private static AtmClient Refill(int initQty)
{
var cash = Banknotes.Select(b => (b, initQty)).ToArray();
var atm = new AtmClient().Refill(cash);
return(atm);
}
public void CanWithdrawAll(int initQty)
{
if (Acceptable(initQty))
{
AtmClient atm = Refill(initQty);
atm.Withdraw(atm.AvailableAmount()).AvailableAmount().Should().Be(0);
}
}
public void CanRefill(int initQty)
{
if (Acceptable(initQty))
{
AtmClient atm = Refill(initQty);
// Amount should be valid after refill
atm.AvailableAmount().Should().Be(Total(initQty));
// Banknotes should match what has been refilled
atm.AvailableBanknotes().OrderBy(b => b).Should().Equal(Banknotes.OrderBy(b => b));
}
}
public void CanWithdraw(int initQty, int withdrawQty)
{
if (Acceptable(initQty) && withdrawQty > 0 && withdrawQty < 20)
{
AtmClient atm = Refill(initQty);
if (withdrawQty > initQty)
{
var initial = atm.AvailableAmount();
atm.Withdraw(Total(withdrawQty)).AvailableAmount().Should().Be(initial);
}
else
{
var initial = atm.AvailableAmount();
var withdrawn = Total(withdrawQty);
atm.Withdraw(withdrawn).AvailableAmount().Should().Be(initial - withdrawn);
}
}
}