TDD, Xaf, Typemock and eXpandhttps://www.dotnetzone.gr:443/cs/blogs/abekiaris/archive/2009/06/25/tdd-xaf-typemock-and-expand.aspxIf you do not know about TypeMock see some cool video tutorials here . TDD is an software design approach that states: In order to design your software from the correct angle and don’t get lost in the info you have first write down a test that describeselCommunityServer 2.1 SP3 (Build: 20423.1)