"RTT", "TE", "UA", "UID", "URL", "WWW", "XSS");

    for (Field field : httpHeadersFields()) {
      assertThat(field.get(null))
          .isEqualTo(upperToHttpHeaderName(field.getName(), specialCases, uppercaseAcronyms));
    }
  }

  // Tests that there are no duplicate HTTP header names
  public void testNoDuplicateFields() throws Exception {