Learn how to write robust and articulate tests using the Screenplay Pattern, an innovative approach to writing BDD-style automated acceptance tests that are easier to understand, easier to extend and easier to maintain.

1. @Wakaleo @JanMolak#SerenityBDD
Screenplay
Next generation automated
acceptance testing
AUTHOR OF ‘BDD IN ACTION’
@wakaleo
www.johnfergusonsmart.com

2. @Wakaleo @JanMolak#SerenityBDD
Sustainable test automation
to deliver features that matter

3. @Wakaleo @JanMolak#SerenityBDD
Learn
Measure
Build

4. @Wakaleo @JanMolak#SerenityBDD
Requirements
Discovery
Automation and
Feedback
Software
Craftsmanship
Learn Build
Measure

5. @Wakaleo @JanMolak#SerenityBDD
Requirements
Discovery
Automation and
Feedback
Software
Craftsmanship
Learn Build
Measure

6. @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

7. @Wakaleo @JanMolak#SerenityBDD
Behaviour-Driven Development

8. @Wakaleo @JanMolak#SerenityBDD
Behaviour-Driven Development
Domain-Driven Design

9. @Wakaleo @JanMolak#SerenityBDD
Domain-Driven Design
Behaviour-Driven Development
User-Centred Design

10. @Wakaleo @JanMolak#SerenityBDD
Building the
application
Testing the
application
When we are…
We model…
The domain
How the user interacts
with the application
Account
Purchase
Product
Open an account
Look for a
product
Completes a
purchase
NOUNS VERBS
The key
concepts
are…

11. @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

12. @Wakaleo @JanMolak#SerenityBDD
Actors
Goals
Tasks
Interactions
System
have
involve
require
with the

13. Focus on
outstanding
items
@Wakaleo @JanMolak#SerenityBDD
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

14. @Wakaleo @JanMolak#SerenityBDD
Feature: Filter the list to find items of interest
In order to focus on outstanding items
James would like to filter his todo list
to only show items of interest
Scenario: Viewing Active items only
Given James has a list with Walk the dog, Get a coffee
And he completes Walk the dog
When he filters his list to show only Active tasks
Then his todo list should contain Get a coffee

15. @Wakaleo @JanMolak#SerenityBDD
Feature: Filter the list to find items of interest
In order to focus on outstanding items
James would like to filter his todo list
to only show items of interest
Scenario: Viewing Active items only
Given James has a list with Walk the dog, Get a coffee
And he completes Walk the dog
When he filters his list to show only Active tasks
Then his todo list should contain Get a coffee
Actor

16. @Wakaleo @JanMolak#SerenityBDD
Feature: Filter the list to find items of interest
In order to focus on outstanding items
James would like to filter his todo list
to only show items of interest
Scenario: Viewing Active items only
Given James has a list with Walk the dog, Get a coffee
And he completes Walk the dog
When he filters his list to show only Active tasks
Then his todo list should contain Get a coffee
Actor
Goals

17. @Wakaleo @JanMolak#SerenityBDD
Scenario: Viewing Active items only
Given James has a list with Walk the dog, Get a coffee
And he completes Walk the dog
When he filters his list to show only Active tasks
Then his todo list should contain Get a coffee
Actor
Goals
Tasks

18. @Wakaleo @JanMolak#SerenityBDD
Scenario: Viewing Active items only
Given James has a list with Walk the dog, Get a coffee
And he completes Walk the dog
When he filters his list to show only Active tasks
Then his todo list should contain Get a coffee
Actor
Goals
Tasks

19. @Wakaleo @JanMolak#SerenityBDD
Scenario: Viewing Active items only
Given James has a list with Walk the dog, Get a coffee
And he completes Walk the dog
When he filters his list to show only Active tasks
Then his todo list should contain Get a coffee
Actor
Goals
Tasks

20. @Wakaleo @JanMolak#SerenityBDD
Scenario: Viewing Active items only
Given James has a list with Walk the dog, Get a coffee
And he completes Walk the dog
When he filters his list to show only Active tasks
Then his todo list should contain Get a coffee
Actor
Goals
Tasks

