使用NUnit和RhinoMocks不能讓RhinoMocks發出下面的泛型類型限制的模擬規則

Question

所以：

//Defines basic behavior of all persistable domain objects 
public interface IDomainObject {...} 

//defines domain objects specific to the Security DB 
public interface ISecurityDomainObject : IDomainObject {...} 

//Defines a basic transactional data Repository; there are multiple implementors 
//which each close TRest to the interface that defines their DB's domain classes 
public interface IRepository<TRest> : IDisposable where TRest:IDomainObject 
{ 
    IUnitOfWork BeginUnitOfWork(); 
    void CommitUnitOfWork(IUnitOfWork unitOfWork); 
    void RollBackUnitOfWork(IUnitOfWork unitOfWork);   
    void Save<T>(T domainObject, IUnitOfWork unitOfWork) where T : class, TRest;   
    IQueryable<T> QueryFor<T>(IUnitOfWork unitOfWork) where T :class, TRest; 
} 

public interface ISecurityRepository:IRepository<ISecurityDomainObject> {} 

public class SecurityRepository:ISecurityRepository 

... 

//This line breaks when run in an NUnit test 
var securityRepository = MockRepository.GenerateMock<ISecurityRepository>(); 
... 

我得到的錯誤是：

System.TypeLoadException : Method 'Save' on type 'ISecurityRepositoryProxyb8e21deb3cb04067a01ac5b63f7045af' from assembly 'DynamicProxyGenAssembly2, Version=0.0.0.0, Culture=neutral, PublicKeyToken=null' tried to implicitly implement an interface method with weaker type parameter constraints. 
at System.Reflection.Emit.TypeBuilder.TermCreateClass(RuntimeModule module, Int32 tk, ObjectHandleOnStack type) 
at System.Reflection.Emit.TypeBuilder.CreateTypeNoLock() 
at System.Reflection.Emit.TypeBuilder.CreateType() 
at Castle.DynamicProxy.Generators.Emitters.AbstractTypeEmitter.BuildType() 
at Castle.DynamicProxy.Generators.InterfaceProxyWithTargetGenerator.GenerateCode(Type proxyTargetType, Type[] interfaces, ProxyGenerationOptions options) 
at Castle.DynamicProxy.DefaultProxyBuilder.CreateInterfaceProxyTypeWithoutTarget(Type interfaceToProxy, Type[] additionalInterfacesToProxy, ProxyGenerationOptions options) 
at Castle.DynamicProxy.ProxyGenerator.CreateInterfaceProxyTypeWithoutTarget(Type interfaceToProxy, Type[] additionalInterfacesToProxy, ProxyGenerationOptions options) 
at Castle.DynamicProxy.ProxyGenerator.CreateInterfaceProxyWithoutTarget(Type interfaceToProxy, Type[] additionalInterfacesToProxy, ProxyGenerationOptions options, IInterceptor[] interceptors) 
at Rhino.Mocks.MockRepository.MockInterface(CreateMockState mockStateFactory, Type type, Type[] extras) 
at Rhino.Mocks.MockRepository.CreateMockObject(Type type, CreateMockState factory, Type[] extras, Object[] argumentsForConstructor) 
at Rhino.Mocks.MockRepository.DynamicMock(Object[] argumentsForConstructor) 
at Rhino.Mocks.MockRepository.<>c__DisplayClass7`1.<GenerateMock>b__6(MockRepository r) 
at Rhino.Mocks.MockRepository.CreateMockInReplay(Func`2 createMock) 
at Rhino.Mocks.MockRepository.GenerateMock(Object[] argumentsForConstructor) 
at CSHD.Tests.Unit.Presentation.LoginTests.TestAuthenticationFails() in LoginTests.cs: line 138 

當試圖生成對具體類的模擬，我得到了類似的錯誤，這次在QueryFor（）方法上。如果我試圖重新定義在ISecurityRepository接口中使用TRest的方法，我會得到一個「System.BadImageFormatException：嘗試加載格式不正確的程序（來自HRESULT的異常：0x8007000B）」，這看起來像是一個倒退的步驟。

我認爲核心問題是RhinoMocks被泛型參數用作泛型類型限制而感到困惑。我不知道它在哪裏混淆，因此我不知道如何或是否可以解除它的混淆。我有足夠的集成測試覆蓋率，如果我絕對必須，我可以忽略這些失敗的單元測試，但顯然我寧願修復它們，如果可以的話。你的想法？

Answer 1

它看起來這是造成Castle.DynamicProxy一個已知問題，是固定在該項目的最新主幹，但在最新的犀牛嘲笑版本仍然破：

http://groups.google.com/group/rhinomocks/browse_thread/thread/2c1b53bf66b77b8e/ad09a6cd1e304a93

如果你感覺冒險的你可以用最新的DynamicProxy建立你自己的Rhino Mocks，它應該被修復。

Answer 2

Castle Dynamic Proxy（Rhino Mocks用於生成代理服務器）看起來沒有根據您定義泛型參數的方式正確生成代理類。您可以生成一個代理（因此一個模擬），如果你定義IRepository這樣，而不是：

public interface IRepository<T> : IDisposable where T : class, IDomainObject 
{ 
    IUnitOfWork BeginUnitOfWork(); 
    void CommitUnitOfWork(IUnitOfWork unitOfWork); 
    void RollBackUnitOfWork(IUnitOfWork unitOfWork);   
    void Save(T domainObject, IUnitOfWork unitOfWork);   
    IQueryable<T> QueryFor(IUnitOfWork unitOfWork); 
} 

如果你真的需要它規定的其他方式，你必須文件，犀牛製品的錯誤。