PHP unit testing WordPress?

There is nothing stopping you from writing your own unit testing for themes/plugins using PHPUnit or some other testing platform.

As for WordPress, it has an official Unit Tests here:

There are several build scripts that can automate unit testing found here, including WP-CLI that have built in unit testing, though you have to obviously write your own code.

I also found this plugin today via scibu’s twitter rant 🙂
http://wordpress.org/extend/plugins/razor/
There are a few more in the repo:
http://wordpress.org/extend/plugins/tags/phpunit

Also check out this: Tutorials for Unit-Testing in WordPress and for unit-test.svn.wordpress.org?

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