Writing Software not Code with Cucumber

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Describes Outside-In development and Behvaiour Driven Development. Illustrates basic Cucumber usage within a Rails app and then goes over more advanced topics such as JS as web services.

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  • Hi All, We are planning to start Hadoop online training batch on this week... If any one interested to attend the demo please register in our website... For this batch we are also provide everyday recorded sessions with Materials. For more information feel free to contact us : siva@keylabstraining.com. For Course Content and Recorded Demo Click Here : http://www.keylabstraining.com/hadoop-online-training-hyderabad-bangalore
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Writing Software not Code with Cucumber

  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. Tweet in the blanks... "most software projects are like _ _ _ _ _ _ _ _" #rubyhoedown #cucumber
  6. "most software projects are like _ _ _ _ _ _ _ _" #rubyhoedown #cucumber
  7. So... why are software projects like “The Homer”?
  8. Feature Devotion Text Placing emphasis on features instead of overall outcome
  9. Shingeo Shingo of Toyota says...
  10. "Inspection to find defects is waste."
  11. "Inspection to find defects is waste." "Inspection to prevent defects is essential."
  12. 56% of all bugs are introduced in requirements. (CHAOS Report)
  13. Root Cause Analysis
  14. Popping the Why Stack...
  15. Protect Revenue Increase Revenue Manage Cost
  16. * not executed * documentation value Feature: title * variant of contextra * business value up front In order to [Business Value] As a [Role] I want to [Some Action] (feature)
  17. There is no template. What is important to have in narrative: * business value * stakeholder role * user role * action to be taken by user
  18. <rant>
  19. Writing Software not code With Behaviour Driven Development Ben Mabey
  20. != BDD
  21. != BDD
  22. RSpec != BDD
  23. RSpec != BDD
  24. “All of these tools are great... but, in the end, tools are tools. While RSpec and Cucumber are optimized for BDD, using them doesn’t automatically mean you’re doing BDD" The RSpec Book
  25. BDD is a mindset not a tool set
  26. </rant>
  27. * not executed * documentation value Feature: title * variant of contextra * business value up front In order to [Business Value] As a [Role] I want to [Some Action] (feature)
  28. Scenario: title Given [Context] When I do [Action] Then I should see [Outcome]
  29. 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]
  30. project_root/ | `-- features
  31. project_root/ | `-- features |-- awesomeness.feature |-- greatest_ever.feature
  32. project_root/ | `-- features |-- awesomeness.feature |-- greatest_ever.feature `-- support |-- env.rb `-- other_helpers.rb
  33. project_root/ | `-- features |-- awesomeness.feature |-- greatest_ever.feature `-- support |-- env.rb `-- other_helpers.rb |-- step_definitions | |-- domain_concept_A.rb | `-- domain_concept_B.rb
  34. Step Given a widget
  35. Step Definition Given /^a widget$/ do Given a widget #codes go here end
  36. Step Definition Step Mother Given /^a widget$/ do Given a widget #codes go here end
  37. Step Definition Step Mother Given /^a widget$/ do Given a widget #codes go here end
  38. 28+ Languages
  39. 28+ Languages
  40. 28+ Languages RSpec, Test::Unit, etc
  41. 28+ Languages Your Code RSpec, Test::Unit, etc
  42. Not Just for Rails
  43. Outside-In
  44. Write Scenarios
  45. Steps are pending
  46. Write Step Definition
  47. Go Down A Gear
  48. RSpec, TestUnit, etc
  49. Write Code Example (Unit Test)
  50. Make Example Pass
  51. REFACTOR!!
  52. Where Are we?
  53. Continue until...
  54. REFACTOR and REPEAT
  55. 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 view @proposed Scenario: add wish @proposed Scenario: remove wish @proposed Scenario: tweet wish
  56. 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 view @wip Scenario: add wish Given I am logged in When I make a "New car" wish Then "New car" should appear on my wish list @proposed Scenario: remove wish @proposed Scenario: tweet wish
  57. Workflow
  58. Workflow git branch -b add_wish_tracker#
  59. Workflow git branch -b add_wish_tracker# Tag Scenario or Feature with @wip
  60. Workflow git branch -b add_wish_tracker# Tag Scenario or Feature with @wip cucumber --wip --tags @wip
  61. Workflow git branch -b add_wish_tracker# Tag Scenario or Feature with @wip cucumber --wip --tags @wip Develop it Outside-In
  62. Workflow git branch -b add_wish_tracker# Tag Scenario or Feature with @wip cucumber --wip --tags @wip Develop it Outside-In git rebase ---interactive; git merge
  63. Workflow git branch -b add_wish_tracker# Tag Scenario or Feature with @wip cucumber --wip --tags @wip Develop it Outside-In git rebase ---interactive; git merge Repeat!
