screenplay - next generation automated acceptance testing

@Wakaleo @JanMolak #SerenityBDD

ScreenplayNext generation automated acceptance testing

AUTHOR OF ‘BDD IN ACTION’

@wakaleo

www.johnfergusonsmart.com

Sustainable test automation to deliver features that matter

Measure

Requirements Discovery

Automation and Feedback

Software Craftsmanship

Learn Build

Measure

Learn Build

Measure

@Wakaleo @JanMolak#SerenityBDD

source: - 44% - “Out of Control - Why Control Systems Go Wrong and How to Prevent Failure” - 56% - “An Information Systems Manifesto” - 80% - “Requirements: A quick and inexpensive way to improve testing”

44-80%of all defects are caused by unclear, ambiguous or incorrect requirements

Behaviour-Driven Development

Behaviour-Driven DevelopmentDomain-Driven Design

Domain-Driven DesignBehaviour-Driven Development

User-Centred Design

Building the application

Testing the application

When we are…

We model…The domain How the user interacts

with the applicationAccount

Purchase

ProductOpen an account Look for a

product

Completes a purchase

NOUNS VERBSThe key concepts are…

@Wakaleo @JanMolak#SerenityBDD #Devoxx

Enter the value ‘Get a coffee’

Click on TAB

Record a todo item

Keep a list of things I need to do

Actors

Interactions

System

involve

require

with the

Focus on outstanding items

Actor Goals Tasks Interactions

Press “Enter”

Type “Walk the dog”

Record things I need to do

Mark as complete

Record an item

Filter the list

Feature:FilterthelisttofinditemsofinterestInordertofocusonoutstandingitemsJameswouldliketofilterhistodolisttoonlyshowitemsofinterest

Scenario:ViewingActiveitemsonlyGivenJameshasalistwithWalkthedog,GetacoffeeAndhecompletesWalkthedogWhenhefiltershislisttoshowonlyActivetasksThenhistodolistshouldcontainGetacoffee

Feature:FilterthelisttofinditemsofinterestInordertofocusonoutstandingitemsJameswouldliketofilterhistodolisttoonlyshowitemsofinterest

Scenario:ViewingActiveitemsonly

GivenJameshasalistwithWalkthedog,GetacoffeeAndhecompletesWalkthedogWhenhefiltershislisttoshowonlyActivetasksThenhistodolistshouldcontainGetacoffee

Feature:Filterthelisttofinditemsofinterest

InordertofocusonoutstandingitemsJameswouldliketofilterhistodolisttoonlyshowitemsofinterest

Scenario:ViewingActiveitemsonlyGivenJameshasalistwithWalkthedog,GetacoffeeAndhecompletesWalkthedogWhenhefiltershislisttoshowonlyActivetasksThenhistodolistshouldcontainGetacoffee

Startwithalistcontaining:Walkthedog,GetacoffeeAndhecompletesWalkthedogWhenhefiltershislisttoshowonlyActivetasksThenhistodolistshouldcontainGetacoffee

Startwithalistcontaining:Walkthedog,GetacoffeeCompleteatodoitemcalled:WalkthedogWhenhefiltershislisttoshowonlyActivetasksThenhistodolistshouldcontainGetacoffee

Startwithalistcontaining:Walkthedog,GetacoffeeCompleteatodoitemcalled:WalkthedogFilterlisttoshowonlyActivetasksThenhistodolistshouldcontainGetacoffee

Startwithalistcontaining:Walkthedog,GetacoffeeCompleteatodoitemcalled:WalkthedogFilterlisttoshowonlyActivetasksExpecttosee:Getacoffee

Startwithalistcontaining:Walkthedog,GetacoffeeOpenbrowseron‘todomvc.com/examples/angularjs/'ResizebrowserwindowtomaximumAddatodoitemcalled‘Walkthedog’Addatodoitemcalled‘Getacoffee’...

ToviewActiveitemsonly,Jamesattemptsto:

Startwithalistcontaining:Walkthedog,GetacoffeeOpenbrowseron‘todomvc.com/examples/angularjs/'ResizebrowserwindowtomaximumAddatodoitemcalled‘Walkthedog’Addatodoitemcalled‘Getacoffee’Enterthevalue‘Getacoffee’HittheEnterkey...

Interactions

Learn Build

Measure

40-70%maintenance overhead for poorly-written test suites

Serenity BDD and the Screenplay Pattern

Complete the requirements circle

User-centric

Reusable business DSL…in code

Designed to scale

Serenity BDD and the Screenplay Pattern in action

Actor Goals Tasks Interactions

Press “Enter”

Type “Walk the dog”

Mark as complete

Record an item

Filter the list

Record things I need to do

Actorjames=Actor.named(“James”);actor

@ManagedWebDriverhisBrowser;…james.can(BrowseTheWeb.with(hisBrowser));

an actor has

abilities

james.attemptsTo(AddATodoItem.called("Buysomemilk"));

an actor performs

@Given(“^.*hasatodolistcontaining(.*)$")publicvoidhas_a_list_with(List<String>items){

james.attemptsTo(Start.withATodoListContaining(items));}

an actor performs

publicclassStartimplementsTask{@Step("{0}startswith#items")public<TextendsActor>voidperformAs(Tactor){actor.attemptsTo(Open.browserOn().the(applicationHomePage),AddTodoItems.called(items)));}//...}

tasks can use

other tasks

publicclassAddATodoItemimplementsTask{@Step("{0}addsatodoitemcalled:#thingToDo")publicvoidperformAs(ActortheActor){theActor.attemptsTo(Enter.theValue(thingToDo).into(TodoList.WHAT_NEEDS_TO_BE_DONE).thenHit(RETURN));}//...}

tasks use

inter-actions

public class TodoList {

public static Target WHAT_NEEDS_TO_BE_DONE = Target.the("'What needs to be done?' field") .locatedBy(“#new-todo");

public static Target ITEMS = Target.the("List of todo items") .locatedBy(".view label"); public static Target ITEMS_LEFT = Target.the("Count of items left") .locatedBy("#todo-count strong”);

public static Target FILTER = Target.the("filter") .locatedBy("//*[@id='filters']//a[.='{0}']"); }

Page Objects

are much simpler

Learn Build

Measure

Levels of communication

10,000 ftRelease Readiness

1000 ftCapabilities and Features

100 ftScenarios and Steps

Actor Goals Capabilities Features

Keeping the list up to date

Mark as complete

Record an item

Remove an item

Focus on important tasks

Scenarios

Complete a todo item

Release Readiness -

Release Readiness Capabilities

Release Readiness Capabilities Features

Release Readiness Capabilities Features Scenarios

‣ “Page Objects Refactored: SOLID Steps to the Screenplay/Journey Pattern” - DZone Antony Marcano, Andy Palmer, Jan Molak, John Ferguson Smart bit.ly/screenplay-page-objects

‣ “Beyond Page Objects: Next Generation Test Automation with Serenity and the Screenplay Pattern” - InfoQJohn Ferguson Smart, Antony Marcano, Andy Palmer, Jan Molak bit.ly/screenplay-introduction

Want to know more?

Want to know more?Learn about Serenity:serenity-bdd.info

Learn more about BDD and Serenity, and how we can help: http://johnfergusonsmart.com

See the project in action:bit.ly/screenplay-jvm-demo

Questions?AUTHOR OF ‘BDD IN ACTION’

@wakaleo

www.johnfergusonsmart.com

screenplay - next generation automated acceptance testing

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