
PASS Idle -> Pending or Before 
PASS Idle -> Before 
PASS Idle or Pending -> Active 
PASS Idle or Pending -> After 
PASS Before -> Idle (display: none) 
PASS Before -> Idle (Animation.timeline = null) 
PASS Before -> Active 
PASS Before -> After 
PASS Active -> Idle, no delay (display: none) 
PASS Active -> Idle, no delay (Animation.timeline = null) 
PASS Active -> Idle, with positive delay (display: none) 
PASS Active -> Idle, with positive delay (Animation.timeline = null) 
PASS Active -> Idle, with negative delay (display: none) 
PASS Active -> Idle, with negative delay (Animation.timeline = null) 
PASS Active -> Before 
PASS Active -> After 
PASS After -> Before 
PASS After -> Active 
PASS Calculating the interval start and end time with negative start delay. 
PASS Calculating the interval start and end time with negative end delay. 
PASS Call Animation.cancel after cancelling transition. 
PASS Restart transition after cancelling transition immediately 
PASS Call Animation.cancel after restarting transition immediately 
PASS Set timeline and play transition after clear the timeline 
PASS Set null target effect after cancel the transition 
PASS Cancel the transition after clearing the target effect