BizTalk database lookup functoid - Unit Testing

I am implementing unit tests for BizTalk.

I am able to unit test BizTalk Maps as long as it does not contain external functoids like the Database Lookup.

Is there any way to fake the Database Lookup functoid so that I can properly unit tests my BizTalk maps?

I have tried the proposed solution on http://ift.tt/1KoLQTb but without success.

I have also tried to find a way to use Microsoft Fakes but I cannot find which component I need to fake.