| PASS Check if the intial value of the audio.volume is in the range 0.0 to 1.0 inclusive | |
| PASS Check if audio.volume is able to set to new value in the range 0.0 to 1.0 | |
| PASS Check if media.volume is able to set to new value 0.0 as silent | |
| PASS Check if media.volume is able to set to new value 1.0 as loudest | |
| PASS Check if media.volume is set to new value less than 0.0 that expecting an IndexSizeError exception is to be thrown | |
| PASS Check if audio.volume is set to new value greater than 1.0 that expecting an IndexSizeError exception is to be thrown | |