background-color-transition-currentcolor.html

<!DOCTYPE html>
<html class="reftest-wait">
<link rel="help" href="https://drafts.csswg.org/css-backgrounds-3/#background-color">
<link rel="match" href="background-color-transition-currentcolor-ref.html">
<style>
  body {
    padding:  0;
    margin:  0;
  }
  .block {
    width:  100px;
    height:  100px;
    padding:  0;
    display:  inline-block;
    background:  rgb(0, 254, 0);
    color:  black;
    margin:  10px;
    /* Use a long transition that can be stalled at the midpoint. */
    transition:  background 100000s cubic-bezier(0,1,1,0);
  }
  .block.tweak {
    background:  currentColor;
  }
</style>
<body>
  <div class="block"></div>
</body>
<script src="/common/reftest-wait.js"></script>
<script>
  window.onload = () => {
    requestAnimationFrame(() => {
      requestAnimationFrame(() => {
        document.querySelector('.block').classList.add('tweak');
        const anim = document.getAnimations()[0];
        anim.ready.then(() => {
          anim.currentTime = anim.effect.getTiming().duration/2;
          requestAnimationFrame(() => {
            takeScreenshot();
          });
        });
      });
    });
  };
</script>
</html>

chromium/third_party/blink/web_tests/external/wpt/css/css-backgrounds/animations/background-color-transition-currentcolor.html