screenplay - next generation automated acceptance testing

@Wakaleo @JanMolak #SerenityBDD

ScreenplayNext generation automated acceptance testing

AUTHOR OF ‘BDD IN ACTION’

@wakaleo

www.johnfergusonsmart.com

http://www.johnfergusonsmart.com


Sustainable test automation to deliver features that matter


Learn

Measure

Build


Requirements Discovery

Automation and Feedback

Software Craftsmanship

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

https://twitter.com/wakaleo

https://twitter.com/janmolak

http://www.hse.gov.uk/pUbns/priced/hsg238.pdf

http://amzn.to/2evGir6

http://www0.cs.ucl.ac.uk/research/renoir/newsletter/backissues/renl34


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

HOW

Enter the value ‘Get a coffee’

Click on TAB

WHAT

Record a todo item

WHY

Keep a list of things I need to do


Actors

Goals

Tasks

Interactions

System

have

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

Actor


Feature:Filterthelisttofinditemsofinterest

InordertofocusonoutstandingitemsJameswouldliketofilterhistodolisttoonlyshowitemsofinterest

Scenario:ViewingActiveitemsonlyGivenJameshasalistwithWalkthedog,GetacoffeeAndhecompletesWalkthedogWhenhefiltershislisttoshowonlyActivetasksThenhistodolistshouldcontainGetacoffee

Actor

Goals



GivenJameshasalistwithWalkthedog,GetacoffeeAndhecompletesWalkthedogWhenhefiltershislisttoshowonlyActivetasksThenhistodolistshouldcontainGetacoffee

Actor

Goals

Tasks



Startwithalistcontaining:Walkthedog,GetacoffeeAndhecompletesWalkthedogWhenhefiltershislisttoshowonlyActivetasksThenhistodolistshouldcontainGetacoffee

Actor

Goals

Tasks



Startwithalistcontaining:Walkthedog,GetacoffeeCompleteatodoitemcalled:WalkthedogWhenhefiltershislisttoshowonlyActivetasksThenhistodolistshouldcontainGetacoffee

Actor

Goals

Tasks



Startwithalistcontaining:Walkthedog,GetacoffeeCompleteatodoitemcalled:WalkthedogFilterlisttoshowonlyActivetasksThenhistodolistshouldcontainGetacoffee

Actor

Goals

Tasks



Startwithalistcontaining:Walkthedog,GetacoffeeCompleteatodoitemcalled:WalkthedogFilterlisttoshowonlyActivetasksExpecttosee:Getacoffee

Actor

Goals

Tasks



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

Actor

Goals

Tasks

http://todomvc.com/examples/angularjs/'


ToviewActiveitemsonly,Jamesattemptsto:

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

Actor

Goals

Tasks

Interactions

http://todomvc.com/examples/angularjs/'





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

tasks


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

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

an actor performs

tasks


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?

http://bit.ly/screenplay-page-objects

http://bit.ly/screenplay-introduction


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

http://serenity-bdd.info

http://johnfergusonsmart.com

http://bit.ly/screenplay-jvm-demo


Questions?AUTHOR OF ‘BDD IN ACTION’

@wakaleo

www.johnfergusonsmart.com

http://www.johnfergusonsmart.com

screenplay - next generation automated acceptance testing

Technology