單元測試ServiceStack緩存異常

Question

我想單元測試一些ServiceStack服務。這些服務使用緩存。我可以成功地模擬我的依賴關係，並使用MockRequestContext調用我的服務就好了。但是，當我的服務回報它的DTO的base.RequestContext.ToOptimizedResultUsingCache裏面，我從下面的調用一個空引用異常：

ServiceStack.CacheAccess.Providers.CacheClientExtensions.Cache(ICacheClient cacheClient, String cacheKey, Object responseDto, IRequestContext context, Nullable`1 expireCacheIn) 

我的測試低於

[TestMethod] 
    public void GetAgencyCase_Returns_AgencyCaseDetailsResponse() 
    { 
     Container container = new Container(); 

     Mock<IChangeRequestService> changeRequestService = new Mock<IChangeRequestService>(); 
     Mock<IRequestService> requestService = new Mock<IRequestService>(); 

     //Build the case we want returned 
     Case testCase = Builder<Case>.CreateNew() 
      .With(x => x.CaseId = "123") 
      .And(x => x.CaseNumber = "456") 
      .With(x => x.Agencies = Builder<CasesAgency>.CreateListOfSize(1) 
       .All() 
       .With(m => m.Agency = Builder<Agency>.CreateNew().With(z => z.AgencyId = 2).And(z => z.AgencyName = "Test").Build()) 
       .Build()) 
      .With(x => x.Requests = Builder<Request>.CreateListOfSize(5) 
       .Build()) 
       .Build(); 

     requestService.Setup<Case>(x => x.GetCase(It.IsAny<CaseSearchCriteria>(), It.IsAny<AuthenticatedUser>())) 
      .Returns(testCase); 

     container.Register<IChangeRequestService>(changeRequestService.Object); 
     container.Register<IRequestService>(requestService.Object); 

     container.Register<ILog>(new Mock<ILog>().Object); 
     container.Register<ICacheClient>(new MemoryCacheClient()); 
     container.RegisterAutoWired<AgencyCaseService>(); 

     var service = container.Resolve<AgencyCaseService>(); 
     service.SetResolver(new BasicResolver(container)); 

     var context = new MockRequestContext() { ResponseContentType = ContentType.Json }; 
     context.CreateAppHost(); 

     service.RequestContext = context; 


     var response = service.Get(new GetAgencyCase { AgencyId = 2, AgencyCaseNumber = "123" }); 
     ...assert stuff 
    } 

一切設置看起來很好，當我打電話給我服務的方法，但是我得到空引用異常時，DTO被保存在這裏

try 
     { 
      var cacheKey = UrnId.Create<GetAgencyCase>(
       request.AgencyId.ToString() + 
       request.AgencyCaseNumber); 

      var cacheExpireTime = TimeSpan.FromMinutes(_cacheDuration); 

      return base.RequestContext.ToOptimizedResultUsingCache<AgencyCaseDetailsResponse>(base.Cache, cacheKey, cacheExpireTime,() => 
       { ...business logic 
        return agencyCaseDto; 
       } 

Answer 1

每mythz建議見於評論緩存中，我添加編輯一個應用程序主機，並使用其容器，測試工作。以下是更新的測試。

[TestMethod] 
    public void GetAgencyCase_Returns_AgencyCaseDetailsResponse() 
    { 
     var appHost = new BasicAppHost().Init();//this is needed for caching 
     Container container = appHost.Container; 

     Mock<IChangeRequestService> changeRequestService = new Mock<IChangeRequestService>(); 
     Mock<IRequestService> requestService = new Mock<IRequestService>(); 

     //Build the case we want returned 
     Case testCase = Builder<Case>.CreateNew() 
      .With(x => x.CaseId = "123") 
      .And(x => x.CaseNumber = "456") 
      .With(x => x.Agencies = Builder<CasesAgency>.CreateListOfSize(1) 
       .All() 
       .With(m => m.Agency = Builder<Agency>.CreateNew().With(z => z.AgencyId = 2).And(z => z.AgencyName = "Test").Build()) 
       .Build()) 
      .With(x => x.Requests = Builder<Request>.CreateListOfSize(5) 
       .Build()) 
       .Build(); 

     requestService.Setup<Case>(x => x.GetCase(It.IsAny<CaseSearchCriteria>(), It.IsAny<AuthenticatedUser>())) 
      .Returns(testCase); 

     container.Register<IChangeRequestService>(changeRequestService.Object); 
     container.Register<IRequestService>(requestService.Object); 

     container.Register<ILog>(new Mock<ILog>().Object); 
     container.Register<ICacheClient>(new MemoryCacheClient()); 
     container.RegisterAutoWired<AgencyCaseService>(); 

     var service = container.Resolve<AgencyCaseService>(); 
     service.SetResolver(new BasicResolver(container)); 

     var context = new MockRequestContext() { ResponseContentType = ContentType.Json }; 

     service.RequestContext = context; 


     var response = service.Get(new GetAgencyCase { AgencyId = 2, AgencyCaseNumber = "123" }); 
     ...assert stuff 
    }