| PASS | HTMLTrackElement.label missing value | |
| PASS | HTMLTrackElement.label empty string content attribute | |
| PASS | HTMLTrackElement.label empty string IDL attribute | |
| PASS | HTMLTrackElement.label lowercase content attribute | |
| PASS | HTMLTrackElement.label uppercase content attribute | |
| PASS | HTMLTrackElement.label\u0000 in content attribute | |
| PASS | HTMLTrackElement.label lowercase IDL attribute | |
| PASS | HTMLTrackElement.label uppercase IDL attribute | |
| PASS | HTMLTrackElement.label whitespace in content attribute | |
| PASS | HTMLTrackElement.label whitespace in IDL attribute | |
| PASS | HTMLTrackElement.label \u0000 in IDL attribute | |