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 \"I am logged in\" 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 \"I am logged in\" 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| \"user#{n}@example.com\" }
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 \"I am logged in\" 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 \"I create a new company named $name\" do |name|
visits new_company_path
fills_in 'Name', :with => name
clicks_button 'Create'
end

When == Change
v a r i a ble
When \"I create a new company named $name\" 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 \"I should see that a company named $name exists\" 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