[pseudo-class-defined-customized-builtins.html]
  [createElementNS("http://www.w3.org/2000/svg", "abbr", is:"my-abbr") should be :defined]
    expected: FAIL

  [Without browsing context: createElementNS("http://www.w3.org/2000/svg", "abbr", is:"my-abbr") should be :defined]
    expected: FAIL

  [createElementNS("http://www.w3.org/2000/svg", "p", is:"") should be :defined]
    expected: FAIL

  [Without browsing context: createElementNS("http://www.w3.org/2000/svg", "p", is:"") should be :defined]
    expected: FAIL