public void Buy_One_Can_With_Sufficient_Fund_With_Correct_Pin_Should_Return_24_Cans_Vending_Machine()
        {
            // Arrange
            _user = new User(_cashCardA, _cashCardB);

            // Act
            _cashCardA.BankAccount.Deposit(100);
            _vendingMachine.BuyCan(_cashCardA, _cashCardA.PinCode);

            // Assert
            Assert.AreEqual(24, _vendingMachine.CansInventory);
        }