })))
18784            },
18785        );
18786    let prepare_rename_task = cx
18787        .update_editor(|e, window, cx| e.rename(&Rename, window, cx))
18788        .expect("Prepare rename was not started");
18789    prepare_rename_handler.next().await.unwrap();
18790    prepare_rename_task.await.expect("Prepare rename failed");
18791
18792    let mut rename_handler =
18793        cx.set_request_handler::<lsp::request::Rename, _, _>(move |url, _, _| async move {
18794            let edit = lsp::TextEdit {
18795                range: lsp::Range {
18796                    start: lsp::Position {
18797                        line: 0,
18798                        character: 7,
18799                    },
18800                    end: lsp::Position {
18801                        line: 0,
18802                        character: 10,
18803                    },
18804                },
18805                new_text: "FooRenamed".to_string(),
18806            };
18807            Ok(Some(lsp::WorkspaceEdit::new(
18808                // Specify the same edit twice
18809                std::collections::HashMap::from_iter(Some((url, vec![edit.clone(), edit]))),
18810            )))
18811        });
18812    let rename_task = cx
18813        .update_editor(|e, window, cx| e.confirm_rename(&ConfirmRename, window, cx))
18814        .expect("Confirm rename was not started");
18815    rename_handler.next().await.unwrap();
18816    rename_task.await.expect("Confirm rename failed");
18817    cx.run_until_parked();
18818
18819    // Despite two edits, only one is actually applied as those are identical
18820    cx.assert_editor_state(indoc! {"
18821        struct FooRenamedˇ {}
18822    "});
18823}
18824
18825#[gpui::test]
18826async fn test_rename_without_prepare(cx: &mut TestAppContext) {
18827    init_test(cx, |_| {});
18828    // These capabilities indicate that the server does not support prepare rename.
18829    let capabilities = lsp::ServerCapabilities {
18830        rename_provider: Some(lsp::OneOf::Left(true)),
18831        ..Default::default()
18832    };
18833    let mut cx = EditorLspTestContext::new_rust(capabilities, cx).await;
18834
18835    cx.set_state(indoc! {"
18836        struct Fˇoo {}
18837    "});
18838
18839    cx.update_editor(|editor, _window, cx| {
18840        let highlight_range = Point::new(0, 7)..Point::new(0, 10);
18841        let highlight_range = highlight_range.to_anchors(&editor.buffer().read(cx).snapshot(cx));
18842        editor.highlight_background::<DocumentHighlightRead>(
18843            &[highlight_range],
18844            |c| c.editor_document_highlight_read_background,
18845            cx,
18846        );
18847    });
18848
18849    cx.update_editor(|e, window, cx| e.rename(&Rename, window, cx))
18850        .expect("Prepare rename was not started")
18851        .await
18852        .expect("Prepare rename failed");
18853
18854    let mut rename_handler =
18855        cx.set_request_handler::<lsp::request::Rename, _, _>(move |url, _, _| async move {
18856            let edit = lsp::TextEdit {
18857                range: lsp::Range {
18858                    start: lsp::Position {
18859                        line: 0,
18860                        character: 7,
18861                    },
18862                    end: lsp::Position {
18863                        line: 0,
18864                        character: 10,
18865                    },
18866                },
18867                new_text: "FooRenamed".to_string(),
18868            };
18869            Ok(Some(lsp::WorkspaceEdit::new(
18870                std::collections::HashMap::from_iter(Some((url, vec![edit]))),
18871            )))
18872        });
18873    let rename_task = cx
18874        .update_editor(|e, window, cx| e.confirm_rename(&ConfirmRename, window, cx))
18875        .expect("Confirm rename was not started");
18876    rename_handler.next().await.unwrap();
18877    rename_task.await.expect("Confirm rename failed");
18878    cx.run_until_parked();
18879
18880    // Correct range is renamed, as `surrounding_word` is used to find it.
