tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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outline.html (749B)

      1 <!DOCTYPE html>
      2 <title>Layout Instability: outline doesn't contribute to layout shift</title>
      3 <link rel="help" href="https://wicg.github.io/layout-instability/" />
      4 <script src="/resources/testharness.js"></script>
      5 <script src="/resources/testharnessreport.js"></script>
      6 <script src="resources/util.js"></script>
      7 <div id="target" style="width: 300px; height: 300px; background: blue"></div>
      8 <script>
      9 promise_test(async () => {
     10  const watcher = new ScoreWatcher;
     11 
     12  // Wait for the initial render to complete.
     13  await waitForAnimationFrames(2);
     14 
     15  // Add outline for target. This should not generate a shift.
     16  target.style.outline = "10px solid blue";
     17 
     18  await waitForAnimationFrames(3);
     19  assert_equals(watcher.score, 0);
     20 }, "Outline.");
     21 </script>