Just found Pex – a freshly released tool by Microsoft Research. It is able to automatically produce a traditional unit test suite with high code coverage from a parameterized unit test, and, in addition, Microsoft guys claim that it can suggest to the programmer how to fix the bugs! Has to be cool! More info is available at Nikolai Tillmann’s Blog [MSFT] (leads the Pex project) and Peli’s Farm (by Peli de Halleux’s [MSFT]).
Support for NUnit, MbUnit or xUnit.net is provided through the Pex Extensions project at CodePlex.
In addition to not yet finished Reference Manual (see single page version) there is pretty extensive tutorial (more than 70 pages at the moment of writing).
Roman Hnatiuk 