For those of us who like to learn by reading good code, what are some of the projects you’ve seen which provide a great example of a medium to large suite of unit tests in action?
This isn’t a question about what your favourite unit testing framework is, but it could be helpful to add which unit testing and/or mocking frameworks are used by the projects you mention.
Any platform will do, but I’m mainly interested in projects which use an xUnit-style unit testing framework in .NET.
Apache CXF has a mind-numbingly large array of unit tests. They are written to Junit, and include the JUnit-Spring mechanisms as well as one of the mock libraries. They include launching processes and many other mechanisms you might need some day.