1.需要在pom.xml中引入spring-boot-starter-test

org.springframework.boot spring-boot-starter-test

2.单元测试代码

两个关键的注解

@RunWith(SpringRunner.class)

@SpringBootTest

package com.niugang.test;import java.util.List;import javax.annotation.Resource;import org.junit.Test;import org.junit.runner.RunWith;import org.springframework.boot.test.context.SpringBootTest;import org.springframework.test.context.junit4.SpringRunner;import com.niugang.entity.User;import com.niugang.service.UserService;@RunWith(SpringRunner.class)@SpringBootTestpublic class TestUser {@Resource private UserService userService;@Testpublic void test1(){List list = userService.queryList(null);System.out.println("集合大小："+list.size());}}