Just read about the whole fiasco from Aniket's blog.
There is no question that the author got it wrong (and got torched).. he has proposed and delivered a speech on his deviation/derivation of TDD. The problem here is the title.. it should have been 'VS.NET 2005 tools for automated testing' not "Guidelines for TDD"
Seconding Ron Jeffries, I too hope that this is not an MS attempt to adopt, contort and pollute the XP stream with IDE-forced/induced deviations from the holy path shown by the "Rev." Kent Beck :) who has led so many like me across the deserts in search of the promised land (where quality code meets mutually accepted deadlines).
2 Books I think a doubter/newcomer should read are
• XP Xplained - Kent Beck
(First AND second editions to know where XP comes from and what it is)
• Extreme Programming Adventures in C# - Ron Jeffries
For a fun, hands-on, fly-on-the-wall look at how to practice XP.