Timmy Kokke has published the slides and code from his talk at the SDN Event in Zeist about Unit testing MVVM in Silverlight.
Source: Timmy Kokke's Blog
I talked briefly about how MVVM works in Silverlight and dove deeper into the Unit Testing Framework which is available in the Silverlight Toolkit. After going through the various attributes used in the framework I gave a demonstration on how to use StatLight, a command line tool for running tests.