public void Fixed_Monthly_Payment_should_Work(decimal totalLoan, decimal interest, int years, decimal expected)
{
var result = MortgageMath.FixedMonthlyPayment(totalLoan, interest, years);
Assert.AreEqual(expected, result);
}
public void Power_Of_Integer_should_Work()
{
var result = MortgageMath.Power(2, 2);
Assert.AreEqual(4, result);
}