Slides from the STARWEST2012 Lightning Keynote "Why You Should Try Testing First" (Nate Oster). This was a 5 minute time-boxed "lightning talk" moderated by Lee Copeland.

1. Licensed under a Creative Commons Attribution-NoDerivs 3.0 Unported License
Why you should try
Testing First…
Nate Oster
STARWEST 2012
nateoster@codesquads.com
@nateoster

2. ACCEPTANCE
TEST-DRIVEN
DEVELOPMENT
NateOster@CodeSquads.com

3. Great Reasons!
• It kills werewolves.
• All the cool kids are doing it.
• It’s part of this balanced breakfast.
• Superhuman strength.
NateOster@CodeSquads.com

4. Waterfall Testing
Release!
DEV
TEST
NateOster@CodeSquads.com

5. Waterfall Testing
Late!
DEV
TEST
BUG-FIX
NateOster@CodeSquads.com

6. Old habits die hard
SPRINTS
TEST
NateOster@CodeSquads.com

7. Agile Means Incremental Testing
SPRINTS
NateOster@CodeSquads.com

8. Mini-Waterfall Testing
2 week sprint
DEV
Sprint Planning
Retrospective
Sprint Demo
TEST
NateOster@CodeSquads.com

9. Mini-Waterfall Testing
2 week sprint
DEV
Sprint Planning
Retrospective
Sprint Demo
TEST
NateOster@CodeSquads.com

10. Backpressure!
2 week sprint
DEV
Sprint Planning
Retrospective
Sprint Demo
TEST
NateOster@CodeSquads.com

11. Micro-Waterfall
Micro-Incremental Testing
2 week sprint
Define Define Define
Build Test Build Test Build Test
Sprint Planning
Retrospective
Sprint Planning…
Sprint Demo
Define Define
Build Test Build Test
Define Define Define
Build Test Build Test Build Test
NateOster@CodeSquads.com

12. Could we
test first?
fail fast?
NateOster@CodeSquads.com

13. ACCEPTANCE
TEST Yellow
Refactor Red
Green
NateOster@CodeSquads.com

14. Verification Specification
NateOster@CodeSquads.com

15. DEFINEEXAMPLES
USE CONCRETE
DONE.
REDUCE GUESSING
STOP GOLD-PLATING DO LESS.
GET FAST FEEDBACK. FINISH OFTEN
CHANGE QUICKLY
BE CLEAR. FOCUS ON
ESSENTIALS
NateOster@CodeSquads.com

16. rework velocity
scrap feedback
handoffs confidence
NateOster@CodeSquads.com

17. Craft a Test-First Experiment
Start small
Hypothesize the outcome
Get fast feedback
Ask WHY.
NateOster@CodeSquads.com

18. Licensed under a Creative Commons Attribution-NoDerivs 3.0 Unported License
You can test first.
Nate Oster
STARWEST 2012
nateoster@codesquads.com
@nateoster