1use crate::{mode::Mode, SwitchMode, VimState};
 2use editor::Bias;
 3use gpui::{actions, keymap::Binding, MutableAppContext, ViewContext};
 4use language::SelectionGoal;
 5use workspace::Workspace;
 6
 7actions!(vim, [NormalBefore]);
 8
 9pub fn init(cx: &mut MutableAppContext) {
10    let context = Some("Editor && vim_mode == insert");
11    cx.add_bindings(vec![
12        Binding::new("escape", NormalBefore, context),
13        Binding::new("ctrl-c", NormalBefore, context),
14    ]);
15
16    cx.add_action(normal_before);
17}
18
19fn normal_before(_: &mut Workspace, _: &NormalBefore, cx: &mut ViewContext<Workspace>) {
20    VimState::update_global(cx, |state, cx| {
21        state.update_active_editor(cx, |editor, cx| {
22            editor.move_cursors(cx, |map, mut cursor, _| {
23                *cursor.column_mut() = cursor.column().saturating_sub(1);
24                (map.clip_point(cursor, Bias::Left), SelectionGoal::None)
25            });
26        });
27        state.switch_mode(&SwitchMode(Mode::normal()), cx);
28    })
29}
30
31#[cfg(test)]
32mod test {
33    use crate::{mode::Mode, vim_test_context::VimTestContext};
34
35    #[gpui::test]
36    async fn test_enter_and_exit_insert_mode(cx: &mut gpui::TestAppContext) {
37        let mut cx = VimTestContext::new(cx, true, "").await;
38        cx.simulate_keystroke("i");
39        assert_eq!(cx.mode(), Mode::Insert);
40        cx.simulate_keystrokes(&["T", "e", "s", "t"]);
41        cx.assert_editor_state("Test|");
42        cx.simulate_keystroke("escape");
43        assert_eq!(cx.mode(), Mode::normal());
44        cx.assert_editor_state("Tes|t");
45    }
46}