public void StartFizzBuzzReturnsFifteenStrings()
{
fizzBuzz.length = 15;
string[] expected = new string[] { "1", "2", "fizz", "4", "buzz", "fizz", "7", "8", "fizz", "buzz", "11", "fizz", "13", "14", "fizzbuzz" };
string[] output = fizzBuzz.StartFizzBuzz();
Assert.IsTrue(output.Length == 15);
Assert.AreEqual(expected, output);
}