<!DOCTYPE html>
<title>Test the before unload event</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>

<body>

<script>
promise_test(async () => {
  const before_unload_key = token();

  const frame_url = generateURL("resources/before-unload-inner.html",
      [before_unload_key]);

  attachFencedFrame(frame_url);

  const result = await nextValueFromServer(before_unload_key);
  assert_equals(result, "Loaded the next url in a fenced frame",
                "A fenced frame should not fire the before unload event.");
}, "before unload event in fenced frames");
</script>

</body>
