overflow-button-disabled-no-source.html

<!DOCTYPE html>
<html>
<title>Test that the overflow menu is disabled with no source.</title>
<script src="../../resources/testharness.js"></script>
<script src="../../resources/testharnessreport.js"></script>
<script src="../media-controls.js"></script>
<video controls width=400 controlsList="noplaybackrate nodownload" disablePictureInPicture></video>
<script>
async_test(t => {
  const video = document.querySelector('video');

  // Make sure the button is visible and disabled.
  assert_true(overflowButton(video).disabled);
  assert_equals(overflowButton(video).style.display, '');

  // Set the source and start playing.
  video.src = '../content/60_sec_video.webm';
  video.play().then(t.step_func_done(() => {
    // Make sure the button has been hidden and is no longer disabled.
    assert_false(overflowButton(video).disabled);
    assert_equals(overflowButton(video).style.display, 'none');
  }), t.unreached_func());
});
</script>
</html>

chromium/third_party/blink/web_tests/media/controls/overflow-button-disabled-no-source.html