Moq - verify that no methods were called

Question

This is a unit-test from one of my controllers in an ASP.NET MVC project, using NUnit and Moq:

    [Test]
    public void Create_job_with_modelstate_errors_fails()
    {
        var job = new JobDto();
        this.controller.ModelState.AddModelError("", "");

        ActionResult result = this.controller.Create(job);

        this.jobService.Verify(p => p.SaveJob(It.IsAny<JobDto>()), Times.Never());

        // some other asserts removed for brevity
    }

This works fine, but from a maintenance point of view I think this line is more verbose than it needs to be:

        this.postService.Verify(p => p.SavePost(It.IsAny<PostDto>()), Times.Never());

What i'd really like to be able to do is something equivalent to...

this.postService.VerifyNoMethodsCalled();

...as all i'm interested in is that my controller doesn't call any methods on the service. Is this possible using Moq?

Answer 1

You could create the Mock with MockBehavior.Strict, e.g.

this.postService = new Mock<IPostService>(MockBehavior.Strict);

That way, if you don't Setup any expectations, any calls to this.postService will fail

Answer 2

The great thing about Moq is how readable, and simple the set up of mocks can be. Personally, I find the usage of the Times class to be nice.

postService.Verify(p => p.SavePost(It.IsAny<PostDto>()), Times.Never());

The above states, that under no circumstances the post service should perform a save. The best method of improving this, if you find the code tedious (though I see the readability within tests as a good thing) is to extract this method into a extension/test helper method.