Test-driven development, Test-driven infrastructure, compliance, audit, Quality Assurance. There is a single thread that ties these together - validation of change. As we move toward a more unified development process, let's take a look at the similarities among these concepts. What happens to our understanding of quality if we combine and share efforts by looking at the entire process through the lense of validation driven change.

1. VALIDATION DRIVEN
CHANGE
Created by / / Michael Goetz mpgoetz@chef.io @michaelpgoetz

2. WHO AM I?
Michael Goetz
Solutions Engineering Manager @ Chef
mpgoetz@chef.io
@michaelpgoetz

3. TESTS SUCK
YOURS ARE ESPECIALLY AWFUL
Mine are the worst

4. TDD IS DEAD
I'M NOT QUITE DEAD YET!

5. TEST COVERAGE IS A LIE
And a tool of our oppressors

6. WHY ARE WE KIDDING
OURSELVES?

7. AUTOMATION IS A TEST'S BEST
FRIEND
Image by Lisa Crispin (
)
http://lisacrispin.com/2011/11/08/using-the-agile-testing-
quadrants/

8. WHAT IS A TEST?

9. WHAT IS A CHANGE?

10. HOW DO YOU VALIDATE YOUR
CHANGE?

11. THE 'TYPE AND LOOK'

12. THE 'RED-GREEN'

13. THE 'RED-RED-RED-FUCK-I'LL-
MARK-IT-AS-PENDING'

14. THE 'IT'S PROBABLY FINE'

15. THE 'WE FAILED THE
AUDIT....AGAIN'

16. YOUR JOB ISN'T TO WRITE TESTS
It's to deliver business value to your customers

17. TESTS ARE NOT VALIDATION
Validation: to establish the fitness or worth of a
software product for its operational mission.
Barry Boehm

18. A TALE OF TWO CUSTOMERS
The primary customer is whoever is consuming on
your code - Validation
The secondary customer is you - Test

19. THE PRIMARY CUSTOMER
They don't care if your unit test coverage is at
100% if they can't log in.
Did you write a validation for your primary
customer?
Know how your work contributes to what the
primary customer wants and make sure you have
a validation for it working properly.

20. WHO IS THE PRIMARY
CUSTOMER?
Website visitor
Auditor
API consumers
Management

21. THE SECONDARY CUSTOMER
Protect your hard work. If your change works on
your machine, write whatever test proves it works
if someone else checks it out.
Pick the level of test that proves your work is solid.

22. SO DON'T WRITE TESTS?
Testing the construction is not enough. We also
must validate the expectations of the customer.
Determine what validation or test is necessary to
serve both customers
Create something that automatically confirms that
expectations are met