  64. @wip on master?
  65. @wip on master? $ rake -T cucumber
  66. @wip on master? $ rake -T cucumber rake cucumber:ok OR rake cucumber
  67. @wip on master? $ rake -T cucumber rake cucumber:ok OR rake cucumber cucumber --tags ~@wip --strict
  68. @wip on master? $ rake -T cucumber Tag Exclusion rake cucumber:ok OR rake cucumber cucumber --tags ~@wip --strict
  69. @wip on master? $ rake -T cucumber
  70. @wip on master? $ rake -T cucumber rake cucumber:wip
  71. @wip on master? $ rake -T cucumber rake cucumber:wip cucumber --tags @wip:2 --wip
  72. @wip on master? $ rake -T cucumber in flow Limit tags rake cucumber:wip cucumber --tags @wip:2 --wip
  73. @wip on master? $ rake -T cucumber in flow Limit tags rake cucumber:wip cucumber --tags @wip:2 --wip Expect failure - Success == Failure
  74. @wip on master? $ rake -T cucumber rake cucumber:all Runs both ok and wip -- great for CI
  75. 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 view @wip Scenario: add wish Given I am logged in When I make a "New car" wish Then "New car" should appear on my wish list @proposed Scenario: remove wish @proposed Scenario: tweet wish
  76. Line # of scenario
  77. Look Ma! backtraces! Given I am logged in #features/manage_my_wishes.feature:8
  78. features/step_definitions/user_steps.rb Given /^I am logged in$/ do @current_user = create_user(:email_confirmed => true) end
  79. features/step_definitions/user_steps.rb Given /^I am logged in$/ do @current_user = create_user(:email_confirmed => true) end Test Data Builder / Object Mother
  80. features/step_definitions/user_steps.rb Given /^I am logged in$/ do @current_user = create_user(:email_confirmed => true) end Fixture Replacement, Fixjour, Factory Girl, etc spec/fixjour_builders.rb Fixjour do define_builder(User) do |klass, overrides| klass.new( :email => "user#{counter(:user)}@email.com", :password => 'password', :password_confirmation => 'password' ) end end
  81. features/step_definitions/user_steps.rb Given /^I am logged in$/ do @current_user = create_user(:email_confirmed => true) end
  82. features/step_definitions/user_steps.rb Given /^I am logged in$/ do @current_user = create_user(:email_confirmed => true) visit new_session_path fill_in "Email", :with => @current_user.email fill_in "Password", :with => valid_user_attributes["password"] click_button end
  83. features/step_definitions/user_steps.rb Webrat / Awesomeness Given /^I am logged in$/ do @current_user = create_user(:email_confirmed => true) visit new_session_path fill_in "Email", :with => @current_user.email fill_in "Password", :with => valid_user_attributes["password"] click_button end
  84. features/step_definitions/user_steps.rb Webrat / Awesomeness Given /^I am logged in$/ do @current_user = create_user(:email_confirmed => true) visit new_session_path fill_in "Email", :with => @current_user.email fill_in "Password", :with => valid_user_attributes["password"] click_button end
  85. features/step_definitions/user_steps.rb Webrat / Awesomeness Given /^I am logged in$/ do @current_user = create_user(:email_confirmed => true) visit new_session_path fill_in "Email", :with => @current_user.email fill_in "Password", :with => valid_user_attributes["password"] click_button end features/support/env.rb require 'webrat' Webrat.configure do |config| config.mode = :rails end
  86. features/step_definitions/user_steps.rb Webrat / Awesomeness Given /^I am logged in$/ do @current_user = create_user(:email_confirmed => true) visit new_session_path fill_in "Email", :with => @current_user.email fill_in "Password", :with => valid_user_attributes["password"] click_button end features/support/env.rb require 'webrat' Webrat.configure do |config| config.mode = :rails end Adapter
  87. features/step_definitions/user_steps.rb Webrat / Awesomeness Given /^I am logged in$/ do @current_user = create_user(:email_confirmed => true) visit new_session_path fill_in "Email", :with => @current_user.email fill_in "Password", :with => valid_user_attributes["password"] click_button end features/step_definitions/webrat_steps.rb When /^I press "(.*)"$/ do |button| click_button(button) end 20+ Steps Out-of-box When /^I follow "(.*)"$/ do |link| click_link(link) end When /^I fill in "(.*)" with "(.*)"$/ do |field, value| fill_in(field, :with => value) end
