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, SemanticVersion, TestAppContext, UpdateGlobal, VisualTestContext,
   16    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
 5126#[gpui::test]
 5127async fn test_paste_multiline(cx: &mut TestAppContext) {
 5128    init_test(cx, |_| {});
 5129
 5130    let mut cx = EditorTestContext::new(cx).await;
 5131    cx.update_buffer(|buffer, cx| buffer.set_language(Some(rust_lang()), cx));
 5132
 5133    // Cut an indented block, without the leading whitespace.
 5134    cx.set_state(indoc! {"
 5135        const a: B = (
 5136            c(),
 5137            «d(
 5138                e,
 5139                f
 5140            )ˇ»
 5141        );
 5142    "});
 5143    cx.update_editor(|e, window, cx| e.cut(&Cut, window, cx));
 5144    cx.assert_editor_state(indoc! {"
 5145        const a: B = (
 5146            c(),
 5147            ˇ
 5148        );
 5149    "});
 5150
 5151    // Paste it at the same position.
 5152    cx.update_editor(|e, window, cx| e.paste(&Paste, window, cx));
 5153    cx.assert_editor_state(indoc! {"
 5154        const a: B = (
 5155            c(),
 5156            d(
 5157                e,
 5158                f
 5159 5160        );
 5161    "});
 5162
 5163    // Paste it at a line with a lower indent level.
 5164    cx.set_state(indoc! {"
 5165        ˇ
 5166        const a: B = (
 5167            c(),
 5168        );
 5169    "});
 5170    cx.update_editor(|e, window, cx| e.paste(&Paste, window, cx));
 5171    cx.assert_editor_state(indoc! {"
 5172        d(
 5173            e,
 5174            f
 5175 5176        const a: B = (
 5177            c(),
 5178        );
 5179    "});
 5180
 5181    // Cut an indented block, with the leading whitespace.
 5182    cx.set_state(indoc! {"
 5183        const a: B = (
 5184            c(),
 5185        «    d(
 5186                e,
 5187                f
 5188            )
 5189        ˇ»);
 5190    "});
 5191    cx.update_editor(|e, window, cx| e.cut(&Cut, window, cx));
 5192    cx.assert_editor_state(indoc! {"
 5193        const a: B = (
 5194            c(),
 5195        ˇ);
 5196    "});
 5197
 5198    // Paste it at the same position.
 5199    cx.update_editor(|e, window, cx| e.paste(&Paste, window, cx));
 5200    cx.assert_editor_state(indoc! {"
 5201        const a: B = (
 5202            c(),
 5203            d(
 5204                e,
 5205                f
 5206            )
 5207        ˇ);
 5208    "});
 5209
 5210    // Paste it at a line with a higher indent level.
 5211    cx.set_state(indoc! {"
 5212        const a: B = (
 5213            c(),
 5214            d(
 5215                e,
 5216 5217            )
 5218        );
 5219    "});
 5220    cx.update_editor(|e, window, cx| e.paste(&Paste, window, cx));
 5221    cx.assert_editor_state(indoc! {"
 5222        const a: B = (
 5223            c(),
 5224            d(
 5225                e,
 5226                f    d(
 5227                    e,
 5228                    f
 5229                )
 5230        ˇ
 5231            )
 5232        );
 5233    "});
 5234
 5235    // Copy an indented block, starting mid-line
 5236    cx.set_state(indoc! {"
 5237        const a: B = (
 5238            c(),
 5239            somethin«g(
 5240                e,
 5241                f
 5242            )ˇ»
 5243        );
 5244    "});
 5245    cx.update_editor(|e, window, cx| e.copy(&Copy, window, cx));
 5246
 5247    // Paste it on a line with a lower indent level
 5248    cx.update_editor(|e, window, cx| e.move_to_end(&Default::default(), window, cx));
 5249    cx.update_editor(|e, window, cx| e.paste(&Paste, window, cx));
 5250    cx.assert_editor_state(indoc! {"
 5251        const a: B = (
 5252            c(),
 5253            something(
 5254                e,
 5255                f
 5256            )
 5257        );
 5258        g(
 5259            e,
 5260            f
 5261"});
 5262}
 5263
 5264#[gpui::test]
 5265async fn test_paste_content_from_other_app(cx: &mut TestAppContext) {
 5266    init_test(cx, |_| {});
 5267
 5268    cx.write_to_clipboard(ClipboardItem::new_string(
 5269        "    d(\n        e\n    );\n".into(),
 5270    ));
 5271
 5272    let mut cx = EditorTestContext::new(cx).await;
 5273    cx.update_buffer(|buffer, cx| buffer.set_language(Some(rust_lang()), cx));
 5274
 5275    cx.set_state(indoc! {"
 5276        fn a() {
 5277            b();
 5278            if c() {
 5279                ˇ
 5280            }
 5281        }
 5282    "});
 5283
 5284    cx.update_editor(|e, window, cx| e.paste(&Paste, window, cx));
 5285    cx.assert_editor_state(indoc! {"
 5286        fn a() {
 5287            b();
 5288            if c() {
 5289                d(
 5290                    e
 5291                );
 5292        ˇ
 5293            }
 5294        }
 5295    "});
 5296
 5297    cx.set_state(indoc! {"
 5298        fn a() {
 5299            b();
 5300            ˇ
 5301        }
 5302    "});
 5303
 5304    cx.update_editor(|e, window, cx| e.paste(&Paste, window, cx));
 5305    cx.assert_editor_state(indoc! {"
 5306        fn a() {
 5307            b();
 5308            d(
 5309                e
 5310            );
 5311        ˇ
 5312        }
 5313    "});
 5314}
 5315
 5316#[gpui::test]
 5317fn test_select_all(cx: &mut TestAppContext) {
 5318    init_test(cx, |_| {});
 5319
 5320    let editor = cx.add_window(|window, cx| {
 5321        let buffer = MultiBuffer::build_simple("abc\nde\nfgh", cx);
 5322        build_editor(buffer, window, cx)
 5323    });
 5324    _ = editor.update(cx, |editor, window, cx| {
 5325        editor.select_all(&SelectAll, window, cx);
 5326        assert_eq!(
 5327            editor.selections.display_ranges(cx),
 5328            &[DisplayPoint::new(DisplayRow(0), 0)..DisplayPoint::new(DisplayRow(2), 3)]
 5329        );
 5330    });
 5331}
 5332
 5333#[gpui::test]
 5334fn test_select_line(cx: &mut TestAppContext) {
 5335    init_test(cx, |_| {});
 5336
 5337    let editor = cx.add_window(|window, cx| {
 5338        let buffer = MultiBuffer::build_simple(&sample_text(6, 5, 'a'), cx);
 5339        build_editor(buffer, window, cx)
 5340    });
 5341    _ = editor.update(cx, |editor, window, cx| {
 5342        editor.change_selections(None, window, cx, |s| {
 5343            s.select_display_ranges([
 5344                DisplayPoint::new(DisplayRow(0), 0)..DisplayPoint::new(DisplayRow(0), 1),
 5345                DisplayPoint::new(DisplayRow(0), 2)..DisplayPoint::new(DisplayRow(0), 2),
 5346                DisplayPoint::new(DisplayRow(1), 0)..DisplayPoint::new(DisplayRow(1), 0),
 5347                DisplayPoint::new(DisplayRow(4), 2)..DisplayPoint::new(DisplayRow(4), 2),
 5348            ])
 5349        });
 5350        editor.select_line(&SelectLine, window, cx);
 5351        assert_eq!(
 5352            editor.selections.display_ranges(cx),
 5353            vec![
 5354                DisplayPoint::new(DisplayRow(0), 0)..DisplayPoint::new(DisplayRow(2), 0),
 5355                DisplayPoint::new(DisplayRow(4), 0)..DisplayPoint::new(DisplayRow(5), 0),
 5356            ]
 5357        );
 5358    });
 5359
 5360    _ = editor.update(cx, |editor, window, cx| {
 5361        editor.select_line(&SelectLine, window, cx);
 5362        assert_eq!(
 5363            editor.selections.display_ranges(cx),
 5364            vec![
 5365                DisplayPoint::new(DisplayRow(0), 0)..DisplayPoint::new(DisplayRow(3), 0),
 5366                DisplayPoint::new(DisplayRow(4), 0)..DisplayPoint::new(DisplayRow(5), 5),
 5367            ]
 5368        );
 5369    });
 5370
 5371    _ = editor.update(cx, |editor, window, cx| {
 5372        editor.select_line(&SelectLine, window, cx);
 5373        assert_eq!(
 5374            editor.selections.display_ranges(cx),
 5375            vec![DisplayPoint::new(DisplayRow(0), 0)..DisplayPoint::new(DisplayRow(5), 5)]
 5376        );
 5377    });
 5378}
 5379
 5380#[gpui::test]
 5381async fn test_split_selection_into_lines(cx: &mut TestAppContext) {
 5382    init_test(cx, |_| {});
 5383    let mut cx = EditorTestContext::new(cx).await;
 5384
 5385    #[track_caller]
 5386    fn test(cx: &mut EditorTestContext, initial_state: &'static str, expected_state: &'static str) {
 5387        cx.set_state(initial_state);
 5388        cx.update_editor(|e, window, cx| {
 5389            e.split_selection_into_lines(&SplitSelectionIntoLines, window, cx)
 5390        });
 5391        cx.assert_editor_state(expected_state);
 5392    }
 5393
 5394    // Selection starts and ends at the middle of lines, left-to-right
 5395    test(
 5396        &mut cx,
 5397        "aa\nb«ˇb\ncc\ndd\ne»e\nff",
 5398        "aa\nbbˇ\nccˇ\nddˇ\neˇe\nff",
 5399    );
 5400    // Same thing, right-to-left
 5401    test(
 5402        &mut cx,
 5403        "aa\nb«b\ncc\ndd\neˇ»e\nff",
 5404        "aa\nbbˇ\nccˇ\nddˇ\neˇe\nff",
 5405    );
 5406
 5407    // Whole buffer, left-to-right, last line *doesn't* end with newline
 5408    test(
 5409        &mut cx,
 5410        "«ˇaa\nbb\ncc\ndd\nee\nff»",
 5411        "aaˇ\nbbˇ\nccˇ\nddˇ\neeˇ\nffˇ",
 5412    );
 5413    // Same thing, right-to-left
 5414    test(
 5415        &mut cx,
 5416        "«aa\nbb\ncc\ndd\nee\nffˇ»",
 5417        "aaˇ\nbbˇ\nccˇ\nddˇ\neeˇ\nffˇ",
 5418    );
 5419
 5420    // Whole buffer, left-to-right, last line ends with newline
 5421    test(
 5422        &mut cx,
 5423        "«ˇaa\nbb\ncc\ndd\nee\nff\n»",
 5424        "aaˇ\nbbˇ\nccˇ\nddˇ\neeˇ\nffˇ\n",
 5425    );
 5426    // Same thing, right-to-left
 5427    test(
 5428        &mut cx,
 5429        "«aa\nbb\ncc\ndd\nee\nff\nˇ»",
 5430        "aaˇ\nbbˇ\nccˇ\nddˇ\neeˇ\nffˇ\n",
 5431    );
 5432
 5433    // Starts at the end of a line, ends at the start of another
 5434    test(
 5435        &mut cx,
 5436        "aa\nbb«ˇ\ncc\ndd\nee\n»ff\n",
 5437        "aa\nbbˇ\nccˇ\nddˇ\neeˇ\nff\n",
 5438    );
 5439}
 5440
 5441#[gpui::test]
 5442async fn test_split_selection_into_lines_interacting_with_creases(cx: &mut TestAppContext) {
 5443    init_test(cx, |_| {});
 5444
 5445    let editor = cx.add_window(|window, cx| {
 5446        let buffer = MultiBuffer::build_simple(&sample_text(9, 5, 'a'), cx);
 5447        build_editor(buffer, window, cx)
 5448    });
 5449
 5450    // setup
 5451    _ = editor.update(cx, |editor, window, cx| {
 5452        editor.fold_creases(
 5453            vec![
 5454                Crease::simple(Point::new(0, 2)..Point::new(1, 2), FoldPlaceholder::test()),
 5455                Crease::simple(Point::new(2, 3)..Point::new(4, 1), FoldPlaceholder::test()),
 5456                Crease::simple(Point::new(7, 0)..Point::new(8, 4), FoldPlaceholder::test()),
 5457            ],
 5458            true,
 5459            window,
 5460            cx,
 5461        );
 5462        assert_eq!(
 5463            editor.display_text(cx),
 5464            "aa⋯bbb\nccc⋯eeee\nfffff\nggggg\n⋯i"
 5465        );
 5466    });
 5467
 5468    _ = editor.update(cx, |editor, window, cx| {
 5469        editor.change_selections(None, window, cx, |s| {
 5470            s.select_display_ranges([
 5471                DisplayPoint::new(DisplayRow(0), 0)..DisplayPoint::new(DisplayRow(0), 1),
 5472                DisplayPoint::new(DisplayRow(0), 2)..DisplayPoint::new(DisplayRow(0), 2),
 5473                DisplayPoint::new(DisplayRow(1), 0)..DisplayPoint::new(DisplayRow(1), 0),
 5474                DisplayPoint::new(DisplayRow(4), 4)..DisplayPoint::new(DisplayRow(4), 4),
 5475            ])
 5476        });
 5477        editor.split_selection_into_lines(&SplitSelectionIntoLines, window, cx);
 5478        assert_eq!(
 5479            editor.display_text(cx),
 5480            "aaaaa\nbbbbb\nccc⋯eeee\nfffff\nggggg\n⋯i"
 5481        );
 5482    });
 5483    EditorTestContext::for_editor(editor, cx)
 5484        .await
 5485        .assert_editor_state("aˇaˇaaa\nbbbbb\nˇccccc\nddddd\neeeee\nfffff\nggggg\nhhhhh\niiiiiˇ");
 5486
 5487    _ = editor.update(cx, |editor, window, cx| {
 5488        editor.change_selections(None, window, cx, |s| {
 5489            s.select_display_ranges([
 5490                DisplayPoint::new(DisplayRow(5), 0)..DisplayPoint::new(DisplayRow(0), 1)
 5491            ])
 5492        });
 5493        editor.split_selection_into_lines(&SplitSelectionIntoLines, window, cx);
 5494        assert_eq!(
 5495            editor.display_text(cx),
 5496            "aaaaa\nbbbbb\nccccc\nddddd\neeeee\nfffff\nggggg\nhhhhh\niiiii"
 5497        );
 5498        assert_eq!(
 5499            editor.selections.display_ranges(cx),
 5500            [
 5501                DisplayPoint::new(DisplayRow(0), 5)..DisplayPoint::new(DisplayRow(0), 5),
 5502                DisplayPoint::new(DisplayRow(1), 5)..DisplayPoint::new(DisplayRow(1), 5),
 5503                DisplayPoint::new(DisplayRow(2), 5)..DisplayPoint::new(DisplayRow(2), 5),
 5504                DisplayPoint::new(DisplayRow(3), 5)..DisplayPoint::new(DisplayRow(3), 5),
 5505                DisplayPoint::new(DisplayRow(4), 5)..DisplayPoint::new(DisplayRow(4), 5),
 5506                DisplayPoint::new(DisplayRow(5), 5)..DisplayPoint::new(DisplayRow(5), 5),
 5507                DisplayPoint::new(DisplayRow(6), 5)..DisplayPoint::new(DisplayRow(6), 5)
 5508            ]
 5509        );
 5510    });
 5511    EditorTestContext::for_editor(editor, cx)
 5512        .await
 5513        .assert_editor_state(
 5514            "aaaaaˇ\nbbbbbˇ\ncccccˇ\ndddddˇ\neeeeeˇ\nfffffˇ\ngggggˇ\nhhhhh\niiiii",
 5515        );
 5516}
 5517
 5518#[gpui::test]
 5519async fn test_add_selection_above_below(cx: &mut TestAppContext) {
 5520    init_test(cx, |_| {});
 5521
 5522    let mut cx = EditorTestContext::new(cx).await;
 5523
 5524    cx.set_state(indoc!(
 5525        r#"abc
 5526           defˇghi
 5527
 5528           jk
 5529           nlmo
 5530           "#
 5531    ));
 5532
 5533    cx.update_editor(|editor, window, cx| {
 5534        editor.add_selection_above(&Default::default(), window, cx);
 5535    });
 5536
 5537    cx.assert_editor_state(indoc!(
 5538        r#"abcˇ
 5539           defˇghi
 5540
 5541           jk
 5542           nlmo
 5543           "#
 5544    ));
 5545
 5546    cx.update_editor(|editor, window, cx| {
 5547        editor.add_selection_above(&Default::default(), window, cx);
 5548    });
 5549
 5550    cx.assert_editor_state(indoc!(
 5551        r#"abcˇ
 5552            defˇghi
 5553
 5554            jk
 5555            nlmo
 5556            "#
 5557    ));
 5558
 5559    cx.update_editor(|editor, window, cx| {
 5560        editor.add_selection_below(&Default::default(), window, cx);
 5561    });
 5562
 5563    cx.assert_editor_state(indoc!(
 5564        r#"abc
 5565           defˇghi
 5566
 5567           jk
 5568           nlmo
 5569           "#
 5570    ));
 5571
 5572    cx.update_editor(|editor, window, cx| {
 5573        editor.undo_selection(&Default::default(), window, cx);
 5574    });
 5575
 5576    cx.assert_editor_state(indoc!(
 5577        r#"abcˇ
 5578           defˇghi
 5579
 5580           jk
 5581           nlmo
 5582           "#
 5583    ));
 5584
 5585    cx.update_editor(|editor, window, cx| {
 5586        editor.redo_selection(&Default::default(), window, cx);
 5587    });
 5588
 5589    cx.assert_editor_state(indoc!(
 5590        r#"abc
 5591           defˇghi
 5592
 5593           jk
 5594           nlmo
 5595           "#
 5596    ));
 5597
 5598    cx.update_editor(|editor, window, cx| {
 5599        editor.add_selection_below(&Default::default(), window, cx);
 5600    });
 5601
 5602    cx.assert_editor_state(indoc!(
 5603        r#"abc
 5604           defˇghi
 5605
 5606           jk
 5607           nlmˇo
 5608           "#
 5609    ));
 5610
 5611    cx.update_editor(|editor, window, cx| {
 5612        editor.add_selection_below(&Default::default(), window, cx);
 5613    });
 5614
 5615    cx.assert_editor_state(indoc!(
 5616        r#"abc
 5617           defˇghi
 5618
 5619           jk
 5620           nlmˇo
 5621           "#
 5622    ));
 5623
 5624    // change selections
 5625    cx.set_state(indoc!(
 5626        r#"abc
 5627           def«ˇg»hi
 5628
 5629           jk
 5630           nlmo
 5631           "#
 5632    ));
 5633
 5634    cx.update_editor(|editor, window, cx| {
 5635        editor.add_selection_below(&Default::default(), window, cx);
 5636    });
 5637
 5638    cx.assert_editor_state(indoc!(
 5639        r#"abc
 5640           def«ˇg»hi
 5641
 5642           jk
 5643           nlm«ˇo»
 5644           "#
 5645    ));
 5646
 5647    cx.update_editor(|editor, window, cx| {
 5648        editor.add_selection_below(&Default::default(), window, cx);
 5649    });
 5650
 5651    cx.assert_editor_state(indoc!(
 5652        r#"abc
 5653           def«ˇg»hi
 5654
 5655           jk
 5656           nlm«ˇo»
 5657           "#
 5658    ));
 5659
 5660    cx.update_editor(|editor, window, cx| {
 5661        editor.add_selection_above(&Default::default(), window, cx);
 5662    });
 5663
 5664    cx.assert_editor_state(indoc!(
 5665        r#"abc
 5666           def«ˇg»hi
 5667
 5668           jk
 5669           nlmo
 5670           "#
 5671    ));
 5672
 5673    cx.update_editor(|editor, window, cx| {
 5674        editor.add_selection_above(&Default::default(), window, cx);
 5675    });
 5676
 5677    cx.assert_editor_state(indoc!(
 5678        r#"abc
 5679           def«ˇg»hi
 5680
 5681           jk
 5682           nlmo
 5683           "#
 5684    ));
 5685
 5686    // Change selections again
 5687    cx.set_state(indoc!(
 5688        r#"a«bc
 5689           defgˇ»hi
 5690
 5691           jk
 5692           nlmo
 5693           "#
 5694    ));
 5695
 5696    cx.update_editor(|editor, window, cx| {
 5697        editor.add_selection_below(&Default::default(), window, cx);
 5698    });
 5699
 5700    cx.assert_editor_state(indoc!(
 5701        r#"a«bcˇ»
 5702           d«efgˇ»hi
 5703
 5704           j«kˇ»
 5705           nlmo
 5706           "#
 5707    ));
 5708
 5709    cx.update_editor(|editor, window, cx| {
 5710        editor.add_selection_below(&Default::default(), window, cx);
 5711    });
 5712    cx.assert_editor_state(indoc!(
 5713        r#"a«bcˇ»
 5714           d«efgˇ»hi
 5715
 5716           j«kˇ»
 5717           n«lmoˇ»
 5718           "#
 5719    ));
 5720    cx.update_editor(|editor, window, cx| {
 5721        editor.add_selection_above(&Default::default(), window, cx);
 5722    });
 5723
 5724    cx.assert_editor_state(indoc!(
 5725        r#"a«bcˇ»
 5726           d«efgˇ»hi
 5727
 5728           j«kˇ»
 5729           nlmo
 5730           "#
 5731    ));
 5732
 5733    // Change selections again
 5734    cx.set_state(indoc!(
 5735        r#"abc
 5736           d«ˇefghi
 5737
 5738           jk
 5739           nlm»o
 5740           "#
 5741    ));
 5742
 5743    cx.update_editor(|editor, window, cx| {
 5744        editor.add_selection_above(&Default::default(), window, cx);
 5745    });
 5746
 5747    cx.assert_editor_state(indoc!(
 5748        r#"a«ˇbc»
 5749           d«ˇef»ghi
 5750
 5751           j«ˇk»
 5752           n«ˇlm»o
 5753           "#
 5754    ));
 5755
 5756    cx.update_editor(|editor, window, cx| {
 5757        editor.add_selection_below(&Default::default(), window, cx);
 5758    });
 5759
 5760    cx.assert_editor_state(indoc!(
 5761        r#"abc
 5762           d«ˇef»ghi
 5763
 5764           j«ˇk»
 5765           n«ˇlm»o
 5766           "#
 5767    ));
 5768}
 5769
 5770#[gpui::test]
 5771async fn test_select_next(cx: &mut TestAppContext) {
 5772    init_test(cx, |_| {});
 5773
 5774    let mut cx = EditorTestContext::new(cx).await;
 5775    cx.set_state("abc\nˇabc abc\ndefabc\nabc");
 5776
 5777    cx.update_editor(|e, window, cx| e.select_next(&SelectNext::default(), window, cx))
 5778        .unwrap();
 5779    cx.assert_editor_state("abc\n«abcˇ» abc\ndefabc\nabc");
 5780
 5781    cx.update_editor(|e, window, cx| e.select_next(&SelectNext::default(), window, cx))
 5782        .unwrap();
 5783    cx.assert_editor_state("abc\n«abcˇ» «abcˇ»\ndefabc\nabc");
 5784
 5785    cx.update_editor(|editor, window, cx| editor.undo_selection(&UndoSelection, window, cx));
 5786    cx.assert_editor_state("abc\n«abcˇ» abc\ndefabc\nabc");
 5787
 5788    cx.update_editor(|editor, window, cx| editor.redo_selection(&RedoSelection, window, cx));
 5789    cx.assert_editor_state("abc\n«abcˇ» «abcˇ»\ndefabc\nabc");
 5790
 5791    cx.update_editor(|e, window, cx| e.select_next(&SelectNext::default(), window, cx))
 5792        .unwrap();
 5793    cx.assert_editor_state("abc\n«abcˇ» «abcˇ»\ndefabc\n«abcˇ»");
 5794
 5795    cx.update_editor(|e, window, cx| e.select_next(&SelectNext::default(), window, cx))
 5796        .unwrap();
 5797    cx.assert_editor_state("«abcˇ»\n«abcˇ» «abcˇ»\ndefabc\n«abcˇ»");
 5798}
 5799
 5800#[gpui::test]
 5801async fn test_select_all_matches(cx: &mut TestAppContext) {
 5802    init_test(cx, |_| {});
 5803
 5804    let mut cx = EditorTestContext::new(cx).await;
 5805
 5806    // Test caret-only selections
 5807    cx.set_state("abc\nˇabc abc\ndefabc\nabc");
 5808    cx.update_editor(|e, window, cx| e.select_all_matches(&SelectAllMatches, window, cx))
 5809        .unwrap();
 5810    cx.assert_editor_state("«abcˇ»\n«abcˇ» «abcˇ»\ndefabc\n«abcˇ»");
 5811
 5812    // Test left-to-right selections
 5813    cx.set_state("abc\n«abcˇ»\nabc");
 5814    cx.update_editor(|e, window, cx| e.select_all_matches(&SelectAllMatches, window, cx))
 5815        .unwrap();
 5816    cx.assert_editor_state("«abcˇ»\n«abcˇ»\n«abcˇ»");
 5817
 5818    // Test right-to-left selections
 5819    cx.set_state("abc\n«ˇabc»\nabc");
 5820    cx.update_editor(|e, window, cx| e.select_all_matches(&SelectAllMatches, window, cx))
 5821        .unwrap();
 5822    cx.assert_editor_state("«ˇabc»\n«ˇabc»\n«ˇabc»");
 5823
 5824    // Test selecting whitespace with caret selection
 5825    cx.set_state("abc\nˇ   abc\nabc");
 5826    cx.update_editor(|e, window, cx| e.select_all_matches(&SelectAllMatches, window, cx))
 5827        .unwrap();
 5828    cx.assert_editor_state("abc\n«   ˇ»abc\nabc");
 5829
 5830    // Test selecting whitespace with left-to-right selection
 5831    cx.set_state("abc\n«ˇ  »abc\nabc");
 5832    cx.update_editor(|e, window, cx| e.select_all_matches(&SelectAllMatches, window, cx))
 5833        .unwrap();
 5834    cx.assert_editor_state("abc\n«ˇ  »abc\nabc");
 5835
 5836    // Test no matches with right-to-left selection
 5837    cx.set_state("abc\n«  ˇ»abc\nabc");
 5838    cx.update_editor(|e, window, cx| e.select_all_matches(&SelectAllMatches, window, cx))
 5839        .unwrap();
 5840    cx.assert_editor_state("abc\n«  ˇ»abc\nabc");
 5841}
 5842
 5843#[gpui::test]
 5844async fn test_select_all_matches_does_not_scroll(cx: &mut TestAppContext) {
 5845    init_test(cx, |_| {});
 5846
 5847    let mut cx = EditorTestContext::new(cx).await;
 5848
 5849    let large_body_1 = "\nd".repeat(200);
 5850    let large_body_2 = "\ne".repeat(200);
 5851
 5852    cx.set_state(&format!(
 5853        "abc\nabc{large_body_1} «ˇa»bc{large_body_2}\nefabc\nabc"
 5854    ));
 5855    let initial_scroll_position = cx.update_editor(|editor, _, cx| {
 5856        let scroll_position = editor.scroll_position(cx);
 5857        assert!(scroll_position.y > 0.0, "Initial selection is between two large bodies and should have the editor scrolled to it");
 5858        scroll_position
 5859    });
 5860
 5861    cx.update_editor(|e, window, cx| e.select_all_matches(&SelectAllMatches, window, cx))
 5862        .unwrap();
 5863    cx.assert_editor_state(&format!(
 5864        "«ˇa»bc\n«ˇa»bc{large_body_1} «ˇa»bc{large_body_2}\nef«ˇa»bc\n«ˇa»bc"
 5865    ));
 5866    let scroll_position_after_selection =
 5867        cx.update_editor(|editor, _, cx| editor.scroll_position(cx));
 5868    assert_eq!(
 5869        initial_scroll_position, scroll_position_after_selection,
 5870        "Scroll position should not change after selecting all matches"
 5871    );
 5872}
 5873
 5874#[gpui::test]
 5875async fn test_undo_format_scrolls_to_last_edit_pos(cx: &mut TestAppContext) {
 5876    init_test(cx, |_| {});
 5877
 5878    let mut cx = EditorLspTestContext::new_rust(
 5879        lsp::ServerCapabilities {
 5880            document_formatting_provider: Some(lsp::OneOf::Left(true)),
 5881            ..Default::default()
 5882        },
 5883        cx,
 5884    )
 5885    .await;
 5886
 5887    cx.set_state(indoc! {"
 5888        line 1
 5889        line 2
 5890        linˇe 3
 5891        line 4
 5892        line 5
 5893    "});
 5894
 5895    // Make an edit
 5896    cx.update_editor(|editor, window, cx| {
 5897        editor.handle_input("X", window, cx);
 5898    });
 5899
 5900    // Move cursor to a different position
 5901    cx.update_editor(|editor, window, cx| {
 5902        editor.change_selections(None, window, cx, |s| {
 5903            s.select_ranges([Point::new(4, 2)..Point::new(4, 2)]);
 5904        });
 5905    });
 5906
 5907    cx.assert_editor_state(indoc! {"
 5908        line 1
 5909        line 2
 5910        linXe 3
 5911        line 4
 5912        liˇne 5
 5913    "});
 5914
 5915    cx.lsp
 5916        .set_request_handler::<lsp::request::Formatting, _, _>(move |_, _| async move {
 5917            Ok(Some(vec![lsp::TextEdit::new(
 5918                lsp::Range::new(lsp::Position::new(0, 0), lsp::Position::new(0, 0)),
 5919                "PREFIX ".to_string(),
 5920            )]))
 5921        });
 5922
 5923    cx.update_editor(|editor, window, cx| editor.format(&Default::default(), window, cx))
 5924        .unwrap()
 5925        .await
 5926        .unwrap();
 5927
 5928    cx.assert_editor_state(indoc! {"
 5929        PREFIX line 1
 5930        line 2
 5931        linXe 3
 5932        line 4
 5933        liˇne 5
 5934    "});
 5935
 5936    // Undo formatting
 5937    cx.update_editor(|editor, window, cx| {
 5938        editor.undo(&Default::default(), window, cx);
 5939    });
 5940
 5941    // Verify cursor moved back to position after edit
 5942    cx.assert_editor_state(indoc! {"
 5943        line 1
 5944        line 2
 5945        linXˇe 3
 5946        line 4
 5947        line 5
 5948    "});
 5949}
 5950
 5951#[gpui::test]
 5952async fn test_select_next_with_multiple_carets(cx: &mut TestAppContext) {
 5953    init_test(cx, |_| {});
 5954
 5955    let mut cx = EditorTestContext::new(cx).await;
 5956    cx.set_state(
 5957        r#"let foo = 2;
 5958lˇet foo = 2;
 5959let fooˇ = 2;
 5960let foo = 2;
 5961let foo = ˇ2;"#,
 5962    );
 5963
 5964    cx.update_editor(|e, window, cx| e.select_next(&SelectNext::default(), window, cx))
 5965        .unwrap();
 5966    cx.assert_editor_state(
 5967        r#"let foo = 2;
 5968«letˇ» foo = 2;
 5969let «fooˇ» = 2;
 5970let foo = 2;
 5971let foo = «2ˇ»;"#,
 5972    );
 5973
 5974    // noop for multiple selections with different contents
 5975    cx.update_editor(|e, window, cx| e.select_next(&SelectNext::default(), window, cx))
 5976        .unwrap();
 5977    cx.assert_editor_state(
 5978        r#"let foo = 2;
 5979«letˇ» foo = 2;
 5980let «fooˇ» = 2;
 5981let foo = 2;
 5982let foo = «2ˇ»;"#,
 5983    );
 5984}
 5985
 5986#[gpui::test]
 5987async fn test_select_previous_multibuffer(cx: &mut TestAppContext) {
 5988    init_test(cx, |_| {});
 5989
 5990    let mut cx =
 5991        EditorTestContext::new_multibuffer(cx, ["aaa\n«bbb\nccc\n»ddd", "aaa\n«bbb\nccc\n»ddd"]);
 5992
 5993    cx.assert_editor_state(indoc! {"
 5994        ˇbbb
 5995        ccc
 5996
 5997        bbb
 5998        ccc
 5999        "});
 6000    cx.dispatch_action(SelectPrevious::default());
 6001    cx.assert_editor_state(indoc! {"
 6002                «bbbˇ»
 6003                ccc
 6004
 6005                bbb
 6006                ccc
 6007                "});
 6008    cx.dispatch_action(SelectPrevious::default());
 6009    cx.assert_editor_state(indoc! {"
 6010                «bbbˇ»
 6011                ccc
 6012
 6013                «bbbˇ»
 6014                ccc
 6015                "});
 6016}
 6017
 6018#[gpui::test]
 6019async fn test_select_previous_with_single_caret(cx: &mut TestAppContext) {
 6020    init_test(cx, |_| {});
 6021
 6022    let mut cx = EditorTestContext::new(cx).await;
 6023    cx.set_state("abc\nˇabc abc\ndefabc\nabc");
 6024
 6025    cx.update_editor(|e, window, cx| e.select_previous(&SelectPrevious::default(), window, cx))
 6026        .unwrap();
 6027    cx.assert_editor_state("abc\n«abcˇ» abc\ndefabc\nabc");
 6028
 6029    cx.update_editor(|e, window, cx| e.select_previous(&SelectPrevious::default(), window, cx))
 6030        .unwrap();
 6031    cx.assert_editor_state("«abcˇ»\n«abcˇ» abc\ndefabc\nabc");
 6032
 6033    cx.update_editor(|editor, window, cx| editor.undo_selection(&UndoSelection, window, cx));
 6034    cx.assert_editor_state("abc\n«abcˇ» abc\ndefabc\nabc");
 6035
 6036    cx.update_editor(|editor, window, cx| editor.redo_selection(&RedoSelection, window, cx));
 6037    cx.assert_editor_state("«abcˇ»\n«abcˇ» abc\ndefabc\nabc");
 6038
 6039    cx.update_editor(|e, window, cx| e.select_previous(&SelectPrevious::default(), window, cx))
 6040        .unwrap();
 6041    cx.assert_editor_state("«abcˇ»\n«abcˇ» abc\ndefabc\n«abcˇ»");
 6042
 6043    cx.update_editor(|e, window, cx| e.select_previous(&SelectPrevious::default(), window, cx))
 6044        .unwrap();
 6045    cx.assert_editor_state("«abcˇ»\n«abcˇ» abc\ndef«abcˇ»\n«abcˇ»");
 6046
 6047    cx.update_editor(|e, window, cx| e.select_previous(&SelectPrevious::default(), window, cx))
 6048        .unwrap();
 6049    cx.assert_editor_state("«abcˇ»\n«abcˇ» «abcˇ»\ndef«abcˇ»\n«abcˇ»");
 6050}
 6051
 6052#[gpui::test]
 6053async fn test_select_previous_empty_buffer(cx: &mut TestAppContext) {
 6054    init_test(cx, |_| {});
 6055
 6056    let mut cx = EditorTestContext::new(cx).await;
 6057    cx.set_state("");
 6058
 6059    cx.update_editor(|e, window, cx| e.select_previous(&SelectPrevious::default(), window, cx))
 6060        .unwrap();
 6061    cx.assert_editor_state("«aˇ»");
 6062    cx.update_editor(|e, window, cx| e.select_previous(&SelectPrevious::default(), window, cx))
 6063        .unwrap();
 6064    cx.assert_editor_state("«aˇ»");
 6065}
 6066
 6067#[gpui::test]
 6068async fn test_select_previous_with_multiple_carets(cx: &mut TestAppContext) {
 6069    init_test(cx, |_| {});
 6070
 6071    let mut cx = EditorTestContext::new(cx).await;
 6072    cx.set_state(
 6073        r#"let foo = 2;
 6074lˇet foo = 2;
 6075let fooˇ = 2;
 6076let foo = 2;
 6077let foo = ˇ2;"#,
 6078    );
 6079
 6080    cx.update_editor(|e, window, cx| e.select_previous(&SelectPrevious::default(), window, cx))
 6081        .unwrap();
 6082    cx.assert_editor_state(
 6083        r#"let foo = 2;
 6084«letˇ» foo = 2;
 6085let «fooˇ» = 2;
 6086let foo = 2;
 6087let foo = «2ˇ»;"#,
 6088    );
 6089
 6090    // noop for multiple selections with different contents
 6091    cx.update_editor(|e, window, cx| e.select_previous(&SelectPrevious::default(), window, cx))
 6092        .unwrap();
 6093    cx.assert_editor_state(
 6094        r#"let foo = 2;
 6095«letˇ» foo = 2;
 6096let «fooˇ» = 2;
 6097let foo = 2;
 6098let foo = «2ˇ»;"#,
 6099    );
 6100}
 6101
 6102#[gpui::test]
 6103async fn test_select_previous_with_single_selection(cx: &mut TestAppContext) {
 6104    init_test(cx, |_| {});
 6105
 6106    let mut cx = EditorTestContext::new(cx).await;
 6107    cx.set_state("abc\n«ˇabc» abc\ndefabc\nabc");
 6108
 6109    cx.update_editor(|e, window, cx| e.select_previous(&SelectPrevious::default(), window, cx))
 6110        .unwrap();
 6111    cx.assert_editor_state("«abcˇ»\n«ˇabc» abc\ndefabc\nabc");
 6112
 6113    cx.update_editor(|e, window, cx| e.select_previous(&SelectPrevious::default(), window, cx))
 6114        .unwrap();
 6115    cx.assert_editor_state("«abcˇ»\n«ˇabc» abc\ndefabc\n«abcˇ»");
 6116
 6117    cx.update_editor(|editor, window, cx| editor.undo_selection(&UndoSelection, window, cx));
 6118    cx.assert_editor_state("«abcˇ»\n«ˇabc» abc\ndefabc\nabc");
 6119
 6120    cx.update_editor(|editor, window, cx| editor.redo_selection(&RedoSelection, window, cx));
 6121    cx.assert_editor_state("«abcˇ»\n«ˇabc» abc\ndefabc\n«abcˇ»");
 6122
 6123    cx.update_editor(|e, window, cx| e.select_previous(&SelectPrevious::default(), window, cx))
 6124        .unwrap();
 6125    cx.assert_editor_state("«abcˇ»\n«ˇabc» abc\ndef«abcˇ»\n«abcˇ»");
 6126
 6127    cx.update_editor(|e, window, cx| e.select_previous(&SelectPrevious::default(), window, cx))
 6128        .unwrap();
 6129    cx.assert_editor_state("«abcˇ»\n«ˇabc» «abcˇ»\ndef«abcˇ»\n«abcˇ»");
 6130}
 6131
 6132#[gpui::test]
 6133async fn test_select_larger_smaller_syntax_node(cx: &mut TestAppContext) {
 6134    init_test(cx, |_| {});
 6135
 6136    let language = Arc::new(Language::new(
 6137        LanguageConfig::default(),
 6138        Some(tree_sitter_rust::LANGUAGE.into()),
 6139    ));
 6140
 6141    let text = r#"
 6142        use mod1::mod2::{mod3, mod4};
 6143
 6144        fn fn_1(param1: bool, param2: &str) {
 6145            let var1 = "text";
 6146        }
 6147    "#
 6148    .unindent();
 6149
 6150    let buffer = cx.new(|cx| Buffer::local(text, cx).with_language(language, cx));
 6151    let buffer = cx.new(|cx| MultiBuffer::singleton(buffer, cx));
 6152    let (editor, cx) = cx.add_window_view(|window, cx| build_editor(buffer, window, cx));
 6153
 6154    editor
 6155        .condition::<crate::EditorEvent>(cx, |editor, cx| !editor.buffer.read(cx).is_parsing(cx))
 6156        .await;
 6157
 6158    editor.update_in(cx, |editor, window, cx| {
 6159        editor.change_selections(None, window, cx, |s| {
 6160            s.select_display_ranges([
 6161                DisplayPoint::new(DisplayRow(0), 25)..DisplayPoint::new(DisplayRow(0), 25),
 6162                DisplayPoint::new(DisplayRow(2), 24)..DisplayPoint::new(DisplayRow(2), 12),
 6163                DisplayPoint::new(DisplayRow(3), 18)..DisplayPoint::new(DisplayRow(3), 18),
 6164            ]);
 6165        });
 6166        editor.select_larger_syntax_node(&SelectLargerSyntaxNode, window, cx);
 6167    });
 6168    editor.update(cx, |editor, cx| {
 6169        assert_text_with_selections(
 6170            editor,
 6171            indoc! {r#"
 6172                use mod1::mod2::{mod3, «mod4ˇ»};
 6173
 6174                fn fn_1«ˇ(param1: bool, param2: &str)» {
 6175                    let var1 = "«ˇtext»";
 6176                }
 6177            "#},
 6178            cx,
 6179        );
 6180    });
 6181
 6182    editor.update_in(cx, |editor, window, cx| {
 6183        editor.select_larger_syntax_node(&SelectLargerSyntaxNode, window, cx);
 6184    });
 6185    editor.update(cx, |editor, cx| {
 6186        assert_text_with_selections(
 6187            editor,
 6188            indoc! {r#"
 6189                use mod1::mod2::«{mod3, mod4}ˇ»;
 6190
 6191                «ˇfn fn_1(param1: bool, param2: &str) {
 6192                    let var1 = "text";
 6193 6194            "#},
 6195            cx,
 6196        );
 6197    });
 6198
 6199    editor.update_in(cx, |editor, window, cx| {
 6200        editor.select_larger_syntax_node(&SelectLargerSyntaxNode, window, cx);
 6201    });
 6202    assert_eq!(
 6203        editor.update(cx, |editor, cx| editor.selections.display_ranges(cx)),
 6204        &[DisplayPoint::new(DisplayRow(5), 0)..DisplayPoint::new(DisplayRow(0), 0)]
 6205    );
 6206
 6207    // Trying to expand the selected syntax node one more time has no effect.
