BDD with Gauge

Gauge your BDD Tests

vodQA Hyderabad 2015

Shivaling

Apoorva M

Mahendra Kariya

Agenda

● Discussion about BDD (15 mins)

● Hands-on workshop (75 mins)

● Advanced Features Demo (15 mins)

● Q & A (15 mins)

#vodqa

#thoughtworks

@getgauge

What is TDD?

Test-driven development (TDD) is a technique for

building software that guides software development by

writing tests first.

- Martin Fowler

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);

}

So, BDD then?

People are moving towards BDD

But what is BDD?

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

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...

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

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

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

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

Another Well Written Test

● Open Home Page

● Login with with username “Mahendra” and password

“pwd”

● “Profile” page is displayed

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)

In a tool we want...

● Simplicitybecause who doesn’t like simple!!

● Maintainabilitybecause everyone has been on a long running project and we know it is hell to keep tests working

● Customisabilitybecause we all have our own preferences

● Speedbecause we all have that need for speed

What if we want to break away from every form of syntax and write specifications in natural

language?

Like you’d write an email

http://getgauge.io

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

Hands - on Workshop

Advanced Features Demo

● Table driven execution

● Data Store

● Tags & tag expressions

● Execution hooks

● Parallel Execution

● Concepts

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

THANK YOUFor questions or suggestions:[email protected]

[email protected]

@getgauge

http://getgauge.io