static void Main()
 {
     var fizzbuzz = new FizzBuzzClass();
       for (var i = 1; i <= 100; i++)
       {
     fizzbuzz.Increment();
     Console.WriteLine(fizzbuzz.Write());
       }
       Console.ReadLine();
 }
 public void should_increment()
 {
     var fb = new FizzBuzzClass();
       fb.Increment();
       Assert.IsTrue(fb.Counter == 1);
 }