 6208    editor.update_in(cx, |editor, window, cx| {
 6209        editor.select_larger_syntax_node(&SelectLargerSyntaxNode, window, cx);
 6210    });
 6211    assert_eq!(
 6212        editor.update(cx, |editor, cx| editor.selections.display_ranges(cx)),
 6213        &[DisplayPoint::new(DisplayRow(5), 0)..DisplayPoint::new(DisplayRow(0), 0)]
 6214    );
 6215
 6216    editor.update_in(cx, |editor, window, cx| {
 6217        editor.select_smaller_syntax_node(&SelectSmallerSyntaxNode, window, cx);
 6218    });
 6219    editor.update(cx, |editor, cx| {
 6220        assert_text_with_selections(
 6221            editor,
 6222            indoc! {r#"
 6223                use mod1::mod2::«{mod3, mod4}ˇ»;
 6224
 6225                «ˇfn fn_1(param1: bool, param2: &str) {
 6226                    let var1 = "text";
 6227 6228            "#},
 6229            cx,
 6230        );
 6231    });
 6232
 6233    editor.update_in(cx, |editor, window, cx| {
 6234        editor.select_smaller_syntax_node(&SelectSmallerSyntaxNode, window, cx);
 6235    });
 6236    editor.update(cx, |editor, cx| {
 6237        assert_text_with_selections(
 6238            editor,
 6239            indoc! {r#"
 6240                use mod1::mod2::{mod3, «mod4ˇ»};
 6241
 6242                fn fn_1«ˇ(param1: bool, param2: &str)» {
 6243                    let var1 = "«ˇtext»";
 6244                }
 6245            "#},
 6246            cx,
 6247        );
 6248    });
 6249
 6250    editor.update_in(cx, |editor, window, cx| {
 6251        editor.select_smaller_syntax_node(&SelectSmallerSyntaxNode, window, cx);
 6252    });
 6253    editor.update(cx, |editor, cx| {
 6254        assert_text_with_selections(
 6255            editor,
 6256            indoc! {r#"
 6257                use mod1::mod2::{mod3, mo«ˇ»d4};
 6258
 6259                fn fn_1(para«ˇm1: bool, pa»ram2: &str) {
 6260                    let var1 = "te«ˇ»xt";
 6261                }
 6262            "#},
 6263            cx,
 6264        );
 6265    });
 6266
 6267    // Trying to shrink the selected syntax node one more time has no effect.
 6268    editor.update_in(cx, |editor, window, cx| {
 6269        editor.select_smaller_syntax_node(&SelectSmallerSyntaxNode, window, cx);
 6270    });
 6271    editor.update_in(cx, |editor, _, cx| {
 6272        assert_text_with_selections(
 6273            editor,
 6274            indoc! {r#"
 6275                use mod1::mod2::{mod3, mo«ˇ»d4};
 6276
 6277                fn fn_1(para«ˇm1: bool, pa»ram2: &str) {
 6278                    let var1 = "te«ˇ»xt";
 6279                }
 6280            "#},
 6281            cx,
 6282        );
 6283    });
 6284
 6285    // Ensure that we keep expanding the selection if the larger selection starts or ends within
 6286    // a fold.
 6287    editor.update_in(cx, |editor, window, cx| {
 6288        editor.fold_creases(
 6289            vec![
 6290                Crease::simple(
 6291                    Point::new(0, 21)..Point::new(0, 24),
 6292                    FoldPlaceholder::test(),
 6293                ),
 6294                Crease::simple(
 6295                    Point::new(3, 20)..Point::new(3, 22),
 6296                    FoldPlaceholder::test(),
 6297                ),
 6298            ],
 6299            true,
 6300            window,
 6301            cx,
 6302        );
 6303        editor.select_larger_syntax_node(&SelectLargerSyntaxNode, window, cx);
 6304    });
 6305    editor.update(cx, |editor, cx| {
 6306        assert_text_with_selections(
 6307            editor,
 6308            indoc! {r#"
 6309                use mod1::mod2::«{mod3, mod4}ˇ»;
 6310
 6311                fn fn_1«ˇ(param1: bool, param2: &str)» {
 6312                    «ˇlet var1 = "text";»
 6313                }
 6314            "#},
 6315            cx,
 6316        );
 6317    });
 6318}
 6319
 6320#[gpui::test]
 6321async fn test_fold_function_bodies(cx: &mut TestAppContext) {
 6322    init_test(cx, |_| {});
 6323
 6324    let base_text = r#"
 6325        impl A {
 6326            // this is an uncommitted comment
 6327
 6328            fn b() {
 6329                c();
 6330            }
 6331
 6332            // this is another uncommitted comment
 6333
 6334            fn d() {
 6335                // e
 6336                // f
 6337            }
 6338        }
 6339
 6340        fn g() {
 6341            // h
 6342        }
 6343    "#
 6344    .unindent();
 6345
 6346    let text = r#"
 6347        ˇimpl A {
 6348
 6349            fn b() {
 6350                c();
 6351            }
 6352
 6353            fn d() {
 6354                // e
 6355                // f
 6356            }
 6357        }
 6358
 6359        fn g() {
 6360            // h
 6361        }
 6362    "#
 6363    .unindent();
 6364
 6365    let mut cx = EditorLspTestContext::new_rust(Default::default(), cx).await;
 6366    cx.set_state(&text);
 6367    cx.set_head_text(&base_text);
 6368    cx.update_editor(|editor, window, cx| {
 6369        editor.expand_all_diff_hunks(&Default::default(), window, cx);
 6370    });
 6371
 6372    cx.assert_state_with_diff(
 6373        "
 6374        ˇimpl A {
 6375      -     // this is an uncommitted comment
 6376
 6377            fn b() {
 6378                c();
 6379            }
 6380
 6381      -     // this is another uncommitted comment
 6382      -
 6383            fn d() {
 6384                // e
 6385                // f
 6386            }
 6387        }
 6388
 6389        fn g() {
 6390            // h
 6391        }
 6392    "
 6393        .unindent(),
 6394    );
 6395
 6396    let expected_display_text = "
 6397        impl A {
 6398            // this is an uncommitted comment
 6399
 6400            fn b() {
 6401 6402            }
 6403
 6404            // this is another uncommitted comment
 6405
 6406            fn d() {
 6407 6408            }
 6409        }
 6410
 6411        fn g() {
 6412 6413        }
 6414        "
 6415    .unindent();
 6416
 6417    cx.update_editor(|editor, window, cx| {
 6418        editor.fold_function_bodies(&FoldFunctionBodies, window, cx);
 6419        assert_eq!(editor.display_text(cx), expected_display_text);
 6420    });
 6421}
 6422
 6423#[gpui::test]
 6424async fn test_autoindent(cx: &mut TestAppContext) {
 6425    init_test(cx, |_| {});
 6426
 6427    let language = Arc::new(
 6428        Language::new(
 6429            LanguageConfig {
 6430                brackets: BracketPairConfig {
 6431                    pairs: vec![
 6432                        BracketPair {
 6433                            start: "{".to_string(),
 6434                            end: "}".to_string(),
 6435                            close: false,
 6436                            surround: false,
 6437                            newline: true,
 6438                        },
 6439                        BracketPair {
 6440                            start: "(".to_string(),
 6441                            end: ")".to_string(),
 6442                            close: false,
 6443                            surround: false,
 6444                            newline: true,
 6445                        },
 6446                    ],
 6447                    ..Default::default()
 6448                },
 6449                ..Default::default()
 6450            },
 6451            Some(tree_sitter_rust::LANGUAGE.into()),
 6452        )
 6453        .with_indents_query(
 6454            r#"
 6455                (_ "(" ")" @end) @indent
 6456                (_ "{" "}" @end) @indent
 6457            "#,
 6458        )
 6459        .unwrap(),
 6460    );
 6461
 6462    let text = "fn a() {}";
 6463
 6464    let buffer = cx.new(|cx| Buffer::local(text, cx).with_language(language, cx));
 6465    let buffer = cx.new(|cx| MultiBuffer::singleton(buffer, cx));
 6466    let (editor, cx) = cx.add_window_view(|window, cx| build_editor(buffer, window, cx));
 6467    editor
 6468        .condition::<crate::EditorEvent>(cx, |editor, cx| !editor.buffer.read(cx).is_parsing(cx))
 6469        .await;
 6470
 6471    editor.update_in(cx, |editor, window, cx| {
 6472        editor.change_selections(None, window, cx, |s| s.select_ranges([5..5, 8..8, 9..9]));
 6473        editor.newline(&Newline, window, cx);
 6474        assert_eq!(editor.text(cx), "fn a(\n    \n) {\n    \n}\n");
 6475        assert_eq!(
 6476            editor.selections.ranges(cx),
 6477            &[
 6478                Point::new(1, 4)..Point::new(1, 4),
 6479                Point::new(3, 4)..Point::new(3, 4),
 6480                Point::new(5, 0)..Point::new(5, 0)
 6481            ]
 6482        );
 6483    });
 6484}
 6485
 6486#[gpui::test]
 6487async fn test_autoindent_selections(cx: &mut TestAppContext) {
 6488    init_test(cx, |_| {});
 6489
 6490    {
 6491        let mut cx = EditorLspTestContext::new_rust(Default::default(), cx).await;
 6492        cx.set_state(indoc! {"
 6493            impl A {
 6494
 6495                fn b() {}
 6496
 6497            «fn c() {
 6498
 6499            }ˇ»
 6500            }
 6501        "});
 6502
 6503        cx.update_editor(|editor, window, cx| {
 6504            editor.autoindent(&Default::default(), window, cx);
 6505        });
 6506
 6507        cx.assert_editor_state(indoc! {"
 6508            impl A {
 6509
 6510                fn b() {}
 6511
 6512                «fn c() {
 6513
 6514                }ˇ»
 6515            }
 6516        "});
 6517    }
 6518
 6519    {
 6520        let mut cx = EditorTestContext::new_multibuffer(
 6521            cx,
 6522            [indoc! { "
 6523                impl A {
 6524                «
 6525                // a
 6526                fn b(){}
 6527                »
 6528                «
 6529                    }
 6530                    fn c(){}
 6531                »
 6532            "}],
 6533        );
 6534
 6535        let buffer = cx.update_editor(|editor, _, cx| {
 6536            let buffer = editor.buffer().update(cx, |buffer, _| {
 6537                buffer.all_buffers().iter().next().unwrap().clone()
 6538            });
 6539            buffer.update(cx, |buffer, cx| buffer.set_language(Some(rust_lang()), cx));
 6540            buffer
 6541        });
 6542
 6543        cx.run_until_parked();
 6544        cx.update_editor(|editor, window, cx| {
 6545            editor.select_all(&Default::default(), window, cx);
 6546            editor.autoindent(&Default::default(), window, cx)
 6547        });
 6548        cx.run_until_parked();
 6549
 6550        cx.update(|_, cx| {
 6551            assert_eq!(
 6552                buffer.read(cx).text(),
 6553                indoc! { "
 6554                    impl A {
 6555
 6556                        // a
 6557                        fn b(){}
 6558
 6559
 6560                    }
 6561                    fn c(){}
 6562
 6563                " }
 6564            )
 6565        });
 6566    }
 6567}
 6568
 6569#[gpui::test]
 6570async fn test_autoclose_and_auto_surround_pairs(cx: &mut TestAppContext) {
 6571    init_test(cx, |_| {});
 6572
 6573    let mut cx = EditorTestContext::new(cx).await;
 6574
 6575    let language = Arc::new(Language::new(
 6576        LanguageConfig {
 6577            brackets: BracketPairConfig {
 6578                pairs: vec![
 6579                    BracketPair {
 6580                        start: "{".to_string(),
 6581                        end: "}".to_string(),
 6582                        close: true,
 6583                        surround: true,
 6584                        newline: true,
 6585                    },
 6586                    BracketPair {
 6587                        start: "(".to_string(),
 6588                        end: ")".to_string(),
 6589                        close: true,
 6590                        surround: true,
 6591                        newline: true,
 6592                    },
 6593                    BracketPair {
 6594                        start: "/*".to_string(),
 6595                        end: " */".to_string(),
 6596                        close: true,
 6597                        surround: true,
 6598                        newline: true,
 6599                    },
 6600                    BracketPair {
 6601                        start: "[".to_string(),
 6602                        end: "]".to_string(),
 6603                        close: false,
 6604                        surround: false,
 6605                        newline: true,
 6606                    },
 6607                    BracketPair {
 6608                        start: "\"".to_string(),
 6609                        end: "\"".to_string(),
 6610                        close: true,
 6611                        surround: true,
 6612                        newline: false,
 6613                    },
 6614                    BracketPair {
 6615                        start: "<".to_string(),
 6616                        end: ">".to_string(),
 6617                        close: false,
 6618                        surround: true,
 6619                        newline: true,
 6620                    },
 6621                ],
 6622                ..Default::default()
 6623            },
 6624            autoclose_before: "})]".to_string(),
 6625            ..Default::default()
 6626        },
 6627        Some(tree_sitter_rust::LANGUAGE.into()),
 6628    ));
 6629
 6630    cx.language_registry().add(language.clone());
 6631    cx.update_buffer(|buffer, cx| {
 6632        buffer.set_language(Some(language), cx);
 6633    });
 6634
 6635    cx.set_state(
 6636        &r#"
 6637            🏀ˇ
 6638            εˇ
 6639            ❤️ˇ
 6640        "#
 6641        .unindent(),
 6642    );
 6643
 6644    // autoclose multiple nested brackets at multiple cursors
 6645    cx.update_editor(|editor, window, cx| {
 6646        editor.handle_input("{", window, cx);
 6647        editor.handle_input("{", window, cx);
 6648        editor.handle_input("{", window, cx);
 6649    });
 6650    cx.assert_editor_state(
 6651        &"
 6652            🏀{{{ˇ}}}
 6653            ε{{{ˇ}}}
 6654            ❤️{{{ˇ}}}
 6655        "
 6656        .unindent(),
 6657    );
 6658
 6659    // insert a different closing bracket
 6660    cx.update_editor(|editor, window, cx| {
 6661        editor.handle_input(")", window, cx);
 6662    });
 6663    cx.assert_editor_state(
 6664        &"
 6665            🏀{{{)ˇ}}}
 6666            ε{{{)ˇ}}}
 6667            ❤️{{{)ˇ}}}
 6668        "
 6669        .unindent(),
 6670    );
 6671
 6672    // skip over the auto-closed brackets when typing a closing bracket
 6673    cx.update_editor(|editor, window, cx| {
 6674        editor.move_right(&MoveRight, window, cx);
 6675        editor.handle_input("}", window, cx);
 6676        editor.handle_input("}", window, cx);
 6677        editor.handle_input("}", window, cx);
 6678    });
 6679    cx.assert_editor_state(
 6680        &"
 6681            🏀{{{)}}}}ˇ
 6682            ε{{{)}}}}ˇ
 6683            ❤️{{{)}}}}ˇ
 6684        "
 6685        .unindent(),
 6686    );
 6687
 6688    // autoclose multi-character pairs
 6689    cx.set_state(
 6690        &"
 6691            ˇ
 6692            ˇ
 6693        "
 6694        .unindent(),
 6695    );
 6696    cx.update_editor(|editor, window, cx| {
 6697        editor.handle_input("/", window, cx);
 6698        editor.handle_input("*", window, cx);
 6699    });
 6700    cx.assert_editor_state(
 6701        &"
 6702            /*ˇ */
 6703            /*ˇ */
 6704        "
 6705        .unindent(),
 6706    );
 6707
 6708    // one cursor autocloses a multi-character pair, one cursor
 6709    // does not autoclose.
 6710    cx.set_state(
 6711        &"
 6712 6713            ˇ
 6714        "
 6715        .unindent(),
 6716    );
 6717    cx.update_editor(|editor, window, cx| editor.handle_input("*", window, cx));
 6718    cx.assert_editor_state(
 6719        &"
 6720            /*ˇ */
 6721 6722        "
 6723        .unindent(),
 6724    );
 6725
 6726    // Don't autoclose if the next character isn't whitespace and isn't
 6727    // listed in the language's "autoclose_before" section.
 6728    cx.set_state("ˇa b");
 6729    cx.update_editor(|editor, window, cx| editor.handle_input("{", window, cx));
 6730    cx.assert_editor_state("{ˇa b");
 6731
 6732    // Don't autoclose if `close` is false for the bracket pair
 6733    cx.set_state("ˇ");
 6734    cx.update_editor(|editor, window, cx| editor.handle_input("[", window, cx));
 6735    cx.assert_editor_state("");
 6736
 6737    // Surround with brackets if text is selected
 6738    cx.set_state("«aˇ» b");
 6739    cx.update_editor(|editor, window, cx| editor.handle_input("{", window, cx));
 6740    cx.assert_editor_state("{«aˇ»} b");
 6741
 6742    // Autoclose when not immediately after a word character
 6743    cx.set_state("a ˇ");
 6744    cx.update_editor(|editor, window, cx| editor.handle_input("\"", window, cx));
 6745    cx.assert_editor_state("a \"ˇ\"");
 6746
 6747    // Autoclose pair where the start and end characters are the same
 6748    cx.update_editor(|editor, window, cx| editor.handle_input("\"", window, cx));
 6749    cx.assert_editor_state("a \"\"ˇ");
 6750
 6751    // Don't autoclose when immediately after a word character
 6752    cx.set_state("");
 6753    cx.update_editor(|editor, window, cx| editor.handle_input("\"", window, cx));
 6754    cx.assert_editor_state("a\"ˇ");
 6755
 6756    // Do autoclose when after a non-word character
 6757    cx.set_state("");
 6758    cx.update_editor(|editor, window, cx| editor.handle_input("\"", window, cx));
 6759    cx.assert_editor_state("{\"ˇ\"");
 6760
 6761    // Non identical pairs autoclose regardless of preceding character
 6762    cx.set_state("");
 6763    cx.update_editor(|editor, window, cx| editor.handle_input("{", window, cx));
 6764    cx.assert_editor_state("a{ˇ}");
 6765
 6766    // Don't autoclose pair if autoclose is disabled
 6767    cx.set_state("ˇ");
 6768    cx.update_editor(|editor, window, cx| editor.handle_input("<", window, cx));
 6769    cx.assert_editor_state("");
 6770
 6771    // Surround with brackets if text is selected and auto_surround is enabled, even if autoclose is disabled
 6772    cx.set_state("«aˇ» b");
 6773    cx.update_editor(|editor, window, cx| editor.handle_input("<", window, cx));
 6774    cx.assert_editor_state("<«aˇ»> b");
 6775}
 6776
 6777#[gpui::test]
 6778async fn test_always_treat_brackets_as_autoclosed_skip_over(cx: &mut TestAppContext) {
 6779    init_test(cx, |settings| {
 6780        settings.defaults.always_treat_brackets_as_autoclosed = Some(true);
 6781    });
 6782
 6783    let mut cx = EditorTestContext::new(cx).await;
 6784
 6785    let language = Arc::new(Language::new(
 6786        LanguageConfig {
 6787            brackets: BracketPairConfig {
 6788                pairs: vec![
 6789                    BracketPair {
 6790                        start: "{".to_string(),
 6791                        end: "}".to_string(),
 6792                        close: true,
 6793                        surround: true,
 6794                        newline: true,
 6795                    },
 6796                    BracketPair {
 6797                        start: "(".to_string(),
 6798                        end: ")".to_string(),
 6799                        close: true,
 6800                        surround: true,
 6801                        newline: true,
 6802                    },
 6803                    BracketPair {
 6804                        start: "[".to_string(),
 6805                        end: "]".to_string(),
 6806                        close: false,
 6807                        surround: false,
 6808                        newline: true,
 6809                    },
 6810                ],
 6811                ..Default::default()
 6812            },
 6813            autoclose_before: "})]".to_string(),
 6814            ..Default::default()
 6815        },
 6816        Some(tree_sitter_rust::LANGUAGE.into()),
 6817    ));
 6818
 6819    cx.language_registry().add(language.clone());
 6820    cx.update_buffer(|buffer, cx| {
 6821        buffer.set_language(Some(language), cx);
 6822    });
 6823
 6824    cx.set_state(
 6825        &"
 6826            ˇ
 6827            ˇ
 6828            ˇ
 6829        "
 6830        .unindent(),
 6831    );
 6832
 6833    // ensure only matching closing brackets are skipped over
 6834    cx.update_editor(|editor, window, cx| {
 6835        editor.handle_input("}", window, cx);
 6836        editor.move_left(&MoveLeft, window, cx);
 6837        editor.handle_input(")", window, cx);
 6838        editor.move_left(&MoveLeft, window, cx);
 6839    });
 6840    cx.assert_editor_state(
 6841        &"
 6842            ˇ)}
 6843            ˇ)}
 6844            ˇ)}
 6845        "
 6846        .unindent(),
 6847    );
 6848
 6849    // skip-over closing brackets at multiple cursors
 6850    cx.update_editor(|editor, window, cx| {
 6851        editor.handle_input(")", window, cx);
 6852        editor.handle_input("}", window, cx);
 6853    });
 6854    cx.assert_editor_state(
 6855        &"
 6856            )}ˇ
 6857            )}ˇ
 6858            )}ˇ
 6859        "
 6860        .unindent(),
 6861    );
 6862
 6863    // ignore non-close brackets
 6864    cx.update_editor(|editor, window, cx| {
 6865        editor.handle_input("]", window, cx);
 6866        editor.move_left(&MoveLeft, window, cx);
 6867        editor.handle_input("]", window, cx);
 6868    });
 6869    cx.assert_editor_state(
 6870        &"
 6871            )}]ˇ]
 6872            )}]ˇ]
 6873            )}]ˇ]
 6874        "
 6875        .unindent(),
 6876    );
 6877}
 6878
 6879#[gpui::test]
 6880async fn test_autoclose_with_embedded_language(cx: &mut TestAppContext) {
 6881    init_test(cx, |_| {});
 6882
 6883    let mut cx = EditorTestContext::new(cx).await;
 6884
 6885    let html_language = Arc::new(
 6886        Language::new(
 6887            LanguageConfig {
 6888                name: "HTML".into(),
 6889                brackets: BracketPairConfig {
 6890                    pairs: vec![
 6891                        BracketPair {
 6892                            start: "<".into(),
 6893                            end: ">".into(),
 6894                            close: true,
 6895                            ..Default::default()
 6896                        },
 6897                        BracketPair {
 6898                            start: "{".into(),
 6899                            end: "}".into(),
 6900                            close: true,
 6901                            ..Default::default()
 6902                        },
 6903                        BracketPair {
 6904                            start: "(".into(),
 6905                            end: ")".into(),
 6906                            close: true,
 6907                            ..Default::default()
 6908                        },
 6909                    ],
 6910                    ..Default::default()
 6911                },
 6912                autoclose_before: "})]>".into(),
 6913                ..Default::default()
 6914            },
 6915            Some(tree_sitter_html::LANGUAGE.into()),
 6916        )
 6917        .with_injection_query(
 6918            r#"
 6919            (script_element
 6920                (raw_text) @injection.content
 6921                (#set! injection.language "javascript"))
 6922            "#,
 6923        )
 6924        .unwrap(),
 6925    );
 6926
 6927    let javascript_language = Arc::new(Language::new(
 6928        LanguageConfig {
 6929            name: "JavaScript".into(),
 6930            brackets: BracketPairConfig {
 6931                pairs: vec![
 6932                    BracketPair {
 6933                        start: "/*".into(),
 6934                        end: " */".into(),
 6935                        close: true,
 6936                        ..Default::default()
 6937                    },
 6938                    BracketPair {
 6939                        start: "{".into(),
 6940                        end: "}".into(),
 6941                        close: true,
 6942                        ..Default::default()
 6943                    },
 6944                    BracketPair {
 6945                        start: "(".into(),
 6946                        end: ")".into(),
 6947                        close: true,
 6948                        ..Default::default()
 6949                    },
 6950                ],
 6951                ..Default::default()
 6952            },
 6953            autoclose_before: "})]>".into(),
 6954            ..Default::default()
 6955        },
 6956        Some(tree_sitter_typescript::LANGUAGE_TSX.into()),
 6957    ));
 6958
 6959    cx.language_registry().add(html_language.clone());
 6960    cx.language_registry().add(javascript_language.clone());
 6961
 6962    cx.update_buffer(|buffer, cx| {
 6963        buffer.set_language(Some(html_language), cx);
 6964    });
 6965
 6966    cx.set_state(
 6967        &r#"
 6968            <body>ˇ
 6969                <script>
 6970                    var x = 1;ˇ
 6971                </script>
 6972            </body>ˇ
 6973        "#
 6974        .unindent(),
 6975    );
 6976
 6977    // Precondition: different languages are active at different locations.
 6978    cx.update_editor(|editor, window, cx| {
 6979        let snapshot = editor.snapshot(window, cx);
 6980        let cursors = editor.selections.ranges::<usize>(cx);
 6981        let languages = cursors
 6982            .iter()
 6983            .map(|c| snapshot.language_at(c.start).unwrap().name())
 6984            .collect::<Vec<_>>();
 6985        assert_eq!(
 6986            languages,
 6987            &["HTML".into(), "JavaScript".into(), "HTML".into()]
 6988        );
 6989    });
 6990
 6991    // Angle brackets autoclose in HTML, but not JavaScript.
 6992    cx.update_editor(|editor, window, cx| {
 6993        editor.handle_input("<", window, cx);
 6994        editor.handle_input("a", window, cx);
 6995    });
 6996    cx.assert_editor_state(
 6997        &r#"
 6998            <body><aˇ>
 6999                <script>
 7000                    var x = 1;<aˇ
 7001                </script>
 7002            </body><aˇ>
 7003        "#
 7004        .unindent(),
 7005    );
 7006
 7007    // Curly braces and parens autoclose in both HTML and JavaScript.
 7008    cx.update_editor(|editor, window, cx| {
 7009        editor.handle_input(" b=", window, cx);
 7010        editor.handle_input("{", window, cx);
 7011        editor.handle_input("c", window, cx);
 7012        editor.handle_input("(", window, cx);
 7013    });
 7014    cx.assert_editor_state(
 7015        &r#"
 7016            <body><a b={c(ˇ)}>
 7017                <script>
 7018                    var x = 1;<a b={c(ˇ)}
 7019                </script>
 7020            </body><a b={c(ˇ)}>
 7021        "#
 7022        .unindent(),
 7023    );
 7024
 7025    // Brackets that were already autoclosed are skipped.
 7026    cx.update_editor(|editor, window, cx| {
 7027        editor.handle_input(")", window, cx);
 7028        editor.handle_input("d", window, cx);
 7029        editor.handle_input("}", window, cx);
 7030    });
 7031    cx.assert_editor_state(
 7032        &r#"
 7033            <body><a b={c()d}ˇ>
 7034                <script>
 7035                    var x = 1;<a b={c()d}ˇ
 7036                </script>
 7037            </body><a b={c()d}ˇ>
 7038        "#
 7039        .unindent(),
 7040    );
 7041    cx.update_editor(|editor, window, cx| {
 7042        editor.handle_input(">", window, cx);
 7043    });
 7044    cx.assert_editor_state(
 7045        &r#"
 7046            <body><a b={c()d}>ˇ
 7047                <script>
 7048                    var x = 1;<a b={c()d}>ˇ
 7049                </script>
 7050            </body><a b={c()d}>ˇ
 7051        "#
 7052        .unindent(),
 7053    );
 7054
 7055    // Reset
 7056    cx.set_state(
 7057        &r#"
 7058            <body>ˇ
 7059                <script>
 7060                    var x = 1;ˇ
 7061                </script>
 7062            </body>ˇ
 7063        "#
 7064        .unindent(),
 7065    );
 7066
 7067    cx.update_editor(|editor, window, cx| {
 7068        editor.handle_input("<", window, cx);
 7069    });
 7070    cx.assert_editor_state(
 7071        &r#"
 7072            <body><ˇ>
 7073                <script>
 7074                    var x = 1;<ˇ
 7075                </script>
 7076            </body><ˇ>
 7077        "#
 7078        .unindent(),
 7079    );
 7080
 7081    // When backspacing, the closing angle brackets are removed.
 7082    cx.update_editor(|editor, window, cx| {
 7083        editor.backspace(&Backspace, window, cx);
 7084    });
 7085    cx.assert_editor_state(
 7086        &r#"
 7087            <body>ˇ
 7088                <script>
 7089                    var x = 1;ˇ
 7090                </script>
 7091            </body>ˇ
 7092        "#
 7093        .unindent(),
 7094    );
 7095
 7096    // Block comments autoclose in JavaScript, but not HTML.
 7097    cx.update_editor(|editor, window, cx| {
 7098        editor.handle_input("/", window, cx);
 7099        editor.handle_input("*", window, cx);
 7100    });
 7101    cx.assert_editor_state(
 7102        &r#"
 7103            <body>/*ˇ
 7104                <script>
 7105                    var x = 1;/*ˇ */
 7106                </script>
 7107            </body>/*ˇ
 7108        "#
 7109        .unindent(),
 7110    );
 7111}
 7112
 7113#[gpui::test]
 7114async fn test_autoclose_with_overrides(cx: &mut TestAppContext) {
 7115    init_test(cx, |_| {});
 7116
 7117    let mut cx = EditorTestContext::new(cx).await;
 7118
 7119    let rust_language = Arc::new(
 7120        Language::new(
 7121            LanguageConfig {
 7122                name: "Rust".into(),
 7123                brackets: serde_json::from_value(json!([
 7124                    { "start": "{", "end": "}", "close": true, "newline": true },
 7125                    { "start": "\"", "end": "\"", "close": true, "newline": false, "not_in": ["string"] },
 7126                ]))
 7127                .unwrap(),
 7128                autoclose_before: "})]>".into(),
 7129                ..Default::default()
 7130            },
 7131            Some(tree_sitter_rust::LANGUAGE.into()),
 7132        )
 7133        .with_override_query("(string_literal) @string")
 7134        .unwrap(),
 7135    );
 7136
 7137    cx.language_registry().add(rust_language.clone());
 7138    cx.update_buffer(|buffer, cx| {
 7139        buffer.set_language(Some(rust_language), cx);
 7140    });
 7141
 7142    cx.set_state(
 7143        &r#"
 7144            let x = ˇ
 7145        "#
 7146        .unindent(),
 7147    );
 7148
 7149    // Inserting a quotation mark. A closing quotation mark is automatically inserted.