  88. features/step_definitions/user_steps.rb Given /^I am logged in$/ do @current_user = create_user(:email_confirmed => true) visit new_session_path fill_in "Email", :with => @current_user.email fill_in "Password", :with => valid_user_attributes["password"] click_button end
  89. features/step_definitions/user_steps.rb Given /^I am logged in$/ do @current_user = create_user(:email_confirmed => true) visit new_session_path fill_in "Email", :with => @current_user.email fill_in "Password", :with => valid_user_attributes["password"] click_button # make sure we have actually logged in- so we fail fast if not session[:user_id].should == @current_user.id end
  90. features/step_definitions/user_steps.rb Given /^I am logged in$/ do @current_user = create_user(:email_confirmed => true) visit new_session_path fill_in "Email", :with => @current_user.email 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 == @current_user.id controller.current_user.should == @current_user end
  91. features/step_definitions/user_steps.rb Given /^I am logged in$/ do @current_user = create_user(:email_confirmed => true) visit new_session_path Specify outcome, not implementation. fill_in "Email", :with => @current_user.email fill_in "Password", :with => valid_user_attributes["password"] click_button # make sure we have actually logged in- so we fail fast if not session[:user_id].should == @current_user.id controller.current_user.should == @current_user response.should contain("Signed in successfully") end
  92. features/step_definitions/user_steps.rb Given /^I am logged in$/ do @current_user = create_user(:email_confirmed => true) visit new_session_path fill_in "Email", :with => @current_user.email 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") end
  93. No route matches “/sessions/create” with {:method=>:post} (ActionController::RoutingError)
  94. I’m going to cheat...
  95. I’m going to cheat... $ gem install thoughtbot-clearance $ ./script generate clearance $ ./script generate clearance_features
  96. Authlogic? http://github.com/hectoregm/groundwork
  97. features/step_definitions/wish_steps.rb When /^I make a "(.+)" wish$/ do |wish| end Then /^(.+) should appear on my wish list$/ do |wish| end
  98. features/step_definitions/wish_steps.rb When /^I make a "(.+)" wish$/ do |wish| end Then /^(.+) should appear on my wish list$/ do |wish| end Regexp Capture -> Yielded Variable
  99. features/step_definitions/wish_steps.rb When /^I make a "(.+)" wish$/ do |wish| visit "/wishes" click_link "Make a wish" fill_in "Wish", :with => wish click_button end Then /^(.+) should appear on my wish list$/ do |wish| end
  100. features/step_definitions/wish_steps.rb When /^I make a "(.+)" wish$/ do |wish| visit "/wishes" click_link "Make a wish" fill_in "Wish", :with => wish click_button end Then /^(.+) should appear on my wish list$/ do |wish| response.should contain("Your wish has been added!") response.should contain(wish) end
  101. features/step_definitions/wish_steps.rb When /^I make a "(.+)" wish$/ do |wish| visit "/wishes" click_link "Make a wish" fill_in "Wish", :with => wish click_button end No route matches “/wishes” with {:method=>:get} appear on my wish list$/ do |wish| Then /^(.+) should (ActionController::RoutingError) response.should contain("Your wish has been added!") response.should contain(wish) end
  102. config/routes.rb ActionController::Routing::Routes.draw do |map| map.resources :wishes
  103. config/routes.rb ActionController::Routing::Routes.draw do |map| map.resources :wishes When I make a “New car” wish uninitialized constant WishesController (NameError)
  104. config/routes.rb ActionController::Routing::Routes.draw do |map| map.resources :wishes $./script generate rspec_controller new create
  105. config/routes.rb ActionController::Routing::Routes.draw do |map| map.resources :wishes When I make a “New car” wish Could not find link with text or title or id “Make a wish” (Webrat::NotFoundError)
  106. app/views/wishes/index.html.erb <%= link_to "Make a wish", new_wish_path %>
  107. app/views/wishes/index.html.erb <%= link_to "Make a wish", new_wish_path %> When I make a “New car” wish Could not find field: “Wish” (Webrat::NotFoundError)
