[button-event-dispatch.html]
  [event dispatches on click with addEventListener]
    expected: FAIL

  [event dispatches on click with oncommand property]
    expected: FAIL

  [setting custom command property to --foo (must include dash) sets event command]
    expected: FAIL

  [setting custom command attribute to --foo (must include dash) sets event command]
    expected: FAIL

  [setting custom command property to --foo- (must include dash) sets event command]
    expected: FAIL

  [setting custom command attribute to --foo- (must include dash) sets event command]
    expected: FAIL

  [setting custom command property to --cAsE-cArRiEs (must include dash) sets event command]
    expected: FAIL

  [setting custom command attribute to --cAsE-cArRiEs (must include dash) sets event command]
    expected: FAIL

  [setting custom command property to -- (must include dash) sets event command]
    expected: FAIL

  [setting custom command attribute to -- (must include dash) sets event command]
    expected: FAIL

  [setting custom command property to --a- (must include dash) sets event command]
    expected: FAIL

  [setting custom command attribute to --a- (must include dash) sets event command]
    expected: FAIL

  [setting custom command property to --a-b (must include dash) sets event command]
    expected: FAIL

  [setting custom command attribute to --a-b (must include dash) sets event command]
    expected: FAIL

  [setting custom command property to --- (must include dash) sets event command]
    expected: FAIL

  [setting custom command attribute to --- (must include dash) sets event command]
    expected: FAIL

  [setting custom command property to --show-picker (must include dash) sets event command]
    expected: FAIL

  [setting custom command attribute to --show-picker (must include dash) sets event command]
    expected: FAIL

  [event dispatches if button is form associated, with explicit type=button]
    expected: FAIL

  [event dispatches if invokee is non-HTML Element]
    expected: FAIL