 7150    cx.update_editor(|editor, window, cx| {
 7151        editor.handle_input("\"", window, cx);
 7152    });
 7153    cx.assert_editor_state(
 7154        &r#"
 7155            let x = "ˇ"
 7156        "#
 7157        .unindent(),
 7158    );
 7159
 7160    // Inserting another quotation mark. The cursor moves across the existing
 7161    // automatically-inserted quotation mark.
 7162    cx.update_editor(|editor, window, cx| {
 7163        editor.handle_input("\"", window, cx);
 7164    });
 7165    cx.assert_editor_state(
 7166        &r#"
 7167            let x = ""ˇ
 7168        "#
 7169        .unindent(),
 7170    );
 7171
 7172    // Reset
 7173    cx.set_state(
 7174        &r#"
 7175            let x = ˇ
 7176        "#
 7177        .unindent(),
 7178    );
 7179
 7180    // Inserting a quotation mark inside of a string. A second quotation mark is not inserted.
 7181    cx.update_editor(|editor, window, cx| {
 7182        editor.handle_input("\"", window, cx);
 7183        editor.handle_input(" ", window, cx);
 7184        editor.move_left(&Default::default(), window, cx);
 7185        editor.handle_input("\\", window, cx);
 7186        editor.handle_input("\"", window, cx);
 7187    });
 7188    cx.assert_editor_state(
 7189        &r#"
 7190            let x = "\"ˇ "
 7191        "#
 7192        .unindent(),
 7193    );
 7194
 7195    // Inserting a closing quotation mark at the position of an automatically-inserted quotation
 7196    // mark. Nothing is inserted.
 7197    cx.update_editor(|editor, window, cx| {
 7198        editor.move_right(&Default::default(), window, cx);
 7199        editor.handle_input("\"", window, cx);
 7200    });
 7201    cx.assert_editor_state(
 7202        &r#"
 7203            let x = "\" "ˇ
 7204        "#
 7205        .unindent(),
 7206    );
 7207}
 7208
 7209#[gpui::test]
 7210async fn test_surround_with_pair(cx: &mut TestAppContext) {
 7211    init_test(cx, |_| {});
 7212
 7213    let language = Arc::new(Language::new(
 7214        LanguageConfig {
 7215            brackets: BracketPairConfig {
 7216                pairs: vec![
 7217                    BracketPair {
 7218                        start: "{".to_string(),
 7219                        end: "}".to_string(),
 7220                        close: true,
 7221                        surround: true,
 7222                        newline: true,
 7223                    },
 7224                    BracketPair {
 7225                        start: "/* ".to_string(),
 7226                        end: "*/".to_string(),
 7227                        close: true,
 7228                        surround: true,
 7229                        ..Default::default()
 7230                    },
 7231                ],
 7232                ..Default::default()
 7233            },
 7234            ..Default::default()
 7235        },
 7236        Some(tree_sitter_rust::LANGUAGE.into()),
 7237    ));
 7238
 7239    let text = r#"
 7240        a
 7241        b
 7242        c
 7243    "#
 7244    .unindent();
 7245
 7246    let buffer = cx.new(|cx| Buffer::local(text, cx).with_language(language, cx));
 7247    let buffer = cx.new(|cx| MultiBuffer::singleton(buffer, cx));
 7248    let (editor, cx) = cx.add_window_view(|window, cx| build_editor(buffer, window, cx));
 7249    editor
 7250        .condition::<crate::EditorEvent>(cx, |editor, cx| !editor.buffer.read(cx).is_parsing(cx))
 7251        .await;
 7252
 7253    editor.update_in(cx, |editor, window, cx| {
 7254        editor.change_selections(None, window, cx, |s| {
 7255            s.select_display_ranges([
 7256                DisplayPoint::new(DisplayRow(0), 0)..DisplayPoint::new(DisplayRow(0), 1),
 7257                DisplayPoint::new(DisplayRow(1), 0)..DisplayPoint::new(DisplayRow(1), 1),
 7258                DisplayPoint::new(DisplayRow(2), 0)..DisplayPoint::new(DisplayRow(2), 1),
 7259            ])
 7260        });
 7261
 7262        editor.handle_input("{", window, cx);
 7263        editor.handle_input("{", window, cx);
 7264        editor.handle_input("{", window, cx);
 7265        assert_eq!(
 7266            editor.text(cx),
 7267            "
 7268                {{{a}}}
 7269                {{{b}}}
 7270                {{{c}}}
 7271            "
 7272            .unindent()
 7273        );
 7274        assert_eq!(
 7275            editor.selections.display_ranges(cx),
 7276            [
 7277                DisplayPoint::new(DisplayRow(0), 3)..DisplayPoint::new(DisplayRow(0), 4),
 7278                DisplayPoint::new(DisplayRow(1), 3)..DisplayPoint::new(DisplayRow(1), 4),
 7279                DisplayPoint::new(DisplayRow(2), 3)..DisplayPoint::new(DisplayRow(2), 4)
 7280            ]
 7281        );
 7282
 7283        editor.undo(&Undo, window, cx);
 7284        editor.undo(&Undo, window, cx);
 7285        editor.undo(&Undo, window, cx);
 7286        assert_eq!(
 7287            editor.text(cx),
 7288            "
 7289                a
 7290                b
 7291                c
 7292            "
 7293            .unindent()
 7294        );
 7295        assert_eq!(
 7296            editor.selections.display_ranges(cx),
 7297            [
 7298                DisplayPoint::new(DisplayRow(0), 0)..DisplayPoint::new(DisplayRow(0), 1),
 7299                DisplayPoint::new(DisplayRow(1), 0)..DisplayPoint::new(DisplayRow(1), 1),
 7300                DisplayPoint::new(DisplayRow(2), 0)..DisplayPoint::new(DisplayRow(2), 1)
 7301            ]
 7302        );
 7303
 7304        // Ensure inserting the first character of a multi-byte bracket pair
 7305        // doesn't surround the selections with the bracket.
 7306        editor.handle_input("/", window, cx);
 7307        assert_eq!(
 7308            editor.text(cx),
 7309            "
 7310                /
 7311                /
 7312                /
 7313            "
 7314            .unindent()
 7315        );
 7316        assert_eq!(
 7317            editor.selections.display_ranges(cx),
 7318            [
 7319                DisplayPoint::new(DisplayRow(0), 1)..DisplayPoint::new(DisplayRow(0), 1),
 7320                DisplayPoint::new(DisplayRow(1), 1)..DisplayPoint::new(DisplayRow(1), 1),
 7321                DisplayPoint::new(DisplayRow(2), 1)..DisplayPoint::new(DisplayRow(2), 1)
 7322            ]
 7323        );
 7324
 7325        editor.undo(&Undo, window, cx);
 7326        assert_eq!(
 7327            editor.text(cx),
 7328            "
 7329                a
 7330                b
 7331                c
 7332            "
 7333            .unindent()
 7334        );
 7335        assert_eq!(
 7336            editor.selections.display_ranges(cx),
 7337            [
 7338                DisplayPoint::new(DisplayRow(0), 0)..DisplayPoint::new(DisplayRow(0), 1),
 7339                DisplayPoint::new(DisplayRow(1), 0)..DisplayPoint::new(DisplayRow(1), 1),
 7340                DisplayPoint::new(DisplayRow(2), 0)..DisplayPoint::new(DisplayRow(2), 1)
 7341            ]
 7342        );
 7343
 7344        // Ensure inserting the last character of a multi-byte bracket pair
 7345        // doesn't surround the selections with the bracket.
 7346        editor.handle_input("*", window, cx);
 7347        assert_eq!(
 7348            editor.text(cx),
 7349            "
 7350                *
 7351                *
 7352                *
 7353            "
 7354            .unindent()
 7355        );
 7356        assert_eq!(
 7357            editor.selections.display_ranges(cx),
 7358            [
 7359                DisplayPoint::new(DisplayRow(0), 1)..DisplayPoint::new(DisplayRow(0), 1),
 7360                DisplayPoint::new(DisplayRow(1), 1)..DisplayPoint::new(DisplayRow(1), 1),
 7361                DisplayPoint::new(DisplayRow(2), 1)..DisplayPoint::new(DisplayRow(2), 1)
 7362            ]
 7363        );
 7364    });
 7365}
 7366
 7367#[gpui::test]
 7368async fn test_delete_autoclose_pair(cx: &mut TestAppContext) {
 7369    init_test(cx, |_| {});
 7370
 7371    let language = Arc::new(Language::new(
 7372        LanguageConfig {
 7373            brackets: BracketPairConfig {
 7374                pairs: vec![BracketPair {
 7375                    start: "{".to_string(),
 7376                    end: "}".to_string(),
 7377                    close: true,
 7378                    surround: true,
 7379                    newline: true,
 7380                }],
 7381                ..Default::default()
 7382            },
 7383            autoclose_before: "}".to_string(),
 7384            ..Default::default()
 7385        },
 7386        Some(tree_sitter_rust::LANGUAGE.into()),
 7387    ));
 7388
 7389    let text = r#"
 7390        a
 7391        b
 7392        c
 7393    "#
 7394    .unindent();
 7395
 7396    let buffer = cx.new(|cx| Buffer::local(text, cx).with_language(language, cx));
 7397    let buffer = cx.new(|cx| MultiBuffer::singleton(buffer, cx));
 7398    let (editor, cx) = cx.add_window_view(|window, cx| build_editor(buffer, window, cx));
 7399    editor
 7400        .condition::<crate::EditorEvent>(cx, |editor, cx| !editor.buffer.read(cx).is_parsing(cx))
 7401        .await;
 7402
 7403    editor.update_in(cx, |editor, window, cx| {
 7404        editor.change_selections(None, window, cx, |s| {
 7405            s.select_ranges([
 7406                Point::new(0, 1)..Point::new(0, 1),
 7407                Point::new(1, 1)..Point::new(1, 1),
 7408                Point::new(2, 1)..Point::new(2, 1),
 7409            ])
 7410        });
 7411
 7412        editor.handle_input("{", window, cx);
 7413        editor.handle_input("{", window, cx);
 7414        editor.handle_input("_", window, cx);
 7415        assert_eq!(
 7416            editor.text(cx),
 7417            "
 7418                a{{_}}
 7419                b{{_}}
 7420                c{{_}}
 7421            "
 7422            .unindent()
 7423        );
 7424        assert_eq!(
 7425            editor.selections.ranges::<Point>(cx),
 7426            [
 7427                Point::new(0, 4)..Point::new(0, 4),
 7428                Point::new(1, 4)..Point::new(1, 4),
 7429                Point::new(2, 4)..Point::new(2, 4)
 7430            ]
 7431        );
 7432
 7433        editor.backspace(&Default::default(), window, cx);
 7434        editor.backspace(&Default::default(), window, cx);
 7435        assert_eq!(
 7436            editor.text(cx),
 7437            "
 7438                a{}
 7439                b{}
 7440                c{}
 7441            "
 7442            .unindent()
 7443        );
 7444        assert_eq!(
 7445            editor.selections.ranges::<Point>(cx),
 7446            [
 7447                Point::new(0, 2)..Point::new(0, 2),
 7448                Point::new(1, 2)..Point::new(1, 2),
 7449                Point::new(2, 2)..Point::new(2, 2)
 7450            ]
 7451        );
 7452
 7453        editor.delete_to_previous_word_start(&Default::default(), window, cx);
 7454        assert_eq!(
 7455            editor.text(cx),
 7456            "
 7457                a
 7458                b
 7459                c
 7460            "
 7461            .unindent()
 7462        );
 7463        assert_eq!(
 7464            editor.selections.ranges::<Point>(cx),
 7465            [
 7466                Point::new(0, 1)..Point::new(0, 1),
 7467                Point::new(1, 1)..Point::new(1, 1),
 7468                Point::new(2, 1)..Point::new(2, 1)
 7469            ]
 7470        );
 7471    });
 7472}
 7473
 7474#[gpui::test]
 7475async fn test_always_treat_brackets_as_autoclosed_delete(cx: &mut TestAppContext) {
 7476    init_test(cx, |settings| {
 7477        settings.defaults.always_treat_brackets_as_autoclosed = Some(true);
 7478    });
 7479
 7480    let mut cx = EditorTestContext::new(cx).await;
 7481
 7482    let language = Arc::new(Language::new(
 7483        LanguageConfig {
 7484            brackets: BracketPairConfig {
 7485                pairs: vec![
 7486                    BracketPair {
 7487                        start: "{".to_string(),
 7488                        end: "}".to_string(),
 7489                        close: true,
 7490                        surround: true,
 7491                        newline: true,
 7492                    },
 7493                    BracketPair {
 7494                        start: "(".to_string(),
 7495                        end: ")".to_string(),
 7496                        close: true,
 7497                        surround: true,
 7498                        newline: true,
 7499                    },
 7500                    BracketPair {
 7501                        start: "[".to_string(),
 7502                        end: "]".to_string(),
 7503                        close: false,
 7504                        surround: true,
 7505                        newline: true,
 7506                    },
 7507                ],
 7508                ..Default::default()
 7509            },
 7510            autoclose_before: "})]".to_string(),
 7511            ..Default::default()
 7512        },
 7513        Some(tree_sitter_rust::LANGUAGE.into()),
 7514    ));
 7515
 7516    cx.language_registry().add(language.clone());
 7517    cx.update_buffer(|buffer, cx| {
 7518        buffer.set_language(Some(language), cx);
 7519    });
 7520
 7521    cx.set_state(
 7522        &"
 7523            {(ˇ)}
 7524            [[ˇ]]
 7525            {(ˇ)}
 7526        "
 7527        .unindent(),
 7528    );
 7529
 7530    cx.update_editor(|editor, window, cx| {
 7531        editor.backspace(&Default::default(), window, cx);
 7532        editor.backspace(&Default::default(), window, cx);
 7533    });
 7534
 7535    cx.assert_editor_state(
 7536        &"
 7537            ˇ
 7538            ˇ]]
 7539            ˇ
 7540        "
 7541        .unindent(),
 7542    );
 7543
 7544    cx.update_editor(|editor, window, cx| {
 7545        editor.handle_input("{", window, cx);
 7546        editor.handle_input("{", window, cx);
 7547        editor.move_right(&MoveRight, window, cx);
 7548        editor.move_right(&MoveRight, window, cx);
 7549        editor.move_left(&MoveLeft, window, cx);
 7550        editor.move_left(&MoveLeft, window, cx);
 7551        editor.backspace(&Default::default(), window, cx);
 7552    });
 7553
 7554    cx.assert_editor_state(
 7555        &"
 7556            {ˇ}
 7557            {ˇ}]]
 7558            {ˇ}
 7559        "
 7560        .unindent(),
 7561    );
 7562
 7563    cx.update_editor(|editor, window, cx| {
 7564        editor.backspace(&Default::default(), window, cx);
 7565    });
 7566
 7567    cx.assert_editor_state(
 7568        &"
 7569            ˇ
 7570            ˇ]]
 7571            ˇ
 7572        "
 7573        .unindent(),
 7574    );
 7575}
 7576
 7577#[gpui::test]
 7578async fn test_auto_replace_emoji_shortcode(cx: &mut TestAppContext) {
 7579    init_test(cx, |_| {});
 7580
 7581    let language = Arc::new(Language::new(
 7582        LanguageConfig::default(),
 7583        Some(tree_sitter_rust::LANGUAGE.into()),
 7584    ));
 7585
 7586    let buffer = cx.new(|cx| Buffer::local("", cx).with_language(language, cx));
 7587    let buffer = cx.new(|cx| MultiBuffer::singleton(buffer, cx));
 7588    let (editor, cx) = cx.add_window_view(|window, cx| build_editor(buffer, window, cx));
 7589    editor
 7590        .condition::<crate::EditorEvent>(cx, |editor, cx| !editor.buffer.read(cx).is_parsing(cx))
 7591        .await;
 7592
 7593    editor.update_in(cx, |editor, window, cx| {
 7594        editor.set_auto_replace_emoji_shortcode(true);
 7595
 7596        editor.handle_input("Hello ", window, cx);
 7597        editor.handle_input(":wave", window, cx);
 7598        assert_eq!(editor.text(cx), "Hello :wave".unindent());
 7599
 7600        editor.handle_input(":", window, cx);
 7601        assert_eq!(editor.text(cx), "Hello 👋".unindent());
 7602
 7603        editor.handle_input(" :smile", window, cx);
 7604        assert_eq!(editor.text(cx), "Hello 👋 :smile".unindent());
 7605
 7606        editor.handle_input(":", window, cx);
 7607        assert_eq!(editor.text(cx), "Hello 👋 😄".unindent());
 7608
 7609        // Ensure shortcode gets replaced when it is part of a word that only consists of emojis
 7610        editor.handle_input(":wave", window, cx);
 7611        assert_eq!(editor.text(cx), "Hello 👋 😄:wave".unindent());
 7612
 7613        editor.handle_input(":", window, cx);
 7614        assert_eq!(editor.text(cx), "Hello 👋 😄👋".unindent());
 7615
 7616        editor.handle_input(":1", window, cx);
 7617        assert_eq!(editor.text(cx), "Hello 👋 😄👋:1".unindent());
 7618
 7619        editor.handle_input(":", window, cx);
 7620        assert_eq!(editor.text(cx), "Hello 👋 😄👋:1:".unindent());
 7621
 7622        // Ensure shortcode does not get replaced when it is part of a word
 7623        editor.handle_input(" Test:wave", window, cx);
 7624        assert_eq!(editor.text(cx), "Hello 👋 😄👋:1: Test:wave".unindent());
 7625
 7626        editor.handle_input(":", window, cx);
 7627        assert_eq!(editor.text(cx), "Hello 👋 😄👋:1: Test:wave:".unindent());
 7628
 7629        editor.set_auto_replace_emoji_shortcode(false);
 7630
 7631        // Ensure shortcode does not get replaced when auto replace is off
 7632        editor.handle_input(" :wave", window, cx);
 7633        assert_eq!(
 7634            editor.text(cx),
 7635            "Hello 👋 😄👋:1: Test:wave: :wave".unindent()
 7636        );
 7637
 7638        editor.handle_input(":", window, cx);
 7639        assert_eq!(
 7640            editor.text(cx),
 7641            "Hello 👋 😄👋:1: Test:wave: :wave:".unindent()
 7642        );
 7643    });
 7644}
 7645
 7646#[gpui::test]
 7647async fn test_snippet_placeholder_choices(cx: &mut TestAppContext) {
 7648    init_test(cx, |_| {});
 7649
 7650    let (text, insertion_ranges) = marked_text_ranges(
 7651        indoc! {"
 7652            ˇ
 7653        "},
 7654        false,
 7655    );
 7656
 7657    let buffer = cx.update(|cx| MultiBuffer::build_simple(&text, cx));
 7658    let (editor, cx) = cx.add_window_view(|window, cx| build_editor(buffer, window, cx));
 7659
 7660    _ = editor.update_in(cx, |editor, window, cx| {
 7661        let snippet = Snippet::parse("type ${1|,i32,u32|} = $2").unwrap();
 7662
 7663        editor
 7664            .insert_snippet(&insertion_ranges, snippet, window, cx)
 7665            .unwrap();
 7666
 7667        fn assert(editor: &mut Editor, cx: &mut Context<Editor>, marked_text: &str) {
 7668            let (expected_text, selection_ranges) = marked_text_ranges(marked_text, false);
 7669            assert_eq!(editor.text(cx), expected_text);
 7670            assert_eq!(editor.selections.ranges::<usize>(cx), selection_ranges);
 7671        }
 7672
 7673        assert(
 7674            editor,
 7675            cx,
 7676            indoc! {"
 7677            type «» =•
 7678            "},
 7679        );
 7680
 7681        assert!(editor.context_menu_visible(), "There should be a matches");
 7682    });
 7683}
 7684
 7685#[gpui::test]
 7686async fn test_snippets(cx: &mut TestAppContext) {
 7687    init_test(cx, |_| {});
 7688
 7689    let (text, insertion_ranges) = marked_text_ranges(
 7690        indoc! {"
 7691            a.ˇ b
 7692            a.ˇ b
 7693            a.ˇ b
 7694        "},
 7695        false,
 7696    );
 7697
 7698    let buffer = cx.update(|cx| MultiBuffer::build_simple(&text, cx));
 7699    let (editor, cx) = cx.add_window_view(|window, cx| build_editor(buffer, window, cx));
 7700
 7701    editor.update_in(cx, |editor, window, cx| {
 7702        let snippet = Snippet::parse("f(${1:one}, ${2:two}, ${1:three})$0").unwrap();
 7703
 7704        editor
 7705            .insert_snippet(&insertion_ranges, snippet, window, cx)
 7706            .unwrap();
 7707
 7708        fn assert(editor: &mut Editor, cx: &mut Context<Editor>, marked_text: &str) {
 7709            let (expected_text, selection_ranges) = marked_text_ranges(marked_text, false);
 7710            assert_eq!(editor.text(cx), expected_text);
 7711            assert_eq!(editor.selections.ranges::<usize>(cx), selection_ranges);
 7712        }
 7713
 7714        assert(
 7715            editor,
 7716            cx,
 7717            indoc! {"
 7718                a.f(«one», two, «three») b
 7719                a.f(«one», two, «three») b
 7720                a.f(«one», two, «three») b
 7721            "},
 7722        );
 7723
 7724        // Can't move earlier than the first tab stop
 7725        assert!(!editor.move_to_prev_snippet_tabstop(window, cx));
 7726        assert(
 7727            editor,
 7728            cx,
 7729            indoc! {"
 7730                a.f(«one», two, «three») b
 7731                a.f(«one», two, «three») b
 7732                a.f(«one», two, «three») b
 7733            "},
 7734        );
 7735
 7736        assert!(editor.move_to_next_snippet_tabstop(window, cx));
 7737        assert(
 7738            editor,
 7739            cx,
 7740            indoc! {"
 7741                a.f(one, «two», three) b
 7742                a.f(one, «two», three) b
 7743                a.f(one, «two», three) b
 7744            "},
 7745        );
 7746
 7747        editor.move_to_prev_snippet_tabstop(window, cx);
 7748        assert(
 7749            editor,
 7750            cx,
 7751            indoc! {"
 7752                a.f(«one», two, «three») b
 7753                a.f(«one», two, «three») b
 7754                a.f(«one», two, «three») b
 7755            "},
 7756        );
 7757
 7758        assert!(editor.move_to_next_snippet_tabstop(window, cx));
 7759        assert(
 7760            editor,
 7761            cx,
 7762            indoc! {"
 7763                a.f(one, «two», three) b
 7764                a.f(one, «two», three) b
 7765                a.f(one, «two», three) b
 7766            "},
 7767        );
 7768        assert!(editor.move_to_next_snippet_tabstop(window, cx));
 7769        assert(
 7770            editor,
 7771            cx,
 7772            indoc! {"
 7773                a.f(one, two, three)ˇ b
 7774                a.f(one, two, three)ˇ b
 7775                a.f(one, two, three)ˇ b
 7776            "},
 7777        );
 7778
 7779        // As soon as the last tab stop is reached, snippet state is gone
 7780        editor.move_to_prev_snippet_tabstop(window, cx);
 7781        assert(
 7782            editor,
 7783            cx,
 7784            indoc! {"
 7785                a.f(one, two, three)ˇ b
 7786                a.f(one, two, three)ˇ b
 7787                a.f(one, two, three)ˇ b
 7788            "},
 7789        );
 7790    });
 7791}
 7792
 7793#[gpui::test]
 7794async fn test_document_format_during_save(cx: &mut TestAppContext) {
 7795    init_test(cx, |_| {});
 7796
 7797    let fs = FakeFs::new(cx.executor());
 7798    fs.insert_file(path!("/file.rs"), Default::default()).await;
 7799
 7800    let project = Project::test(fs, [path!("/file.rs").as_ref()], cx).await;
 7801
 7802    let language_registry = project.read_with(cx, |project, _| project.languages().clone());
 7803    language_registry.add(rust_lang());
 7804    let mut fake_servers = language_registry.register_fake_lsp(
 7805        "Rust",
 7806        FakeLspAdapter {
 7807            capabilities: lsp::ServerCapabilities {
 7808                document_formatting_provider: Some(lsp::OneOf::Left(true)),
 7809                ..Default::default()
 7810            },
 7811            ..Default::default()
 7812        },
 7813    );
 7814
 7815    let buffer = project
 7816        .update(cx, |project, cx| {
 7817            project.open_local_buffer(path!("/file.rs"), cx)
 7818        })
 7819        .await
 7820        .unwrap();
 7821
 7822    let buffer = cx.new(|cx| MultiBuffer::singleton(buffer, cx));
 7823    let (editor, cx) = cx.add_window_view(|window, cx| {
 7824        build_editor_with_project(project.clone(), buffer, window, cx)
 7825    });
 7826    editor.update_in(cx, |editor, window, cx| {
 7827        editor.set_text("one\ntwo\nthree\n", window, cx)
 7828    });
 7829    assert!(cx.read(|cx| editor.is_dirty(cx)));
 7830
 7831    cx.executor().start_waiting();
 7832    let fake_server = fake_servers.next().await.unwrap();
 7833
 7834    {
 7835        fake_server.set_request_handler::<lsp::request::Formatting, _, _>(
 7836            move |params, _| async move {
 7837                assert_eq!(
 7838                    params.text_document.uri,
 7839                    lsp::Url::from_file_path(path!("/file.rs")).unwrap()
 7840                );
 7841                assert_eq!(params.options.tab_size, 4);
 7842                Ok(Some(vec![lsp::TextEdit::new(
 7843                    lsp::Range::new(lsp::Position::new(0, 3), lsp::Position::new(1, 0)),
 7844                    ", ".to_string(),
 7845                )]))
 7846            },
 7847        );
 7848        let save = editor
 7849            .update_in(cx, |editor, window, cx| {
 7850                editor.save(true, project.clone(), window, cx)
 7851            })
 7852            .unwrap();
 7853        cx.executor().start_waiting();
 7854        save.await;
 7855
 7856        assert_eq!(
 7857            editor.update(cx, |editor, cx| editor.text(cx)),
 7858            "one, two\nthree\n"
 7859        );
 7860        assert!(!cx.read(|cx| editor.is_dirty(cx)));
 7861    }
 7862
 7863    {
 7864        editor.update_in(cx, |editor, window, cx| {
 7865            editor.set_text("one\ntwo\nthree\n", window, cx)
 7866        });
 7867        assert!(cx.read(|cx| editor.is_dirty(cx)));
 7868
 7869        // Ensure we can still save even if formatting hangs.
 7870        fake_server.set_request_handler::<lsp::request::Formatting, _, _>(
 7871            move |params, _| async move {
 7872                assert_eq!(
 7873                    params.text_document.uri,
 7874                    lsp::Url::from_file_path(path!("/file.rs")).unwrap()
 7875                );
 7876                futures::future::pending::<()>().await;
 7877                unreachable!()
 7878            },
 7879        );
 7880        let save = editor
 7881            .update_in(cx, |editor, window, cx| {
 7882                editor.save(true, project.clone(), window, cx)
 7883            })
 7884            .unwrap();
 7885        cx.executor().advance_clock(super::FORMAT_TIMEOUT);
 7886        cx.executor().start_waiting();
 7887        save.await;
 7888        assert_eq!(
 7889            editor.update(cx, |editor, cx| editor.text(cx)),
 7890            "one\ntwo\nthree\n"
 7891        );
 7892    }
 7893
 7894    // For non-dirty buffer, no formatting request should be sent
 7895    {
 7896        assert!(!cx.read(|cx| editor.is_dirty(cx)));
 7897
 7898        fake_server.set_request_handler::<lsp::request::Formatting, _, _>(move |_, _| async move {
 7899            panic!("Should not be invoked on non-dirty buffer");
 7900        });
 7901        let save = editor
 7902            .update_in(cx, |editor, window, cx| {
 7903                editor.save(true, project.clone(), window, cx)
 7904            })
 7905            .unwrap();
 7906        cx.executor().start_waiting();
 7907        save.await;
 7908    }
 7909
 7910    // Set rust language override and assert overridden tabsize is sent to language server
 7911    update_test_language_settings(cx, |settings| {
 7912        settings.languages.insert(
 7913            "Rust".into(),
 7914            LanguageSettingsContent {
 7915                tab_size: NonZeroU32::new(8),
 7916                ..Default::default()
 7917            },
 7918        );
 7919    });
 7920
 7921    {
 7922        editor.update_in(cx, |editor, window, cx| {
 7923            editor.set_text("somehting_new\n", window, cx)
 7924        });
 7925        assert!(cx.read(|cx| editor.is_dirty(cx)));
 7926        let _formatting_request_signal = fake_server
 7927            .set_request_handler::<lsp::request::Formatting, _, _>(move |params, _| async move {
 7928                assert_eq!(
 7929                    params.text_document.uri,
 7930                    lsp::Url::from_file_path(path!("/file.rs")).unwrap()
 7931                );
 7932                assert_eq!(params.options.tab_size, 8);
 7933                Ok(Some(vec![]))
 7934            });
 7935        let save = editor
 7936            .update_in(cx, |editor, window, cx| {
 7937                editor.save(true, project.clone(), window, cx)
 7938            })
 7939            .unwrap();
 7940        cx.executor().start_waiting();
 7941        save.await;
 7942    }
 7943}
 7944
 7945#[gpui::test]
 7946async fn test_multibuffer_format_during_save(cx: &mut TestAppContext) {
 7947    init_test(cx, |_| {});
 7948
 7949    let cols = 4;
 7950    let rows = 10;
 7951    let sample_text_1 = sample_text(rows, cols, 'a');
 7952    assert_eq!(
 7953        sample_text_1,
 7954        "aaaa\nbbbb\ncccc\ndddd\neeee\nffff\ngggg\nhhhh\niiii\njjjj"
 7955    );
 7956    let sample_text_2 = sample_text(rows, cols, 'l');
 7957    assert_eq!(
 7958        sample_text_2,
 7959        "llll\nmmmm\nnnnn\noooo\npppp\nqqqq\nrrrr\nssss\ntttt\nuuuu"
 7960    );
 7961    let sample_text_3 = sample_text(rows, cols, 'v');
 7962    assert_eq!(
 7963        sample_text_3,
 7964        "vvvv\nwwww\nxxxx\nyyyy\nzzzz\n{{{{\n||||\n}}}}\n~~~~\n\u{7f}\u{7f}\u{7f}\u{7f}"
 7965    );
 7966
 7967    let fs = FakeFs::new(cx.executor());
 7968    fs.insert_tree(
 7969        path!("/a"),
 7970        json!({
 7971            "main.rs": sample_text_1,
 7972            "other.rs": sample_text_2,
 7973            "lib.rs": sample_text_3,
 7974        }),
 7975    )
 7976    .await;
 7977
 7978    let project = Project::test(fs, [path!("/a").as_ref()], cx).await;
 7979    let workspace = cx.add_window(|window, cx| Workspace::test_new(project.clone(), window, cx));
 7980    let cx = &mut VisualTestContext::from_window(*workspace.deref(), cx);
 7981
 7982    let language_registry = project.read_with(cx, |project, _| project.languages().clone());
 7983    language_registry.add(rust_lang());
 7984    let mut fake_servers = language_registry.register_fake_lsp(
 7985        "Rust",
 7986        FakeLspAdapter {
 7987            capabilities: lsp::ServerCapabilities {
 7988                document_formatting_provider: Some(lsp::OneOf::Left(true)),
 7989                ..Default::default()
 7990            },
 7991            ..Default::default()
 7992        },
 7993    );
 7994
 7995    let worktree = project.update(cx, |project, cx| {
 7996        let mut worktrees = project.worktrees(cx).collect::<Vec<_>>();
 7997        assert_eq!(worktrees.len(), 1);
 7998        worktrees.pop().unwrap()
 7999    });
 8000    let worktree_id = worktree.update(cx, |worktree, _| worktree.id());
 8001
 8002    let buffer_1 = project
 8003        .update(cx, |project, cx| {
 8004            project.open_buffer((worktree_id, "main.rs"), cx)
 8005        })
 8006        .await
 8007        .unwrap();
 8008    let buffer_2 = project
 8009        .update(cx, |project, cx| {
 8010            project.open_buffer((worktree_id, "other.rs"), cx)
 8011        })
 8012        .await
 8013        .unwrap();
 8014    let buffer_3 = project
 8015        .update(cx, |project, cx| {
 8016            project.open_buffer((worktree_id, "lib.rs"), cx)
 8017        })
 8018        .await
 8019        .unwrap();
 8020
 8021    let multi_buffer = cx.new(|cx| {
 8022        let mut multi_buffer = MultiBuffer::new(ReadWrite);
 8023        multi_buffer.push_excerpts(
 8024            buffer_1.clone(),
 8025            [
 8026                ExcerptRange::new(Point::new(0, 0)..Point::new(3, 0)),
 8027                ExcerptRange::new(Point::new(5, 0)..Point::new(7, 0)),
 8028                ExcerptRange::new(Point::new(9, 0)..Point::new(10, 4)),
 8029            ],
 8030            cx,
 8031        );
 8032        multi_buffer.push_excerpts(
 8033            buffer_2.clone(),
 8034            [
 8035                ExcerptRange::new(Point::new(0, 0)..Point::new(3, 0)),
 8036                ExcerptRange::new(Point::new(5, 0)..Point::new(7, 0)),
 8037                ExcerptRange::new(Point::new(9, 0)..Point::new(10, 4)),
 8038            ],
 8039            cx,
 8040        );
 8041        multi_buffer.push_excerpts(
 8042            buffer_3.clone(),
 8043            [
 8044                ExcerptRange::new(Point::new(0, 0)..Point::new(3, 0)),
 8045                ExcerptRange::new(Point::new(5, 0)..Point::new(7, 0)),
 8046                ExcerptRange::new(Point::new(9, 0)..Point::new(10, 4)),
 8047            ],
 8048            cx,
 8049        );
 8050        multi_buffer
 8051    });
 8052    let multi_buffer_editor = cx.new_window_entity(|window, cx| {
 8053        Editor::new(
 8054            EditorMode::full(),
 8055            multi_buffer,
 8056            Some(project.clone()),
 8057            window,
 8058            cx,
 8059        )
 8060    });
 8061
 8062    multi_buffer_editor.update_in(cx, |editor, window, cx| {
 8063        editor.change_selections(Some(Autoscroll::Next), window, cx, |s| {
 8064            s.select_ranges(Some(1..2))
 8065        });
 8066        editor.insert("|one|two|three|", window, cx);
 8067    });
 8068    assert!(cx.read(|cx| multi_buffer_editor.is_dirty(cx)));
 8069    multi_buffer_editor.update_in(cx, |editor, window, cx| {
 8070        editor.change_selections(Some(Autoscroll::Next), window, cx, |s| {
 8071            s.select_ranges(Some(60..70))
 8072        });
 8073        editor.insert("|four|five|six|", window, cx);
 8074    });
 8075    assert!(cx.read(|cx| multi_buffer_editor.is_dirty(cx)));
 8076
 8077    // First two buffers should be edited, but not the third one.
 8078    assert_eq!(
 8079        multi_buffer_editor.update(cx, |editor, cx| editor.text(cx)),
 8080        "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}",
 8081    );
 8082    buffer_1.update(cx, |buffer, _| {
 8083        assert!(buffer.is_dirty());
 8084        assert_eq!(
 8085            buffer.text(),
 8086            "a|one|two|three|aa\nbbbb\ncccc\ndddd\neeee\nffff\ngggg\nhhhh\niiii\njjjj",
 8087        )
 8088    });
 8089    buffer_2.update(cx, |buffer, _| {
 8090        assert!(buffer.is_dirty());
 8091        assert_eq!(
 8092            buffer.text(),
 8093            "llll\nmmmm\nnnnn|four|five|six|oooo\npppp\nr\nssss\ntttt\nuuuu",
 8094        )
 8095    });
 8096    buffer_3.update(cx, |buffer, _| {
 8097        assert!(!buffer.is_dirty());
 8098        assert_eq!(buffer.text(), sample_text_3,)
 8099    });
 8100    cx.executor().run_until_parked();
 8101
 8102    cx.executor().start_waiting();
 8103    let save = multi_buffer_editor
 8104        .update_in(cx, |editor, window, cx| {
 8105            editor.save(true, project.clone(), window, cx)
 8106        })
 8107        .unwrap();
 8108
 8109    let fake_server = fake_servers.next().await.unwrap();
 8110    fake_server
 8111        .server
 8112        .on_request::<lsp::request::Formatting, _, _>(move |params, _| async move {
 8113            Ok(Some(vec![lsp::TextEdit::new(
 8114                lsp::Range::new(lsp::Position::new(0, 3), lsp::Position::new(1, 0)),
 8115                format!("[{} formatted]", params.text_document.uri),
 8116            )]))
 8117        })
 8118        .detach();
 8119    save.await;
 8120
 8121    // After multibuffer saving, only first two buffers should be reformatted, but not the third one (as it was not dirty).
