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Jon Yurek
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Use Capybara to drive a generated Rails app through integration tests.
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‎.gitignore

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@@ -4,3 +4,4 @@ tmp
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test/s3.yml
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public
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paperclip*.gem
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capybara*.html

‎features/rails.feature

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Feature: Running paperclip in a Rails app
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Scenario: Basic utilization
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Given I generate a rails application
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And I have a "users" resource with "name:string"
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And I run "script/generate paperclip user avatar"
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And I save the following as "app/models/user.rb"
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"""
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class User < ActiveRecord::Base
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has_attached_file :avatar
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end
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"""
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And I save the following as "app/views/users/new.html.erb"
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"""
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<% form_for @user, :html => { :multipart => true } do |f| %>
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<%= f.text_field :name %>
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<%= f.file_field :avatar %>
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<%= submit_tag "Submit" %>
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<% end %>
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"""
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And I save the following as "app/views/users/show.html.erb"
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"""
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<p>Name: <%= @user.name %></p>
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<p>Avatar: <%= image_tag @user.avatar.url %></p>
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"""
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And this plugin is available
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And the rails application is prepped and running
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When I visit /users/new
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And I fill in "user_name" with "something"
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And I attach the file "test/fixtures/5k.png" to "user_avatar"
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And I press "Submit"
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Then I should see "Name: something"
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And I save and open the page

‎features/step_definitions/rails_steps.rb

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Given %r{I generate a rails application} do
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FileUtils.rm_rf TEMP_ROOT
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FileUtils.mkdir_p TEMP_ROOT
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Dir.chdir(TEMP_ROOT) do
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`rails _2.3.8_ #{APP_NAME}`
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end
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ENV['RAILS_ENV'] = 'test'
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end
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When %r{I save the following as "([^"]*)"} do |path, string|
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FileUtils.mkdir_p(File.join(CUC_RAILS_ROOT, File.dirname(path)))
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File.open(File.join(CUC_RAILS_ROOT, path), 'w') { |file| file.write(string) }
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end
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When %r{the rails application is prepped and running$} do
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When "the rails application is prepped"
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When "the rails application is running"
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end
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When %r{the rails application is prepped$} do
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When %{I run "rake db:create db:migrate"}
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end
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When %r{the rails application is running} do
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Dir.chdir(CUC_RAILS_ROOT) do
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require "config/environment"
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Capybara.app = ActionController::Dispatcher.new
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end
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end
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When %r{this plugin is available} do
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$LOAD_PATH << "#{PROJECT_ROOT}/lib"
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require 'paperclip'
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When %{I save the following as "vendor/plugins/paperclip/rails/init.rb"},
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IO.read("#{PROJECT_ROOT}/rails/init.rb")
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end
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When %r{I run "([^"]*)"} do |command|
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Dir.chdir(CUC_RAILS_ROOT) do
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`#{command}`
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end
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end
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When %r{I have a "([^"]*)" resource with "([^"]*)"} do |resource, fields|
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When %{I run "script/generate scaffold #{resource} #{fields}"}
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end

