Failing helper spec calling route helper

gistfile1.txt

# app/helpers/application_helper.rb

module ApplicationHelper
  def go_to_page(resource)
    polymorphic_path([resource.company, resource])
  end
end

# spec/helpers/application_helper_spec.rb

require 'spec_helper'
require 'uri'


describe ApplicationHelper do
  it "builds a non-secure page url" do
    # make new product with valid associated company
    res = Product.make!
    uri = helper.go_to_page(res)
    uri.scheme.should == 'http'
  end
end

# error

1) ApplicationHelper builds a non-secure page url
     Failure/Error: uri = helper.go_to_page(res)
     NoMethodError:
       undefined method `company_product_path' for #<#<Class:0x007fddac62ac78>:0x007fddb0acd470>

## notes:
# company_product_path exists in routes and the view that uses this helper works as expected