How to achieve a truly fast and reliable continuous delivery by applying Behaviour-Driven Development. Discover how to work as a real Scrum Team and obtain continuous delivery via processes instead of tools. If you liked what you saw, consider following me and checking out my other content on: - https://medium.com/@domenicosibilio - https://twitter.com/domsibilio (Agile O' Day 2019 version)

1. BDD how to achieve fast and
reliable continuous delivery

2. Domenico Sibilio
linkedin.com/in/domenico-sibilio/
domenicosibilio@gmail.com
Consultant
Trainer
Developer
Technical Product Owner
Technical Architect
Who am I?

3. Roadmap
What is BDD?
Why BDD?
BDD vs Traditional Development
Gherkin Syntax
AutomatedTests with Cucumber
BDD Anti-Patterns

4. What is BDD?
(Behaviour-Driven Development)
oAgile software development process
oCollaboration tool

5. BDD is NOT:
oA testing tool
oAn alternative to Test-Driven Development

6. Why should I even bother?
The market does not wait for you!

7. Why should I even bother?
To provide a common language and
build a shared understanding within the ScrumTeam

8. Why should I even bother?
To speed up the delivery process

9. Why should I even bother?
To deliver robust products in a reliable fashion

10. Traditional Development

11. Behaviour-Driven-Development
«Three Amigos»

12. Advantages Recap
Collaboration
Common language
Clearly understood requirements
Automated testing
Exploratory testing
Living documentation
Reduced cycle time
Together Everyone Achieves More

13. What is Gherkin?
A Business Readable, Domain Specific Language that allows us to write
Executable Specifications!

14. Gherkin Syntax: structure
Feature: Dispensing coffee
As a beverage dispenser owner
I want the dispenser to be able to serve coffee
In order to increase the variety of available beverages
# might want to discuss this scenario with John
Scenario: Serving hot coffee
Given the dispenser is loaded with coffee beans
When a customer orders hot coffee
Then the hot coffee is dispensed

15. Gherkin Syntax: and / constants
Scenario: Hot coffee has run out
Given the dispenser has run out of coffee beans
When a customer orders hot coffee
Then the hot coffee is not dispensed
And the customer is refunded 1$
And the display shows “Product not available.”

16. Gherkin Syntax: outline
Scenario Outline: Available beverages are dispensed
Given the dispenser is loaded with <supply>
When a customer orders a <product>
Then the <product> is dispensed
Examples:
| supply | product |
| coffee beans | hot coffee |
| tea bags | hot tea |

17. Gherkin Syntax: table input
…
Given the dispenser is loaded with the following:
| supply | quantity |
| coffee beans | 13 |
| tea bags | 37 |
…

18. Imperative Scenario: What & How
Scenario:The user is shown relevant search results
Given the user navigates to “http://www.google.com“
And the HTTP response code is 200
When the user clicks the input field with name “q“
And the user types “gherkin“
And the user presses the Enter button
Then the user is redirected to a new page
And the search result contains at least 10 pages
And the first result starts with “http://wikipedia.org/“

19. Declarative Scenario: Just What
Scenario:The user is shown relevant search results
Given the user navigates to the home page
When the user searches for the word “gherkin“
Then the user is shown relevant results

20. I want to know more!
https://cucumber.io/docs/gherkin/reference/

21. BDD Anti-Patterns
BA/PO writes scenarios on his own and hands them to the team

22. BDD Anti-Patterns
QE writes scenarios on his own to implement automated tests

23. BDD Anti-Patterns
Three Amigos sessions don't produce usable scenarios

24. BDD Anti-Patterns
Scenarios are usable but cluttered with implementation details

25. References & More
BDD in Action – John Ferguson Smart

26. Domenico Sibilio
linkedin.com/in/domenico-sibilio/
domenicosibilio@gmail.com
Thank you!