[interestevent-interface.tentative.html]
  [action is a readonly defaulting to '']
    expected: FAIL

  [invoker is readonly defaulting to null]
    expected: FAIL

  [action reflects initialized attribute]
    expected: FAIL

  [action set to undefined]
    expected: FAIL

  [action set to null]
    expected: FAIL

  [action set to false]
    expected: FAIL

  [action explicitly set to empty string]
    expected: FAIL

  [action set to true]
    expected: FAIL

  [action set to a number]
    expected: FAIL

  [action set to [\]]
    expected: FAIL

  [action set to [1, 2, 3\]]
    expected: FAIL

  [action set to an object]
    expected: FAIL

  [action set to an object with a toString function]
    expected: FAIL

  [InterestEventInit properties set value]
    expected: FAIL

  [InterestEventInit properties set value 2]
    expected: FAIL

  [InterestEventInit properties set value 3]
    expected: FAIL

  [invoker set to undefined]
    expected: FAIL

  [invoker set to null]
    expected: FAIL

  [invoker set to false]
    expected: FAIL

  [invoker set to true]
    expected: FAIL

  [invoker set to {}]
    expected: FAIL

  [invoker set to non-Element EventTarget]
    expected: FAIL