1use editor::Bias;
 2use gpui::{action, keymap::Binding, MutableAppContext, ViewContext};
 3use language::SelectionGoal;
 4use workspace::Workspace;
 5
 6use crate::{mode::Mode, SwitchMode, VimState};
 7
 8action!(NormalBefore);
 9
10pub fn init(cx: &mut MutableAppContext) {
11    let context = Some("Editor && vim_mode == insert");
12    cx.add_bindings(vec![
13        Binding::new("escape", NormalBefore, context),
14        Binding::new("ctrl-c", NormalBefore, context),
15    ]);
16
17    cx.add_action(normal_before);
18}
19
20fn normal_before(_: &mut Workspace, _: &NormalBefore, cx: &mut ViewContext<Workspace>) {
21    VimState::update_global(cx, |state, cx| {
22        state.update_active_editor(cx, |editor, cx| {
23            editor.move_cursors(cx, |map, mut cursor, _| {
24                *cursor.column_mut() = cursor.column().saturating_sub(1);
25                (map.clip_point(cursor, Bias::Left), SelectionGoal::None)
26            });
27        });
28        state.switch_mode(&SwitchMode(Mode::normal()), cx);
29    })
30}
31
32#[cfg(test)]
33mod test {
34    use crate::{mode::Mode, vim_test_context::VimTestContext};
35
36    #[gpui::test]
37    async fn test_enter_and_exit_insert_mode(cx: &mut gpui::TestAppContext) {
38        let mut cx = VimTestContext::new(cx, true, "").await;
39        cx.simulate_keystroke("i");
40        assert_eq!(cx.mode(), Mode::Insert);
41        cx.simulate_keystrokes(&["T", "e", "s", "t"]);
42        cx.assert_editor_state("Test|");
43        cx.simulate_keystroke("escape");
44        assert_eq!(cx.mode(), Mode::normal());
45        cx.assert_editor_state("Tes|t");
46    }
47}