Class<?> clazz,
      ImmutableBiMap<String, String> specialCases,
      ImmutableSet<String> uppercaseAcronyms)
      throws IllegalAccessException {
    for (Field field : relevantFields(clazz)) {
      assertEquals(
          upperToHttpHeaderName(field.getName(), specialCases, uppercaseAcronyms), field.get(null));
    }
  }

  // Visible for other tests to use
  static ImmutableSet<Field> relevantFields(Class<?> cls) {