08.利用Easymock测试简单的servlet

1.首先导入需要使用的servlet的jar包

接下来我们编写一个登陆的servlet

package com.fjnu.service;

import java.net.HttpRetryException;

import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpSession;

import com.fjnu.model.User;

public class LoginServlet  extends HttpServlet{
    
    public boolean login(HttpServletRequest rep){
        
        //首先获得登陆的session
        HttpSession session = rep.getSession();
        if(session == null){
            return false;
        }
        User user = (User) session.getAttribute("username");
        if(user == null){
            return false;
        }
        return true;
    }

}

我们来编写测试代码

package com.fjnu.service;

import static org.junit.Assert.*;
import static org.easymock.EasyMock.*;  

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpSession;

import org.junit.Before;
import org.junit.Test;

import com.fjnu.model.User;
public class TestHttpLoginByEasyMock {
    private HttpServletRequest req;
    private HttpSession session;
    private LoginServlet servlet ;
    
    @Before
    public void setUp(){
        req = createStrictMock(HttpServletRequest.class);
        session = createStrictMock(HttpSession.class);
        servlet = new LoginServlet();
    }
    
    /*
     * 登陆操作有三个测试场景
     * 第一个是登陆session为null
     * 第二个是登陆获得用户名不存在
     * 第三个是登陆成功
     * */

    @Test
    public void testSeesionIsNull(){
        expect(req.getSession()).andReturn(null);
        replay(req,session);
        //执行登陆操作返回值是false
        assertFalse(servlet.login(req));
        verify(req,session);
    }
    
    @Test
    public void testUserIsNull(){
        expect(req.getSession()).andReturn(session);
        expect(session.getAttribute("username")).andReturn(null);
        replay(req,session);
        //执行登陆操作返回值是false
        assertFalse(servlet.login(req));
        verify(req,session);
    }
    
    @Test
    public void testUserExits(){
        expect(req.getSession()).andReturn(session);
        expect(session.getAttribute("username")).andReturn(new User());
        replay(req,session);
        //执行登陆操作返回值是false
        assertTrue(servlet.login(req));
        verify(req,session);
    }
}

视频下载地址

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