C# project with unit tests

I'm writing Master's thesis. I nead some open source projects (written in C#) with开发者_JS百科 unit tests (NUnit or MSTest) for my experiments. Anyone knows, where can I download these projects?

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ASP.Net MVC source code from Microsoft
Sharp Architecture is a good reference architecture for ASP.Net MVC.
Microsoft Spain has a released a reference atchitecture with unit testing using Pex and Moles.

All the above projects have extensive well written unit tests.

Check out codeplex.com

Did you look at the MSDN documentation concerning unit testing? There's a walkthrough that might be handy.