# File actionpack/lib/action_dispatch/testing/assertions/routing.rb, line 22
def with_routing(&block)
  old_routes = nil
  old_routes_call_method = nil
  old_integration_session = nil

  setup do
    old_routes = initialize_lazy_routes(app.routes)
    old_routes_call_method = old_routes.method(:call)
    old_integration_session = integration_session
    create_routes(&block)
  end

  teardown do
    reset_routes(old_routes, old_routes_call_method, old_integration_session)
  end
end