In ServiceStack is it possible to mock the Request.OriginalRequest object for unit tests?

Question

I'd like to make my ServiceStack service testable.

Presently I have:

[RequireFormsAuthentication]
public object Delete(DeleteRequest request)
{
     var originalRequest = (HttpRequest)Request.OriginalRequest;
     var identity = originalRequest.RequestContext.HttpContext.User.Identity;
     return othercode(identity);
}

Where RequireFormsAuthentication is

public class RequireFormsAuthenticationAttribute : RequestFilterAttribute
{
    public override void Execute(IHttpRequest req, IHttpResponse res, object requestDto)
    {
        var originalRequest = (HttpRequest)req.OriginalRequest;
        var identity = originalRequest.RequestContext.HttpContext.User.Identity;
        if (!identity.IsAuthenticated)
        {
            res.StatusCode = (int)HttpStatusCode.Forbidden;
            res.EndServiceStackRequest(skipHeaders: true);
        }
    }
}

I've mocked out all the dependencies used by 'othercode()' and all that's left is the stuff that's in the base class Service. Is there a pattern/strategy/approach/something I'm missing that makes this trivial?

Answer 1

Here's how to test with Moq. This service looks for a "key" and "value" in the query string and another parameter in the request DTO. The service returns a string response based on the value given.

    [Test]
    public void MyTest()
    {
        var mockRequestContext = new Mock<IRequestContext>();
        var mockedHttpRequest = new Mock<IHttpRequest>();

        NameValueCollection querystring = new NameValueCollection();
        querystring.Add("myKey", "myValue");

        mockedHttpRequest.SetupGet(r => r.QueryString).Returns(querystring);

        mockRequestContext.Setup(x => x.Get<IHttpRequest>()).Returns(mockedHttpRequest.Object);

        AboutService service = new AboutService
        {
            RequestContext  = mockRequestContext.Object,
        };

        AboutResponse response = (AboutResponse)service.Any(new About
        {
            Company = "myOtherValue",
        });

        Assert.AreEqual(0, response.QueryResult);
        Assert.AreEqual("validResponse", response.Version);
    }

Answer 2

I apologize for not using moq...already had some of this done using RhinoMocks. I think the concept should transfer to moq. This might be a good resource as well as this this.

Anyway, I think the test code below should get you started. Your seam into mocking Request.OriginalRequest is replaceing the Service.RequestContext with a mock object. Then you just have to mock everything beyond that. It's going to be a lot of 'mocking' and if you repeat to yourself 'Are you mocking me' every time you mock a class it's almost enjoyable.

[Test]
public void testsomethign()
{
    var mockedRequestContext = MockRepository.GenerateMock<IRequestContext>();
    var mockedHttpRequest = MockRepository.GenerateMock<IHttpRequest>();
    var mockedOriginalRequest = MockRepository.GenerateMock<HttpRequestBase>();
    var mockedOriginalRequestContext = MockRepository.GenerateMock<RequestContext>();

    mockedOriginalRequest.Stub(x => x.RequestContext).Return(mockedOriginalRequestContext);
    mockedHttpRequest.Stub(x => x.OriginalRequest).Return(mockedOriginalRequest);

    mockedRequestContext.Stub(x => x.Get<IHttpRequest>()).Return(mockedHttpRequest);
    var service = new ServiceTests()
    {
        RequestContext = mockedRequestContext
    };

    service.Delete(new DeleteRequest());
}