18881    cx.assert_editor_state(indoc! {"
18882        struct FooRenamedˇ {}
18883    "});
18884}
18885
18886#[gpui::test]
18887async fn test_tree_sitter_brackets_newline_insertion(cx: &mut TestAppContext) {
18888    init_test(cx, |_| {});
18889    let mut cx = EditorTestContext::new(cx).await;
18890
18891    let language = Arc::new(
18892        Language::new(
18893            LanguageConfig::default(),
18894            Some(tree_sitter_html::LANGUAGE.into()),
18895        )
18896        .with_brackets_query(
18897            r#"
18898            ("<" @open "/>" @close)
18899            ("</" @open ">" @close)
18900            ("<" @open ">" @close)
18901            ("\"" @open "\"" @close)
18902            ((element (start_tag) @open (end_tag) @close) (#set! newline.only))
18903        "#,
18904        )
18905        .unwrap(),
18906    );
18907    cx.update_buffer(|buffer, cx| buffer.set_language(Some(language), cx));
18908
18909    cx.set_state(indoc! {"
18910        <span>ˇ</span>
18911    "});
18912    cx.update_editor(|e, window, cx| e.newline(&Newline, window, cx));
18913    cx.assert_editor_state(indoc! {"
18914        <span>
18915        ˇ
18916        </span>
18917    "});
18918
18919    cx.set_state(indoc! {"
18920        <span><span></span>ˇ</span>
18921    "});
18922    cx.update_editor(|e, window, cx| e.newline(&Newline, window, cx));
18923    cx.assert_editor_state(indoc! {"
18924        <span><span></span>
18925        ˇ</span>
18926    "});
18927
18928    cx.set_state(indoc! {"
18929        <span>ˇ
18930        </span>
18931    "});
18932    cx.update_editor(|e, window, cx| e.newline(&Newline, window, cx));
18933    cx.assert_editor_state(indoc! {"
18934        <span>
18935        ˇ
18936        </span>
18937    "});
18938}
18939
18940#[gpui::test(iterations = 10)]
18941async fn test_apply_code_lens_actions_with_commands(cx: &mut gpui::TestAppContext) {
18942    init_test(cx, |_| {});
18943
18944    let fs = FakeFs::new(cx.executor());
18945    fs.insert_tree(
18946        path!("/dir"),
18947        json!({
18948            "a.ts": "a",
18949        }),
18950    )
18951    .await;
18952
18953    let project = Project::test(fs, [path!("/dir").as_ref()], cx).await;
18954    let workspace = cx.add_window(|window, cx| Workspace::test_new(project.clone(), window, cx));
18955    let cx = &mut VisualTestContext::from_window(*workspace.deref(), cx);
18956
18957    let language_registry = project.read_with(cx, |project, _| project.languages().clone());
18958    language_registry.add(Arc::new(Language::new(
18959        LanguageConfig {
18960            name: "TypeScript".into(),
18961            matcher: LanguageMatcher {
18962                path_suffixes: vec!["ts".to_string()],
18963                ..Default::default()
18964            },
18965            ..Default::default()
18966        },
18967        Some(tree_sitter_typescript::LANGUAGE_TYPESCRIPT.into()),
18968    )));
18969    let mut fake_language_servers = language_registry.register_fake_lsp(
18970        "TypeScript",
18971        FakeLspAdapter {
18972            capabilities: lsp::ServerCapabilities {
18973                code_lens_provider: Some(lsp::CodeLensOptions {
18974                    resolve_provider: Some(true),
18975                }),
18976                execute_command_provider: Some(lsp::ExecuteCommandOptions {
18977                    commands: vec!["_the/command".to_string()],
18978                    ..lsp::ExecuteCommandOptions::default()
18979                }),
18980                ..lsp::ServerCapabilities::default()
18981            },
18982            ..FakeLspAdapter::default()
18983        },
18984    );
18985
18986    let (buffer, _handle) = project
18987        .update(cx, |p, cx| {
18988            p.open_local_buffer_with_lsp(path!("/dir/a.ts"), cx)
18989        })
18990        .await
18991        .unwrap();
18992    cx.executor().run_until_parked();
18993
18994    let fake_server = fake_language_servers.next().await.unwrap();
18995
18996    let buffer_snapshot = buffer.update(cx, |buffer, _| buffer.snapshot());
18997    let anchor = buffer_snapshot.anchor_at(0, text::Bias::Left);
18998    drop(buffer_snapshot);
18999    let actions = cx
19000        .update_window(*workspace, |_, window, cx| {
19001            project.code_actions(&buffer, anchor..anchor, window, cx)
19002        })
19003        .unwrap();
19004
19005    fake_server
19006        .set_request_handler::<lsp::request::CodeLensRequest, _, _>(|_, _| async move {
19007            Ok(Some(vec![
19008                lsp::CodeLens {
19009                    range: lsp::Range::default(),
19010                    command: Some(lsp::Command {
19011                        title: "Code lens command".to_owned(),
19012                        command: "_the/command".to_owned(),
19013                        arguments: None,
19014                    }),
19015                    data: None,
19016                },
19017                lsp::CodeLens {
19018                    range: lsp::Range::default(),
19019                    command: Some(lsp::Command {
19020                        title: "Command not in capabilities".to_owned(),
19021                        command: "not in capabilities".to_owned(),
19022                        arguments: None,
19023                    }),
19024                    data: None,
19025                },
19026                lsp::CodeLens {
19027                    range: lsp::Range {
19028                        start: lsp::Position {
19029                            line: 1,
19030                            character: 1,
19031                        },
19032                        end: lsp::Position {
19033                            line: 1,
19034                            character: 1,
19035                        },
19036                    },
19037                    command: Some(lsp::Command {
19038                        title: "Command not in range".to_owned(),
19039                        command: "_the/command".to_owned(),
19040                        arguments: None,
19041                    }),
19042                    data: None,
19043                },
19044            ]))
19045        })
19046        .next()
19047        .await;
19048
19049    let actions = actions.await.unwrap();
19050    assert_eq!(
19051        actions.len(),
19052        1,
19053        "Should have only one valid action for the 0..0 range"
19054    );
19055    let action = actions[0].clone();
19056    let apply = project.update(cx, |project, cx| {
19057        project.apply_code_action(buffer.clone(), action, true, cx)
19058    });
19059
19060    // Resolving the code action does not populate its edits. In absence of
19061    // edits, we must execute the given command.
