Microsoft Fakes

Moq has been around for a while and Mole has replaced by Fakes. 

Fakes touches on Stub and Shim. In this short code I will just discuss stub at this point of time.

Download the sample from

You will find an Interface IRepository.cs.

You cannot test the Interface if there does not implement. In VS 2012 there is a Fakes Framework you can make your Interface to become stub.


 When you open ItemBusinessTest.cs yon can find the TestMethod below.


public void ItSaves()


    bool result = false;

    StubIRepository repository = new StubIRepository();

    repository.SaveItem = (Item item) => result = true;


    var itemBusiness = new ItemBusiness(repository);

    itemBusiness.Save(new Item(“Test Item”, 1));



Realize that if you do not use the Fakes then the code below is will not work.

IRepository repository = new IRepository();


About chanmingman

Since March 2011 Microsoft Live Spaces migrated to Wordpress ( till now, I have is over 1 million viewers. This blog is about more than 50% telling you how to resolve error messages, especial for Microsoft products. The blog also has a lot of guidance teaching you how to get stated certain Microsoft technologies. The blog also uses as a help to keep my memory. The blog is never meant to give people consulting services or silver bullet solutions. It is a contribution to the community. Thanks for your support over the years. Ming Man is Microsoft MVP since year 2006. He is a software development manager for a multinational company. With 25 years of experience in the IT field, he has developed system using Clipper, COBOL, VB5, VB6, VB.NET, Java and C #. He has been using Visual Studio (.NET) since the Beta back in year 2000. He and the team have developed many projects using .NET platform such as SCM, and HR based applications. He is familiar with the N-Tier design of business application and is also an expert with database experience in MS SQL, Oracle and AS 400.
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