| Testing the PlacardSupport behavior with an error. | |
| On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE". | |
| PASS mediaController.controls.placard is mediaController.controls.invalidPlacard | |
| PASS mediaController.controls.children.includes(mediaController.controls.invalidPlacard) is true | |
| PASS successfullyParsed is true | |
| TEST COMPLETE | |