19062    fake_server.set_request_handler::<lsp::request::CodeLensResolve, _, _>(
19063        |mut lens, _| async move {
19064            let lens_command = lens.command.as_mut().expect("should have a command");
19065            assert_eq!(lens_command.title, "Code lens command");
19066            lens_command.arguments = Some(vec![json!("the-argument")]);
19067            Ok(lens)
19068        },
19069    );
19070
19071    // While executing the command, the language server sends the editor
19072    // a `workspaceEdit` request.
19073    fake_server
19074        .set_request_handler::<lsp::request::ExecuteCommand, _, _>({
19075            let fake = fake_server.clone();
19076            move |params, _| {
19077                assert_eq!(params.command, "_the/command");
19078                let fake = fake.clone();
19079                async move {
19080                    fake.server
19081                        .request::<lsp::request::ApplyWorkspaceEdit>(
19082                            lsp::ApplyWorkspaceEditParams {
19083                                label: None,
19084                                edit: lsp::WorkspaceEdit {
19085                                    changes: Some(
19086                                        [(
19087                                            lsp::Url::from_file_path(path!("/dir/a.ts")).unwrap(),
19088                                            vec![lsp::TextEdit {
19089                                                range: lsp::Range::new(
19090                                                    lsp::Position::new(0, 0),
19091                                                    lsp::Position::new(0, 0),
19092                                                ),
19093                                                new_text: "X".into(),
19094                                            }],
19095                                        )]
19096                                        .into_iter()
19097                                        .collect(),
19098                                    ),
19099                                    ..Default::default()
19100                                },
19101                            },
19102                        )
19103                        .await
19104                        .unwrap();
19105                    Ok(Some(json!(null)))
19106                }
19107            }
19108        })
19109        .next()
19110        .await;
19111
19112    // Applying the code lens command returns a project transaction containing the edits
19113    // sent by the language server in its `workspaceEdit` request.
19114    let transaction = apply.await.unwrap();
19115    assert!(transaction.0.contains_key(&buffer));
19116    buffer.update(cx, |buffer, cx| {
19117        assert_eq!(buffer.text(), "Xa");
19118        buffer.undo(cx);
19119        assert_eq!(buffer.text(), "a");
19120    });
19121}
19122
19123#[gpui::test]
19124async fn test_editor_restore_data_different_in_panes(cx: &mut TestAppContext) {
19125    init_test(cx, |_| {});
19126
19127    let fs = FakeFs::new(cx.executor());
19128    let main_text = r#"fn main() {
19129println!("1");
19130println!("2");
19131println!("3");
19132println!("4");
19133println!("5");
19134}"#;
19135    let lib_text = "mod foo {}";
19136    fs.insert_tree(
19137        path!("/a"),
19138        json!({
19139            "lib.rs": lib_text,
19140            "main.rs": main_text,
19141        }),
19142    )
19143    .await;
19144
19145    let project = Project::test(fs, [path!("/a").as_ref()], cx).await;
19146    let (workspace, cx) =
19147        cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
19148    let worktree_id = workspace.update(cx, |workspace, cx| {
19149        workspace.project().update(cx, |project, cx| {
19150            project.worktrees(cx).next().unwrap().read(cx).id()
19151        })
19152    });
19153
19154    let expected_ranges = vec![
19155        Point::new(0, 0)..Point::new(0, 0),
19156        Point::new(1, 0)..Point::new(1, 1),
19157        Point::new(2, 0)..Point::new(2, 2),
19158        Point::new(3, 0)..Point::new(3, 3),
19159    ];
19160
19161    let pane_1 = workspace.update(cx, |workspace, _| workspace.active_pane().clone());
19162    let editor_1 = workspace
19163        .update_in(cx, |workspace, window, cx| {
19164            workspace.open_path(
19165                (worktree_id, "main.rs"),
19166                Some(pane_1.downgrade()),
19167                true,
19168                window,
19169                cx,
19170            )
19171        })
19172        .unwrap()
19173        .await
19174        .downcast::<Editor>()
19175        .unwrap();
19176    pane_1.update(cx, |pane, cx| {
19177        let open_editor = pane.active_item().unwrap().downcast::<Editor>().unwrap();
19178        open_editor.update(cx, |editor, cx| {
19179            assert_eq!(
19180                editor.display_text(cx),
19181                main_text,
19182                "Original main.rs text on initial open",
19183            );
19184            assert_eq!(
19185                editor
