layout-instability/shift-invisible.html

<!DOCTYPE html>
<title>Layout Instability: shift of invisible element not counted</title>
<link rel="help" href="https://wicg.github.io/layout-instability/" />
<div id="target" style="width: 100px; height: 100px; position: relative"></div>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="resources/util.js"></script>
<script>

promise_test(async () => {
  const watcher = new ScoreWatcher;

  // Wait for the initial render to complete.
  await waitForAnimationFrames(2);

  target.style.top = "200px";

  await waitForAnimationFrames(3);
  assert_equals(watcher.score, 0);
}, "Shift of invisible element not counted.");

</script>