This document discusses behavior-driven development (BDD) and how the presenters use it. BDD focuses on writing tests in natural language to describe features from the customer's perspective before writing code. The presenters use tools like Behat and Gherkin to write automated tests in plain language, focusing on collaboration and ensuring development matches business needs. They provide tips on using multiple contexts, page objects, and screenshots in BDD. Alternatives like PhpSpec are also mentioned.

1. S C E N A R I O

2. www.nfq.com
eBusiness Development
DIVING INTO BDD: HOW WE DO IT

3. I N O R D E R T O
•To exchange knowledge
•To share our best practices

4. AS A PRESENTERS
•Darius Kasperavičius
•Karolis Daužickas
•Irmantas Zenkus

5. •To do the presentation
W E WA N T T O
•And to know you

6. T E S T I N G
• TESTS REDUCE BUGS
• TESTS ARE GOOD DOCUMENTATION
• TESTS ALLOW SAFE REFACTORING
TESTS
• REDUCE THE COST OF CHANGE
• TESTING FORCES YOU TO THINK

7. A G I L E T E S T I N G Q U A D R A N T
Q1
Q2 Q3
Q4

8. B D D
BDD (Behaviour Driven Development) is a
synthesis and refinement of practices stemming
from TDD (Test Driven Development) and ATDD
(Acceptance Test Driven Development).

9. B D D P R O S
• Driven by bussiness value (outside-in)
• Requirements and tests are in natural
language
• Adds structrure to TDD
• Collaboration between team members

10. BDD WORKFLOW
• Think and describe a feature
• Red, green, yellow
• Write a failing test
• Write a small amount of production code
• Refactor
• Write a Unit tests along the way

11. OUTSIDE - IN
BDD
Customer Requirements
Customer Requirements
Customer Requirements
Customer Requirements
TDD
BDD

12. Humanshavebeentellingstoriesforthousandsofyears.

13. S T O R Y
Story in BDD helps ensuring that development
team has understanding of business on the same
level that client does

14. Simplicity is the ultimate sophistication

15. 1. For who?
2. What?
3. How?

16. R O L E S
By specifying the role within the narrative, you
know who to talk to about the feature

17. B D D I N

19. S C H E M A
Foxrate
Application
Foxrate API Foxrate AKZ Plugins
Builds SDK
Tests SDK
Builds Modules
(FI)Runs tests
Deploys to markets

21. B E H A T
Behat is an open source behavior-driven
development framework for PHP 5.3 and 5.4.
What is behavior-driven development, you ask?
It’s the idea that you start by writing human-
readable sentences that describe a feature of your
application and how it should work, and only then
implement this behavior in software.

22. We are not testing that application functions as we
(developers) expect it to, but instead we’re testing
that it fullfils clients business needs.
Behat by example by Konstantin Kudryashov

23. You might think about Behat as a tool to
teach your clients about testing, but in reality
it's a tool to teach you about client
business.

24. B E H AT I N S TA L AT I O N
"require-dev": {
"behat/behat": "3.*@stable",
"behat/mink-extension": "*”,
"behat/mink": "1.5@stable",
"behat/mink-selenium2-driver": "*",
"behat/common-contexts": "*@dev",
"phpunit/phpunit": "4.*@stable",
"sensiolabs/behat-page-object-extension":
"dev-master",
"ocramius/proxy-manager": "~0.5"
}
composer update
bin/behat --init

25. B E H A T E X A M P L E
• Gherkin
Narrative
Scenario
Scenario
details

26. B E H A T E X A M P L E
• Gherkin
Events
Context
Outcome
Benefit
Role
Feature

27. B E H A T E X A M P L E
• FeatureContext

28. BEHAT 3: WHAT’S NEW?
• Implements SnippetAcceptingContext
• Turnip mathching (@Given My name is
:name). Regex is still supported.
• Output in code
• Cleaner and more structured output (shows
exactly wher it failed)
• Error out levels

29. T I P S

30. U S E M U LT I P L E C O N T E X T S
public function __construct(array $parameters)
{
$this->useContext('subcontext_alias', new AnotherContext());
}

31. U S E SY M FO N Y 2 E X T E N S I O N

32. U S E PA G EO B J E C T B U N D L E

33. ADD SCREENSHOTS
On fails
On visual validation

34. USE EXTERNAL ASSERTATION TOOL
PhpUnit / PhpSpec

35. A L T E R N A T I V E S
PhpSpec
JS?

36. Behat deals to have specifications that
reflects the environment from the
outside.
PHPSpec responds to the behaviour in
the lower level, from the internal of
the classes.
PHPSpec is considered a tool that
helps you to develop.
InternalExternal
B E H A T V S P H P S P E C

37. Q U E S T I O N S ?

38. Resources
http://dannorth.net/introducing-bdd/
http://dannorth.net/whats-in-a-story/
http://alistair.cockburn.us/Use+case+fundamentals
http://everzet.com/post/35632192627/great-talk-about-why-newcomers-get-bdd-
wrong
http://dannorth.net/2012/05/31/bdd-is-like-tdd-if/
http://welcometothebundle.com/it-is-all-about-behaviour-also-in-php/
http://welcometothebundle.com/best-resources-about-symfony-tdd-bdd-ddd-
methologies/
http://www.agile-doctor.com/2012/03/06/10-reasons-why-bdd-changes-everything/
https://github.com/Behat/en-mink.behat.org/blob/master/index.rst#find-methods
http://guide.agilealliance.org/guide/bdd.html
http://vimeo.com/43612884
http://welcometothebundle.com/phpunit-vs-phpspec-theory-on-behaviour-driven-
development/
http://elephantintheroom.io/blog/2013/11/episode-5-test-first-after-and-beyond/
https://speakerdeck.com/everzet/behat-by-example
Gojko Adzic Specification by Example: How Successful Teams Deliver the Right
Software

39. Klausimai
https://github.com/dardarlt/bdd-tools
darius@foxrate.de
irmantas.zenkus@hometogo.de