PhpSpec is a toolset for building out testable pieces of functionality strictly designed to meet (and only meet) the project requirements that you have made explicit. Identify your inputs, test your expected outputs. That's it.

Wait! Don't go.This isn't a look-at-this-cool-tool talk. This is a live identity crisis, with a demo. How do we as developers mature our skills and deliver testable, functional code while we continue to work on Drupal 7? 

Alice in Wonderland is about an identity in flux. It is about encountering strange things and letting them change your thinking. PhpSpec will be that strange wonderful thing that asks you uncomfortable questions. Break the rules. Leave behind your "I am a Drupal Developer" identity. Think about writing better code and modernizing your developer skills.