Cucumber Recipes

Sonik Chopra PMI ACP, PMP Agile Coach, Manager Pitney Bowes Software

Agenda

• Introduction to BDD

• BDD Vs TDD

• Cucumber Features

• Demo: The real power of Cucumber

• Integration with different languages and platforms

Behaviour Driven Development

Implementing an application by describing its behaviour by the perspective of its stakeholders..

Dan North

But don’t we already do this??

What we really do…. As a Retail Customer, I want to withdraw money from my Account so that I can get Money.

Unit Tests

Should_Not_Dispense_When_the_ClientAccount_has_money_lessthan_minimum_amount()

Should_withdraw_Money_When_appropriate_Sum_Found()

Should_Not_Withdaw_Post_Expiry_Date()

Should_Withdraw_Post_Expiry_Date()

Should_Be_A_Valid_User()

Should_Not_Withdraw_When_Negative_Balance()

Should_Be_A_Valid_Account_Type()

Should_Return_Error_When_ATM_Is_Without_Cash()

Restricted view on Behaviour

Difference in thinking

CLIENT CUSTOMER

BUYER

SHOPPER

PUNTER

DEV QA BA CLIENT PO

Increased Ambiguity LOST

BDD – Outside In

VISION

GOAL

FEATURE

STORY

SCENARIO

CODE

Scenarios and Examples in Ubiquitous Language

HAVING CONVERSATION IS MORE IMPORTANT

TALKING THROUGH EXAMPLES HELP DISCOVER

CONSIDERS MULTIPLE STAKEHOLDERS

BDD Vs TDD

• Development Methodology Vs Development Technique

• Business Driven Vs Design Approach

• Customer Writing Tests Vs Developers writing Tests

• Focus on Behavioural Aspect Vs Implementation Aspect

Cucumber Example…

Story:

As a user I want to login with my details So that I can get access to the site

Scenario: User uses wrong password

Given a username 'jdoe' And a password 'letmein' When the user logs in with username and password Then the login form should be shown again

GHERKIN LANGUAGE

Gherkin Supports 40+ Languages.

Cucumber at a glance…

Written in plain English Language using Gherkin

Source Code in Ruby Or Java Or Dot Net etc

DEMO of Cucumber Capabilities

Cucumber for Dot Net

SpecFlow

Iron Ruby

Cuke4Nuke

Cucumber for Java

Cuke4Duke

Webdriver tools

Watir

Selenium

Competitive products

FIT/FITNESS

Robot Framework

Concordian

EasyB

JBehave

Integration with other platforms

• TestBot Or Hydra : Tools used to run Cucumber tests in parallel. You can also use Jenkins and create slave machines.

• Relish: A service to publish cucumber features as documentation

• FactoryGirl GEM: Test Data Builder

• Easy to Integrate with CI environment.

Cucumber Add Ons

Thank You

Sonik Chopra PMI ACP, PMP Agile Coach, Manager Pitney Bowes Software sonikchopra@gmail.com http://in.linkedin.com/in/sonikchopra Twitter: @sonikchopra