From 172c4f85c0707a30927f9568cf05f808443a173c Mon Sep 17 00:00:00 2001
From: "astracat-bot[bot]"
 <323722387+astracat-bot[bot]@users.noreply.github.com>
Date: Mon, 9 Nov 2026 17:15:19 +0000
Subject: [PATCH] test(BottomSheet): timestamp the reduced-motion mouse close
 (#10756)

Co-authored-by: astracat-bot[bot] <323722387+astracat-bot[bot]@users.noreply.github.com>
---
 .../BottomSheetRelease.a11y.chromium.spec.ts       | 14 ++++++--------
 1 file changed, 6 insertions(+), 8 deletions(-)

diff --git a/packages/core/src/BottomSheet/__tests__/BottomSheetRelease.a11y.chromium.spec.ts b/packages/core/src/BottomSheet/__tests__/BottomSheetRelease.a11y.chromium.spec.ts
index 39966c257d568..9668e090bc965 100644
--- a/packages/core/src/BottomSheet/__tests__/BottomSheetRelease.a11y.chromium.spec.ts
+++ b/packages/core/src/BottomSheet/__tests__/BottomSheetRelease.a11y.chromium.spec.ts
@@ -3,8 +3,8 @@
 
 /**
  * @file BottomSheetRelease.a11y.chromium.spec.ts
- * @input Built BottomSheet stories and real Chromium touch input (CDP), each
- *   event with its own timestamp
+ * @input Built BottomSheet stories and real Chromium touch and mouse input
+ *   (CDP), each event with its own timestamp
  * @output Browser evidence for the touch release: a fast short flick closes
  *   a sheet at its lowest detent, and its exit starts at the flick's speed.
  *   From the top snap point, a flick whose projection stops short of the
@@ -323,12 +323,10 @@ test('a mouse close under reduced motion moves the sheet no further', async ({
     };
     requestAnimationFrame(record);
   });
-  const x = rest.x + rest.width / 2;
-  const y = rest.y + 12;
-  await page.mouse.move(x, y);
-  await page.mouse.down();
-  await page.mouse.move(x, y + 150, {steps: 5});
-  await page.mouse.up();
+  const cdp = await page.context().newCDPSession(page);
+  // 150 px in 50 ms is 3,000 px/s, so the mouse release projects past the
+  // dismiss line even when event delivery is slow.
+  await mouseDrag(cdp, sheet, 150, 50);
   // While the dialog closes, no drag exit plays: no inline transition and no
   // animation moves the sheet.
   const exitPlayed = await page.evaluate(async () => {