Writing Software not code With. Ben Mabey

Transcription

1 Writing Software not code With Ben Mabey

2 Writing Software not code With Ben Mabey

3 Writing Software not code With Behaviour Driven Development Ben Mabey

4 ?

5

6 Tweet in the blanks... "most software projects are like " #rubyhoedown #cucumber

7 "most software projects are like " #rubyhoedown #cucumber

8

9

10 So... why are software projects like The Homer?

11

12

13

14 Feature Devotion Placing Text emphasis on features instead of overall outcome

15

16 Shingeo Shingo of Toyota says...

17 "Inspection to find defects is waste."

18 "Inspection to find defects is waste." "Inspection to prevent defects is essential."

19 56% of all bugs are introduced in requirements. (CHAOS Report)

20 Root Cause Analysis

21 Popping the Why Stack...

22

23 Protect Revenue Increase Revenue Manage Cost

24

25 Feature: title * not executed * documentation value * variant of contextra * business value up front In order to [Business Value] As a [Role] I want to [Some Action] (feature)

26 There is no template. What is important to have in narrative: * business value * stakeholder role * user role * action to be taken by user

27 <rant>

28 Writing Software not code With Behaviour Driven Development Ben Mabey

29 != BDD

30 != BDD

31 RSpec!= BDD

32 RSpec!= BDD

33 All of these tools are great... but, in the, tools are tools. While RSpec and Cucumber are optimized for BDD, using them doesn t automatically mean you re doing BDD" The RSpec Book

34 BDD is a mindset not a tool set

35 </rant>

36 Feature: title * not executed * documentation value * variant of contextra * business value up front In order to [Business Value] As a [Role] I want to [Some Action] (feature)

37 Scenario: title Given [Context] When I do [Action] Then I should see [Outcome]

38 Scenario: title Given [Context] And [More Context] When I do [Action] And [Other Action] Then I should see [Outcome] But I should not see [Outcome]

39 project_root/ `-- features

40 project_root/ `-- features -- awesomeness.feature -- greatest_ever.feature

41 project_root/ `-- features -- awesomeness.feature -- greatest_ever.feature `-- support -- env.rb `-- other_helpers.rb

42 project_root/ `-- features -- awesomeness.feature -- greatest_ever.feature `-- support -- env.rb `-- other_helpers.rb -- step_definitions -- domain_concept_a.rb `-- domain_concept_b.rb

43 Step Given a widget

44 Step Definition Given a widget Given /^a widget$/ do #codes go here

45 Step Definition Step Mother Given a widget Given /^a widget$/ do #codes go here

46 Step Definition Step Mother Given a widget Given /^a widget$/ do #codes go here

47

48

49

50 28+ Languages

51 28+ Languages

52 28+ Languages RSpec, Test::Unit, etc

53 28+ Languages Your Code RSpec, Test::Unit, etc

54 Not Just for Rails

55 Outside-In

56

57

58 Write Scenarios

59 Steps are ping

60 Write Step Definition

61 Go Down A Gear

62 RSpec, TestUnit, etc

63 Write Code Example (Unit Test)

64 Make Example Pass

65 REFACTOR!!

66 Where Are we?

67 Continue until...

68 REFACTOR and REPEAT

69 features/manage_my_wishes.feature Feature: manage my wishes In order to get more stuff As a greedy person I want to manage my wish list for my family members to Scenario: add Scenario: remove Scenario: tweet wish

70 features/manage_my_wishes.feature Feature: manage my wishes In order to get more stuff Work In Progress As a greedy person I want to manage my wish list for my family members to Scenario: add wish Given I am logged in When I make a "New car" wish Then "New car" should appear on my wish Scenario: remove Scenario: tweet wish

71 Workflow

72 Workflow git branch -b add_wish_tracker#

73 Workflow git branch -b add_wish_tracker# Tag Scenario or Feature

74 Workflow git branch -b add_wish_tracker# Tag Scenario or Feature cucumber --wip

75 Workflow git branch -b add_wish_tracker# Tag Scenario or Feature cucumber --wip Develop it Outside-In

76 Workflow git branch -b add_wish_tracker# Tag Scenario or Feature cucumber --wip Develop it Outside-In git rebase ---interactive; git merge

77 Workflow git branch -b add_wish_tracker# Tag Scenario or Feature cucumber --wip Develop it Outside-In git rebase ---interactive; git merge Repeat!

78 @wip on master?

