Test Driven Development
October 2009
Daniel Wildt
http://danielwildt.com

1

http://agilemanifesto.org/

A possible focus looking
at Agile Methodologies
Strategy / Culture
Lean
Tactical / Procedures Scrum / eXtreme Programming
Operational / eXtreme Programming
Execution

Lean – 5 principles
•Value
• Value Stream
Mapping
• Continuous Flow
• Pull Process
• Perfection

Lean Software Development
1. Eliminate Waste
2. Amplify Knowledge
3. Build with quality
4. Defer decisions
5. Deliver Fast
6. Respect People
7. Continuous Improvement
8. Optimize the whole
http://www.poppendieck.com/

Lean

http://www.xprogramming.com/xpmag/whatisxp.htm

2

Expectations! ☺

Focus on fixing defects prevention!
Zero Defect FOR FINAL USERS!

Learning Curve
http://www.flickr.com/photos/pookhy/3522769044/

Testing, Testing, Testing
http://www.ambysoft.com/essays/floot.html

Write a User Story
As a <role / who?>
I can <need/what?>
So that <benefit / why?>
With Acceptance Criteria (1+)
Given that <input>
When <action>
Then <expected result>
Acceptance Criterias will prepare
your mind for testing

Prove ideas with CODE!
Show results with Coverage Results!
Regression test your code with
test code!

Selenium IDE
JUnit

Write a test that fails
Make the test pass
Refactor your code
Do this cycle until you
don’t have anything else to
test.

More on User Stories
http://xp123.com/xplor/xp0308/index.shtml
More on Test driven development
http://www.agiledata.org/essays/tdd.html
Extra: Behavior Driven Development
http://dannorth.net/introducing-bdd

Questions?