Failing helper spec calling route helper

gistfile1.rb

### console output
### 1.9.3p172 :018 > app.root_path
###  => "/" 

# spec/helpers/applcation_helper.rb

require 'spec_helper'
require 'uri'

describe ApplicationHelper do
  include Rails.application.routes.url_helpers
  it "does stuff" do
    helper.go_to_page.should == '/'
  end
end

# app/helpers/application_helper.rb

module ApplicationHelper
  include Rails.application.routes.url_helpers
  def go_to_page
    root_path
  end
end

### spec output

 1) ApplicationHelper does stuff
     Failure/Error: helper.go_to_page.should == '/'
     RuntimeError:
       In order to use #url_for, you must include routing helpers explicitly. For instance, `include Rails.application.routes.url_helpers