79 @wip on master? $ rake -T cucumber

80 @wip on master? $ rake -T cucumber rake cucumber:ok OR rake cucumber

81 @wip on master? $ rake -T cucumber rake cucumber:ok OR rake cucumber cucumber --tags ~@wip --strict

82 @wip on master? $ rake -T cucumber Tag Exclusion rake cucumber:ok OR rake cucumber cucumber --tags ~@wip --strict

83 @wip on master? $ rake -T cucumber

84 @wip on master? $ rake -T cucumber rake cucumber:wip

85 @wip on master? $ rake -T cucumber rake cucumber:wip cucumber --wip

86 @wip on master? $ rake -T cucumber rake cucumber:wip Limit tags in flow cucumber --wip

87 @wip on master? $ rake -T cucumber rake cucumber:wip Limit tags in flow cucumber --wip Expect failure - Success == Failure

88 @wip on master? $ rake -T cucumber rake cucumber:all Runs both ok and wip -- great for CI

89 features/manage_my_wishes.feature Feature: manage my wishes In order to get more stuff As a greedy person I want to manage my wish list for my family members to Scenario: add wish Given I am logged in When I make a "New car" wish Then "New car" should appear on my wish Scenario: remove Scenario: tweet wish

90

91 Line # of scenario

92

93 Look Ma! backtraces! Given I am logged in #features/manage_my_wishes.feature:8

94

95

96 features/step_definitions/user_steps.rb Given /^I am logged in$/ = create_user(: _confirmed => true)

97 features/step_definitions/user_steps.rb Given /^I am logged in$/ = create_user(: _confirmed => true) Test Data Builder / Object Mother

98 features/step_definitions/user_steps.rb Given /^I am logged in$/ = create_user(: _confirmed => true) Fixture Replacement, Fixjour, Factory Girl, etc spec/fixjour_builders.rb Fixjour do define_builder(user) do klass, overrides klass.new( : => "user#{counter(:user)}@ .com", :password => 'password', :password_confirmation => 'password' )

99 features/step_definitions/user_steps.rb Given /^I am logged in$/ = create_user(: _confirmed => true)

100 features/step_definitions/user_steps.rb Given /^I am logged in$/ = create_user(: _confirmed => true) visit new_session_path fill_in " ", :with fill_in "Password", :with => valid_user_attributes["password"] click_button

101 features/step_definitions/user_steps.rb Webrat / Awesomeness Given /^I am logged in$/ = create_user(: _confirmed => true) visit new_session_path fill_in " ", :with fill_in "Password", :with => valid_user_attributes["password"] click_button

102 features/step_definitions/user_steps.rb Webrat / Awesomeness Given /^I am logged in$/ = create_user(: _confirmed => true) visit new_session_path fill_in " ", :with fill_in "Password", :with => valid_user_attributes["password"] click_button

103 features/step_definitions/user_steps.rb Webrat / Awesomeness Given /^I am logged in$/ = create_user(: _confirmed => true) visit new_session_path fill_in " ", :with fill_in "Password", :with => valid_user_attributes["password"] click_button features/support/env.rb require 'webrat' Webrat.configure do config config.mode = :rails

104 features/step_definitions/user_steps.rb Webrat / Awesomeness Given /^I am logged in$/ = create_user(: _confirmed => true) visit new_session_path fill_in " ", :with fill_in "Password", :with => valid_user_attributes["password"] click_button features/support/env.rb require 'webrat' Webrat.configure do config config.mode = :rails Adapter

105 features/step_definitions/user_steps.rb Webrat / Awesomeness Given /^I am logged in$/ = create_user(: _confirmed => true) visit new_session_path fill_in " ", :with fill_in "Password", :with => valid_user_attributes["password"] click_button features/step_definitions/webrat_steps.rb When /^I press "(.*)"$/ do button click_button(button) When /^I follow "(.*)"$/ do link click_link(link) 20+ Steps Out-of-box When /^I fill in "(.*)" with "(.*)"$/ do field, value fill_in(field, :with => value)

106 features/step_definitions/user_steps.rb Given /^I am logged in$/ = create_user(: _confirmed => true) visit new_session_path fill_in " ", :with fill_in "Password", :with => valid_user_attributes["password"] click_button

107 features/step_definitions/user_steps.rb Given /^I am logged in$/ = create_user(: _confirmed => true) visit new_session_path fill_in " ", :with fill_in "Password", :with => valid_user_attributes["password"] click_button # make sure we have actually logged in- so we fail fast if not session[:user_id].should

108 features/step_definitions/user_steps.rb Given /^I am logged in$/ = create_user(: _confirmed => true) visit new_session_path fill_in " ", :with fill_in "Password", :with => valid_user_attributes["password"] click_button # make sure we have actually logged in- so we fail fast if not session[:user_id].should controller.current_user.should

109 features/step_definitions/user_steps.rb Given /^I am logged in$/ = create_user(: _confirmed => true) visit new_session_path Specify fill_in " ", outcome, :with not implementation. fill_in "Password", :with => valid_user_attributes["password"] click_button # make sure we have actually logged in- so we fail fast if not session[:user_id].should controller.current_user.should response.should contain("signed in successfully")

110 features/step_definitions/user_steps.rb Given /^I am logged in$/ = create_user(: _confirmed => true) visit new_session_path fill_in " ", :with fill_in "Password", :with => valid_user_attributes["password"] click_button # make sure we have actually logged in- so we fail fast if not response.should contain("signed in successfully")

111

112 No route matches /sessions/create with {:method=>:post} (ActionController::RoutingError)

113 I m going to cheat...

114 I m going to cheat... $ gem install thoughtbot-clearance $./script generate clearance $./script generate clearance_features

115 Authlogic?

116

117 features/step_definitions/wish_steps.rb When /^I make a "(.+)" wish$/ do wish Then /^(.+) should appear on my wish list$/ do wish

118 features/step_definitions/wish_steps.rb When /^I make a "(.+)" wish$/ do wish Then /^(.+) should appear on my wish list$/ do wish Regexp Capture -> Yielded Variable

119 features/step_definitions/wish_steps.rb When /^I make a "(.+)" wish$/ do wish visit "/wishes" click_link "Make a wish" fill_in "Wish", :with => wish click_button Then /^(.+) should appear on my wish list$/ do wish

120 features/step_definitions/wish_steps.rb When /^I make a "(.+)" wish$/ do wish visit "/wishes" click_link "Make a wish" fill_in "Wish", :with => wish click_button Then /^(.+) should appear on my wish list$/ do wish response.should contain("your wish has been added!") response.should contain(wish)

121 features/step_definitions/wish_steps.rb When /^I make a "(.+)" wish$/ do wish visit "/wishes" click_link "Make a wish" fill_in "Wish", :with => wish click_button No route matches /wishes with {:method=>:get} (ActionController::RoutingError) Then /^(.+) should appear on my wish list$/ do wish response.should contain("your wish has been added!") response.should contain(wish)

122 config/routes.rb ActionController::Routing::Routes.draw do map map.resources :wishes

123 config/routes.rb ActionController::Routing::Routes.draw do map map.resources :wishes When I make a New car wish uninitialized constant WishesController (NameError)

124 config/routes.rb ActionController::Routing::Routes.draw do map map.resources :wishes $./script generate rspec_controller new create

125 config/routes.rb ActionController::Routing::Routes.draw do map map.resources :wishes When I make a New car wish Could not find link with text or title or id Make a wish (Webrat::NotFoundError)

126 app/views/wishes/index.html.erb <%= link_to "Make a wish", new_wish_path %>

127 app/views/wishes/index.html.erb <%= link_to "Make a wish", new_wish_path %> When I make a New car wish Could not find field: Wish (Webrat::NotFoundError)

128 features/step_definitions/wish_steps.rb When /^I make a "(.+)" wish$/ do wish visit "/wishes" click_link "Make a wish" fill_in "Wish", :with => wish click_button

129 features/step_definitions/wish_steps.rb When /^I make a "(.+)" wish$/ do wish visit "/wishes" click_link "Make a wish" fill_in "Wish", :with => wish click_button app/views/wishes/new.html.erb <% form_for :wish do f %> <%= f.label :name, "Wish" %> <%= f.text_field :name %> <%= submit_tag "Make the wish!" %> <% %>

130 features/step_definitions/wish_steps.rb When /^I make a "(.+)" wish$/ do wish visit "/wishes" click_link "Make a wish" fill_in "Wish", :with => wish click_button app/views/wishes/new.html.erb <% form_for :wish do f %> <%= f.label :name, "Wish" %> <%= f.text_field :name %> <%= submit_tag "Make the wish!" %> <% %> Location Strategy FTW!

131 View Controller

132 spec/controllers/wishes_controller_spec.rb describe WishesController do describe "POST / (#create)" do

133 spec/controllers/wishes_controller_spec.rb describe WishesController do describe "POST / (#create)" do it "creates a new wish for the user with the params" do user = mock_model(user, :wishes => mock("wishes association")) controller.stub!(:current_user).and_return(user) user.wishes.should_receive(:create).with(wish_params) post :create, 'wish' => {'name' => 'Dog'}

134 app/controllers/wishes_controller.rb class WishesController < ApplicationController def create current_user.wishes.create(params['wish'])

135 spec/controllers/wishes_controller_spec.rb describe WishesController do describe "POST / (#create)" do before(:each) do... it "redirects the user to their wish list" do do_post response.should redirect_to(wishes_path)

136 app/controllers/wishes_controller.rb def create current_user.wishes.create(params['wish']) redirect_to :action => :index

137 View Controller Model

138 app/controllers/wishes_controller.rb def create current_user.wishes.create(params['wish']) redirect_to :action => :index When I make a New car wish undefined method `wishes` for #<User:0x268e898> (NoMethodError)

139 app/controllers/wishes_controller.rb def create current_user.wishes.create(params['wish']) redirect_to :action => :index $./script generate rspec_model wish name:string user_id:integer

140 app/models/wish.rb class Wish < ActiveRecord::Base belongs_to :user app/models/user.rb class User < ActiveRecord::Base include Clearance::App::Models::User has_many :wishes

141 app/models/wish.rb class Wish < ActiveRecord::Base belongs_to :user app/models/user.rb When I make a New car wish Then New car should appear on my wish expected the following element s content to include Your wish has been added! class User < ActiveRecord::Base include Clearance::App::Models::User has_many :wishes

142 spec/controllers/wishes_controller_spec.rb it "notifies the user of creation via the flash" do do_post flash[:success].should == "Your wish has been added!"

143 spec/controllers/wishes_controller_spec.rb it "notifies the user of creation via the flash" do do_post flash[:success].should == "Your wish has been added!" app/controllers/wishes_controller.rb def create current_user.wishes.create(params['wish']) flash[:success] = "Your wish has been added!" redirect_to :action => :index

144 spec/controllers/wishes_controller_spec.rb it "should notifies the user of creation via the flash" do do_post flash[:success].should == "Your wish has been added!" app/controllers/wishes_controller.rb Then New car should appear on my wish expected the following element s content to include New car def create current_user.wishes.create(params['wish']) flash[:success] = "Your wish has been added!" redirect_to :action => :index

145 app/views/wishes/index.html.erb <ul> do wish %> <li><%= wish.name %></li> <% %> </ul>

146 spec/controllers/wishes_controller_spec.rb describe "GET / (#index)" do def do_get get :index it "assigns the user's wishes to the view" do do_get assigns[:wishes].should

147 app/controllers/wishes_controller.rb def = current_user.wishes

148

149 How do I test JS and AJAX? FAQ

150

151 Slow Fast

152 Slow Integrated Fast Isolated

153 Slow Integrated Fast Isolated

154 Slow Integrated Fast Isolated

155 Slow Integrated Fast Isolated

156 Slow Integrated Fast Isolated

157 Slow Fast

158 Slow Fast Joyful

159 Slow Painful Fast Joyful

160 Slow Painful Celerity Fast Joyful

161 Celerity

162 Celerity HtmlUnit

163 Celerity HtmlUnit

164 Celerity HtmlUnit

165 Celerity HtmlUnit

166 require "rubygems" require "celerity" browser = Celerity::Browser.new browser.goto(' browser.text_field(:name, 'q').value = 'Celerity' browser.button(:name, 'btng').click puts "yay" if browser.text.include? 'celerity.rubyforge.org'

167 What if I use MRI?

168 Culerity

169 require "rubygems" require "culerity" culerity_server = Culerity::run_server browser = Culerity::RemoteBrowserProxy.new(culerity_server) browser.goto(' browser.text_field(:name, 'q').value = 'Celerity' browser.button(:name, 'btng').click puts "yay" if browser.text.include? 'celerity.rubyforge.org'

170 Celerity +

171 HtmlUnit +

172 CodeNote

173 Feature: CLI Server In order to save me time and headaches As a presenter of code I create a presentation in plaintext a'la Slidedown (from Pat Nakajima) and have CodeNote serve it up for me For example of how to test CLI tools take a look at CodeNote on github. RSpec and Cucumber also have good examples of how to do this. Scenario: basic presentation loading and viewing Given that the codenote server is not running And a file named "presentation.md" with: """!TITLE My Presentation!PRESENTER Ben Mabey # This is the title slide!slide # This is second slide... """ When I run "codenote_load presentation.md" And I run "codenote" And I visit the servers address

174 Feature: Twitter Quiz In order to encourage audience participation where 90% of the audience is hacking on laptops As a presenter I want audience members To answer certain questions via twitter

