public void Calc2_InvalidRate()
 {
     Assert.AreEqual("Invalid input", Ex3aLoops.Calc2("24", "100.0", ""));
 }
 public void Calc2_InvalidPayment()
 {
     Assert.AreEqual("Invalid input", Ex3aLoops.Calc2("24", "", "0.005"));
 }
 public void Calc2_InvalidMonths()
 {
     Assert.AreEqual("Invalid input", Ex3aLoops.Calc2("", "100.0", "0.005"));
 }
 public void Calc2_0Mo100US()
 {
     Assert.AreEqual("0.00", Ex3aLoops.Calc2("0", "100.0", "0.005"));
 }
 public void Calc2_120Mo20US()
 {
     Assert.AreEqual("2,892.37", Ex3aLoops.Calc2("120", "20.0", "0.003"));
 }
 public void Calc2_12Mo100US()
 {
     Assert.AreEqual("1,231.66", Ex3aLoops.Calc2("12", "100.0", "0.004"));
 }