Behavior Driven Development with Drupal
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This document summarizes a presentation about Behaviour Driven Development (BDD) given by Alexandru Badiu. It begins by explaining some of the shortcomings of test-driven development (TDD), such as not being able to test full functionality and refactoring dependency on early tests. It then describes the key features of BDD, including using a common language that all stakeholders can understand, producing tests, documentation, and specifications, and supporting tools like Gherkin and Cucumber. The document provides examples of how BDD is implemented in PHP using Behat and in Drupal using the Behat Drupal Extension. It concludes by inviting the audience to discuss employment opportunities.
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Behavior Driven Development with Drupal
- 2. BEHAVIOUR DRIVEN DEVELOPMENT ALEXANDRU BADIU Drupal developer for 10 years. Drupal Romania founding member. I work at Demotix / Corbis. ! http://alexandrubadiu.ro http://twitter.com/voidberg Drupalcamp Tirgu Mures 2013
- 3. BDD IS A SECOND-GENERATION, OUTSIDE–IN, PULL-BASED, MULTIPLE- STAKEHOLDER, MULTIPLE-SCALE, HIGH- AUTOMATION, AGILE METHODOLOGY.
- 4. BEHAVIOUR DRIVEN DEVELOPMENT WAIT, WHAT?
- 5. BEHAVIOUR DRIVEN DEVELOPMENT TDD’S SHORTCOMINGS • Unit tests, Inside - out. • Write the unit test before the code. • Typically written by the programmer. • Can’t test everything: full functional tests? • Can’t refactor as you wish: dependent on early tests. Drupalcamp Tirgu Mures 2013
- 6. BEHAVIOUR DRIVEN DEVELOPMENT BDD FEATURES • It picks up where TDD leaves off. • Rethinking the approach to unit and acceptance testing. • Uses a common language that everyone can use from all chains of command. • Becomes a test, a piece of documentation, a specification. • Supported by a wide range of tools: Gherkin, Cucumber, Behat, Travis, Jenkins, Jira and so on. Drupalcamp Tirgu Mures 2013
- 7. BEHAVIOUR DRIVEN DEVELOPMENT BDD FEATURES • Test code or describe behaviour? • Both. • TDD is about ensuring behaviour. • BDD is about describing behaviour. Drupalcamp Tirgu Mures 2013
- 8. BEHAVIOUR DRIVEN DEVELOPMENT BDD FEATURES • User story. • Stakeholder, effect, value. • Acceptance criteria or scenarios. • Steps. • Initial conditions. • Triggers. • Outcomes. Drupalcamp Tirgu Mures 2013
- 9. BEHAVIOUR DRIVEN DEVELOPMENT BDD FEATURES Feature: Authentication! ! In order to change my information and add sessions! As a registered Drupalcamp user! I need to be able to authenticate! ! Scenario: User login! Given I am on "/"! When I follow "Log in"! And I fill in "name" with "bddtest"! And I fill in "pass" with "bddtest"! And I press "Log in"! Then I should see "My account" ! ! Scenario: User logout! Given I am logged in! And I am on "/"! When I follow "Log out"! Then I should see "Log in" Drupalcamp Tirgu Mures 2013
- 10. BDD IS A SECONDGENERATION, OUTSIDE–IN, PULL-BASED, MULTIPLESTAKEHOLDER, MULTIPLE-SCALE, HIGH- AUTOMATION, AGILE METHODOLOGY.
- 11. BEHAVIOUR DRIVEN DEVELOPMENT BDD IN PHP • Behat. • OSS. • Cucumber “language”. • Mink for testing web apps. • Different drivers: Selenium, zombie.js, goutte etc. Drupalcamp Tirgu Mures 2013
- 12. BEHAVIOUR DRIVEN DEVELOPMENT COMPOSER.JSON {! "require": {! "behat/behat": "2.4.*@stable",! "behat/mink": "1.5.*@stable",! "behat/mink-extension": "*",! "behat/mink-goutte-driver": "*",! "behat/mink-selenium-driver": "*",! "behat/mink-selenium2-driver": "*",! "behat/mink-sahi-driver": "*",! "behat/mink-zombie-driver": "*",! },! "minimum-stability": "dev",! "config": {! "bin-dir": "bin/"! }! }! Drupalcamp Tirgu Mures 2013
- 13. BEHAVIOUR DRIVEN DEVELOPMENT INSTALL curl http://getcomposer.org/installer | php! php composer.phar install —prefer-source! ! bin/behat —init! ! +d features - place your *.feature files here! +d features/bootstrap - place bootstrap scripts and static files here! +f features/bootstrap/FeatureContext.php - place your feature related code here Drupalcamp Tirgu Mures 2013
- 14. BEHAVIOUR DRIVEN DEVELOPMENT BEHAT.YML default:! extensions:! BehatMinkExtensionExtension:! base_url: http://drupalcamp.ro/! goutte: ~! zombie: ~! sahi:! port: 9999! selenium2:! wd_host: "http://127.0.0.1:4444/wd/hub"! ! default_session: 'selenium2'! javascript_session: 'selenium2'! Drupalcamp Tirgu Mures 2013
- 15. DEMO
- 16. BEHAVIOUR DRIVEN DEVELOPMENT BDD IN DRUPAL • Behat Drupal Extension. • Provides step definitions for common testing scenarios specific to Drupal sites. Drupalcamp Tirgu Mures 2013
- 17. BEHAVIOUR DRIVEN DEVELOPMENT BDD IN DRUPAL composer.json! ! ! ! ! ! "require": {! ! "drupal/drupal-extension": "*"! ! },! behat.yml! ! ! DrupalDrupalExtensionExtension:! blackbox: ~ Drupalcamp Tirgu Mures 2013
- 18. BEHAVIOUR DRIVEN DEVELOPMENT BDD IN DRUPAL Given I am logged in as a user with the "authenticated user" role! ! Then I should see the heading “History"! ! Then I should see the heading "User login" in the "left sidebar" region! ! Given the cache has been cleared! ! When I run cron! ! Drupalcamp Tirgu Mures 2013
- 19. BEHAVIOUR DRIVEN DEVELOPMENT BDD IN DRUPAL Given "page" nodes:! | title |! | Page one |! | Page two |! ! And "article" nodes:! | title |! | First article |! | Second article |! ! Given "article" nodes:! | title | promote | First article with fields | 1 ! Given users:! | name | mail | status | Joe User | joe@example.com | 1 | body |! | PLACEHOLDER BODY |! |! | Drupalcamp Tirgu Mures 2013
- 21. We’re hiring! AngularJS, Node.js. Come talk to me if you’re interested.