175 Feature: Twitter Quiz In order to encourage audience participation where 90% of the audience is hacking on laptops As a presenter I want audience members To answer certain questions via Scenario: waiting for an Scenario: winner is Scenario: fail Scenario: network timeout

176 Feature: Twitter Quiz In order to encourage audience participation where 90% of the audience is hacking on laptops As a presenter I want audience members To answer certain questions via Scenario: waiting for an answer

177 @wip Scenario: waiting for an answer Given the following presentation """!TITLE American History!PRESENTER David McCullough # Wanna win a prize? ### You'll have to answer a question... ### in a tweet! First correct tweet wins!!slide # Who shot Alexander Hamilton? ## You must use #free_stuff in your tweet.!dynamic-slide TwitterQuiz '#free_stuff "aaron burr"'!slide Okay, that was fun. Lets actually start now. """

178 @wip Scenario: waiting for an answer Given the following presentation """!TITLE American History!PRESENTER David McCullough # Wanna win a prize? ### You'll have to answer a question... ### in a tweet! First correct tweet wins!!slide # Who shot Alexander Hamilton? ## You must use #free_stuff in your tweet.!dynamic-slide TwitterQuiz '#free_stuff "aaron burr"'!slide Okay, that was fun. Lets actually start now. """

179 @wip Scenario: waiting for an answer Given the following presentation... And no tweets have been tweeted that match the '#free_stuff "aaron burr"' search When the presenter goes to the 3rd slide And I go to the 3rd slide Then I should see "And the winner is..." And I should see an ajax spinner

180 Given the following presentation """ blah, blah """ Given /the following presentation$/ do presentation

181 Given the following presentation """ blah, blah """ Given /the following presentation$/ do presentation Yields the multi-line string

182 Given the following presentation """ blah, blah """ Given /the following presentation$/ do presentation CodeNote::PresentationLoader.setup(presentation)

183 RSpec Cycle

184 And no tweets have been tweeted that match the '#free_stuff "aaron burr"' search

185 How do I test web services? FAQ

186

187 page = `curl -is FakeWeb.register_uri(:get, " :response => page) Net::HTTP.get(URI.parse(" # => Full response, including headers

188 And no tweets have been tweeted that match the '#free_stuff "aaron burr"' search Given %r{no tweets have been tweeted that match the '([']*)' search$} do query

189 And no tweets have been tweeted that match the '#free_stuff "aaron burr"' search Given %r{no tweets have been tweeted that match the '([']*)' search$} do query FakeWeb.register_uri(:get, search_url_for(query), :body => canned_response_for(query))

190 Given %r{no tweets have been tweeted that match the '([']*)' search$} do query FakeWeb.register_uri(:get, search_url_for(query), :body => canned_response_for(query))

191 Given %r{no tweets have been tweeted that match the '([']*)' search$} do query FakeWeb.register_uri(:get, search_url_for(query), :body => canned_response_for(query)) Helpers

192 Given %r{no tweets have been tweeted that match the '([']*)' search$} do query FakeWeb.register_uri(:get, search_url_for(query), :body => canned_response_for(query)) Helpers def search_url_for(query) " def canned_response_for(query)... return file_path

193 Given %r{no tweets have been tweeted that match the '([']*)' search$} do query FakeWeb.register_uri(:get, search_url_for(query), :body => canned_response_for(query)) def search_url_for(query) " def canned_response_for(query)... return file_path

194 Given %r{no tweets have been tweeted that match the '([']*)' search$} do query FakeWeb.register_uri(:get, search_url_for(query), :body => canned_response_for(query)) def search_url_for(query) " def canned_response_for(query)... return file_path

195 Given %r{no tweets have been tweeted that match the '([']*)' search$} do query FakeWeb.register_uri(:get, search_url_for(query), :body => canned_response_for(query)) Every time you monkeypatch def search_url_for(query) Object, a kitten dies. " def canned_response_for(query)... return file_path

196 Given %r{no tweets have been tweeted that match the '([']*)' search$} do query FakeWeb.register_uri(:get, search_url_for(query), :body => canned_response_for(query)) module TwitterHelpers def search_url_for(query) " def canned_response_for(query)... return file_path

197 Given %r{no tweets have been tweeted that match the '([']*)' search$} do query FakeWeb.register_uri(:get, search_url_for(query), :body => canned_response_for(query)) module TwitterHelpers def search_url_for(query) " def canned_response_for(query)... return file_path World(TwitterHelpers)

198 Given %r{no tweets have been tweeted that match the '([']*)' search$} do query FakeWeb.register_uri(:get, search_url_for(query), :body => canned_response_for(query)) module TwitterHelpers def search_url_for(query) " def canned_response_for(query)... return file_path World(TwitterHelpers)

199 When the presenter goes to the 3rd slide

200 When the presenter goes to the 3rd slide When /the presenter goes to the (\d+)(?:st nd rd th) slide$/ do slide_number presenter_browser.goto path('/') (slide_number.to_i - 1).times do presenter_browser.link(:text, "Next").click

201 When the presenter goes to the 3rd slide When /the presenter goes to the (\d+)(?:st nd rd th) slide$/ do slide_number presenter_browser.goto path('/') (slide_number.to_i - 1).times do presenter_browser.link(:text, "Next").click Presenter has own browser, multiple sessions!

202 And I go to the 3rd slide Then I should see "And the winner is..."

203 And I go to the 3rd slide Then I should see "And the winner is..." When /I go to the (\d+)(?:st nd rd th) slide$/ do slide_number browser.goto path("/slides/#{slide_number}")

204 And I go to the 3rd slide Then I should see "And the winner is..." When /I go to the (\d+)(?:st nd rd th) slide$/ do slide_number browser.goto path("/slides/#{slide_number}") Then /I should see "(["]*)"$/ do text browser.should contain(text)

205 And I should see an ajax spinner

206 And I should see an ajax spinner Then /I should see an ajax spinner$/ do browser.image(:id, 'spinner').exists?.should be_true

207 Brief RSpec cycle?

208 Scenario: waiting for an answer Given the following presentation... And no tweets have been tweeted that match the '#free_stuff "aaron burr"' search When the presenter goes to the 3rd slide And I go to the 3rd slide Then I should see "And the winner is..." And I should see an ajax spinner

209 Feature: Twitter Quiz In order to encourage audience participation where 90% of the audience is hacking on laptops As a presenter I want audience members To answer certain questions via twitter Scenario: waiting for an Scenario: winner is displayed

210 @wip Scenario: winner is displayed Given the following presentation... And no tweets have been tweeted that match the '#free_stuff "aaron burr"' search

211 @wip Scenario: winner is displayed Given the following presentation... And no tweets have been tweeted that match the '#free_stuff "aaron burr"' search Duplication of context!

212 Feature: Twitter Quiz... Background: A presentation with a Twitter Quiz Given the following presentation """ blah, blah """ And no tweets have been tweeted that match the '#free_stuff "aaron burr"' search Scenario: waiting for an answer When the presenter goes to the 3rd slide And I go to the 3rd slide Then I should see "And the winner is..." And I should see an ajax Scenario: winner is displayed Extract to Background

213 @wip Scenario: winner is displayed When the following tweets are tweeted that match the '#free_stuff "aaron burr"' search From User Text Created Aaron Burr shot Alexander Hamilton #free_stuff 1 minute Aaron Burr shot Alexander Hamilton #free_stuff 2 minutes ago And the presenter goes to the 3rd slide And I go to the 3rd slide Then I should tweet along with his avatar

214 When the following tweets are tweeted that match the '#free_stuff "aaron burr"' search From User Text Created Aaron Burr shot Alexander Hamilton #free_stuff 1 minute Aaron Burr shot Alexander Hamilton #free_stuff 2 minutes ago

215 When the following tweets are tweeted that match the '#free_stuff "aaron burr"' search From User Text Created Aaron Burr shot Alexander Hamilton #free_stuff 1 minute Aaron Burr shot Alexander Hamilton #free_stuff 2 minutes ago When %r{the following tweets are tweeted that match the '([']*)' search$} do query, tweet_table

216 When the following tweets are tweeted that match the '#free_stuff "aaron burr"' search From User Text Created Aaron Burr shot Alexander Hamilton #free_stuff 1 minute Aaron Burr shot Alexander Hamilton #free_stuff 2 minutes ago When %r{the following tweets are tweeted that match the '([']*)' search$} do query, tweet_table Cucumber::AST::Table

217 When the following tweets are tweeted that match the '#free_stuff "aaron burr"' search From User Text Created Aaron Burr shot Alexander Hamilton #free_stuff 1 minute Aaron Burr shot Alexander Hamilton #free_stuff 2 minutes ago When %r{the following tweets are tweeted that match the '([']*)' search$} do query, tweet_table FakeWeb.register_uri(:get, search_url_for(query), :body => canned_response_for(query))

218 When the following tweets are tweeted that match the '#free_stuff "aaron burr"' search From User Text Created Aaron Burr shot Alexander Hamilton #free_stuff 1 minute Aaron Burr shot Alexander Hamilton #free_stuff 2 minutes ago When %r{the following tweets are tweeted that match the '([']*)' search$} do query, tweet_table FakeWeb.register_uri(:get, search_url_for(query), :body => canned_response_for(query)) Umm... that won t work.

