单元测试服务堆栈缓存异常

本文关键字：异常 缓存 堆栈 服务 单元测试 | 更新日期: 2023-09-27 18:32:47

我正在尝试对一些ServiceStack服务进行单元测试。这些服务使用缓存。我可以成功地模拟我的依赖项，并使用 MockRequestContext 调用我的服务。但是当我的服务返回时，它是基地内的 DTO。RequestContext.ToOptimizedResultUsingCache，我从下面的调用中得到一个空引用异常：

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

我的测试设置如下

[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 
    }

当我调用我的服务方法时，一切看起来都很好，但是当 dto 保存到此处看到的缓存时，我收到空引用异常

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;
                }

单元测试服务堆栈缓存异常

根据评论中的mythz建议，我添加了一个应用程序主机并使用了它的容器，测试有效。以下是更新的测试。

[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
    }
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