Expected invocation on the mock once, but was 0 times No invocations performed

Question

I'm trying to mock function like below:

AntiForgeryValidator a = new AntiForgeryValidator();
public void ValidateRequestHeader(HttpRequestBase request) 
{
    string cookieToken = "";
    string formToken = "";
    if (request.Headers["RequestVerificationToken"] != null)
    {
        string[] tokens = request.Headers["RequestVerificationToken"].Split(':');
        if (tokens.Length == 2)
        {
            cookieToken = tokens[0].Trim();
            formToken = tokens[1].Trim();
        }
    }
    a.Validate(cookieToken, formToken);
    //AntiForgery.Validate(cookieToken, formToken);
}

So I created interface:

public interface IAntiForgeryValidator
{
    //void ValidateRequestHeader(HttpRequestBase request);
    void Validate(string cookieToken, string formToken);
}
public class AntiForgeryValidator : IAntiForgeryValidator
{
    public void Validate(string cookieToken, string formToken)
    {
        AntiForgery.Validate(cookieToken, formToken);
    }
}

And add new code to the test project: Mocking Http Request:

Mock<HttpRequestBase> Request = new Mock<HttpRequestBase>();
Request.SetupGet(x => x.Headers).Returns(new System.Net.WebHeaderCollection{
    {"RequestVerificationToken", "RequestVerificationToken"}
});

And mock validate method:

Mock<IAntiForgeryValidator> antiForgeryMock = new Mock<IAntiForgeryValidator>();
antiForgeryMock.Setup(m => m.Validate(
    It.IsAny<string>(),
    It.IsAny<string>()))
    .Callback((string cookieToken, string formToken) =>
        {
            // call back
        });

antiForgeryMock.Verify(m => m.Validate(
        It.IsAny<string>(),
        It.IsAny<string>()), Times.Once());

This is all code I managed to create using answer found on this page. But I'm still getting error like in the topic. I suppose that all its caused by this lines:

.Callback((string cookieToken, string formToken) =>
        {
            // call back
        });

But I have no idea what should I put there. Reading Moq docs didn't help either.

@update: Trying to done this like creating fakeRepository

private IAntiForgeryValidator fakeValidation;
fakeValidation = antiForgeryMock.Object;

Function when I'm trying to fire tests:

[TestMethod]
public void EditPost()
{
    var data = default(Device);
    var result = DC.Edit(data);
    Assert.IsNotNull(result);
}

@Update two: added new code:

DC.ControllerContext = new ControllerContext(context.Object,new RouteData(),DC);

Now If I comment out Veryfy code works and is passed to controller. But still not working uncommented

Answer 1

You have to put the antiForgeryMock.Verify() after you've run your test action. A test usually looks like this:

// arrange
var myMock = new Mock<MyInterface>();
myMock.Setup(...);
var mySut = new Sut(myMock.Object);

// act
mySut.DoSomething()

//assert
myMock.Verify(...);

As mentioned in the comments, you don't need a Setup for your test, so you will skip that part.