| PASS Playing a running animation leaves the current time unchanged | |
| PASS Playing a finished animation seeks back to the start | |
| PASS Playing a finished and reversed animation seeks to end | |
| PASS Playing a pause-pending but previously finished animation seeks back to to the start | |
| PASS Playing a finished animation clears the start time | |
| PASS The ready promise should be replaced if the animation is not already pending | |
| PASS A pending ready promise should be resolved and not replaced when the animation enters the running state | |
| PASS Resuming an animation from paused calculates start time from hold time | |
| PASS If a pause operation is interrupted, the ready promise is reused | |
| PASS A pending playback rate is used when determining auto-rewind behavior | |
| PASS Playing a canceled animation sets the start time | |
| PASS Playing a canceled animation backwards sets the start time | |