File: oncancel.html

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<!DOCTYPE html>
<meta charset=utf-8>
<title>Animation.oncancel</title>
<link rel="help" href="https://drafts.csswg.org/web-animations/#dom-animation-oncancel">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="../../testcommon.js"></script>
<body>
<div id="log"></div>
<script>
'use strict';

async_test(t => {
  const div = createDiv(t);
  const animation = div.animate({}, 100 * MS_PER_SEC);
  let finishedTimelineTime;
  animation.finished.then().catch(() => {
    finishedTimelineTime = animation.timeline.currentTime;
  });

  animation.oncancel = t.step_func_done(event => {
    assert_equals(event.currentTime, null,
      'event.currentTime should be null');
    assert_times_equal(event.timelineTime, finishedTimelineTime,
      'event.timelineTime should equal to the animation timeline ' +
      'when finished promise is rejected');
  });

  animation.cancel();
}, 'oncancel event is fired when animation.cancel() is called.');

</script>
</body>