my_webrats_steps.rb

Then /^I should( not)? see a link to (.+)(?: with text "([^\"]*)")?$/ do |do_not, page_name, text|
  url = path_to(page_name)
  selector = "a:match_href('#{url}')"

  if do_not
    response_body.should_not have_selector(selector, :handler => CustomHandler::MatchHref.new)
  else
    response_body.should have_selector(selector, :handler => CustomHandler::MatchHref.new) do |element|
      if text
        element.should contain(text)
      else
        true
      end
    end
  end
end