BDD and Behat

Get your code acting properly

Who Am I?

Developer/Evangelist at LaunchKey

Founder/Co-Organizer of Las Vegas PHP UG

Co-Organizer of Las Vegas Developer UG

#vegastech enthusiast

Testanista

Author of phpmachinist-behat-extension

What is BDD?

Behavior Driven Development is developing for required application behavior

BDD utilizes tests who’s result are in a plain language understood by the business

BDD uses Extreme Programming (XP) based features and scenarios to accomplish both goals

Why Use BDD?

BDD tests all the things

BDD only tests what matters

BDD makes it easy to understand what’s not working

BDD documents requirements in the system

What is Behat?

PHP implementation of the Cucumber specification

Uses Gherkin as the Domain Specific Language (DSL) to allow for writing tests in plain language

Uses annotations and regular expressions to match steps with underlying code base

Allows for reusable step code

Example Gherkin

Feature: Home Page

Scenario: Login Link Given I am on the homepage When I click " Login" Then I will be on the "LaunchKey | Log in" page

Example Step

/*** @Given /^(?:|I )am on "(?P<url>[^"]*)”$/*/public function goTo($url) { $this->browser->open($url);}

Why Use BDD

Document features

Better requirements

Know what is broken

Know how to reproduce a failure

Have confidence that your application works

Why Use Behat

Generates skeleton step code

Reusable steps without function knowledge

Mink Extension gives client agnostic browser steps

Framework Extensions for server-free testing

A myriad of other extensions

http://www.slideshare.net/AdamEnglander/bdd-and-behat-47848219

http://spkr8.com/t/58531

http://docs.behat.org/

@adam_englander

#launchkey on freenode.net

#vegastech on freenode.net

adam@launchkey.com