[contenteditable-enumerated-ascii-case-insensitive.html]
  [IDL attribute setter for value "true"]
    expected: FAIL

  [IDL attribute getter for attribute value "TRUE"]
    expected: FAIL

  [IDL attribute setter for value "TRUE"]
    expected: FAIL

  [IDL attribute setter for value "false"]
    expected: FAIL

  [IDL attribute getter for attribute value "FALSE"]
    expected: FAIL

  [IDL attribute setter for value "FALSE"]
    expected: FAIL

  [IDL attribute setter for value "plaintext-only"]
    expected: FAIL

  [IDL attribute getter for attribute value "PLAINTEXT-ONLY"]
    expected: FAIL

  [IDL attribute setter for value "PLAINTEXT-ONLY"]
    expected: FAIL

  [IDL attribute getter for attribute value "foobar"]
    expected: FAIL

  [IDL attribute setter for value "foobar"]
    expected: FAIL

  [IDL attribute getter for attribute value "falſe"]
    expected: FAIL

  [IDL attribute setter for value "falſe"]
    expected: FAIL

  [IDL attribute getter for attribute value "plaıntext-only"]
    expected: FAIL

  [IDL attribute setter for value "plaıntext-only"]
    expected: FAIL

  [IDL attribute getter for attribute value "plaİntext-only"]
    expected: FAIL

  [IDL attribute setter for value "plaİntext-only"]
    expected: FAIL