product = {
    "id": 42,
    "name": "Test Product",
    "price": 9.99,
    "stock": 100,
    "category": "Test Category"
}

order_item = {
    "product_id": 42,
    "product_name": "Test Product",
    "unit_price": 9.99,
    "quantity": 2
}

"""
GET user-service OK
GET catalog-service OK stock= 5
PUT catalog-service #décrémente le stock

"""