 8122    assert!(cx.read(|cx| !multi_buffer_editor.is_dirty(cx)));
 8123    assert_eq!(
 8124        multi_buffer_editor.update(cx, |editor, cx| editor.text(cx)),
 8125        uri!(
 8126            "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}"
 8127        ),
 8128    );
 8129    buffer_1.update(cx, |buffer, _| {
 8130        assert!(!buffer.is_dirty());
 8131        assert_eq!(
 8132            buffer.text(),
 8133            uri!("a|o[file:///a/main.rs formatted]bbbb\ncccc\ndddd\neeee\nffff\ngggg\nhhhh\niiii\njjjj\n"),
 8134        )
 8135    });
 8136    buffer_2.update(cx, |buffer, _| {
 8137        assert!(!buffer.is_dirty());
 8138        assert_eq!(
 8139            buffer.text(),
 8140            uri!("lll[file:///a/other.rs formatted]mmmm\nnnnn|four|five|six|oooo\npppp\nr\nssss\ntttt\nuuuu\n"),
 8141        )
 8142    });
 8143    buffer_3.update(cx, |buffer, _| {
 8144        assert!(!buffer.is_dirty());
 8145        assert_eq!(buffer.text(), sample_text_3,)
 8146    });
 8147}
 8148
 8149#[gpui::test]
 8150async fn test_range_format_during_save(cx: &mut TestAppContext) {
 8151    init_test(cx, |_| {});
 8152
 8153    let fs = FakeFs::new(cx.executor());
 8154    fs.insert_file(path!("/file.rs"), Default::default()).await;
 8155
 8156    let project = Project::test(fs, [path!("/").as_ref()], cx).await;
 8157
 8158    let language_registry = project.read_with(cx, |project, _| project.languages().clone());
 8159    language_registry.add(rust_lang());
 8160    let mut fake_servers = language_registry.register_fake_lsp(
 8161        "Rust",
 8162        FakeLspAdapter {
 8163            capabilities: lsp::ServerCapabilities {
 8164                document_range_formatting_provider: Some(lsp::OneOf::Left(true)),
 8165                ..Default::default()
 8166            },
 8167            ..Default::default()
 8168        },
 8169    );
 8170
 8171    let buffer = project
 8172        .update(cx, |project, cx| {
 8173            project.open_local_buffer(path!("/file.rs"), cx)
 8174        })
 8175        .await
 8176        .unwrap();
 8177
 8178    let buffer = cx.new(|cx| MultiBuffer::singleton(buffer, cx));
 8179    let (editor, cx) = cx.add_window_view(|window, cx| {
 8180        build_editor_with_project(project.clone(), buffer, window, cx)
 8181    });
 8182    editor.update_in(cx, |editor, window, cx| {
 8183        editor.set_text("one\ntwo\nthree\n", window, cx)
 8184    });
 8185    assert!(cx.read(|cx| editor.is_dirty(cx)));
 8186
 8187    cx.executor().start_waiting();
 8188    let fake_server = fake_servers.next().await.unwrap();
 8189
 8190    let save = editor
 8191        .update_in(cx, |editor, window, cx| {
 8192            editor.save(true, project.clone(), window, cx)
 8193        })
 8194        .unwrap();
 8195    fake_server
 8196        .set_request_handler::<lsp::request::RangeFormatting, _, _>(move |params, _| async move {
 8197            assert_eq!(
 8198                params.text_document.uri,
 8199                lsp::Url::from_file_path(path!("/file.rs")).unwrap()
 8200            );
 8201            assert_eq!(params.options.tab_size, 4);
 8202            Ok(Some(vec![lsp::TextEdit::new(
 8203                lsp::Range::new(lsp::Position::new(0, 3), lsp::Position::new(1, 0)),
 8204                ", ".to_string(),
 8205            )]))
 8206        })
 8207        .next()
 8208        .await;
 8209    cx.executor().start_waiting();
 8210    save.await;
 8211    assert_eq!(
 8212        editor.update(cx, |editor, cx| editor.text(cx)),
 8213        "one, two\nthree\n"
 8214    );
 8215    assert!(!cx.read(|cx| editor.is_dirty(cx)));
 8216
 8217    editor.update_in(cx, |editor, window, cx| {
 8218        editor.set_text("one\ntwo\nthree\n", window, cx)
 8219    });
 8220    assert!(cx.read(|cx| editor.is_dirty(cx)));
 8221
 8222    // Ensure we can still save even if formatting hangs.
 8223    fake_server.set_request_handler::<lsp::request::RangeFormatting, _, _>(
 8224        move |params, _| async move {
 8225            assert_eq!(
 8226                params.text_document.uri,
 8227                lsp::Url::from_file_path(path!("/file.rs")).unwrap()
 8228            );
 8229            futures::future::pending::<()>().await;
 8230            unreachable!()
 8231        },
 8232    );
 8233    let save = editor
 8234        .update_in(cx, |editor, window, cx| {
 8235            editor.save(true, project.clone(), window, cx)
 8236        })
 8237        .unwrap();
 8238    cx.executor().advance_clock(super::FORMAT_TIMEOUT);
 8239    cx.executor().start_waiting();
 8240    save.await;
 8241    assert_eq!(
 8242        editor.update(cx, |editor, cx| editor.text(cx)),
 8243        "one\ntwo\nthree\n"
 8244    );
 8245    assert!(!cx.read(|cx| editor.is_dirty(cx)));
 8246
 8247    // For non-dirty buffer, no formatting request should be sent
 8248    let save = editor
 8249        .update_in(cx, |editor, window, cx| {
 8250            editor.save(true, project.clone(), window, cx)
 8251        })
 8252        .unwrap();
 8253    let _pending_format_request = fake_server
 8254        .set_request_handler::<lsp::request::RangeFormatting, _, _>(move |_, _| async move {
 8255            panic!("Should not be invoked on non-dirty buffer");
 8256        })
 8257        .next();
 8258    cx.executor().start_waiting();
 8259    save.await;
 8260
 8261    // Set Rust language override and assert overridden tabsize is sent to language server
 8262    update_test_language_settings(cx, |settings| {
 8263        settings.languages.insert(
 8264            "Rust".into(),
 8265            LanguageSettingsContent {
 8266                tab_size: NonZeroU32::new(8),
 8267                ..Default::default()
 8268            },
 8269        );
 8270    });
 8271
 8272    editor.update_in(cx, |editor, window, cx| {
 8273        editor.set_text("somehting_new\n", window, cx)
 8274    });
 8275    assert!(cx.read(|cx| editor.is_dirty(cx)));
 8276    let save = editor
 8277        .update_in(cx, |editor, window, cx| {
 8278            editor.save(true, project.clone(), window, cx)
 8279        })
 8280        .unwrap();
 8281    fake_server
 8282        .set_request_handler::<lsp::request::RangeFormatting, _, _>(move |params, _| async move {
 8283            assert_eq!(
 8284                params.text_document.uri,
 8285                lsp::Url::from_file_path(path!("/file.rs")).unwrap()
 8286            );
 8287            assert_eq!(params.options.tab_size, 8);
 8288            Ok(Some(vec![]))
 8289        })
 8290        .next()
 8291        .await;
 8292    cx.executor().start_waiting();
 8293    save.await;
 8294}
 8295
 8296#[gpui::test]
 8297async fn test_document_format_manual_trigger(cx: &mut TestAppContext) {
 8298    init_test(cx, |settings| {
 8299        settings.defaults.formatter = Some(language_settings::SelectedFormatter::List(
 8300            FormatterList(vec![Formatter::LanguageServer { name: None }].into()),
 8301        ))
 8302    });
 8303
 8304    let fs = FakeFs::new(cx.executor());
 8305    fs.insert_file(path!("/file.rs"), Default::default()).await;
 8306
 8307    let project = Project::test(fs, [path!("/").as_ref()], cx).await;
 8308
 8309    let language_registry = project.read_with(cx, |project, _| project.languages().clone());
 8310    language_registry.add(Arc::new(Language::new(
 8311        LanguageConfig {
 8312            name: "Rust".into(),
 8313            matcher: LanguageMatcher {
 8314                path_suffixes: vec!["rs".to_string()],
 8315                ..Default::default()
 8316            },
 8317            ..LanguageConfig::default()
 8318        },
 8319        Some(tree_sitter_rust::LANGUAGE.into()),
 8320    )));
 8321    update_test_language_settings(cx, |settings| {
 8322        // Enable Prettier formatting for the same buffer, and ensure
 8323        // LSP is called instead of Prettier.
 8324        settings.defaults.prettier = Some(PrettierSettings {
 8325            allowed: true,
 8326            ..PrettierSettings::default()
 8327        });
 8328    });
 8329    let mut fake_servers = language_registry.register_fake_lsp(
 8330        "Rust",
 8331        FakeLspAdapter {
 8332            capabilities: lsp::ServerCapabilities {
 8333                document_formatting_provider: Some(lsp::OneOf::Left(true)),
 8334                ..Default::default()
 8335            },
 8336            ..Default::default()
 8337        },
 8338    );
 8339
 8340    let buffer = project
 8341        .update(cx, |project, cx| {
 8342            project.open_local_buffer(path!("/file.rs"), cx)
 8343        })
 8344        .await
 8345        .unwrap();
 8346
 8347    let buffer = cx.new(|cx| MultiBuffer::singleton(buffer, cx));
 8348    let (editor, cx) = cx.add_window_view(|window, cx| {
 8349        build_editor_with_project(project.clone(), buffer, window, cx)
 8350    });
 8351    editor.update_in(cx, |editor, window, cx| {
 8352        editor.set_text("one\ntwo\nthree\n", window, cx)
 8353    });
 8354
 8355    cx.executor().start_waiting();
 8356    let fake_server = fake_servers.next().await.unwrap();
 8357
 8358    let format = editor
 8359        .update_in(cx, |editor, window, cx| {
 8360            editor.perform_format(
 8361                project.clone(),
 8362                FormatTrigger::Manual,
 8363                FormatTarget::Buffers,
 8364                window,
 8365                cx,
 8366            )
 8367        })
 8368        .unwrap();
 8369    fake_server
 8370        .set_request_handler::<lsp::request::Formatting, _, _>(move |params, _| async move {
 8371            assert_eq!(
 8372                params.text_document.uri,
 8373                lsp::Url::from_file_path(path!("/file.rs")).unwrap()
 8374            );
 8375            assert_eq!(params.options.tab_size, 4);
 8376            Ok(Some(vec![lsp::TextEdit::new(
 8377                lsp::Range::new(lsp::Position::new(0, 3), lsp::Position::new(1, 0)),
 8378                ", ".to_string(),
 8379            )]))
 8380        })
 8381        .next()
 8382        .await;
 8383    cx.executor().start_waiting();
 8384    format.await;
 8385    assert_eq!(
 8386        editor.update(cx, |editor, cx| editor.text(cx)),
 8387        "one, two\nthree\n"
 8388    );
 8389
 8390    editor.update_in(cx, |editor, window, cx| {
 8391        editor.set_text("one\ntwo\nthree\n", window, cx)
 8392    });
 8393    // Ensure we don't lock if formatting hangs.
 8394    fake_server.set_request_handler::<lsp::request::Formatting, _, _>(
 8395        move |params, _| async move {
 8396            assert_eq!(
 8397                params.text_document.uri,
 8398                lsp::Url::from_file_path(path!("/file.rs")).unwrap()
 8399            );
 8400            futures::future::pending::<()>().await;
 8401            unreachable!()
 8402        },
 8403    );
 8404    let format = editor
 8405        .update_in(cx, |editor, window, cx| {
 8406            editor.perform_format(
 8407                project,
 8408                FormatTrigger::Manual,
 8409                FormatTarget::Buffers,
 8410                window,
 8411                cx,
 8412            )
 8413        })
 8414        .unwrap();
 8415    cx.executor().advance_clock(super::FORMAT_TIMEOUT);
 8416    cx.executor().start_waiting();
 8417    format.await;
 8418    assert_eq!(
 8419        editor.update(cx, |editor, cx| editor.text(cx)),
 8420        "one\ntwo\nthree\n"
 8421    );
 8422}
 8423
 8424#[gpui::test]
 8425async fn test_multiple_formatters(cx: &mut TestAppContext) {
 8426    init_test(cx, |settings| {
 8427        settings.defaults.remove_trailing_whitespace_on_save = Some(true);
 8428        settings.defaults.formatter =
 8429            Some(language_settings::SelectedFormatter::List(FormatterList(
 8430                vec![
 8431                    Formatter::LanguageServer { name: None },
 8432                    Formatter::CodeActions(
 8433                        [
 8434                            ("code-action-1".into(), true),
 8435                            ("code-action-2".into(), true),
 8436                        ]
 8437                        .into_iter()
 8438                        .collect(),
 8439                    ),
 8440                ]
 8441                .into(),
 8442            )))
 8443    });
 8444
 8445    let fs = FakeFs::new(cx.executor());
 8446    fs.insert_file(path!("/file.rs"), "one  \ntwo   \nthree".into())
 8447        .await;
 8448
 8449    let project = Project::test(fs, [path!("/").as_ref()], cx).await;
 8450    let language_registry = project.read_with(cx, |project, _| project.languages().clone());
 8451    language_registry.add(rust_lang());
 8452
 8453    let mut fake_servers = language_registry.register_fake_lsp(
 8454        "Rust",
 8455        FakeLspAdapter {
 8456            capabilities: lsp::ServerCapabilities {
 8457                document_formatting_provider: Some(lsp::OneOf::Left(true)),
 8458                execute_command_provider: Some(lsp::ExecuteCommandOptions {
 8459                    commands: vec!["the-command-for-code-action-1".into()],
 8460                    ..Default::default()
 8461                }),
 8462                code_action_provider: Some(lsp::CodeActionProviderCapability::Simple(true)),
 8463                ..Default::default()
 8464            },
 8465            ..Default::default()
 8466        },
 8467    );
 8468
 8469    let buffer = project
 8470        .update(cx, |project, cx| {
 8471            project.open_local_buffer(path!("/file.rs"), cx)
 8472        })
 8473        .await
 8474        .unwrap();
 8475
 8476    let buffer = cx.new(|cx| MultiBuffer::singleton(buffer, cx));
 8477    let (editor, cx) = cx.add_window_view(|window, cx| {
 8478        build_editor_with_project(project.clone(), buffer, window, cx)
 8479    });
 8480
 8481    cx.executor().start_waiting();
 8482
 8483    let fake_server = fake_servers.next().await.unwrap();
 8484    fake_server.set_request_handler::<lsp::request::Formatting, _, _>(
 8485        move |_params, _| async move {
 8486            Ok(Some(vec![lsp::TextEdit::new(
 8487                lsp::Range::new(lsp::Position::new(0, 0), lsp::Position::new(0, 0)),
 8488                "applied-formatting\n".to_string(),
 8489            )]))
 8490        },
 8491    );
 8492    fake_server.set_request_handler::<lsp::request::CodeActionRequest, _, _>(
 8493        move |params, _| async move {
 8494            assert_eq!(
 8495                params.context.only,
 8496                Some(vec!["code-action-1".into(), "code-action-2".into()])
 8497            );
 8498            let uri = lsp::Url::from_file_path(path!("/file.rs")).unwrap();
 8499            Ok(Some(vec![
 8500                lsp::CodeActionOrCommand::CodeAction(lsp::CodeAction {
 8501                    kind: Some("code-action-1".into()),
 8502                    edit: Some(lsp::WorkspaceEdit::new(
 8503                        [(
 8504                            uri.clone(),
 8505                            vec![lsp::TextEdit::new(
 8506                                lsp::Range::new(lsp::Position::new(0, 0), lsp::Position::new(0, 0)),
 8507                                "applied-code-action-1-edit\n".to_string(),
 8508                            )],
 8509                        )]
 8510                        .into_iter()
 8511                        .collect(),
 8512                    )),
 8513                    command: Some(lsp::Command {
 8514                        command: "the-command-for-code-action-1".into(),
 8515                        ..Default::default()
 8516                    }),
 8517                    ..Default::default()
 8518                }),
 8519                lsp::CodeActionOrCommand::CodeAction(lsp::CodeAction {
 8520                    kind: Some("code-action-2".into()),
 8521                    edit: Some(lsp::WorkspaceEdit::new(
 8522                        [(
 8523                            uri.clone(),
 8524                            vec![lsp::TextEdit::new(
 8525                                lsp::Range::new(lsp::Position::new(0, 0), lsp::Position::new(0, 0)),
 8526                                "applied-code-action-2-edit\n".to_string(),
 8527                            )],
 8528                        )]
 8529                        .into_iter()
 8530                        .collect(),
 8531                    )),
 8532                    ..Default::default()
 8533                }),
 8534            ]))
 8535        },
 8536    );
 8537
 8538    fake_server.set_request_handler::<lsp::request::CodeActionResolveRequest, _, _>({
 8539        move |params, _| async move { Ok(params) }
 8540    });
 8541
 8542    let command_lock = Arc::new(futures::lock::Mutex::new(()));
 8543    fake_server.set_request_handler::<lsp::request::ExecuteCommand, _, _>({
 8544        let fake = fake_server.clone();
 8545        let lock = command_lock.clone();
 8546        move |params, _| {
 8547            assert_eq!(params.command, "the-command-for-code-action-1");
 8548            let fake = fake.clone();
 8549            let lock = lock.clone();
 8550            async move {
 8551                lock.lock().await;
 8552                fake.server
 8553                    .request::<lsp::request::ApplyWorkspaceEdit>(lsp::ApplyWorkspaceEditParams {
 8554                        label: None,
 8555                        edit: lsp::WorkspaceEdit {
 8556                            changes: Some(
 8557                                [(
 8558                                    lsp::Url::from_file_path(path!("/file.rs")).unwrap(),
 8559                                    vec![lsp::TextEdit {
 8560                                        range: lsp::Range::new(
 8561                                            lsp::Position::new(0, 0),
 8562                                            lsp::Position::new(0, 0),
 8563                                        ),
 8564                                        new_text: "applied-code-action-1-command\n".into(),
 8565                                    }],
 8566                                )]
 8567                                .into_iter()
 8568                                .collect(),
 8569                            ),
 8570                            ..Default::default()
 8571                        },
 8572                    })
 8573                    .await
 8574                    .unwrap();
 8575                Ok(Some(json!(null)))
 8576            }
 8577        }
 8578    });
 8579
 8580    cx.executor().start_waiting();
 8581    editor
 8582        .update_in(cx, |editor, window, cx| {
 8583            editor.perform_format(
 8584                project.clone(),
 8585                FormatTrigger::Manual,
 8586                FormatTarget::Buffers,
 8587                window,
 8588                cx,
 8589            )
 8590        })
 8591        .unwrap()
 8592        .await;
 8593    editor.update(cx, |editor, cx| {
 8594        assert_eq!(
 8595            editor.text(cx),
 8596            r#"
 8597                applied-code-action-2-edit
 8598                applied-code-action-1-command
 8599                applied-code-action-1-edit
 8600                applied-formatting
 8601                one
 8602                two
 8603                three
 8604            "#
 8605            .unindent()
 8606        );
 8607    });
 8608
 8609    editor.update_in(cx, |editor, window, cx| {
 8610        editor.undo(&Default::default(), window, cx);
 8611        assert_eq!(editor.text(cx), "one  \ntwo   \nthree");
 8612    });
 8613
 8614    // Perform a manual edit while waiting for an LSP command
 8615    // that's being run as part of a formatting code action.
 8616    let lock_guard = command_lock.lock().await;
 8617    let format = editor
 8618        .update_in(cx, |editor, window, cx| {
 8619            editor.perform_format(
 8620                project.clone(),
 8621                FormatTrigger::Manual,
 8622                FormatTarget::Buffers,
 8623                window,
 8624                cx,
 8625            )
 8626        })
 8627        .unwrap();
 8628    cx.run_until_parked();
 8629    editor.update(cx, |editor, cx| {
 8630        assert_eq!(
 8631            editor.text(cx),
 8632            r#"
 8633                applied-code-action-1-edit
 8634                applied-formatting
 8635                one
 8636                two
 8637                three
 8638            "#
 8639            .unindent()
 8640        );
 8641
 8642        editor.buffer.update(cx, |buffer, cx| {
 8643            let ix = buffer.len(cx);
 8644            buffer.edit([(ix..ix, "edited\n")], None, cx);
 8645        });
 8646    });
 8647
 8648    // Allow the LSP command to proceed. Because the buffer was edited,
 8649    // the second code action will not be run.
 8650    drop(lock_guard);
 8651    format.await;
 8652    editor.update_in(cx, |editor, window, cx| {
 8653        assert_eq!(
 8654            editor.text(cx),
 8655            r#"
 8656                applied-code-action-1-command
 8657                applied-code-action-1-edit
 8658                applied-formatting
 8659                one
 8660                two
 8661                three
 8662                edited
 8663            "#
 8664            .unindent()
 8665        );
 8666
 8667        // The manual edit is undone first, because it is the last thing the user did
 8668        // (even though the command completed afterwards).
 8669        editor.undo(&Default::default(), window, cx);
 8670        assert_eq!(
 8671            editor.text(cx),
 8672            r#"
 8673                applied-code-action-1-command
 8674                applied-code-action-1-edit
 8675                applied-formatting
 8676                one
 8677                two
 8678                three
 8679            "#
 8680            .unindent()
 8681        );
 8682
 8683        // All the formatting (including the command, which completed after the manual edit)
 8684        // is undone together.
 8685        editor.undo(&Default::default(), window, cx);
 8686        assert_eq!(editor.text(cx), "one  \ntwo   \nthree");
 8687    });
 8688}
 8689
 8690#[gpui::test]
 8691async fn test_organize_imports_manual_trigger(cx: &mut TestAppContext) {
 8692    init_test(cx, |settings| {
 8693        settings.defaults.formatter = Some(language_settings::SelectedFormatter::List(
 8694            FormatterList(vec![Formatter::LanguageServer { name: None }].into()),
 8695        ))
 8696    });
 8697
 8698    let fs = FakeFs::new(cx.executor());
 8699    fs.insert_file(path!("/file.ts"), Default::default()).await;
 8700
 8701    let project = Project::test(fs, [path!("/").as_ref()], cx).await;
 8702
 8703    let language_registry = project.read_with(cx, |project, _| project.languages().clone());
 8704    language_registry.add(Arc::new(Language::new(
 8705        LanguageConfig {
 8706            name: "TypeScript".into(),
 8707            matcher: LanguageMatcher {
 8708                path_suffixes: vec!["ts".to_string()],
 8709                ..Default::default()
 8710            },
 8711            ..LanguageConfig::default()
 8712        },
 8713        Some(tree_sitter_typescript::LANGUAGE_TYPESCRIPT.into()),
 8714    )));
 8715    update_test_language_settings(cx, |settings| {
 8716        settings.defaults.prettier = Some(PrettierSettings {
 8717            allowed: true,
 8718            ..PrettierSettings::default()
 8719        });
 8720    });
 8721    let mut fake_servers = language_registry.register_fake_lsp(
 8722        "TypeScript",
 8723        FakeLspAdapter {
 8724            capabilities: lsp::ServerCapabilities {
 8725                code_action_provider: Some(lsp::CodeActionProviderCapability::Simple(true)),
 8726                ..Default::default()
 8727            },
 8728            ..Default::default()
 8729        },
 8730    );
 8731
 8732    let buffer = project
 8733        .update(cx, |project, cx| {
 8734            project.open_local_buffer(path!("/file.ts"), cx)
 8735        })
 8736        .await
 8737        .unwrap();
 8738
 8739    let buffer = cx.new(|cx| MultiBuffer::singleton(buffer, cx));
 8740    let (editor, cx) = cx.add_window_view(|window, cx| {
 8741        build_editor_with_project(project.clone(), buffer, window, cx)
 8742    });
 8743    editor.update_in(cx, |editor, window, cx| {
 8744        editor.set_text(
 8745            "import { a } from 'module';\nimport { b } from 'module';\n\nconst x = a;\n",
 8746            window,
 8747            cx,
 8748        )
 8749    });
 8750
 8751    cx.executor().start_waiting();
 8752    let fake_server = fake_servers.next().await.unwrap();
 8753
 8754    let format = editor
 8755        .update_in(cx, |editor, window, cx| {
 8756            editor.perform_code_action_kind(
 8757                project.clone(),
 8758                CodeActionKind::SOURCE_ORGANIZE_IMPORTS,
 8759                window,
 8760                cx,
 8761            )
 8762        })
 8763        .unwrap();
 8764    fake_server
 8765        .set_request_handler::<lsp::request::CodeActionRequest, _, _>(move |params, _| async move {
 8766            assert_eq!(
 8767                params.text_document.uri,
 8768                lsp::Url::from_file_path(path!("/file.ts")).unwrap()
 8769            );
 8770            Ok(Some(vec![lsp::CodeActionOrCommand::CodeAction(
 8771                lsp::CodeAction {
 8772                    title: "Organize Imports".to_string(),
 8773                    kind: Some(lsp::CodeActionKind::SOURCE_ORGANIZE_IMPORTS),
 8774                    edit: Some(lsp::WorkspaceEdit {
 8775                        changes: Some(
 8776                            [(
 8777                                params.text_document.uri.clone(),
 8778                                vec![lsp::TextEdit::new(
 8779                                    lsp::Range::new(
 8780                                        lsp::Position::new(1, 0),
 8781                                        lsp::Position::new(2, 0),
 8782                                    ),
 8783                                    "".to_string(),
 8784                                )],
 8785                            )]
 8786                            .into_iter()
 8787                            .collect(),
 8788                        ),
 8789                        ..Default::default()
 8790                    }),
 8791                    ..Default::default()
 8792                },
 8793            )]))
 8794        })
 8795        .next()
 8796        .await;
 8797    cx.executor().start_waiting();
 8798    format.await;
 8799    assert_eq!(
 8800        editor.update(cx, |editor, cx| editor.text(cx)),
 8801        "import { a } from 'module';\n\nconst x = a;\n"
 8802    );
 8803
 8804    editor.update_in(cx, |editor, window, cx| {
 8805        editor.set_text(
 8806            "import { a } from 'module';\nimport { b } from 'module';\n\nconst x = a;\n",
 8807            window,
 8808            cx,
 8809        )
 8810    });
 8811    // Ensure we don't lock if code action hangs.
 8812    fake_server.set_request_handler::<lsp::request::CodeActionRequest, _, _>(
 8813        move |params, _| async move {
 8814            assert_eq!(
 8815                params.text_document.uri,
 8816                lsp::Url::from_file_path(path!("/file.ts")).unwrap()
 8817            );
 8818            futures::future::pending::<()>().await;
 8819            unreachable!()
 8820        },
 8821    );
 8822    let format = editor
 8823        .update_in(cx, |editor, window, cx| {
 8824            editor.perform_code_action_kind(
 8825                project,
 8826                CodeActionKind::SOURCE_ORGANIZE_IMPORTS,
 8827                window,
 8828                cx,
 8829            )
 8830        })
 8831        .unwrap();
 8832    cx.executor().advance_clock(super::CODE_ACTION_TIMEOUT);
 8833    cx.executor().start_waiting();
 8834    format.await;
 8835    assert_eq!(
 8836        editor.update(cx, |editor, cx| editor.text(cx)),
 8837        "import { a } from 'module';\nimport { b } from 'module';\n\nconst x = a;\n"
 8838    );
 8839}
 8840
 8841#[gpui::test]
 8842async fn test_concurrent_format_requests(cx: &mut TestAppContext) {
 8843    init_test(cx, |_| {});
 8844
 8845    let mut cx = EditorLspTestContext::new_rust(
 8846        lsp::ServerCapabilities {
 8847            document_formatting_provider: Some(lsp::OneOf::Left(true)),
 8848            ..Default::default()
 8849        },
 8850        cx,
 8851    )
 8852    .await;
 8853
 8854    cx.set_state(indoc! {"
 8855        one.twoˇ
 8856    "});
 8857
 8858    // The format request takes a long time. When it completes, it inserts
 8859    // a newline and an indent before the `.`
 8860    cx.lsp
 8861        .set_request_handler::<lsp::request::Formatting, _, _>(move |_, cx| {
 8862            let executor = cx.background_executor().clone();
 8863            async move {
 8864                executor.timer(Duration::from_millis(100)).await;
 8865                Ok(Some(vec![lsp::TextEdit {
 8866                    range: lsp::Range::new(lsp::Position::new(0, 3), lsp::Position::new(0, 3)),
 8867                    new_text: "\n    ".into(),
 8868                }]))
 8869            }
 8870        });
 8871
 8872    // Submit a format request.
 8873    let format_1 = cx
 8874        .update_editor(|editor, window, cx| editor.format(&Format, window, cx))
 8875        .unwrap();
 8876    cx.executor().run_until_parked();
 8877
 8878    // Submit a second format request.
 8879    let format_2 = cx
 8880        .update_editor(|editor, window, cx| editor.format(&Format, window, cx))
 8881        .unwrap();
 8882    cx.executor().run_until_parked();
 8883
 8884    // Wait for both format requests to complete
 8885    cx.executor().advance_clock(Duration::from_millis(200));
 8886    cx.executor().start_waiting();
 8887    format_1.await.unwrap();
 8888    cx.executor().start_waiting();
 8889    format_2.await.unwrap();
 8890
 8891    // The formatting edits only happens once.
 8892    cx.assert_editor_state(indoc! {"
 8893        one
 8894            .twoˇ
 8895    "});
 8896}
 8897
 8898#[gpui::test]
 8899async fn test_strip_whitespace_and_format_via_lsp(cx: &mut TestAppContext) {
 8900    init_test(cx, |settings| {
 8901        settings.defaults.formatter = Some(language_settings::SelectedFormatter::Auto)
 8902    });
 8903
 8904    let mut cx = EditorLspTestContext::new_rust(
 8905        lsp::ServerCapabilities {
 8906            document_formatting_provider: Some(lsp::OneOf::Left(true)),
 8907            ..Default::default()
 8908        },
 8909        cx,
 8910    )
 8911    .await;
 8912
 8913    // Set up a buffer white some trailing whitespace and no trailing newline.
 8914    cx.set_state(
 8915        &[
 8916            "one ",   //
 8917            "twoˇ",   //
 8918            "three ", //
 8919            "four",   //
 8920        ]
 8921        .join("\n"),
 8922    );
 8923
 8924    // Submit a format request.
 8925    let format = cx
 8926        .update_editor(|editor, window, cx| editor.format(&Format, window, cx))
 8927        .unwrap();
 8928
 8929    // Record which buffer changes have been sent to the language server
 8930    let buffer_changes = Arc::new(Mutex::new(Vec::new()));
 8931    cx.lsp
 8932        .handle_notification::<lsp::notification::DidChangeTextDocument, _>({
 8933            let buffer_changes = buffer_changes.clone();
 8934            move |params, _| {
 8935                buffer_changes.lock().extend(
 8936                    params
 8937                        .content_changes
 8938                        .into_iter()
 8939                        .map(|e| (e.range.unwrap(), e.text)),
 8940                );
 8941            }
 8942        });
 8943
 8944    // Handle formatting requests to the language server.
 8945    cx.lsp
 8946        .set_request_handler::<lsp::request::Formatting, _, _>({
 8947            let buffer_changes = buffer_changes.clone();
 8948            move |_, _| {
 8949                // When formatting is requested, trailing whitespace has already been stripped,
 8950                // and the trailing newline has already been added.
 8951                assert_eq!(
 8952                    &buffer_changes.lock()[1..],
 8953                    &[
 8954                        (
 8955                            lsp::Range::new(lsp::Position::new(0, 3), lsp::Position::new(0, 4)),
 8956                            "".into()
 8957                        ),
 8958                        (
 8959                            lsp::Range::new(lsp::Position::new(2, 5), lsp::Position::new(2, 6)),
 8960                            "".into()
 8961                        ),
 8962                        (
 8963                            lsp::Range::new(lsp::Position::new(3, 4), lsp::Position::new(3, 4)),
 8964                            "\n".into()
 8965                        ),
 8966                    ]
 8967                );
 8968
 8969                // Insert blank lines between each line of the buffer.
 8970                async move {
 8971                    Ok(Some(vec![
 8972                        lsp::TextEdit {
 8973                            range: lsp::Range::new(
 8974                                lsp::Position::new(1, 0),
 8975                                lsp::Position::new(1, 0),
 8976                            ),
 8977                            new_text: "\n".into(),
 8978                        },
 8979                        lsp::TextEdit {
 8980                            range: lsp::Range::new(
 8981                                lsp::Position::new(2, 0),
 8982                                lsp::Position::new(2, 0),
 8983                            ),
 8984                            new_text: "\n".into(),
 8985                        },
 8986                    ]))
 8987                }
 8988            }
 8989        });
 8990
 8991    // After formatting the buffer, the trailing whitespace is stripped,
 8992    // a newline is appended, and the edits provided by the language server
 8993    // have been applied.
 8994    format.await.unwrap();
 8995    cx.assert_editor_state(
 8996        &[
 8997            "one",   //
 8998            "",      //
 8999            "twoˇ",  //
 9000            "",      //
 9001            "three", //
 9002            "four",  //
 9003            "",      //
 9004        ]
 9005        .join("\n"),
 9006    );
 9007
 9008    // Undoing the formatting undoes the trailing whitespace removal, the
 9009    // trailing newline, and the LSP edits.
