Function test_undo_different_kinds_not_grouped

src/text_input.rs:3667–3684

()

    #[test]
    fn test_undo_different_kinds_not_grouped() {
        let mut state = TextEditState::default();

        // Type then delete — different kinds, not grouped
        state.push_undo(UndoActionKind::InsertChar);
        state.insert_text("abc", None);
        state.push_undo(UndoActionKind::Backspace);
        state.backspace();
        assert_eq!(state.text, "ab");

        // First undo restores before backspace
        assert!(state.undo());
        assert_eq!(state.text, "abc");

        // Second undo restores before insert
        assert!(state.undo());
        assert_eq!(state.text, "");
    }

    #[test]
    fn test_redo_cleared_on_new_edit() {