Use NoopTextSystem during tests (#28607)

This should allow tests to be more similar across platforms.

Release Notes:

- N/A

crates/editor/src/display_map.rs

@@ -1742,7 +1742,6 @@ pub mod tests {
         }
     }
 
-    #[cfg(target_os = "macos")]
     #[gpui::test(retries = 5)]
     async fn test_soft_wraps(cx: &mut gpui::TestAppContext) {
         cx.background_executor
@@ -1760,7 +1759,7 @@ pub mod tests {
                 editor.update(cx, |editor, _cx| editor.text_layout_details(window));
 
             let font_size = px(12.0);
-            let wrap_width = Some(px(64.));
+            let wrap_width = Some(px(96.));
 
             let text = "one two three four five\nsix seven eight";
             let buffer = MultiBuffer::build_simple(text, cx);
@@ -2411,8 +2410,6 @@ pub mod tests {
         }
     }
 
-    // todo(linux) fails due to pixel differences in text rendering
-    #[cfg(target_os = "macos")]
     #[gpui::test]
     async fn test_chunks_with_soft_wrapping(cx: &mut gpui::TestAppContext) {
         cx.background_executor

crates/editor/src/display_map/block_map.rs

@@ -2277,7 +2277,6 @@ mod tests {
         }
     }
 
-    #[cfg(target_os = "macos")]
     #[gpui::test]
     fn test_blocks_on_wrapped_lines(cx: &mut gpui::TestAppContext) {
         cx.update(init_test);
@@ -2292,7 +2291,7 @@ mod tests {
         let (_, fold_snapshot) = FoldMap::new(inlay_snapshot);
         let (_, tab_snapshot) = TabMap::new(fold_snapshot, 4.try_into().unwrap());
         let (_, wraps_snapshot) = cx.update(|cx| {
-            WrapMap::new(tab_snapshot, font("Helvetica"), px(14.0), Some(px(60.)), cx)
+            WrapMap::new(tab_snapshot, font("Helvetica"), px(14.0), Some(px(90.)), cx)
         });
         let mut block_map = BlockMap::new(wraps_snapshot.clone(), 1, 1);
 

crates/editor/src/editor_tests.rs

@@ -1316,8 +1316,6 @@ fn test_move_cursor(cx: &mut TestAppContext) {
     });
 }
 
-// TODO: Re-enable this test
-#[cfg(target_os = "macos")]
 #[gpui::test]
 fn test_move_cursor_multibyte(cx: &mut TestAppContext) {
     init_test(cx, |_| {});

crates/editor/src/element.rs

@@ -6638,7 +6638,7 @@ impl Element for EditorElement {
                                 }
                             };
 
-                            if editor.set_wrap_width(wrap_width, cx) {
+                            if editor.set_wrap_width(wrap_width.map(|w| w.ceil()), cx) {
                                 editor.snapshot(window, cx)
                             } else {
                                 snapshot