Christian Weiske has posted about his experience at this year's TestFest in Belin (as hosted by the Berlin PHP User Group).

I spent the last weekend (may 09/10) on the PHP Testfest Berlin, organized by Till for the Berlin PHP Usergroup. Coming from Leipzig, I don't really know who of the other 8 people were from the user group and who not.

He mentions issues the group faced (OS X being difficult, PHP from CVS not compiling), the intro to testing and their first area of choice - gettext (which they got up to 98.8% coverage!). The second and third efforts were some work done on the intl and sockets extensions.