documents: undo and redo leave a block only past its own history; typing lands after undo empties the document

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>

src/documents/document/tests/mod.rs

@@ -22,7 +22,7 @@ pub(super) fn open<'a>(
 }
 
 /// Presses block `ix` where it is drawn.
-fn press(ix: usize, modifiers: Modifiers, cx: &mut VisualTestContext) {
+pub(super) fn press(ix: usize, modifiers: Modifiers, cx: &mut VisualTestContext) {
     let bounds = cx
         .debug_bounds(Box::leak(format!("markdown-block-{ix}").into_boxed_str()))
         .expect("the block is drawn");
@@ -365,6 +365,7 @@ fn a_press_after_a_write_back_waits_for_the_long_read(cx: &mut TestAppContext) {
     assert_eq!(opened(&document, cx), "B", "once read, B opens whole");
 }
 
+mod history;
 mod place;
 
 #[gpui::test]
@@ -397,78 +398,3 @@ fn a_text_past_the_largest_read_is_never_read(cx: &mut TestAppContext) {
     });
     assert_eq!((blocks, outline), (0, 0), "the old read is gone");
 }
-
-/// Focus on `document`'s own handle, as an owner gives it.
-fn focus(document: &Entity<MarkdownDocument>, cx: &mut VisualTestContext) {
-    let handle = document.read_with(cx, |document, cx| {
-        gpui::Focusable::focus_handle(document, cx)
-    });
-    cx.update(|window, cx| window.focus(&handle, cx));
-    cx.run_until_parked();
-}
-
-#[gpui::test]
-fn an_empty_visual_document_takes_typing_on_focus(cx: &mut TestAppContext) {
-    let (document, cx) = open("", MarkdownMode::Visual, cx);
-    focus(&document, cx);
-    cx.simulate_input("Hi");
-    assert_eq!(text(&document, cx), "Hi", "typing lands with no press");
-    cx.simulate_keystrokes("escape");
-    cx.run_until_parked();
-    assert_eq!(text(&document, cx), "Hi", "escape keeps it");
-}
-
-#[gpui::test]
-fn focus_opens_no_block_in_a_written_document(cx: &mut TestAppContext) {
-    let (document, cx) = open(TEXT, MarkdownMode::Visual, cx);
-    focus(&document, cx);
-    cx.simulate_input("x");
-    assert_eq!(text(&document, cx), TEXT);
-}
-
-fn mode(document: &Entity<MarkdownDocument>, mode: MarkdownMode, cx: &mut VisualTestContext) {
-    document.update_in(cx, |document, window, cx| {
-        document.set_mode(mode, window, cx)
-    });
-    cx.run_until_parked();
-}
-
-#[gpui::test]
-fn preview_and_back_still_take_typing_in_an_empty_document(cx: &mut TestAppContext) {
-    let (document, cx) = open("", MarkdownMode::Visual, cx);
-    focus(&document, cx);
-    cx.simulate_keystrokes("escape");
-    mode(&document, MarkdownMode::Preview, cx);
-    mode(&document, MarkdownMode::Visual, cx);
-    cx.simulate_input("Hi");
-    assert_eq!(text(&document, cx), "Hi");
-}
-
-#[gpui::test]
-fn undo_in_an_untouched_block_steps_the_document(cx: &mut TestAppContext) {
-    let (document, cx) = open("Seed", MarkdownMode::Source, cx);
-    document.update(cx, |document, cx| document.set_text("", cx));
-    mode(&document, MarkdownMode::Visual, cx);
-    cx.simulate_keystrokes("secondary-z");
-    cx.run_until_parked();
-    assert_eq!(text(&document, cx), "Seed", "the source edit is undone");
-    cx.simulate_keystrokes("secondary-shift-z");
-    cx.run_until_parked();
-    assert_eq!(text(&document, cx), "", "and redone");
-}
-
-#[gpui::test]
-fn undo_in_a_typed_block_stays_in_the_block(cx: &mut TestAppContext) {
-    let (document, cx) = open("Seed", MarkdownMode::Source, cx);
-    document.update(cx, |document, cx| document.set_text(TEXT, cx));
-    mode(&document, MarkdownMode::Visual, cx);
-    press(1, Modifiers::none(), cx);
-    cx.simulate_input(" x");
-    cx.simulate_keystrokes("secondary-z");
-    cx.run_until_parked();
-    assert_eq!(
-        text(&document, cx),
-        TEXT,
-        "the typing went, not the edit before"
-    );
-}