On the Engine Yard blog today they've posted a conversation about testing between Ed Finkler and Chris Hartjes (also the hosts of the DevHell podcast).

Our friends Ed Finkler and Chris Hartjes recently had a chat about testing in PHP. Read on to get the low down on different testing tools and their relative merits–check it out as Ed and Chris weep for the future, come to some interesting conclusions and get their hands dirty so you don’t have to.

They talk some about the current tools for unit testing in PHP applications and show what a sample test looks like. Ed talks about how the current testing tools can make it intimidating for people to get started testing and mentions the built-in testing library in Python that is a bit easier. There's also some mention of acceptance/functional testing and the Behat + Mink combo.