So you’ve probably heard of ZenTest/Autotest, right?

In case you haven’t, it is a Ruby gem that (among other things) automatically runs your tests whenever it notices that a file in you project has changed. It’s a great productivity boost, because it saves you from having to run your tests each time you make a change to your program. The perfect tool if you are doing TDD.

So I wanted to get this autotest functionality going for projects in other languages - like PHP, for example - but apparently ZenTest/Autotest only works within Ruby projects.

Talking to the EnvyLabs’ guys I was told about Watchr, a Ruby gem that monitors files matched by a regular expression and triggers a user defined command whenever a file changes. That’s enough to get you started in an autotest-like tool for PHP - or just about any other language.

I’ve setup an example PHP project of Watchr playing an autotest role in a PHP project:

View on Vimeo.

The source code from this example can be seen at http://github.com/caike/watchr_running_php