BDD with Behat and Symfony2

Behaviour DrivenDevelopmentTesting with Behat

Kate LanyonBusiness Analyst @ elabor8PHP, Symfony, iOS developerAgency / Start up background@katalisha

Introduction to BDDRequirements & tests in natural languageAdds a structure to Test Driven DevelopmentCollaboration between developers and non-techiesDriven by business value (outside-in)

Writing Tests is Hard What should I test? How should I name this test? What is a unit? Where do I start

Write Behaviours InsteadDescribes a FeatureIncludes ScopeAssists PrioritisationCan be EstimatedCommon deﬁnition of“Done”

Example: ATM

Behat: BDD for PHPInspired by Ruby Cucumber & GherkinPHP 5.3Built on Symfony 2 Components Standalone Plugin for symfony 1.4 Bundles for symfony 2

More BehatDeﬁne a featureDeﬁne a scenarioRun tests - failBuild featureRun tests - success

Deﬁne a FeatureFeature: In Order to [A] A - The business value As a [B] B - The persona I need to [C] C - Description of feature

Deﬁne a Feature - ExampleCreate features/ls.feature

Deﬁne ScenariosScenario Given [D] D - The initial context When [E] E - A user or other event Then [F] F - What should happen (acceptance criteria) As many as needed to describe the feature

Deﬁne Scenarios - Example

Steps: The Secret SauceCodeRegex to grab test valuesUse any assertion tool (PHPUnit, PHP Exceptions)

StepsAcceptance tests go here in code Passed Pending - BehatBehatExceptionPending Undeﬁned Ambiguous Failed - Exception() Skipped - following a non-passing step

Example

Behat Symfony BundleInstall behat & gherkinInstall behat bundleapp/console -e=test behat --init @AcmeDemoBundleapp/console -e=test behat @AcmeDemoBundleapp/console -e=test behat -dl @AcmeDemoBundle

Resourceshttp://docs.behat.org/quick_intro.htmlhttp://dannorth.net/whats-in-a-story/http://symfony.com/video/Paris2011/576http://www.odino.org/378/behaviour-driven-development-in-phphttp://docs.behat.org/cookbook/bdd_in_symfony2_with_behat_mink_and_zombiejs.htmlhttps://github.com/katalisha/behat-tutorial

BDD with Behat and Symfony2

by katalisha

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