accessibility-timeline-element.html

<!DOCTYPE html>
<html lang="en-US">
<title>Media Controls: timeline element accessibility tests</title>
<script src="../../resources/testharness.js"></script>
<script src="../../resources/testharnessreport.js"></script>
<script src="../media-controls.js"></script>
<video controls preload=none></video>
<audio controls preload=none></audio>
<script>
async_test(t => {
  var video = document.querySelector('video');
  video.src = '../content/test.ogv';

  // Check to see that values are reasonable even if we haven't loaded.
  var timeline_element = timelineElement(video);
  assert_equals(timeline_element.getAttribute('aria-label'), 'video time scrubber');
  assert_equals(timeline_element.getAttribute('aria-valuetext'), 'elapsed time: 0:00');
  assert_equals(timeline_element.getAttribute('aria-description'), 'total time: 0:00');

  video.addEventListener('loadedmetadata', t.step_func(_ => {

    // Check to see that we are showing the right values on load.
  var timeline_element = timelineElement(video);
    assert_equals(timeline_element.getAttribute('aria-label'), 'video time scrubber');
    assert_equals(timeline_element.getAttribute('aria-valuetext'), 'elapsed time: 0:00');
    assert_equals(timeline_element.getAttribute('aria-description'), 'total time: 0:06');

    video.onseeked = t.step_func(_ => {
     // Check to see that we don't update Aria during the playback.
     assert_equals(timeline_element.getAttribute('aria-label'),
                  'video time scrubber');
     assert_equals(timeline_element.getAttribute('aria-valuetext'), 'elapsed time: 0:00');
    assert_equals(timeline_element.getAttribute('aria-description'), 'total time: 0:06');

      // To make sure all the tests run before t.step_func_done, we load audio after we test video.
      audio.load();
    });
    video.currentTime = 1;
  }));

  video.load();

  var audio = document.querySelector('audio');
  audio.src = '../content/test.oga';

  audio.oncanplaythrough = t.step_func(_ => {
  var timeline_element = timelineElement(audio);
    assert_equals(timeline_element.getAttribute('aria-label'), 'audio time scrubber');
    assert_equals(timeline_element.getAttribute('aria-valuetext'), 'elapsed time: 0:00');
    assert_equals(timeline_element.getAttribute('aria-description'), 'total time: 0:07');

    audio.onseeked = t.step_func_done(_ => {
      assert_equals(timeline_element.getAttribute('aria-label'), 'audio time scrubber');
      assert_equals(timeline_element.getAttribute('aria-valuetext'), 'elapsed time: 0:00');
      assert_equals(timeline_element.getAttribute('aria-description'), 'total time: 0:07');
    });

    audio.currentTime = 1;
  });

});
</script>
</html>
chromium/third_party/blink/web_tests/media/controls/accessibility-timeline-element.html
