public void SpareTest()
{
List <int> balls = new List <int>();
Spare frame = new Spare(1);
frame.AddBalls(ref balls);
balls.Add(2);
Assert.Equal(12, frame.Score);
Assert.Equal <int>(new int[] { 1, 9 }, frame.PinsPerBall);
Assert.Equal <int>(new int[] { 1, 9, 2 }, balls);
}
