chromium/third_party/blink/web_tests/external/wpt/css/css-masking/clip-path/animations/two-clip-path-animation-diff-length4.html

<!DOCTYPE html>
<html class="reftest-wait">
<link rel="help" href="https://drafts.csswg.org/css-shapes-1/#basic-shape-interpolation">
<link rel="match" href="two-clip-path-animation-diff-length1-ref.html">
<style>
  #container {
    width: 100px;
    height: 100px;
    background-color: green;
    animation: clippath2 0.5s;
  }

  @keyframes clippath2 {
    0% {
      clip-path: inset(10px 10px);
    }

    1% {
      clip-path: inset(10px 10px);
    }

    100% {
      clip-path: inset(40px 40px);
    }
  }
</style>
<script src="/common/reftest-wait.js"></script>
<script src="../../../../web-animations/testcommon.js"></script>
<script src="../../../../web-animations/resources/timing-utils.js"></script>

<body>
  <div id="container"></div>

  <script>
    // This test ensures that a new no-op animation still invalidates paint
    // and the animation running on the compositor.
    document.getAnimations()[0].ready.then(() => {
      let anim = document.getElementById("container").animate(
        [
          { clipPath: "inset(10px 10px)" },
          { clipPath: "inset(10px 10px)" },
        ],
        2000,
      );
      anim.ready.then(() => { return requestAnimationFrame(takeScreenshot); });
    });
  </script>
</body>

</html>