Automated Testing

I was looking around and I'm wondering if there are any tests for drupal. Drupal as a whole would probably do better with some sort of automated test suite. My recent experience in development has been Test-Driven and this has been very useful in producing new releases fast. Although I have not been involved in Drupal development yet it strikes me that there is no integration environment of the kind that you see with larger systems.

I upgraded to RC1 last weekend and it mucked up my primary links, I'm not convinced that the core upgrades right. If there was an environment that tried these things automatically on the HEAD then development would be quicker.

Am I right in thinking that most of the testing, if not all, is done manually in the Drupal community? Have I missed something?

Andy.

PS. I blogged something about a webtest tool that people might be interested (related to this) .