"The requested qty is not available" should be received instead of Internal server error

[TomashKhamlai]

Preconditions (*)

1. Add configurable product to Cart #224 or Add virtual products to cart #320 is merged or [Cart Operations] Add configurable product to Cart #142 is fixed
2. Default mode or

php bin/magento deploy:mode:set default
rm -rf generated/* var/*

Steps to reproduce (*)

1. Create Configurable Product with
   Name & SKU: conf
   Weight: 1
   Price: 1
   Variations:

• sku: conf-white, qty: 12, price: 10
• sku: conf-black, qty: 12, price: 10

2. Perform GraphQL query:

mutation {
  addConfigurableProductsToCart(
    input: {
      cart_id: "gbK3g1pcEiyd39h2clKomLU6qsyFLAVT"
      cartItems: [
        {
          variant_sku: "conf-black"
          data: {
            qty: 13
            sku: "conf-black"
          }
        }
        {
          variant_sku: "conf-white"
          data: {
            qty: 13
            sku: "conf-white"
          }
        }
      ]
    }
  ) {
    cart {
      items {
        id
        qty
        product {
          name
          sku
        }
      }
    }
  }
}

  

Expected result (*)

1. "message": "The requested qty is not available",

Actual result (*)

1. "message": "Internal server error",

[naydav]

#368