content-visibility-with-top-layer-in-auto-subtree-removal.html

<!doctype html>
<html class="reftest-wait">
<meta charset="utf8">
<title>CSS Content Visibility: test top layer dialog removal in on-screen c-v:auto subtree</title>
<link rel="author" title="Rob Buis" href="mailto:[email protected]">
<link rel="help" href="https://drafts.csswg.org/css-contain/#content-visibility">
<link rel="match" href="container-with-child-ref.html">
<meta name="assert" content="test top layer dialog removal in on-screen c-v:auto subtree">

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

<style>
#container {
  width: 150px;
  height: 150px;
  background: lightblue;
  content-visibility: auto;
}
#child {
  width: 50px;
  height: 50px;
  background: green;
}
</style>

<div id=container>
Test passes if you can see this text and a green box.
<div id=child></div>
<dialog id=dialog >FAIL<div id=inner></div></dialog>
</div>

<script>
function runTest() {
  dialog.showModal();
  inner.getBoundingClientRect();

  dialog.close();

  takeScreenshot();
}

onload = () => requestAnimationFrame(() => requestAnimationFrame(runTest));
</script>

chromium/third_party/blink/web_tests/external/wpt/css/css-contain/content-visibility/content-visibility-with-top-layer-in-auto-subtree-removal.html