behaviour driven development with cucumber, groovy and grails

BEHAVIOUR DRIVEN DEVELOPMENTBEHAVIOUR DRIVEN DEVELOPMENTUSING CUCUMBER JVM AND GROOVYUSING CUCUMBER JVM AND GROOVY

reveal.js - The HTML Presentation Framework http://localhost/cucumber/

1 of 37 10/09/14 21:46

ABOUT MEABOUT ME

MARCO VERMEULENMARCO VERMEULEN

Love Coding!Worked for Shazam, Associated Newspapers, Burberry, VisaCurrent: Equal Experts at HMRCCreator of GVM (Groovy enVironment Manager)Blog: Twitter: @marcoVermeulen

Wired for Code

2 of 37 10/09/14 21:46

ABOUT THE TALKABOUT THE TALK

BDD in a NutshellThe Good and Bad of BDDCucumber as solutionMini Cucumber DemoGrails Cucumber PluginSample ApplicationThis talk: http://bit.ly/1uIYrEm

3 of 37 10/09/14 21:46

ABOUT THE DEMOABOUT THE DEMO

INVADER ZIMINVADER ZIM

4 of 37 10/09/14 21:46

American CartoonCreated by Jhonen VasquezOn Nickelodeon from March, 2001Discontinued, with Cult following!Theme of IMPENDING DOOM!Characters: Zim and GIRAvailable on GitHub

5 of 37 10/09/14 21:46

ABOUT THE DEMOABOUT THE DEMO

INVADER ZIMINVADER ZIM

6 of 37 10/09/14 21:46

ZIM AND GIRZIM AND GIR

7 of 37 10/09/14 21:46

BDD DEFINEDBDD DEFINED

Straight from the horse's mouth:

8 of 37 10/09/14 21:46

BDD IN A NUTSHELLBDD IN A NUTSHELL

Using Examples

at multiple levels

to create a shared understanding

and surface uncertainty

to deliver software

that matters!

9 of 37 10/09/14 21:46

SO WHAT?SO WHAT?Collaborate on Specifications.Write Gherkin.Execute Specifications.Watch tests go Pending.Write the Step Defs.Watch tests Fail.Write Application Code.Watch tests Pass!

10 of 37 10/09/14 21:46

BAD WRAPBAD WRAP

An Orphan

Marketing Hype

ATDD (Acceptance Test Driven Development)

Lost it's Zing!!!

11 of 37 10/09/14 21:46

CUCUMBER MISUNDERSTOODCUCUMBER MISUNDERSTOOD

12 of 37 10/09/14 21:46

GOOD VIBRATIONSGOOD VIBRATIONS

TDD Evolved

Inspires Collaboration (3 Amigos)

Behaviour vs Implementation

Outside In development

Living Documentation

Abundance of Tools

Simples!

13 of 37 10/09/14 21:46

ABUNDANCE OF TOOLSABUNDANCE OF TOOLS

JBehave

Concordian

Fitnesse

Spock?

Jasmine (for JavaScript)

Cucumber

14 of 37 10/09/14 21:46

CUCUMBER AND GRADLECUCUMBER AND GRADLE

15 of 37 10/09/14 21:46

CUCUMBER AND GRADLECUCUMBER AND GRADLE

AN ANATOMYAN ANATOMY

DependenciesJUnit Test RunnerGherkinStep DefinitionsHooksTags

16 of 37 10/09/14 21:46

CUCUMBER ANATOMYCUCUMBER ANATOMY

DEPENDENCIESDEPENDENCIES

build.gradle

repositories { jcenter()}

dependencies { compile 'org.codehaus.groovy:groovy:2.3.6' testCompile 'junit:junit:4.11' testCompile 'info.cukes:cucumber-groovy:1.1.8' testCompile 'info.cukes:cucumber-junit:1.1.8'}

17 of 37 10/09/14 21:46

TEST RUNNERTEST RUNNER

src/test/groovy/RunCukeTests.groovy

import cucumber.api.CucumberOptionsimport cucumber.api.junit.Cucumberimport org.junit.runner.RunWith

@RunWith(Cucumber)@CucumberOptions( format=["pretty", "html:build/reports/cucumber"], strict=true, features=["features"], glue=["src/test/steps"])public class RunCukesTest { }

18 of 37 10/09/14 21:46

GHERKINGHERKIN

src/test/cucumber/adding.feature

Feature: Calculate

Scenario: Add two numbers Given the input "2+2" When the calculator is run Then the output should be "4"

Scenario: Subtract two numbers Given the input "9-4" When the calculator is run Then the output should be "5"

19 of 37 10/09/14 21:46

STEP DEFINITIONSSTEP DEFINITIONS

src/test/cucumber/steps/add_steps.groovy

import static cucumber.api.groovy.EN.*

Given(~'^the input "([^"]*)"$') { String input -> //some groovy code}

When(~'^the calculator is run$') { -> //some groovy code}

Then(~'^the output should be "([^"]*)"$') { String output -> //some groovy code}

20 of 37 10/09/14 21:46

HOOKSHOOKS

src/test/cucumber/support/env.groovy

Before and After each Scenario

import static cucumber.api.groovy.Hooks.*

Before(){ //some groovy code}

After(){ //some groovy code }

21 of 37 10/09/14 21:46

MINI DEMOMINI DEMO

22 of 37 10/09/14 21:46

GRAILS CUCUMBER PLUGINGRAILS CUCUMBER PLUGIN

Plugin Portal

https://github.com/hauner/grails-cucumber

by Martin Hauner

23 of 37 10/09/14 21:46

GRAILS CUCUMBER PLUGINGRAILS CUCUMBER PLUGIN

FEATURESFEATURES

Convention over ConfigurationEasy ConfigurationNo Test RunnerUses Functional Test phaseHas Friends! (Geb, Spock, Build Test Data, Fixtures)Command Line integrationGood IDE SupportUnder active development

