public void ShouldDispenseMostTenPoundNotes(double amountToWithdraw, double balance)
{
var rules = new DenominationPreferenceRules(new List <DenominationType> {
DenominationType.TenPound
});
AtmMoneyStore moneyStore = new AtmMoneyStore();
IWithdrawal withdrawal = new WithdrawalByPreferedDenomination(moneyStore, rules);
Cash cash = withdrawal.Withdraw(amountToWithdraw);
Assert.Equal(DenominationType.TenPound, cash.CoinOrNotes.SingleOrDefault().Type);
Assert.Equal(12, cash.CoinOrNotes.FirstOrDefault().Count);
Assert.Equal(10, cash.CoinOrNotes.FirstOrDefault().Value);
Assert.Equal(balance, moneyStore.GetBalance());
}
private static void SetupWithdrawalScheme(WithdrawalType type)
{
//TODO : this is poor man's injection. For now, since its a basic application we can live without have a container and DI logic
//to inject the scheme. Open to extension though.
switch (type)
{
case WithdrawalType.PreferredDenominationRules:
DenominationPreferenceRules rules = new DenominationPreferenceRules(new List <DenominationType> {
DenominationType.TwentyPound
});
withdrawalScheme = new WithdrawalByPreferedDenomination(moneyStore, rules);
break;
case WithdrawalType.LeastNumberOfItems:
withdrawalScheme = new WithdrawalByLeastNumberOfItems(moneyStore);
break;
default: throw new Exception("This schema is not supported yet");
}
}
public void ShouldDispenseMostTwentyPoundNotes(double amountToWithdraw, double balance, params object[] denominations)
{
var rules = new DenominationPreferenceRules(new List <DenominationType> {
DenominationType.TwentyPound
});
AtmMoneyStore moneyStore = new AtmMoneyStore();
IWithdrawal withdrawal = new WithdrawalByPreferedDenomination(moneyStore, rules);
Cash cash = withdrawal.Withdraw(amountToWithdraw);
Assert.Equal(denominations.Length / 2, cash.CoinOrNotes.Count);
for (int i = 0; i < denominations.Length; i++)
{
if (i % 2 == 0)
{
var type = (DenominationType)denominations[i];
var count = (int)denominations[i + 1];
Assert.Equal(count, cash.CoinOrNotes.Find(c => c.Type == type)?.Count);
}
}
Assert.Equal(balance, moneyStore.GetBalance());
}
