Extensive WordPress Plugin Unit Testing

Going way beyond just writing up your own unit tests for your WordPress plugin, this presentation covers ways to run the 1,300+ core tests with your plugin enabled, running your plugin tests on Travis CI (fully automated and covering all version environments), and making use of the WordPress core unit testing framework for your plugin's unit tests (clean and complete WP installation with every test, factories, and fake AJAX requests).

https://speakerdeck.com/u/tierra/p/unit-testing-wordpress-plugins