| <!DOCTYPE html> |
| <title>Removing an active cue</title> |
| <script src="/common/media.js"></script> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <video></video> |
| <script> |
| async_test(function(t) { |
| var video = document.querySelector("video"); |
| video.src = getVideoURI("/media/test"); |
| |
| // Add a text track to the video element. |
| video.addTextTrack("captions", "regular captions track", "en"); |
| |
| // Add a cue to the track with enter event listener. |
| var cue = new VTTCue(0, 4, "Random"); |
| cue.onenter = t.step_func_done(removeActiveCue); |
| |
| var track = video.textTracks[0]; |
| track.addCue(cue); |
| |
| function removeActiveCue() { |
| assert_equals(track.activeCues.length, 1); |
| |
| // Remove the cue while it is active. |
| track.removeCue(track.activeCues[0]); |
| |
| // No crash. PASS. |
| } |
| |
| // Play the video and remove cue when it becomes active. |
| video.play(); |
| track.mode = "showing"; |
| }); |
| </script> |