19186                    .selections
19187                    .all::<Point>(cx)
19188                    .into_iter()
19189                    .map(|s| s.range())
19190                    .collect::<Vec<_>>(),
19191                vec![Point::zero()..Point::zero()],
19192                "Default selections on initial open",
19193            );
19194        })
19195    });
19196    editor_1.update_in(cx, |editor, window, cx| {
19197        editor.change_selections(None, window, cx, |s| {
19198            s.select_ranges(expected_ranges.clone());
19199        });
19200    });
19201
19202    let pane_2 = workspace.update_in(cx, |workspace, window, cx| {
19203        workspace.split_pane(pane_1.clone(), SplitDirection::Right, window, cx)
19204    });
19205    let editor_2 = workspace
19206        .update_in(cx, |workspace, window, cx| {
19207            workspace.open_path(
19208                (worktree_id, "main.rs"),
19209                Some(pane_2.downgrade()),
19210                true,
19211                window,
19212                cx,
19213            )
19214        })
19215        .unwrap()
19216        .await
19217        .downcast::<Editor>()
19218        .unwrap();
19219    pane_2.update(cx, |pane, cx| {
19220        let open_editor = pane.active_item().unwrap().downcast::<Editor>().unwrap();
19221        open_editor.update(cx, |editor, cx| {
19222            assert_eq!(
19223                editor.display_text(cx),
19224                main_text,
19225                "Original main.rs text on initial open in another panel",
19226            );
19227            assert_eq!(
19228                editor
19229                    .selections
19230                    .all::<Point>(cx)
19231                    .into_iter()
19232                    .map(|s| s.range())
19233                    .collect::<Vec<_>>(),
19234                vec![Point::zero()..Point::zero()],
19235                "Default selections on initial open in another panel",
19236            );
19237        })
19238    });
19239
19240    editor_2.update_in(cx, |editor, window, cx| {
19241        editor.fold_ranges(expected_ranges.clone(), false, window, cx);
19242    });
19243
19244    let _other_editor_1 = workspace
19245        .update_in(cx, |workspace, window, cx| {
19246            workspace.open_path(
19247                (worktree_id, "lib.rs"),
19248                Some(pane_1.downgrade()),
19249                true,
19250                window,
19251                cx,
19252            )
19253        })
19254        .unwrap()
19255        .await
19256        .downcast::<Editor>()
19257        .unwrap();
19258    pane_1
19259        .update_in(cx, |pane, window, cx| {
19260            pane.close_inactive_items(&CloseInactiveItems::default(), window, cx)
19261                .unwrap()
19262        })
19263        .await
19264        .unwrap();
19265    drop(editor_1);
19266    pane_1.update(cx, |pane, cx| {
19267        pane.active_item()
19268            .unwrap()
19269            .downcast::<Editor>()
19270            .unwrap()
19271            .update(cx, |editor, cx| {
19272                assert_eq!(
19273                    editor.display_text(cx),
19274                    lib_text,
19275                    "Other file should be open and active",
19276                );
19277            });
19278        assert_eq!(pane.items().count(), 1, "No other editors should be open");
19279    });
19280
19281    let _other_editor_2 = workspace
19282        .update_in(cx, |workspace, window, cx| {
19283            workspace.open_path(
19284                (worktree_id, "lib.rs"),
19285                Some(pane_2.downgrade()),
19286                true,
19287                window,
19288                cx,
19289            )
19290        })
19291        .unwrap()
19292        .await
19293        .downcast::<Editor>()
19294        .unwrap();
19295    pane_2
19296        .update_in(cx, |pane, window, cx| {
19297            pane.close_inactive_items(&CloseInactiveItems::default(), window, cx)
19298                .unwrap()
19299        })
19300        .await
19301        .unwrap();
19302    drop(editor_2);
19303    pane_2.update(cx, |pane, cx| {
19304        let open_editor = pane.active_item().unwrap().downcast::<Editor>().unwrap();
19305        open_editor.update(cx, |editor, cx| {
19306            assert_eq!(
19307                editor.display_text(cx),
19308                lib_text,
19309                "Other file should be open and active in another panel too",
19310            );
19311        });
19312        assert_eq!(
19313            pane.items().count(),
19314            1,
19315            "No other editors should be open in another pane",
19316        );
19317    });
19318
19319    let _editor_1_reopened = workspace
19320        .update_in(cx, |workspace, window, cx| {
19321            workspace.open_path(
19322                (worktree_id, "main.rs"),
19323                Some(pane_1.downgrade()),
19324                true,
19325                window,
19326                cx,
19327            )
19328        })
19329        .unwrap()
