废话不多说了，看一下需要几步就能搞定MVC Controller与Service层的集成测试。（如果你现在也正好使用Spring Test框架，可以看看下面对TestNG基类封装的代码，我觉得自己写得还可以。小小赞美一下啦~）
1. 定义底层Service接口及实现
/**
* User service.
*/
public interface UserService {
/**
* Gets user info for specified user ID.
*
* @param id user ID
* @return
*/
User getUserInfo(long id);
/**
* Updates user info.
*
* @param user user info
* @return -1 means fail, 0 means success.
*/
int updateUserInfo(User user);
}
/**
* User query service.
*/
public interface UserQueryService {
/**
* Gets user name for specified user ID.
*
* @param userId user ID
* @return
*/
String getUserName(long userId);
/**
* Updates user name for specified user ID.
*
* @param userId
* @param userName
* @return -1 means fail, 0 means success.
*/
int updateUserName(long userId, String userName);
}
/**
* User query service implementation.
*/
@Service
public class UserQueryServiceImpl implements UserQueryService {
@Autowired
private UserService userService;
@Override
public String getUserName(long userId) {
User user = this.userService.getUserInfo(userId);
return user != null ? user.getName() : "";
}
@Override
public int updateUserName(long userId, String userName) {
User user = new User(userId, userName);
int udpateResult = this.userService.updateUserInfo(user);
return udpateResult;
}
}
2. 为 Controller 层的每一接口定义一对 Request与Response（可重用的，就别多定义啦！~\(≧▽≦)/~）
/**
* Base request info.
*
* @author Bert Lee
* @version 2014-8-19
*/
@JsonIgnoreProperties(ignoreUnknown = true) // 忽略多传的参数
public class BaseRequest {
}
/**
* User ID request info.
*
* @author Bert Lee
* @version 2014-8-19
*/
public class UserIDRequest extends BaseRequest {
@JsonProperty("id")
@NotNull(message = "id param is null")
@Min(value = 1, message = "id param must be great or equal than \\{{value}\\}") // 4.3. Message interpolation -《JSR 303: Bean Validation》
protected long id;
public long getId() {
return id;
}
public void setId(long id) {
this.id = id;
}
@Override
public String toString() {
return "UserIDRequest [id=" + id + "]";
}
}
/**
* User name response info.
*/
public class UserNameResponse {
@JsonProperty("name")
protected String name = "";
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
@Override
public String toString() {
return "UserNameResponse [name=" + name + "]";
}
}
/**
* User info request info.
*/
public class UserInfoRequest extends UserIDRequest {
@JsonProperty("name")
@NotNull(message = "name param is null")
@Size(min = 1, message = "name param is empty")
protected String userName; // 变量名与请求参数名不一样，在@RequestBody中用到
public String getUserName() {
return userName;
}
public void setUserName(String userName) {
this.userName = userName;
}
@Override
public String toString() {
return "UserInfoRequest [userName=" + userName + ", id=" + id + "]";
}
}
/**
* User modify result response info.
*/
public class UserResultResponse {
@JsonProperty("ret")
protected int result;
@JsonProperty("ret_msg")
protected String resultMessage;
public UserResultResponse() {
this.result = 0;
this.resultMessage = "ok";
}
public int getResult() {
return result;
}
public void setResult(int result) {
this.result = result;
}
public String getResultMessage() {
return resultMessage;
}
public void setResultMessage(String resultMessage) {
this.resultMessage = resultMessage;
}
@Override
public String toString() {
return "UserResultResponse [result=" + result + ", resultMessage="
+ resultMessage + "]";
}
}
3. 实现 Controller 层逻辑
/**
* User Controller.
*
* @author Bert Lee
* @version 2014-8-19
*/
@Controller
@RequestMapping(value = "/user")
public class UserController {
@Autowired
private UserQueryService userQueryService;
@RequestMapping(value = "/get_user_name", method = RequestMethod.GET, produces = MediaType.APPLICATION_JSON_VALUE)
@ResponseBody
public UserNameResponse getUserName(@Valid UserIDRequest userIDRequest) {
long userId = userIDRequest.getId();
String userName = this.userQueryService.getUserName(userId);
UserNameResponse response = new UserNameResponse();
if (!StringUtils.isEmpty(userName)) {
response.setName(userName);
}
return response;
}
@RequestMapping(value = "/update_user_name", method = RequestMethod.POST,
consumes = MediaType.APPLICATION_JSON_VALUE, produces = MediaType.APPLICATION_JSON_VALUE)
@ResponseBody
public UserResultResponse updateUserName(@Valid @RequestBody UserInfoRequest userInfoRequest) { // JSON request body map
UserResultResponse response = new UserResultResponse();
long userId = userInfoRequest.getId();
String userName = userInfoRequest.getUserName();
int result = this.userQueryService.updateUserName(userId, userName);
if (result < 0) {
response.setResult(result);
response.setResultMessage("update operation is fail");
}
return response;
}
}
4. 实现一个Service与Controller层的抽象测试基类（用于集成TestNG与MVC Test框架，且自动加载配置文件）
/**
* Abstract base test class for TestNG.
*
* @author Bert Lee
* @version 2014-8-19
*/
@ContextConfiguration("classpath:META-INF/spring/test-context.xml") // 集成应用上下文并加载默认的beans XML配置
public abstract class AbstractTestNGTest extends AbstractTestNGSpringContextTests { // 集成TestNG
/**
* Initializes the test context.
*/
@BeforeSuite(alwaysRun = true)
public void init() {
// MockitoAnnotations.initMocks(this); // 基于Spring自动装配注解，这里不再需要初始化
}
}
/**
* Abstract controller tier base test class for TestNG.
