【Junit】Junit 与 SpringBoot 整合测试

　　本章介绍使用 Junit4 测试 SpringBoot，关于 Junit4 的基本使用 参考：【Junit】Junit快速入门

　　关于SpringBoot的使用，参考：【SpringBoot】SpringBoot快速入门（一）

一、项目框架

1、搭建一个Maven项目，引入 springboot依赖 和 junit依赖

<?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.test.junit</groupId>
    <artifactId>test-junit-springboot</artifactId>
    <version>1.0-SNAPSHOT</version>

    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.1.8.RELEASE</version>
    </parent>

    <properties>
        <maven.compiler.source>8</maven.compiler.source>
        <maven.compiler.target>8</maven.compiler.target>
    </properties>

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


    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
                <version>2.1.8.RELEASE</version>
            </plugin>
        </plugins>
    </build>

</project>

2、新建一个配置类

package com.test.junit.springboot.config;

import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

import java.util.Date;

@Configuration
public class MyConfig {
    @Bean
    public Date date(){
        return new Date();
    }
}

3、SpringBoot项目入口

package com.test.junit.springboot;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.context.ConfigurableApplicationContext;

@SpringBootApplication
public class Application {
    public static void main(String[] args) {
        SpringApplication.run(Application.class);
    }
}

二、使用Junit4 测试 SpringBoot

　　新建一个测试类

package com.test.junit.springboot;

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.context.ApplicationContext;
import org.springframework.test.context.junit4.SpringRunner;

import java.util.Date;

@RunWith(SpringRunner.class)
@SpringBootTest
public class TestApplication {

    @Autowired
    ApplicationContext context;

    @Test
    public void contextLoads() {
        Date date = (Date) context.getBean("date");
        System.out.println(date);
    }
}