public void CompoundInterestTest()
{
double amount = CompoundInterest.GetAmount(principal, rate, time);
double interest = CompoundInterest.GetInterest(principal, rate, time);
Assert.AreEqual(principal, CompoundInterest.GetPrincipal(amount, rate, time));
Assert.AreEqual(time, CompoundInterest.GetTime(amount, principal, rate));
Assert.AreEqual(rate, CompoundInterest.GetRate(amount, principal, time));
}