Let me say smth. ;)

SharePoint is very powerful development platform, but it’s hard to test your code without changing it. It widely uses sealed classes, non-virtual and static methods and static properties, which make it impossible to mock its objects via popular free mocking frameworks: Rhino Mocks , Moq or NMock . However there is one free framework exists on the market. It’s called Microsoft Moles Isolation Framework and it can be plugged into Visual Studio 2008/2010 Professional Edition. To use Moles we need: 1) Download Moles x86 or x64 edition 2) Install it 3) Open your test project in Visual Studio 4) Add reference to Microsoft SharePoint library (and/or any other library you need) into your project 5) Select Microsoft.SharePoint in references list, open context menu and choose “Add Moles Assembly” After this step a new file Microsoft.SharePoint.moles will be added to the project. 6) Run Build command of the project. After build we should see new references added to the project: