Capybara rack-test response status code checking

controller_spec.rb

    describe "when some redirect mappings are present in the Medify::PAGE_REDIRECTS hash" do
      before(:each) do
        Medify::PAGE_REDIRECTS['/abstract-reasoning-subtest-advice-by-medify'] = '/advice-pages/abstract-reasoning-subtest-advice-by-medify'
        Medify::PAGE_REDIRECTS['/decision-analysis-subtest-advice-by-medify']  = '/advice-pages/decision-analysis-subtest-advice-by-medify'
      end

      describe "GET :show, :path => abstract-reasoning-subtest-advice-by-medify" do
        subject {get :show, :path => 'abstract-reasoning-subtest-advice-by-medify'}
        it {should be_redirect}
        it {should redirect_to('/advice-pages/abstract-reasoning-subtest-advice-by-medify')}
        it "should redirect with status 301 Moved Permanently" do
          subject
          assert_response :moved_permanently
        end
      end
  
      describe "GET :show, :path => decision-analysis-subtest-advice-by-medify" do
        subject {get :show, :path => 'decision-analysis-subtest-advice-by-medify'}
        it {should be_redirect}
        it {should redirect_to('/advice-pages/decision-analysis-subtest-advice-by-medify')}
        it "should redirect with status 301 Moved Permanently" do
          subject
          assert_response :moved_permanently
        end
      end
    end

redirect_test_steps.rb

        When /^I use the "([^"]*)" I should be redirected to "([^"]*)" with status code (\d+)$/ do |old_url, redirect_url, status_code|
          current_driver = Capybara.current_session.driver
          raise "untested driver, step probably wont work" unless current_driver.is_a? Capybara::Driver::RackTest
          response = current_driver.get old_url
          URI.parse(response.location).path.should == redirect_url
          response.status.should == status_code.to_i
        end