devsmeetup freiburg: behavior driven development with behat/mink

BDD - Behavior Driven Development

with Behat/Mink

Developers MeetUp Freiburg 06/2013

Developers MeetUp Freiburg

Developers MeetUp Freiburg

Steffen Müller

/gebrüderheitz GmbHPHP Software Architect + Developer

@t3node // www.t3node.com

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Case Study

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“Simple” order form

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Related functional tests (Selenium)

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How the complexity felt like

Image by Kyle Lease CC BY-SA 2.0 http://www.flickr.com/photos/kl75214/

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Focus on requirements

instead of high coverage

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Behavior Driven

Development

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Behavior What?

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Analyze

Concept

Test

Coding

Linear progress

Sketch inspired by J. B. Rainsberger:http://www.jbrains.ca/permalink/how-test-driven-development-works-and-more

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Analyze Concept

Test Coding

Continuous Iteration

Shortcycles

Sketch inspired by J. B. Rainsberger:http://www.jbrains.ca/permalink/how-test-driven-development-works-and-more

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BDD

Building the

right things

TDD

Building the

things right

TDD or BDD?

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Communication

Images by Alberto Sanchis (MisteryCat)http://misterycat.deviantart.com/

Stakeholder

Developer

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Ubiquitous Language

User

Customer

Unregistereduser

New customer

Images by Alberto Sanchis (MisteryCat)http://misterycat.deviantart.com/

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Feature Description

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“As a [role]

I want [feature]

so that [benefit]”

Feature Description

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“As a [role]

I want [feature]

so that [benefit]”User Story

Feature Description

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“As a customer

I need a shopping cart

to check my selected products”

Example Feature Description

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Scenarios / Use cases

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Scenario: [Use Case]

Given... [Context]

When... [Event]

Then... [Result]

Scenario

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Scenario: See selected products in the

shopping cart

Given I visit the FooBar shop

And I add a “dishwasher” to my cart

When I go to the shopping cart

Then I should see a “dishwasher”

Example Scenario

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Scenario: Find a product in the shopping basket

Given I visit the FooBar shop

And I select a “dishwasher”

When I go to the shopping basket

Then I should see a “dishwasher”gherkinExample Scenario

gherkin

Clearly structured language

Easy to understand

Easy to rephrase

Straightforward syntax

Executable steps

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Developers MeetUp Freiburg

BehatA php framework for testingbusiness expectations

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MinkAcceptance test frameworkfor web applications, written in PHP

BehatA php framework for testingbusiness expectations

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Live Demo

Resources

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

Behat/Mink:http://behat.org/

bInit: kickstarter package for Behat:https://github.com/t3node/binit

Wynne + Hellesøy (2012):“The Cucumber Book”

Developers MeetUp Freiburg

Developers MeetUp Freiburg

Thank You!

If you need BDD + Behat/Mink support, send me a mail:

Steffen Müller <bdd@t3node.com>