  108. features/step_definitions/wish_steps.rb When /^I make a "(.+)" wish$/ do |wish| visit "/wishes" click_link "Make a wish" fill_in "Wish", :with => wish click_button end
  109. features/step_definitions/wish_steps.rb When /^I make a "(.+)" wish$/ do |wish| visit "/wishes" click_link "Make a wish" fill_in "Wish", :with => wish click_button end app/views/wishes/new.html.erb <% form_for :wish do |f| %> <%= f.label :name, "Wish" %> <%= f.text_field :name %> <%= submit_tag "Make the wish!" %> <% end %>
  110. features/step_definitions/wish_steps.rb When /^I make a "(.+)" wish$/ do |wish| visit "/wishes" click_link "Make a wish" fill_in "Wish", :with => wish click_button end Location Strategy FTW! app/views/wishes/new.html.erb <% form_for :wish do |f| %> <%= f.label :name, "Wish" %> <%= f.text_field :name %> <%= submit_tag "Make the wish!" %> <% end %>
  111. View Controller
  112. spec/controllers/wishes_controller_spec.rb describe WishesController do describe "POST / (#create)" do end end
  113. 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'} end end end
  114. app/controllers/wishes_controller.rb class WishesController < ApplicationController def create current_user.wishes.create(params['wish']) end end
  115. 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) end end end
  116. app/controllers/wishes_controller.rb def create current_user.wishes.create(params['wish']) redirect_to :action => :index end
  117. View Controller Model
  118. app/controllers/wishes_controller.rb def create current_user.wishes.create(params['wish']) redirect_to :action => :index end When I make a “New car” wish undefined method `wishes` for #<User:0x268e898> (NoMethodError)
  119. app/controllers/wishes_controller.rb def create current_user.wishes.create(params['wish']) redirect_to :action => :index end $./script generate rspec_model wish name:string user_id:integer
  120. app/models/wish.rb class Wish < ActiveRecord::Base belongs_to :user end app/models/user.rb class User < ActiveRecord::Base include Clearance::App::Models::User has_many :wishes end
  121. app/models/wish.rb class Wish < ActiveRecord::Base belongs_to :user end app/models/user.rb When I make a “New car” wish Then “New <car” should appear on my wish class User ActiveRecord::Base include Clearance::App::Models::User has_many the following element’s content to include expected:wishes “Your wish has been added!” end
  122. 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!" end
  123. 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!" end app/controllers/wishes_controller.rb def create current_user.wishes.create(params['wish']) flash[:success] = "Your wish has been added!" redirect_to :action => :index end
  124. 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!" end app/controllers/wishes_controller.rb Then “New car” should appear on my wish expected the following element’s content to include def create “New car” current_user.wishes.create(params['wish']) flash[:success] = "Your wish has been added!" redirect_to :action => :index end
  125. app/views/wishes/index.html.erb <ul> <% @wishes.each do |wish| %> <li><%= wish.name %></li> <% end %> </ul>
  126. spec/controllers/wishes_controller_spec.rb describe "GET / (#index)" do def do_get get :index end it "assigns the user's wishes to the view" do do_get assigns[:wishes].should == @current_user.wishes end end
  127. app/controllers/wishes_controller.rb def index @wishes = current_user.wishes end
  128. How do I test JS and AJAX? FAQ
  129. Slow Fast
  130. Slow Integrated Fast Isolated
  131. Slow Integrated Fast Isolated
  132. Slow Integrated Fast Isolated
  133. Slow Integrated Fast Isolated
  134. Slow Integrated Fast Isolated
  135. Slow Fast
  136. Slow Fast Joyful
  137. Slow Painful Fast Joyful
  138. Slow Painful Celerity Fast Joyful
  139. Celerity
  140. Celerity HtmlUnit
  141. Celerity HtmlUnit
  142. Celerity HtmlUnit
  143. Celerity HtmlUnit
  144. require "rubygems" require "celerity" browser = Celerity::Browser.new browser.goto('http://www.google.com') browser.text_field(:name, 'q').value = 'Celerity' browser.button(:name, 'btnG').click puts "yay" if browser.text.include? 'celerity.rubyforge.org'
