ASP.NET MVC - 單元測試與Moq框架RenderPartialViewToString（）？

Question

我使用這個輔助方法，把我的PartialViewResult成字符串並返回它作爲JSON - http://www.atlanticbt.com/blog/asp-net-mvc-using-ajax-json-and-partialviews/

我的問題是，我使用起訂量來模擬控制器，每當我運行單元測試使用這個RenderPartialViewToString （）方法，我得到了「對象引用未設置爲對象的實例」。 ControllerContext上的錯誤。

private ProgramsController GetController() 
{ 
var mockHttpContext = new Mock<ControllerContext>(); 
mockHttpContext.SetupGet(p => p.HttpContext.User.Identity.Name).Returns("test"); 
mockHttpContext.SetupGet(p => p.HttpContext.Request.IsAuthenticated).Returns(true); 
// Mock Repositories 
var mockOrganizationRepository = new MockOrganizationRepository(MockData.MockOrganizationsData()); 
var mockIRenderPartial = new BaseController(); 
var controller = new ProgramsController(mockOrganizationRepository, mockIRenderPartial); 
controller.ControllerContext = mockHttpContext.Object; 
return controller; 
} 

這將返回一個代理控制器，也許這就是我得到這個錯誤的原因。任何想法如何進行單元測試？

非常感謝。

Answer 1

試試這個：

public static void SetContext(this Controller controller) 
     { 
      var httpContextBase = new Mock<HttpContextBase>(); 
      var httpRequestBase = new Mock<HttpRequestBase>(); 
      var respone = new Mock<HttpResponseBase>(); 
      var session = new Mock<HttpSessionStateBase>(); 
      var routes = new RouteCollection(); 
      RouteConfigurator.RegisterRoutesTo(routes); 

      httpContextBase.Setup(x => x.Response).Returns(respone.Object); 
      httpContextBase.Setup(x => x.Request).Returns(httpRequestBase.Object); 
      httpContextBase.Setup(x => x.Session).Returns(session.Object); 
      session.Setup(x => x["somesessionkey"]).Returns("value"); 
      httpRequestBase.Setup(x => x.Form).Returns(new NameValueCollection()); 
      controller.ControllerContext = new ControllerContext(httpContextBase.Object, new RouteData(), controller); 
      controller.Url = new UrlHelper(new RequestContext(controller.HttpContext, new RouteData()), routes); 
     }