public void PrimeFindIndexOfElement()
{
PrimeNumbers prime = new PrimeNumbers();
int input = 73;
int expected = 20;
int actual = prime.FindIndex(input);
Assert.AreEqual(expected, actual);
}
public void PrimeFindIndexOfElementFails()
{
PrimeNumbers prime = new PrimeNumbers();
int input = 103;
prime.FindIndex(input);
}