21. @Wakaleo @JanMolak#SerenityBDD
Scenario: Viewing Active items only
Given James has a list with Walk the dog, Get a coffee
And he completes Walk the dog
When he filters his list to show only Active tasks
Then his todo list should contain Get a coffee
Actor
Goals
Tasks

22. @Wakaleo @JanMolak#SerenityBDD
Scenario: Viewing Active items only
Given James has a list with Walk the dog, Get a coffee
And he completes Walk the dog
When he filters his list to show only Active tasks
Then his todo list should contain Get a coffee
Actor
Goals
Tasks

23. @Wakaleo @JanMolak#SerenityBDD
Scenario: Viewing Active items only
Start with a list containing: Walk the dog, Get a coffee
And he completes Walk the dog
When he filters his list to show only Active tasks
Then his todo list should contain Get a coffee
Actor
Goals
Tasks

24. @Wakaleo @JanMolak#SerenityBDD
Scenario: Viewing Active items only
Start with a list containing: Walk the dog, Get a coffee
And he completes Walk the dog
When he filters his list to show only Active tasks
Then his todo list should contain Get a coffee
Actor
Goals
Tasks

25. @Wakaleo @JanMolak#SerenityBDD
Scenario: Viewing Active items only
Start with a list containing: Walk the dog, Get a coffee
Complete a todo item called: Walk the dog
When he filters his list to show only Active tasks
Then his todo list should contain Get a coffee
Actor
Goals
Tasks

26. @Wakaleo @JanMolak#SerenityBDD
Scenario: Viewing Active items only
Start with a list containing: Walk the dog, Get a coffee
Complete a todo item called: Walk the dog
When he filters his list to show only Active tasks
Then his todo list should contain Get a coffee
Actor
Goals
Tasks

27. @Wakaleo @JanMolak#SerenityBDD
Scenario: Viewing Active items only
Start with a list containing: Walk the dog, Get a coffee
Complete a todo item called: Walk the dog
Filter list to show only Active tasks
Then his todo list should contain Get a coffee
Actor
Goals
Tasks

28. @Wakaleo @JanMolak#SerenityBDD
Scenario: Viewing Active items only
Start with a list containing: Walk the dog, Get a coffee
Complete a todo item called: Walk the dog
Filter list to show only Active tasks
Then his todo list should contain Get a coffee
Actor
Goals
Tasks

29. @Wakaleo @JanMolak#SerenityBDD
Scenario: Viewing Active items only
Start with a list containing: Walk the dog, Get a coffee
Complete a todo item called: Walk the dog
Filter list to show only Active tasks
Expect to see: Get a coffee
Actor
Goals
Tasks

30. @Wakaleo @JanMolak#SerenityBDD
Scenario: Viewing Active items only
Start with a list containing: Walk the dog, Get a coffee
Complete a todo item called: Walk the dog
Filter list to show only Active tasks
Expect to see: Get a coffee
Actor
Goals
Tasks

31. @Wakaleo @JanMolak#SerenityBDD
Scenario: Viewing Active items only
Start with a list containing: Walk the dog, Get a coffee
Open browser on ‘todomvc.com/examples/angularjs/'
Resize browser window to maximum
Add a todo item called ‘Walk the dog’
Add a todo item called ‘Get a coffee’
...
Actor
Goals
Tasks

32. @Wakaleo @JanMolak#SerenityBDD
To view Active items only, James attempts to:
Start with a list containing: Walk the dog, Get a coffee
Open browser on ‘todomvc.com/examples/angularjs/'
Resize browser window to maximum
Add a todo item called ‘Walk the dog’
Add a todo item called ‘Get a coffee’
Enter the value ‘Get a coffee’
Hit the Enter key
...
Actor
Goals
Tasks
Interactions

33. Software
Craftsmanship
Automation and
Feedback
@Wakaleo @JanMolak#SerenityBDD
Requirements
Discovery
Learn Build
Measure

34. @Wakaleo @JanMolak#SerenityBDD
40-70%maintenance overhead for poorly-written test suites

