addProductToOrder example

    public function recalculateOrder(string $orderId, Context $context): Response
    {
        $this->recalculationService->recalculateOrder($orderId, $context);

        return new Response(null, Response::HTTP_NO_CONTENT);
    }

    #[Route(path: '/api/_action/order/{orderId}/product/{productId}', name: 'api.action.order.add-product', methods: ['POST'])]     public function addProductToOrder(string $orderId, string $productId, Request $request, Context $context): Response
    {
        $quantity = $request->request->getInt('quantity', 1);
        $this->recalculationService->addProductToOrder($orderId, $productId, $quantity, $context);

        return new Response(null, Response::HTTP_NO_CONTENT);
    }

    #[Route(path: '/api/_action/order/{orderId}/creditItem', name: 'api.action.order.add-credit-item', methods: ['POST'])]     public function addCreditItemToOrder(string $orderId, Request $request, Context $context): Response
    {
        $identifier = (string) $request->request->get('identifier');
        $type = LineItem::CREDIT_LINE_ITEM_TYPE;
        $quantity = $request->request->getInt('quantity', 1);

        

$entityRepository,
            $this->orderConverter,
            $this->createMock(CartService::class),
            $productRepository,
            $entityRepository,
            $entityRepository,
            $this->createMock(Processor::class),
            $this->cartRuleLoader,
            $this->createMock(PromotionItemBuilder::class)
        );

        $recalculationService->addProductToOrder($order->getId(), $productEntity->getId(), 1, $this->context);
    }

    public function testAddCustomLineItem(): void
    {
        $lineItem = new LineItem(Uuid::randomHex(), LineItem::CUSTOM_LINE_ITEM_TYPE);

        $order = $this->orderEntity();
        $cart = $this->getCart();
        $cart->add($lineItem);

        $entityRepository = $this->createMock(EntityRepository::class);