_test("Calling setAttribute('open', '') to 'details' should fire a toggle event at the 'details' element"),
  t8 = async_test("Calling removeAttribute('open') to 'details' should fire a toggle event at the 'details' element"),
  t9 = async_test("Setting open=true to opened 'details' element should not fire a toggle event at the 'details' element"),
  t10 = async_test("Setting open=false to closed 'details' element should not fire a toggle event at the 'details' element"),

  details1 = document.getElementBy