sample-on-last-keyframe.html | Explore in Territory

<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <title>Sample on last keyframe</title>
  <link rel="help" href="https://www.w3.org/TR/css-animations-1/#animation-direction">
  <style type="text/css" media="screen">
    #test {
      animation:  test 1s reverse paused;
    }
    @keyframes test {
      from { opacity: 0; }
      to { opacity: 0.5; }
    }
  </style>
</head>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/web-animations/testcommon.js"></script>
<body>
<div id="log"></div>
<script>
'use strict';

promise_test(async t => {
  const div = createDiv(t);
  div.id = 'test';
  const anim = div.getAnimations()[0];
  await anim.ready;
  const opacity = parseFloat(getComputedStyle(div).opacity);
  assert_equals(opacity, 0.5);
}, 'Opacity at start of reverse running animation');

</script>
</body>
</html>

chromium/third_party/blink/web_tests/external/wpt/css/css-animations/sample-on-last-keyframe.html