ActionDispatch::Assertions::RoutingAssertions::WithIntegrationRouting::ClassMethods

# File actionpack/lib/action_dispatch/testing/assertions/routing.rb, line 21
          def with_routing(&block)
            old_routes = nil
            old_integration_session = nil

            setup do
              old_routes = app.routes
              old_integration_session = integration_session
              create_routes(&block)
            end

            teardown do
              reset_routes(old_routes, old_integration_session)
            end
          end