[attr-null-namespace.xhtml]
  [Attribute in null-namespace is substituted]
    expected: FAIL

  [Fallback is taken when attribute does not exist in null-namespace]
    expected: FAIL

  [Attribute in null-namespace is substituted (JS)]
    expected: FAIL

  [Fallback is taken when attribute does not does exist in null-namespace (JS)]
    expected: FAIL