chromium/third_party/blink/web_tests/external/wpt/css/css-masking/clip-path/clip-path-transform-mutated-002.html

<!DOCTYPE html>
<html class="reftest-wait">
<title>CSS Masking: Mutating a &lt;clipPath&gt;s 'transform' updates the clip path</title>
<link rel="author" title="Fredrik Söderquist" href="mailto:[email protected]">
<link rel="help" href="https://drafts.fxtf.org/css-masking-1/#the-clip-path"">
<link rel="help" href="https://crbug.com/881700">
<link rel="match" href="reference/clip-path-transform-mutated-002-ref.html">
<meta name="assert" content="Check that clipPath's clients should be notified when the 'transform' presentation attribute (or CSS property) was mutated on a <clipPath>."/>

<script src="/common/reftest-wait.js"></script>
<script src="/common/rendering-utils.js"></script>

<style>
#target {
  width: 100px;
  height: 100px;
  background-color: green;
  clip-path: url(#clip);
}
</style>
<div id="target"></div>
<svg>
  <clipPath id="clip">
    <rect width="1" height="1"/>
  </clipPath>
</svg>
<script>
  waitForAtLeastOneFrame().then(function() {
    clip.setAttribute('transform', 'scale(100 100)');
    takeScreenshot();
  });
</script>