Bdd and Behat
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This document discusses Behavior Driven Development (BDD) and the Behat testing framework. BDD develops applications based on required behaviors and uses tests written in plain language. Behat is a PHP implementation of BDD that uses the Gherkin language to write tests and annotations to match steps to code. Behat generates skeleton step code, allows reusable steps, and has extensions for different environments and frameworks.
![Example Step
/**
* @Given /^(?:|I )am on "(?P<url>[^"]*)”$/
*/
public function goTo($url) {
$this->browser->open($url);
}](https://image.slidesharecdn.com/bddandbehat-150507050104-lva1-app6892/85/Bdd-and-Behat-7-320.jpg)
Bdd and Behat
- 2. 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
- 3. 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
- 4. 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
- 5. 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
- 6. 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
- 7. Example Step /** * @Given /^(?:|I )am on "(?P<url>[^"]*)”$/ */ public function goTo($url) { $this->browser->open($url); }
- 8. Why Use BDD Document features Better requirements Know what is broken Know how to reproduce a failure Have confidence that your application works
- 9. 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