The NUnit transformation converts an existing .Net compatible Class with public methods into a Class with a test method for each public method. The resulting Class can then be generated and the tests filled out and run by NUnit.
The C# elements (originally transformed from the PIM)
After transformation, become the PSM elements
|•||For each Class in the C# model, a corresponding Test Class has been created containing a test method for every public method in the source Class, plus the methods required to appropriately set up the tests; you fill in the details of each test|