public void CalculatePaymentDivideZeroTest()
{
var loan = new Loan(0.01M);
Assert.ThrowsException <ArgumentException>(
() => loan.CalculatePayments(2000M, 0)); //will fail
}
public void TestLoanCalculation()
{
Loan l = new Loan("Alice", (float)0.07, 1000, 36);
l.CalculatePayments();
Assert.AreEqual("Alice", l.Lender, "Lender check failed");
Assert.AreEqual((float)0.07, l.Rate, "Rate check failed");
Assert.AreEqual(1000, l.LoanAmount, "LoanAmount check failed");
Assert.AreEqual("30.88", l.Monthly, "MonthlyPayments check failed");
Assert.AreEqual("1,111.57", l.Total, "TotalRepayment check failed");
}
public void CalculatePaymentsTest()
{
var loan = new Loan(0.0314M);
UInt16 years = 10;
var totalAmount = 10000M;
var payments = loan.CalculatePayments(totalAmount, years);
var totalCost = payments.Sum(p => p.Total);
//compound interest equation
var correctCost = seriesLoanTotalCost(years, 12, totalAmount, loan.Interest);
Assert.AreEqual(Decimal.Round(totalCost, 3), Decimal.Round(correctCost, 3));
}