Question

Say I have an interface that has as property another interface. Something like:

interface IOne  
{  
    ITwo Two { get; set;}   
}  

And I create a mock for ITwo and then create a mock for IOne using Mock<ITwo>.Object. How can I raise an event on ITwo when I only have a reference to IOne or Mock<IOne>? I need a reference for Mock<ITwo>, but how can I cast from ITwo to Mock<ITwo>? I hope it’s clear 🙂

Thank you.

edit:

I hope this exampler is clearer:

interface IHuman
{
    void Sneeze();
    INose Nose { get; set;}
}

interface INose
{
    event EventHandler Irritated;
}

class ToBeTested
{
    private IHuman _human;

    public ToBeTested(IHuman human)
    {
        _human = human;

        _human.Nose.Irritated += NoseIrritated;
    }

    void NoseIrritated(object sender, EventArgs e)
    {
        _human.Sneeze();
    }
}

I want to be able to access Mock from Mock. So I can do somethiong like:

noseMock.Raise(nose => nose.Irritated += null);
humanMock.Verify(human => human.Sneeze());

Answer 1

I’m still not entirely sure what you’re asking for, but it looks like you’re trying to work out how to get from a mocked object to the Mock<T> wrapper that produced it? (“how can I cast from ITwo to Mock<ITwo>?”)

It’s pretty easy: there’s a Mock.Get method that finds the Mock<T> for a T (as long as that object came from Moq).

Mock<ITwo> mockTwo = Mock.Get(two);

Details can be found in the Moq Getting started guide:

http://code.google.com/p/moq/wiki/QuickStart#Advanced_Features