19330        .await
19331        .downcast::<Editor>()
19332        .unwrap();
19333    let _editor_2_reopened = workspace
19334        .update_in(cx, |workspace, window, cx| {
19335            workspace.open_path(
19336                (worktree_id, "main.rs"),
19337                Some(pane_2.downgrade()),
19338                true,
19339                window,
19340                cx,
19341            )
19342        })
19343        .unwrap()
19344        .await
19345        .downcast::<Editor>()
19346        .unwrap();
19347    pane_1.update(cx, |pane, cx| {
19348        let open_editor = pane.active_item().unwrap().downcast::<Editor>().unwrap();
19349        open_editor.update(cx, |editor, cx| {
19350            assert_eq!(
19351                editor.display_text(cx),
19352                main_text,
19353                "Previous editor in the 1st panel had no extra text manipulations and should get none on reopen",
19354            );
19355            assert_eq!(
19356                editor
19357                    .selections
19358                    .all::<Point>(cx)
19359                    .into_iter()
19360                    .map(|s| s.range())
19361                    .collect::<Vec<_>>(),
19362                expected_ranges,
19363                "Previous editor in the 1st panel had selections and should get them restored on reopen",
19364            );
19365        })
19366    });
19367    pane_2.update(cx, |pane, cx| {
19368        let open_editor = pane.active_item().unwrap().downcast::<Editor>().unwrap();
19369        open_editor.update(cx, |editor, cx| {
19370            assert_eq!(
19371                editor.display_text(cx),
19372                r#"fn main() {
19373⋯rintln!("1");
19374⋯intln!("2");
19375⋯ntln!("3");
19376println!("4");
19377println!("5");
19378}"#,
19379                "Previous editor in the 2nd pane had folds and should restore those on reopen in the same pane",
19380            );
19381            assert_eq!(
19382                editor
19383                    .selections
19384                    .all::<Point>(cx)
19385                    .into_iter()
19386                    .map(|s| s.range())
19387                    .collect::<Vec<_>>(),
19388                vec![Point::zero()..Point::zero()],
19389                "Previous editor in the 2nd pane had no selections changed hence should restore none",
19390            );
19391        })
19392    });
19393}
19394
19395#[gpui::test]
19396async fn test_editor_does_not_restore_data_when_turned_off(cx: &mut TestAppContext) {
19397    init_test(cx, |_| {});
19398
19399    let fs = FakeFs::new(cx.executor());
19400    let main_text = r#"fn main() {
19401println!("1");
19402println!("2");
19403println!("3");
19404println!("4");
19405println!("5");
19406}"#;
19407    let lib_text = "mod foo {}";
19408    fs.insert_tree(
19409        path!("/a"),
19410        json!({
19411            "lib.rs": lib_text,
19412            "main.rs": main_text,
19413        }),
19414    )
19415    .await;
19416
19417    let project = Project::test(fs, [path!("/a").as_ref()], cx).await;
19418    let (workspace, cx) =
19419        cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
19420    let worktree_id = workspace.update(cx, |workspace, cx| {
19421        workspace.project().update(cx, |project, cx| {
19422            project.worktrees(cx).next().unwrap().read(cx).id()
19423        })
19424    });
19425
19426    let pane = workspace.update(cx, |workspace, _| workspace.active_pane().clone());
19427    let editor = workspace
19428        .update_in(cx, |workspace, window, cx| {
19429            workspace.open_path(
19430                (worktree_id, "main.rs"),
19431                Some(pane.downgrade()),
19432                true,
19433                window,
19434                cx,
19435            )
19436        })
19437        .unwrap()
19438        .await
19439        .downcast::<Editor>()
19440        .unwrap();
19441    pane.update(cx, |pane, cx| {
19442        let open_editor = pane.active_item().unwrap().downcast::<Editor>().unwrap();
19443        open_editor.update(cx, |editor, cx| {
19444            assert_eq!(
19445                editor.display_text(cx),
19446                main_text,
19447                "Original main.rs text on initial open",
19448            );
19449        })
19450    });
19451    editor.update_in(cx, |editor, window, cx| {
19452        editor.fold_ranges(vec![Point::new(0, 0)..Point::new(0, 0)], false, window, cx);
19453    });
19454
19455    cx.update_global(|store: &mut SettingsStore, cx| {
19456        store.update_user_settings::<WorkspaceSettings>(cx, |s| {
19457            s.restore_on_file_reopen = Some(false);
19458        });
19459    });
19460    editor.update_in(cx, |editor, window, cx| {
19461        editor.fold_ranges(
19462            vec![
19463                Point::new(1, 0)..Point::new(1, 1),
19464                Point::new(2, 0)..Point::new(2, 2),
19465                Point::new(3, 0)..Point::new(3, 3),
19466            ],
19467            false,
19468            window,
19469            cx,