*
* @author Bert Lee
* @version 2014-8-19
*/
@WebAppConfiguration("src/test/java") // 集成Web应用上下文
public abstract class AbstractControllerTestNGTest extends AbstractTestNGTest {
/**
* MVC mock
*/
protected MockMvc mockMvc;
/**
* Gets the tested controller.
*
* @return the controller that is tested
*/
protected abstract Object getController();
/**
* Setups the tested controller in MVC Mock environment.
*/
@BeforeClass(alwaysRun = true)
public void setup() {
this.mockMvc = MockMvcBuilders.standaloneSetup(this.getController()).build();
}
/**
* Mocks the GET request.
*
* @param url
* @param params
* @param expectedContent
* @throws Exception
*/
protected void getMock(String url, Object[] params, String expectedContent) throws Exception {
// 2. 构造GET请求
MockHttpServletRequestBuilder requestBuilder = MockMvcRequestBuilders
.get(url, params);
this.jsonRequestMock(requestBuilder, expectedContent);
}
/**
* Mocks the POST request.
*
* @param url
* @param paramsJson
* @param expectedContent
* @throws Exception
*/
protected void postMock(String url, String paramsJson, String expectedContent) throws Exception {
// 2. 构造POST请求
MockHttpServletRequestBuilder requestBuilder = MockMvcRequestBuilders
.post(url)
.content(paramsJson) // 设置request body请求体，服务于"@RequestBody"
;
this.jsonRequestMock(requestBuilder, expectedContent);
}
/**
* Mocks the request for "application/json;charset=UTF-8" media type (Content-Type).
*
* @param requestBuilder
* @param expectedContent
* @throws Exception
*/
private void jsonRequestMock(MockHttpServletRequestBuilder requestBuilder, String expectedContent) throws Exception {
// 2. 设置HTTP请求属性
requestBuilder.contentType(MediaType.APPLICATION_JSON)
.accept(MediaType.APPLICATION_JSON)
.characterEncoding(CharEncoding.UTF_8)
;
// 3. 定义期望响应行为
this.mockMvc.perform(requestBuilder)
.andDo(print()) // 打印整个请求与响应细节
.andExpect(status().isOk())
.andExpect(content().contentType(MediaType.APPLICATION_JSON))
.andExpect(content().string(expectedContent)) // 校验是否是期望的结果
;
}
}
5. 实现Controller与Service层的测试逻辑
/**
* Test for {@link UserController}.
*
* @author Bert Lee
* @version 2014-8-19
*/
public class UserControllerTest extends AbstractControllerTestNGTest {
// tested controller
@Autowired
private UserController userControllerTest;
// mocked service (被依赖的服务)
@Autowired
private UserQueryService userQueryService;
@Test(dataProvider = "getUserName")
public void getUserName(Object[] params, String userName, String expectedContent) throws Exception {
// 1. 定义"被依赖的服务"的方法行为
when(this.userQueryService.getUserName(anyLong())).thenReturn(userName);
this.getMock("/user/get_user_name?id={id}", params, expectedContent);
}
@DataProvider(name = "getUserName")
protected static final Object[][] getUserNameTestData() {
Object[][] testData = new Object[][] {
{ new Object[] { "23" }, "Bert Lee", "{\"name\":\"Bert Lee\"}" },
};
return testData;
}
@Test(dataProvider = "updateUserName")
public void updateUserName(String paramsJson, Integer result, String expectedContent) throws Exception {
// 1. 定义"被依赖的服务"的方法行为
when(this.userQueryService.updateUserName(anyLong(), anyString())).thenReturn(result);
this.postMock("/user/update_user_name", paramsJson, expectedContent);
}
@DataProvider(name = "updateUserName")
protected static final Object[][] updateUserNameTestData() {
Object[][] testData = new Object[][] {
{ "{\"id\":23,\"name\":\"Bert Lee\"}", 0, "{\"ret\":0,\"ret_msg\":\"ok\"}" },
};
return testData;
}
@Override
public Object getController() {
return this.userControllerTest;
}
}
/**
* Test for {@link UserQueryService}.
*
* @author Bert Lee
* @version 2014-7-25
*/
public class UserQueryServiceTest extends AbstractTestNGTest {
// tested service
@Autowired
private UserQueryService userQueryServiceTest;
// mocked service (被依赖的服务)
@Autowired
private UserService userService;
@Test(dataProvider = "getUserName")
public void getUserName(User user, String expected) {
// 1. 定义"被依赖的服务"的方法行为
when(userService.getUserInfo(anyLong())).thenReturn(user);
String userName = this.userQueryServiceTest.getUserName(3L);
assertEquals(userName, expected);
}
@DataProvider(name = "getUserName")
protected static final Object[][] getUserNameTestData() {
Object[][] testData = new Object[][] {
{ null, "" },
{ new User(3L, ""), "" },
{ new User(10L, "Edward Lee"), "Edward Lee" },
{ new User(23L, "李华刚@!~#$%^&"), "李华刚@!~#$%^&" },
};
return testData;
}
}
6. 定义XML bean配置文件，实现测试对象及被依赖的服务的自动注入
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="
http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.2.xsd ">
<bean id="userControllerTest" class="com.weibo.web.UserController" />
<!-- 被依赖的服务 -->
<bean id="userQueryService" class="org.mockito.Mockito" factory-method="mock">
<constructor-arg value="com.weibo.service.UserQueryService" />
</bean>
<bean id="userQueryServiceTest" class="com.weibo.service.impl.UserQueryServiceImpl" />
<!-- 被依赖的服务 -->
<bean id="userService" class="org.mockito.Mockito" factory-method="mock">
<constructor-arg value="com.weibo.service.UserService" />
</bean>
</beans>
7. 运行测试用例，OK！
7步搞定，挺简单的吧，O(∩_∩)O哈哈~
玩得开心！^_^
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