spring6整合JUnit5

1. Spring对JUnit4的支持   136

准备工作：

pom.xml

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>com.powernode</groupId>
    <artifactId>course32</artifactId>
    <version>1.0-SNAPSHOT</version>

    <packaging>jar</packaging>

    <!--仓库-->
    <repositories>
        <!--spring里程碑版本的仓库-->
        <repository>
            <id>repository.spring.milestone</id>
            <name>Spring Milestone Repository</name>
            <url>https://repo.spring.io/milestone</url>
        </repository>
    </repositories>

    <dependencies>
        <!--spring context依赖-->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-context</artifactId>
            <version>6.0.0-M2</version>
        </dependency>

        <!--spring对junit支持的依赖  136-->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-test</artifactId>
            <!--这个版本spring6，既支持JUnit4又支持JUnit5.-->
            <version>6.0.0-M2</version>
        </dependency>


        <!--junit4依赖-->
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.13.2</version>
            <scope>test</scope>
        </dependency>

    </dependencies>

    <properties>
        <maven.compiler.source>17</maven.compiler.source>
        <maven.compiler.target>17</maven.compiler.target>
    </properties>

</project>

spring.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:context="http://www.springframework.org/schema/context"
       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
                           http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd">
    <context:component-scan base-package="com.powernode.spring6.bean"/>
</beans>

User

package com.powernode.spring6.bean;

import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Component;

/**
 * 一个普通的bean
 **/
@Component
public class User {

    @Value("张三")
    private String name;

    @Override
    public String toString() {
        return "User{" +
                "name='" + name + '\'' +
                '}';
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public User() {
    }

    public User(String name) {
        this.name = name;
    }
}

测试SpringJUnit4Test

Spring提供的方便主要是这几个注解：

@RunWith(SpringJUnit4ClassRunner.class)

@ContextConfiguration("classpath:spring.xml")

在单元测试类上使用这两个注解之后，在单元测试类中的属性上可以使用@Autowired。比较方便。

package com.powernode.spring6.test;

import com.powernode.spring6.bean.User;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;

/**
 * Spring对JUnit4的支持   136
 **/
@RunWith(SpringJUnit4ClassRunner.class)  //这个是junit里的注解
@ContextConfiguration("classpath:spring.xml")//这个是spring框架里的注解
public class SpringJUnit4Test {

    @Autowired
    private User user; //注入User类

    @Test
    public void testUser(){
        /*ApplicationContext applicationContext = new ClassPathXmlApplicationContext("spring.xml");
        User user = applicationContext.getBean("user", User.class);*/
        System.out.println(user.getName());
    }

    @Test
    public void testUser2(){
        /*ApplicationContext applicationContext = new ClassPathXmlApplicationContext("spring.xml");
        User user = applicationContext.getBean("user", User.class);*/
        System.out.println(user.getName());
    }

    @Test
    public void testUser3(){
       /* ApplicationContext applicationContext = new ClassPathXmlApplicationContext("spring.xml");
        User user = applicationContext.getBean("user", User.class);*/
        System.out.println(user.getName());
    }

}

2.  Spring对JUnit5的支持  137

引入JUnit5的依赖，Spring对JUnit支持的依赖还是：spring-test，如下：

pom.xml

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>com.powernode</groupId>
    <artifactId>spring6-015-junit</artifactId>
    <version>1.0-SNAPSHOT</version>
    <packaging>jar</packaging>

    <!--仓库-->
    <repositories>
        <!--spring里程碑版本的仓库-->
        <repository>
            <id>repository.spring.milestone</id>
            <name>Spring Milestone Repository</name>
            <url>https://repo.spring.io/milestone</url>
        </repository>
    </repositories>

    <dependencies>
        <!--spring context依赖-->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-context</artifactId>
            <version>6.0.0-M2</version>
        </dependency>
        <!--spring对junit的支持相关依赖-->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-test</artifactId>
            <version>6.0.0-M2</version>
        </dependency>
        <!--junit5依赖-->
        <dependency>
            <groupId>org.junit.jupiter</groupId>
            <artifactId>junit-jupiter</artifactId>
            <version>5.9.0</version>
            <scope>test</scope>
        </dependency>
    </dependencies>

    <properties>
        <maven.compiler.source>17</maven.compiler.source>
        <maven.compiler.target>17</maven.compiler.target>
    </properties>

</project>

测试SpringJUnit5Test

package com.powernode.spring6.test;

import com.powernode.spring6.bean.User;
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;

/**
 * Spring对JUnit5的支持  137
 **/
@ExtendWith(SpringExtension.class)
@ContextConfiguration("classpath:spring.xml")
public class SpringJUnit5Test {

    @Autowired
    private User user;

    @Test
    public void testUser(){
        System.out.println(user.getName());
    }
}