19470        );
19471    });
19472    pane.update_in(cx, |pane, window, cx| {
19473        pane.close_all_items(&CloseAllItems::default(), window, cx)
19474            .unwrap()
19475    })
19476    .await
19477    .unwrap();
19478    pane.update(cx, |pane, _| {
19479        assert!(pane.active_item().is_none());
19480    });
19481    cx.update_global(|store: &mut SettingsStore, cx| {
19482        store.update_user_settings::<WorkspaceSettings>(cx, |s| {
19483            s.restore_on_file_reopen = Some(true);
19484        });
19485    });
19486
19487    let _editor_reopened = workspace
19488        .update_in(cx, |workspace, window, cx| {
19489            workspace.open_path(
19490                (worktree_id, "main.rs"),
19491                Some(pane.downgrade()),
19492                true,
19493                window,
19494                cx,
19495            )
19496        })
19497        .unwrap()
19498        .await
19499        .downcast::<Editor>()
19500        .unwrap();
19501    pane.update(cx, |pane, cx| {
19502        let open_editor = pane.active_item().unwrap().downcast::<Editor>().unwrap();
19503        open_editor.update(cx, |editor, cx| {
19504            assert_eq!(
19505                editor.display_text(cx),
19506                main_text,
19507                "No folds: even after enabling the restoration, previous editor's data should not be saved to be used for the restoration"
19508            );
19509        })
19510    });
19511}
19512
19513#[gpui::test]
19514async fn test_hide_mouse_context_menu_on_modal_opened(cx: &mut TestAppContext) {
19515    struct EmptyModalView {
19516        focus_handle: gpui::FocusHandle,
19517    }
19518    impl EventEmitter<DismissEvent> for EmptyModalView {}
19519    impl Render for EmptyModalView {
19520        fn render(&mut self, _: &mut Window, _: &mut Context<'_, Self>) -> impl IntoElement {
19521            div()
19522        }
19523    }
19524    impl Focusable for EmptyModalView {
19525        fn focus_handle(&self, _cx: &App) -> gpui::FocusHandle {
19526            self.focus_handle.clone()
19527        }
19528    }
19529    impl workspace::ModalView for EmptyModalView {}
19530    fn new_empty_modal_view(cx: &App) -> EmptyModalView {
19531        EmptyModalView {
19532            focus_handle: cx.focus_handle(),
19533        }
19534    }
19535
19536    init_test(cx, |_| {});
19537
19538    let fs = FakeFs::new(cx.executor());
19539    let project = Project::test(fs, [], cx).await;
19540    let workspace = cx.add_window(|window, cx| Workspace::test_new(project.clone(), window, cx));
19541    let buffer = cx.update(|cx| MultiBuffer::build_simple("hello world!", cx));
19542    let cx = &mut VisualTestContext::from_window(*workspace.deref(), cx);
19543    let editor = cx.new_window_entity(|window, cx| {
19544        Editor::new(
19545            EditorMode::full(),
19546            buffer,
19547            Some(project.clone()),
19548            window,
19549            cx,
19550        )
19551    });
19552    workspace
19553        .update(cx, |workspace, window, cx| {
19554            workspace.add_item_to_active_pane(Box::new(editor.clone()), None, true, window, cx);
19555        })
19556        .unwrap();
19557    editor.update_in(cx, |editor, window, cx| {
19558        editor.open_context_menu(&OpenContextMenu, window, cx);
19559        assert!(editor.mouse_context_menu.is_some());
19560    });
19561    workspace
19562        .update(cx, |workspace, window, cx| {
19563            workspace.toggle_modal(window, cx, |_, cx| new_empty_modal_view(cx));
19564        })
19565        .unwrap();
19566    cx.read(|cx| {
19567        assert!(editor.read(cx).mouse_context_menu.is_none());
19568    });
19569}
19570
19571fn empty_range(row: usize, column: usize) -> Range<DisplayPoint> {
19572    let point = DisplayPoint::new(DisplayRow(row as u32), column as u32);
19573    point..point
19574}
19575
19576fn assert_selection_ranges(marked_text: &str, editor: &mut Editor, cx: &mut Context<Editor>) {
19577    let (text, ranges) = marked_text_ranges(marked_text, true);
19578    assert_eq!(editor.text(cx), text);
19579    assert_eq!(
19580        editor.selections.ranges(cx),
19581        ranges,
19582        "Assert selections are {}",
19583        marked_text
19584    );
19585}
19586
19587pub fn handle_signature_help_request(
19588    cx: &mut EditorLspTestContext,
19589    mocked_response: lsp::SignatureHelp,
19590) -> impl Future<Output = ()> + use<> {
19591    let mut request =
19592        cx.set_request_handler::<lsp::request::SignatureHelpRequest, _, _>(move |_, _, _| {
19593            let mocked_response = mocked_response.clone();
19594            async move { Ok(Some(mocked_response)) }
19595        });
19596
19597    async move {
19598        request.next().await;
19599    }
19600}
19601
19602/// Handle completion request passing a marked string specifying where the completion
19603/// should be triggered from using '|' character, what range should be replaced, and what completions
19604/// should be returned using '<' and '>' to delimit the range.
