Groups post on writing a CSV generator using TDD

I saw a great post today on the TDD Yahoo! group regarding test driving a CSV generator. J.B. walks through the thought process behind each test, as well as refactoring steps. It is a very comprehensive example that is worth coding up if you (like me) are still learning TDD.

UPDATE 2007-08-30: Corrected terminology -- the example is generating CSV, not parsing it.