 "fr");
        newTrack.mode = "showing";
        var newCue = new VTTCue(0, 1, "Test!");
        newTrack.addCue(newCue);
        assert_equals(newCue, newTrack.cues[0])
        assert_equals(newCue.track, newTrack);
        assert_equals(newCue.id, "");
        assert_equals(newCue.startTime, 0);
        assert_equals(newCue.endTime, 1);
        assert_equals(newCue.pauseOnExit, false);
        assert_equals(newCue.vertical, "");
        assert_equals(newCue.snapToLines, true);
        assert_equals(newC