Hello!

my name is @matason

Testing

To prove something works as we expect

To know if we've broken something when we make changes

To provide an audit trail of intent

To shorten the feedback cycle

To write better code

To know when we're done

Kent Beck

Test Driven Development

http://blip.tv/railsconf/kent-beck-three-rivers-institute-tri-saturday-keynote-1170018

Dan North

Behaviour Driven Development

http://dannorth.net/introducing-bdd/

"we are not testing that an application functions as we (developers) expect,

but instead

we're testing that it fulfils client business needs"

Konstantin Kudryashov (creator of Behat)

Ingredients

Drupal 7

Composer

Behat

Mink

Goutte

Selenium Server

Drupal Extension

Gherkin

Drupal 7

Drupal is an open source content management platform

http://drupal.org

Composer

Composer is a tool for dependency management in PHP

http://getcomposer.org/

Behat

A PHP framework for testing your business expectations

http://behat.org/

Mink

Provides a consistent API for different browser drivers/libraries

http://mink.behat.org/

Goutte

Goutte is a screen scraping and web crawling library for PHP

https://github.com/fabpot/Goutte

Selenium Server

Browser driver

http://docs.seleniumhq.org/download/

Drupal Extension

Integration layer between Behat, Mink Extension, and Drupal

https://drupal.org/project/drupalextension

Gherkin

A structured language for describing software behaviour

https://github.com/cucumber/cucumber/wiki/Gherkin

Let's bake!

Get Selenium Server

http://docs.seleniumhq.org/download/

Start Selenium

$ java -jar selenium-server-standalone-2.33.0.jar

Create a tests directory

$ mkdir tests
$ cd tests

tests/composer.json

{
  "require": {
    "behat/behat": "2.4.*@stable",
    "behat/mink": "1.4.*@stable",
    "behat/mink-extension": "*",
    "behat/mink-goutte-driver": "*",
    "behat/mink-selenium2-driver": "*",
    "drupal/drupal-extension": "*"
  },
  "minimum-stability": "dev",
  "config": {
    "bin-dir": "bin/"
  }
}

Install Composer

$ curl -sS https://getcomposer.org/installer | php

http://getcomposer.org/doc/00-intro.md

Using Composer

$ php composer.phar install

http://getcomposer.org/doc/00-intro.md

Initialise Behat

$ ./bin/behat --init

which should respond with

+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

tests/behat.yml

default:
  paths:
    features: 'features'
  extensions:
    Behat\MinkExtension\Extension:
      goutte: ~
      selenium2: ~
      base_url: http://drupal7.vm/
    Drupal\DrupalExtension\Extension:
      blackbox: ~

Note: base_url needs to match your environment!

Introducing FeatureContext.php

tests/features/bootstrap/FeatureContext.php

use Drupal\DrupalExtension\Context\DrupalContext;

class FeatureContext extends DrupalContext

Your first test

tests/features/homepage.feature

Feature: description
  As a role
  I want feature
  So that benefit

  Scenario: description
    Given context
    When event
    Then outcome

Your first test

tests/features/homepage.feature

Feature: Homepage
  As a site visitor
  I want see the welcome message
  So that I know I am on the right site

  Scenario: Visitor visits the homepage and observes the welcome message
    Given I am on "/"
    Then I should see "Welcome to localhost"

Your first test

tests/features/homepage.feature

Feature: Homepage
  As a site visitor
  I want see the welcome message
  So that I know I am on the right site

  @javascript
  Scenario: Visitor visits the homepage and observes the welcome message
    Given I am on "/"
    Then I should see "Welcome to localhost"

@javascript causes the test to launch and run in a browser

Code

https://github.com/matason/behat-drupal

Questions?

Resources

https://packagist.org/

The Cucumber Book

Ryan Weaver's Behat talk from Drupalcon Portland