steak_helpers_1.rb

require "spec/acceptance/acceptance_helper"

feature "Login", %q{
  In order to access my account
  As an user
  I want to be able to log in
} do

  let :user do
    Factory :user
  end

  let :invalid_user do
    mock 'User', :login => "jonhdoe"
  end

  Scenario "Invalid user" do
    log_in_with invalid_user
    should_have_error "Fail to login as jonhdoe."
  end

  scenario "Logout" do
    log_in_with user
    click "logout"
    should_have_notice "Loged out with success."
    should_be_on home_page
  end
end

steak_helpers_2.rb

module HelperMethods
  def log_in_with(user)
    visit "/"
    fill_in "user",     :with => user.login
    fill_in "passowrd", :with => "123456"
    click "login"
  end

  [:notice, :error].each do |name|
    define_method "should_have_#{name}" do |message|
      page.should have_css(".message.#{name}", :text => message)
    end
  end

  def should_be_on(path)
    page.current_url.should match(Regexp.new(path))
  end

  def should_not_be_on(path)
    page.current_url.should_not match(Regexp.new(path))
  end
end

steak_helpers_3.rb

  ## HELPER

  def should_have_errors(*messages)
    within(:css, "#errorExplanation") do
      messages.each { |msg| page.should have_content(msg) }
    end
  end
  alias_method :should_have_error, :should_have_errors

  ## USAGE

  scenario "Invalid post" do
    click   "Create"
    should_have_errors(
      "body can't be blank",
      "category can't be blank",
      "publish date can't be blank"
    )
  end

  ## HELPER

  def fill_the_following(fields={})
    fields.each do |field, value|
      fill_in field,  :with => value
    end
  end

  ## USAGE

  scenario "Valid Post" do
    fill_the_following(
      "Post"          => "Steak is awesome",
      "Publish date"  => "31/10/2010",
      "Excerpt"       => "Bla bla bla ...",
      "Body"          => "Bla bla bla ..."
    )

    click "Create"
    should_have_notice "Post was successfully created."
  end

  ## HELPER

  def should_have_the_following(*contents)
    contents.each do |content|
      page.should have_content(content)
    end
  end

  ## USAGE

  scenario "Post with tags" do
    post = Factory :post
    visit post_path(post)

    within(".tags") do
      should_have_the_following(
        'steak',
        'acceptance',
        'rails',
        'ruby'
      )
    end
  end

  ## HELPER

  def should_have_table(table_name, *rows)
    within(table_name) do
      rows.each do |columns|
        columns.each { |content| page.should have_content(content) }
      end
    end
  end

  ## USAGE

  scenario "List posts" do
    visit posts_path

    should_have_table "#posts_grid",
      [ "Intro to RSpec", "Super awesome post about rspec..."     ],
      [ "Rails 3.0",      "Last week Rails 3.0RC was released..." ]
  end