[parse-state.html]
  [":state(--foo)" should be a valid selector]
    expected: FAIL

  [":state(bar)" should be a valid selector]
    expected: FAIL

  [":state(--)" should be a valid selector]
    expected: FAIL

  [":state(--0)" should be a valid selector]
    expected: FAIL

  [":host(:state(--foo))" should be a valid selector]
    expected: FAIL

  ["my-input[type=\\"foo\\"\]:state(checked)" should be a valid selector]
    expected: FAIL

  ["my-input[type=\\"foo\\"\]:state(--0)::before" should be a valid selector]
    expected: FAIL

  ["my-input[type=\\"foo\\"\]:state(--0)::part(inner)" should be a valid selector]
    expected: FAIL

  ["my-input[type=\\"foo\\"\]:state(--0)::part(inner):state(bar)" should be a valid selector]
    expected: FAIL

  ["::part(inner):state(bar)::before" should be a valid selector]
    expected: FAIL

  ["::part(inner):state(bar)::after" should be a valid selector]
    expected: FAIL