This was a presentation done for Xamarin University as a Guest Lecture about Behavior Driven Development, specflow and Xamarin test cloud.

1. Behavior Driven Development For Mobile Apps
Using Specflow & Xamarin Test Cloud
Geert van der Cruijsen
Lead Consultant Xpirit
@geertvdc
http://mobilefirstcloudfirst.net
gvandercruijsen@xpirit.com

2. Behavior Driven Development

3. WHAT WHY HOW
Behavior Driven Development

4. WHAT
Behavior Driven Development

5. Business
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6. Business
$
Developer
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7. Business
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Developer
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Product
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8. Business
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Developer
{ }
Product
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Months

9. Business
$
Developer
{ }
Product
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WeeksMonths

10. Business
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Developer
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Product
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Weeks
Examples

11. Business
$
Developer
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Product
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Weeks
Examples
BDD

12. Business
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Developer
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Product
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Weeks
Examples
BDD
Ubiquitous
Language

13. Business
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Developer
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Product
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Examples
BDD
Ubiquitous
Language

14. Business Developer Product
Weeks
Examples
BDD
Ubiquitous
Language
DDD
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15. What is Behavior Driven Development
BDD is a process designed to aid the management and the delivery of
software development projects by improving communication between
engineers and business professionals. In so doing, BDD ensures all
development projects remain focused on delivering what the business
actually needs while meeting all requirements of the user.
BDD is an evolution in the thinking behind Test Driven Development and
Acceptance Test Driven Planning. BDD is also referred to as specification
by example.

16. What is Behavior Driven Development
BDD is a process designed to aid the management and the delivery of
software development projects by improving communication between
engineers and business professionals. In so doing, BDD ensures all
development projects remain focused on delivering what the business
actually needs while meeting all requirements of the user.
BDD is an evolution in the thinking behind Test Driven Development and
Acceptance Test Driven Planning. BDD is also referred to as specification
by example.

17. What is Behavior Driven Development
BDD is a process designed to aid the management and the delivery of
software development projects by improving communication between
engineers and business professionals. In so doing, BDD ensures all
development projects remain focused on delivering what the business
actually needs while meeting all requirements of the user.
BDD is an evolution in the thinking behind Test Driven Development and
Acceptance Test Driven Planning. BDD is also referred to as specification
by example.

18. 3 Amigos
Product Owner Developer Tester

19. 3 Amigos
Product Owner Developer Tester

20. 3 Amigos
Product Owner
Developer
Tester

21. WHY
Behavior Driven Development

22. 26% of installed apps are abandoned after the first use
Google 2015
The average Android app loses 77% of its daily active
users within the first three days after the install, and
90% within the first 30 days Quettra 2015

23. Mobile App
Quality
is important

24. Why Behavior Driven Development

25. Why Behavior Driven Development

26. HOW
Behavior Driven Development

27. Writing examples in Gherkin
Feature: feature title
As a [role]
I want [feature]
So that [benefit]
Scenario:
Scenario 1: Title
Given [context]
And [some more context]...
When [event]
Then [outcome]
And [another outcome]...

28. Writing examples in Gherkin
Feature: feature title
As a [role]
I want [feature]
So that [benefit]
Scenario:
Scenario 1: Title
Given [context]
And [some more context]...
When [event]
Then [outcome]
And [another outcome]...

29. Writing examples in Gherkin
Feature: feature title
As a [role]
I want [feature]
So that [benefit]
Scenario:
Scenario 1: Title
Given [context]
And [some more context]...
When [event]
Then [outcome]
And [another outcome]...

30. Writing examples in Gherkin
Feature: feature title
As a [role]
I want [feature]
So that [benefit]
Scenario:
Scenario 1: Title
Given [context] //Arrange
When [event] //Act
Then [outcome] //Assert

31. Writing examples in Gherkin
Feature: Get weather for location
As a person who has to go outside sometimes
I want to retrieve todays weather
So that I know I should bring an umbrella

32. Writing examples in Gherkin
Scenario 1: Get weather for manually
added location
Given I opened the app
When I enter “Amsterdam” as the location
When I press the “Get Weather” button
Then the temperature in Amsterdam should be
shown

33. How to do BDD?
Gherkin Cucumber for .NET

35. Let’s see this in action
DEMOGithub.com/geertvdc/BDDXamarin

36. Conclusion
BDD helps building software that matters
Specflow, Xamarin & Testcloud are
a great way to implement BDD for mobile apps

37. Conclusion

38. Thank you!
Geert van der Cruijsen
@geertvdc
http://mobilefirstcloudfirst.net
gvandercruijsen@xpirit.com
Github.com/geertvdc