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Test Info: Warnings

<!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>