1. Specification by example

2. What’s the problem?

6. Accidental Adversaries

8. Useless Crap

9. Business Failure
Useless Crap

10. Business Failure
Useless Crap
Maintenance Nightmare

11. Business Failure
Business Success
Useless Crap
Maintenance Nightmare

12. Specification by example
Business Failure
Business Success
Specification by example
Useless Crap
Maintenance Nightmare

13. Specification by example

14. Deriving scope from goals

15. Derive the scope: User Stories

16. Specify collaboratively

17. Refining the specification

18. Refining the specification
“Specifications with examples are acceptance tests”
Gojko Adzic
Be sure spec is testable
Focus on business functionality not design
Avoid UI details
Avoid covering every possible combination

19. Refining the specification
Illustrating by examples
Feature: Free delivery
In order to save money As a VIP customer I want the system to offer free delivery on certain items to me

20. Refining the specification
In order to minimize the chances of misunderstanding, we write scripts in terms of Given -> When -> Then.
Scenario: Free delivery
Given I am a VIP customer
And I am on product detail page
And There are only books in my shopping cart
And There are <= 10 books in my shopping cart
And I have added 'ABC Press' book to my shopping cart When I press 'Go to checkout' button
And I have chosen 'Moscow' in 'Ship To' dropdown
Then I can choose free delivery

21. Automating examples Start small
Select important examples for automation
Plan up-front to automate
Avoid using pre-populated data
Refactor your tests from time to time
Validate frequently

22. Living documentation Keep specifications short Evolve specifications
Make documentation accessible
Organize the documentation
Put specifications under version control