带有模拟数据层的JUnit RESTeasy服务......如何模拟它?

时间:2012-05-15 02:16:57

标签: junit mocking resteasy

我正在尝试为RESTeasy Web服务编写一个JUnit测试用例。我想为此使用RESTeasy MockDispatcherFactory,而不依赖于任何数据访问层。

在我以前的测试用例创作中,我使用Mockito来模拟数据访问,但是我在使用RESTeasy的MockDispatcherFactory时遇到了麻烦......

服务类:

import javax.ws.rs.GET;
import javax.ws.rs.Path;
import javax.ws.rs.Produces;
import javax.ws.rs.core.MediaType;

@Path("")
public class Service {
private StubDao stubDao;
    public Service (){
        this.stubDao = new StubDao();
    }

    public Service (StubDao stubDao){
        this.stubDao = stubDao;
    }

    @GET
    @Produces(MediaType.TEXT_HTML)
    public String get(){
        return stubDao.getTheValue();
    }
}

数据访问:

public class StubDao {
    private String value;

    public StubDao(){

    }

    public String getTheValue(){
        //Stubbed Data Access
        return value;
    }

    public void setTheValue(String v){
        this.value = v;
    }
}

单元测试:

import java.net.URISyntaxException;

import junit.framework.Assert;

import org.jboss.resteasy.core.Dispatcher;
import org.jboss.resteasy.mock.MockDispatcherFactory;
import org.jboss.resteasy.mock.MockHttpRequest;
import org.jboss.resteasy.mock.MockHttpResponse;
import org.jboss.resteasy.plugins.server.resourcefactory.POJOResourceFactory;
import org.junit.Test;


public class TestService {
@Test
public void testService() throws URISyntaxException{

        POJOResourceFactory factory = new POJOResourceFactory(Service.class);
    //I Need to use Mockito to mock the StubDao object!!!       

    Dispatcher dispatcher = MockDispatcherFactory.createDispatcher();
    dispatcher.getRegistry().addResourceFactory(factory); 

        MockHttpRequest request = MockHttpRequest.get("");
    MockHttpResponse response = new MockHttpResponse();

    //here my exception is thrown
    dispatcher.invoke(request, response);

    System.out.println(response.getContentAsString());

    // but I expect the response to be 404 (which works outside the mock setup      
    Assert.assertEquals(response.getStatus(), 404);
}
}

通常我会使用Mockito来模拟数据访问,如下所示:

设置模拟

@Before
public void setup() {
    StubDao stubDao = new StubDao();
}

定义模拟

when(stubDao.getTheValue()).thenReturn("the mocked value");

然而,RESTeasy的模拟在内部创建了一个新的服务类实例。我的问题是,如何将模拟数据访问插入服务的构造函数???

感谢任何帮助!

2 个答案:

答案 0 :(得分:5)

感谢另一篇文章(Resteasy Server-side Mock Framework

找到了答案

使用以下内容允许我创建服务类的实例并设置数据访问:

dispatcher.getRegistry().addSingletonResource(svc);

而不是:

dispatcher.getRegistry().addResourceFactory(factory);

答案 1 :(得分:1)

或者,您可以使用testfun-JEE在测试中运行轻量级JAX-RS(基于RESTeasy和TJWS),并使用testfun-JEE的JaxRsServer junit规则来构建REST请求并声明响应。

testfun-JEE支持将其他EJB以及mockito模拟对象注入到JAX-RS资源类中。