  145. What if I use MRI?
  146. Culerity http://github.com/langalex/culerity
  147. require "rubygems" require "culerity" culerity_server = Culerity::run_server browser = Culerity::RemoteBrowserProxy.new(culerity_server) browser.goto('http://www.google.com') browser.text_field(:name, 'q').value = 'Celerity' browser.button(:name, 'btnG').click puts "yay" if browser.text.include? 'celerity.rubyforge.org'
  148. Celerity + http://github.com/dstrelau/webrat
  149. HtmlUnit + http://github.com/johnnyt/webrat
  150. CodeNote http://github.com/bmabey/codenote
  151. Feature: CLI Server For example of how to In order to save me time and headaches test CLI tools take a look As a presenter of code at CodeNote on github. I create a presentation in plaintext RSpec and Cucumber also have good examples of a'la Slidedown (from Pat Nakajima) how to do this. and have CodeNote serve it up for me 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
  152. 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
  153. 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 @proposed Scenario: waiting for an answer @proposed Scenario: winner is displayed @proposed Scenario: fail whale @proposed Scenario: network timeout
  154. 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 @wip Scenario: waiting for an answer
  155. @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. """
  156. @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. """
  157. @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
  158. Given the following presentation """ blah, blah """ Given /the following presentation$/ do |presentation| end
  159. Given the following presentation """ blah, blah """ Given /the following presentation$/ do |presentation| end Yields the multi-line string
  160. Given the following presentation """ blah, blah """ Given /the following presentation$/ do |presentation| CodeNote::PresentationLoader.setup(presentation) end
  161. RSpec Cycle
  162. And no tweets have been tweeted that match the '#free_stuff "aaron burr"' search
  163. How do I test web services? FAQ
  164. http://github.com/chrisk/fakeweb
  165. http://github.com/chrisk/fakeweb page = `curl -is http://www.google.com/` FakeWeb.register_uri(:get, "http://www.google.com/", :response => page) Net::HTTP.get(URI.parse("http://www.google.com/")) # => Full response, including headers
  166. 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$} do |query| end
  167. And no tweets have been tweeted that match the '#free_stuff "aaron burr"' search Given %r{no tweets have been tweeted that match the '([']*)' search$} do |query| FakeWeb.register_uri(:get, search_url_for(query), :body => canned_response_for(query)) end
  168. Given %r{no tweets have been tweeted that match the '([']*)' search$} do |query| FakeWeb.register_uri(:get, search_url_for(query), :body => canned_response_for(query)) end
  169. Given %r{no tweets have been tweeted that match the '([']*)' search$} do |query| FakeWeb.register_uri(:get, search_url_for(query), :body => canned_response_for(query)) end Helpers
  170. Given %r{no tweets have been tweeted that match the '([']*)' search$} do |query| FakeWeb.register_uri(:get, search_url_for(query), :body => canned_response_for(query)) end Helpers def search_url_for(query) "http://search.twitter.com/search.json?q=#{CGI.escape(query)}" end def canned_response_for(query) .... return file_path end
  171. Given %r{no tweets have been tweeted that match the '([']*)' search$} do |query| FakeWeb.register_uri(:get, search_url_for(query), :body => canned_response_for(query)) end def search_url_for(query) "http://search.twitter.com/search.json?q=#{CGI.escape(query)}" end def canned_response_for(query) .... return file_path end
  172. Given %r{no tweets have been tweeted that match the '([']*)' search$} do |query| FakeWeb.register_uri(:get, search_url_for(query), :body => canned_response_for(query)) end def search_url_for(query) "http://search.twitter.com/search.json?q=#{CGI.escape(query)}" end def canned_response_for(query) .... return file_path end
  173. Given %r{no tweets have been tweeted that match the '([']*)' search$} do |query| FakeWeb.register_uri(:get, search_url_for(query), :body => canned_response_for(query)) end “Every time you monkeypatch def search_url_for(query) Object, a kitten dies.” "http://search.twitter.com/search.json?q=#{CGI.escape(query)}" end def canned_response_for(query) .... return file_path end
  174. Given %r{no tweets have been tweeted that match the '([']*)' search$} do |query| FakeWeb.register_uri(:get, search_url_for(query), :body => canned_response_for(query)) end module TwitterHelpers def search_url_for(query) "http://search.twitter.com/search.json?q=#{CGI.escape(query)}" end def canned_response_for(query) .... return file_path end end
  175. Given %r{no tweets have been tweeted that match the '([']*)' search$} do |query| FakeWeb.register_uri(:get, search_url_for(query), :body => canned_response_for(query)) end module TwitterHelpers def search_url_for(query) "http://search.twitter.com/search.json?q=#{CGI.escape(query)}" end def canned_response_for(query) .... return file_path end end World(TwitterHelpers)