35. @Wakaleo @JanMolak#SerenityBDD
Serenity BDD
and the Screenplay Pattern

36. @Wakaleo @JanMolak#SerenityBDD
Complete the requirements circle
Serenity BDD and the Screenplay Pattern

37. @Wakaleo @JanMolak#SerenityBDD
Serenity BDD and the Screenplay Pattern
User-centric

38. @Wakaleo @JanMolak#SerenityBDD
Serenity BDD and the Screenplay Pattern
Reusable business DSL…in code

39. @Wakaleo @JanMolak#SerenityBDD
Serenity BDD and the Screenplay Pattern
Designed to scale

40. @Wakaleo @JanMolak#SerenityBDD
Serenity BDD
and the Screenplay Pattern
in action

41. Focus on
outstanding
items
@Wakaleo @JanMolak#SerenityBDD
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

42. @Wakaleo @JanMolak#SerenityBDD
Actor james = Actor.named(“James”); actor

43. @Wakaleo @JanMolak#SerenityBDD
@Managed WebDriver hisBrowser;
…
james.can(BrowseTheWeb.with(hisBrowser));
an actor
has
abilities

44. @Wakaleo @JanMolak#SerenityBDD
james.attemptsTo(
AddATodoItem.called("Buy some milk")
);
an actor
performs
tasks

45. @Wakaleo @JanMolak#SerenityBDD
@Given(“^.* has a todo list containing (.*)$")
public void has_a_list_with(List<String> items) {
james.attemptsTo(
Start.withATodoListContaining(items)
);
}
an actor
performs
tasks

46. @Wakaleo @JanMolak#SerenityBDD
public class Start implements Task {
@Step("{0} starts with #items")
public <T extends Actor> void performAs(T actor) {
actor.attemptsTo(
Open.browserOn().the(applicationHomePage),
AddTodoItems.called(items))
);
}
// ...
}
tasks
can use
other
tasks

47. @Wakaleo @JanMolak#SerenityBDD
public class AddATodoItem implements Task {
@Step("{0} adds a todo item called: #thingToDo")
public void performAs(Actor theActor) {
theActor.attemptsTo(
Enter.theValue(thingToDo)
.into(TodoList.WHAT_NEEDS_TO_BE_DONE)
.thenHit(RETURN)
);
}
// ...
}
tasks
use
inter-
actions

48. @Wakaleo @JanMolak#SerenityBDD
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

49. Automation and
Feedback
@Wakaleo @JanMolak#SerenityBDD
Requirements
Discovery
Software
Craftsmanship
Learn Build
Measure

50. @Wakaleo @JanMolak#SerenityBDD
Levels of communication
-
+

51. @Wakaleo @JanMolak#SerenityBDD
10,000 ft
Release Readiness
-
+

52. @Wakaleo @JanMolak#SerenityBDD
1000 ft
Capabilities and Features
-
+

53. @Wakaleo @JanMolak#SerenityBDD
100 ft
Scenarios and Steps
-
+

54. Focus on
outstanding
items
@Wakaleo @JanMolak#SerenityBDD
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

55. @Wakaleo @JanMolak#SerenityBDD
Release
Readiness
-
+

56. -
+
@Wakaleo @JanMolak#SerenityBDD
Release
Readiness
Capabilities

57. -
+
@Wakaleo @JanMolak#SerenityBDD
Release
Readiness
Capabilities
Features

58. -
+
@Wakaleo @JanMolak#SerenityBDD
Release
Readiness
Capabilities
Features
Scenarios

59. @Wakaleo @JanMolak#SerenityBDD
‣ “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” - InfoQ
John Ferguson Smart, Antony Marcano, Andy Palmer, Jan Molak
bit.ly/screenplay-introduction
Want to know more?

60. @Wakaleo @JanMolak#SerenityBDD
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

61. @Wakaleo @JanMolak#SerenityBDD
Questions?
AUTHOR OF ‘BDD IN ACTION’
@wakaleo
www.johnfergusonsmart.com