.4);
        assert_equals(textCue.pauseOnExit, false);
        assert_equals(textCue.vertical, "");
        assert_equals(textCue.snapToLines, true);
        assert_equals(textCue.line, "auto");
        assert_equals(textCue.position, "auto");
        assert_equals(textCue.size, 100);
        assert_equals(textCue.align, "center");

        // Remove the unadded track, make sure it throws correctly.
        assert_throws_dom("NotFoundError", function() { trackElement.track.removeCue(textCue); });

        