‎features/step_definitions/web_steps.rb

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# IMPORTANT: This file is generated by cucumber-rails - edit at your own peril.
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# It is recommended to regenerate this file in the future when you upgrade to a
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# newer version of cucumber-rails. Consider adding your own code to a new file
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# instead of editing this one. Cucumber will automatically load all features/**/*.rb
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# files.
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require 'uri'
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require 'cgi'
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require File.expand_path(File.join(File.dirname(__FILE__), "..", "support", "paths"))
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module WithinHelpers
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def with_scope(locator)
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locator ? within(locator) { yield } : yield
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end
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end
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World(WithinHelpers)
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Given /^(?:|I )am on (.+)$/ do |page_name|
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visit path_to(page_name)
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end
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When /^(?:|I )go to (.+)$/ do |page_name|
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visit path_to(page_name)
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end
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When /^(?:|I )visit (\/.+)$/ do |page_path|
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visit page_path
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end
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When /^(?:|I )press "([^"]*)"(?: within "([^"]*)")?$/ do |button, selector|
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with_scope(selector) do
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click_button(button)
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end
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end
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When /^(?:|I )follow "([^"]*)"(?: within "([^"]*)")?$/ do |link, selector|
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with_scope(selector) do
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click_link(link)
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end
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end
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When /^(?:|I )fill in "([^"]*)" with "([^"]*)"(?: within "([^"]*)")?$/ do |field, value, selector|
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with_scope(selector) do
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fill_in(field, :with => value)
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end
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end
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When /^(?:|I )fill in "([^"]*)" for "([^"]*)"(?: within "([^"]*)")?$/ do |value, field, selector|
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with_scope(selector) do
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fill_in(field, :with => value)
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end
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end
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# Use this to fill in an entire form with data from a table. Example:
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#
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# When I fill in the following:
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# | Account Number | 5002 |
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# | Expiry date | 2009-11-01 |
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# | Note | Nice guy |
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# | Wants Email? | |
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#
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# TODO: Add support for checkbox, select og option
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# based on naming conventions.
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#
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When /^(?:|I )fill in the following(?: within "([^"]*)")?:$/ do |selector, fields|
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with_scope(selector) do
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fields.rows_hash.each do |name, value|
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When %{I fill in "#{name}" with "#{value}"}
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end
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end
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end
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When /^(?:|I )select "([^"]*)" from "([^"]*)"(?: within "([^"]*)")?$/ do |value, field, selector|
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with_scope(selector) do
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select(value, :from => field)
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end
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end
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When /^(?:|I )check "([^"]*)"(?: within "([^"]*)")?$/ do |field, selector|
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with_scope(selector) do
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check(field)
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end
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end
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When /^(?:|I )uncheck "([^"]*)"(?: within "([^"]*)")?$/ do |field, selector|
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with_scope(selector) do
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uncheck(field)
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end
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end
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When /^(?:|I )choose "([^"]*)"(?: within "([^"]*)")?$/ do |field, selector|
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with_scope(selector) do
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choose(field)
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end
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end
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When /^(?:|I )attach the file "([^"]*)" to "([^"]*)"(?: within "([^"]*)")?$/ do |path, field, selector|
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with_scope(selector) do
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attach_file(field, path)
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end
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end
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Then /^(?:|I )should see JSON:$/ do |expected_json|
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require 'json'
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expected = JSON.pretty_generate(JSON.parse(expected_json))
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actual = JSON.pretty_generate(JSON.parse(response.body))
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expected.should == actual
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end
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Then /^(?:|I )should see "([^"]*)"(?: within "([^"]*)")?$/ do |text, selector|
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with_scope(selector) do
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if page.respond_to? :should
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page.should have_content(text)
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else
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assert page.has_content?(text)
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end
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end
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end
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Then /^(?:|I )should see \/([^\/]*)\/(?: within "([^"]*)")?$/ do |regexp, selector|
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regexp = Regexp.new(regexp)
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with_scope(selector) do
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if page.respond_to? :should
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page.should have_xpath('//*', :text => regexp)
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else
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assert page.has_xpath?('//*', :text => regexp)
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end
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end
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end
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Then /^(?:|I )should not see "([^"]*)"(?: within "([^"]*)")?$/ do |text, selector|
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with_scope(selector) do
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if page.respond_to? :should
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page.should have_no_content(text)
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else
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assert page.has_no_content?(text)
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end
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end
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end
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Then /^(?:|I )should not see \/([^\/]*)\/(?: within "([^"]*)")?$/ do |regexp, selector|
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regexp = Regexp.new(regexp)
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with_scope(selector) do
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if page.respond_to? :should
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page.should have_no_xpath('//*', :text => regexp)
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else
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assert page.has_no_xpath?('//*', :text => regexp)
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end
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end
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end
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Then /^the "([^"]*)" field(?: within "([^"]*)")? should contain "([^"]*)"$/ do |field, selector, value|
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with_scope(selector) do
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field = find_field(field)
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field_value = (field.tag_name == 'textarea') ? field.text : field.value
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if field_value.respond_to? :should
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field_value.should =~ /#{value}/
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else
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assert_match(/#{value}/, field_value)
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end
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end
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end
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Then /^the "([^"]*)" field(?: within "([^"]*)")? should not contain "([^"]*)"$/ do |field, selector, value|
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with_scope(selector) do
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field = find_field(field)
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field_value = (field.tag_name == 'textarea') ? field.text : field.value
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if field_value.respond_to? :should_not
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field_value.should_not =~ /#{value}/
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else
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assert_no_match(/#{value}/, field_value)
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end
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end
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end
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Then /^the "([^"]*)" checkbox(?: within "([^"]*)")? should be checked$/ do |label, selector|
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with_scope(selector) do
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field_checked = find_field(label)['checked']
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if field_checked.respond_to? :should
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field_checked.should be_true
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else
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assert field_checked
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end
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end
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end
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Then /^the "([^"]*)" checkbox(?: within "([^"]*)")? should not be checked$/ do |label, selector|
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with_scope(selector) do
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field_checked = find_field(label)['checked']
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if field_checked.respond_to? :should
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field_checked.should be_false
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else
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assert !field_checked
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end
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end
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end
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Then /^(?:|I )should be on (.+)$/ do |page_name|
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current_path = URI.parse(current_url).path
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if current_path.respond_to? :should
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current_path.should == path_to(page_name)
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else
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assert_equal path_to(page_name), current_path
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end
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end
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Then /^(?:|I )should have the following query string:$/ do |expected_pairs|
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query = URI.parse(current_url).query
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actual_params = query ? CGI.parse(query) : {}
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expected_params = {}
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expected_pairs.rows_hash.each_pair{|k,v| expected_params[k] = v.split(',')}
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if actual_params.respond_to? :should
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actual_params.should == expected_params
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else
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assert_equal expected_params, actual_params
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end
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end
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Then /^I save and open the page$/ do
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save_and_open_page
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end
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Then /^show me the page$/ do
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save_and_open_page
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end