  176. Given %r{no tweets have been tweeted that match the '([']*)' search$} do |query| FakeWeb.register_uri(:get, search_url_for(query), :body => canned_response_for(query)) end module TwitterHelpers def search_url_for(query) "http://search.twitter.com/search.json?q=#{CGI.escape(query)}" end def canned_response_for(query) .... return file_path end end World(TwitterHelpers)
  177. When the presenter goes to the 3rd slide
  178. When the presenter goes to the 3rd slide When /the presenter goes to the (d+)(?:st|nd|rd|th) slide$/ do |slide_number| presenter_browser.goto path('/') (slide_number.to_i - 1).times do presenter_browser.link(:text, "Next").click end end
  179. When the presenter goes to the 3rd slide When /the presenter goes to the (d+)(?:st|nd|rd|th) slide$/ do |slide_number| presenter_browser.goto path('/') (slide_number.to_i - 1).times do presenter_browser.link(:text, "Next").click end end Presenter has own browser, multiple sessions!
  180. And I go to the 3rd slide Then I should see "And the winner is..."
  181. And I go to the 3rd slide Then I should see "And the winner is..." When /I go to the (d+)(?:st|nd|rd|th) slide$/ do |slide_number| browser.goto path("/slides/#{slide_number}") end
  182. 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$/ do |slide_number| browser.goto path("/slides/#{slide_number}") end Then /I should see "(["]*)"$/ do |text| browser.should contain(text) end
  183. And I should see an ajax spinner
  184. And I should see an ajax spinner Then /I should see an ajax spinner$/ do browser.image(:id, 'spinner').exists?.should be_true end
  185. Brief RSpec cycle?
  186. 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
  187. 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 answer ..... @wip Scenario: winner is displayed
  188. @wip Scenario: winner is displayed Given the following presentation ... And no tweets have been tweeted that match the '#free_stuff "aaron burr"' search
  189. @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!
  190. 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 Extract to ‘Background’ 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 @wip Scenario: winner is displayed
  191. @wip Scenario: winner is displayed When the following tweets are tweeted that match the '#free_stuff "aaron burr"' search | From User | Text | Created At | | @adams | Aaron Burr shot Alexander Hamilton #free_stuff | 1 minute ago | | @jefferson | 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 see @jefferson's tweet along with his avatar
  192. When the following tweets are tweeted that match the '#free_stuff "aaron burr"' search | From User | Text | Created At | | @adams | Aaron Burr shot Alexander Hamilton #free_stuff | 1 minute ago | | @jefferson | Aaron Burr shot Alexander Hamilton #free_stuff | 2 minutes ago |
  193. When the following tweets are tweeted that match the '#free_stuff "aaron burr"' search | From User | Text | Created At | | @adams | Aaron Burr shot Alexander Hamilton #free_stuff | 1 minute ago | | @jefferson | 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| end
  194. When the following tweets are tweeted that match the '#free_stuff "aaron burr"' search | From User | Text | Created At | | @adams | Aaron Burr shot Alexander Hamilton #free_stuff | 1 minute ago | | @jefferson | Aaron Burr shot Alexander Hamilton #free_stuff | 2 minutes ago | When %r{the following tweets are tweeted that match the '([']*)' search$} do |query, tweet_table| Cucumber::AST::Table end
  195. When the following tweets are tweeted that match the '#free_stuff "aaron burr"' search | From User | Text | Created At | | @adams | Aaron Burr shot Alexander Hamilton #free_stuff | 1 minute ago | | @jefferson | Aaron Burr shot Alexander Hamilton #free_stuff | 2 minutes ago | When %r{the following tweets are tweeted that match the '([']*)' search$} do |query, tweet_table| FakeWeb.register_uri(:get, search_url_for(query), :body => canned_response_for(query)) end
  196. When the following tweets are tweeted that match the '#free_stuff "aaron burr"' search | From User | Text | Created At | | @adams | Aaron Burr shot Alexander Hamilton #free_stuff | 1 minute ago | | @jefferson | Aaron Burr shot Alexander Hamilton #free_stuff | 2 minutes ago | When %r{the following tweets are tweeted that match the '([']*)' search$} do |query, tweet_table| FakeWeb.register_uri(:get, search_url_for(query), :body => canned_response_for(query)) Umm... that won’t work. end
  197. When the following tweets are tweeted that match the '#free_stuff "aaron burr"' search | From User | Text | Created At | | @adams | Aaron Burr shot Alexander Hamilton #free_stuff | 1 minute ago | | @jefferson | Aaron Burr shot Alexander Hamilton #free_stuff | 2 minutes ago | When %r{the following tweets are tweeted that match the '([']*)' search$} 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 end twitter searches...
