chromium/third_party/blink/web_tests/external/wpt/css/selectors/invalidation/has-pseudo-element.html

<!DOCTYPE html>
<html class="reftest-wait">
<title>CSS Selector Invalidation: :has() besides a pseudoelement</title>
<link rel="author" title="David Shin" href="mailto:[email protected]">
<link rel="help" href="https://drafts.csswg.org/selectors/#relational">
<link rel="match" href="../../reference/ref-filled-green-100px-square.xht">
<style>
.anchor:has(.foo)::before {
  content: "";
  display: block;
  width: 100px;
  height: 100px;
  background: green;
  position: absolute;
}
</style>
<script>
function go() {
  dut.classList.add("foo");
  document.documentElement.classList.remove("reftest-wait");
}
</script>
<body onload="go()">
<p>Test passes if there is a filled green square and <strong>no red</strong>.</p>
<div class="anchor">
<div id="dut"></div>
<div style="width: 100px; height: 100px; background: red;"></div>
</div>
</body>
</html>