This document discusses Behavior Driven Development (BDD), an evolution of Test-Driven Development (TDD). BDD focuses on designing tests before implementation based on customer needs using a single language. It aims to improve software design, testability and decrease bugs through executable documentation and acceptance tests written by domain experts rather than developers. A list of common BDD tools is also provided.

1. BDD
Volodymyr Derkach

2. Test-Driven Development (TDD)
write Test
make it
compile
Test FailTest Pass
Refactoring
think more about
design
Implement

4. Test-Driven Development (TDD)
● Facilitates Software Design & Testability
● Decrease bugfix time on Dev/QA phase
● Express Software Behaviour

5. Behaviour Driven Development (BDD)

12. Behaviour Driven Development (BDD)
● All TDD benefits inherited
● Think more before implementing
● One language for customer & devs
● Executable documentation
● Tests written by Domain Expert not Dev
● Stories as Acceptance Tests, later
regression
● Stories as Demo

13. Tools
● beanSpec
● concordion.org
● cukes.info
● easyb.org
● fitnesse.org
● code.google.com/p/givwenzen
● code.google.com/p/instinct
● jbehave.org
● jdave.org
● code.google.com/p/spock
● code.google.com/p/tumbler-glass