  198. http://github.com/bmabey/faketwitter require 'faketwitter' FakeTwitter.register_search("#cheese", {:results => [{:text => "#cheese is good"}]}) require 'twitter_search' TwitterSearch::Client.new('').query('#cheese') => [#<TwitterSearch::Tweet:0x196cef8 @id=1, @text="#cheese is good", @created_at="Fri, 21 Aug 2009 09:31:27 +0000", @to_user_id=nil, @from_user_id=1, @to_user=nil, @source="<a href="http://twitter.com/">web</a>", @iso_language_code="en", @from_user="jojo", @language="en", @profile_image_url="http:// s3.amazonaws.com/twitter_production/profile_images/1/ photo.jpg">]
  199. When the following tweets are tweeted that match the '#free_stuff "aaron burr"' search | From User | Text | Created At | | @adams | Aaron Burr shot Alexander Hamilton #free_stuff | 1 minute ago | | @jefferson | Aaron Burr shot Alexander Hamilton #free_stuff | 2 minutes ago | When %r{the following tweets are tweeted that match the '([']*)' search$} do |query, tweet_table| FakeTwitter.register_search(query, { :results => tweet_table.hashes}) end
  200. When the following tweets are tweeted that match the '#free_stuff "aaron burr"' search | From User | Text | Created At | | @adams | Aaron Burr shot Alexander Hamilton #free_stuff | 1 minute ago | | @jefferson | Aaron Burr shot Alexander Hamilton #free_stuff | 2 minutes ago | When %r{the following tweets are tweeted that match the '([']*)' search$} do |query, tweet_table| FakeTwitter.register_search(query, { :results => tweet_table.hashes}) Our headers and columns aren’t compatible with API. end
  201. When the following tweets are tweeted that match the '#free_stuff "aaron burr"' search | From User | Text | Created At | | @adams | Aaron Burr shot Alexander Hamilton #free_stuff | 1 minute ago | | @jefferson | Aaron Burr shot Alexander Hamilton #free_stuff | 2 minutes ago | When %r{the following tweets are tweeted that match the '([']*)' search$} do |query, tweet_table| tweet_table.map_headers! do |header| header.downcase.gsub(' ','_') end FakeTwitter.register_search(query, { :results => tweet_table.hashes}) end
  202. When the following tweets are tweeted that match the '#free_stuff "aaron burr"' search | From User | Text | Created At | | @adams | Aaron Burr shot Alexander Hamilton #free_stuff | 1 minute ago | | @jefferson | Aaron Burr shot Alexander Hamilton #free_stuff | 2 minutes ago | When %r{the following tweets are tweeted that match the '([']*)' search$} do |query, tweet_table| tweet_table.map_headers! do |header| header.downcase.gsub(' ','_') end tweet_table.map_column!('created_at') do |relative_time| interpret_time(relative_time) end FakeTwitter.register_search(query, { :results => tweet_table.hashes}) end
  203. @wip Scenario: winner is displayed When the following tweets are tweeted that match the '#free_stuff "aaron burr"' search | From User | Text | Created At | | @adams | Aaron Burr shot Alexander Hamilton #free_stuff | 1 minute ago | | @jefferson | 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 see @jefferson's tweet along with his avatar
  204. Then %r{I should see @([']+)'s tweet along with (?:his|her) avatar$} do |user| tweet = FakeTwitter.tweets_from(user).first browser.should contain(tweet['text'], :wait => 10) browser.should have_image(:src, tweet['profile_image_url']) end Timeout
  205. Then %r{I should see @([']+)'s tweet along with (?:his|her) avatar$} do |user| tweet = FakeTwitter.tweets_from(user).first browser.should contain(tweet['text'], :wait => 10) browser.should have_image(:src, tweet['profile_image_url']) end Spec::Matchers.define :contain do |text, options| match do |browser| options[:wait] ||= 0 browser.wait_until(options[:wait]) do browser.text.include?(text) end end end
  206. Then %r{I should see @([']+)'s tweet along with (?:his|her) avatar$} do |user| tweet = FakeTwitter.tweets_from(user).first browser.should contain(tweet['text'], :wait => 10) browser.should have_image(:src, tweet['profile_image_url']) end Spec::Matchers.define :contain do |text, options| match do |browser| options[:wait] ||= 0 browser.wait_until(options[:wait]) do browser.text.include?(text) end end end Keep trying after sleeping until it times out
  207. RSpec Cycle
  208. Scenario: winner is displayed When the following tweets are tweeted that match the '#free_stuff "aaron burr"' search | From User | Text | Created At | | @adams | Aaron Burr shot Alexander Hamilton #free_stuff | 1 minute ago | | @jefferson | Aaron Burr shot Alexander Hamilton #free_stuff | 2 minutes ago | And the presenter goes to the 3rd slide And I go to the 3rd slide Then I should see @jefferson's tweet along with his avatar