 9010    cx.update_buffer(|buffer, cx| buffer.undo(cx));
 9011    cx.assert_editor_state(
 9012        &[
 9013            "one ",   //
 9014            "twoˇ",   //
 9015            "three ", //
 9016            "four",   //
 9017        ]
 9018        .join("\n"),
 9019    );
 9020}
 9021
 9022#[gpui::test]
 9023async fn test_handle_input_for_show_signature_help_auto_signature_help_true(
 9024    cx: &mut TestAppContext,
 9025) {
 9026    init_test(cx, |_| {});
 9027
 9028    cx.update(|cx| {
 9029        cx.update_global::<SettingsStore, _>(|settings, cx| {
 9030            settings.update_user_settings::<EditorSettings>(cx, |settings| {
 9031                settings.auto_signature_help = Some(true);
 9032            });
 9033        });
 9034    });
 9035
 9036    let mut cx = EditorLspTestContext::new_rust(
 9037        lsp::ServerCapabilities {
 9038            signature_help_provider: Some(lsp::SignatureHelpOptions {
 9039                ..Default::default()
 9040            }),
 9041            ..Default::default()
 9042        },
 9043        cx,
 9044    )
 9045    .await;
 9046
 9047    let language = Language::new(
 9048        LanguageConfig {
 9049            name: "Rust".into(),
 9050            brackets: BracketPairConfig {
 9051                pairs: vec![
 9052                    BracketPair {
 9053                        start: "{".to_string(),
 9054                        end: "}".to_string(),
 9055                        close: true,
 9056                        surround: true,
 9057                        newline: true,
 9058                    },
 9059                    BracketPair {
 9060                        start: "(".to_string(),
 9061                        end: ")".to_string(),
 9062                        close: true,
 9063                        surround: true,
 9064                        newline: true,
 9065                    },
 9066                    BracketPair {
 9067                        start: "/*".to_string(),
 9068                        end: " */".to_string(),
 9069                        close: true,
 9070                        surround: true,
 9071                        newline: true,
 9072                    },
 9073                    BracketPair {
 9074                        start: "[".to_string(),
 9075                        end: "]".to_string(),
 9076                        close: false,
 9077                        surround: false,
 9078                        newline: true,
 9079                    },
 9080                    BracketPair {
 9081                        start: "\"".to_string(),
 9082                        end: "\"".to_string(),
 9083                        close: true,
 9084                        surround: true,
 9085                        newline: false,
 9086                    },
 9087                    BracketPair {
 9088                        start: "<".to_string(),
 9089                        end: ">".to_string(),
 9090                        close: false,
 9091                        surround: true,
 9092                        newline: true,
 9093                    },
 9094                ],
 9095                ..Default::default()
 9096            },
 9097            autoclose_before: "})]".to_string(),
 9098            ..Default::default()
 9099        },
 9100        Some(tree_sitter_rust::LANGUAGE.into()),
 9101    );
 9102    let language = Arc::new(language);
 9103
 9104    cx.language_registry().add(language.clone());
 9105    cx.update_buffer(|buffer, cx| {
 9106        buffer.set_language(Some(language), cx);
 9107    });
 9108
 9109    cx.set_state(
 9110        &r#"
 9111            fn main() {
 9112                sampleˇ
 9113            }
 9114        "#
 9115        .unindent(),
 9116    );
 9117
 9118    cx.update_editor(|editor, window, cx| {
 9119        editor.handle_input("(", window, cx);
 9120    });
 9121    cx.assert_editor_state(
 9122        &"
 9123            fn main() {
 9124                sample(ˇ)
 9125            }
 9126        "
 9127        .unindent(),
 9128    );
 9129
 9130    let mocked_response = lsp::SignatureHelp {
 9131        signatures: vec![lsp::SignatureInformation {
 9132            label: "fn sample(param1: u8, param2: u8)".to_string(),
 9133            documentation: None,
 9134            parameters: Some(vec![
 9135                lsp::ParameterInformation {
 9136                    label: lsp::ParameterLabel::Simple("param1: u8".to_string()),
 9137                    documentation: None,
 9138                },
 9139                lsp::ParameterInformation {
 9140                    label: lsp::ParameterLabel::Simple("param2: u8".to_string()),
 9141                    documentation: None,
 9142                },
 9143            ]),
 9144            active_parameter: None,
 9145        }],
 9146        active_signature: Some(0),
 9147        active_parameter: Some(0),
 9148    };
 9149    handle_signature_help_request(&mut cx, mocked_response).await;
 9150
 9151    cx.condition(|editor, _| editor.signature_help_state.is_shown())
 9152        .await;
 9153
 9154    cx.editor(|editor, _, _| {
 9155        let signature_help_state = editor.signature_help_state.popover().cloned();
 9156        assert_eq!(
 9157            signature_help_state.unwrap().label,
 9158            "param1: u8, param2: u8"
 9159        );
 9160    });
 9161}
 9162
 9163#[gpui::test]
 9164async fn test_handle_input_with_different_show_signature_settings(cx: &mut TestAppContext) {
 9165    init_test(cx, |_| {});
 9166
 9167    cx.update(|cx| {
 9168        cx.update_global::<SettingsStore, _>(|settings, cx| {
 9169            settings.update_user_settings::<EditorSettings>(cx, |settings| {
 9170                settings.auto_signature_help = Some(false);
 9171                settings.show_signature_help_after_edits = Some(false);
 9172            });
 9173        });
 9174    });
 9175
 9176    let mut cx = EditorLspTestContext::new_rust(
 9177        lsp::ServerCapabilities {
 9178            signature_help_provider: Some(lsp::SignatureHelpOptions {
 9179                ..Default::default()
 9180            }),
 9181            ..Default::default()
 9182        },
 9183        cx,
 9184    )
 9185    .await;
 9186
 9187    let language = Language::new(
 9188        LanguageConfig {
 9189            name: "Rust".into(),
 9190            brackets: BracketPairConfig {
 9191                pairs: vec![
 9192                    BracketPair {
 9193                        start: "{".to_string(),
 9194                        end: "}".to_string(),
 9195                        close: true,
 9196                        surround: true,
 9197                        newline: true,
 9198                    },
 9199                    BracketPair {
 9200                        start: "(".to_string(),
 9201                        end: ")".to_string(),
 9202                        close: true,
 9203                        surround: true,
 9204                        newline: true,
 9205                    },
 9206                    BracketPair {
 9207                        start: "/*".to_string(),
 9208                        end: " */".to_string(),
 9209                        close: true,
 9210                        surround: true,
 9211                        newline: true,
 9212                    },
 9213                    BracketPair {
 9214                        start: "[".to_string(),
 9215                        end: "]".to_string(),
 9216                        close: false,
 9217                        surround: false,
 9218                        newline: true,
 9219                    },
 9220                    BracketPair {
 9221                        start: "\"".to_string(),
 9222                        end: "\"".to_string(),
 9223                        close: true,
 9224                        surround: true,
 9225                        newline: false,
 9226                    },
 9227                    BracketPair {
 9228                        start: "<".to_string(),
 9229                        end: ">".to_string(),
 9230                        close: false,
 9231                        surround: true,
 9232                        newline: true,
 9233                    },
 9234                ],
 9235                ..Default::default()
 9236            },
 9237            autoclose_before: "})]".to_string(),
 9238            ..Default::default()
 9239        },
 9240        Some(tree_sitter_rust::LANGUAGE.into()),
 9241    );
 9242    let language = Arc::new(language);
 9243
 9244    cx.language_registry().add(language.clone());
 9245    cx.update_buffer(|buffer, cx| {
 9246        buffer.set_language(Some(language), cx);
 9247    });
 9248
 9249    // Ensure that signature_help is not called when no signature help is enabled.
 9250    cx.set_state(
 9251        &r#"
 9252            fn main() {
 9253                sampleˇ
 9254            }
 9255        "#
 9256        .unindent(),
 9257    );
 9258    cx.update_editor(|editor, window, cx| {
 9259        editor.handle_input("(", window, cx);
 9260    });
 9261    cx.assert_editor_state(
 9262        &"
 9263            fn main() {
 9264                sample(ˇ)
 9265            }
 9266        "
 9267        .unindent(),
 9268    );
 9269    cx.editor(|editor, _, _| {
 9270        assert!(editor.signature_help_state.task().is_none());
 9271    });
 9272
 9273    let mocked_response = lsp::SignatureHelp {
 9274        signatures: vec![lsp::SignatureInformation {
 9275            label: "fn sample(param1: u8, param2: u8)".to_string(),
 9276            documentation: None,
 9277            parameters: Some(vec![
 9278                lsp::ParameterInformation {
 9279                    label: lsp::ParameterLabel::Simple("param1: u8".to_string()),
 9280                    documentation: None,
 9281                },
 9282                lsp::ParameterInformation {
 9283                    label: lsp::ParameterLabel::Simple("param2: u8".to_string()),
 9284                    documentation: None,
 9285                },
 9286            ]),
 9287            active_parameter: None,
 9288        }],
 9289        active_signature: Some(0),
 9290        active_parameter: Some(0),
 9291    };
 9292
 9293    // Ensure that signature_help is called when enabled afte edits
 9294    cx.update(|_, cx| {
 9295        cx.update_global::<SettingsStore, _>(|settings, cx| {
 9296            settings.update_user_settings::<EditorSettings>(cx, |settings| {
 9297                settings.auto_signature_help = Some(false);
 9298                settings.show_signature_help_after_edits = Some(true);
 9299            });
 9300        });
 9301    });
 9302    cx.set_state(
 9303        &r#"
 9304            fn main() {
 9305                sampleˇ
 9306            }
 9307        "#
 9308        .unindent(),
 9309    );
 9310    cx.update_editor(|editor, window, cx| {
 9311        editor.handle_input("(", window, cx);
 9312    });
 9313    cx.assert_editor_state(
 9314        &"
 9315            fn main() {
 9316                sample(ˇ)
 9317            }
 9318        "
 9319        .unindent(),
 9320    );
 9321    handle_signature_help_request(&mut cx, mocked_response.clone()).await;
 9322    cx.condition(|editor, _| editor.signature_help_state.is_shown())
 9323        .await;
 9324    cx.update_editor(|editor, _, _| {
 9325        let signature_help_state = editor.signature_help_state.popover().cloned();
 9326        assert!(signature_help_state.is_some());
 9327        assert_eq!(
 9328            signature_help_state.unwrap().label,
 9329            "param1: u8, param2: u8"
 9330        );
 9331        editor.signature_help_state = SignatureHelpState::default();
 9332    });
 9333
 9334    // Ensure that signature_help is called when auto signature help override is enabled
 9335    cx.update(|_, cx| {
 9336        cx.update_global::<SettingsStore, _>(|settings, cx| {
 9337            settings.update_user_settings::<EditorSettings>(cx, |settings| {
 9338                settings.auto_signature_help = Some(true);
 9339                settings.show_signature_help_after_edits = Some(false);
 9340            });
 9341        });
 9342    });
 9343    cx.set_state(
 9344        &r#"
 9345            fn main() {
 9346                sampleˇ
 9347            }
 9348        "#
 9349        .unindent(),
 9350    );
 9351    cx.update_editor(|editor, window, cx| {
 9352        editor.handle_input("(", window, cx);
 9353    });
 9354    cx.assert_editor_state(
 9355        &"
 9356            fn main() {
 9357                sample(ˇ)
 9358            }
 9359        "
 9360        .unindent(),
 9361    );
 9362    handle_signature_help_request(&mut cx, mocked_response).await;
 9363    cx.condition(|editor, _| editor.signature_help_state.is_shown())
 9364        .await;
 9365    cx.editor(|editor, _, _| {
 9366        let signature_help_state = editor.signature_help_state.popover().cloned();
 9367        assert!(signature_help_state.is_some());
 9368        assert_eq!(
 9369            signature_help_state.unwrap().label,
 9370            "param1: u8, param2: u8"
 9371        );
 9372    });
 9373}
 9374
 9375#[gpui::test]
 9376async fn test_signature_help(cx: &mut TestAppContext) {
 9377    init_test(cx, |_| {});
 9378    cx.update(|cx| {
 9379        cx.update_global::<SettingsStore, _>(|settings, cx| {
 9380            settings.update_user_settings::<EditorSettings>(cx, |settings| {
 9381                settings.auto_signature_help = Some(true);
 9382            });
 9383        });
 9384    });
 9385
 9386    let mut cx = EditorLspTestContext::new_rust(
 9387        lsp::ServerCapabilities {
 9388            signature_help_provider: Some(lsp::SignatureHelpOptions {
 9389                ..Default::default()
 9390            }),
 9391            ..Default::default()
 9392        },
 9393        cx,
 9394    )
 9395    .await;
 9396
 9397    // A test that directly calls `show_signature_help`
 9398    cx.update_editor(|editor, window, cx| {
 9399        editor.show_signature_help(&ShowSignatureHelp, window, cx);
 9400    });
 9401
 9402    let mocked_response = lsp::SignatureHelp {
 9403        signatures: vec![lsp::SignatureInformation {
 9404            label: "fn sample(param1: u8, param2: u8)".to_string(),
 9405            documentation: None,
 9406            parameters: Some(vec![
 9407                lsp::ParameterInformation {
 9408                    label: lsp::ParameterLabel::Simple("param1: u8".to_string()),
 9409                    documentation: None,
 9410                },
 9411                lsp::ParameterInformation {
 9412                    label: lsp::ParameterLabel::Simple("param2: u8".to_string()),
 9413                    documentation: None,
 9414                },
 9415            ]),
 9416            active_parameter: None,
 9417        }],
 9418        active_signature: Some(0),
 9419        active_parameter: Some(0),
 9420    };
 9421    handle_signature_help_request(&mut cx, mocked_response).await;
 9422
 9423    cx.condition(|editor, _| editor.signature_help_state.is_shown())
 9424        .await;
 9425
 9426    cx.editor(|editor, _, _| {
 9427        let signature_help_state = editor.signature_help_state.popover().cloned();
 9428        assert!(signature_help_state.is_some());
 9429        assert_eq!(
 9430            signature_help_state.unwrap().label,
 9431            "param1: u8, param2: u8"
 9432        );
 9433    });
 9434
 9435    // When exiting outside from inside the brackets, `signature_help` is closed.
 9436    cx.set_state(indoc! {"
 9437        fn main() {
 9438            sample(ˇ);
 9439        }
 9440
 9441        fn sample(param1: u8, param2: u8) {}
 9442    "});
 9443
 9444    cx.update_editor(|editor, window, cx| {
 9445        editor.change_selections(None, window, cx, |s| s.select_ranges([0..0]));
 9446    });
 9447
 9448    let mocked_response = lsp::SignatureHelp {
 9449        signatures: Vec::new(),
 9450        active_signature: None,
 9451        active_parameter: None,
 9452    };
 9453    handle_signature_help_request(&mut cx, mocked_response).await;
 9454
 9455    cx.condition(|editor, _| !editor.signature_help_state.is_shown())
 9456        .await;
 9457
 9458    cx.editor(|editor, _, _| {
 9459        assert!(!editor.signature_help_state.is_shown());
 9460    });
 9461
 9462    // When entering inside the brackets from outside, `show_signature_help` is automatically called.
 9463    cx.set_state(indoc! {"
 9464        fn main() {
 9465            sample(ˇ);
 9466        }
 9467
 9468        fn sample(param1: u8, param2: u8) {}
 9469    "});
 9470
 9471    let mocked_response = lsp::SignatureHelp {
 9472        signatures: vec![lsp::SignatureInformation {
 9473            label: "fn sample(param1: u8, param2: u8)".to_string(),
 9474            documentation: None,
 9475            parameters: Some(vec![
 9476                lsp::ParameterInformation {
 9477                    label: lsp::ParameterLabel::Simple("param1: u8".to_string()),
 9478                    documentation: None,
 9479                },
 9480                lsp::ParameterInformation {
 9481                    label: lsp::ParameterLabel::Simple("param2: u8".to_string()),
 9482                    documentation: None,
 9483                },
 9484            ]),
 9485            active_parameter: None,
 9486        }],
 9487        active_signature: Some(0),
 9488        active_parameter: Some(0),
 9489    };
 9490    handle_signature_help_request(&mut cx, mocked_response.clone()).await;
 9491    cx.condition(|editor, _| editor.signature_help_state.is_shown())
 9492        .await;
 9493    cx.editor(|editor, _, _| {
 9494        assert!(editor.signature_help_state.is_shown());
 9495    });
 9496
 9497    // Restore the popover with more parameter input
 9498    cx.set_state(indoc! {"
 9499        fn main() {
 9500            sample(param1, param2ˇ);
 9501        }
 9502
 9503        fn sample(param1: u8, param2: u8) {}
 9504    "});
 9505
 9506    let mocked_response = lsp::SignatureHelp {
 9507        signatures: vec![lsp::SignatureInformation {
 9508            label: "fn sample(param1: u8, param2: u8)".to_string(),
 9509            documentation: None,
 9510            parameters: Some(vec![
 9511                lsp::ParameterInformation {
 9512                    label: lsp::ParameterLabel::Simple("param1: u8".to_string()),
 9513                    documentation: None,
 9514                },
 9515                lsp::ParameterInformation {
 9516                    label: lsp::ParameterLabel::Simple("param2: u8".to_string()),
 9517                    documentation: None,
 9518                },
 9519            ]),
 9520            active_parameter: None,
 9521        }],
 9522        active_signature: Some(0),
 9523        active_parameter: Some(1),
 9524    };
 9525    handle_signature_help_request(&mut cx, mocked_response.clone()).await;
 9526    cx.condition(|editor, _| editor.signature_help_state.is_shown())
 9527        .await;
 9528
 9529    // When selecting a range, the popover is gone.
 9530    // Avoid using `cx.set_state` to not actually edit the document, just change its selections.
 9531    cx.update_editor(|editor, window, cx| {
 9532        editor.change_selections(None, window, cx, |s| {
 9533            s.select_ranges(Some(Point::new(1, 25)..Point::new(1, 19)));
 9534        })
 9535    });
 9536    cx.assert_editor_state(indoc! {"
 9537        fn main() {
 9538            sample(param1, «ˇparam2»);
 9539        }
 9540
 9541        fn sample(param1: u8, param2: u8) {}
 9542    "});
 9543    cx.editor(|editor, _, _| {
 9544        assert!(!editor.signature_help_state.is_shown());
 9545    });
 9546
 9547    // When unselecting again, the popover is back if within the brackets.
 9548    cx.update_editor(|editor, window, cx| {
 9549        editor.change_selections(None, window, cx, |s| {
 9550            s.select_ranges(Some(Point::new(1, 19)..Point::new(1, 19)));
 9551        })
 9552    });
 9553    cx.assert_editor_state(indoc! {"
 9554        fn main() {
 9555            sample(param1, ˇparam2);
 9556        }
 9557
 9558        fn sample(param1: u8, param2: u8) {}
 9559    "});
 9560    handle_signature_help_request(&mut cx, mocked_response).await;
 9561    cx.condition(|editor, _| editor.signature_help_state.is_shown())
 9562        .await;
 9563    cx.editor(|editor, _, _| {
 9564        assert!(editor.signature_help_state.is_shown());
 9565    });
 9566
 9567    // Test to confirm that SignatureHelp does not appear after deselecting multiple ranges when it was hidden by pressing Escape.
 9568    cx.update_editor(|editor, window, cx| {
 9569        editor.change_selections(None, window, cx, |s| {
 9570            s.select_ranges(Some(Point::new(0, 0)..Point::new(0, 0)));
 9571            s.select_ranges(Some(Point::new(1, 19)..Point::new(1, 19)));
 9572        })
 9573    });
 9574    cx.assert_editor_state(indoc! {"
 9575        fn main() {
 9576            sample(param1, ˇparam2);
 9577        }
 9578
 9579        fn sample(param1: u8, param2: u8) {}
 9580    "});
 9581
 9582    let mocked_response = lsp::SignatureHelp {
 9583        signatures: vec![lsp::SignatureInformation {
 9584            label: "fn sample(param1: u8, param2: u8)".to_string(),
 9585            documentation: None,
 9586            parameters: Some(vec![
 9587                lsp::ParameterInformation {
 9588                    label: lsp::ParameterLabel::Simple("param1: u8".to_string()),
 9589                    documentation: None,
 9590                },
 9591                lsp::ParameterInformation {
 9592                    label: lsp::ParameterLabel::Simple("param2: u8".to_string()),
 9593                    documentation: None,
 9594                },
 9595            ]),
 9596            active_parameter: None,
 9597        }],
 9598        active_signature: Some(0),
 9599        active_parameter: Some(1),
 9600    };
 9601    handle_signature_help_request(&mut cx, mocked_response.clone()).await;
 9602    cx.condition(|editor, _| editor.signature_help_state.is_shown())
 9603        .await;
 9604    cx.update_editor(|editor, _, cx| {
 9605        editor.hide_signature_help(cx, SignatureHelpHiddenBy::Escape);
 9606    });
 9607    cx.condition(|editor, _| !editor.signature_help_state.is_shown())
 9608        .await;
 9609    cx.update_editor(|editor, window, cx| {
 9610        editor.change_selections(None, window, cx, |s| {
 9611            s.select_ranges(Some(Point::new(1, 25)..Point::new(1, 19)));
 9612        })
 9613    });
 9614    cx.assert_editor_state(indoc! {"
 9615        fn main() {
 9616            sample(param1, «ˇparam2»);
 9617        }
 9618
 9619        fn sample(param1: u8, param2: u8) {}
 9620    "});
 9621    cx.update_editor(|editor, window, cx| {
 9622        editor.change_selections(None, window, cx, |s| {
 9623            s.select_ranges(Some(Point::new(1, 19)..Point::new(1, 19)));
 9624        })
 9625    });
 9626    cx.assert_editor_state(indoc! {"
 9627        fn main() {
 9628            sample(param1, ˇparam2);
 9629        }
 9630
 9631        fn sample(param1: u8, param2: u8) {}
 9632    "});
 9633    cx.condition(|editor, _| !editor.signature_help_state.is_shown()) // because hidden by escape
 9634        .await;
 9635}
 9636
 9637#[gpui::test]
 9638async fn test_completion_mode(cx: &mut TestAppContext) {
 9639    init_test(cx, |_| {});
 9640    let mut cx = EditorLspTestContext::new_rust(
 9641        lsp::ServerCapabilities {
 9642            completion_provider: Some(lsp::CompletionOptions {
 9643                resolve_provider: Some(true),
 9644                ..Default::default()
 9645            }),
 9646            ..Default::default()
 9647        },
 9648        cx,
 9649    )
 9650    .await;
 9651
 9652    struct Run {
 9653        run_description: &'static str,
 9654        initial_state: String,
 9655        buffer_marked_text: String,
 9656        completion_text: &'static str,
 9657        expected_with_insert_mode: String,
 9658        expected_with_replace_mode: String,
 9659        expected_with_replace_subsequence_mode: String,
 9660        expected_with_replace_suffix_mode: String,
 9661    }
 9662
 9663    let runs = [
 9664        Run {
 9665            run_description: "Start of word matches completion text",
 9666            initial_state: "before ediˇ after".into(),
 9667            buffer_marked_text: "before <edi|> after".into(),
 9668            completion_text: "editor",
 9669            expected_with_insert_mode: "before editorˇ after".into(),
 9670            expected_with_replace_mode: "before editorˇ after".into(),
 9671            expected_with_replace_subsequence_mode: "before editorˇ after".into(),
 9672            expected_with_replace_suffix_mode: "before editorˇ after".into(),
 9673        },
 9674        Run {
 9675            run_description: "Accept same text at the middle of the word",
 9676            initial_state: "before ediˇtor after".into(),
 9677            buffer_marked_text: "before <edi|tor> after".into(),
 9678            completion_text: "editor",
 9679            expected_with_insert_mode: "before editorˇtor after".into(),
 9680            expected_with_replace_mode: "before editorˇ after".into(),
 9681            expected_with_replace_subsequence_mode: "before editorˇ after".into(),
 9682            expected_with_replace_suffix_mode: "before editorˇ after".into(),
 9683        },
 9684        Run {
 9685            run_description: "End of word matches completion text -- cursor at end",
 9686            initial_state: "before torˇ after".into(),
 9687            buffer_marked_text: "before <tor|> after".into(),
 9688            completion_text: "editor",
 9689            expected_with_insert_mode: "before editorˇ after".into(),
 9690            expected_with_replace_mode: "before editorˇ after".into(),
 9691            expected_with_replace_subsequence_mode: "before editorˇ after".into(),
 9692            expected_with_replace_suffix_mode: "before editorˇ after".into(),
 9693        },
 9694        Run {
 9695            run_description: "End of word matches completion text -- cursor at start",
 9696            initial_state: "before ˇtor after".into(),
 9697            buffer_marked_text: "before <|tor> after".into(),
 9698            completion_text: "editor",
 9699            expected_with_insert_mode: "before editorˇtor after".into(),
 9700            expected_with_replace_mode: "before editorˇ after".into(),
 9701            expected_with_replace_subsequence_mode: "before editorˇ after".into(),
 9702            expected_with_replace_suffix_mode: "before editorˇ after".into(),
 9703        },
 9704        Run {
 9705            run_description: "Prepend text containing whitespace",
 9706            initial_state: "pˇfield: bool".into(),
 9707            buffer_marked_text: "<p|field>: bool".into(),
 9708            completion_text: "pub ",
 9709            expected_with_insert_mode: "pub ˇfield: bool".into(),
 9710            expected_with_replace_mode: "pub ˇ: bool".into(),
 9711            expected_with_replace_subsequence_mode: "pub ˇfield: bool".into(),
 9712            expected_with_replace_suffix_mode: "pub ˇfield: bool".into(),
 9713        },
 9714        Run {
 9715            run_description: "Add element to start of list",
 9716            initial_state: "[element_ˇelement_2]".into(),
 9717            buffer_marked_text: "[<element_|element_2>]".into(),
 9718            completion_text: "element_1",
 9719            expected_with_insert_mode: "[element_1ˇelement_2]".into(),
 9720            expected_with_replace_mode: "[element_1ˇ]".into(),
 9721            expected_with_replace_subsequence_mode: "[element_1ˇelement_2]".into(),
 9722            expected_with_replace_suffix_mode: "[element_1ˇelement_2]".into(),
 9723        },
 9724        Run {
 9725            run_description: "Add element to start of list -- first and second elements are equal",
 9726            initial_state: "[elˇelement]".into(),
 9727            buffer_marked_text: "[<el|element>]".into(),
 9728            completion_text: "element",
 9729            expected_with_insert_mode: "[elementˇelement]".into(),
 9730            expected_with_replace_mode: "[elementˇ]".into(),
 9731            expected_with_replace_subsequence_mode: "[elementˇelement]".into(),
 9732            expected_with_replace_suffix_mode: "[elementˇ]".into(),
 9733        },
 9734        Run {
 9735            run_description: "Ends with matching suffix",
 9736            initial_state: "SubˇError".into(),
 9737            buffer_marked_text: "<Sub|Error>".into(),
 9738            completion_text: "SubscriptionError",
 9739            expected_with_insert_mode: "SubscriptionErrorˇError".into(),
 9740            expected_with_replace_mode: "SubscriptionErrorˇ".into(),
 9741            expected_with_replace_subsequence_mode: "SubscriptionErrorˇ".into(),
 9742            expected_with_replace_suffix_mode: "SubscriptionErrorˇ".into(),
 9743        },
 9744        Run {
 9745            run_description: "Suffix is a subsequence -- contiguous",
 9746            initial_state: "SubˇErr".into(),
 9747            buffer_marked_text: "<Sub|Err>".into(),
 9748            completion_text: "SubscriptionError",
 9749            expected_with_insert_mode: "SubscriptionErrorˇErr".into(),
 9750            expected_with_replace_mode: "SubscriptionErrorˇ".into(),
 9751            expected_with_replace_subsequence_mode: "SubscriptionErrorˇ".into(),
 9752            expected_with_replace_suffix_mode: "SubscriptionErrorˇErr".into(),
 9753        },
 9754        Run {
 9755            run_description: "Suffix is a subsequence -- non-contiguous -- replace intended",
 9756            initial_state: "Suˇscrirr".into(),
 9757            buffer_marked_text: "<Su|scrirr>".into(),
 9758            completion_text: "SubscriptionError",
 9759            expected_with_insert_mode: "SubscriptionErrorˇscrirr".into(),
 9760            expected_with_replace_mode: "SubscriptionErrorˇ".into(),
 9761            expected_with_replace_subsequence_mode: "SubscriptionErrorˇ".into(),
 9762            expected_with_replace_suffix_mode: "SubscriptionErrorˇscrirr".into(),
 9763        },
 9764        Run {
 9765            run_description: "Suffix is a subsequence -- non-contiguous -- replace unintended",
 9766            initial_state: "foo(indˇix)".into(),
 9767            buffer_marked_text: "foo(<ind|ix>)".into(),
 9768            completion_text: "node_index",
 9769            expected_with_insert_mode: "foo(node_indexˇix)".into(),
 9770            expected_with_replace_mode: "foo(node_indexˇ)".into(),
 9771            expected_with_replace_subsequence_mode: "foo(node_indexˇix)".into(),
 9772            expected_with_replace_suffix_mode: "foo(node_indexˇix)".into(),
 9773        },
 9774    ];
 9775
 9776    for run in runs {
 9777        let run_variations = [
 9778            (LspInsertMode::Insert, run.expected_with_insert_mode),
 9779            (LspInsertMode::Replace, run.expected_with_replace_mode),
 9780            (
 9781                LspInsertMode::ReplaceSubsequence,
 9782                run.expected_with_replace_subsequence_mode,
 9783            ),
 9784            (
 9785                LspInsertMode::ReplaceSuffix,
 9786                run.expected_with_replace_suffix_mode,
 9787            ),
 9788        ];
 9789
 9790        for (lsp_insert_mode, expected_text) in run_variations {
 9791            eprintln!(
 9792                "run = {:?}, mode = {lsp_insert_mode:.?}",
 9793                run.run_description,
 9794            );
 9795
 9796            update_test_language_settings(&mut cx, |settings| {
 9797                settings.defaults.completions = Some(CompletionSettings {
 9798                    lsp_insert_mode,
 9799                    words: WordsCompletionMode::Disabled,
 9800                    lsp: true,
 9801                    lsp_fetch_timeout_ms: 0,
 9802                });
 9803            });
 9804
 9805            cx.set_state(&run.initial_state);
 9806            cx.update_editor(|editor, window, cx| {
 9807                editor.show_completions(&ShowCompletions { trigger: None }, window, cx);
 9808            });
 9809
 9810            let counter = Arc::new(AtomicUsize::new(0));
 9811            handle_completion_request_with_insert_and_replace(
 9812                &mut cx,
 9813                &run.buffer_marked_text,
 9814                vec![run.completion_text],
 9815                counter.clone(),
 9816            )
 9817            .await;
 9818            cx.condition(|editor, _| editor.context_menu_visible())
 9819                .await;
 9820            assert_eq!(counter.load(atomic::Ordering::Acquire), 1);
 9821
 9822            let apply_additional_edits = cx.update_editor(|editor, window, cx| {
 9823                editor
 9824                    .confirm_completion(&ConfirmCompletion::default(), window, cx)
 9825                    .unwrap()
 9826            });
 9827            cx.assert_editor_state(&expected_text);
 9828            handle_resolve_completion_request(&mut cx, None).await;
 9829            apply_additional_edits.await.unwrap();
 9830        }
 9831    }
 9832}
 9833
 9834#[gpui::test]
 9835async fn test_completion_with_mode_specified_by_action(cx: &mut TestAppContext) {
 9836    init_test(cx, |_| {});
 9837    let mut cx = EditorLspTestContext::new_rust(
 9838        lsp::ServerCapabilities {
 9839            completion_provider: Some(lsp::CompletionOptions {
 9840                resolve_provider: Some(true),
 9841                ..Default::default()
 9842            }),
 9843            ..Default::default()
 9844        },
 9845        cx,
 9846    )
 9847    .await;
 9848
 9849    let initial_state = "SubˇError";
 9850    let buffer_marked_text = "<Sub|Error>";
 9851    let completion_text = "SubscriptionError";
 9852    let expected_with_insert_mode = "SubscriptionErrorˇError";
 9853    let expected_with_replace_mode = "SubscriptionErrorˇ";
 9854
 9855    update_test_language_settings(&mut cx, |settings| {
 9856        settings.defaults.completions = Some(CompletionSettings {
 9857            words: WordsCompletionMode::Disabled,
 9858            // set the opposite here to ensure that the action is overriding the default behavior
 9859            lsp_insert_mode: LspInsertMode::Insert,
 9860            lsp: true,
 9861            lsp_fetch_timeout_ms: 0,
 9862        });
 9863    });
 9864
 9865    cx.set_state(initial_state);
 9866    cx.update_editor(|editor, window, cx| {
 9867        editor.show_completions(&ShowCompletions { trigger: None }, window, cx);
 9868    });
 9869
 9870    let counter = Arc::new(AtomicUsize::new(0));
 9871    handle_completion_request_with_insert_and_replace(
 9872        &mut cx,
 9873        &buffer_marked_text,
 9874        vec![completion_text],
 9875        counter.clone(),
 9876    )
 9877    .await;
 9878    cx.condition(|editor, _| editor.context_menu_visible())
 9879        .await;
 9880    assert_eq!(counter.load(atomic::Ordering::Acquire), 1);
 9881
 9882    let apply_additional_edits = cx.update_editor(|editor, window, cx| {
 9883        editor
 9884            .confirm_completion_replace(&ConfirmCompletionReplace, window, cx)
 9885            .unwrap()
 9886    });
 9887    cx.assert_editor_state(&expected_with_replace_mode);
 9888    handle_resolve_completion_request(&mut cx, None).await;
 9889    apply_additional_edits.await.unwrap();
 9890
 9891    update_test_language_settings(&mut cx, |settings| {
 9892        settings.defaults.completions = Some(CompletionSettings {
 9893            words: WordsCompletionMode::Disabled,
 9894            // set the opposite here to ensure that the action is overriding the default behavior
 9895            lsp_insert_mode: LspInsertMode::Replace,
 9896            lsp: true,
 9897            lsp_fetch_timeout_ms: 0,
 9898        });
 9899    });
 9900
 9901    cx.set_state(initial_state);
 9902    cx.update_editor(|editor, window, cx| {
 9903        editor.show_completions(&ShowCompletions { trigger: None }, window, cx);
 9904    });
 9905    handle_completion_request_with_insert_and_replace(
 9906        &mut cx,
 9907        &buffer_marked_text,
 9908        vec![completion_text],
 9909        counter.clone(),
 9910    )
 9911    .await;
 9912    cx.condition(|editor, _| editor.context_menu_visible())
 9913        .await;
 9914    assert_eq!(counter.load(atomic::Ordering::Acquire), 2);
 9915
 9916    let apply_additional_edits = cx.update_editor(|editor, window, cx| {
 9917        editor
 9918            .confirm_completion_insert(&ConfirmCompletionInsert, window, cx)
 9919            .unwrap()
 9920    });
 9921    cx.assert_editor_state(&expected_with_insert_mode);
 9922    handle_resolve_completion_request(&mut cx, None).await;
 9923    apply_additional_edits.await.unwrap();
 9924}
 9925
 9926#[gpui::test]
 9927async fn test_completion_replacing_suffix_in_multicursors(cx: &mut TestAppContext) {
 9928    init_test(cx, |_| {});
 9929    let mut cx = EditorLspTestContext::new_rust(
 9930        lsp::ServerCapabilities {
 9931            completion_provider: Some(lsp::CompletionOptions {
 9932                resolve_provider: Some(true),
 9933                ..Default::default()
 9934            }),
 9935            ..Default::default()
 9936        },
 9937        cx,
 9938    )
 9939    .await;
 9940
 9941    let initial_state = indoc! {"
 9942        1. buf.to_offˇsuffix
 9943        2. buf.to_offˇsuf
 9944        3. buf.to_offˇfix
 9945        4. buf.to_offˇ
 9946        5. into_offˇensive
 9947        6. ˇsuffix
 9948        7. let ˇ //
 9949        8. aaˇzz
 9950        9. buf.to_off«zzzzzˇ»suffix
 9951        10. buf.«ˇzzzzz»suffix
 9952        11. to_off«ˇzzzzz»
 9953
 9954        buf.to_offˇsuffix  // newest cursor
 9955    "};
 9956    let completion_marked_buffer = indoc! {"
 9957        1. buf.to_offsuffix
 9958        2. buf.to_offsuf
 9959        3. buf.to_offfix
 9960        4. buf.to_off
 9961        5. into_offensive
 9962        6. suffix
 9963        7. let  //
 9964        8. aazz
 9965        9. buf.to_offzzzzzsuffix
 9966        10. buf.zzzzzsuffix
 9967        11. to_offzzzzz
 9968
 9969        buf.<to_off|suffix>  // newest cursor
 9970    "};
 9971    let completion_text = "to_offset";
 9972    let expected = indoc! {"
 9973        1. buf.to_offsetˇ
 9974        2. buf.to_offsetˇsuf
 9975        3. buf.to_offsetˇfix
 9976        4. buf.to_offsetˇ
 9977        5. into_offsetˇensive
 9978        6. to_offsetˇsuffix
 9979        7. let to_offsetˇ //
 9980        8. aato_offsetˇzz
 9981        9. buf.to_offsetˇ
 9982        10. buf.to_offsetˇsuffix
 9983        11. to_offsetˇ
 9984
 9985        buf.to_offsetˇ  // newest cursor
 9986    "};
 9987
 9988    cx.set_state(initial_state);
 9989    cx.update_editor(|editor, window, cx| {
 9990        editor.show_completions(&ShowCompletions { trigger: None }, window, cx);
 9991    });
 9992
 9993    let counter = Arc::new(AtomicUsize::new(0));
 9994    handle_completion_request_with_insert_and_replace(
 9995        &mut cx,
 9996        completion_marked_buffer,
 9997        vec![completion_text],
 9998        counter.clone(),
 9999    )
10000    .await;
10001    cx.condition(|editor, _| editor.context_menu_visible())
10002        .await;
10003    assert_eq!(counter.load(atomic::Ordering::Acquire), 1);
10004
10005    let apply_additional_edits = cx.update_editor(|editor, window, cx| {
10006        editor
10007            .confirm_completion_replace(&ConfirmCompletionReplace, window, cx)
10008            .unwrap()
10009    });
10010    cx.assert_editor_state(expected);
10011    handle_resolve_completion_request(&mut cx, None).await;
10012    apply_additional_edits.await.unwrap();
10013}
10014
10015// This used to crash
10016#[gpui::test]
10017async fn test_completion_in_multibuffer_with_replace_range(cx: &mut TestAppContext) {
10018    init_test(cx, |_| {});
10019
10020    let buffer_text = indoc! {"
10021        fn main() {
10022            10.satu;
10023
10024            //
10025            // separate cursors so they open in different excerpts (manually reproducible)
10026            //
10027
10028            10.satu20;
10029        }
10030    "};
10031    let multibuffer_text_with_selections = indoc! {"
10032        fn main() {
10033            10.satuˇ;
10034
10035            //
10036
10037            //
10038
10039            10.satuˇ20;
10040        }
10041    "};
10042    let expected_multibuffer = indoc! {"
10043        fn main() {
10044            10.saturating_sub()ˇ;
10045
10046            //
10047
10048            //
10049
10050            10.saturating_sub()ˇ;
10051        }
10052    "};
10053
10054    let first_excerpt_end = buffer_text.find("//").unwrap() + 3;
10055    let second_excerpt_end = buffer_text.rfind("//").unwrap() - 4;
10056
10057    let fs = FakeFs::new(cx.executor());
10058    fs.insert_tree(
10059        path!("/a"),
10060        json!({
10061            "main.rs": buffer_text,
10062        }),
10063    )
10064    .await;
10065
10066    let project = Project::test(fs, [path!("/a").as_ref()], cx).await;
10067    let language_registry = project.read_with(cx, |project, _| project.languages().clone());
10068    language_registry.add(rust_lang());
10069    let mut fake_servers = language_registry.register_fake_lsp(
10070        "Rust",
10071        FakeLspAdapter {
10072            capabilities: lsp::ServerCapabilities {
10073                completion_provider: Some(lsp::CompletionOptions {
10074                    resolve_provider: None,
10075                    ..lsp::CompletionOptions::default()
10076                }),
10077                ..lsp::ServerCapabilities::default()
10078            },
10079            ..FakeLspAdapter::default()
10080        },
10081    );
10082    let workspace = cx.add_window(|window, cx| Workspace::test_new(project.clone(), window, cx));
10083    let cx = &mut VisualTestContext::from_window(*workspace, cx);
10084    let buffer = project
10085        .update(cx, |project, cx| {
10086            project.open_local_buffer(path!("/a/main.rs"), cx)
10087        })
10088        .await
10089        .unwrap();
10090
10091    let multi_buffer = cx.new(|cx| {
10092        let mut multi_buffer = MultiBuffer::new(Capability::ReadWrite);
10093        multi_buffer.push_excerpts(
10094            buffer.clone(),
10095            [ExcerptRange::new(0..first_excerpt_end)],
10096            cx,
10097        );
10098        multi_buffer.push_excerpts(
10099            buffer.clone(),
10100            [ExcerptRange::new(second_excerpt_end..buffer_text.len())],
10101            cx,
10102        );
10103        multi_buffer
10104    });
10105
10106    let editor = workspace
10107        .update(cx, |_, window, cx| {
10108            cx.new(|cx| {
10109                Editor::new(
10110                    EditorMode::Full {
10111                        scale_ui_elements_with_buffer_font_size: false,
