你如何为java servlet编写单元测试？

import org.junit.jupiter.api.Test;
import org.mockito.Mockito;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;

import static org.junit.jupiter.api.Assertions.*;
import static org.mockito.Mockito.*;

public class MyServletTest {

    @Test
    public void testDoGet() throws ServletException, IOException {
        // 创建要测试的Servlet实例
        MyServlet servlet = new MyServlet();

        // 模拟请求和响应对象
        HttpServletRequest request = mock(HttpServletRequest.class);
        HttpServletResponse response = mock(HttpServletResponse.class);

        // 调用Servlet的doGet方法
        servlet.doGet(request, response);

        // 验证响应
        verify(response).setStatus(HttpServletResponse.SC_OK);
        verify(response).getWriter().println("Hello, World!");
    }
}