/*
* Copyright 2002-2015 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.servlet.mvc.method.annotation;
import static org.junit.Assert.*;
import static org.mockito.BDDMockito.*;
import java.io.IOException;
import java.util.Arrays;
import java.util.List;
import org.junit.Before;
import org.junit.Test;
import org.mockito.Mockito;
import org.springframework.core.MethodParameter;
import org.springframework.http.HttpInputMessage;
import org.springframework.http.MediaType;
import org.springframework.http.converter.HttpMessageConverter;
import org.springframework.http.converter.StringHttpMessageConverter;
import org.springframework.http.server.ServerHttpRequest;
import org.springframework.http.server.ServerHttpResponse;
import org.springframework.http.server.ServletServerHttpRequest;
import org.springframework.http.server.ServletServerHttpResponse;
import org.springframework.mock.web.test.MockHttpServletRequest;
import org.springframework.mock.web.test.MockHttpServletResponse;
import org.springframework.stereotype.Controller;
import org.springframework.util.ClassUtils;
import org.springframework.web.bind.annotation.ControllerAdvice;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.method.ControllerAdviceBean;
/**
* Unit tests for {@link RequestResponseBodyAdviceChain}.
*
* @author Rossen Stoyanchev
* @since 4.2
*/
public class RequestResponseBodyAdviceChainTests {
private String body;
private MediaType contentType;
private Class<? extends HttpMessageConverter<?>> converterType;
private MethodParameter paramType;
private MethodParameter returnType;
private ServerHttpRequest request;
private ServerHttpResponse response;
@Before
public void setup() {
this.body = "body";
this.contentType = MediaType.TEXT_PLAIN;
this.converterType = StringHttpMessageConverter.class;
this.paramType = new MethodParameter(ClassUtils.getMethod(this.getClass(), "handle", String.class), 0);
this.returnType = new MethodParameter(ClassUtils.getMethod(this.getClass(), "handle", String.class), -1);
this.request = new ServletServerHttpRequest(new MockHttpServletRequest());
this.response = new ServletServerHttpResponse(new MockHttpServletResponse());
}
@SuppressWarnings("unchecked")
@Test
public void requestBodyAdvice() throws IOException {
RequestBodyAdvice requestAdvice = Mockito.mock(RequestBodyAdvice.class);
ResponseBodyAdvice<String> responseAdvice = Mockito.mock(ResponseBodyAdvice.class);
List<Object> advice = Arrays.asList(requestAdvice, responseAdvice);
RequestResponseBodyAdviceChain chain = new RequestResponseBodyAdviceChain(advice);
HttpInputMessage wrapped = new ServletServerHttpRequest(new MockHttpServletRequest());
given(requestAdvice.supports(this.paramType, String.class, this.converterType)).willReturn(true);
given(requestAdvice.beforeBodyRead(eq(this.request), eq(this.paramType), eq(String.class),
eq(this.converterType))).willReturn(wrapped);
assertSame(wrapped, chain.beforeBodyRead(this.request, this.paramType, String.class, this.converterType));
String modified = "body++";
given(requestAdvice.afterBodyRead(eq(this.body), eq(this.request), eq(this.paramType),
eq(String.class), eq(this.converterType))).willReturn(modified);
assertEquals(modified, chain.afterBodyRead(this.body, this.request, this.paramType,
String.class, this.converterType));
}
@SuppressWarnings("unchecked")
@Test
public void responseBodyAdvice() {
RequestBodyAdvice requestAdvice = Mockito.mock(RequestBodyAdvice.class);
ResponseBodyAdvice<String> responseAdvice = Mockito.mock(ResponseBodyAdvice.class);
List<Object> advice = Arrays.asList(requestAdvice, responseAdvice);
RequestResponseBodyAdviceChain chain = new RequestResponseBodyAdviceChain(advice);
String expected = "body++";
given(responseAdvice.supports(this.returnType, this.converterType)).willReturn(true);
given(responseAdvice.beforeBodyWrite(eq(this.body), eq(this.returnType), eq(this.contentType),
eq(this.converterType), same(this.request), same(this.response))).willReturn(expected);
String actual = (String) chain.beforeBodyWrite(this.body, this.returnType, this.contentType,
this.converterType, this.request, this.response);
assertEquals(expected, actual);
}
@Test
public void controllerAdvice() {
Object adviceBean = new ControllerAdviceBean(new MyControllerAdvice());
RequestResponseBodyAdviceChain chain = new RequestResponseBodyAdviceChain(Arrays.asList(adviceBean));
String actual = (String) chain.beforeBodyWrite(this.body, this.returnType, this.contentType,
this.converterType, this.request, this.response);
assertEquals("body-MyControllerAdvice", actual);
}
@Test
public void controllerAdviceNotApplicable() {
Object adviceBean = new ControllerAdviceBean(new TargetedControllerAdvice());
RequestResponseBodyAdviceChain chain = new RequestResponseBodyAdviceChain(Arrays.asList(adviceBean));
String actual = (String) chain.beforeBodyWrite(this.body, this.returnType, this.contentType,
this.converterType, this.request, this.response);
assertEquals(this.body, actual);
}
@ControllerAdvice
private static class MyControllerAdvice implements ResponseBodyAdvice<String> {
@Override
public boolean supports(MethodParameter returnType, Class<? extends HttpMessageConverter<?>> converterType) {
return true;
}
@SuppressWarnings("unchecked")
@Override
public String beforeBodyWrite(String body, MethodParameter returnType,
MediaType contentType, Class<? extends HttpMessageConverter<?>> converterType,
ServerHttpRequest request, ServerHttpResponse response) {
return body + "-MyControllerAdvice";
}
}
@ControllerAdvice(annotations = Controller.class)
private static class TargetedControllerAdvice implements ResponseBodyAdvice<String> {
@Override
public boolean supports(MethodParameter returnType, Class<? extends HttpMessageConverter<?>> converterType) {
return true;
}
@SuppressWarnings("unchecked")
@Override
public String beforeBodyWrite(String body, MethodParameter returnType,
MediaType contentType, Class<? extends HttpMessageConverter<?>> converterType,
ServerHttpRequest request, ServerHttpResponse response) {
return body + "-TargetedControllerAdvice";
}
}
@SuppressWarnings("unused")
@ResponseBody
public String handle(String body) {
return "";
}
}