Question

我有一个使用ServiceStack创建的休息服务，使用nHibernate作为从SqlCe数据库获取数据的一种方式。我一直在尝试使用nUnit和Moq编写一些单元测试 - 我已经成功地模拟了nHibernate实现以返回null，无效对象等等 - 但我的测试总是在调用基类时抛出NullReferenceException设置HttpStatus等。

public List <ParameterDto> Get (ParameterAll parameterAll)
    {
        List <ParameterDto> parameterResponseList = new List <ParameterDto> ();
        try
        {
            List <ParameterDomainObject> parameterDomainObjectList = _ParameterDao.getAllParameters ();
            foreach (ParameterDomainObject parameterDomainObject in parameterDomainObjectList)
            {
                parameterResponseList.Add (parameterDomainObject.ToDto ());
            }
        }
        catch (WebServiceException webEx)
        {
            Debug.WriteLine ("WebServiceException.ErrorCode         " + webEx.ErrorCode);
            Debug.WriteLine ("WebServiceException.ErrorMessage      " + webEx.ErrorMessage);
            Debug.WriteLine ("WebServiceException.ResponseStatus    " + webEx.ResponseStatus);
            Debug.WriteLine ("WebServiceException.StatusCode        " + webEx.StatusCode);
            Debug.WriteLine ("WebServiceException.StatusDescription " + webEx.StatusDescription);
            Debug.WriteLine ("WebServiceException.ErrorCode         " + webEx.ErrorCode);
        }
        catch (DomainObjectNotFoundException domainObjectNotFoundException)
        {
            base.Response.StatusCode = (int) HttpStatusCode.NotFound;
            base.Response.AddHeader ("Reason",
                                     domainObjectNotFoundException.Message);
        }
        catch (Exception exception)
        {
            Debug.WriteLine ("Exception: " + exception.Message);
            base.Response.StatusCode = (int) HttpStatusCode.InternalServerError;
            base.Response.AddHeader ("Reason",
                                     exception.Message);
        }
        /* Always throws an exception here, or anywhere base.Response is called */
        base.Response.StatusCode = (int) HttpStatusCode.OK;
        base.Response.AddHeader ("Reason",
                                 Strings.ParameterRestResponse_Get_OK);
        return parameterResponseList;
    }

使用RestClient和Firefox进行测试时，该服务工作正常，当我注释掉base.Response代码时，我猜我可能只是在单元测试中没有正确设置？

    [Test]
    public void Test_Method_Get_AllParameters_Unsucessful ()
    {
        Mock <IRequestContext> mockedRequestContext = new Mock<IRequestContext>();
        mockedRequestContext.SetupGet(f => f.AbsoluteUri).Returns("http:/localhost:8080/parameters/all");

        Mock<IParameterDao> mockedParameterDao = new Mock<IParameterDao>();
        mockedParameterDao.Setup (returns => returns.getAllParameters ()).Returns (new List <ParameterDomainObject> ());
        Assert.IsNotNull (mockedParameterDao);

        ParameterRestService service = new ParameterRestService(mockedParameterDao.Object)
        {
            RequestContext = mockedRequestContext.Object
        };

        List <ParameterDto> parameterDtos = service.Get (new ParameterAll ());
    }

Answer 1

看起来你只需要模拟Service类的Response属性。它没有setter而受到保护，但是你应该可以通过它来模拟它......

    Mock<IRequestContext> mockedRequestContext = new Mock<IRequestContext>();
    Mock<IHttpResponse> mockedResponse = new Mock<IHttpResponse>();
    mockedRequestContext.SetupGet(f => f.AbsoluteUri).Returns("http:/localhost:8080/parameters/all");
    mockedRequestContext.Setup(f => f.Get<IHttpResponse>()).Returns(mockedResponse.Object);

如何使用Moq测试ServiceStack服务

1 个答案: