chromium/third_party/blink/web_tests/external/wpt/fenced-frame/default-enabled-features-subframe.https.html

<!DOCTYPE html>
<title>Test nested iframes inheriting permissions from fenced frames</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/common/utils.js"></script>
<script src="/common/dispatcher/dispatcher.js"></script>
<script src="resources/utils.js"></script>
<script src="/common/get-host-info.sub.js"></script>

<body>
<script>
promise_test(async(t) => {
  const key = token();

  const urn = await runSelectURL(
      'resources/default-enabled-features-subframe-fencedframe.https.html',
      [key, /*should_restrict_select_url=*/false]);
  const fencedframe = await attachFencedFrame(urn);

  const result = await nextValueFromServer(key);
  const [allows_shared_storage, allows_select_url] = result.split(",");

  assert_equals(allows_shared_storage, "false");
  assert_equals(allows_select_url, "true");
}, 'Iframes nested in fenced frames inherit the fenced frame policies');

promise_test(async(t) => {
  const key = token();

  const urn = await runSelectURL(
      'resources/default-enabled-features-subframe-fencedframe.https.html',
      [key, /*should_restrict_select_url=*/true]);
  const fencedframe = await attachFencedFrame(urn);

  const result = await nextValueFromServer(key);
  const [allows_shared_storage, allows_select_url] = result.split(",");

  assert_equals(allows_shared_storage, "false");
  assert_equals(allows_select_url, "false");
}, 'Iframes nested in fenced frames can further restrict policies');
</script>
</body>
</html>