Marigold is an in-container "scenario-based" white-box unit-testing framework for J2EE applications that permits direct testing of business logic and data-access layers, and separates test-data from test-code.
SnapDAL for .Net is a combination of a data access helper and a Factory that supports the use of the generic ADO.net interfaces. It is also integrated with the unit testing framework, .NET MockObjects, which supply mock implementations for ADO.net.