web-animations-api-parse-pseudo-argument.html

<!DOCTYPE html>
<html class=reftest-wait>
<title>View transitions with web-animation API: full parsing of argument</title>
<link rel="help" href="https://www.w3.org/TR/css-view-transitions-1/">
<link rel="match" href="web-animations-api-ref.html">
<meta name="fuzzy" content="maxDifference=0-2; totalPixels=0-500">
<meta name="variant" content="?first-pseudo=::view-transition-group( first)">
<meta name="variant" content="?first-pseudo=::view-transition-group(first)">
<meta name="variant" content="?first-pseudo=::view-transition-group( first">
<meta name="variant" content="?first-pseudo=::view-transition-group(      first )">
<meta name="variant" content="?first-pseudo=::view-transition-group(first )">
<meta name="variant" content="?first-pseudo=::view-transition-group(first">
<script src="/common/reftest-wait.js">
</script>
<style>
  #first {
    background: blue;
    width: 100px;
    height: 100px;
    contain: paint;
  }

  #second {
    background: green;
    width: 100px;
    height: 100px;
    contain: paint;
  }

  /* Unset all animations since the test drives it using WA-API */
  html::view-transition-group(*),
  html::view-transition-image-pair(*),
  html::view-transition-new(*),
  html::view-transition-old(*) {
    animation: unset;
  }

  html::view-transition-group(root) {
    opacity: 0;
  }
</style>
<div id=first></div>
<div id=second></div>
<script>
  failIfNot(document.startViewTransition, "Missing document.startViewTransition");
  const firstPseudo = new URL(location.href).searchParams.get("first-pseudo") ?? "::view-transition-group(first)";

  function setAnimation() {
    document.documentElement.animate({ transform: ['translate(100px)', 'translate(100px)'] }, { duration: 10000, pseudoElement: firstPseudo });
    document.documentElement.animate({ transform: ['translate(150px)', 'translate(150px)'] }, { duration: 10000, pseudoElement: '::view-transition-group(second)' });
    requestAnimationFrame(takeScreenshot);
  }

  async function runTest() {
    first.style.viewTransitionName = "first";
    document.startViewTransition(() => {
      first.style.viewTransitionName = "";
      second.style.viewTransitionName = "second";
      requestAnimationFrame(setAnimation);
    });
  }
  onload = () => requestAnimationFrame(() => requestAnimationFrame(runTest));
</script>
chromium/third_party/blink/web_tests/external/wpt/css/css-view-transitions/web-animations-api-parse-pseudo-argument.html
