some improvements

test/editor-modes.test.tsx

@@ -74,7 +74,7 @@ describe('Editor view modes', () => {
     expect(find(c, '.seg button.on', 'Original')).toBeTruthy()
   })
 
-  it('hovering a band in Actual reveals the original, leaving the editor hides it', async () => {
+  it('clicking a band in Actual reveals the original, clicking it again hides it', async () => {
     const c = await openChanged()
     const scroll = await waitFor(() => {
       const el = c.querySelector<HTMLElement>('.ce-scroll')
@@ -83,7 +83,7 @@ describe('Editor view modes', () => {
     })
     // Line 30 is the first rewritten line. Unwrapped, its band is arithmetic:
     // a 10px top pad plus 20px per line, and the hit test reads clientY.
-    fireEvent.mouseMove(scroll, { clientY: 10 + 29 * 20 + 5 })
+    fireEvent.click(scroll, { clientY: 10 + 29 * 20 + 5 })
     const peek = await waitFor(() => {
       const p = c.querySelector<HTMLElement>('.peek')
       if (!p) throw new Error('peek not ready')
@@ -93,7 +93,8 @@ describe('Editor view modes', () => {
     expect(removed).toHaveLength(1)
     expect(removed[0].textContent).toContain("'plan'     => $user->plan,")
 
-    fireEvent.mouseLeave(scroll)
+    // A second click on the same band drops it.
+    fireEvent.click(scroll, { clientY: 10 + 29 * 20 + 5 })
     await waitFor(() => expect(c.querySelector('.peek')).toBeNull())
   })