public void GetCircleTest(int x, int y, int r, int[] xs, int[] ys)
        {
            var a = new CirclePointsCalculator();
            var result = a.GetCircle(new Point(x, r), r);
            Assert.IsNotNull(result);

            Assert.That(Array.ConvertAll(result, p => p.X), Is.EquivalentTo(xs));
            Assert.That(Array.ConvertAll(result, p => p.Y), Is.EquivalentTo(ys));
        }
 static void Main(string[] args)
 {
     var c = new CirclePointsCalculator();
     var result = c.GetCircle(new Point(10, 10), 5);
     foreach (var p in result)
     {
         Console.SetCursorPosition(p.X, p.Y);
         Console.Write("*");
     }
     Console.ReadKey();
 }