@toc

一、导入依赖

	<dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-test</artifactId>
      <version>5.0.3.RELEASE</version>
      <scope>test</scope>
    </dependency>


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

二、测试(注解方式)

我们为了方便，写一个测试的父类，让其他测试类继承这个父类就行，不用每次都加配置了。

package com.ssm.test;

import org.junit.runner.RunWith;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;

//@RunWith是JUnit的一个注解, 用来告诉JUnit不要使用内置的方式进行单元测试, 而应该使用指定的类做单元测试 对于Spring单元测试总是要使用SpringJUnit4ClassRunner.class
@RunWith(SpringJUnit4ClassRunner.class)
//告诉junit spring配置文件
//如果有多个配置文件他的value是接受一个String数组 String支持通配符
//@ContextConfiguration({"classpath:application.xml","classpath:spring-mvc.xml"})
@ContextConfiguration(locations = {"classpath:applicationContext.xml"})
public class TestParent{

}

测试子类

package com.ssm.test;
import com.ssm.dao.UserInfoDao;
import org.junit.Test;
import org.springframework.beans.factory.annotation.Autowired;


public class userInfoTest extends TestParent{

    @Autowired
    UserInfoDao userInfoDao;	//数据访问层接口
    @Test
    public void testUserInfo(){
        System.out.println(userInfoDao.selectUserInfoById("001"));
    }
}

测试结果

三、测试(非注解)

package com.ssm.test;

import com.ssm.dao.UserInfoDao;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

public class test1 {
    public static void main(String[] args) {
        ApplicationContext context=new ClassPathXmlApplicationContext("applicationContext.xml");
        UserInfoDao userInfoDao=context.getBean(UserInfoDao.class);
        System.out.println(userInfoDao.selectUserInfoById("001"));
    }
}

测试结果

四、总结

1、@RunWith和@ContextConfiguration注解

@RunWith就是一个运行器

@RunWith(JUnit4.class)就是指用JUnit4来运行

@RunWith(SpringJUnit4ClassRunner.class),让测试运行于Spring测试环境

@RunWith(Suite.class)的话就是一套测试集合，

@ContextConfiguration Spring整合JUnit4测试时，使用注解引入多个配置文件

单个文件

@ContextConfiguration(Locations=“classpath：applicationContext.xml”)
@ContextConfiguration(classes = SimpleConfiguration.class)

多个文件时，可用{}

@ContextConfiguration(locations = { “classpath:spring1.xml”,
“classpath:spring2.xml” })

参考文章：

• https://blog.csdn.net/qq_42365082/article/details/81060076

• https://blog.csdn.net/weixin_44012722/article/details/105670830?ops_request_misc=%257B%2522request%255Fid%2522%253A%2522161829297516780262563011%2522%252C%2522scm%2522%253A%252220140713.130102334…%2522%257D&request_id=161829297516780262563011&biz_id=0&utm_medium=distribute.pc_search_result.none-task-blog-2~all~sobaiduend~default-2-105670830.first_rank_v2_pc_rank_v29&utm_term=ssm%E6%B5%8B%E8%AF%95%E7%B1%BB

• https://blog.csdn.net/qq_43032061/article/details/87972144?ops_request_misc=%257B%2522request%255Fid%2522%253A%2522161829297516780262563011%2522%252C%2522scm%2522%253A%252220140713.130102334…%2522%257D&request_id=161829297516780262563011&biz_id=0&utm_medium=distribute.pc_search_result.none-task-blog-2~all~sobaiduend~default-1-87972144.first_rank_v2_pc_rank_v29&utm_term=ssm%E6%B5%8B%E8%AF%95%E7%B1%BB