单元测试二、对controller层

1.加入pom依赖

<dependency>
     <groupId>junit</groupId>
     <artifactId>junit</artifactId>
     <version>4.12</version>
     <scope>test</scope>
</dependency>

2.在application.properties加入扫描文件

<context:component-scan base-package="com.junittestdemo.demo" />

3. 编写controller的类

package com.junittestdemo.demo.controller;

import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

/**
 * package:com.junittestdemo.demo.controller
 *
 * @date:2020/4/16 17:20
 * @author:Yaoxiaoming
 **/
@RestController
public class StudentContoller {
    @RequestMapping("/hello")
    public String Helloworld(){
        return "hello king";
    }
}

4.编写controller测试类

package com.junittestdemo.demo.controller;

import org.junit.jupiter.api.BeforeEach;
import org.junit.jupiter.api.Test;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.http.HttpMethod;
import org.springframework.test.web.servlet.MockMvc;
import org.springframework.test.web.servlet.MvcResult;
import org.springframework.test.web.servlet.request.MockMvcRequestBuilders;
import org.springframework.test.web.servlet.result.MockMvcResultMatchers;
import org.springframework.test.web.servlet.setup.MockMvcBuilders;

import static org.springframework.test.web.servlet.result.MockMvcResultHandlers.print;

/**
 * package:com.junittestdemo.demo.controller
 *
 * @date:2020/4/17 8:37
 * @author:Yaoxiaoming
 **/
@SpringBootTest
class StudentContollerTest {

    //mock对象
    private MockMvc mockMvc;

    @BeforeEach
    void setUp() {
        mockMvc = MockMvcBuilders.standaloneSetup(new StudentContoller()).build();
    }

    @Test
    void helloworld() {
        try {
            MvcResult result = mockMvc.perform(
                    MockMvcRequestBuilders.request(HttpMethod.GET, "/hello"))
                    .andExpect(MockMvcResultMatchers.status().isOk())
                    .andDo(print())
                    .andReturn();;
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}

5.运行以后，就可以访问hello world了