MVC ModelBinder test helper

MvcModelBinderTestHelper.cs

  public static class MvcModelBinderTestHelper
  {
    public static ModelBindingContext FakeModelBindingContext<T>(NameValueCollection formCollection) where T : class
    {
      var valueProvider = new NameValueCollectionValueProvider(formCollection, null);

      var metadata = ModelMetadataProviders.Current.GetMetadataForType(null, typeof(T));

      var bindingContext = new ModelBindingContext
      {
        ModelName = "",
        ValueProvider = valueProvider,
        ModelMetadata = metadata
      };

      return bindingContext;
    }

    private static ControllerContext FakeControllerContext(Mock<HttpSessionStateBase> sessionMock, Mock<HttpRequestBase> requestMock, Mock<HttpResponseBase> responseMock, Mock<HttpServerUtilityBase> serverMock)
    {
      var controllerContext = new ControllerContext
      {
        HttpContext = FakeHttpContext(sessionMock, requestMock, responseMock, serverMock)
      };

      return controllerContext;
    }

    private static HttpContextBase FakeHttpContext(Mock<HttpSessionStateBase> sessionMock, Mock<HttpRequestBase> requestMock, Mock<HttpResponseBase> responseMock, Mock<HttpServerUtilityBase> serverMock)
    {
      var context = new Mock<HttpContextBase>();

      var request = requestMock;
      var response = responseMock;
      var session = sessionMock;
      var server = serverMock;

      context.Setup(ctx => ctx.Request).Returns(request.Object);
      context.Setup(ctx => ctx.Response).Returns(response.Object);
      context.Setup(ctx => ctx.Session).Returns(session.Object);
      context.Setup(ctx => ctx.Server).Returns(server.Object);

      return context.Object;
    }
  }