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Test Info: Warnings

<!DOCTYPE html>
<title>Test window.close has no effect</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>
<body>
<script>
promise_test(async () => {
const frame = attachFencedFrameContext();
await frame.execute(async () => {
// This should have no effect for fenced frames.
window.close();
// window.closed will be true if the window closing steps have begun.
assert_false(window.closed);
});
}, 'window.close');
</script>
</body>