asp.net-mvc - 如何使用犀牛模拟在 MVC RC1 中 stub HttpSessionState？

Question

我正在尝试利用 recent ControllerContext refactoring在 asp.net mvc rc1 中。我应该能够相当简单地 stub session ，但在运行以下代码时，我在第 2 行不断收到 System.NullReferenceException:

var mockContext = MockRepository.GenerateStub<ControllerContext>();
mockContext.Stub(x => x.HttpContext.Session["MyKey"]).Return("MyValue");

我究竟做错了什么？

编辑:我刚刚确认我拥有这篇文章的最新版本的犀牛。

Answer 1

您也需要模拟 HttpContext 才能使其正常工作。
我为此使用了 HttpContext 的模拟:

public class HttpContextMock
{
    private readonly HttpContextBase _contextBase;
    private readonly HttpRequestBase _requestBase;
    private readonly HttpResponseBase _responseBase;
    private readonly HttpSessionStateBase _sessionStateBase;
    private readonly HttpServerUtilityBase _serverUtilityBase;

    public HttpContextBase Context { get { return _contextBase; } }
    public HttpRequestBase Request { get { return _requestBase; } }
    public HttpResponseBase Response { get { return _responseBase; } }
    public HttpSessionStateBase Session { get { return _sessionStateBase; } }
    public HttpServerUtilityBase Server { get { return _serverUtilityBase; } }


    public HttpContextMock()
    {
        _contextBase = MockRepository.GenerateStub<HttpContextBase>();
        _requestBase = MockRepository.GenerateStub<HttpRequestBase>();
        _responseBase = MockRepository.GenerateStub<HttpResponseBase>();
        _sessionStateBase = MockRepository.GenerateStub<HttpSessionStateBase>();
        _serverUtilityBase = MockRepository.GenerateStub<HttpServerUtilityBase>();

        _contextBase.Stub(x => x.Request).Return(_requestBase);
        _contextBase.Stub(x => x.Response).Return(_responseBase);
        _contextBase.Stub(x => x.Session).Return(_sessionStateBase);
        _contextBase.Stub(x => x.Server).Return(_serverUtilityBase);

        _requestBase.Stub(x => x.IsAuthenticated).Return(true);

        _contextBase.User = new GenericPrincipal(new GenericIdentity("a@a.a"),
                                                 new string[] {"Admin"});

    }
}

在设置测试中，我创建了一个 Controller 实例:

    [SetUp]
    public override void TestSetUp()
    {
        base.TestSetUp();

        repository = MockRepository.GenerateMock<IFooRepository>();
        controller = new FooController()
                         {
                             FooRepository = repository,
                             UserRepository = userMockRepository
                         };

        controller.ControllerContext = new ControllerContext(context.Context, new RouteData(), controller);
    }

一切正常，我可以向 session 和许多其他事情添加参数。
希望这可以帮助。