Spring Boot MockMVC

1, 如果我们只是想要mock某一组件可以这样：

• 依赖pom.xml

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
	<modelVersion>4.0.0</modelVersion>
	<groupId>com.zws</groupId>
	<artifactId>springmvc-test</artifactId>
	<version>0.0.1-SNAPSHOT</version>

	<parent>
		<groupId>org.springframework.boot</groupId>
		<artifactId>spring-boot-starter-parent</artifactId>
		<version>2.0.4.RELEASE</version>
	</parent>
	
	<dependencies>
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-web</artifactId>
		</dependency>
		
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-test</artifactId>
			<scope>test</scope>
		</dependency>
		
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-test-autoconfigure</artifactId>
		</dependency>
		
		<dependency>
		    <groupId>com.alibaba</groupId>
		    <artifactId>fastjson</artifactId>
		    <version>1.2.49</version>
		</dependency>
	</dependencies>
</project>

• Application启动类

package com.zws.mvntest;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

@SpringBootApplication
public class Application {

	public static void main(String[] args) {
		SpringApplication.run(Application.class, args);
	}
}

• UserService

package com.zws.mvntest.service;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import com.zws.mvntest.bean.User;
import com.zws.mvntest.dao.UserDao;

@Service
public class UserService {
	
	@Autowired
	private UserDao userDao;

	public User getUserById(Long id) {
		return userDao.getUserById(id);
	}
}

• UserDao

package com.zws.mvntest.dao;


import com.zws.mvntest.bean.User;

public interface UserDao {

	User getUserById(Long id);
}

• 测试类UserServiceTest

package com.zws.mvntest;

import org.junit.Assert;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.mockito.BDDMockito;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.boot.test.mock.mockito.MockBean;
import org.springframework.test.context.junit4.SpringRunner;

import com.zws.mvntest.bean.User;
import com.zws.mvntest.dao.UserDao;
import com.zws.mvntest.service.UserService;

@RunWith(SpringRunner.class)
@SpringBootTest
public class UserServiceTest {
	
	@MockBean
	private UserDao userDao;
	
	@Autowired
	private UserService userService;

	@Test
	public void getUserById() throws Exception {
		Long id = 1L;
		User user = new User();
		user.setName("张三0000");
		user.setGender("男");
		
		BDDMockito.given(this.userDao.getUserById(id)).willReturn(user);
		
		User u = this.userService.getUserById(1L);
		System.out.println(u);
		
		Assert.assertNotNull(u);
		Assert.assertEquals(u.getName(), user.getName());
		Assert.assertEquals(u.getGender(), user.getGender());
	}

}

这里UserDao没有实现所以mock，用到了@MockBean注解。

mock mvc

• UserController

package com.zws.mvntest.controller;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;

import com.alibaba.fastjson.JSON;
import com.zws.mvntest.bean.User;
import com.zws.mvntest.service.UserService;

@RestController
public class UserController {
	
	@Autowired
	private UserService userService;

	@GetMapping("/user")
	public String getUser() {
		User user = userService.getUserById(1L);
		
		return JSON.toJSONString(user);
	}
}

• 测试类UserControllerTest

package com.zws.mvntest;

import org.junit.Test;
import org.junit.runner.RunWith;
import org.mockito.BDDMockito;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.autoconfigure.web.servlet.AutoConfigureMockMvc;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.boot.test.mock.mockito.MockBean;
import org.springframework.http.MediaType;
import org.springframework.test.context.junit4.SpringRunner;
import org.springframework.test.web.servlet.MockMvc;
import org.springframework.test.web.servlet.RequestBuilder;
import org.springframework.test.web.servlet.ResultActions;
import org.springframework.test.web.servlet.ResultMatcher;
import org.springframework.test.web.servlet.request.MockMvcRequestBuilders;
import org.springframework.test.web.servlet.result.MockMvcResultMatchers;

import com.zws.mvntest.bean.User;
import com.zws.mvntest.dao.UserDao;

@RunWith(SpringRunner.class)
@SpringBootTest
@AutoConfigureMockMvc
public class UserControllerTest {

	@Autowired
	private MockMvc mvc;
	
	@MockBean
	private UserDao userDao;

	@Test
	public void exampleTest() throws Exception {
		Long id = 1L;
		
		BDDMockito.given(this.userDao.getUserById(id)).willReturn(new User("张三", "男1"));
		
		RequestBuilder builder = MockMvcRequestBuilders.get("/user").accept(MediaType.TEXT_HTML);
		ResultActions result = this.mvc.perform(builder);
		
		result.andExpect(MockMvcResultMatchers.status().isOk());
		
		String context = "{\"gender\":\"男1\",\"name\":\"张三\"}";
		ResultMatcher matcher = MockMvcResultMatchers.content().string(context);
		result.andExpect(matcher);
	}
}

参考Spring Boot官方文档，记录下这个mock方式。