Feature: engine routes for controllers

  Controller specs can specify the routeset that will be used for the example
  group. This is most useful when testing Rails engines.

  @unsupported-on-rails-3-0
  Scenario: specify engine route
    Given a file named "spec/controllers/widgets_controller_spec.rb" with:
    """ruby
    require "spec_helper"

    # A very simple Rails engine
    module MyEngine
      class Engine < ::Rails::Engine
        isolate_namespace MyEngine
      end

      Engine.routes.draw do
        resources :widgets, :only => [:show] do
          get :random, :on => :collection
        end
      end

      class WidgetsController < ::ActionController::Base
        def random
          @random_widget = Widget.all.shuffle.first
          redirect_to widget_path(@random_widget)
        end

        def show
          @widget = Widget.find(params[:id])
          render :text => @widget.name
        end
      end
    end

    describe MyEngine::WidgetsController do
      routes { MyEngine::Engine.routes }

      it "redirects to a random widget" do
        widget1 = Widget.create!(:name => "Widget 1")
        widget2 = Widget.create!(:name => "Widget 2")

        get :random
        expect(response).to be_redirect
        expect(response).to redirect_to(assigns(:random_widget))
      end
    end
    """
    When I run `rspec spec`
    Then the examples should all pass
