Awesome

Extract Till You Drop

Code for my refactoring talk "Extract Till You Drop". See the screencast at http://verraes.net/2013/09/extract-till-you-drop/ (Note that this version of the code has changed since that recording was made.)

Kata

You can do this as a kata. The goal is to cover GroupService with tests, and refactor it into something much nicer along the way.

Rules:

• Don't change the behaviour of the code, unless you have a failing test that proves a bug
• Don't refactor unless the code is covered sufficiently by tests, or when you can use a guaranteed safe refactor (eg the ones that come with PHPStorm).
• Try to express insights about the code in the code
• After 30m or so, compare with other teams, and try again.

Install

Get composer, then run

composer install
bin/phpunit

You should get a warning because there are no tests yet.