A few days ago I was looking for an easier way for automating my PHPUnit testing in Symfony2 and stumbled into this totally awesome tool: MakeGood.
So, what does it do? If a few words, it is a "continuous testing tool", meaning that it is able to execute all your tests in background whenever any file in the project changes (as this is a potential cpu-killer feature, it can be easily disconnected and you will still be able to launch the tests manually).
It is fully integrated with Symfony2 but I stumbled into a few pitfalls while trying to make it work. I finally I succeeded and fell like writing it down, both for future reference and to help out others.
