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