junit单元测试之多线程

问题: 在junit的单元测试中,用thread创建多个线程时,单元测试并不会等待主线程下启动的新线程是否执行结束,只要主线程结束完成,单元测试就会关闭,导致主线程中启动的新线程不能顺利执行完!

简单的解决办法: 在主线程中sleep,等待子线程的结束!

部分示例代码

package TestRedis;

import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;

import com.esoft.invest.service.AutoInvestJobService;

import Test.MyThread;

@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(locations = "classpath:application-context.xml")
public class TestRedis {
	
	@Autowired
	private AutoInvestJobService autoInvestJobService;
	
	//多线程测试并发
	@Test
	public void testThread() {
		try {
			System.out.println("test当前线程:" + Thread.currentThread().getName());
			for (int i = 0; i < 5; i++) {
				Thread.sleep(200);
				long id = 20180625000003l;
				String loanId = Long.toString(id+i);
				Thread t = new MyThread(this.autoInvestJobService,loanId);
				t.start();
			}
			// junit单元测试并不支持多线程,所以要想测试多线程时,在主线程中等待,以确保子线程能够执行完.
			Thread.sleep(520000);
		} catch (InterruptedException e) {
			e.printStackTrace();
		}
	}
	
}

package Test;

import com.esoft.invest.service.AutoInvestJobService;
import com.esoft.invest.service.InvestService;

/**  
 * 类说明   
 *  
 * @author lv617  
 * @date 2018年5月24日 上午9:59:51    
 */
public class MyThread extends Thread {
	
	private InvestService investService;
	private AutoInvestJobService autoInvestJobService;
	private String loanId;
	
	//构造方法传参
	public MyThread(AutoInvestJobService autoInvestJobService) {
		this.autoInvestJobService = autoInvestJobService;
	}
	//构造方法传参
	public MyThread(AutoInvestJobService autoInvestJobService, String loanId) {
		this.autoInvestJobService = autoInvestJobService;
		this.loanId = loanId;
	}
	//构造方法传参
	public MyThread(InvestService investService) {
		this.investService = investService;
	}
	
	@Override
	public void run(){
		System.err.println("新线程:" + Thread.currentThread().getName() + "----start----");
		
		// TODO
		this.autoInvestJobService.executeAutoInvest(this.loanId, true, "true", "all");
		
		System.err.println("新线程:" + Thread.currentThread().getName() + "----end----");
		
	}
}