1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
|
<!DOCTYPE html>
<title>TextTracks in a TextTrackList are kept in the correct order</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<video>
<track kind="captions" src="resources/webvtt-file.vtt">
</video>
<script>
test(function() {
var video = document.querySelector("video");
// Add a track with video.addTextTrack().
video.addTextTrack("descriptions", "Descriptions Track", "en");
// Add a track element with DOM API.
var trackElement = document.createElement("track");
trackElement.setAttribute("kind", "chapters");
video.appendChild(trackElement);
// Verify track order.
assert_equals(video.textTracks.length, 3);
assert_equals(video.textTracks[0].kind, "captions");
assert_equals(video.textTracks[1].kind, "chapters");
assert_equals(video.textTracks[2].kind, "descriptions");
// Verify the default parameters of the text track object
// returned by addTextTrack().
assert_equals(video.textTracks[2].mode, "hidden");
assert_not_equals(video.textTracks[2].cues, null);
assert_equals(video.textTracks[2].cues.length, 0);
// Add another track element, it should insert
// before the addTextTrack() track.
trackElement = document.createElement("track");
trackElement.setAttribute("kind", "metadata");
video.appendChild(trackElement);
assert_equals(video.textTracks.length, 4);
assert_equals(video.textTracks[0].kind, "captions");
assert_equals(video.textTracks[1].kind, "chapters");
assert_equals(video.textTracks[2].kind, "metadata");
assert_equals(video.textTracks[3].kind, "descriptions");
});
</script>
|
