tdd-routing-error

# routing
Rails.application.routes.draw do
  namespace :api, defaults: { format: :json } do
    resources :markets, only: [:index] do
      resources :languages, param: :key, only: [:index, :show] do
        resources :labels, params: :item, only: [:show, :update] do
          resource :translations , only:[:update] do
            post 'validate' => 'translations#validate'
          end
        end
      end
    end
  end
end

# I have a translation_controller in app/controller/api/translations_controller.rb
# I'm trying to write a functional test to this route  /api/markets/:market_id/languages/:language_key/labels/:label_id/translations

describe Api::TranslationsController, type: :controller do
  context '#update' do
    context "when the translation isn't found" do
      it 'returns an error' do
        # TRY to sends a put to  /api/markets/:market_id/languages/:language_key/labels/:label_id/translations
        put :update, {:market_id => 1}
      end
    end

    context 'when the translation is found' do
      context 'when the value is valid' do

      end
      
      context "when the value isn't valid" do

      end
    end
  end
end

When I run I get this error:
Failures:
1) Api::TranslationsController#update when the translation isn't found returns an error
Failure/Error: put :update, {:market_id => 1, :language_key => 'en', :label_id => '648'}, {},  format: :json
ActionController::UrlGenerationError:
No route matches {:action=>"update", :controller=>"api/translations", :label_id=>"648", :language_key=>"en", :market_id=>"1"}