public void MakePaymentSuccessfully() { var repo = new ItemRepository(); var itemId = "7c269f52-2236-4aa5-899e-a2e3ecadbc3f"; var cardId = "2e2ed4fb-4eb2-458e-99f9-2bf0b3004933"; var userId = "ec9bf096-c505-4bef-87f6-18822b9dbf2c"; repo.MakePayment(itemId, cardId, userId); }