Reset mock verification in Moq?

Question

Setup as so:

public interface IFoo
{
    void Fizz();
}

[Test]
public void A()
{
    var foo = new Mock<IFoo>(MockBehavior.Loose);

    foo.Object.Fizz();

    foo.Verify(x => x.Fizz());

    // stuff here

    foo.Verify(x => x.Fizz(), Times.Never()); // currently this fails
}

Basically I'd like to enter some code at the // stuff here to make the foo.Verify(x => x.Fizz(), Times.Never()) pass.

And because this probably constitutes moq/unit testing abuse, my justification is so I can do something like this:

[Test]
public void Justification()
{
    var foo = new Mock<IFoo>(MockBehavior.Loose);
    foo.Setup(x => x.Fizz());

    var objectUnderTest = new ObjectUnderTest(foo.Object);

    objectUnderTest.DoStuffToPushIntoState1(); // this is various lines of code and setup

    foo.Verify(x => x.Fizz());

    // reset the verification here

    objectUnderTest.DoStuffToPushIntoState2(); // more lines of code

    foo.Verify(x => x.Fizz(), Times.Never());
}

Basically, I have a state object where a fair bit of work (both in terms of making various mock objects and other faffing around) is requires to push it into State1. Then I want to test the transition from State1 to State2. Instead of duplicating or abstracting the code I'd prefer to just re-use the State1 test, push it into State2 and perform my Asserts - all of which I can do except the verification calls.

Answer 1

I think long after this post was created they added the functionality that the OP had asked for, there is a Moq extension method called Moq.MockExtensions.ResetCalls().

With this method you can do exactly what you wished as shown below:

[Test]
public void Justification()
{
    var foo = new Mock<IFoo>(MockBehavior.Loose);
    foo.Setup(x => x.Fizz());

    var objectUnderTest = new ObjectUnderTest(foo.Object);

    objectUnderTest.DoStuffToPushIntoState1(); // this is various lines of code and setup

    foo.Verify(x => x.Fizz());

    foo.ResetCalls(); // *** Reset the verification here with this glorious method ***

    objectUnderTest.DoStuffToPushIntoState2(); // more lines of code

    foo.Verify(x => x.Fizz(), Times.Never());
}

Update

Now instead of .ResetCalls() we should use .Invocations.Clear() on the latest version of the library:

foo.Invocations.Clear()