All developers understand the theoretical value of unit testing, but with data driven applications, figuring out how to create tests can be hard. In this session, you will learn how to design and build a data layer that can be tested. We will introduce data layer architecture practices and methodologies that make testing possible, and cover the basics of unit test mocking. You will also be guided through various types of testing, including unit, integration, and functional testing. Leave this session with the basics needed to start creating tests for application data layers, including those powered by LinqToSQL and Entity Framework.

1. Building a Testable Data Access Layer Todd Anglin Chief Evangelist, Telerik Level: Intermediate

3. today’s plan

4. what is a “data layer”?

6. why build a data layer? what’s the benefit?

8. Presentation Web Desktop Domain Logic (“the code that makes you money”) Data Persistence Database Cloud XML Etc. Service

9. a good data layer…

11. a bad data layer is…

13. how do we build “data layers”?

15. popular .NET ORMs

19. testing the data layer

32. should you test your DAL?

33. [email_address] @toddanglin telerikwatch.com Q & A