chromium/third_party/blink/web_tests/external/wpt/fenced-frame/sandboxed-features-alert.https.html

<!DOCTYPE html>
<title>Test of sandboxed features - alert</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/common/utils.js"></script>
<script src="resources/utils.js"></script>
<script src="resources/sandboxed-features.js"></script>

<body>
<script>
run_sanboxed_feature_test('test_alert',
  'The fenced frame must fail to open an alert dialog.');
</script>
</body>