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