Bundle needed gems for BDD

* rspec
* cucumber
* capybara
* database_cleaner

features/support/env.rb

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+# IMPORTANT: This file is generated by cucumber-rails - edit at your own peril.
+# It is recommended to regenerate this file in the future when you upgrade to a 
+# newer version of cucumber-rails. Consider adding your own code to a new file 
+# instead of editing this one. Cucumber will automatically load all features/**/*.rb
+# files.
+
+require 'cucumber/rails'
+
+# Capybara defaults to XPath selectors rather than Webrat's default of CSS3. In
+# order to ease the transition to Capybara we set the default here. If you'd
+# prefer to use XPath just remove this line and adjust any selectors in your
+# steps to use the XPath syntax.
+Capybara.default_selector = :css
+
+# By default, any exception happening in your Rails application will bubble up
+# to Cucumber so that your scenario will fail. This is a different from how 
+# your application behaves in the production environment, where an error page will 
+# be rendered instead.
+#
+# Sometimes we want to override this default behaviour and allow Rails to rescue
+# exceptions and display an error page (just like when the app is running in production).
+# Typical scenarios where you want to do this is when you test your error pages.
+# There are two ways to allow Rails to rescue exceptions:
+#
+# 1) Tag your scenario (or feature) with @allow-rescue
+#
+# 2) Set the value below to true. Beware that doing this globally is not
+# recommended as it will mask a lot of errors for you!
+#
+ActionController::Base.allow_rescue = false
+
+# Remove/comment out the lines below if your app doesn't have a database.
+# For some databases (like MongoDB and CouchDB) you may need to use :truncation instead.
+begin
+  DatabaseCleaner.strategy = :transaction
+rescue NameError
+  raise "You need to add database_cleaner to your Gemfile (in the :test group) if you wish to use it."
+end
+
+# You may also want to configure DatabaseCleaner to use different strategies for certain features and scenarios.
+# See the DatabaseCleaner documentation for details. Example:
+#
+#   Before('@no-txn,@selenium,@culerity,@celerity,@javascript') do
+#     DatabaseCleaner.strategy = :truncation, {:except => %w[widgets]}
+#   end
+#
+#   Before('~@no-txn', '~@selenium', '~@culerity', '~@celerity', '~@javascript') do
+#     DatabaseCleaner.strategy = :transaction
+#   end
+#

features/support/paths.rb

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

features/support/selectors.rb

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+module HtmlSelectorsHelpers
+  # Maps a name to a selector. Used primarily by the
+  #
+  #   When /^(.+) within (.+)$/ do |step, scope|
+  #
+  # step definitions in web_steps.rb
+  #
+  def selector_for(locator)
+    case locator
+
+    when "the page"
+      "html > body"
+
+    # Add more mappings here.
+    # Here is an example that pulls values out of the Regexp:
+    #
+    #  when /^the (notice|error|info) flash$/
+    #    ".flash.#{$1}"
+
+    # You can also return an array to use a different selector
+    # type, like:
+    #
+    #  when /the header/
+    #    [:xpath, "//header"]
+
+    # This allows you to provide a quoted selector as the scope
+    # for "within" steps as was previously the default for the
+    # web steps:
+    when /^"(.+)"$/
+      $1
+
+    else
+      raise "Can't find mapping from \"#{locator}\" to a selector.\n" +
+        "Now, go and add a mapping in #{__FILE__}"
+    end
+  end
+end
+
+World(HtmlSelectorsHelpers)