10112                        show_active_line_background: false,
10113                    },
10114                    multi_buffer.clone(),
10115                    Some(project.clone()),
10116                    window,
10117                    cx,
10118                )
10119            })
10120        })
10121        .unwrap();
10122
10123    let pane = workspace
10124        .update(cx, |workspace, _, _| workspace.active_pane().clone())
10125        .unwrap();
10126    pane.update_in(cx, |pane, window, cx| {
10127        pane.add_item(Box::new(editor.clone()), true, true, None, window, cx);
10128    });
10129
10130    let fake_server = fake_servers.next().await.unwrap();
10131
10132    editor.update_in(cx, |editor, window, cx| {
10133        editor.change_selections(None, window, cx, |s| {
10134            s.select_ranges([
10135                Point::new(1, 11)..Point::new(1, 11),
10136                Point::new(7, 11)..Point::new(7, 11),
10137            ])
10138        });
10139
10140        assert_text_with_selections(editor, multibuffer_text_with_selections, cx);
10141    });
10142
10143    editor.update_in(cx, |editor, window, cx| {
10144        editor.show_completions(&ShowCompletions { trigger: None }, window, cx);
10145    });
10146
10147    fake_server
10148        .set_request_handler::<lsp::request::Completion, _, _>(move |_, _| async move {
10149            let completion_item = lsp::CompletionItem {
10150                label: "saturating_sub()".into(),
10151                text_edit: Some(lsp::CompletionTextEdit::InsertAndReplace(
10152                    lsp::InsertReplaceEdit {
10153                        new_text: "saturating_sub()".to_owned(),
10154                        insert: lsp::Range::new(
10155                            lsp::Position::new(7, 7),
10156                            lsp::Position::new(7, 11),
10157                        ),
10158                        replace: lsp::Range::new(
10159                            lsp::Position::new(7, 7),
10160                            lsp::Position::new(7, 13),
10161                        ),
10162                    },
10163                )),
10164                ..lsp::CompletionItem::default()
10165            };
10166
10167            Ok(Some(lsp::CompletionResponse::Array(vec![completion_item])))
10168        })
10169        .next()
10170        .await
10171        .unwrap();
10172
10173    cx.condition(&editor, |editor, _| editor.context_menu_visible())
10174        .await;
10175
10176    editor
10177        .update_in(cx, |editor, window, cx| {
10178            editor
10179                .confirm_completion_replace(&ConfirmCompletionReplace, window, cx)
10180                .unwrap()
10181        })
10182        .await
10183        .unwrap();
10184
10185    editor.update(cx, |editor, cx| {
10186        assert_text_with_selections(editor, expected_multibuffer, cx);
10187    })
10188}
10189
10190#[gpui::test]
10191async fn test_completion(cx: &mut TestAppContext) {
10192    init_test(cx, |_| {});
10193
10194    let mut cx = EditorLspTestContext::new_rust(
10195        lsp::ServerCapabilities {
10196            completion_provider: Some(lsp::CompletionOptions {
10197                trigger_characters: Some(vec![".".to_string(), ":".to_string()]),
10198                resolve_provider: Some(true),
10199                ..Default::default()
10200            }),
10201            signature_help_provider: Some(lsp::SignatureHelpOptions::default()),
10202            ..Default::default()
10203        },
10204        cx,
10205    )
10206    .await;
10207    let counter = Arc::new(AtomicUsize::new(0));
10208
10209    cx.set_state(indoc! {"
10210        oneˇ
10211        two
10212        three
10213    "});
10214    cx.simulate_keystroke(".");
10215    handle_completion_request(
10216        &mut cx,
10217        indoc! {"
10218            one.|<>
10219            two
10220            three
10221        "},
10222        vec!["first_completion", "second_completion"],
10223        counter.clone(),
10224    )
10225    .await;
10226    cx.condition(|editor, _| editor.context_menu_visible())
10227        .await;
10228    assert_eq!(counter.load(atomic::Ordering::Acquire), 1);
10229
10230    let _handler = handle_signature_help_request(
10231        &mut cx,
10232        lsp::SignatureHelp {
10233            signatures: vec![lsp::SignatureInformation {
10234                label: "test signature".to_string(),
10235                documentation: None,
10236                parameters: Some(vec![lsp::ParameterInformation {
10237                    label: lsp::ParameterLabel::Simple("foo: u8".to_string()),
10238                    documentation: None,
10239                }]),
10240                active_parameter: None,
10241            }],
10242            active_signature: None,
10243            active_parameter: None,
10244        },
10245    );
10246    cx.update_editor(|editor, window, cx| {
10247        assert!(
10248            !editor.signature_help_state.is_shown(),
10249            "No signature help was called for"
10250        );
10251        editor.show_signature_help(&ShowSignatureHelp, window, cx);
10252    });
10253    cx.run_until_parked();
10254    cx.update_editor(|editor, _, _| {
10255        assert!(
10256            !editor.signature_help_state.is_shown(),
10257            "No signature help should be shown when completions menu is open"
10258        );
10259    });
10260
10261    let apply_additional_edits = cx.update_editor(|editor, window, cx| {
10262        editor.context_menu_next(&Default::default(), window, cx);
10263        editor
10264            .confirm_completion(&ConfirmCompletion::default(), window, cx)
10265            .unwrap()
10266    });
10267    cx.assert_editor_state(indoc! {"
10268        one.second_completionˇ
10269        two
10270        three
10271    "});
10272
10273    handle_resolve_completion_request(
10274        &mut cx,
10275        Some(vec![
10276            (
10277                //This overlaps with the primary completion edit which is
10278                //misbehavior from the LSP spec, test that we filter it out
10279                indoc! {"
10280                    one.second_ˇcompletion
10281                    two
10282                    threeˇ
10283                "},
10284                "overlapping additional edit",
10285            ),
10286            (
10287                indoc! {"
10288                    one.second_completion
10289                    two
10290                    threeˇ
10291                "},
10292                "\nadditional edit",
10293            ),
10294        ]),
10295    )
10296    .await;
10297    apply_additional_edits.await.unwrap();
10298    cx.assert_editor_state(indoc! {"
10299        one.second_completionˇ
10300        two
10301        three
10302        additional edit
10303    "});
10304
10305    cx.set_state(indoc! {"
10306        one.second_completion
10307        twoˇ
10308        threeˇ
10309        additional edit
10310    "});
10311    cx.simulate_keystroke(" ");
10312    assert!(cx.editor(|e, _, _| e.context_menu.borrow_mut().is_none()));
10313    cx.simulate_keystroke("s");
10314    assert!(cx.editor(|e, _, _| e.context_menu.borrow_mut().is_none()));
10315
10316    cx.assert_editor_state(indoc! {"
10317        one.second_completion
10318        two sˇ
10319        three sˇ
10320        additional edit
10321    "});
10322    handle_completion_request(
10323        &mut cx,
10324        indoc! {"
10325            one.second_completion
10326            two s
10327            three <s|>
10328            additional edit
10329        "},
10330        vec!["fourth_completion", "fifth_completion", "sixth_completion"],
10331        counter.clone(),
10332    )
10333    .await;
10334    cx.condition(|editor, _| editor.context_menu_visible())
10335        .await;
10336    assert_eq!(counter.load(atomic::Ordering::Acquire), 2);
10337
10338    cx.simulate_keystroke("i");
10339
10340    handle_completion_request(
10341        &mut cx,
10342        indoc! {"
10343            one.second_completion
10344            two si
10345            three <si|>
10346            additional edit
10347        "},
10348        vec!["fourth_completion", "fifth_completion", "sixth_completion"],
10349        counter.clone(),
10350    )
10351    .await;
10352    cx.condition(|editor, _| editor.context_menu_visible())
10353        .await;
10354    assert_eq!(counter.load(atomic::Ordering::Acquire), 3);
10355
10356    let apply_additional_edits = cx.update_editor(|editor, window, cx| {
10357        editor
10358            .confirm_completion(&ConfirmCompletion::default(), window, cx)
10359            .unwrap()
10360    });
10361    cx.assert_editor_state(indoc! {"
10362        one.second_completion
10363        two sixth_completionˇ
10364        three sixth_completionˇ
10365        additional edit
10366    "});
10367
10368    apply_additional_edits.await.unwrap();
10369
10370    update_test_language_settings(&mut cx, |settings| {
10371        settings.defaults.show_completions_on_input = Some(false);
10372    });
10373    cx.set_state("editorˇ");
10374    cx.simulate_keystroke(".");
10375    assert!(cx.editor(|e, _, _| e.context_menu.borrow_mut().is_none()));
10376    cx.simulate_keystrokes("c l o");
10377    cx.assert_editor_state("editor.cloˇ");
10378    assert!(cx.editor(|e, _, _| e.context_menu.borrow_mut().is_none()));
10379    cx.update_editor(|editor, window, cx| {
10380        editor.show_completions(&ShowCompletions { trigger: None }, window, cx);
10381    });
10382    handle_completion_request(
10383        &mut cx,
10384        "editor.<clo|>",
10385        vec!["close", "clobber"],
10386        counter.clone(),
10387    )
10388    .await;
10389    cx.condition(|editor, _| editor.context_menu_visible())
10390        .await;
10391    assert_eq!(counter.load(atomic::Ordering::Acquire), 4);
10392
10393    let apply_additional_edits = cx.update_editor(|editor, window, cx| {
10394        editor
10395            .confirm_completion(&ConfirmCompletion::default(), window, cx)
10396            .unwrap()
10397    });
10398    cx.assert_editor_state("editor.closeˇ");
10399    handle_resolve_completion_request(&mut cx, None).await;
10400    apply_additional_edits.await.unwrap();
10401}
10402
10403#[gpui::test]
10404async fn test_word_completion(cx: &mut TestAppContext) {
10405    let lsp_fetch_timeout_ms = 10;
10406    init_test(cx, |language_settings| {
10407        language_settings.defaults.completions = Some(CompletionSettings {
10408            words: WordsCompletionMode::Fallback,
10409            lsp: true,
10410            lsp_fetch_timeout_ms: 10,
10411            lsp_insert_mode: LspInsertMode::Insert,
10412        });
10413    });
10414
10415    let mut cx = EditorLspTestContext::new_rust(
10416        lsp::ServerCapabilities {
10417            completion_provider: Some(lsp::CompletionOptions {
10418                trigger_characters: Some(vec![".".to_string(), ":".to_string()]),
10419                ..lsp::CompletionOptions::default()
10420            }),
10421            signature_help_provider: Some(lsp::SignatureHelpOptions::default()),
10422            ..lsp::ServerCapabilities::default()
10423        },
10424        cx,
10425    )
10426    .await;
10427
10428    let throttle_completions = Arc::new(AtomicBool::new(false));
10429
10430    let lsp_throttle_completions = throttle_completions.clone();
10431    let _completion_requests_handler =
10432        cx.lsp
10433            .server
10434            .on_request::<lsp::request::Completion, _, _>(move |_, cx| {
10435                let lsp_throttle_completions = lsp_throttle_completions.clone();
10436                let cx = cx.clone();
10437                async move {
10438                    if lsp_throttle_completions.load(atomic::Ordering::Acquire) {
10439                        cx.background_executor()
10440                            .timer(Duration::from_millis(lsp_fetch_timeout_ms * 10))
10441                            .await;
10442                    }
10443                    Ok(Some(lsp::CompletionResponse::Array(vec![
10444                        lsp::CompletionItem {
10445                            label: "first".into(),
10446                            ..lsp::CompletionItem::default()
10447                        },
10448                        lsp::CompletionItem {
10449                            label: "last".into(),
10450                            ..lsp::CompletionItem::default()
10451                        },
10452                    ])))
10453                }
10454            });
10455
10456    cx.set_state(indoc! {"
10457        oneˇ
10458        two
10459        three
10460    "});
10461    cx.simulate_keystroke(".");
10462    cx.executor().run_until_parked();
10463    cx.condition(|editor, _| editor.context_menu_visible())
10464        .await;
10465    cx.update_editor(|editor, window, cx| {
10466        if let Some(CodeContextMenu::Completions(menu)) = editor.context_menu.borrow_mut().as_ref()
10467        {
10468            assert_eq!(
10469                completion_menu_entries(&menu),
10470                &["first", "last"],
10471                "When LSP server is fast to reply, no fallback word completions are used"
10472            );
10473        } else {
10474            panic!("expected completion menu to be open");
10475        }
10476        editor.cancel(&Cancel, window, cx);
10477    });
10478    cx.executor().run_until_parked();
10479    cx.condition(|editor, _| !editor.context_menu_visible())
10480        .await;
10481
10482    throttle_completions.store(true, atomic::Ordering::Release);
10483    cx.simulate_keystroke(".");
10484    cx.executor()
10485        .advance_clock(Duration::from_millis(lsp_fetch_timeout_ms * 2));
10486    cx.executor().run_until_parked();
10487    cx.condition(|editor, _| editor.context_menu_visible())
10488        .await;
10489    cx.update_editor(|editor, _, _| {
10490        if let Some(CodeContextMenu::Completions(menu)) = editor.context_menu.borrow_mut().as_ref()
10491        {
10492            assert_eq!(completion_menu_entries(&menu), &["one", "three", "two"],
10493                "When LSP server is slow, document words can be shown instead, if configured accordingly");
10494        } else {
10495            panic!("expected completion menu to be open");
10496        }
10497    });
10498}
10499
10500#[gpui::test]
10501async fn test_word_completions_do_not_duplicate_lsp_ones(cx: &mut TestAppContext) {
10502    init_test(cx, |language_settings| {
10503        language_settings.defaults.completions = Some(CompletionSettings {
10504            words: WordsCompletionMode::Enabled,
10505            lsp: true,
10506            lsp_fetch_timeout_ms: 0,
10507            lsp_insert_mode: LspInsertMode::Insert,
10508        });
10509    });
10510
10511    let mut cx = EditorLspTestContext::new_rust(
10512        lsp::ServerCapabilities {
10513            completion_provider: Some(lsp::CompletionOptions {
10514                trigger_characters: Some(vec![".".to_string(), ":".to_string()]),
10515                ..lsp::CompletionOptions::default()
10516            }),
10517            signature_help_provider: Some(lsp::SignatureHelpOptions::default()),
10518            ..lsp::ServerCapabilities::default()
10519        },
10520        cx,
10521    )
10522    .await;
10523
10524    let _completion_requests_handler =
10525        cx.lsp
10526            .server
10527            .on_request::<lsp::request::Completion, _, _>(move |_, _| async move {
10528                Ok(Some(lsp::CompletionResponse::Array(vec![
10529                    lsp::CompletionItem {
10530                        label: "first".into(),
10531                        ..lsp::CompletionItem::default()
10532                    },
10533                    lsp::CompletionItem {
10534                        label: "last".into(),
10535                        ..lsp::CompletionItem::default()
10536                    },
10537                ])))
10538            });
10539
10540    cx.set_state(indoc! {"ˇ
10541        first
10542        last
10543        second
10544    "});
10545    cx.simulate_keystroke(".");
10546    cx.executor().run_until_parked();
10547    cx.condition(|editor, _| editor.context_menu_visible())
10548        .await;
10549    cx.update_editor(|editor, _, _| {
10550        if let Some(CodeContextMenu::Completions(menu)) = editor.context_menu.borrow_mut().as_ref()
10551        {
10552            assert_eq!(
10553                completion_menu_entries(&menu),
10554                &["first", "last", "second"],
10555                "Word completions that has the same edit as the any of the LSP ones, should not be proposed"
10556            );
10557        } else {
10558            panic!("expected completion menu to be open");
10559        }
10560    });
10561}
10562
10563#[gpui::test]
10564async fn test_word_completions_continue_on_typing(cx: &mut TestAppContext) {
10565    init_test(cx, |language_settings| {
10566        language_settings.defaults.completions = Some(CompletionSettings {
10567            words: WordsCompletionMode::Disabled,
10568            lsp: true,
10569            lsp_fetch_timeout_ms: 0,
10570            lsp_insert_mode: LspInsertMode::Insert,
10571        });
10572    });
10573
10574    let mut cx = EditorLspTestContext::new_rust(
10575        lsp::ServerCapabilities {
10576            completion_provider: Some(lsp::CompletionOptions {
10577                trigger_characters: Some(vec![".".to_string(), ":".to_string()]),
10578                ..lsp::CompletionOptions::default()
10579            }),
10580            signature_help_provider: Some(lsp::SignatureHelpOptions::default()),
10581            ..lsp::ServerCapabilities::default()
10582        },
10583        cx,
10584    )
10585    .await;
10586
10587    let _completion_requests_handler =
10588        cx.lsp
10589            .server
10590            .on_request::<lsp::request::Completion, _, _>(move |_, _| async move {
10591                panic!("LSP completions should not be queried when dealing with word completions")
10592            });
10593
10594    cx.set_state(indoc! {"ˇ
10595        first
10596        last
10597        second
10598    "});
10599    cx.update_editor(|editor, window, cx| {
10600        editor.show_word_completions(&ShowWordCompletions, window, cx);
10601    });
10602    cx.executor().run_until_parked();
10603    cx.condition(|editor, _| editor.context_menu_visible())
10604        .await;
10605    cx.update_editor(|editor, _, _| {
10606        if let Some(CodeContextMenu::Completions(menu)) = editor.context_menu.borrow_mut().as_ref()
10607        {
10608            assert_eq!(
10609                completion_menu_entries(&menu),
10610                &["first", "last", "second"],
10611                "`ShowWordCompletions` action should show word completions"
10612            );
10613        } else {
10614            panic!("expected completion menu to be open");
10615        }
10616    });
10617
10618    cx.simulate_keystroke("l");
10619    cx.executor().run_until_parked();
10620    cx.condition(|editor, _| editor.context_menu_visible())
10621        .await;
10622    cx.update_editor(|editor, _, _| {
10623        if let Some(CodeContextMenu::Completions(menu)) = editor.context_menu.borrow_mut().as_ref()
10624        {
10625            assert_eq!(
10626                completion_menu_entries(&menu),
10627                &["last"],
10628                "After showing word completions, further editing should filter them and not query the LSP"
10629            );
10630        } else {
10631            panic!("expected completion menu to be open");
10632        }
10633    });
10634}
10635
10636#[gpui::test]
10637async fn test_word_completions_usually_skip_digits(cx: &mut TestAppContext) {
10638    init_test(cx, |language_settings| {
10639        language_settings.defaults.completions = Some(CompletionSettings {
10640            words: WordsCompletionMode::Fallback,
10641            lsp: false,
10642            lsp_fetch_timeout_ms: 0,
10643            lsp_insert_mode: LspInsertMode::Insert,
10644        });
10645    });
10646
10647    let mut cx = EditorLspTestContext::new_rust(lsp::ServerCapabilities::default(), cx).await;
10648
10649    cx.set_state(indoc! {"ˇ
10650        0_usize
10651        let
10652        33
10653        4.5f32
10654    "});
10655    cx.update_editor(|editor, window, cx| {
10656        editor.show_completions(&ShowCompletions::default(), window, cx);
10657    });
10658    cx.executor().run_until_parked();
10659    cx.condition(|editor, _| editor.context_menu_visible())
10660        .await;
10661    cx.update_editor(|editor, window, cx| {
10662        if let Some(CodeContextMenu::Completions(menu)) = editor.context_menu.borrow_mut().as_ref()
10663        {
10664            assert_eq!(
10665                completion_menu_entries(&menu),
10666                &["let"],
10667                "With no digits in the completion query, no digits should be in the word completions"
10668            );
10669        } else {
10670            panic!("expected completion menu to be open");
10671        }
10672        editor.cancel(&Cancel, window, cx);
10673    });
10674
10675    cx.set_state(indoc! {"10676        0_usize
10677        let
10678        3
10679        33.35f32
10680    "});
10681    cx.update_editor(|editor, window, cx| {
10682        editor.show_completions(&ShowCompletions::default(), window, cx);
10683    });
10684    cx.executor().run_until_parked();
10685    cx.condition(|editor, _| editor.context_menu_visible())
10686        .await;
10687    cx.update_editor(|editor, _, _| {
10688        if let Some(CodeContextMenu::Completions(menu)) = editor.context_menu.borrow_mut().as_ref()
10689        {
10690            assert_eq!(completion_menu_entries(&menu), &["33", "35f32"], "The digit is in the completion query, \
10691                return matching words with digits (`33`, `35f32`) but exclude query duplicates (`3`)");
10692        } else {
10693            panic!("expected completion menu to be open");
10694        }
10695    });
10696}
10697
10698fn gen_text_edit(params: &CompletionParams, text: &str) -> Option<lsp::CompletionTextEdit> {
10699    let position = || lsp::Position {
10700        line: params.text_document_position.position.line,
10701        character: params.text_document_position.position.character,
10702    };
10703    Some(lsp::CompletionTextEdit::Edit(lsp::TextEdit {
10704        range: lsp::Range {
10705            start: position(),
10706            end: position(),
10707        },
10708        new_text: text.to_string(),
10709    }))
10710}
10711
10712#[gpui::test]
10713async fn test_multiline_completion(cx: &mut TestAppContext) {
10714    init_test(cx, |_| {});
10715
10716    let fs = FakeFs::new(cx.executor());
10717    fs.insert_tree(
10718        path!("/a"),
10719        json!({
10720            "main.ts": "a",
10721        }),
10722    )
10723    .await;
10724
10725    let project = Project::test(fs, [path!("/a").as_ref()], cx).await;
10726    let language_registry = project.read_with(cx, |project, _| project.languages().clone());
10727    let typescript_language = Arc::new(Language::new(
10728        LanguageConfig {
10729            name: "TypeScript".into(),
10730            matcher: LanguageMatcher {
10731                path_suffixes: vec!["ts".to_string()],
10732                ..LanguageMatcher::default()
10733            },
10734            line_comments: vec!["// ".into()],
10735            ..LanguageConfig::default()
10736        },
10737        Some(tree_sitter_typescript::LANGUAGE_TYPESCRIPT.into()),
10738    ));
10739    language_registry.add(typescript_language.clone());
10740    let mut fake_servers = language_registry.register_fake_lsp(
10741        "TypeScript",
10742        FakeLspAdapter {
10743            capabilities: lsp::ServerCapabilities {
10744                completion_provider: Some(lsp::CompletionOptions {
10745                    trigger_characters: Some(vec![".".to_string(), ":".to_string()]),
10746                    ..lsp::CompletionOptions::default()
10747                }),
10748                signature_help_provider: Some(lsp::SignatureHelpOptions::default()),
10749                ..lsp::ServerCapabilities::default()
10750            },
10751            // Emulate vtsls label generation
10752            label_for_completion: Some(Box::new(|item, _| {
10753                let text = if let Some(description) = item
10754                    .label_details
10755                    .as_ref()
10756                    .and_then(|label_details| label_details.description.as_ref())
10757                {
10758                    format!("{} {}", item.label, description)
10759                } else if let Some(detail) = &item.detail {
10760                    format!("{} {}", item.label, detail)
10761                } else {
10762                    item.label.clone()
10763                };
10764                let len = text.len();
10765                Some(language::CodeLabel {
10766                    text,
10767                    runs: Vec::new(),
10768                    filter_range: 0..len,
10769                })
10770            })),
10771            ..FakeLspAdapter::default()
10772        },
10773    );
10774    let workspace = cx.add_window(|window, cx| Workspace::test_new(project.clone(), window, cx));
10775    let cx = &mut VisualTestContext::from_window(*workspace, cx);
10776    let worktree_id = workspace
10777        .update(cx, |workspace, _window, cx| {
10778            workspace.project().update(cx, |project, cx| {
10779                project.worktrees(cx).next().unwrap().read(cx).id()
10780            })
10781        })
10782        .unwrap();
10783    let _buffer = project
10784        .update(cx, |project, cx| {
10785            project.open_local_buffer_with_lsp(path!("/a/main.ts"), cx)
10786        })
10787        .await
10788        .unwrap();
10789    let editor = workspace
10790        .update(cx, |workspace, window, cx| {
10791            workspace.open_path((worktree_id, "main.ts"), None, true, window, cx)
10792        })
10793        .unwrap()
10794        .await
10795        .unwrap()
10796        .downcast::<Editor>()
10797        .unwrap();
10798    let fake_server = fake_servers.next().await.unwrap();
10799
10800    let multiline_label = "StickyHeaderExcerpt {\n            excerpt,\n            next_excerpt_controls_present,\n            next_buffer_row,\n        }: StickyHeaderExcerpt<'_>,";
10801    let multiline_label_2 = "a\nb\nc\n";
10802    let multiline_detail = "[]struct {\n\tSignerId\tstruct {\n\t\tIssuer\t\t\tstring\t`json:\"issuer\"`\n\t\tSubjectSerialNumber\"`\n}}";
10803    let multiline_description = "d\ne\nf\n";
10804    let multiline_detail_2 = "g\nh\ni\n";
10805
10806    let mut completion_handle = fake_server.set_request_handler::<lsp::request::Completion, _, _>(
10807        move |params, _| async move {
10808            Ok(Some(lsp::CompletionResponse::Array(vec![
10809                lsp::CompletionItem {
10810                    label: multiline_label.to_string(),
10811                    text_edit: gen_text_edit(&params, "new_text_1"),
10812                    ..lsp::CompletionItem::default()
10813                },
10814                lsp::CompletionItem {
10815                    label: "single line label 1".to_string(),
10816                    detail: Some(multiline_detail.to_string()),
10817                    text_edit: gen_text_edit(&params, "new_text_2"),
10818                    ..lsp::CompletionItem::default()
10819                },
10820                lsp::CompletionItem {
10821                    label: "single line label 2".to_string(),
10822                    label_details: Some(lsp::CompletionItemLabelDetails {
10823                        description: Some(multiline_description.to_string()),
10824                        detail: None,
10825                    }),
10826                    text_edit: gen_text_edit(&params, "new_text_2"),
10827                    ..lsp::CompletionItem::default()
10828                },
10829                lsp::CompletionItem {
10830                    label: multiline_label_2.to_string(),
10831                    detail: Some(multiline_detail_2.to_string()),
10832                    text_edit: gen_text_edit(&params, "new_text_3"),
10833                    ..lsp::CompletionItem::default()
10834                },
10835                lsp::CompletionItem {
10836                    label: "Label with many     spaces and \t but without newlines".to_string(),
10837                    detail: Some(
10838                        "Details with many     spaces and \t but without newlines".to_string(),
10839                    ),
10840                    text_edit: gen_text_edit(&params, "new_text_4"),
10841                    ..lsp::CompletionItem::default()
10842                },
10843            ])))
10844        },
10845    );
10846
10847    editor.update_in(cx, |editor, window, cx| {
10848        cx.focus_self(window);
10849        editor.move_to_end(&MoveToEnd, window, cx);
10850        editor.handle_input(".", window, cx);
10851    });
10852    cx.run_until_parked();
10853    completion_handle.next().await.unwrap();
10854
10855    editor.update(cx, |editor, _| {
10856        assert!(editor.context_menu_visible());
10857        if let Some(CodeContextMenu::Completions(menu)) = editor.context_menu.borrow_mut().as_ref()
10858        {
10859            let completion_labels = menu
10860                .completions
10861                .borrow()
10862                .iter()
10863                .map(|c| c.label.text.clone())
10864                .collect::<Vec<_>>();
10865            assert_eq!(
10866                completion_labels,
10867                &[
10868                    "StickyHeaderExcerpt { excerpt, next_excerpt_controls_present, next_buffer_row, }: StickyHeaderExcerpt<'_>,",
10869                    "single line label 1 []struct { SignerId struct { Issuer string `json:\"issuer\"` SubjectSerialNumber\"` }}",
10870                    "single line label 2 d e f ",
10871                    "a b c g h i ",
10872                    "Label with many     spaces and \t but without newlines Details with many     spaces and \t but without newlines",
10873                ],
10874                "Completion items should have their labels without newlines, also replacing excessive whitespaces. Completion items without newlines should not be altered.",
10875            );
10876
10877            for completion in menu
10878                .completions
10879                .borrow()
10880                .iter() {
10881                    assert_eq!(
10882                        completion.label.filter_range,
10883                        0..completion.label.text.len(),
10884                        "Adjusted completion items should still keep their filter ranges for the entire label. Item: {completion:?}"
10885                    );
10886                }
10887        } else {
10888            panic!("expected completion menu to be open");
10889        }
10890    });
10891}
10892
10893#[gpui::test]
10894async fn test_completion_page_up_down_keys(cx: &mut TestAppContext) {
10895    init_test(cx, |_| {});
10896    let mut cx = EditorLspTestContext::new_rust(
10897        lsp::ServerCapabilities {
10898            completion_provider: Some(lsp::CompletionOptions {
10899                trigger_characters: Some(vec![".".to_string()]),
10900                ..Default::default()
10901            }),
10902            ..Default::default()
10903        },
10904        cx,
10905    )
10906    .await;
10907    cx.lsp
10908        .set_request_handler::<lsp::request::Completion, _, _>(move |_, _| async move {
10909            Ok(Some(lsp::CompletionResponse::Array(vec![
10910                lsp::CompletionItem {
10911                    label: "first".into(),
10912                    ..Default::default()
10913                },
10914                lsp::CompletionItem {
10915                    label: "last".into(),
10916                    ..Default::default()
10917                },
10918            ])))
10919        });
10920    cx.set_state("variableˇ");
10921    cx.simulate_keystroke(".");
10922    cx.executor().run_until_parked();
10923
10924    cx.update_editor(|editor, _, _| {
10925        if let Some(CodeContextMenu::Completions(menu)) = editor.context_menu.borrow_mut().as_ref()
10926        {
10927            assert_eq!(completion_menu_entries(&menu), &["first", "last"]);
10928        } else {
10929            panic!("expected completion menu to be open");
10930        }
10931    });
10932
10933    cx.update_editor(|editor, window, cx| {
10934        editor.move_page_down(&MovePageDown::default(), window, cx);
10935        if let Some(CodeContextMenu::Completions(menu)) = editor.context_menu.borrow_mut().as_ref()
10936        {
10937            assert!(
10938                menu.selected_item == 1,
10939                "expected PageDown to select the last item from the context menu"
10940            );
10941        } else {
10942            panic!("expected completion menu to stay open after PageDown");
10943        }
10944    });
10945
10946    cx.update_editor(|editor, window, cx| {
10947        editor.move_page_up(&MovePageUp::default(), window, cx);
10948        if let Some(CodeContextMenu::Completions(menu)) = editor.context_menu.borrow_mut().as_ref()
10949        {
10950            assert!(
10951                menu.selected_item == 0,
10952                "expected PageUp to select the first item from the context menu"
10953            );
10954        } else {
10955            panic!("expected completion menu to stay open after PageUp");
10956        }
10957    });
10958}
10959
10960#[gpui::test]
10961async fn test_completion_sort(cx: &mut TestAppContext) {
10962    init_test(cx, |_| {});
10963    let mut cx = EditorLspTestContext::new_rust(
10964        lsp::ServerCapabilities {
10965            completion_provider: Some(lsp::CompletionOptions {
10966                trigger_characters: Some(vec![".".to_string()]),
10967                ..Default::default()
10968            }),
10969            ..Default::default()
10970        },
10971        cx,
10972    )
10973    .await;
10974    cx.lsp
10975        .set_request_handler::<lsp::request::Completion, _, _>(move |_, _| async move {
10976            Ok(Some(lsp::CompletionResponse::Array(vec![
10977                lsp::CompletionItem {
10978                    label: "Range".into(),
10979                    sort_text: Some("a".into()),
10980                    ..Default::default()
10981                },
10982                lsp::CompletionItem {
10983                    label: "r".into(),
10984                    sort_text: Some("b".into()),
10985                    ..Default::default()
10986                },
10987                lsp::CompletionItem {
10988                    label: "ret".into(),
10989                    sort_text: Some("c".into()),
10990                    ..Default::default()
10991                },
10992                lsp::CompletionItem {
10993                    label: "return".into(),
10994                    sort_text: Some("d".into()),
10995                    ..Default::default()
10996                },
10997                lsp::CompletionItem {
10998                    label: "slice".into(),
10999                    sort_text: Some("d".into()),
11000                    ..Default::default()
11001                },
11002            ])))
11003        });
11004    cx.set_state("");
11005    cx.executor().run_until_parked();
11006    cx.update_editor(|editor, window, cx| {
11007        editor.show_completions(
11008            &ShowCompletions {
11009                trigger: Some("r".into()),
11010            },
11011            window,
11012            cx,
11013        );
11014    });
11015    cx.executor().run_until_parked();
11016
11017    cx.update_editor(|editor, _, _| {
11018        if let Some(CodeContextMenu::Completions(menu)) = editor.context_menu.borrow_mut().as_ref()
11019        {
11020            assert_eq!(
11021                completion_menu_entries(&menu),
11022                &["r", "ret", "Range", "return"]
11023            );
11024        } else {
11025            panic!("expected completion menu to be open");
11026        }
11027    });
11028}
11029
11030#[gpui::test]
11031async fn test_as_is_completions(cx: &mut TestAppContext) {
11032    init_test(cx, |_| {});
11033    let mut cx = EditorLspTestContext::new_rust(
11034        lsp::ServerCapabilities {
11035            completion_provider: Some(lsp::CompletionOptions {
11036                ..Default::default()
11037            }),
11038            ..Default::default()
11039        },
11040        cx,
11041    )
11042    .await;
11043    cx.lsp
11044        .set_request_handler::<lsp::request::Completion, _, _>(move |_, _| async move {
11045            Ok(Some(lsp::CompletionResponse::Array(vec![
11046                lsp::CompletionItem {
11047                    label: "unsafe".into(),
11048                    text_edit: Some(lsp::CompletionTextEdit::Edit(lsp::TextEdit {
11049                        range: lsp::Range {
11050                            start: lsp::Position {
11051                                line: 1,
11052                                character: 2,
11053                            },
11054                            end: lsp::Position {
11055                                line: 1,
11056                                character: 3,
11057                            },
11058                        },
11059                        new_text: "unsafe".to_string(),
11060                    })),
11061                    insert_text_mode: Some(lsp::InsertTextMode::AS_IS),
11062                    ..Default::default()
11063                },
11064            ])))
11065        });
11066    cx.set_state("fn a() {}\n");
11067    cx.executor().run_until_parked();
11068    cx.update_editor(|editor, window, cx| {
11069        editor.show_completions(
11070            &ShowCompletions {
11071                trigger: Some("\n".into()),
11072            },
11073            window,
11074            cx,
11075        );
11076    });
11077    cx.executor().run_until_parked();
11078
11079    cx.update_editor(|editor, window, cx| {
11080        editor.confirm_completion(&Default::default(), window, cx)
11081    });
11082    cx.executor().run_until_parked();
11083    cx.assert_editor_state("fn a() {}\n  unsafeˇ");
11084}
11085
11086#[gpui::test]
11087async fn test_no_duplicated_completion_requests(cx: &mut TestAppContext) {
11088    init_test(cx, |_| {});
11089
11090    let mut cx = EditorLspTestContext::new_rust(
11091        lsp::ServerCapabilities {
11092            completion_provider: Some(lsp::CompletionOptions {
11093                trigger_characters: Some(vec![".".to_string()]),
11094                resolve_provider: Some(true),
11095                ..Default::default()
11096            }),
11097            ..Default::default()
11098        },
11099        cx,
11100    )
11101    .await;
11102
11103    cx.set_state("fn main() { let a = 2ˇ; }");
11104    cx.simulate_keystroke(".");
11105    let completion_item = lsp::CompletionItem {
11106        label: "Some".into(),
11107        kind: Some(lsp::CompletionItemKind::SNIPPET),
11108        detail: Some("Wrap the expression in an `Option::Some`".to_string()),
11109        documentation: Some(lsp::Documentation::MarkupContent(lsp::MarkupContent {
11110            kind: lsp::MarkupKind::Markdown,
11111            value: "```rust\nSome(2)\n```".to_string(),
11112        })),
11113        deprecated: Some(false),
11114        sort_text: Some("Some".to_string()),
11115        filter_text: Some("Some".to_string()),
11116        insert_text_format: Some(lsp::InsertTextFormat::SNIPPET),
11117        text_edit: Some(lsp::CompletionTextEdit::Edit(lsp::TextEdit {
11118            range: lsp::Range {
11119                start: lsp::Position {
11120                    line: 0,
11121                    character: 22,
11122                },
11123                end: lsp::Position {
11124                    line: 0,
11125                    character: 22,
11126                },
11127            },
11128            new_text: "Some(2)".to_string(),
11129        })),
11130        additional_text_edits: Some(vec![lsp::TextEdit {
11131            range: lsp::Range {
11132                start: lsp::Position {
11133                    line: 0,
11134                    character: 20,
11135                },
11136                end: lsp::Position {
11137                    line: 0,
11138                    character: 22,
11139                },
11140            },
11141            new_text: "".to_string(),
11142        }]),
11143        ..Default::default()
11144    };
11145
11146    let closure_completion_item = completion_item.clone();
11147    let counter = Arc::new(AtomicUsize::new(0));
11148    let counter_clone = counter.clone();
11149    let mut request = cx.set_request_handler::<lsp::request::Completion, _, _>(move |_, _, _| {
11150        let task_completion_item = closure_completion_item.clone();
11151        counter_clone.fetch_add(1, atomic::Ordering::Release);
11152        async move {
11153            Ok(Some(lsp::CompletionResponse::Array(vec![
11154                task_completion_item,
11155            ])))
11156        }
11157    });
11158
11159    cx.condition(|editor, _| editor.context_menu_visible())
11160        .await;
11161    cx.assert_editor_state("fn main() { let a = 2.ˇ; }");
11162    assert!(request.next().await.is_some());
11163    assert_eq!(counter.load(atomic::Ordering::Acquire), 1);
11164
11165    cx.simulate_keystrokes("S o m");
11166    cx.condition(|editor, _| editor.context_menu_visible())
11167        .await;
11168    cx.assert_editor_state("fn main() { let a = 2.Somˇ; }");
11169    assert!(request.next().await.is_some());
11170    assert!(request.next().await.is_some());
11171    assert!(request.next().await.is_some());
11172    request.close();
11173    assert!(request.next().await.is_none());
11174    assert_eq!(
11175        counter.load(atomic::Ordering::Acquire),
11176        4,
11177        "With the completions menu open, only one LSP request should happen per input"
11178    );
11179}
11180
11181#[gpui::test]
11182async fn test_toggle_comment(cx: &mut TestAppContext) {
11183    init_test(cx, |_| {});
11184    let mut cx = EditorTestContext::new(cx).await;
11185    let language = Arc::new(Language::new(
11186        LanguageConfig {
11187            line_comments: vec!["// ".into(), "//! ".into(), "/// ".into()],
11188            ..Default::default()
11189        },
11190        Some(tree_sitter_rust::LANGUAGE.into()),
11191    ));
11192    cx.update_buffer(|buffer, cx| buffer.set_language(Some(language), cx));
11193
11194    // If multiple selections intersect a line, the line is only toggled once.
