/*
* Copyright 2002-2017 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.springframework.web.reactive.result.method.annotation;
import java.lang.reflect.Method;
import java.util.ArrayList;
import java.util.List;
import org.junit.Before;
import org.junit.Test;
import reactor.core.publisher.Mono;
import rx.Completable;
import rx.Single;
import org.springframework.core.codec.ByteBufferEncoder;
import org.springframework.core.codec.CharSequenceEncoder;
import org.springframework.http.codec.EncoderHttpMessageWriter;
import org.springframework.http.codec.ResourceHttpMessageWriter;
import org.springframework.http.codec.HttpMessageWriter;
import org.springframework.http.codec.json.Jackson2JsonEncoder;
import org.springframework.http.codec.xml.Jaxb2XmlEncoder;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.method.HandlerMethod;
import org.springframework.web.reactive.HandlerResult;
import org.springframework.web.reactive.accept.RequestedContentTypeResolver;
import org.springframework.web.reactive.accept.RequestedContentTypeResolverBuilder;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertTrue;
import static org.springframework.web.method.ResolvableMethod.on;
/**
* Unit tests for {@link ResponseBodyResultHandler}.When adding a test also
* consider whether the logic under test is in a parent class, then see:
* <ul>
* <li>{@code MessageWriterResultHandlerTests},
* <li>{@code ContentNegotiatingResultHandlerSupportTests}
* </ul>
*
* @author Sebastien Deleuze
* @author Rossen Stoyanchev
*/
public class ResponseBodyResultHandlerTests {
private ResponseBodyResultHandler resultHandler;
@Before
public void setup() throws Exception {
List<HttpMessageWriter<?>> writerList = new ArrayList<>(5);
writerList.add(new EncoderHttpMessageWriter<>(new ByteBufferEncoder()));
writerList.add(new EncoderHttpMessageWriter<>(CharSequenceEncoder.allMimeTypes()));
writerList.add(new ResourceHttpMessageWriter());
writerList.add(new EncoderHttpMessageWriter<>(new Jaxb2XmlEncoder()));
writerList.add(new EncoderHttpMessageWriter<>(new Jackson2JsonEncoder()));
RequestedContentTypeResolver resolver = new RequestedContentTypeResolverBuilder().build();
this.resultHandler = new ResponseBodyResultHandler(writerList, resolver);
}
@Test
public void supports() throws NoSuchMethodException {
Object controller = new TestController();
Method method;
method = on(TestController.class).annotPresent(ResponseBody.class).resolveMethod();
testSupports(controller, method);
method = on(TestController.class).annotNotPresent(ResponseBody.class).resolveMethod();
HandlerResult handlerResult = getHandlerResult(controller, method);
assertFalse(this.resultHandler.supports(handlerResult));
}
@Test
public void supportsRestController() throws NoSuchMethodException {
Object controller = new TestRestController();
Method method;
method = on(TestRestController.class).returning(String.class).resolveMethod();
testSupports(controller, method);
method = on(TestRestController.class).returning(Mono.class, String.class).resolveMethod();
testSupports(controller, method);
method = on(TestRestController.class).returning(Single.class, String.class).resolveMethod();
testSupports(controller, method);
method = on(TestRestController.class).returning(Completable.class).resolveMethod();
testSupports(controller, method);
}
private void testSupports(Object controller, Method method) {
HandlerResult handlerResult = getHandlerResult(controller, method);
assertTrue(this.resultHandler.supports(handlerResult));
}
private HandlerResult getHandlerResult(Object controller, Method method) {
HandlerMethod handlerMethod = new HandlerMethod(controller, method);
return new HandlerResult(handlerMethod, null, handlerMethod.getReturnType());
}
@Test
public void defaultOrder() throws Exception {
assertEquals(100, this.resultHandler.getOrder());
}
@RestController
@SuppressWarnings("unused")
private static class TestRestController {
public Mono<Void> handleToMonoVoid() { return null;}
public String handleToString() {
return null;
}
public Mono<String> handleToMonoString() {
return null;
}
public Single<String> handleToSingleString() {
return null;
}
public Completable handleToCompletable() {
return null;
}
}
@Controller
@SuppressWarnings("unused")
private static class TestController {
@ResponseBody
public String handleToString() {
return null;
}
public String doWork() {
return null;
}
}
}