219 When the following tweets are tweeted that match the '#free_stuff "aaron burr"' search From User Text Created Aaron Burr shot Alexander Hamilton #free_stuff 1 minute Aaron Burr shot Alexander Hamilton #free_stuff 2 minutes ago When %r{the following tweets are tweeted that match the '([']*)' search$} do query, tweet_table FakeWeb.register_uri(:get, search_url_for(query), :body => canned_response_for(query)) What I would really like is a test data builder/factory for twitter searches...

220 require 'faketwitter' FakeTwitter.register_search("#cheese", {:results => [{:text => "#cheese is good"}]}) require 'twitter_search' TwitterSearch::Client.new('').query('#cheese') is 21 Aug @profile_image_url=" s3.amazonaws.com/twitter_production/profile_images/1/ photo.jpg">]

221 When the following tweets are tweeted that match the '#free_stuff "aaron burr"' search From User Text Created Aaron Burr shot Alexander Hamilton #free_stuff 1 minute Aaron Burr shot Alexander Hamilton #free_stuff 2 minutes ago When %r{the following tweets are tweeted that match the '([']*)' search$} do query, tweet_table FakeTwitter.register_search(query, { :results => tweet_table.hashes})

222 When the following tweets are tweeted that match the '#free_stuff "aaron burr"' search From User Text Created Aaron Burr shot Alexander Hamilton #free_stuff 1 minute Aaron Burr shot Alexander Hamilton #free_stuff 2 minutes ago When %r{the following tweets are tweeted that match the '([']*)' search$} do query, tweet_table FakeTwitter.register_search(query, { :results => tweet_table.hashes}) Our headers and columns aren t compatible with API.

223 When the following tweets are tweeted that match the '#free_stuff "aaron burr"' search From User Text Created Aaron Burr shot Alexander Hamilton #free_stuff 1 minute Aaron Burr shot Alexander Hamilton #free_stuff 2 minutes ago When %r{the following tweets are tweeted that match the '([']*)' search$} do query, tweet_table tweet_table.map_headers! do header header.downcase.gsub(' ','_') FakeTwitter.register_search(query, { :results => tweet_table.hashes})

224 When the following tweets are tweeted that match the '#free_stuff "aaron burr"' search From User Text Created Aaron Burr shot Alexander Hamilton #free_stuff 1 minute Aaron Burr shot Alexander Hamilton #free_stuff 2 minutes ago When %r{the following tweets are tweeted that match the '([']*)' search$} do query, tweet_table tweet_table.map_headers! do header header.downcase.gsub(' ','_') tweet_table.map_column!('created_at') do relative_time interpret_time(relative_time) FakeTwitter.register_search(query, { :results => tweet_table.hashes})

225 @wip Scenario: winner is displayed When the following tweets are tweeted that match the '#free_stuff "aaron burr"' search From User Text Created Aaron Burr shot Alexander Hamilton #free_stuff 1 minute Aaron Burr shot Alexander Hamilton #free_stuff 2 minutes ago And the presenter goes to the 3rd slide And I go to the 3rd slide Then I should tweet along with his avatar

226 Then %r{i should tweet along with (?:his her) avatar$} do user tweet = FakeTwitter.tweets_from(user).first browser.should contain(tweet['text'], :wait => 10) browser.should have_image(:src, tweet['profile_image_url']) Timeout

227 Then %r{i should tweet along with (?:his her) avatar$} do user tweet = FakeTwitter.tweets_from(user).first browser.should contain(tweet['text'], :wait => 10) browser.should have_image(:src, tweet['profile_image_url']) Spec::Matchers.define :contain do text, options match do browser options[:wait] = 0 browser.wait_until(options[:wait]) do browser.text.include?(text)

228 Then %r{i should tweet along with (?:his her) avatar$} do user tweet = FakeTwitter.tweets_from(user).first browser.should contain(tweet['text'], :wait => 10) browser.should have_image(:src, tweet['profile_image_url']) Spec::Matchers.define :contain do text, options match do browser options[:wait] = 0 browser.wait_until(options[:wait]) do browser.text.include?(text) Keep trying after sleeping until it times out

229 RSpec Cycle

230 Scenario: winner is displayed When the following tweets are tweeted that match the '#free_stuff "aaron burr"' search From User Text Created Aaron Burr shot Alexander Hamilton #free_stuff 1 minute Aaron Burr shot Alexander Hamilton #free_stuff 2 minutes ago And the presenter goes to the 3rd slide And I go to the 3rd slide Then I should tweet along with his avatar

