1use crate::{state::Mode, Vim};
 2use editor::{scroll::autoscroll::Autoscroll, Bias};
 3use gpui::{actions, AppContext, ViewContext};
 4use language::SelectionGoal;
 5use workspace::Workspace;
 6
 7actions!(vim, [NormalBefore]);
 8
 9pub fn init(cx: &mut AppContext) {
10    cx.add_action(normal_before);
11}
12
13fn normal_before(_: &mut Workspace, _: &NormalBefore, cx: &mut ViewContext<Workspace>) {
14    Vim::update(cx, |state, cx| {
15        state.update_active_editor(cx, |editor, cx| {
16            editor.change_selections(Some(Autoscroll::fit()), cx, |s| {
17                s.move_cursors_with(|map, mut cursor, _| {
18                    *cursor.column_mut() = cursor.column().saturating_sub(1);
19                    (map.clip_point(cursor, Bias::Left), SelectionGoal::None)
20                });
21            });
22        });
23        state.switch_mode(Mode::Normal, false, cx);
24    })
25}
26
27#[cfg(test)]
28mod test {
29    use crate::{state::Mode, test::VimTestContext};
30
31    #[gpui::test]
32    async fn test_enter_and_exit_insert_mode(cx: &mut gpui::TestAppContext) {
33        let mut cx = VimTestContext::new(cx, true).await;
34        cx.simulate_keystroke("i");
35        assert_eq!(cx.mode(), Mode::Insert);
36        cx.simulate_keystrokes(["T", "e", "s", "t"]);
37        cx.assert_editor_state("Testˇ");
38        cx.simulate_keystroke("escape");
39        assert_eq!(cx.mode(), Mode::Normal);
40        cx.assert_editor_state("Tesˇt");
41    }
42}