This week I had a need for NUnit based unit testing against a class that depended on a provided SqlConnection. Up to this point I had been able to mock external objects and their behavior based on interfaces, but with a SqlConnection I could not mock. There are some options for mocking the SqlConnection such as TypeMock, but I needed a realistic connection to test against. This also proved as a good method for building the expected DB interface. The solution that worked best for my environment (only...