19605///
19606/// Also see `handle_completion_request_with_insert_and_replace`.
19607#[track_caller]
19608pub fn handle_completion_request(
19609    cx: &mut EditorLspTestContext,
19610    marked_string: &str,
19611    completions: Vec<&'static str>,
19612    counter: Arc<AtomicUsize>,
19613) -> impl Future<Output = ()> {
19614    let complete_from_marker: TextRangeMarker = '|'.into();
19615    let replace_range_marker: TextRangeMarker = ('<', '>').into();
19616    let (_, mut marked_ranges) = marked_text_ranges_by(
19617        marked_string,
19618        vec![complete_from_marker.clone(), replace_range_marker.clone()],
19619    );
19620
19621    let complete_from_position =
19622        cx.to_lsp(marked_ranges.remove(&complete_from_marker).unwrap()[0].start);
19623    let replace_range =
19624        cx.to_lsp_range(marked_ranges.remove(&replace_range_marker).unwrap()[0].clone());
19625
19626    let mut request =
19627        cx.set_request_handler::<lsp::request::Completion, _, _>(move |url, params, _| {
19628            let completions = completions.clone();
19629            counter.fetch_add(1, atomic::Ordering::Release);
19630            async move {
19631                assert_eq!(params.text_document_position.text_document.uri, url.clone());
19632                assert_eq!(
19633                    params.text_document_position.position,
19634                    complete_from_position
19635                );
19636                Ok(Some(lsp::CompletionResponse::Array(
19637                    completions
19638                        .iter()
19639                        .map(|completion_text| lsp::CompletionItem {
19640                            label: completion_text.to_string(),
19641                            text_edit: Some(lsp::CompletionTextEdit::Edit(lsp::TextEdit {
19642                                range: replace_range,
19643                                new_text: completion_text.to_string(),
19644                            })),
19645                            ..Default::default()
19646                        })
19647                        .collect(),
19648                )))
19649            }
19650        });
19651
19652    async move {
19653        request.next().await;
19654    }
19655}
19656
19657/// Similar to `handle_completion_request`, but a [`CompletionTextEdit::InsertAndReplace`] will be
19658/// given instead, which also contains an `insert` range.
19659///
19660/// This function uses the cursor position to mimic what Rust-Analyzer provides as the `insert` range,
19661/// that is, `replace_range.start..cursor_pos`.
