Given I add 2 units of "The Hobbit" to my shopping basket And I add 5 units of "Breaking Bad" When I check the content of my shopping basket Then it should contain the following infomation:

• Creation date (of the shopping basket)
• 2 x The Hobbit // 2 x 5.00 = £10.00
• 5 x Breaking Bad // 5 x 7.00 = £35.00
• Total: £45.00

Acceptance criteria:

• Shopping basket should be created when the first product is added.
• Shopping basket should be persisted (In-memory, DB later)
• Each user should have her own shopping basket.

Products available (in-memory repository):

• Books
  • 10001: Lord of the Rings - £10.00
  • 10002: The Hobbit - £5.00
• DVDs
  • 20001: Game of Thrones - £9.00
  • 20110: Breaking Bad - £7.00

    public class ShoppingBasketService {
    
        public void addItem(UserID userId, ProductID productId, int quantity) { }

        public <?> basketFor(UserID userId) { }
    
    }    

• Log items added to shopping cart on the console:
  • [BASKET CREATED]: Created[<"YYYY-07-12">], User[]
  • [ITEM ADDED TO SHOPPING CART]: Added[<"YYYY-07-12">], User[], Product[], Quantity[], Price[<£12.00>]