Behavior Driven Development Getting Started With

Lee Brandt Sexy Gorilla 10 Yrs Programming Early .NET Betas TDD / BDD Enthusiast Movie Quote Guru Examinetics Solutions Architect Currently: [email_address] www.codebucket.org Twitter: leebrandt DISCLAIMER: My opinions are mine, not my employer’s , not Geeks with Blogs’. Blame me.

Don’t we already have TEST Driven Development?

TDD’s Intent

What actually happened.

Test Fixture Class

TDD Comes Up Short not the intent the language misleads not about testing

BDD is NOT something new

BDD is a shift in TDD language that helps guide you to do TDD the way it was meant to be done.

TDD DDD BDD

UBIQUITOUS LANGUAGE

Scrum, Kanban & XP OH MY! User Stories Role – Goal – Motivation As a [Role] I need to [Goal] so that [Motivation] As an Account Holder I need to be able to withdraw funds so that I have cash. Scenarios Context – Action – Observation Given [Context] When [Action] Then [Observation] Given the account is in credit for the amount requested when a withdrawal is made the system should debit my account, the system should dispense the cash, and the system should return the card. LANGUAGE All about expressing the user’s needs and what it means to the user to have those needs filled.

User Stories

Role – Goal – Motivation

As a [Role] I need to [Goal] so that [Motivation]

As an Account Holder I need to be able to withdraw funds so that I have cash.

Scenarios

Context – Action – Observation

Given [Context] When [Action] Then [Observation]

Given the account is in credit for the amount requested when a withdrawal is made the system should debit my account, the system should dispense the cash, and the system should return the card.

LANGUAGE

All about expressing the user’s needs and

what it means to the user to have those needs filled.

Test File Test Fixture Fixture Setup / Test Setup Test Specification Concern Context Observation

DEMO

User Interface Integration Web Interface User Interface Layer Presentation Layer Domain Objects Services Persistence Windows Interface Data Access Layer Service Layer

Specifications

DEMO

SpecUnit.Net Scott Bellware Nbehave JBehave Google Code NSpec Tim Haughton Nspecify Maruis Marais MSpec Part of MultiFunctionMachineMachine Aaron Jensen & Jacob Lewallen Frameworks

SpecUnit.Net

Scott Bellware

Nbehave

JBehave

Google Code

NSpec

Tim Haughton

Nspecify

Maruis Marais

MSpec

Part of MultiFunctionMachineMachine

Aaron Jensen & Jacob Lewallen

People Dan North Liz Keogh Dave Astels Scott Bellware Aaron Jensen Jacob Lewallen Tim Haughton

Dan North

Liz Keogh

Dave Astels

Scott Bellware

Aaron Jensen

Jacob Lewallen

Tim Haughton

WWW.CODEBUCKET.ORG Lee Brandt Email: leebrandt@gmail.com Twitter: leebrandt Thank You References: Papers http://behaviour-driven.org http://dannorth.net/introducing-bdd/ Videos http://domaindrivendesign.org/events/oopsla2007/dan_north/ http://video.google.com/videoplay?docid=8135690990081075324 Blogs http://techblog.daveastels.com/ http://lizkeogh.com/ http://dannorth.net/

Lee Brandt

Email: leebrandt@gmail.com

Twitter: leebrandt

Papers

http://behaviour-driven.org

http://dannorth.net/introducing-bdd/

Videos

http://domaindrivendesign.org/events/oopsla2007/dan_north/

http://video.google.com/videoplay?docid=8135690990081075324

Blogs

http://techblog.daveastels.com/

http://lizkeogh.com/

http://dannorth.net/