webvtt/api/VTTCue/region.html

<!doctype html>
<title>VTTCue.region</title>
<link rel="help" href="https://w3c.github.io/webvtt/#dom-vttcue-region">
<script src=/resources/testharness.js></script>
<script src=/resources/testharnessreport.js></script>
<div id=log></div>
<script>
test(function(){
    var video = document.createElement('video');
    document.body.appendChild(video);

    var cue = new VTTCue(0, 1, 'text');
    assert_true('region' in cue, 'region is not supported');
    assert_equals(cue.region, null);

    var track = document.createElement('track');
    var t = track.track;
    t.addCue(cue);

    assert_equals(cue.region, null);

    video.appendChild(track);
    assert_equals(cue.region, null);

    t.mode = 'showing';
    assert_equals(cue.region, null);

    var region = new VTTRegion();
    cue.region = region;
    assert_equals(cue.region, region);

    cue.region = 'foo';
    assert_equals(cue.region, region);

    cue.region = null;
    assert_equals(cue.region, null);
}, document.title+', script-created cue');
</script>