chromium/third_party/blink/web_tests/media/controls/video-controls-overflow-menu-text.html

<!DOCTYPE html>
<title>Overflow menu displays the correct text.</title>
<script src="../../resources/testharness.js"></script>
<script src="../../resources/testharnessreport.js"></script>
<script src="../media-controls.js"></script>
<script src="../overflow-menu.js"></script>

<!--Padding ensures the overflow menu is visible for the tests. -->
<body style="padding-top: 200px; padding-left: 100px">
<video controls></video>
<script>
async_test(function(t) {
  // Set up video
  var video = document.querySelector("video");
  video.src = "../content/test.ogv";
  // Add captions
  var track = video.addTextTrack("captions");
  // Pretend we have a cast device
  internals.mediaPlayerRemoteRouteAvailabilityChanged(video, true);

  video.onloadeddata = t.step_func_done(function() {
    var overflowList = getOverflowList(video);
    var children = overflowList.children;
    // Ensure that all of the buttons are visible in the right order
    for (var i = 0; i < children.length; i++) {
      var child = children[i];
      var innerButton = child.children[0];
      // Check for text content disregarding casing. Mac OS and other OS
      // have different casing styles.
      assert_equals(child.textContent.toLowerCase(),
                    overflowMenuText[i].toLowerCase());
    }
  });
});
</script>
</body>