view-transition-name-removed-mid-transition.html

<!DOCTYPE html>
<html class=reftest-wait>
<title>View transitions: view-transition-name removed mid transition</title>
<link rel="help" href="https://drafts.csswg.org/css-view-transitions-1/">
<link rel="author" href="mailto:[email protected]">
<link rel="match" href="view-transition-name-removed-mid-transition-ref.html">

<script src="/common/reftest-wait.js"></script>
<style>
.target {
  view-transition-name:foo;
}

.foo {
  position: fixed;
  left: 0;
  top: 0;
  background: red;
  width: 100px;
  height: 100px;
  z-index: 1000;
}

.bar {
  position: fixed;
  left: 50px;
  top: 50px;
  background: green;
  width: 100px;
  height: 100px;
}
</style>

<div class="target" id="target">
  <div class="foo"></div>
</div>
<div class="bar"></div>

<script>
failIfNot(document.startViewTransition, "Missing document.startViewTransition");

async function runTest() {
  let transition = document.startViewTransition();
  await transition.ready;
  target.style.viewTransitionName = "none";
  await transition.finished;
  takeScreenshot();
}
onload = () => requestAnimationFrame(() => requestAnimationFrame(runTest));
</script>

chromium/third_party/blink/web_tests/external/wpt/css/css-view-transitions/view-transition-name-removed-mid-transition.html