[constructor.html]
  [VTTCue(), initial values]
    expected: FAIL

  [VTTCue(), bad start time]
    expected: FAIL

  [VTTCue(), bad end time]
    expected: FAIL

  [VTTCue(), unbounded end time]
    expected: FAIL

  [VTTCue(), text formatting]
    expected: FAIL