11195    cx.set_state(indoc! {"
11196        fn a() {
11197            «//b();
11198            ˇ»// «c();
11199            //ˇ»  d();
11200        }
11201    "});
11202
11203    cx.update_editor(|e, window, cx| e.toggle_comments(&ToggleComments::default(), window, cx));
11204
11205    cx.assert_editor_state(indoc! {"
11206        fn a() {
11207            «b();
11208            c();
11209            ˇ» d();
11210        }
11211    "});
11212
11213    // The comment prefix is inserted at the same column for every line in a
11214    // selection.
11215    cx.update_editor(|e, window, cx| e.toggle_comments(&ToggleComments::default(), window, cx));
11216
11217    cx.assert_editor_state(indoc! {"
11218        fn a() {
11219            // «b();
11220            // c();
11221            ˇ»//  d();
11222        }
11223    "});
11224
11225    // If a selection ends at the beginning of a line, that line is not toggled.
11226    cx.set_selections_state(indoc! {"
11227        fn a() {
11228            // b();
11229            «// c();
11230        ˇ»    //  d();
11231        }
11232    "});
11233
11234    cx.update_editor(|e, window, cx| e.toggle_comments(&ToggleComments::default(), window, cx));
11235
11236    cx.assert_editor_state(indoc! {"
11237        fn a() {
11238            // b();
11239            «c();
11240        ˇ»    //  d();
11241        }
11242    "});
11243
11244    // If a selection span a single line and is empty, the line is toggled.
11245    cx.set_state(indoc! {"
11246        fn a() {
11247            a();
11248            b();
11249        ˇ
11250        }
11251    "});
11252
11253    cx.update_editor(|e, window, cx| e.toggle_comments(&ToggleComments::default(), window, cx));
11254
11255    cx.assert_editor_state(indoc! {"
11256        fn a() {
11257            a();
11258            b();
11259        //•ˇ
11260        }
11261    "});
11262
11263    // If a selection span multiple lines, empty lines are not toggled.
11264    cx.set_state(indoc! {"
11265        fn a() {
11266            «a();
11267
11268            c();ˇ»
11269        }
11270    "});
11271
11272    cx.update_editor(|e, window, cx| e.toggle_comments(&ToggleComments::default(), window, cx));
11273
11274    cx.assert_editor_state(indoc! {"
11275        fn a() {
11276            // «a();
11277
11278            // c();ˇ»
11279        }
11280    "});
11281
11282    // If a selection includes multiple comment prefixes, all lines are uncommented.
11283    cx.set_state(indoc! {"
11284        fn a() {
11285            «// a();
11286            /// b();
11287            //! c();ˇ»
11288        }
11289    "});
11290
11291    cx.update_editor(|e, window, cx| e.toggle_comments(&ToggleComments::default(), window, cx));
11292
11293    cx.assert_editor_state(indoc! {"
11294        fn a() {
11295            «a();
11296            b();
11297            c();ˇ»
11298        }
11299    "});
11300}
11301
11302#[gpui::test]
11303async fn test_toggle_comment_ignore_indent(cx: &mut TestAppContext) {
11304    init_test(cx, |_| {});
11305    let mut cx = EditorTestContext::new(cx).await;
11306    let language = Arc::new(Language::new(
11307        LanguageConfig {
11308            line_comments: vec!["// ".into(), "//! ".into(), "/// ".into()],
11309            ..Default::default()
11310        },
11311        Some(tree_sitter_rust::LANGUAGE.into()),
11312    ));
11313    cx.update_buffer(|buffer, cx| buffer.set_language(Some(language), cx));
11314
11315    let toggle_comments = &ToggleComments {
11316        advance_downwards: false,
11317        ignore_indent: true,
11318    };
11319
11320    // If multiple selections intersect a line, the line is only toggled once.
11321    cx.set_state(indoc! {"
11322        fn a() {
11323        //    «b();
11324        //    c();
11325        //    ˇ» d();
11326        }
11327    "});
11328
11329    cx.update_editor(|e, window, cx| e.toggle_comments(toggle_comments, window, cx));
11330
11331    cx.assert_editor_state(indoc! {"
11332        fn a() {
11333            «b();
11334            c();
11335            ˇ» d();
11336        }
11337    "});
11338
11339    // The comment prefix is inserted at the beginning of each line
11340    cx.update_editor(|e, window, cx| e.toggle_comments(toggle_comments, window, cx));
11341
11342    cx.assert_editor_state(indoc! {"
11343        fn a() {
11344        //    «b();
11345        //    c();
11346        //    ˇ» d();
11347        }
11348    "});
11349
11350    // If a selection ends at the beginning of a line, that line is not toggled.
11351    cx.set_selections_state(indoc! {"
11352        fn a() {
11353        //    b();
11354        //    «c();
11355        ˇ»//     d();
11356        }
11357    "});
11358
11359    cx.update_editor(|e, window, cx| e.toggle_comments(toggle_comments, window, cx));
11360
11361    cx.assert_editor_state(indoc! {"
11362        fn a() {
11363        //    b();
11364            «c();
11365        ˇ»//     d();
11366        }
11367    "});
11368
11369    // If a selection span a single line and is empty, the line is toggled.
11370    cx.set_state(indoc! {"
11371        fn a() {
11372            a();
11373            b();
11374        ˇ
11375        }
11376    "});
11377
11378    cx.update_editor(|e, window, cx| e.toggle_comments(toggle_comments, window, cx));
11379
11380    cx.assert_editor_state(indoc! {"
11381        fn a() {
11382            a();
11383            b();
11384        //ˇ
11385        }
11386    "});
11387
11388    // If a selection span multiple lines, empty lines are not toggled.
11389    cx.set_state(indoc! {"
11390        fn a() {
11391            «a();
11392
11393            c();ˇ»
11394        }
11395    "});
11396
11397    cx.update_editor(|e, window, cx| e.toggle_comments(toggle_comments, window, cx));
11398
11399    cx.assert_editor_state(indoc! {"
11400        fn a() {
11401        //    «a();
11402
11403        //    c();ˇ»
11404        }
11405    "});
11406
11407    // If a selection includes multiple comment prefixes, all lines are uncommented.
11408    cx.set_state(indoc! {"
11409        fn a() {
11410        //    «a();
11411        ///    b();
11412        //!    c();ˇ»
11413        }
11414    "});
11415
11416    cx.update_editor(|e, window, cx| e.toggle_comments(toggle_comments, window, cx));
11417
11418    cx.assert_editor_state(indoc! {"
11419        fn a() {
11420            «a();
11421            b();
11422            c();ˇ»
11423        }
11424    "});
11425}
11426
11427#[gpui::test]
11428async fn test_advance_downward_on_toggle_comment(cx: &mut TestAppContext) {
11429    init_test(cx, |_| {});
11430
11431    let language = Arc::new(Language::new(
11432        LanguageConfig {
11433            line_comments: vec!["// ".into()],
11434            ..Default::default()
11435        },
11436        Some(tree_sitter_rust::LANGUAGE.into()),
11437    ));
11438
11439    let mut cx = EditorTestContext::new(cx).await;
11440
11441    cx.language_registry().add(language.clone());
11442    cx.update_buffer(|buffer, cx| {
11443        buffer.set_language(Some(language), cx);
11444    });
11445
11446    let toggle_comments = &ToggleComments {
11447        advance_downwards: true,
11448        ignore_indent: false,
11449    };
11450
11451    // Single cursor on one line -> advance
11452    // Cursor moves horizontally 3 characters as well on non-blank line
11453    cx.set_state(indoc!(
11454        "fn a() {
11455             ˇdog();
11456             cat();
11457        }"
11458    ));
11459    cx.update_editor(|editor, window, cx| {
11460        editor.toggle_comments(toggle_comments, window, cx);
11461    });
11462    cx.assert_editor_state(indoc!(
11463        "fn a() {
11464             // dog();
11465             catˇ();
11466        }"
11467    ));
11468
11469    // Single selection on one line -> don't advance
11470    cx.set_state(indoc!(
11471        "fn a() {
11472             «dog()ˇ»;
11473             cat();
11474        }"
11475    ));
11476    cx.update_editor(|editor, window, cx| {
11477        editor.toggle_comments(toggle_comments, window, cx);
11478    });
11479    cx.assert_editor_state(indoc!(
11480        "fn a() {
11481             // «dog()ˇ»;
11482             cat();
11483        }"
11484    ));
11485
11486    // Multiple cursors on one line -> advance
11487    cx.set_state(indoc!(
11488        "fn a() {
11489             ˇdˇog();
11490             cat();
11491        }"
11492    ));
11493    cx.update_editor(|editor, window, cx| {
11494        editor.toggle_comments(toggle_comments, window, cx);
11495    });
11496    cx.assert_editor_state(indoc!(
11497        "fn a() {
11498             // dog();
11499             catˇ(ˇ);
11500        }"
11501    ));
11502
11503    // Multiple cursors on one line, with selection -> don't advance
11504    cx.set_state(indoc!(
11505        "fn a() {
11506             ˇdˇog«()ˇ»;
11507             cat();
11508        }"
11509    ));
11510    cx.update_editor(|editor, window, cx| {
11511        editor.toggle_comments(toggle_comments, window, cx);
11512    });
11513    cx.assert_editor_state(indoc!(
11514        "fn a() {
11515             // ˇdˇog«()ˇ»;
11516             cat();
11517        }"
11518    ));
11519
11520    // Single cursor on one line -> advance
11521    // Cursor moves to column 0 on blank line
11522    cx.set_state(indoc!(
11523        "fn a() {
11524             ˇdog();
11525
11526             cat();
11527        }"
11528    ));
11529    cx.update_editor(|editor, window, cx| {
11530        editor.toggle_comments(toggle_comments, window, cx);
11531    });
11532    cx.assert_editor_state(indoc!(
11533        "fn a() {
11534             // dog();
11535        ˇ
11536             cat();
11537        }"
11538    ));
11539
11540    // Single cursor on one line -> advance
11541    // Cursor starts and ends at column 0
11542    cx.set_state(indoc!(
11543        "fn a() {
11544         ˇ    dog();
11545             cat();
11546        }"
11547    ));
11548    cx.update_editor(|editor, window, cx| {
11549        editor.toggle_comments(toggle_comments, window, cx);
11550    });
11551    cx.assert_editor_state(indoc!(
11552        "fn a() {
11553             // dog();
11554         ˇ    cat();
11555        }"
11556    ));
11557}
11558
11559#[gpui::test]
11560async fn test_toggle_block_comment(cx: &mut TestAppContext) {
11561    init_test(cx, |_| {});
11562
11563    let mut cx = EditorTestContext::new(cx).await;
11564
11565    let html_language = Arc::new(
11566        Language::new(
11567            LanguageConfig {
11568                name: "HTML".into(),
11569                block_comment: Some(("<!-- ".into(), " -->".into())),
11570                ..Default::default()
11571            },
11572            Some(tree_sitter_html::LANGUAGE.into()),
11573        )
11574        .with_injection_query(
11575            r#"
11576            (script_element
11577                (raw_text) @injection.content
11578                (#set! injection.language "javascript"))
11579            "#,
11580        )
11581        .unwrap(),
11582    );
11583
11584    let javascript_language = Arc::new(Language::new(
11585        LanguageConfig {
11586            name: "JavaScript".into(),
11587            line_comments: vec!["// ".into()],
11588            ..Default::default()
11589        },
11590        Some(tree_sitter_typescript::LANGUAGE_TSX.into()),
11591    ));
11592
11593    cx.language_registry().add(html_language.clone());
11594    cx.language_registry().add(javascript_language.clone());
11595    cx.update_buffer(|buffer, cx| {
11596        buffer.set_language(Some(html_language), cx);
11597    });
11598
11599    // Toggle comments for empty selections
11600    cx.set_state(
11601        &r#"
11602            <p>A</p>ˇ
11603            <p>B</p>ˇ
11604            <p>C</p>ˇ
11605        "#
11606        .unindent(),
11607    );
11608    cx.update_editor(|editor, window, cx| {
11609        editor.toggle_comments(&ToggleComments::default(), window, cx)
11610    });
11611    cx.assert_editor_state(
11612        &r#"
11613            <!-- <p>A</p>ˇ -->
11614            <!-- <p>B</p>ˇ -->
11615            <!-- <p>C</p>ˇ -->
11616        "#
11617        .unindent(),
11618    );
11619    cx.update_editor(|editor, window, cx| {
11620        editor.toggle_comments(&ToggleComments::default(), window, cx)
11621    });
11622    cx.assert_editor_state(
11623        &r#"
11624            <p>A</p>ˇ
11625            <p>B</p>ˇ
11626            <p>C</p>ˇ
11627        "#
11628        .unindent(),
11629    );
11630
11631    // Toggle comments for mixture of empty and non-empty selections, where
11632    // multiple selections occupy a given line.
11633    cx.set_state(
11634        &r#"
11635            <p>A«</p>
11636            <p>ˇ»B</p>ˇ
11637            <p>C«</p>
11638            <p>ˇ»D</p>ˇ
11639        "#
11640        .unindent(),
11641    );
11642
11643    cx.update_editor(|editor, window, cx| {
11644        editor.toggle_comments(&ToggleComments::default(), window, cx)
11645    });
11646    cx.assert_editor_state(
11647        &r#"
11648            <!-- <p>A«</p>
11649            <p>ˇ»B</p>ˇ -->
11650            <!-- <p>C«</p>
11651            <p>ˇ»D</p>ˇ -->
11652        "#
11653        .unindent(),
11654    );
11655    cx.update_editor(|editor, window, cx| {
11656        editor.toggle_comments(&ToggleComments::default(), window, cx)
11657    });
11658    cx.assert_editor_state(
11659        &r#"
11660            <p>A«</p>
11661            <p>ˇ»B</p>ˇ
11662            <p>C«</p>
11663            <p>ˇ»D</p>ˇ
11664        "#
11665        .unindent(),
11666    );
11667
11668    // Toggle comments when different languages are active for different
11669    // selections.
11670    cx.set_state(
11671        &r#"
11672            ˇ<script>
11673                ˇvar x = new Y();
11674            ˇ</script>
11675        "#
11676        .unindent(),
11677    );
11678    cx.executor().run_until_parked();
11679    cx.update_editor(|editor, window, cx| {
11680        editor.toggle_comments(&ToggleComments::default(), window, cx)
11681    });
11682    // TODO this is how it actually worked in Zed Stable, which is not very ergonomic.
11683    // Uncommenting and commenting from this position brings in even more wrong artifacts.
11684    cx.assert_editor_state(
11685        &r#"
11686            <!-- ˇ<script> -->
11687                // ˇvar x = new Y();
11688            <!-- ˇ</script> -->
11689        "#
11690        .unindent(),
11691    );
11692}
11693
11694#[gpui::test]
11695fn test_editing_disjoint_excerpts(cx: &mut TestAppContext) {
11696    init_test(cx, |_| {});
11697
11698    let buffer = cx.new(|cx| Buffer::local(sample_text(3, 4, 'a'), cx));
11699    let multibuffer = cx.new(|cx| {
11700        let mut multibuffer = MultiBuffer::new(ReadWrite);
11701        multibuffer.push_excerpts(
11702            buffer.clone(),
11703            [
11704                ExcerptRange::new(Point::new(0, 0)..Point::new(0, 4)),
11705                ExcerptRange::new(Point::new(1, 0)..Point::new(1, 4)),
11706            ],
11707            cx,
11708        );
11709        assert_eq!(multibuffer.read(cx).text(), "aaaa\nbbbb");
11710        multibuffer
11711    });
11712
11713    let (editor, cx) = cx.add_window_view(|window, cx| build_editor(multibuffer, window, cx));
11714    editor.update_in(cx, |editor, window, cx| {
11715        assert_eq!(editor.text(cx), "aaaa\nbbbb");
11716        editor.change_selections(None, window, cx, |s| {
11717            s.select_ranges([
11718                Point::new(0, 0)..Point::new(0, 0),
11719                Point::new(1, 0)..Point::new(1, 0),
11720            ])
11721        });
11722
11723        editor.handle_input("X", window, cx);
11724        assert_eq!(editor.text(cx), "Xaaaa\nXbbbb");
11725        assert_eq!(
11726            editor.selections.ranges(cx),
11727            [
11728                Point::new(0, 1)..Point::new(0, 1),
11729                Point::new(1, 1)..Point::new(1, 1),
11730            ]
11731        );
11732
11733        // Ensure the cursor's head is respected when deleting across an excerpt boundary.
11734        editor.change_selections(None, window, cx, |s| {
11735            s.select_ranges([Point::new(0, 2)..Point::new(1, 2)])
11736        });
11737        editor.backspace(&Default::default(), window, cx);
11738        assert_eq!(editor.text(cx), "Xa\nbbb");
11739        assert_eq!(
11740            editor.selections.ranges(cx),
11741            [Point::new(1, 0)..Point::new(1, 0)]
11742        );
11743
11744        editor.change_selections(None, window, cx, |s| {
11745            s.select_ranges([Point::new(1, 1)..Point::new(0, 1)])
11746        });
11747        editor.backspace(&Default::default(), window, cx);
11748        assert_eq!(editor.text(cx), "X\nbb");
11749        assert_eq!(
11750            editor.selections.ranges(cx),
11751            [Point::new(0, 1)..Point::new(0, 1)]
11752        );
11753    });
11754}
11755
11756#[gpui::test]
11757fn test_editing_overlapping_excerpts(cx: &mut TestAppContext) {
11758    init_test(cx, |_| {});
11759
11760    let markers = vec![('[', ']').into(), ('(', ')').into()];
11761    let (initial_text, mut excerpt_ranges) = marked_text_ranges_by(
11762        indoc! {"
11763            [aaaa
11764            (bbbb]
11765            cccc)",
11766        },
11767        markers.clone(),
11768    );
11769    let excerpt_ranges = markers.into_iter().map(|marker| {
11770        let context = excerpt_ranges.remove(&marker).unwrap()[0].clone();
11771        ExcerptRange::new(context.clone())
11772    });
11773    let buffer = cx.new(|cx| Buffer::local(initial_text, cx));
11774    let multibuffer = cx.new(|cx| {
11775        let mut multibuffer = MultiBuffer::new(ReadWrite);
11776        multibuffer.push_excerpts(buffer, excerpt_ranges, cx);
11777        multibuffer
11778    });
11779
11780    let (editor, cx) = cx.add_window_view(|window, cx| build_editor(multibuffer, window, cx));
11781    editor.update_in(cx, |editor, window, cx| {
11782        let (expected_text, selection_ranges) = marked_text_ranges(
11783            indoc! {"
11784                aaaa
11785                bˇbbb
11786                bˇbbˇb
11787                cccc"
11788            },
11789            true,
11790        );
11791        assert_eq!(editor.text(cx), expected_text);
11792        editor.change_selections(None, window, cx, |s| s.select_ranges(selection_ranges));
11793
11794        editor.handle_input("X", window, cx);
11795
11796        let (expected_text, expected_selections) = marked_text_ranges(
11797            indoc! {"
11798                aaaa
11799                bXˇbbXb
11800                bXˇbbXˇb
11801                cccc"
11802            },
11803            false,
11804        );
11805        assert_eq!(editor.text(cx), expected_text);
11806        assert_eq!(editor.selections.ranges(cx), expected_selections);
11807
11808        editor.newline(&Newline, window, cx);
11809        let (expected_text, expected_selections) = marked_text_ranges(
11810            indoc! {"
11811                aaaa
11812                bX
11813                ˇbbX
11814                b
11815                bX
11816                ˇbbX
11817                ˇb
11818                cccc"
11819            },
11820            false,
11821        );
11822        assert_eq!(editor.text(cx), expected_text);
11823        assert_eq!(editor.selections.ranges(cx), expected_selections);
11824    });
11825}
11826
11827#[gpui::test]
11828fn test_refresh_selections(cx: &mut TestAppContext) {
11829    init_test(cx, |_| {});
11830
11831    let buffer = cx.new(|cx| Buffer::local(sample_text(3, 4, 'a'), cx));
11832    let mut excerpt1_id = None;
11833    let multibuffer = cx.new(|cx| {
11834        let mut multibuffer = MultiBuffer::new(ReadWrite);
11835        excerpt1_id = multibuffer
11836            .push_excerpts(
11837                buffer.clone(),
11838                [
11839                    ExcerptRange::new(Point::new(0, 0)..Point::new(1, 4)),
11840                    ExcerptRange::new(Point::new(1, 0)..Point::new(2, 4)),
11841                ],
11842                cx,
11843            )
11844            .into_iter()
11845            .next();
11846        assert_eq!(multibuffer.read(cx).text(), "aaaa\nbbbb\nbbbb\ncccc");
11847        multibuffer
11848    });
11849
11850    let editor = cx.add_window(|window, cx| {
11851        let mut editor = build_editor(multibuffer.clone(), window, cx);
11852        let snapshot = editor.snapshot(window, cx);
11853        editor.change_selections(None, window, cx, |s| {
11854            s.select_ranges([Point::new(1, 3)..Point::new(1, 3)])
11855        });
11856        editor.begin_selection(
11857            Point::new(2, 1).to_display_point(&snapshot),
11858            true,
11859            1,
11860            window,
11861            cx,
11862        );
11863        assert_eq!(
11864            editor.selections.ranges(cx),
11865            [
11866                Point::new(1, 3)..Point::new(1, 3),
11867                Point::new(2, 1)..Point::new(2, 1),
11868            ]
11869        );
11870        editor
11871    });
11872
11873    // Refreshing selections is a no-op when excerpts haven't changed.
11874    _ = editor.update(cx, |editor, window, cx| {
11875        editor.change_selections(None, window, cx, |s| s.refresh());
11876        assert_eq!(
11877            editor.selections.ranges(cx),
11878            [
11879                Point::new(1, 3)..Point::new(1, 3),
11880                Point::new(2, 1)..Point::new(2, 1),
11881            ]
11882        );
11883    });
11884
11885    multibuffer.update(cx, |multibuffer, cx| {
11886        multibuffer.remove_excerpts([excerpt1_id.unwrap()], cx);
11887    });
11888    _ = editor.update(cx, |editor, window, cx| {
11889        // Removing an excerpt causes the first selection to become degenerate.
11890        assert_eq!(
11891            editor.selections.ranges(cx),
11892            [
11893                Point::new(0, 0)..Point::new(0, 0),
11894                Point::new(0, 1)..Point::new(0, 1)
11895            ]
11896        );
11897
11898        // Refreshing selections will relocate the first selection to the original buffer
11899        // location.
11900        editor.change_selections(None, window, cx, |s| s.refresh());
11901        assert_eq!(
11902            editor.selections.ranges(cx),
11903            [
11904                Point::new(0, 1)..Point::new(0, 1),
11905                Point::new(0, 3)..Point::new(0, 3)
11906            ]
11907        );
11908        assert!(editor.selections.pending_anchor().is_some());
11909    });
11910}
11911
11912#[gpui::test]
11913fn test_refresh_selections_while_selecting_with_mouse(cx: &mut TestAppContext) {
11914    init_test(cx, |_| {});
11915
11916    let buffer = cx.new(|cx| Buffer::local(sample_text(3, 4, 'a'), cx));
11917    let mut excerpt1_id = None;
11918    let multibuffer = cx.new(|cx| {
11919        let mut multibuffer = MultiBuffer::new(ReadWrite);
11920        excerpt1_id = multibuffer
11921            .push_excerpts(
11922                buffer.clone(),
11923                [
11924                    ExcerptRange::new(Point::new(0, 0)..Point::new(1, 4)),
11925                    ExcerptRange::new(Point::new(1, 0)..Point::new(2, 4)),
11926                ],
11927                cx,
11928            )
11929            .into_iter()
11930            .next();
11931        assert_eq!(multibuffer.read(cx).text(), "aaaa\nbbbb\nbbbb\ncccc");
11932        multibuffer
11933    });
11934
11935    let editor = cx.add_window(|window, cx| {
11936        let mut editor = build_editor(multibuffer.clone(), window, cx);
11937        let snapshot = editor.snapshot(window, cx);
11938        editor.begin_selection(
11939            Point::new(1, 3).to_display_point(&snapshot),
11940            false,
11941            1,
11942            window,
11943            cx,
11944        );
11945        assert_eq!(
11946            editor.selections.ranges(cx),
11947            [Point::new(1, 3)..Point::new(1, 3)]
11948        );
11949        editor
11950    });
11951
11952    multibuffer.update(cx, |multibuffer, cx| {
11953        multibuffer.remove_excerpts([excerpt1_id.unwrap()], cx);
11954    });
11955    _ = editor.update(cx, |editor, window, cx| {
11956        assert_eq!(
11957            editor.selections.ranges(cx),
11958            [Point::new(0, 0)..Point::new(0, 0)]
11959        );
11960
11961        // Ensure we don't panic when selections are refreshed and that the pending selection is finalized.
11962        editor.change_selections(None, window, cx, |s| s.refresh());
11963        assert_eq!(
11964            editor.selections.ranges(cx),
11965            [Point::new(0, 3)..Point::new(0, 3)]
11966        );
11967        assert!(editor.selections.pending_anchor().is_some());
11968    });
11969}
11970
11971#[gpui::test]
11972async fn test_extra_newline_insertion(cx: &mut TestAppContext) {
11973    init_test(cx, |_| {});
11974
11975    let language = Arc::new(
11976        Language::new(
11977            LanguageConfig {
11978                brackets: BracketPairConfig {
11979                    pairs: vec![
11980                        BracketPair {
11981                            start: "{".to_string(),
11982                            end: "}".to_string(),
11983                            close: true,
11984                            surround: true,
11985                            newline: true,
11986                        },
11987                        BracketPair {
11988                            start: "/* ".to_string(),
11989                            end: " */".to_string(),
11990                            close: true,
11991                            surround: true,
11992                            newline: true,
11993                        },
11994                    ],
11995                    ..Default::default()
11996                },
11997                ..Default::default()
11998            },
11999            Some(tree_sitter_rust::LANGUAGE.into()),
12000        )
12001        .with_indents_query("")
12002        .unwrap(),
12003    );
12004
12005    let text = concat!(
12006        "{   }\n",     //
12007        "  x\n",       //
12008        "  /*   */\n", //
12009        "x\n",         //
12010        "{{} }\n",     //
12011    );
12012
12013    let buffer = cx.new(|cx| Buffer::local(text, cx).with_language(language, cx));
12014    let buffer = cx.new(|cx| MultiBuffer::singleton(buffer, cx));
12015    let (editor, cx) = cx.add_window_view(|window, cx| build_editor(buffer, window, cx));
12016    editor
12017        .condition::<crate::EditorEvent>(cx, |editor, cx| !editor.buffer.read(cx).is_parsing(cx))
12018        .await;
12019
12020    editor.update_in(cx, |editor, window, cx| {
12021        editor.change_selections(None, window, cx, |s| {
12022            s.select_display_ranges([
12023                DisplayPoint::new(DisplayRow(0), 2)..DisplayPoint::new(DisplayRow(0), 3),
12024                DisplayPoint::new(DisplayRow(2), 5)..DisplayPoint::new(DisplayRow(2), 5),
12025                DisplayPoint::new(DisplayRow(4), 4)..DisplayPoint::new(DisplayRow(4), 4),
12026            ])
12027        });
12028        editor.newline(&Newline, window, cx);
12029
12030        assert_eq!(
12031            editor.buffer().read(cx).read(cx).text(),
12032            concat!(
12033                "{ \n",    // Suppress rustfmt
12034                "\n",      //
12035                "}\n",     //
12036                "  x\n",   //
12037                "  /* \n", //
12038                "  \n",    //
12039                "  */\n",  //
12040                "x\n",     //
12041                "{{} \n",  //
12042                "}\n",     //
12043            )
12044        );
12045    });
12046}
12047
12048#[gpui::test]
12049fn test_highlighted_ranges(cx: &mut TestAppContext) {
12050    init_test(cx, |_| {});
12051
12052    let editor = cx.add_window(|window, cx| {
12053        let buffer = MultiBuffer::build_simple(&sample_text(16, 8, 'a'), cx);
12054        build_editor(buffer.clone(), window, cx)
12055    });
12056
12057    _ = editor.update(cx, |editor, window, cx| {
12058        struct Type1;
12059        struct Type2;
12060
12061        let buffer = editor.buffer.read(cx).snapshot(cx);
12062
12063        let anchor_range =
12064            |range: Range<Point>| buffer.anchor_after(range.start)..buffer.anchor_after(range.end);
12065
12066        editor.highlight_background::<Type1>(
12067            &[
12068                anchor_range(Point::new(2, 1)..Point::new(2, 3)),
12069                anchor_range(Point::new(4, 2)..Point::new(4, 4)),
12070                anchor_range(Point::new(6, 3)..Point::new(6, 5)),
12071                anchor_range(Point::new(8, 4)..Point::new(8, 6)),
12072            ],
12073            |_| Hsla::red(),
12074            cx,
12075        );
12076        editor.highlight_background::<Type2>(
12077            &[
12078                anchor_range(Point::new(3, 2)..Point::new(3, 5)),
12079                anchor_range(Point::new(5, 3)..Point::new(5, 6)),
12080                anchor_range(Point::new(7, 4)..Point::new(7, 7)),
12081                anchor_range(Point::new(9, 5)..Point::new(9, 8)),
12082            ],
12083            |_| Hsla::green(),
12084            cx,
12085        );
12086
12087        let snapshot = editor.snapshot(window, cx);
12088        let mut highlighted_ranges = editor.background_highlights_in_range(
12089            anchor_range(Point::new(3, 4)..Point::new(7, 4)),
12090            &snapshot,
12091            cx.theme().colors(),
12092        );
12093        // Enforce a consistent ordering based on color without relying on the ordering of the
12094        // highlight's `TypeId` which is non-executor.
