用N-Unit和Rhino mock编写单元测试

初级c#/。我是。NET开发人员，刚刚被指派为我今天创建的一个服务方法编写我的第一个单元测试。我的公司使用N-Unit和Rhino mock，所以我现在正在尝试观看Pluralsight课程来自学这两个框架。下面是我创建的方法以及我试图编写的单元测试，以及它产生的错误:(

谁能告诉我我做错了什么?

待测方法:

public bool shouldSubmit(long clientId)
{
    bool isEncrypted = clientFeatRepo.hasClientFeat(clientId, FeatEnum.Encrypted);
    bool isSeamless = clientFeatRepo.hasClientFeat(clientId, FeatEnum.Seamless);
    if (isEncrypted == false && isSeamless == false)
    {
        return true;
    }
    return false;
}

单元测试:

public void testShouldSubmit()
{
    clientFeatRepo.Stub(x => x.hasClientFeat(111, FeatEnum.NotEncrypted)).Return(false);
    clientFeatRepo.Stub(x => x.hasClientFeat(111, FeatEnum.NotSeamless)).Return(false);
    bool results = apiPackageService.shouldSubmit(111);
    mocks.ReplayAll();
    Assert.IsTrue(results);
}

错误:

System.InvalidOperationException : Previous method 'IClientFeatRepo.hasClientFeat(111, NotEncrypted);' requires a return value or an exception to throw.
   at Rhino.Mocks.Impl.RecordMockState.AssertPreviousMethodIsClose()
   at Rhino.Mocks.Impl.RecordMockState.MethodCall(IInvocation invocation, MethodInfo method, Object[] args)
   at Rhino.Mocks.Impl.Invocation.Actions.RegularInvocation.PerformAgainst(IInvocation invocation)
   at Rhino.Mocks.Impl.RhinoInterceptor.Intercept(IInvocation invocation)
   at Castle.DynamicProxy.AbstractInvocation.Proceed()
   at Castle.Proxies.IClientFeatRepoProxyaa745bc909574b67a5ccce407ef647a9.IClientFeatRepo.hasClientFeat(Int64 clientId, FeatEnum featEnum)
   at MercuryUserWeb.Core.Services.ApiPackageService.shouldSubmit(Int64 clientId) in C:'Users'DFriedland'Documents'Core'Services'ApiPackageService.cs:line 190
   at MercuryUserWebTest.Core.Services.ApiPackageServiceTest.testShould() in C:'Users'DFriedland'Documents'Core'Services'ApiPackageServiceTest.cs:line 1210

正确测试码:

public void testShouldSubmit()
{
    clientFeatRepo.Stub(x => x.hasClientFeat(111, FeatEnum.NotEncrypted)).Return(false);
    clientFeatRepo.Stub(x => x.hasClientFeat(111, FeatEnum.NotSeamless)).Return(false);
    mocks.ReplayAll();
    bool results = apiPackageService.shouldSubmit(111);
    Assert.IsTrue(results);
}