19662pub fn handle_completion_request_with_insert_and_replace(
19663    cx: &mut EditorLspTestContext,
19664    marked_string: &str,
19665    completions: Vec<&'static str>,
19666    counter: Arc<AtomicUsize>,
19667) -> impl Future<Output = ()> {
19668    let complete_from_marker: TextRangeMarker = '|'.into();
19669    let replace_range_marker: TextRangeMarker = ('<', '>').into();
19670    let (_, mut marked_ranges) = marked_text_ranges_by(
19671        marked_string,
19672        vec![complete_from_marker.clone(), replace_range_marker.clone()],
19673    );
19674
19675    let complete_from_position =
19676        cx.to_lsp(marked_ranges.remove(&complete_from_marker).unwrap()[0].start);
19677    let replace_range =
19678        cx.to_lsp_range(marked_ranges.remove(&replace_range_marker).unwrap()[0].clone());
19679
19680    let mut request =
19681        cx.set_request_handler::<lsp::request::Completion, _, _>(move |url, params, _| {
19682            let completions = completions.clone();
19683            counter.fetch_add(1, atomic::Ordering::Release);
19684            async move {
19685                assert_eq!(params.text_document_position.text_document.uri, url.clone());
19686                assert_eq!(
19687                    params.text_document_position.position, complete_from_position,
19688                    "marker `|` position doesn't match",
19689                );
19690                Ok(Some(lsp::CompletionResponse::Array(
19691                    completions
19692                        .iter()
19693                        .map(|completion_text| lsp::CompletionItem {
19694                            label: completion_text.to_string(),
19695                            text_edit: Some(lsp::CompletionTextEdit::InsertAndReplace(
19696                                lsp::InsertReplaceEdit {
19697                                    insert: lsp::Range {
19698                                        start: replace_range.start,
19699                                        end: complete_from_position,
19700                                    },
19701                                    replace: replace_range,
19702                                    new_text: completion_text.to_string(),
19703                                },
19704                            )),
19705                            ..Default::default()
19706                        })
19707                        .collect(),
19708                )))
19709            }
19710        });
19711
19712    async move {
19713        request.next().await;
19714    }
19715}
19716
19717fn handle_resolve_completion_request(
19718    cx: &mut EditorLspTestContext,
19719    edits: Option<Vec<(&'static str, &'static str)>>,
19720) -> impl Future<Output = ()> {
19721    let edits = edits.map(|edits| {
19722        edits
19723            .iter()
19724            .map(|(marked_string, new_text)| {
19725                let (_, marked_ranges) = marked_text_ranges(marked_string, false);
19726                let replace_range = cx.to_lsp_range(marked_ranges[0].clone());
19727                lsp::TextEdit::new(replace_range, new_text.to_string())
19728            })
19729            .collect::<Vec<_>>()
19730    });
19731
19732    let mut request =
19733        cx.set_request_handler::<lsp::request::ResolveCompletionItem, _, _>(move |_, _, _| {
19734            let edits = edits.clone();
19735            async move {
19736                Ok(lsp::CompletionItem {
19737                    additional_text_edits: edits,
19738                    ..Default::default()
19739                })
19740            }
19741        });
19742
19743    async move {
19744        request.next().await;
19745    }
19746}
19747
19748pub(crate) fn update_test_language_settings(
19749    cx: &mut TestAppContext,
19750    f: impl Fn(&mut AllLanguageSettingsContent),
19751) {
19752    cx.update(|cx| {
19753        SettingsStore::update_global(cx, |store, cx| {
19754            store.update_user_settings::<AllLanguageSettings>(cx, f);
19755        });
19756    });
19757}
19758
19759pub(crate) fn update_test_project_settings(
19760    cx: &mut TestAppContext,
19761    f: impl Fn(&mut ProjectSettings),
19762) {
19763    cx.update(|cx| {
19764        SettingsStore::update_global(cx, |store, cx| {
19765            store.update_user_settings::<ProjectSettings>(cx, f);
19766        });
19767    });
19768}
19769
19770pub(crate) fn init_test(cx: &mut TestAppContext, f: fn(&mut AllLanguageSettingsContent)) {
19771    cx.update(|cx| {
19772        assets::Assets.load_test_fonts(cx);
19773        let store = SettingsStore::test(cx);
19774        cx.set_global(store);
19775        theme::init(theme::LoadThemes::JustBase, cx);
19776        release_channel::init(SemanticVersion::default(), cx);
19777        client::init_settings(cx);
19778        language::init(cx);
19779        Project::init_settings(cx);
19780        workspace::init_settings(cx);
19781        crate::init(cx);
19782    });
19783
19784    update_test_language_settings(cx, f);
19785}
19786
19787#[track_caller]
19788fn assert_hunk_revert(
19789    not_reverted_text_with_selections: &str,
19790    expected_hunk_statuses_before: Vec<DiffHunkStatusKind>,
19791    expected_reverted_text_with_selections: &str,
19792    base_text: &str,
19793    cx: &mut EditorLspTestContext,
19794) {
19795    cx.set_state(not_reverted_text_with_selections);
19796    cx.set_head_text(base_text);
19797    cx.executor().run_until_parked();
19798
19799    let actual_hunk_statuses_before = cx.update_editor(|editor, window, cx| {
19800        let snapshot = editor.snapshot(window, cx);
19801        let reverted_hunk_statuses = snapshot
19802            .buffer_snapshot
19803            .diff_hunks_in_range(0..snapshot.buffer_snapshot.len())
19804            .map(|hunk| hunk.status().kind)
19805            .collect::<Vec<_>>();
19806
19807        editor.git_restore(&Default::default(), window, cx);
19808        reverted_hunk_statuses
19809    });
19810    cx.executor().run_until_parked();
19811    cx.assert_editor_state(expected_reverted_text_with_selections);
19812    assert_eq!(actual_hunk_statuses_before, expected_hunk_statuses_before);
19813}