| Test MediaKeyError constants and additional MediaError constant. | |
| EXPECTED (MediaKeyError.MEDIA_KEYERR_UNKNOWN == '1') OK | |
| EXPECTED (MediaKeyError.MEDIA_KEYERR_CLIENT == '2') OK | |
| EXPECTED (MediaKeyError.MEDIA_KEYERR_SERVICE == '3') OK | |
| EXPECTED (MediaKeyError.MEDIA_KEYERR_OUTPUT == '4') OK | |
| EXPECTED (MediaKeyError.MEDIA_KEYERR_HARDWARECHANGE == '5') OK | |
| EXPECTED (MediaKeyError.MEDIA_KEYERR_DOMAIN == '6') OK | |
| EXPECTED (MediaError.MEDIA_ERR_ENCRYPTED == '5') OK | |
| END OF TEST | |