[toggleEvent.html]
  [Adding open to 'details' should fire a toggle event at the 'details' element, with 'oldState: closed' and 'newState: open']
    expected: FAIL

  [Adding open to 'details' and then removing open from that 'details' should fire only one toggle event at the 'details' element, with 'oldState: closed' and 'newState: closed']
    expected: FAIL

  [Adding open to 'details' (display:none) should fire a toggle event at the 'details' element, with 'oldState: closed' and 'newState: open']
    expected: FAIL

  [Adding open to 'details' (no children) should fire a toggle event at the 'details' element, with 'oldState: closed' and 'newState: open']
    expected: FAIL

  [Adding open to 'details' and then removing open from that 'details' and then again adding open to that 'details' should fire only one toggle event at the 'details' element, with 'oldState: closed' and 'newState: closed']
    expected: FAIL

  [Adding open to 'details' using setAttribute('open', '') should fire a toggle event at the 'details' element, with 'oldState: closed' and 'newState: open']
    expected: FAIL

  [Adding open to 'details' and then calling removeAttribute('open') should fire only one toggle event at the 'details' element, with 'oldState: closed' and 'newState: closed']
    expected: FAIL

  [Adding open to 'details' (not in the document) should fire a toggle event at the 'details' element, with 'oldState: closed' and 'newState: open']
    expected: FAIL