Question

我有一个查找查询参数并返回布尔值的函数：

  public static Boolean getBooleanFromRequest(HttpServletRequest request, String key) {
        Boolean keyValue = false;
        if(request.getParameter(key) != null) {
            String value = request.getParameter(key);
            if(keyValue == null) {
                keyValue = false;
            }
            else {
                if(value.equalsIgnoreCase("true") || value.equalsIgnoreCase("1")) {
                    keyValue = true;
                }
            }
        }
        return keyValue;
    }

我的pom.xml中有junit和easymock，如何模拟HttpServletRequest？

Answer 1

使用一些模拟框架，例如Mockito或JMock具有此类对象的模拟能力。

在Mockito，你可以做嘲笑：

 HttpServletRequest  mockedRequest = Mockito.mock(HttpServletRequest.class);

有关Mockito的详细信息，请参阅Mockito网站上的How do I drink it?。

在JMock中，你可以做模拟：

 Mockery context = new Mockery();
 HttpServletRequest  mockedRequest = context.mock(HttpServletRequest.class);

有关jMock的详细信息，请参阅：jMock - Getting Started

Answer 2

HttpServletRequest与其他任何接口非常相似，因此您可以按照EasyMock Readme

进行模拟

以下是如何对getBooleanFromRequest方法进行单元测试的示例

// static import allows for more concise code (createMock etc.)
import static org.easymock.EasyMock.*;

// other imports omitted

public class MyServletMock
{
   @Test
   public void test1()
   {
      // Step 1 - create the mock object
      HttpServletRequest req = createMock(HttpServletRequest.class);

      // Step 2 - record the expected behavior

      // to test true, expect to be called with "param1" and if so return true
      // Note that the method under test calls getParameter twice (really
      // necessary?) so we must relax the restriction and program the mock
      // to allow this call either once or twice
      expect(req.getParameter("param1")).andReturn("true").times(1, 2);

      // program the mock to return false for param2
      expect(req.getParameter("param2")).andReturn("false").times(1, 2);

      // switch the mock to replay state
      replay(req);

      // now run the test.  The method will call getParameter twice
      Boolean bool1 = getBooleanFromRequest(req, "param1");
      assertTrue(bool1);
      Boolean bool2 = getBooleanFromRequest(req, "param2");
      assertFalse(bool2);

      // call one more time to watch test fail, just to liven things up
      // call was not programmed in the record phase so test blows up
      getBooleanFromRequest(req, "bogus");

   }
}

Answer 3

这是一个老话题......但问题仍然存在。

另一个不错的选择是Spring框架中的MockServiceRequest和MockServiceResponse：

http://docs.spring.io/spring/docs/2.0.x/api/org/springframework/mock/web/package-summary.html

Answer 4

我不知道easymock，但是书'Unit Testing in Java: How Tests Drive the Code' by Johannes Link包含了如何使用他构建虚拟对象的库来测试Servlet的解释。

这本书的配套网站现已不复存在（出版公司改变某些内容......）the companion site from the original german publication is still up。从中you can download the definitions of all the dummy objects。

Answer 5

看看Mockrunner：http://mockrunner.sourceforge.net/

它有很多易于使用的Java EE模拟，包括HttpServletRequest和HttpServletResponse。

如何模拟HttpServletRequest？

5 个答案: