A mouse drag on the feed selects text again instead of grabbing and flicking the page.

Co-Authored-By: Claude Opus 5.5 <[email protected]>
Claude-Session: https://claude.ai/code/session_013ZDf1cyCQLkfjftYhymZAg

1 files changed, 7 insertions, 41 deletions

diff --git a/tools/feed-momentum-test.js b/tools/feed-momentum-test.js
index 29e4934..3debd8a 100644
--- a/tools/feed-momentum-test.js
+++ b/tools/feed-momentum-test.js
@@ -1,8 +1,7 @@
 // Desktop feed scrolling feels like a phone: a mouse-wheel notch coasts
 // farther than the browser's own step, quick notches stack, a reverse turn
 // brakes; a trackpad's smooth deltas are left to the browser; a mouse drag
-// scrolls and a release while moving throws it; a drag that moved doesn't
-// click; a sideways drag is left alone (text selection).
+// selects text, as on any page.
 // Uses a tall stand-in feed so no relays are needed.
 // Run: bun tools/feed-momentum-test.js
 import puppeteer from './puppeteer.js';
@@ -76,50 +75,17 @@ try {
   check('...and a notch right after them too (still a trackpad)', !(await notch(1)));
   await sleep(500);
 
-  console.log('[grab and flick]');
+  console.log('[a mouse drag selects text]');
   await top();
+  const b = await (await page.$('#tgt')).boundingBox();
+  await page.evaluate(() => { window.__clicks = 0; getSelection().removeAllRanges(); });
   await page.mouse.move(300, 700); await page.mouse.down();
   for (let i = 1; i <= 10; i++) { await page.mouse.move(300, 700 - i * 40); await sleep(8); }
-  const during = await y();
   await page.mouse.up();
-  check('dragging up scrolls with the mouse', during >= 380 && during <= 420, during + 'px');
-  const flung = await settle();
-  check('letting go while moving throws it', flung > during + 400, flung + 'px');
-  await top();
-  await page.mouse.move(300, 700); await page.mouse.down();
-  for (let i = 1; i <= 10; i++) { await page.mouse.move(300, 700 - i * 30); await sleep(8); }
-  await sleep(250); // hold still
-  const held = await y();
-  await page.mouse.up();
-  check('held still before letting go: it stays put', (await settle()) - held < 5, held + ' → ' + await y());
-  await top();
-  const b = await (await page.$('#tgt')).boundingBox();
-  await page.evaluate(() => { window.__clicks = 0; });
-  await page.mouse.move(b.x + 50, b.y + 150); await page.mouse.down();
-  for (let i = 1; i <= 6; i++) await page.mouse.move(b.x + 50, b.y + 150 - i * 15);
-  await page.mouse.up(); await sleep(50);
-  check('a drag that started on a button doesn\'t click it', await page.evaluate(() => window.__clicks) === 0);
-  // a hand's flick often starts a little sideways
-  await top();
-  await page.mouse.move(b.x + 50, b.y + 150); await page.mouse.down();
-  await page.mouse.move(b.x + 58, b.y + 145);
-  for (let i = 1; i <= 6; i++) await page.mouse.move(b.x + 60, b.y + 145 - i * 15);
-  await page.mouse.up(); await sleep(50);
-  check('a flick that starts a bit sideways still scrolls', (await settle()) > 50, await y() + 'px');
-  check('...and doesn\'t click', await page.evaluate(() => window.__clicks) === 0);
-  await top();
-  await page.mouse.move(b.x + 20, b.y + 150); await page.mouse.down();
-  for (let i = 1; i <= 8; i++) await page.mouse.move(b.x + 20 + i * 30, b.y + 152);
-  await page.mouse.up(); await sleep(50);
-  check('a sideways drag (selecting) doesn\'t click either', await page.evaluate(() => window.__clicks) === 0);
-  await sleep(350);
+  check('dragging up doesn\'t scroll the feed', (await settle()) === 0, await y() + 'px');
+  check('...it selects text', await page.evaluate(() => getSelection().toString().length > 0));
   await page.click('#tgt'); await sleep(50);
-  check('...but a plain click still does', await page.evaluate(() => window.__clicks) === 1);
-  await top();
-  await page.mouse.move(100, 500); await page.mouse.down();
-  for (let i = 1; i <= 10; i++) await page.mouse.move(100 + i * 30, 505);
-  await page.mouse.up();
-  check('a sideways drag doesn\'t scroll (it selects text)', (await settle()) === 0);
+  check('a plain click still clicks', await page.evaluate(() => window.__clicks) === 1);
   check('no page errors', errs.length === 0, errs.join('; ').slice(0, 300));
 } catch (e) { console.error(e); ok = false; } finally { await browser.close(); server.stop(); }
 console.log(ok ? 'PASS' : 'FAIL');