public ActionResult <GetPaymentAmountResult> GetPaymentAmount([FromBody] GetPaymentAmountInput input)
{
var interestRate = new InterestRate(this.Configuration);
var paymentCalculator = new PaymentCalculator(input, interestRate.Rate);
return(new GetPaymentAmountResult {
PaymentAmount = paymentCalculator.Calculate()
});
}
public PaymentCalculator(GetPaymentAmountInput input, double interestRate)
{
this.AskingPrice = input.AskingPrice;
this.DownPayment = input.DownPayment;
this.PaymentSchedule = input.PaymentSchedule;
this.AmortizationPeriod = input.AmortizationPeriod;
this.InterestRate = interestRate;
// Make sure the incoming parameters make sense
this.Validate();
}
public void TestAnotherPaymentCalculation()
{
GetPaymentAmountInput testInput = new GetPaymentAmountInput
{
AskingPrice = 360000.00,
DownPayment = 72000.00,
PaymentSchedule = PaymentScheduleOptions.monthly,
AmortizationPeriod = 300
};
var paymentCalculator = new PaymentCalculator(testInput, 0.025);
var paymentAmount = paymentCalculator.Calculate();
Assert.Equal <double>(1292.0161941406197, paymentAmount);
}
public void TestPaymentCalculation()
{
GetPaymentAmountInput testInput = new GetPaymentAmountInput
{
AskingPrice = 750000.00,
DownPayment = 158000.00,
PaymentSchedule = PaymentScheduleOptions.monthly,
AmortizationPeriod = 240
};
var paymentCalculator = new PaymentCalculator(testInput, 0.025);
var paymentAmount = paymentCalculator.Calculate();
Assert.Equal <double>(3137.0251267506815, paymentAmount);
}