  209. Demo!
  210. More tricks...
  211. Scenario: view members list Given the following wishes exist | Wish | Family Member | | Laptop | Thomas | | Nintendo Wii | Candace | | CHEEZBURGER | FuzzBuzz | When I view the wish list for "Candace" Then I should see the following wishes | Wish | | Nintendo Wii |
  212. Given the following wishes exist | Wish | Family Member | | Laptop | Thomas | | Nintendo Wii | Candace | | CHEEZBURGER | FuzzBuzz | features/step_definitions/wish_steps.rb Given /^the following wishes exist$/ do |table| end end
  213. Given the following wishes exist | Wish | Family Member | | Laptop | Thomas | | Nintendo 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"]) end end
  214. Table Diffing http://wiki.github.com/aslakhellesoy/cucumber/multiline-step-arguments
  215. 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 | | 20 | 30 | add | 50 | | 2 | 5 | add | 7 | | 0 | 40 | add | 40 |
  216. 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 | | 20 | 30 | add | 50 | | 2 | 5 | add | 7 | Scenarios: subtraction | 0 | 40 | minus | -40 |
  217. 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 | | 20 | 30 | add | 50 | | 2 | 5 | add | 7 | | 0 | 40 | add | 40 |
  218. 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 | | 20 | 30 | add | 50 | | 2 | 5 | add | 7 | | 0 | 40 | add | 40 |
  219. 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 | | 20 | 30 | add | 50 | | 2 | 5 | add | 7 | | 0 | 40 | add | 40 |
  220. Steps Within Steps When /^I view the wish list for "(.+)"$/ do |user_name| Given "I am logged in" visit "/wishes/#{user_name}" end
  221. Steps Within Steps When /^I view the wish list for "(.+)"$/ do |user_name| Given "I am logged in" visit "/wishes/#{user_name}" end
  222. Hooks Before do end After do |scenario| end World do end World(MyModule) World(HerModule)
  223. Tagged Hooks Before('@im_special', '@me_too') do @icecream = true end @me_too Feature: Sit Feature: Lorem @im_special Scenario: Ipsum Scenario: Amet Scenario: Dolor Scenario: Consec
  224. 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 ser ver that forks.. hence Spork. :) http://github.com/timcharper/spork
  225. Drinking the Cucumber Kool-Aid?
  226. Integration tests are a scam J. B. Rainsberger http://www.jbrains.ca/permalink/239 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.
  227. Cucumber is a good hammer
  228. Cucumber is a good hammer Not everything is a nail
  229. I can skp teh unit testz?
  230. Acceptance Tests Unit Tests Application Level Object Level- Isolated! For Customers For developers Slow FAST! (should be at least) Good confidence - Tighter Feedback Loop Prevent against More about design!!!!!!!!!!!! regression Will need both gears! Some things are easier to test at the application level and vice-versa.
  231. SRSLY? Model specs, Controller Specs, and view specs!?
  232. W
  233. M
  234. More tests == More Maintenance
  235. Test Value = Design + Documentation + Defence (regression)
  236. if test.value > test.cost Suite.add(test) end
  237. KTHXBYE! BenMabey.com github.com/bmabey Twitter: bmabey IRC: mabes

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