junit4 单元测试

1.所需jar包

下载地址：http://search.maven.org/

搜索junit-4.12-beta-1

　　aspectjweaver-1.8.2

　　spring-test-4.0.6.RELEASE

2.3中测试形式

（1）最古老的

package sy.test;



import org.junit.Test;

import org.junit.runner.RunWith;

import org.springframework.beans.factory.annotation.Autowired;

import org.springframework.beans.factory.annotation.Qualifier;

import org.springframework.context.ApplicationContext;

import org.springframework.context.support.ClassPathXmlApplicationContext;

import org.springframework.test.context.ContextConfiguration;

import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;



import sy.model.User;

import sy.service.IUserService;



//@RunWith(SpringJUnit4ClassRunner.class)

//@ContextConfiguration(locations={"classpath:spring.xml","classpath:spring-mybatis.xml"})

public class TestMybatis {

    

    //使用test注解

    @Test

    public void test1(){

        //读取配置文件，如有多个，用逗号隔开

        ApplicationContext ctf = 

                new ClassPathXmlApplicationContext(new String[]{"spring.xml","spring-mybatis.xml"});

        //获取userService实例

        IUserService userService = (IUserService) ctf.getBean("userService");

        User user = userService.getUserById("0");

        System.out.println(user);

    }

    

}

　　(2).如果有多个test，则spring每次都要去加载读取上下文，很浪费资源，因此

package sy.test;



import org.junit.Before;

import org.junit.Test;

import org.junit.runner.RunWith;

import org.springframework.beans.factory.annotation.Autowired;

import org.springframework.beans.factory.annotation.Qualifier;

import org.springframework.context.ApplicationContext;

import org.springframework.context.support.ClassPathXmlApplicationContext;

import org.springframework.test.context.ContextConfiguration;

import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;



import sy.model.User;

import sy.service.IUserService;



//@RunWith(SpringJUnit4ClassRunner.class)

//@ContextConfiguration(locations={"classpath:spring.xml","classpath:spring-mybatis.xml"})

public class TestMybatis {

    

    private IUserService userService;

    private ApplicationContext ctf;

    @Before

    public void before(){

        ctf = new ClassPathXmlApplicationContext(new String[]{"spring.xml","spring-mybatis.xml"});

         userService = (IUserService) ctf.getBean("userService");

    }

    

    //使用test注解

    @Test

    public void test1(){

        User user = userService.getUserById("0");

        System.out.println(user);

    }

    

    //使用autowired注解

    @Autowired

    public void setUserService(IUserService userService) {

        this.userService = userService;

    }

    

    

}

@Before注解会在所有test测试之前执行

(3)spring与junit整合

package sy.test;



import org.junit.Before;

import org.junit.Test;

import org.junit.runner.RunWith;

import org.springframework.beans.factory.annotation.Autowired;

import org.springframework.beans.factory.annotation.Qualifier;

import org.springframework.context.ApplicationContext;

import org.springframework.context.support.ClassPathXmlApplicationContext;

import org.springframework.test.context.ContextConfiguration;

import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;



import sy.model.User;

import sy.service.IUserService;



@RunWith(SpringJUnit4ClassRunner.class)

@ContextConfiguration(locations={"classpath:spring.xml","classpath:spring-mybatis.xml"})

public class TestMybatis {

    

    private IUserService userService;

    

    //使用test注解

    @Test

    public void test1(){

        User user = userService.getUserById("0");

        System.out.println(user);

    }

    

    //使用autowired注解

    @Autowired

    public void setUserService(IUserService userService) {

        this.userService = userService;

    }

    

    

}