24 of 37 10/09/14 21:46

GRAILS CUCUMBER EXAMPLEGRAILS CUCUMBER EXAMPLE

Invader Zim ThemeQuote resource pageWalking skeletonAll moving parts of setup

25 of 37 10/09/14 21:46

CONFIGURATIONCONFIGURATION

grails-app/conf/BuildConfig.groovy

dependencies { ... test "org.codehaus.geb:geb-junit4:0.7.2" test "org.seleniumhq.selenium:selenium-chrome-driver:2.32.0" test "org.seleniumhq.selenium:selenium-support:2.32.0" ...}

plugins { ... test ':cucumber:1.0.1' compile ':remote-control:1.5' ...}

26 of 37 10/09/14 21:46

CONFIGURATIONCONFIGURATION

grails-app/conf/CucumberConfig.groovy

Replaces Test Runner .

cucumber { tags = ["~@wip"] features = ["test/cucumber"] glue = ["test/steps"] formats = [ "html:target/test-reports/cucumber" ] strict = true}

configuration

27 of 37 10/09/14 21:46

GHERKIN FEATUREGHERKIN FEATURE

test/cucumber/quote.feature

Feature: Invader Quotes

Scenario: Invader Zim quotes by Name Given an Invader named "Zim" And the Invader "Zim" says "The Earth is safe! I did it, GIR! Now let's go destroy it!" When a Quote is requested for "Zim" Then we are taken to the Quote Page And we see "The Earth is safe! I did it, GIR! Now let's go destroy it!"

Scenario: Invader GIR quotes by Name Given an Invader named "GIR" And the Invader "GIR" says "Can I be a mongoose dog?" When a Quote is requested for "GIR" Then we are taken to the Quote Page And we see "Can I be a mongoose dog?"

28 of 37 10/09/14 21:46

STEP DEFINITIONSSTEP DEFINITIONS

test/cucumber/steps/quote_steps.groovy

Gorm no longer supported!

Use instead!

Use Geb!

Given(~'^an Invader named "([^"]*)"$') { String name -> //persist quote}

When(~'^a Quote is requested for "([^"]*)"$') { String name -> to QuotePage}

Then(~'^we see "([^"]*)"$') { String quote -> def invasionQuote = page.fetchInvasionQuote() assert invasionQuote == quote}

Remote Control Plugin

29 of 37 10/09/14 21:46

DOMAIN CLASSDOMAIN CLASS

grails-app/domain/../Quote.groovy

class Quote { String name String message}

30 of 37 10/09/14 21:46

GEB PAGEGEB PAGE

test/functional/page/QuotePage.groovy

import geb.Page

class QuotePage extends Page { static url = "/zim-grails/invader" static at = { title == "Invader Zim Quotes" }

static content = { quote { $("#message") } }

def fetchInvasionQuote(){ quote.text() }}

31 of 37 10/09/14 21:46

ENVIRONMENT HOOKSENVIRONMENT HOOKS

test/cucumber/support/env.groovy

Use for any long running fixtureHooks run before and after each scenarioLike @BeforeClass and @AfterClass in JUnit

import geb.binding.BindingUpdaterimport geb.Browser

import static cucumber.api.groovy.Hooks.Afterimport static cucumber.api.groovy.Hooks.Before

System.setProperty("geb.build.baseUrl", "http://localhost:8080")

Before () { bindingUpdater = new BindingUpdater (binding, new Browser ()) bindingUpdater.initialize ()}

After () { bindingUpdater.remove ()}

32 of 37 10/09/14 21:46

CONTROLLERSCONTROLLERS

CONTROLLERCONTROLLER

URL MAPPINGURL MAPPING

class InvaderController { def index(String id) { [quote: Quote.findByName(id)] }}

"/invader/$name"(controller: "invader")

33 of 37 10/09/14 21:46

GSPGSP<%@ page contentType="text/html;charset=UTF-8" %><html><head> <meta name="layout" content="main"/> <title>Invader Zim Quotes</title></head><body> <blockquote class="bq1" id="message"> <p>${quote.message}</p> </blockquote> <p class="after" id="name">--Invader ${quote.name}</p></body></html>

34 of 37 10/09/14 21:46

CONCLUSIONCONCLUSIONBDD helps us CollaborateBDD helps us make software that Matters!Cucumber JVM and Gradle play nicelyGrails Cucumber plugin Rocks!BDD is lots of fun!

35 of 37 10/09/14 21:46

THANK YOU!!!THANK YOU!!!

36 of 37 10/09/14 21:46

Q & AQ & A

37 of 37 10/09/14 21:46

behaviour driven development with cucumber, groovy and grails

Software

agile development with groovy and grails -...

groovy and grails · 2011 argenis matarrita valencia...

groovy grails hallelujah

groovy and grails tutorial -...

twilio using groovy grails

jugl 2009 - introduction groovy/grails

naked objects and groovy grails

metaprogramming techniques in groovy and grails

groovy and grails jug padova

groovy, state of the union - groovy grails exchange 2010 -...

getting groovy with grails

groovy grails devjam jam session

groovy and grails jug trento

groovy and grails introduction

groovy & grails -...

groovy and grails jug sardegna

introduction to grails (groovy vs java and grails vs rails...

groovy and grails in google app engine

groovy grails gr8ladies women techmakers: minneapolis

groovy grails types, operators, objects