接口分流

Question

我嘲笑在這種情況：

class A 
{ 
    public IB B {get; set;} 
} 

interface IB 
{ 
    //methods 
} 

class B : IB 
{ 
    //IB methods 
} 

public SimpleMockTest() 
{ 
    var mockIB = new Mock<IB>(); 
    var a = new A{B=mockIB.Object}; 
    //do stuff with A, then verify methods on IB were called  
} 

public TheKindOfTestIWantToDo() 
{ 
    var actualB = new B(); 
    var mockIB = new Mock<IB>(); 
    var splitter = new Splitter<IB>(actualB, mockIB.Object); //I need something like this 
    var a = new A{B=splitter}; 
    //do stuff with A, methods invoked on splitter IB get passed to both supplied instances 
    //of IB (actualB, and the mockIB). Allowing me to verify the calls as well as have the methods invoked on the actual B object. 
    //OR: 
    var mockIB2 = new Mock<IB>(actualB); //behaviour is dictated by the actual, but allows verification 
    var a2 = new A{B=mockIB2.Object}; 
} 

所以我某種代理工廠，將genericly支持的接口，並調用相同的方法在多個接口上之後。當然，如果一個方法返回一個值，每個方法都需要返回相同的值，或者可能需要精確。

我想在測試過程中有效地偵聽接口調用，但沒有模擬結束行。

我使用Moq如果它有任何區別。

Answer 1

據我所知，對於actualB上的所有方法都沒有辦法做到這一點。

我想你想要的東西，如：

public TheKindOfTestIWantToDo() 
{ 
    var actualB = new B(); 
    var mockIB = new Mock<IB>(); 
    mockIB.Setup(b => b.Foo()).Returns(() => actualB.Foo()) 
    var a = new A { B = mockIB }; 
    //do stuff with A, methods invoked on splitter IB get passed to both supplied instances 
    //of IB (actualB, and the mockIB). Allowing me to verify the calls as well as have the methods invoked on the actual B object. 
} 

你或許應該重新考慮你的單元測試策略，雖然。 A的行爲應該可以測試而不依賴於B的行爲。嘗試讓mockIB返回特定值，然後爲B編寫一組不同的測試。