[play-animation.html]
  [If a pause operation is interrupted, the ready promise is reused]
    expected: FAIL

  [Playing a finished animation clears the start time]
    expected: FAIL

  [Playing a canceled animation backwards sets the start time]
    expected: FAIL

  [Playing a canceled animation sets the start time]
    expected: FAIL

  [The ready promise should be replaced if the animation is not already pending]
    expected: FAIL

  [A pending ready promise should be resolved and not replaced when the animation enters the running state]
    expected: FAIL

  [Playing a pause-pending but previously finished animation realigns with the scroll position]
    expected: FAIL

  [Playing an animations with a negative playback rate aligns the start time with the end of the active range]
    expected: FAIL

  [Playing a finished animation restarts the animation aligned at the start]
    expected: FAIL

  [Current time set while play pending is preserved.]
    expected: FAIL

  [Playing an animations aligns the start time with the start of the active range]
    expected: FAIL

  [Resuming an animation from paused realigns with scroll position.]
    expected: FAIL

  [Start time set while play pending is preserved.]
    expected: FAIL

  [A pending playback rate is used when determining timeline range alignment]
    expected: FAIL

  [Playing a finished and reversed animation restarts the animation aligned at the end]
    expected: FAIL

  [Playing a running animation resets a sticky start time]
    expected: FAIL