protected override decimal GetPayAdjustment(TaxCode taxCode, PayPeriods periods /*, int period*/)
{
if (taxCode.IsNoAdjustmentCode || !taxCode.TaxCodeNumber.HasValue || taxCode.TaxCodeNumber.Value == 0)
{
return(0);
}
var codeNumber = taxCode.TaxCodeNumber.Value;
var remainder = ((codeNumber - 1m) % 500) + 1m;
var quotient = Math.Floor(codeNumber - remainder) / 500m;
var payPeriodForQuotient = (periods == PayPeriods.Monthly ? PayPeriods.Monthly : PayPeriods.Weekly);
var quotientMult = TaxMath.UpRound(500 * (10 / (decimal)payPeriodForQuotient), 2);
remainder = ((remainder * 10) + 9) / (int)payPeriodForQuotient;
remainder = Math.Ceiling(remainder * 100) / 100;
//remainder *= Math.Round((decimal)payPeriodForQuotient / (decimal)periods);
quotient = quotient * quotientMult;
var adjustment = (quotient + remainder);// * period;
adjustment *= Math.Round((decimal)payPeriodForQuotient / (decimal)periods);
if (taxCode.IsPrefixCode)
{
adjustment *= -1;
}
return(adjustment);
}
public void UpRoundingTest()
{
Assert.AreEqual(1m, TaxMath.UpRound(0.99999m, 2));
Assert.AreEqual(1.96m, TaxMath.UpRound(1.956m, 2));
Assert.AreEqual(2.96m, TaxMath.UpRound(2.9555555m, 2));
Assert.AreEqual(2.48m, TaxMath.UpRound(2.4719m, 2));
Assert.AreEqual(978.55m, TaxMath.UpRound(978.54823m, 2));
Assert.AreEqual(8956.55m, TaxMath.UpRound(8956.54168m, 2));
Assert.AreEqual(654.17m, TaxMath.UpRound(654.168749m, 2));
Assert.AreEqual(236514.47m, TaxMath.UpRound(236514.46984m, 2));
Assert.AreEqual(784.47m, TaxMath.UpRound(784.4687m, 2));
}
