public Task <decimal> CalculateTaxAsync(Item item, int count) { var subtotal = item.Price * count; decimal tax = 0; if (!item.IsExemptFromBasicSalesTax) { tax += RoundHelper.RoundToNearest(subtotal * this.salesTax, TaxRoundsUpTo); } if (item.IsImported) { tax += RoundHelper.RoundToNearest(subtotal * this.importTax, TaxRoundsUpTo); } return(Task.FromResult(subtotal + tax)); }
public void Round_WhenRoundingToNegative_Throws() { Assert.Throws <InvalidOperationException>(() => RoundHelper.RoundToNearest(10, -3)); }
public void Round_WhenUsingIntegerRounding_RoundsUpToNearestValue(decimal value, decimal roundTo, decimal expected) { var result = RoundHelper.RoundToNearest(value, roundTo); Assert.Equal(expected, result); }