一、pom.xml

	<properties>
        <maven.compiler.source>11</maven.compiler.source>
        <maven.compiler.target>11</maven.compiler.target>
    </properties>

    <parent>
        <groupId>org.springframework.boot</groupId>
        <version>2.4.4</version>
        <artifactId>spring-boot-starter-parent</artifactId>
    </parent>

    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-test</artifactId>
            <version>2.4.4</version>
            <scope>test</scope>
        </dependency>
        
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <scope>test</scope>
        </dependency>
        
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-test</artifactId>
            <version>5.3.5</version>
            <scope>test</scope>
        </dependency>
    </dependencies>

二、测试代码

import org.junit.Test;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.test.context.ContextConfiguration;


@SpringBootTest
//告诉springboot测试哪个类
//@ContextConfiguration(classes = HelloWorldSpringbootApplication.class)
public class HelloWorldTests {

    @Test
    public void printHello(){
        System.out.println("hello world,come on");
    }
}