再写一个测试类,来演示以上程序
时间: 2024-02-25 07:58:30 浏览: 21
好的,下面是一个测试类,来演示以上程序:
```java
public class TestRandomIntSequence {
public static void main(String[] args) {
IntSequence randomSeq = new RandomIntSequence();
for (int i = 1; i <= 10; i++) {
System.out.println("Element " + i + ": " + randomSeq.next());
}
}
}
```
在这个测试类中,我们创建了一个RandomIntSequence对象,然后利用for循环来输出数列中的前10个元素。每次调用next()方法,都会返回一个随机生成的两位整数。
你可以将以上代码保存为TestRandomIntSequence.java文件,并在命令行中编译并运行,来查看输出结果。
相关问题
编写一个servlet程序,再写一个junit测试类测试它
以下是一个简单的Servlet程序示例:
```java
import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
public class MyServlet extends HttpServlet {
public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
response.setContentType("text/html");
PrintWriter out = response.getWriter();
out.println("<html>");
out.println("<head><title>My Servlet</title></head>");
out.println("<body>");
out.println("<h1>Hello World!</h1>");
out.println("</body></html>");
}
}
```
以下是一个简单的Junit测试类示例:
```java
import static org.junit.Assert.assertEquals;
import java.io.IOException;
import java.io.PrintWriter;
import java.io.StringWriter;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.junit.Before;
import org.junit.Test;
import org.mockito.Mock;
import org.mockito.MockitoAnnotations;
public class MyServletTest {
@Mock
HttpServletRequest request;
@Mock
HttpServletResponse response;
@Before
public void setUp() {
MockitoAnnotations.initMocks(this);
}
@Test
public void test() throws ServletException, IOException {
StringWriter stringWriter = new StringWriter();
PrintWriter writer = new PrintWriter(stringWriter);
// 设置Mock对象的行为
when(response.getWriter()).thenReturn(writer);
// 调用Servlet
new MyServlet().doGet(request, response);
// 验证结果
String expected = "<html><head><title>My Servlet</title></head><body><h1>Hello World!</h1></body></html>";
assertEquals(expected, stringWriter.toString());
}
}
```
该测试类使用Mockito框架模拟HttpServletRequest和HttpServletResponse对象,并使用Junit框架测试doGet()方法的输出是否与预期的相同。
写一个servlet程序,再写一个简单的junit测试类测试它
以下是一个简单的 servlet 程序示例:
```java
import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;
public class HelloWorldServlet extends HttpServlet {
public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
response.setContentType("text/html");
PrintWriter out = response.getWriter();
out.println("<html><head><title>Hello World Servlet</title></head><body>");
out.println("<h1>Hello World!</h1>");
out.println("</body></html>");
}
}
```
以下是一个简单的 JUnit 测试类,用于测试上述 servlet 程序:
```java
import static org.junit.Assert.assertEquals;
import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.junit.Before;
import org.junit.Test;
import org.mockito.Mock;
import org.mockito.MockitoAnnotations;
public class HelloWorldServletTest {
@Mock
private HttpServletRequest request;
@Mock
private HttpServletResponse response;
@Before
public void setUp() throws Exception {
MockitoAnnotations.initMocks(this);
}
@Test
public void testDoGet() throws ServletException, IOException {
StringWriter stringWriter = new StringWriter();
PrintWriter writer = new PrintWriter(stringWriter);
HelloWorldServlet servlet = new HelloWorldServlet();
assertEquals("text/html", response.getContentType());
writer.flush();
assertEquals("<html><head><title>Hello World Servlet</title></head><body><h1>Hello World!</h1></body></html>\n", stringWriter.toString());
}
}
```
在此示例中,使用 Mockito 模拟了 HttpServletRequest 和 HttpServletResponse 对象,以便在测试中使用它们。测试方法验证 servlet 的 doGet() 方法是否正确生成了 HTML 响应。
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