This video introduces the control source and unit test announcement from MIX, and then walk you through:
* exploring the Silverlight 2 Beta 1 control source code, unit test and unit test framework download
* using Visual Studio 2008 to run the control unit tests
* adding the Exclusive attribute to narrow the test(s) that run in the browser when analyzing tests
* running the tests in Firefox
* running the tests in Expression Blend 2.5
http://www.jeff.wilcox.name/2008/03/20/vid-silverlight-control-ut/