public async Task <Draw> DrawWinsAsync(Draw draw)
{
DetermineDrawCanBeDrawn(draw);
IEnumerable <Ballot> soldBallots = draw.GetSoldBallots();
int randomIndex = await GenerateRandomNumberAsync(0, soldBallots.Count() - 1);
Ballot pickedBallot = soldBallots.ElementAt(randomIndex);
Price mainPrice = draw.GetMainPrice();
pickedBallot.WonPrice = mainPrice;
Price finalDigitPrice = draw.GetFinalDigitPrice();
IEnumerable <Ballot> finalDigitsBallots = draw.GetSoldBallots(pickedBallot.GetLastDigit());
foreach (var wonBallot in finalDigitsBallots)
{
if (wonBallot.Number != pickedBallot.Number)
{
wonBallot.WonPrice = finalDigitPrice;
}
}
draw.RegisterAsDrawn();
return(draw);
}
public void GetLastDigit_ReturnsLastDigitOfNumber()
{
// Arrange
var ballot = new Ballot
{
Number = 1234,
};
// Act
var result = ballot.GetLastDigit();
// Assert
result.Should().Be(4);
}