[sibling.html]
  [Adjacent class]
    expected: FAIL

  [Sibling subtree through an indirect adjacent combinator]
    expected: FAIL

  [Adjacent with universal selector]
    expected: FAIL

  [Adjacent universal]
    expected: FAIL

  [Sibling descendant through a universal selector]
    expected: FAIL

  [Indirect adjacent with two adjacent selectors]
    expected: FAIL

  [Indirect adjacent with universal selector]
    expected: FAIL