12095        highlighted_ranges.sort_unstable_by_key(|(_, color)| *color);
12096        assert_eq!(
12097            highlighted_ranges,
12098            &[
12099                (
12100                    DisplayPoint::new(DisplayRow(4), 2)..DisplayPoint::new(DisplayRow(4), 4),
12101                    Hsla::red(),
12102                ),
12103                (
12104                    DisplayPoint::new(DisplayRow(6), 3)..DisplayPoint::new(DisplayRow(6), 5),
12105                    Hsla::red(),
12106                ),
12107                (
12108                    DisplayPoint::new(DisplayRow(3), 2)..DisplayPoint::new(DisplayRow(3), 5),
12109                    Hsla::green(),
12110                ),
12111                (
12112                    DisplayPoint::new(DisplayRow(5), 3)..DisplayPoint::new(DisplayRow(5), 6),
12113                    Hsla::green(),
12114                ),
12115            ]
12116        );
12117        assert_eq!(
12118            editor.background_highlights_in_range(
12119                anchor_range(Point::new(5, 6)..Point::new(6, 4)),
12120                &snapshot,
12121                cx.theme().colors(),
12122            ),
12123            &[(
12124                DisplayPoint::new(DisplayRow(6), 3)..DisplayPoint::new(DisplayRow(6), 5),
12125                Hsla::red(),
12126            )]
12127        );
12128    });
12129}
12130
12131#[gpui::test]
12132async fn test_following(cx: &mut TestAppContext) {
12133    init_test(cx, |_| {});
12134
12135    let fs = FakeFs::new(cx.executor());
12136    let project = Project::test(fs, ["/file.rs".as_ref()], cx).await;
12137
12138    let buffer = project.update(cx, |project, cx| {
12139        let buffer = project.create_local_buffer(&sample_text(16, 8, 'a'), None, cx);
12140        cx.new(|cx| MultiBuffer::singleton(buffer, cx))
12141    });
12142    let leader = cx.add_window(|window, cx| build_editor(buffer.clone(), window, cx));
12143    let follower = cx.update(|cx| {
12144        cx.open_window(
12145            WindowOptions {
12146                window_bounds: Some(WindowBounds::Windowed(Bounds::from_corners(
12147                    gpui::Point::new(px(0.), px(0.)),
12148                    gpui::Point::new(px(10.), px(80.)),
12149                ))),
12150                ..Default::default()
12151            },
12152            |window, cx| cx.new(|cx| build_editor(buffer.clone(), window, cx)),
12153        )
12154        .unwrap()
12155    });
12156
12157    let is_still_following = Rc::new(RefCell::new(true));
12158    let follower_edit_event_count = Rc::new(RefCell::new(0));
12159    let pending_update = Rc::new(RefCell::new(None));
12160    let leader_entity = leader.root(cx).unwrap();
12161    let follower_entity = follower.root(cx).unwrap();
12162    _ = follower.update(cx, {
12163        let update = pending_update.clone();
12164        let is_still_following = is_still_following.clone();
12165        let follower_edit_event_count = follower_edit_event_count.clone();
12166        |_, window, cx| {
12167            cx.subscribe_in(
12168                &leader_entity,
12169                window,
12170                move |_, leader, event, window, cx| {
12171                    leader.read(cx).add_event_to_update_proto(
12172                        event,
12173                        &mut update.borrow_mut(),
12174                        window,
12175                        cx,
12176                    );
12177                },
12178            )
12179            .detach();
12180
12181            cx.subscribe_in(
12182                &follower_entity,
12183                window,
12184                move |_, _, event: &EditorEvent, _window, _cx| {
12185                    if matches!(Editor::to_follow_event(event), Some(FollowEvent::Unfollow)) {
12186                        *is_still_following.borrow_mut() = false;
12187                    }
12188
12189                    if let EditorEvent::BufferEdited = event {
12190                        *follower_edit_event_count.borrow_mut() += 1;
12191                    }
12192                },
12193            )
12194            .detach();
12195        }
12196    });
12197
12198    // Update the selections only
12199    _ = leader.update(cx, |leader, window, cx| {
12200        leader.change_selections(None, window, cx, |s| s.select_ranges([1..1]));
12201    });
12202    follower
12203        .update(cx, |follower, window, cx| {
12204            follower.apply_update_proto(
12205                &project,
12206                pending_update.borrow_mut().take().unwrap(),
12207                window,
12208                cx,
12209            )
12210        })
12211        .unwrap()
12212        .await
12213        .unwrap();
12214    _ = follower.update(cx, |follower, _, cx| {
12215        assert_eq!(follower.selections.ranges(cx), vec![1..1]);
12216    });
12217    assert!(*is_still_following.borrow());
12218    assert_eq!(*follower_edit_event_count.borrow(), 0);
12219
12220    // Update the scroll position only
12221    _ = leader.update(cx, |leader, window, cx| {
12222        leader.set_scroll_position(gpui::Point::new(1.5, 3.5), window, cx);
12223    });
12224    follower
12225        .update(cx, |follower, window, cx| {
12226            follower.apply_update_proto(
12227                &project,
12228                pending_update.borrow_mut().take().unwrap(),
12229                window,
12230                cx,
12231            )
12232        })
12233        .unwrap()
12234        .await
12235        .unwrap();
12236    assert_eq!(
12237        follower
12238            .update(cx, |follower, _, cx| follower.scroll_position(cx))
12239            .unwrap(),
12240        gpui::Point::new(1.5, 3.5)
12241    );
12242    assert!(*is_still_following.borrow());
12243    assert_eq!(*follower_edit_event_count.borrow(), 0);
12244
12245    // Update the selections and scroll position. The follower's scroll position is updated
12246    // via autoscroll, not via the leader's exact scroll position.
12247    _ = leader.update(cx, |leader, window, cx| {
12248        leader.change_selections(None, window, cx, |s| s.select_ranges([0..0]));
12249        leader.request_autoscroll(Autoscroll::newest(), cx);
12250        leader.set_scroll_position(gpui::Point::new(1.5, 3.5), window, cx);
12251    });
12252    follower
12253        .update(cx, |follower, window, cx| {
12254            follower.apply_update_proto(
12255                &project,
12256                pending_update.borrow_mut().take().unwrap(),
12257                window,
12258                cx,
12259            )
12260        })
12261        .unwrap()
12262        .await
12263        .unwrap();
12264    _ = follower.update(cx, |follower, _, cx| {
12265        assert_eq!(follower.scroll_position(cx), gpui::Point::new(1.5, 0.0));
12266        assert_eq!(follower.selections.ranges(cx), vec![0..0]);
12267    });
12268    assert!(*is_still_following.borrow());
12269
12270    // Creating a pending selection that precedes another selection
12271    _ = leader.update(cx, |leader, window, cx| {
12272        leader.change_selections(None, window, cx, |s| s.select_ranges([1..1]));
12273        leader.begin_selection(DisplayPoint::new(DisplayRow(0), 0), true, 1, window, cx);
12274    });
12275    follower
12276        .update(cx, |follower, window, cx| {
12277            follower.apply_update_proto(
12278                &project,
12279                pending_update.borrow_mut().take().unwrap(),
12280                window,
12281                cx,
12282            )
12283        })
12284        .unwrap()
12285        .await
12286        .unwrap();
12287    _ = follower.update(cx, |follower, _, cx| {
12288        assert_eq!(follower.selections.ranges(cx), vec![0..0, 1..1]);
12289    });
12290    assert!(*is_still_following.borrow());
12291
12292    // Extend the pending selection so that it surrounds another selection
12293    _ = leader.update(cx, |leader, window, cx| {
12294        leader.extend_selection(DisplayPoint::new(DisplayRow(0), 2), 1, window, cx);
12295    });
12296    follower
12297        .update(cx, |follower, window, cx| {
12298            follower.apply_update_proto(
12299                &project,
12300                pending_update.borrow_mut().take().unwrap(),
12301                window,
12302                cx,
12303            )
12304        })
12305        .unwrap()
12306        .await
12307        .unwrap();
12308    _ = follower.update(cx, |follower, _, cx| {
12309        assert_eq!(follower.selections.ranges(cx), vec![0..2]);
12310    });
12311
12312    // Scrolling locally breaks the follow
12313    _ = follower.update(cx, |follower, window, cx| {
12314        let top_anchor = follower.buffer().read(cx).read(cx).anchor_after(0);
12315        follower.set_scroll_anchor(
12316            ScrollAnchor {
12317                anchor: top_anchor,
12318                offset: gpui::Point::new(0.0, 0.5),
12319            },
12320            window,
12321            cx,
12322        );
12323    });
12324    assert!(!(*is_still_following.borrow()));
12325}
12326
12327#[gpui::test]
12328async fn test_following_with_multiple_excerpts(cx: &mut TestAppContext) {
12329    init_test(cx, |_| {});
12330
12331    let fs = FakeFs::new(cx.executor());
12332    let project = Project::test(fs, ["/file.rs".as_ref()], cx).await;
12333    let workspace = cx.add_window(|window, cx| Workspace::test_new(project.clone(), window, cx));
12334    let pane = workspace
12335        .update(cx, |workspace, _, _| workspace.active_pane().clone())
12336        .unwrap();
12337
12338    let cx = &mut VisualTestContext::from_window(*workspace.deref(), cx);
12339
12340    let leader = pane.update_in(cx, |_, window, cx| {
12341        let multibuffer = cx.new(|_| MultiBuffer::new(ReadWrite));
12342        cx.new(|cx| build_editor(multibuffer.clone(), window, cx))
12343    });
12344
12345    // Start following the editor when it has no excerpts.
12346    let mut state_message =
12347        leader.update_in(cx, |leader, window, cx| leader.to_state_proto(window, cx));
12348    let workspace_entity = workspace.root(cx).unwrap();
12349    let follower_1 = cx
12350        .update_window(*workspace.deref(), |_, window, cx| {
12351            Editor::from_state_proto(
12352                workspace_entity,
12353                ViewId {
12354                    creator: Default::default(),
12355                    id: 0,
12356                },
12357                &mut state_message,
12358                window,
12359                cx,
12360            )
12361        })
12362        .unwrap()
12363        .unwrap()
12364        .await
12365        .unwrap();
12366
12367    let update_message = Rc::new(RefCell::new(None));
12368    follower_1.update_in(cx, {
12369        let update = update_message.clone();
12370        |_, window, cx| {
12371            cx.subscribe_in(&leader, window, move |_, leader, event, window, cx| {
12372                leader.read(cx).add_event_to_update_proto(
12373                    event,
12374                    &mut update.borrow_mut(),
12375                    window,
12376                    cx,
12377                );
12378            })
12379            .detach();
12380        }
12381    });
12382
12383    let (buffer_1, buffer_2) = project.update(cx, |project, cx| {
12384        (
12385            project.create_local_buffer("abc\ndef\nghi\njkl\n", None, cx),
12386            project.create_local_buffer("mno\npqr\nstu\nvwx\n", None, cx),
12387        )
12388    });
12389
12390    // Insert some excerpts.
12391    leader.update(cx, |leader, cx| {
12392        leader.buffer.update(cx, |multibuffer, cx| {
12393            let excerpt_ids = multibuffer.push_excerpts(
12394                buffer_1.clone(),
12395                [
12396                    ExcerptRange::new(1..6),
12397                    ExcerptRange::new(12..15),
12398                    ExcerptRange::new(0..3),
12399                ],
12400                cx,
12401            );
12402            multibuffer.insert_excerpts_after(
12403                excerpt_ids[0],
12404                buffer_2.clone(),
12405                [ExcerptRange::new(8..12), ExcerptRange::new(0..6)],
12406                cx,
12407            );
12408        });
12409    });
12410
12411    // Apply the update of adding the excerpts.
12412    follower_1
12413        .update_in(cx, |follower, window, cx| {
12414            follower.apply_update_proto(
12415                &project,
12416                update_message.borrow().clone().unwrap(),
12417                window,
12418                cx,
12419            )
12420        })
12421        .await
12422        .unwrap();
12423    assert_eq!(
12424        follower_1.update(cx, |editor, cx| editor.text(cx)),
12425        leader.update(cx, |editor, cx| editor.text(cx))
12426    );
12427    update_message.borrow_mut().take();
12428
12429    // Start following separately after it already has excerpts.
12430    let mut state_message =
12431        leader.update_in(cx, |leader, window, cx| leader.to_state_proto(window, cx));
12432    let workspace_entity = workspace.root(cx).unwrap();
12433    let follower_2 = cx
12434        .update_window(*workspace.deref(), |_, window, cx| {
12435            Editor::from_state_proto(
12436                workspace_entity,
12437                ViewId {
12438                    creator: Default::default(),
12439                    id: 0,
12440                },
12441                &mut state_message,
12442                window,
12443                cx,
12444            )
12445        })
12446        .unwrap()
12447        .unwrap()
12448        .await
12449        .unwrap();
12450    assert_eq!(
12451        follower_2.update(cx, |editor, cx| editor.text(cx)),
12452        leader.update(cx, |editor, cx| editor.text(cx))
12453    );
12454
12455    // Remove some excerpts.
12456    leader.update(cx, |leader, cx| {
12457        leader.buffer.update(cx, |multibuffer, cx| {
12458            let excerpt_ids = multibuffer.excerpt_ids();
12459            multibuffer.remove_excerpts([excerpt_ids[1], excerpt_ids[2]], cx);
12460            multibuffer.remove_excerpts([excerpt_ids[0]], cx);
12461        });
12462    });
12463
12464    // Apply the update of removing the excerpts.
12465    follower_1
12466        .update_in(cx, |follower, window, cx| {
12467            follower.apply_update_proto(
12468                &project,
12469                update_message.borrow().clone().unwrap(),
12470                window,
12471                cx,
12472            )
12473        })
12474        .await
12475        .unwrap();
12476    follower_2
12477        .update_in(cx, |follower, window, cx| {
12478            follower.apply_update_proto(
12479                &project,
12480                update_message.borrow().clone().unwrap(),
12481                window,
12482                cx,
12483            )
12484        })
12485        .await
12486        .unwrap();
12487    update_message.borrow_mut().take();
12488    assert_eq!(
12489        follower_1.update(cx, |editor, cx| editor.text(cx)),
12490        leader.update(cx, |editor, cx| editor.text(cx))
12491    );
12492}
12493
12494#[gpui::test]
12495async fn go_to_prev_overlapping_diagnostic(executor: BackgroundExecutor, cx: &mut TestAppContext) {
12496    init_test(cx, |_| {});
12497
12498    let mut cx = EditorTestContext::new(cx).await;
12499    let lsp_store =
12500        cx.update_editor(|editor, _, cx| editor.project.as_ref().unwrap().read(cx).lsp_store());
12501
12502    cx.set_state(indoc! {"
12503        ˇfn func(abc def: i32) -> u32 {
12504        }
12505    "});
12506
12507    cx.update(|_, cx| {
12508        lsp_store.update(cx, |lsp_store, cx| {
12509            lsp_store
12510                .update_diagnostics(
12511                    LanguageServerId(0),
12512                    lsp::PublishDiagnosticsParams {
12513                        uri: lsp::Url::from_file_path(path!("/root/file")).unwrap(),
12514                        version: None,
12515                        diagnostics: vec![
12516                            lsp::Diagnostic {
12517                                range: lsp::Range::new(
12518                                    lsp::Position::new(0, 11),
12519                                    lsp::Position::new(0, 12),
12520                                ),
12521                                severity: Some(lsp::DiagnosticSeverity::ERROR),
12522                                ..Default::default()
12523                            },
12524                            lsp::Diagnostic {
12525                                range: lsp::Range::new(
12526                                    lsp::Position::new(0, 12),
12527                                    lsp::Position::new(0, 15),
12528                                ),
12529                                severity: Some(lsp::DiagnosticSeverity::ERROR),
12530                                ..Default::default()
12531                            },
12532                            lsp::Diagnostic {
12533                                range: lsp::Range::new(
12534                                    lsp::Position::new(0, 25),
12535                                    lsp::Position::new(0, 28),
12536                                ),
12537                                severity: Some(lsp::DiagnosticSeverity::ERROR),
12538                                ..Default::default()
12539                            },
12540                        ],
12541                    },
12542                    &[],
12543                    cx,
12544                )
12545                .unwrap()
12546        });
12547    });
12548
12549    executor.run_until_parked();
12550
12551    cx.update_editor(|editor, window, cx| {
12552        editor.go_to_prev_diagnostic(&GoToPreviousDiagnostic, window, cx);
12553    });
12554
12555    cx.assert_editor_state(indoc! {"
12556        fn func(abc def: i32) -> ˇu32 {
12557        }
12558    "});
12559
12560    cx.update_editor(|editor, window, cx| {
12561        editor.go_to_prev_diagnostic(&GoToPreviousDiagnostic, window, cx);
12562    });
12563
12564    cx.assert_editor_state(indoc! {"
12565        fn func(abc ˇdef: i32) -> u32 {
12566        }
12567    "});
12568
12569    cx.update_editor(|editor, window, cx| {
12570        editor.go_to_prev_diagnostic(&GoToPreviousDiagnostic, window, cx);
12571    });
12572
12573    cx.assert_editor_state(indoc! {"
12574        fn func(abcˇ def: i32) -> u32 {
12575        }
12576    "});
12577
12578    cx.update_editor(|editor, window, cx| {
12579        editor.go_to_prev_diagnostic(&GoToPreviousDiagnostic, window, cx);
12580    });
12581
12582    cx.assert_editor_state(indoc! {"
12583        fn func(abc def: i32) -> ˇu32 {
12584        }
12585    "});
12586}
12587
12588#[gpui::test]
12589async fn cycle_through_same_place_diagnostics(
12590    executor: BackgroundExecutor,
12591    cx: &mut TestAppContext,
12592) {
12593    init_test(cx, |_| {});
12594
12595    let mut cx = EditorTestContext::new(cx).await;
12596    let lsp_store =
12597        cx.update_editor(|editor, _, cx| editor.project.as_ref().unwrap().read(cx).lsp_store());
12598
12599    cx.set_state(indoc! {"
12600        ˇfn func(abc def: i32) -> u32 {
12601        }
12602    "});
12603
12604    cx.update(|_, cx| {
12605        lsp_store.update(cx, |lsp_store, cx| {
12606            lsp_store
12607                .update_diagnostics(
12608                    LanguageServerId(0),
12609                    lsp::PublishDiagnosticsParams {
12610                        uri: lsp::Url::from_file_path(path!("/root/file")).unwrap(),
12611                        version: None,
12612                        diagnostics: vec![
12613                            lsp::Diagnostic {
12614                                range: lsp::Range::new(
12615                                    lsp::Position::new(0, 11),
12616                                    lsp::Position::new(0, 12),
12617                                ),
12618                                severity: Some(lsp::DiagnosticSeverity::ERROR),
12619                                ..Default::default()
12620                            },
12621                            lsp::Diagnostic {
12622                                range: lsp::Range::new(
12623                                    lsp::Position::new(0, 12),
12624                                    lsp::Position::new(0, 15),
12625                                ),
12626                                severity: Some(lsp::DiagnosticSeverity::ERROR),
12627                                ..Default::default()
12628                            },
12629                            lsp::Diagnostic {
12630                                range: lsp::Range::new(
12631                                    lsp::Position::new(0, 12),
12632                                    lsp::Position::new(0, 15),
12633                                ),
12634                                severity: Some(lsp::DiagnosticSeverity::ERROR),
12635                                ..Default::default()
12636                            },
12637                            lsp::Diagnostic {
12638                                range: lsp::Range::new(
12639                                    lsp::Position::new(0, 25),
12640                                    lsp::Position::new(0, 28),
12641                                ),
12642                                severity: Some(lsp::DiagnosticSeverity::ERROR),
12643                                ..Default::default()
12644                            },
12645                        ],
12646                    },
12647                    &[],
12648                    cx,
12649                )
12650                .unwrap()
12651        });
12652    });
12653    executor.run_until_parked();
12654
12655    //// Backward
12656
12657    // Fourth diagnostic
12658    cx.update_editor(|editor, window, cx| {
12659        editor.go_to_prev_diagnostic(&GoToPreviousDiagnostic, window, cx);
12660    });
12661    cx.assert_editor_state(indoc! {"
12662        fn func(abc def: i32) -> ˇu32 {
12663        }
12664    "});
12665
12666    // Third diagnostic
12667    cx.update_editor(|editor, window, cx| {
12668        editor.go_to_prev_diagnostic(&GoToPreviousDiagnostic, window, cx);
12669    });
12670    cx.assert_editor_state(indoc! {"
12671        fn func(abc ˇdef: i32) -> u32 {
12672        }
12673    "});
12674
12675    // Second diagnostic, same place
12676    cx.update_editor(|editor, window, cx| {
12677        editor.go_to_prev_diagnostic(&GoToPreviousDiagnostic, window, cx);
12678    });
12679    cx.assert_editor_state(indoc! {"
12680        fn func(abc ˇdef: i32) -> u32 {
12681        }
12682    "});
12683
12684    // First diagnostic
12685    cx.update_editor(|editor, window, cx| {
12686        editor.go_to_prev_diagnostic(&GoToPreviousDiagnostic, window, cx);
12687    });
12688    cx.assert_editor_state(indoc! {"
12689        fn func(abcˇ def: i32) -> u32 {
12690        }
12691    "});
12692
12693    // Wrapped over, fourth diagnostic
12694    cx.update_editor(|editor, window, cx| {
12695        editor.go_to_prev_diagnostic(&GoToPreviousDiagnostic, window, cx);
12696    });
12697    cx.assert_editor_state(indoc! {"
12698        fn func(abc def: i32) -> ˇu32 {
12699        }
12700    "});
12701
12702    cx.update_editor(|editor, window, cx| {
12703        editor.move_to_beginning(&MoveToBeginning, window, cx);
12704    });
12705    cx.assert_editor_state(indoc! {"
12706        ˇfn func(abc def: i32) -> u32 {
12707        }
12708    "});
12709
12710    //// Forward
12711
12712    // First diagnostic
12713    cx.update_editor(|editor, window, cx| {
12714        editor.go_to_diagnostic(&GoToDiagnostic, window, cx);
12715    });
12716    cx.assert_editor_state(indoc! {"
12717        fn func(abcˇ def: i32) -> u32 {
12718        }
12719    "});
12720
12721    // Second diagnostic
12722    cx.update_editor(|editor, window, cx| {
12723        editor.go_to_diagnostic(&GoToDiagnostic, window, cx);
12724    });
12725    cx.assert_editor_state(indoc! {"
12726        fn func(abc ˇdef: i32) -> u32 {
12727        }
12728    "});
12729
12730    // Third diagnostic, same place
12731    cx.update_editor(|editor, window, cx| {
12732        editor.go_to_diagnostic(&GoToDiagnostic, window, cx);
12733    });
12734    cx.assert_editor_state(indoc! {"
12735        fn func(abc ˇdef: i32) -> u32 {
12736        }
12737    "});
12738
12739    // Fourth diagnostic
12740    cx.update_editor(|editor, window, cx| {
12741        editor.go_to_diagnostic(&GoToDiagnostic, window, cx);
12742    });
12743    cx.assert_editor_state(indoc! {"
12744        fn func(abc def: i32) -> ˇu32 {
12745        }
12746    "});
12747
12748    // Wrapped around, first diagnostic
12749    cx.update_editor(|editor, window, cx| {
12750        editor.go_to_diagnostic(&GoToDiagnostic, window, cx);
12751    });
12752    cx.assert_editor_state(indoc! {"
12753        fn func(abcˇ def: i32) -> u32 {
12754        }
12755    "});
12756}
12757
12758#[gpui::test]
12759async fn active_diagnostics_dismiss_after_invalidation(
12760    executor: BackgroundExecutor,
12761    cx: &mut TestAppContext,
12762) {
12763    init_test(cx, |_| {});
12764
12765    let mut cx = EditorTestContext::new(cx).await;
12766    let lsp_store =
12767        cx.update_editor(|editor, _, cx| editor.project.as_ref().unwrap().read(cx).lsp_store());
12768
12769    cx.set_state(indoc! {"
12770        ˇfn func(abc def: i32) -> u32 {
12771        }
12772    "});
12773
12774    let message = "Something's wrong!";
12775    cx.update(|_, cx| {
12776        lsp_store.update(cx, |lsp_store, cx| {
12777            lsp_store
12778                .update_diagnostics(
12779                    LanguageServerId(0),
12780                    lsp::PublishDiagnosticsParams {
12781                        uri: lsp::Url::from_file_path(path!("/root/file")).unwrap(),
12782                        version: None,
12783                        diagnostics: vec![lsp::Diagnostic {
12784                            range: lsp::Range::new(
12785                                lsp::Position::new(0, 11),
12786                                lsp::Position::new(0, 12),
12787                            ),
12788                            severity: Some(lsp::DiagnosticSeverity::ERROR),
12789                            message: message.to_string(),
12790                            ..Default::default()
12791                        }],
12792                    },
12793                    &[],
12794                    cx,
12795                )
12796                .unwrap()
12797        });
12798    });
12799    executor.run_until_parked();
12800
12801    cx.update_editor(|editor, window, cx| {
12802        editor.go_to_diagnostic(&GoToDiagnostic, window, cx);
12803        assert_eq!(
12804            editor
12805                .active_diagnostics
12806                .as_ref()
12807                .map(|diagnostics_group| diagnostics_group.primary_message.as_str()),
12808            Some(message),
12809            "Should have a diagnostics group activated"
12810        );
12811    });
12812    cx.assert_editor_state(indoc! {"
12813        fn func(abcˇ def: i32) -> u32 {
12814        }
12815    "});
12816
12817    cx.update(|_, cx| {
12818        lsp_store.update(cx, |lsp_store, cx| {
12819            lsp_store
12820                .update_diagnostics(
12821                    LanguageServerId(0),
12822                    lsp::PublishDiagnosticsParams {
12823                        uri: lsp::Url::from_file_path(path!("/root/file")).unwrap(),
12824                        version: None,
12825                        diagnostics: Vec::new(),
12826                    },
12827                    &[],
12828                    cx,
12829                )
12830                .unwrap()
12831        });
12832    });
12833    executor.run_until_parked();
12834    cx.update_editor(|editor, _, _| {
12835        assert_eq!(
12836            editor.active_diagnostics, None,
12837            "After no diagnostics set to the editor, no diagnostics should be active"
12838        );
12839    });
12840    cx.assert_editor_state(indoc! {"
12841        fn func(abcˇ def: i32) -> u32 {
12842        }
12843    "});
12844
12845    cx.update_editor(|editor, window, cx| {
12846        editor.go_to_diagnostic(&GoToDiagnostic, window, cx);
12847        assert_eq!(
12848            editor.active_diagnostics, None,
12849            "Should be no diagnostics to go to and activate"
12850        );
12851    });
12852    cx.assert_editor_state(indoc! {"
12853        fn func(abcˇ def: i32) -> u32 {
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-red", "bg-blue", "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
19513fn empty_range(row: usize, column: usize) -> Range<DisplayPoint> {
19514    let point = DisplayPoint::new(DisplayRow(row as u32), column as u32);
19515    point..point
19516}
19517
19518fn assert_selection_ranges(marked_text: &str, editor: &mut Editor, cx: &mut Context<Editor>) {
19519    let (text, ranges) = marked_text_ranges(marked_text, true);
19520    assert_eq!(editor.text(cx), text);
19521    assert_eq!(
19522        editor.selections.ranges(cx),
19523        ranges,
19524        "Assert selections are {}",
19525        marked_text
19526    );
19527}
19528
19529pub fn handle_signature_help_request(
19530    cx: &mut EditorLspTestContext,
19531    mocked_response: lsp::SignatureHelp,
19532) -> impl Future<Output = ()> + use<> {
19533    let mut request =
19534        cx.set_request_handler::<lsp::request::SignatureHelpRequest, _, _>(move |_, _, _| {
19535            let mocked_response = mocked_response.clone();
19536            async move { Ok(Some(mocked_response)) }
19537        });
19538
19539    async move {
19540        request.next().await;
19541    }
19542}
19543
19544/// Handle completion request passing a marked string specifying where the completion
19545/// should be triggered from using '|' character, what range should be replaced, and what completions
19546/// should be returned using '<' and '>' to delimit the range.
19547///
19548/// Also see `handle_completion_request_with_insert_and_replace`.
19549#[track_caller]
19550pub fn handle_completion_request(
19551    cx: &mut EditorLspTestContext,
19552    marked_string: &str,
19553    completions: Vec<&'static str>,
19554    counter: Arc<AtomicUsize>,
19555) -> impl Future<Output = ()> {
19556    let complete_from_marker: TextRangeMarker = '|'.into();
19557    let replace_range_marker: TextRangeMarker = ('<', '>').into();
19558    let (_, mut marked_ranges) = marked_text_ranges_by(
19559        marked_string,
19560        vec![complete_from_marker.clone(), replace_range_marker.clone()],
19561    );
19562
19563    let complete_from_position =
19564        cx.to_lsp(marked_ranges.remove(&complete_from_marker).unwrap()[0].start);
19565    let replace_range =
19566        cx.to_lsp_range(marked_ranges.remove(&replace_range_marker).unwrap()[0].clone());
19567
19568    let mut request =
19569        cx.set_request_handler::<lsp::request::Completion, _, _>(move |url, params, _| {
19570            let completions = completions.clone();
19571            counter.fetch_add(1, atomic::Ordering::Release);
19572            async move {
19573                assert_eq!(params.text_document_position.text_document.uri, url.clone());
19574                assert_eq!(
19575                    params.text_document_position.position,
19576                    complete_from_position
19577                );
19578                Ok(Some(lsp::CompletionResponse::Array(
19579                    completions
19580                        .iter()
19581                        .map(|completion_text| lsp::CompletionItem {
19582                            label: completion_text.to_string(),
19583                            text_edit: Some(lsp::CompletionTextEdit::Edit(lsp::TextEdit {
19584                                range: replace_range,
19585                                new_text: completion_text.to_string(),
19586                            })),
19587                            ..Default::default()
19588                        })
19589                        .collect(),
19590                )))
19591            }
19592        });
19593
19594    async move {
19595        request.next().await;
19596    }
19597}
19598
19599/// Similar to `handle_completion_request`, but a [`CompletionTextEdit::InsertAndReplace`] will be
19600/// given instead, which also contains an `insert` range.
19601///
19602/// This function uses the cursor position to mimic what Rust-Analyzer provides as the `insert` range,
19603/// that is, `replace_range.start..cursor_pos`.
19604pub fn handle_completion_request_with_insert_and_replace(
19605    cx: &mut EditorLspTestContext,
19606    marked_string: &str,
19607    completions: Vec<&'static str>,
19608    counter: Arc<AtomicUsize>,
19609) -> impl Future<Output = ()> {
19610    let complete_from_marker: TextRangeMarker = '|'.into();
19611    let replace_range_marker: TextRangeMarker = ('<', '>').into();
19612    let (_, mut marked_ranges) = marked_text_ranges_by(
19613        marked_string,
19614        vec![complete_from_marker.clone(), replace_range_marker.clone()],
19615    );
19616
19617    let complete_from_position =
19618        cx.to_lsp(marked_ranges.remove(&complete_from_marker).unwrap()[0].start);
19619    let replace_range =
19620        cx.to_lsp_range(marked_ranges.remove(&replace_range_marker).unwrap()[0].clone());
19621
19622    let mut request =
19623        cx.set_request_handler::<lsp::request::Completion, _, _>(move |url, params, _| {
19624            let completions = completions.clone();
19625            counter.fetch_add(1, atomic::Ordering::Release);
19626            async move {
19627                assert_eq!(params.text_document_position.text_document.uri, url.clone());
19628                assert_eq!(
19629                    params.text_document_position.position, complete_from_position,
19630                    "marker `|` position doesn't match",
19631                );
19632                Ok(Some(lsp::CompletionResponse::Array(
19633                    completions
19634                        .iter()
19635                        .map(|completion_text| lsp::CompletionItem {
19636                            label: completion_text.to_string(),
19637                            text_edit: Some(lsp::CompletionTextEdit::InsertAndReplace(
19638                                lsp::InsertReplaceEdit {
19639                                    insert: lsp::Range {
19640                                        start: replace_range.start,
19641                                        end: complete_from_position,
19642                                    },
19643                                    replace: replace_range,
19644                                    new_text: completion_text.to_string(),
19645                                },
19646                            )),
19647                            ..Default::default()
19648                        })
19649                        .collect(),
19650                )))
19651            }
19652        });
19653
19654    async move {
19655        request.next().await;
19656    }
19657}
19658
19659fn handle_resolve_completion_request(
19660    cx: &mut EditorLspTestContext,
19661    edits: Option<Vec<(&'static str, &'static str)>>,
19662) -> impl Future<Output = ()> {
19663    let edits = edits.map(|edits| {
19664        edits
19665            .iter()
19666            .map(|(marked_string, new_text)| {
19667                let (_, marked_ranges) = marked_text_ranges(marked_string, false);
19668                let replace_range = cx.to_lsp_range(marked_ranges[0].clone());
19669                lsp::TextEdit::new(replace_range, new_text.to_string())
19670            })
19671            .collect::<Vec<_>>()
19672    });
19673
19674    let mut request =
19675        cx.set_request_handler::<lsp::request::ResolveCompletionItem, _, _>(move |_, _, _| {
19676            let edits = edits.clone();
19677            async move {
19678                Ok(lsp::CompletionItem {
19679                    additional_text_edits: edits,
19680                    ..Default::default()
19681                })
19682            }
19683        });
19684
19685    async move {
19686        request.next().await;
19687    }
19688}
19689
19690pub(crate) fn update_test_language_settings(
19691    cx: &mut TestAppContext,
19692    f: impl Fn(&mut AllLanguageSettingsContent),
19693) {
19694    cx.update(|cx| {
19695        SettingsStore::update_global(cx, |store, cx| {
19696            store.update_user_settings::<AllLanguageSettings>(cx, f);
19697        });
19698    });
19699}
19700
19701pub(crate) fn update_test_project_settings(
19702    cx: &mut TestAppContext,
19703    f: impl Fn(&mut ProjectSettings),
19704) {
19705    cx.update(|cx| {
19706        SettingsStore::update_global(cx, |store, cx| {
19707            store.update_user_settings::<ProjectSettings>(cx, f);
19708        });
19709    });
19710}
19711
19712pub(crate) fn init_test(cx: &mut TestAppContext, f: fn(&mut AllLanguageSettingsContent)) {
19713    cx.update(|cx| {
19714        assets::Assets.load_test_fonts(cx);
19715        let store = SettingsStore::test(cx);
19716        cx.set_global(store);
19717        theme::init(theme::LoadThemes::JustBase, cx);
19718        release_channel::init(SemanticVersion::default(), cx);
19719        client::init_settings(cx);
19720        language::init(cx);
19721        Project::init_settings(cx);
19722        workspace::init_settings(cx);
19723        crate::init(cx);
19724    });
19725
19726    update_test_language_settings(cx, f);
19727}
19728
19729#[track_caller]
19730fn assert_hunk_revert(
19731    not_reverted_text_with_selections: &str,
19732    expected_hunk_statuses_before: Vec<DiffHunkStatusKind>,
19733    expected_reverted_text_with_selections: &str,
19734    base_text: &str,
19735    cx: &mut EditorLspTestContext,
19736) {
19737    cx.set_state(not_reverted_text_with_selections);
19738    cx.set_head_text(base_text);
19739    cx.executor().run_until_parked();
19740
19741    let actual_hunk_statuses_before = cx.update_editor(|editor, window, cx| {
19742        let snapshot = editor.snapshot(window, cx);
19743        let reverted_hunk_statuses = snapshot
19744            .buffer_snapshot
19745            .diff_hunks_in_range(0..snapshot.buffer_snapshot.len())
19746            .map(|hunk| hunk.status().kind)
19747            .collect::<Vec<_>>();
19748
19749        editor.git_restore(&Default::default(), window, cx);
19750        reverted_hunk_statuses
19751    });
19752    cx.executor().run_until_parked();
19753    cx.assert_editor_state(expected_reverted_text_with_selections);
19754    assert_eq!(actual_hunk_statuses_before, expected_hunk_statuses_before);
19755}