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Behavior Driven Development

                                  Cucumber
                                                              with


                                      Brandon Keepers ● Collective idea ● http://opensoul.org




http://flickr.com/photos/nickatkins/527421404/
Feature: Cucumber
  In order to share the love
  As a presenter
  I will demonstrate behavior driven development with Cucumber

 Scenario: Behavior Driven Development with Cucumber
   Given a desire for higher quality software
   And a tool that executes feature documentation written in plain text
   When you watch this presentation
   Then you will gain an understanding of behavior driven development
   And see examples of behavior driven development with cucumber
   And be equipped to integrate Cucumber into your development process
Quality
1
Quality
meets requirements
Developer


Language
   Client
Developer


Stories
  Client
In order to keep of track movies that I want to see
As a NetFlix customer
I can add movies to a queue




               http://dannorth.net/whats-in-a-story
va l ue p ro p o s i t i o n


In order to keep of track movies that I want to see
As a NetFlix customer
I can add movies to a queue




               http://dannorth.net/whats-in-a-story
In order to keep of track movies that I want to see
As a NetFlix customer            role
I can add movies to a queue




               http://dannorth.net/whats-in-a-story
In order to keep of track movies that I want to see
As a NetFlix customer
I can add movies to a queue


                             e at u re
                         f

               http://dannorth.net/whats-in-a-story
2
Quality
works as expected
Test Driven
Behavior Driven
Verify
Confidence
Design
Behavior
Testing

Specifying
Cucumber

http://flickr.com/photos/nickatkins/527421404/
rbehave

rSpec Story Runner

  Cucumber
http://github.com/aslakhellesoy/cucumber
$ gem install cucumber
Rakefile

require 'rubygems'
require 'cucumber/rake/task'

Cucumber::Rake::Task.new
$ rake features
Rails
$ ruby script/plugin install 
   git://github.com/aslakhellesoy/cucumber.git 
   git://github.com/brynary/webrat.git 
   git://github.com/dchelimsky/rspec.git 
   git://github.com/dchelimsky/rspec-rails.git

$ ruby script/plugin install 
   git://brandon.local/cucumber 
   git://brandon.local/webrat 
   git://brandon.local/rspec 
   git://brandon.local/rspec-rails
Dependencies


$ gem install term-ansicolor 
   treetop diff-lcs hpricot
$ ruby script/generate cucumber
Feature: Manage companies
  In order to keep track of companies
  A user
  Should be able to manage companies

 Scenario: Create a new company
   Given I am logged in
   When I create a new company named Acme
   Then I should see that a company named Acme exists
features/
 companies.feature
 steps/
  company_steps.rb
Given == Setup

Given quot;I am logged inquot; do
  user = Factory(:user)
  visits new_session_path
  fills_in ‘Login’,     :with => user.login
  fills_in ‘Password’, :with => user.password
  clicks_button ‘Login’
end
Given quot;I am logged inquot; do
  user = Factory(:user)
                               f ac t o r y_g i r l
  visits new_session_path
  fills_in ‘Login’,     :with => user.login
  fills_in ‘Password’, :with => user.password
  clicks_button ‘Login’
end

          Factory.sequence(:email) {|n| quot;user#{n}@example.comquot; }
          Factory.define :user do |user|
            user.name 'User'
            user.email { Factory.next(:email) }
            user.login {|u| u.email }
            user.password 'password'
            user.password_confirmation 'password'
          end
Given quot;I am logged inquot; do
  user = Factory(:user)
  visits new_session_path
  fills_in 'Login',     :with => user.login
  fills_in 'Password', :with => user.password
  clicks_button 'Login'
end

                                            we b rat
When == Change


When quot;I create a new company named $namequot; do |name|
  visits new_company_path
  fills_in 'Name', :with => name
  clicks_button 'Create'
end
When == Change
                                   v a r i a ble


When quot;I create a new company named $namequot; do |name|
  visits new_company_path
  fills_in 'Name', :with => name
  clicks_button 'Create'
end


         When I create a new company named Acme
Then == Outcome


Then quot;I should see that a company named $name existsquot; do |name|
  response.body.should =~ Regexp.new(name)
end
Feature: Manage companies
  In order to keep track of companies
  A user
  Should be able to manage companies

 Scenario: Create a new company
   Given I am logged in
   When I create a new company named Acme
   Then I should see that a company named Acme exists

3 steps passsed
Scenario: Paging through leads and rejecting
  Given a company called Apple Corp.
  And a company called Pear Inc.
  And a list for Client A
  And Apple Corp. is a new lead in a list for Client A
  And Pear Inc. is a new lead in a list for Client A
  And I am logged in as a staff member

  When I view the company overview for Apple Corp.
  And I reject Apple Corp.
  And I go to the next lead

  Then I see the company overview for Pear Inc.
Cucumber or RSpec?
Cucumber or RSpec?


