使用构造函数模拟对象 - Rhino Mocks

Question

How do I mock an object with a constructor using Rhino Mocks?

For example how would this object be mocked...

public class Foo : IFoo
{
    private IBar bar;
    public Foo (IBar bar)
    {
        this.bar = bar
    }

    public DoSomeThingAwesome()
    {
       //awesomeness happens here
    }

}

Answer 1

You don't mock Foo - you mock IFoo . To test Foo itself, you mock IBar and pass the mock into the constructor.

You should try to avoid having things which rely on IFoo explicitly constructing instances of Foo : they should either be given a factory if IFoo somehow, or have an IFoo explicitly passed to them.

Answer 2

var myIFoo = MockRepository.GenerateStub<IFoo>();

你可以检查发生的真棒

myIFoo.AssertWasCalled(f => f.DoSomethingAwesome());

Answer 3

It's been awhile since I used Rhino but I believe you can do:

mockRespository.StrictMock<Foo>( ibarVariable )

However it won't really work unless all of Foo's members are virtual.