public IEnumerable <NetPresentValuePerRate> CalculateNetPresentValueDynamicRate(
double initialInvestment,
double lowerBoundDiscountRate,
double upperBoundDiscountRate,
double discountRateIncrement,
IEnumerable <PeriodAmount> cashFlows)
{
FinancialValidator.ValidateRate(lowerBoundDiscountRate);
FinancialValidator.ValidateRate(upperBoundDiscountRate);
FinancialValidator.ValidateRateIncrement(upperBoundDiscountRate, discountRateIncrement);
cashFlows.ToList().ForEach(cf => FinancialValidator.ValidateExponent(cf.Period));
var netPresentValues = new List <NetPresentValuePerRate>();
for (double rate = lowerBoundDiscountRate; rate <= upperBoundDiscountRate; rate += discountRateIncrement)
{
var value = CalculateNetPresentValue(initialInvestment, rate, cashFlows);
netPresentValues.Add(new NetPresentValuePerRate()
{
Amount = value,
Rate = rate
});
}
return(netPresentValues);
}
public void ValidateRate_Throws_ArgumentException()
{
// Arrange
double invalidRate = -1D;
// Act
Action act = () => FinancialValidator.ValidateRate(invalidRate);
// Assert
Assert.Throws <ArgumentException>(act);
}
public void ValidateExponent_Throws_ArgumentException()
{
// Arrange
double invalidExponent = -2D;
// Act
Action act = () => FinancialValidator.ValidateExponent(invalidExponent);
// Assert
Assert.Throws <ArgumentException>(act);
}
public void ValidateRateIncrement_Throws_ArgumentException()
{
// Arrange
double upperBoundRate = 15D;
double invalidRateIncrement = 16D;
// Act
Action act = () => FinancialValidator.ValidateRateIncrement(upperBoundRate, invalidRateIncrement);
// Assert
Assert.Throws <ArgumentException>(act);
}
