1. Ruby - a tester’s best friend
Peter Lind @peter_lind

2. Ruby, wait what?
Born in 1993
Object-oriented
Dynamic
Open Source
Elegant syntax
Focus on programmer happiness
Great for scripting
And for apps
Ruby On Rails?

3. Basics
[array]
{hash_key: hash_value}
{hash_key => hash_value}
do |var| <block body> end
{ |var| <block body> }
class ClassName <class body> end
def method_name <method body> end
local_variable, @instance_variable, @@class_variable,
Constant, $global

4. Basics
ruby script.rb
IRB
gems
– gem install <library>
rake
– Rakefile

5. How to install
Use version 1.9.2
OSX / Linux
– Might already have it
– If not, use RVM
• http://beginrescueend.com/rvm/install/
Windows
– Use Railsinstaller
• http://railsinstaller.org/

6. Culture
Ruby is your friend, not your parent

7. Culture
Ruby is your friend, not your parent
Everything can be redefined

8. Culture
Ruby is your friend, not your parent
Everything can be redefined
Readability

9. Culture
Ruby is your friend, not your parent
Everything can be redefined
Readability

10. Culture
Ruby is your friend, not your parent
Everything can be redefined
Readability
TDD/BDD

12. Tools
Sinatra
– Sinatra is a DSL for quickly creating web applications in Ruby
with minimal effort
– http://www.sinatrarb.com/

16. Tools
Sinatra
– Sinatra is a DSL for quickly creating web applications in Ruby
with minimal effort
– http://www.sinatrarb.com/
Cucumber
– BDD that talks to domain experts first and code second
– http://cukes.info/

17. Cucumber
Features
– Describes scenarios
– In the Gherkin language, almost English (or over 40 other)
– Given, When, Then

19. Cucumber
Features
– Describes scenarios
– In the Gherkin language, almost English (or over 40 other)
– Given, When, Then
Step definitions
– In Ruby
– Available for Java, .NET others

21. Tools
Sinatra
– Sinatra is a DSL for quickly creating web applications in Ruby
with minimal effort
– http://www.sinatrarb.com/
Cucumber
– BDD that talks to domain experts first and code second
– http://cukes.info/
Capybara
– Acceptance test framework for web applications
– https://github.com/jnicklas/capybara

22. Cucumber and Capybara example
http://www.youtube.com/watch?v=S5XQTOVTPYY
https://github.com/peterlind/cuke4all

23. Java Web App
Tests

24. pets.feature
Pickle
Feature: Manage pets
Scenario: List pets
Given a pet exists with name: "Fido", sort: 0, weight: 23
When I go to the list pets page
Then I should see "Fido"
Scenario: Enter a pet Capybara
Given I am on the enter pet page
And I fill in "Name" with "Rufus"
And I fill in "Sort" with "Cat"
And I fill in "Weight" with "8"
And I press "Save"
Then a pet should exist with name: "Rufus", weight: 8

26. THANKS!
peter.lind@valtech.se
@peter_lind