[state-pseudo-class.html]
  [:--foo parsing passes]
    expected: FAIL

  [:--foo serialization]
    expected: FAIL

  [:--foo in simple cases]
    expected: FAIL

  [:--foo and other pseudo classes]
    expected: FAIL

  [:--foo and ::part()]
    expected: FAIL

  [:--foo and :host()]
    expected: FAIL

  [:--foo parsing passes]
    expected: FAIL

  [:--foo serialization]
    expected: FAIL

  [:--foo in simple cases]
    expected: FAIL

  [:--foo and other pseudo classes]
    expected: FAIL

  [:--foo and ::part()]
    expected: FAIL

  [:--foo and :host()]
    expected: FAIL