| Testing the TracksSupport behavior with audio tracks. | |
| On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE". | |
| The tracks button should be disabled initially as we wait for metadata and audio tracks to be added. | |
| PASS mediaController.controls.tracksButton.enabled is false | |
| Eventually the audio tracks will be added and the tracks button will be enabled. | |
| PASS mediaController.controls.tracksButton.enabled became true | |
| PASS successfullyParsed is true | |
| TEST COMPLETE | |