Behavior-Driven Development with Behat and Gherkin

Behavior-driven development is an extension of test-driven development that focuses on writing and delivering software that "matters".

Gherkin is a language that allows you document business behavior in a human-readable format. Using Gherkin files, you can use a test-runner like Behat to ensure your application is working the way you and your end users expect.

If done right...it might just be possible to let your clients or product owners write the tests for you!