Spring5 new features-JUnit5

When completing the test, it is often necessary to obtain Spring managed classes from the ApplicationContext object, but this is bloated due to repeated calls, as shown below:

public class testService {
    
    
    @Test
    public void testAccount(){
    
    
        ApplicationContext context= new ClassPathXmlApplicationContext("bean1.xml");
        UserService userService=context.getBean("userService",UserService.class);
        userService.accountMoney();
    }
    @Test
    public void testAccount2(){
    
    
        ApplicationContext context=
                new AnnotationConfigApplicationContext(txConfig.class);
        //注意使用子接口AnnotationConfigApplicationContext
        UserService userService=context.getBean("userService",UserService.class);
        userService.accountMoney();
    }
}

The process of obtaining objects can be replaced by annotations:

1. Spring integrates JUnit4

(1) The first step is to introduce Spring related dependencies for testing

(2) Create a test class with @RunWith for unit test framework, @ContextConfiguration to load configuration files

@RunWith(SpringJUnit4ClassRunner.class)      //单元测试框架
@ContextConfiguration("classpath:bean1.xml") //加载配置文件
public class JUnitTest {
    
    
    @Autowired  //注入属性
    private UserService userService;
    @Test       //测试
    public void test1(){
    
    
        userService.accountMoney();
    }
}

2. Spring integrates JUnit5

(1) Introduce the Jar package of JUnit5

(2) Create a test class with @ExtendWith for unit testing framework, @ContextConfiguration to load configuration files

package com.LinXiaoDe.spring5.test;

import com.LinXiaoDe.spring5.service.UserService;
import org.junit.jupiter.api.Test;
import org.junit.jupiter.api.extension.ExtendWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit.jupiter.SpringExtension;

@ExtendWith(SpringExtension.class)
@ContextConfiguration("classpath:bean1.xml")
public class JUnit5Test {
    
    
    @Autowired  //注入属性
    private UserService userService;
    @Test       //测试
    public void test1(){
    
    
        userService.accountMoney();
    }
}

(3) Use composite annotation SpringJUnitConfig to replace the above two annotations to complete the integration

package com.LinXiaoDe.spring5.test;

import com.LinXiaoDe.spring5.service.UserService;
import org.junit.jupiter.api.Test;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.test.context.junit.jupiter.SpringJUnitConfig;

@SpringJUnitConfig(locations = "classpath:bean1.xml")
public class JUnit5test2 {
    
    
    @Autowired
    private UserService userService;
    @Test
    public void test(){
    
    
        userService.accountMoney();
    }
}