The document outlines a session on behavior-driven development (BDD) at a VodQA event in Hyderabad, focusing on its principles and hands-on workshops. It contrasts BDD with test-driven development (TDD), explaining how BDD involves collaboration among business analysts, product owners, and developers to define system behavior using natural language. It also highlights popular BDD frameworks and features of the Gauge tool, promoting simplicity, maintainability, and speed in testing.

1. Gauge your BDD Tests
vodQA Hyderabad 2015
Shivaling
Apoorva M
Mahendra Kariya

2. Agenda
● Discussion about BDD (15 mins)
● Hands-on workshop (75 mins)
● Advanced Features Demo (15 mins)
● Q & A (15 mins)

3. #vodqa
#thoughtworks
@getgauge

4. What is TDD?
Test-driven development (TDD) is a technique for
building software that guides software development by
writing tests first.
- Martin Fowler

5. TDD (Contd…)
● Req: Calculation engine to be able to add 2 numbers
● Tests
○ @Test
shouldAddPositiveNumbers() {
assertEquals(calculator.add(1, 2), 3);
}
○ @Test
shouldAddNegativeNumbers() {
assertEquals(calculator.add(-1, -2), -3);
}
○ @Test
shouldAddNumbersInWords(){
assertEquals(calculator.add(“one”, “two”), 3);
}

6. So, BDD then?
People are moving towards BDD
But what is BDD?

7. When asked what is BDD
● It’s just TDD right?
● That Given-When-Then thing
● Business driven development
● The BA/PO writes the requirements and then the devs
write tests

8. A collaborative way to define what behaviour in a system
should be tested, by using the same language (natural
language) and grammar used to capture the business need.
BDD is...

9. The Requirement
As a [Role]
I want [Feature]
So that I receive [Value]
As an online shopper
I want to search for products
So that I can make buying decision

10. The Test
Given [Context]
When [Event Occurs]
Then [Outcome]
Given that I have logged in
When I search for a product
Then list of related items are displayed

11. A Badly Written Test
Given that I am on the home page
When I click on the “login” link
And I type text “Mahendra” in the “name” text box
And I type “pwd” in the “password” text box
And I click the “login” button
Then I can see my profile

12. A Well Written Test
Given I land on the homepage
When I log into my account with username “Mahendra” and
password “pwd”
Then I am on the “profile” page

13. Another Well Written Test
● Open Home Page
● Login with with username “Mahendra” and password
“pwd”
● “Profile” page is displayed

14. Popular BDD testing frameworks
● Cucumber (https://cucumber.io)
● Jasmine (http://jasmine.github.io)
● JBehave (http://jbehave.org)
● Concordian (http://concordion.org)
● easyb (http://easyb.org)

15. In a tool we want...
● Simplicity
because who doesn’t like simple!!
● Maintainability
because everyone has been on a long running project and we
know it is hell to keep tests working
● Customisability
because we all have our own preferences
● Speed
because we all have that need for speed

16. What if we want to break away from every form of
syntax and write specifications in natural
language?
Like you’d write an email

17. http://getgauge.io

18. About Gauge
● Open Source
● Simple Markdown syntax
● Multiple Language Support (Java, C#, Ruby)
● First class parallel execution support
● Extensible and Hackable
● IDE support (IntelliJ, VS, Eclipse)
● First class CI / CD integration support

19. Hands - on Workshop

20. Advanced Features Demo
● Table driven execution
● Data Store
● Tags & tag expressions
● Execution hooks
● Parallel Execution
● Concepts

21. Suggested Reading
● http://dannorth.net/introducing-bdd/
● http://behaviourdriven.org/
● http://guide.agilealliance.org/guide/bdd.html
● http://dannorth.net/2012/05/31/bdd-is-like-tdd-if/
● http://lizkeogh.com/behaviour-driven-development/
● http://lizkeogh.com/2012/05/30/showcasing-the-language-of-bdd/
● http://benmabey.com/2008/05/19/imperative-vs-declarative-scenarios-in-
user-stories.html

22. THANK YOU
For questions or suggestions:
vodqa-hyderabad@thoughtworks.com
getgauge@googlegroups.com
@getgauge
http://getgauge.io