Tests that the TextTrack "id" attribute is appropriately set.


++ Test default attribute value
EXPECTED (textTrack.id == 'LoremIpsum') OK
EXPECTED (video.textTracks[0].id == 'LoremIpsum') OK

++ Make sure we can look tracks up by id
EXPECTED (video.textTracks.getTrackById('LoremIpsum') == '[object TextTrack]') OK

++ Test that it's readonly
RUN(textTrack.id = 'newvalue';)
EXPECTED (textTrack.id == 'LoremIpsum') OK
END OF TEST