A very nice set of articles that talks about testing of Whidbey. Excellent read. Enjoy!!!!

Testing ASP.NET 2.0 and Visual Web Developer
Summary:
Several people have asked for additional testing details after my recent Whidbey Update post where I talked a little about how we are building ASP.NET 2.0 and Visual Web Developer. Some specific questions I’ve been asked include: How do you build and track 105,000 test cases and 505,000 test scenarios? How big is the test team in relation to the dev team? What tools do we use to write and run them? What is the process used to manage all of this? Etc, Etc. Hopefully the below post provide some answers.

Sample documents (Read article first)
Sample Test Plan: http://www.scottgu.com/blogposts/testingatmicrosoft/testplan/testplan.htm
Sample Automated Test Case:
http://www.scottgu.com/blogposts/testingatmicrosoft/testcase/testcase.htm


Tracking Bugs
Summary:
“Can you clarify - how issues are assigned to developers? Does a tester assign issues directly to members of development team, or they assign them to PM who will assign those issues to team members? Or issues are automatically distributed between development groups based on member's workload? What kind of software do you use for issue tracking?”