Question

I currently use the following approach to create a strongly typed object representing session variables.

public abstract class SessionController : Controller {     private const string SESSION_NAME = 'UserSession';      public SessionData SessionData     {         get         {             SessionData sessionData = (SessionData)Session[SESSION_NAME];              if (sessionData != null)             {                 return sessionData;             }             else             {                 sessionData = new SessionData();                 Session[SESSION_NAME] = sessionData;                  return sessionData;             }         }         set         {             Session[SESSION_NAME] = value;         }     }   } 

SessionData is a simple object like for example

[Serializable] public class SessionData {     public String SessionId { get; set; }     public Int64 UserId { get; set; }     public String NameOfUser { get; set; } } 

When creating a new Controller I derivate it from the SessionController so that I have strongley typed access to my SessionData. For example

public CityController : SessionController {     [AcceptVerbs(HttpVerbs.Get)]     public ActionResult Index()     {         ViewData.Model = _cityService.GetAll(SessionData.UserId);          return View('Index');     } } 

So, I am struggling at the moment to get this approached covered by a unittest. A shortened version of what I have tried is the following snippet

[SetUp] public void SetUp() {     mocks = new MockRepository();     _cityService = MockRepository.GenerateStub<ICityService>();     _sesssionData = new SessionData { UserId = 1, SessionId = '1' };      // First Approach     controller = new CityController(_cityService);     controller.Expect(p => p.SessionData).Return(_sesssionData);      // Second Approach     cctx = MockRepository.GenerateStub<ControllerContext>();     cctx.Expect(p=>p.HttpContext.Session['UserSession'] as SessionData).Return(_sesssionData);     controller.ControllerContext = cctx; } 

Has anyone a tip on how to get this problem solved?

Answer 1

If you make your SessionData property virtual then your first approach could work:

// Arrange var mocks = new MockRepository(); var cityService = MockRepository.GenerateStub<ICityService>(); var sesssionData = new SessionData { UserId = 1, SessionId = '1' }; var controller = mocks.PartialMock<CityController>(cityService); controller.Expect(c => c.SessionData).Return(sessionData); controller.Replay();  // Act controller.Index();  //Assert ... 

IMO this approach is not very good because the SUT (Subject Under Test => in this case CityController) is being mocked with PartialMock.