public void GetChange_ReturnCoins(int sum, int nickel, int dime, int quater, int dollar, IEnumerable <Coin> coins)
{
//Arrange
_coinsAvability.CheckAvability(Coin.Nickel).Returns(nickel);
_coinsAvability.CheckAvability(Coin.Dime).Returns(dime);
_coinsAvability.CheckAvability(Coin.Quater).Returns(quater);
_coinsAvability.CheckAvability(Coin.Dollar).Returns(dollar);
//Act
_changeProvider.TryGetChange(sum, out IEnumerable <Coin> result);
//Asset
Assert.That(result, Is.EqualTo(coins));
}
public bool TryGetChange(int value, out IEnumerable <Coin> change)
{
change = new Collection <Coin>();
int dollarGiven = value / (int)Coin.Dollar;
if (dollarGiven != 0)
{
int dollarAvaliable = _coinsAvability.CheckAvability(Coin.Dollar);
if (dollarAvaliable < dollarGiven)
{
dollarGiven = dollarAvaliable;
}
value = value - dollarGiven * (int)Coin.Dollar;
}
int quaterGiven = value / (int)Coin.Quater;
if (quaterGiven != 0)
{
int quaterAvaliable = _coinsAvability.CheckAvability(Coin.Quater);
if (quaterAvaliable < quaterGiven)
{
quaterGiven = quaterAvaliable;
}
value = value - quaterGiven * (int)Coin.Quater;
}
int dimeGiven = value / (int)Coin.Dime;
if (dimeGiven != 0)
{
int dimeAvaliable = _coinsAvability.CheckAvability(Coin.Dime);
if (dimeAvaliable < dimeGiven)
{
dimeGiven = dimeAvaliable;
}
value = value - dimeGiven * (int)Coin.Dime;
}
int nickelGiven = value / (int)Coin.Nickel;
if (nickelGiven != 0)
{
int nickelAvaliable = _coinsAvability.CheckAvability(Coin.Nickel);
if (nickelAvaliable < nickelGiven)
{
nickelGiven = nickelAvaliable;
}
value = value - nickelGiven * (int)Coin.Nickel;
}
if (value != 0)
{
return(false); //not enough coins for change
}
if (dollarGiven != 0)
{
_coinsAvability.RemoveCoins(Coin.Dollar, dollarGiven);
for (var i = 0; i < dollarGiven; i++)
{
change.Add(Coin.Dollar); //czemu to nie dziala skoro change = new Collection ?
}
}
if (quaterGiven != 0)
{
_coinsAvability.RemoveCoins(Coin.Quater, quaterGiven);
for (var i = 0; i < quaterGiven; i++)
{
change.Add(Coin.Quater);
}
}
if (dimeGiven != 0)
{
_coinsAvability.RemoveCoins(Coin.Dime, dimeGiven);
for (var i = 0; i < dimeGiven; i++)
{
change.Add(Coin.Dime);
}
}
if (nickelGiven != 0)
{
_coinsAvability.RemoveCoins(Coin.Nickel, nickelGiven);
for (var i = 0; i < nickelGiven; i++)
{
change.Add(Coin.Nickel);
}
}
return(true);
}