231 Demo!

232 More tricks...

233

234 Scenario: view members list Given the following wishes exist Wish Family Member Laptop Thomas Ninto Wii Candace CHEEZBURGER FuzzBuzz When I view the wish list for "Candace" Then I should see the following wishes Wish Ninto Wii

235 Given the following wishes exist Wish Family Member Laptop Thomas Ninto Wii Candace CHEEZBURGER FuzzBuzz features/step_definitions/wish_steps.rb Given /^the following wishes exist$/ do table

236 Given the following wishes exist Wish Family Member Laptop Thomas Ninto Wii Candace CHEEZBURGER FuzzBuzz features/step_definitions/wish_steps.rb Given /^the following wishes exist$/ do table table.hashes.each do row member = User.find_by_name(row["Family Member"]) create_user(:name => row["family Member"]) member.wishes.create!(:name => row["wish"])

237 Table Diffing

238 Feature: Addition In order to avoid silly mistakes As a math idiot I want to be told the sum of two numbers Scenario Outline: Add two numbers Given I have entered <input_1> into the calculator And I have entered <input_2> into the calculator When I press <button> Then the result should be <output> on the screen Scenarios: input_1 input_2 button output add add add 40

239 Feature: Addition In order to avoid silly mistakes As a math idiot I want to be told the sum of two numbers Scenario Outline: Add two numbers Given I have entered <input_1> into the calculator And I have entered <input_2> into the calculator When I press <button> Then the result should be <output> on the screen Scenarios: addition input_1 input_2 button output add add 7 Scenarios: subtraction 0 40 minus -40

240 Feature: Addition In order to avoid silly mistakes As a math idiot I want to be told the sum of two numbers Scenario Outline: Add two numbers Given I have entered <input_1> into the calculator And I have entered <input_2> into the calculator When I press <button> Then the result should be <output> on the screen Scenarios: input_1 input_2 button output add add add 40

241 Feature: Addition In order to avoid silly mistakes As a math idiot I want to be told the sum of two numbers Scenario Outline: Add two numbers Given I have entered <input_1> into the calculator And I have entered <input_2> into the calculator When I press <button> Then the result should be <output> on the screen Scenarios: input_1 input_2 button output add add add 40

242 Feature: Addition In order to avoid silly mistakes As a math idiot I want to be told the sum of two numbers Scenario Outline: Add two numbers Given I have entered <input_1> into the calculator And I have entered <input_2> into the calculator When I press <button> Then the result should be <output> on the screen Scenarios: input_1 input_2 button output add add add 40

243 Steps Within Steps When /^I view the wish list for "(.+)"$/ do user_name Given "I am logged in" visit "/wishes/#{user_name}"

244 Steps Within Steps When /^I view the wish list for "(.+)"$/ do user_name Given "I am logged in" visit "/wishes/#{user_name}"

245 Hooks Before do After do scenario World do World(MyModule) World(HerModule)

246 Tagged Hooks = Feature: Lorem Scenario: Ipsum Scenario: Dolor Feature: Scenario: Amet Scenario: Consec

247 Spork Sick of slow loading times? Spork will load your main environment once. It then runs a DRB server so cucumber (or RSpec) can run against it with the --drb flag. For each test run Spork forks a child process to run them in a clean memory state. So.. it is a DRb server that forks.. hence Spork. :)

248 Drinking the Cucumber Kool-Aid?

249 Integration tests are a scam J. B. Rainsberger Obviously, I don t agree with this 100%. But he has some valid points. Integrations tests are not a replacement for good unit tests. Use cucumber for happy paths. Use lower level tests for design and to isolate object behavior.

250 Cucumber is a good hammer

251 Cucumber is a good hammer Not everything is a nail

252 I can skp teh unit testz?

253 Acceptance Tests Application Level For Customers Slow Good confidence Prevent against regression Unit Tests Object Level- Isolated! For developers FAST! (should be at least) - Tighter Feedback Loop More about design!!!!!!!!!!!! Will need both gears! Some things are easier to test at the application level and vice-versa.

254 SRSLY? Model specs, Controller Specs, and view specs!?

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258 W

259 M

260 More tests == More Maintenance

261 Test Value = Design + Documentation + Defence (regression)

262 if test.value > test.cost Suite.add(test)

263 KTHXBYE! BenMabey.com github.com/bmabey Twitter: bmabey IRC: mabes