‎features/support/env.rb

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require 'capybara/cucumber'
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require 'test/unit/assertions'
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World(Test::Unit::Assertions)

‎features/support/paths.rb

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module NavigationHelpers
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# Maps a name to a path. Used by the
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#
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# When /^I go to (.+)$/ do |page_name|
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#
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# step definition in web_steps.rb
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#
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def path_to(page_name)
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case page_name
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when /the new user page/
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'/users/new'
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when /the home\s?page/
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'/'
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# Add more mappings here.
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# Here is an example that pulls values out of the Regexp:
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#
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# when /^(.*)'s profile page$/i
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# user_profile_path(User.find_by_login($1))
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else
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begin
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page_name =~ /the (.*) page/
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path_components = $1.split(/\s+/)
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self.send(path_components.push('path').join('_').to_sym)
27+
rescue Object => e
28+
raise "Can't find mapping from \"#{page_name}\" to a path.\n" +
29+
"Now, go and add a mapping in #{__FILE__}"
30+
end
31+
end
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end
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end
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World(NavigationHelpers)

‎features/support/rails.rb

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PROJECT_ROOT = File.expand_path(File.join(File.dirname(__FILE__), '..', '..')).freeze
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TEMP_ROOT = File.join(PROJECT_ROOT, 'tmp').freeze
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APP_NAME = 'testapp'.freeze
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CUC_RAILS_ROOT = File.join(TEMP_ROOT, APP_NAME).freeze
5+
6+
Before do
7+
FileUtils.rm_rf(TEMP_ROOT)
8+
FileUtils.mkdir_p(CUC_RAILS_ROOT)
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Dir.chdir(PROJECT_ROOT)
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end

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