constructor.html - mozsearch

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This WPT test may be referenced by the following Test IDs:
- /html/semantics/embedded-content/media-elements/interfaces/TrackEvent/constructor.html - WPT Dashboard Interop Dashboard

<!doctype html>

<title>TrackEvent constructor</title>

<script src=/resources/testharness.js></script>

<script src=/resources/testharnessreport.js></script>

<div id=log></div>

<script>

test(function(){

    var ev = new TrackEvent('foo');

    assert_true(ev instanceof TrackEvent, 'ev instanceof TrackEvent');

    assert_true(ev instanceof Event, 'ev instanceof Event');

    assert_equals(ev.track, null, 'ev.track');

    ev.track = {};

    assert_equals(ev.track, null, 'ev.track after assignment');

}, document.title+', one arg');

test(function(){

    var video = document.createElement('video');

    var testTrack = video.addTextTrack('subtitles', 'foo', 'foo');

    var ev = new TrackEvent('foo', {track: testTrack});

    assert_true(ev instanceof TrackEvent, 'ev instanceof TrackEvent');

    assert_true(ev instanceof Event, 'ev instanceof Event');

    assert_equals(ev.track, testTrack, 'ev.track');

    ev.track = {};

    assert_equals(ev.track, testTrack, 'ev.track after assignment');

}, document.title+', two args');

</script>