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); }