Evert Pot has taken a second look at the popular unit testing software for PHP - PHPUnit.
Somewhere in 2007 I had a deep dive into PHPUnit, and there were a couple of things that bugged me. Looking into it again, it turns out that since then everything has been fixed, making it perfect for integrating it into sabredav. Most of the protocol-level WebDAV stuff is all tested with litmus, but having good unit tests will help ensuring a high quality of the inner business logic.
He also includes a few "highlights" (pleasant things) he found in this second look like a bootstrap setting, a more perfected code coverage analysis and the inclusion of an XML config file to define them all.