HttpUtils { public static <T> ResponseProcessor<T> nullProcessor() { return response -> null; } private  HttpUtils(); static T waitFor(Future<? extends T> future); static Throwable unwrapCompletionException(Throwable ex); static boolean isSuccessStatus(int status); static ResponseProcessor<T> checkResponse(ResponseProcessor<T> processor,
                                                         Predicate<Response> successPredicate,
                                                         String tag); static ResponseProcessor<T> checkResponse(ResponseProcessor<T> processor,
                                                         Predicate<Response> successPredicate); static ResponseProcessor<T> checkResponse(ResponseProcessor<T> processor, String tag); static ResponseProcessor<T> checkResponse(ResponseProcessor<T> processor); static Predicate<Response> hasStatus(int status); static FailedRequestException createExceptionForResponse(Response response, String tag); static ResponseProcessor<T> jsonResult(ObjectMapper mapper, Class<T> resultClass); static ResponseProcessor<T> jsonResult(ObjectMapper mapper, TypeReference<T> typeReference); static Consumer<RequestBuilder> get(String uri); static ResponseProcessor<T> nullProcessor(); static String urlEncode(String src); static String addQueryParameters(String url, Map<String, ?> params); static String addQueryParameters(String url, Map<String, ?> params, boolean filterUndefined); static String addQueryParameter(String url, String key, Object value); static final Predicate<Response> SUCCESS_STATUS; }
@Test public void testNullProcessor() throws IOException { Response response = mock(Response.class); ResponseProcessor<Void> processor = HttpUtils.nullProcessor(); assertThat(processor.process(response)).isNull(); verifyZeroInteractions(response); }