added rspec-rails for view method specs

spec/rspec-rails/helper_example_group.rb

@@ -0,0 +1,164 @@
+module Spec
+  module Rails
+    module Example
+      # Helper Specs live in $RAILS_ROOT/spec/helpers/.
+      #
+      # Helper Specs use Spec::Rails::Example::HelperExampleGroup, which allows you to
+      # include your Helper directly in the context and write specs directly
+      # against its methods.
+      #
+      # HelperExampleGroup also includes the standard lot of ActionView::Helpers in case your
+      # helpers rely on any of those.
+      #
+      # == Example
+      #
+      #   class ThingHelper
+      #     def number_of_things
+      #       Thing.count
+      #     end
+      #   end
+      #
+      #   describe "ThingHelper example_group" do
+      #     include ThingHelper
+      #     it "should tell you the number of things" do
+      #       Thing.should_receive(:count).and_return(37)
+      #       number_of_things.should == 37
+      #     end
+      #   end
+      class HelperExampleGroup < FunctionalExampleGroup
+        class HelperObject < ActionView::Base
+          def protect_against_forgery?
+            false
+          end
+          
+          def session=(session)
+            @session = session
+          end
+          
+          def request=(request)
+            @request = request
+          end
+          
+          def flash=(flash)
+            @flash = flash
+          end
+          
+          def params=(params)
+            @params = params
+          end
+          
+          def controller=(controller)
+            @controller = controller
+          end
+          
+          private
+            attr_reader :session, :request, :flash, :params, :controller
+        end
+        
+        class << self
+          # The helper name....
+          def helper_name(name=nil)
+            @helper_being_described = "#{name}_helper".camelize.constantize
+            send :include, @helper_being_described
+          end
+          
+          def helper
+            @helper_object ||= returning HelperObject.new do |helper_object|
+              if @helper_being_described.nil?
+                if described_type.class == Module
+                  helper_object.extend described_type
+                end
+              else
+                helper_object.extend @helper_being_described
+              end
+            end
+          end
+        end
+        
+        # Returns an instance of ActionView::Base with the helper being spec'd
+        # included.
+        #
+        # == Example
+        #
+        #   describe PersonHelper do
+        #     it "should write a link to person with the name" do
+        #       assigns[:person] = mock_model(Person, :full_name => "Full Name", :id => 37, :new_record? => false)
+        #       helper.link_to_person.should == %{<a href="/people/37">Full Name</a>}
+        #     end
+        #   end
+        #
+        #   module PersonHelper
+        #     def link_to_person
+        #       link_to person.full_name, url_for(person)
+        #     end
+        #   end
+        #
+        def helper
+          self.class.helper
+        end
+
+        # Reverse the load order so that custom helpers which are defined last
+        # are also loaded last.
+        ActionView::Base.included_modules.reverse.each do |mod|
+          include mod if mod.parents.include?(ActionView::Helpers)
+        end
+
+        before(:all) do
+          @controller_class_name = 'Spec::Rails::Example::HelperExampleGroupController'
+        end
+
+        before(:each) do
+          @controller.request = @request
+          @controller.url = ActionController::UrlRewriter.new @request, {} # url_for
+
+          @flash = ActionController::Flash::FlashHash.new
+          session['flash'] = @flash
+
+          ActionView::Helpers::AssetTagHelper::reset_javascript_include_default
+          
+          helper.session = session
+          helper.request = @request
+          helper.flash = flash
+          helper.params = params
+          helper.controller = @controller
+        end
+
+        def flash
+          @flash
+        end
+
+        def eval_erb(text)
+          erb_args = [text]
+          if helper.respond_to?(:output_buffer)
+            erb_args += [nil, nil, '@output_buffer']
+          end
+          
+          helper.instance_eval do
+            ERB.new(*erb_args).result(binding)
+          end
+        end
+
+        # TODO: BT - Helper Examples should proxy method_missing to a Rails View instance.
+        # When that is done, remove this method
+        def protect_against_forgery?
+          false
+        end
+
+        Spec::Example::ExampleGroupFactory.register(:helper, self)
+
+        protected
+        def _assigns_hash_proxy
+          @_assigns_hash_proxy ||= AssignsHashProxy.new helper
+        end
+
+      end
+
+      class HelperExampleGroupController < ApplicationController #:nodoc:
+        attr_accessor :request, :url
+
+        # Re-raise errors
+        def rescue_action(e); raise e; end
+      end
+    end
+  end
+end