How to test with RSpec a Rails plugin using “link_to” and “current_page?”

def menu(options = {}, &block)
  carte = my_menu.new(self)
  yield carte
  carte.to_s unless carte.empty?
end

class my_menu
  include ActionView::Helpers::TagHelper
  include ActionView::Helpers::UrlHelper

  def initialize(base)
    @base = base
  end

  def link
    @base.link_to(name, url_options, html_options)
    @base.current_page?(url_options)
  end
end

included ActionView::Helpers::UrlHelper