This document discusses Behavior Driven Development (BDD) and the associated tools used for BDD. It describes BDD as a methodology that focuses on behavior over internal structure and eases communication. The BDD cycle involves writing features and scenarios in plain text with steps, and defining those steps in code. Popular BDD tools mentioned are Cucumber for writing system behaviors in plain text and RSpec for testing internal behaviors. The document also briefly discusses using Cucumber scenarios, examples, and email-spec for testing emails.

1. BDD
programming the happy way
by Leon Du
Friday, September 10, 2010

2. Who Am I
• Freelancer / Ruby on Rails developer
@guangzhou
• github.com/leondu
• twitter.com/leondu
• flickr.com/leondu
• leondu@gmail.com
Friday, September 10, 2010

3. Talk about
BDD, aka, Behavior Driven Development
• BDD is a second-generation, outside-in, pull-based, multiple-stakeholder, multiple-scale,
high-automation, agile methodology . It describes a cycle of interactions
with well-defined outputs, resulting in the delivery of working, tested software that matters.
--- from wikipedia.org
• a set of tools
Rspec
Cucumber
Webrat
Capybara
email-spec
Friday, September 10, 2010

4. Methodology
• Change the way of development
• Focus on behavior not only internal
structure
• Ease the difficulty of communication
Friday, September 10, 2010

5. BDD Cycle
Text
---from The RSpec Book
Friday, September 10, 2010

6. ---from The RSpec Book
Friday, September 10, 2010

7. the Tools
• RSpec
for internal behaviors
• Cucumber
for system behaviors
• Webrat/Capybara/email-spec...
for common task steps
Friday, September 10, 2010

8. Cucumber
Friday, September 10, 2010

9. Cucumber
Cucumber
Features
Scenarios
Steps
http://cukes.info/
Friday, September 10, 2010

10. Feature
• Plain text
• Focus on behavior
Friday, September 10, 2010

11. Scenario
• Write Scenario with Given/When/Then
Friday, September 10, 2010

12. Step
Step definition
and is translated to below:
Friday, September 10, 2010

13. Advance topics
Preparing data with Examples
Friday, September 10, 2010

14. Advance topics
Testing email with email-spec
email steps
Friday, September 10, 2010

15. BDD in other world
• Java
Instinct, JDave, JBehave, BDoc...
http://java-sources.org/open-source/bdd
• .Net
StoryQ
http://storyq.codeplex.com/
http://www.codeproject.com/KB/testing/bddintro.aspx
Friday, September 10, 2010

16. Special Thanks To
Rain Chen hirainchen@gmail.com
Friday, September 10, 2010

17. Questions?
Friday, September 10, 2010