快速学习-SpringBoot整合Junit

5.2 SpringBoot整合Junit

5.2.1 添加Junit的起步依赖

<!--测试的起步依赖-->
<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-test</artifactId>
    <scope>test</scope>
</dependency>

5.2.2 编写测试类

package com.itheima.test;

import com.itheima.MySpringBootApplication;
import com.itheima.domain.User;
import com.itheima.mapper.UserMapper;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.test.context.junit4.SpringRunner;

import java.util.List;

@RunWith(SpringRunner.class)
@SpringBootTest(classes = MySpringBootApplication.class)
public class MapperTest {

    @Autowired
    private UserMapper userMapper;

    @Test
    public void test() {
        List<User> users = userMapper.queryUserList();
        System.out.println(users);
    }

}

其中，

SpringRunner继承自SpringJUnit4ClassRunner，使用哪一个Spring提供的测试测试引擎都可以

public final class SpringRunner extends SpringJUnit4ClassRunner 

@SpringBootTest的属性指定的是引导类的字节码对象

5.2.3 控制台打印信息