 BOTH
http://github.com/bmabey/cucumber-tmbundle/
Feature: Cucumber
  In order to share the love
  As a presenter
  I will demonstrate behavior driven development with Cucumber

  Scenario: Behavior Driven Development with Cucumber
    Given a desire for higher quality software
    And a tool that executes feature documentation written in plain text
    When you watch this presentation
    Then you will gain an understanding of behavior driven development
    And see examples of behavior driven development with cucumber
    And be equipped to integrate Cucumber into your development process

6 steps passed
@bkeepers
github.com/
    brandon
    collectiveidea
opensoul.org
sessions.collectiveidea.com

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Behavior Driven Development with Cucumber

  • 1. Behavior Driven Development Cucumber with Brandon Keepers ● Collective idea ● http://opensoul.org http://flickr.com/photos/nickatkins/527421404/
  • 2. Feature: Cucumber In order to share the love As a presenter I will demonstrate behavior driven development with Cucumber Scenario: Behavior Driven Development with Cucumber Given a desire for higher quality software And a tool that executes feature documentation written in plain text When you watch this presentation Then you will gain an understanding of behavior driven development And see examples of behavior driven development with cucumber And be equipped to integrate Cucumber into your development process
  • 7.
  • 8. In order to keep of track movies that I want to see As a NetFlix customer I can add movies to a queue http://dannorth.net/whats-in-a-story
  • 9. va l ue p ro p o s i t i o n In order to keep of track movies that I want to see As a NetFlix customer I can add movies to a queue http://dannorth.net/whats-in-a-story
  • 10. In order to keep of track movies that I want to see As a NetFlix customer role I can add movies to a queue http://dannorth.net/whats-in-a-story
  • 11. In order to keep of track movies that I want to see As a NetFlix customer I can add movies to a queue e at u re f http://dannorth.net/whats-in-a-story
  • 15.
  • 24. $ gem install cucumber
  • 27. Rails $ ruby script/plugin install git://github.com/aslakhellesoy/cucumber.git git://github.com/brynary/webrat.git git://github.com/dchelimsky/rspec.git git://github.com/dchelimsky/rspec-rails.git $ ruby script/plugin install git://brandon.local/cucumber git://brandon.local/webrat git://brandon.local/rspec git://brandon.local/rspec-rails
  • 28. Dependencies $ gem install term-ansicolor treetop diff-lcs hpricot
  • 30. Feature: Manage companies In order to keep track of companies A user Should be able to manage companies Scenario: Create a new company Given I am logged in When I create a new company named Acme Then I should see that a company named Acme exists
  • 32. Given == Setup Given quot;I am logged inquot; do user = Factory(:user) visits new_session_path fills_in ‘Login’, :with => user.login fills_in ‘Password’, :with => user.password clicks_button ‘Login’ end
  • 33. Given quot;I am logged inquot; do user = Factory(:user) f ac t o r y_g i r l visits new_session_path fills_in ‘Login’, :with => user.login fills_in ‘Password’, :with => user.password clicks_button ‘Login’ end Factory.sequence(:email) {|n| quot;user#{n}@example.comquot; } Factory.define :user do |user| user.name 'User' user.email { Factory.next(:email) } user.login {|u| u.email } user.password 'password' user.password_confirmation 'password' end
  • 34. Given quot;I am logged inquot; do user = Factory(:user) visits new_session_path fills_in 'Login', :with => user.login fills_in 'Password', :with => user.password clicks_button 'Login' end we b rat
  • 35. When == Change When quot;I create a new company named $namequot; do |name| visits new_company_path fills_in 'Name', :with => name clicks_button 'Create' end
  • 36. When == Change v a r i a ble When quot;I create a new company named $namequot; do |name| visits new_company_path fills_in 'Name', :with => name clicks_button 'Create' end When I create a new company named Acme
  • 37. Then == Outcome Then quot;I should see that a company named $name existsquot; do |name| response.body.should =~ Regexp.new(name) end
  • 38. Feature: Manage companies In order to keep track of companies A user Should be able to manage companies Scenario: Create a new company Given I am logged in When I create a new company named Acme Then I should see that a company named Acme exists 3 steps passsed
  • 39. Scenario: Paging through leads and rejecting Given a company called Apple Corp. And a company called Pear Inc. And a list for Client A And Apple Corp. is a new lead in a list for Client A And Pear Inc. is a new lead in a list for Client A And I am logged in as a staff member When I view the company overview for Apple Corp. And I reject Apple Corp. And I go to the next lead Then I see the company overview for Pear Inc.
  • 43. Feature: Cucumber In order to share the love As a presenter I will demonstrate behavior driven development with Cucumber Scenario: Behavior Driven Development with Cucumber Given a desire for higher quality software And a tool that executes feature documentation written in plain text When you watch this presentation Then you will gain an understanding of behavior driven development And see examples of behavior driven development with cucumber And be equipped to integrate Cucumber into your development process 6 steps passed
  • 44. @bkeepers github.com/ brandon collectiveidea opensoul.org sessions.collectiveidea.com