| <!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> |
