ASP.NET MVC - 单元测试与Moq框架RenderPartialViewToString（）？

Question

我使用这个辅助方法，把我的PartialViewResult成字符串并返回它作为JSON - http://www.atlanticbt.com/blog/asp-net-mvc-using-ajax-json-and-partialviews/

我的问题是，我使用起订量来模拟控制器，每当我运行单元测试使用这个RenderPartialViewToString （）方法，我得到了“对象引用未设置为对象的实例”。 ControllerContext上的错误。

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; 
} 

这将返回一个代理控制器，也许这就是我得到这个错误的原因。任何想法如何进行单元测试？

非常感谢。

Answer 1

试试这个：

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); 
     }