Is anyone "out there" doing TDD, or any other agile or eXtreme techniques, with unmanaged C++?

I've recently been trying to do things the "test first" way, but am finding it extremely difficult. Part of it might be because most of the code is "framework" type stuff (maybe I should be "making it useable before making it reusable"?), but I don't think that can explain it all. The increase in popularity of agile methodologies clearly coincides with the increased popularity of "modern" languages such as Java and C#, but is it anything more than a coincidence?

As ever, your comments, stories (horror or otherwise ;) and any other feedback will be much appreciated...

Aside: maybe this post could have been abbreviated to just four words: "Is anyone out there?"