mozilla-release/testing/web-platform/tests/remote-playback/disable-remote-playback-watch-availability-throws.html

<!DOCTYPE html>
<html>
<title>Test that calling watchAvailability() when disableRemotePlayback attribute is set throws an exception</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/common/media.js"></script>
<script>
promise_test(t => {
  var v = document.createElement('video');
  v.src = getVideoURI('/media/movie_5');
  v.disableRemotePlayback = true;

  return promise_rejects_dom(t, 'InvalidStateError',
                         v.remote.watchAvailability(function() {}));
}, 'Test that calling watchAvailability() when disableRemotePlayback attribute is set throws an exception.');
</script>
</html>