[dialog-showModal.html]
  type: testharness
  [dialog element: showModal()]
    expected: FAIL

  [showModal() on a <dialog> that already has an open attribute throws an InvalidStateError exception]
    expected: FAIL

  [showModal() on a <dialog> not in a Document throws an InvalidStateError exception]
    expected: FAIL

  [when opening multiple dialogs, only the newest one is non-inert]
    expected: FAIL

  [opening dialog without focusable children]
    expected: FAIL

  [opening dialog with multiple focusable children]
    expected: FAIL

  [opening dialog with multiple focusable children, one having the autofocus attribute]
    expected: FAIL