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BEHAVIOUR DRIVEN
DEVELOPMENT
ALEXANDRU BADIU
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
BDD IS A SECOND-GENERATION,
OUTSIDE–IN, PULL-BASED,
MULTIPLE- STAKEHOLDER,
MULTIPLE-SCALE, 	

HIGH- AUTOMATION, 	

AGILE METHODOLOGY.
BEHAVIOUR DRIVEN DEVELOPMENT
WAIT, WHAT?
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
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
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
BEHAVIOUR DRIVEN DEVELOPMENT
BDD FEATURES

• User story.	

• Stakeholder, effect, value.	

• Acceptance criteria or scenarios.	

• Steps.	

• Initial conditions.	

• Triggers.	

• Outcomes.
Drupalcamp Tirgu Mures 2013
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
BDD IS A SECONDGENERATION, OUTSIDE–IN,
PULL-BASED, MULTIPLESTAKEHOLDER, MULTIPLE-SCALE, 	

HIGH- AUTOMATION, 	

AGILE METHODOLOGY.
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
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
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
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
DEMO
BEHAVIOUR DRIVEN DEVELOPMENT
BDD IN DRUPAL

• Behat Drupal Extension.	

• Provides step definitions for common testing scenarios
specific to Drupal sites.
Drupalcamp Tirgu Mures 2013
BEHAVIOUR DRIVEN DEVELOPMENT
BDD IN DRUPAL
composer.json!

!
!
!
!
!

"require": {!
! "drupal/drupal-extension": "*"!
!
},!

behat.yml!

!
!

DrupalDrupalExtensionExtension:!
blackbox: ~

Drupalcamp Tirgu Mures 2013
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
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
THANK YOU
Alexandru Badiu

ALEXANDRUBADIU.RO
We’re hiring!	

AngularJS, Node.js.	

Come talk to me if you’re interested.

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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.
  • 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.