1 Ensure that a TextTrackCue won't be collected if it has a custom property.
4 EXPECTED (video.textTracks[0].cues.length == '4') OK
5 EXPECTED (video.textTracks[0].cues[1].startTime == '31') OK
7 ** Add a custom property to a cue.
8 RUN(video.textTracks[0].cues[1].myProperty = 'tuna salad?')
9 EXPECTED (video.textTracks[0].cues[1].myProperty == 'tuna salad?') OK
11 ** Force garbage collection.
12 EXPECTED (video.textTracks[0].cues.length == '4') OK
13 EXPECTED (video.textTracks[0].cues[1].myProperty == 'tuna salad?') OK