<!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>