assertThat(field.get(null))
          .isEqualTo(upperToHttpHeaderName(field.getName(), specialCases, uppercaseAcronyms));
    }
  }

  // Tests that there are no duplicate HTTP header names
  public void testNoDuplicateFields() throws Exception {
    ImmutableList.Builder<String> httpHeaders = ImmutableList.builder();
    for (Field field : httpHeadersFields()) {
      httpHeaders.add((String) field.get(null));
    }