public void GetLoanPaymentOverwiew_ExpectedBehavior()
{
// Arrange
var loanPaymentCalculatorInternal = new LoanPaymentCalculatorInternal();
var loanParameters = new LoanParameters
{
LoanAmount = 500000,
DurationOfLoanInYears = 10,
};
var loanTerms = new LoanTerms
{
AnnualInterestRate = 0.05m,
PaymentsPerYear = 12,
AdminFeeRelative = 0.01m,
MaxAdminFee = 10000,
};
// Act
var result = loanPaymentCalculatorInternal.GetLoanPaymentOverwiew(
loanParameters,
loanTerms);
// Assert
Assert.Equal(500000, result.LoanAmount);
Assert.Equal(10, result.DurationOfLoanInYears);
Assert.Equal(5303.28m, result.MonthlyPayment);
Assert.Equal(136393.09m, result.AmountPaidAsInterest);
Assert.Equal(5000m, result.AdministrativeFee);
}
public void GetAdministrativeFeeTest_ExpectedBehavior(decimal loanAmount, decimal adminFeeRelative, decimal maxAdminFee, decimal fee)
{
// Arrange
var loanPaymentCalculatorInternal = new LoanPaymentCalculatorInternal();
// Act
var result = loanPaymentCalculatorInternal.GetAdministrativeFee(
loanAmount,
adminFeeRelative,
maxAdminFee);
Assert.Equal(fee, result);
}
public void GetMonthlyPayment_ExpectedBehavior()
{
// Arrange
var loanPaymentCalculatorInternal = new LoanPaymentCalculatorInternal();
var loanAmount = 500000;
var amountOfPayments = 120;
var interestRatePerPayment = 0.05 / 12;
// Act
var result = loanPaymentCalculatorInternal.GetMonthlyPayment(
loanAmount,
amountOfPayments,
interestRatePerPayment);
Assert.Equal(5303.28m, Math.Round(result, 2));
}
