public void GetMonthlyInstallmentShouldWorkCorrectly()
{
//Arrange
var parameters = new CalculateMonthlyInstallmentParameters
{
MaturityInMonths = 36,
InterestRateAsPercentage = 1.5,
LoanAmount = 48000,
ProductType = ProductType.PersonalLoan
};
//Act
var sut = MonthlyInstallment.Get(parameters);
//Assert
sut.MonthlyInstallment.Should().NotBe(0);
}
public void WhenMaturityIsZero_GetMonthlyInstallmentShouldReturnEmptyReturnDto()
{
//Arrange
var parameters = new CalculateMonthlyInstallmentParameters
{
MaturityInMonths = 0,
InterestRateAsPercentage = 1.5,
LoanAmount = 48000,
ProductType = ProductType.PersonalLoan
};
//Act
var sut = MonthlyInstallment.Get(parameters);
//Assert
sut.MonthlyInstallment.Should().Be(0);
}
public static CalculateMonthlyInstallmentReturnValues Get(CalculateMonthlyInstallmentParameters parameters)
{
var totalTaxRatio = TotalTaxRatio.Get(parameters.ProductType);
if (parameters.MaturityInMonths == 0)
{
return(new CalculateMonthlyInstallmentReturnValues());
}
return(new CalculateMonthlyInstallmentReturnValues
{
MonthlyInstallment = -new Pmt().PaymentInternal(parameters.InterestRateAsPercentage / 100 * (1 + totalTaxRatio),
parameters.MaturityInMonths,
parameters.LoanAmount,
0,
DueDate.EndOfPeriod)
});
}