public void Can_Set_Center()
        {
            var cluster = new ClusterPrototype(Point.Zero);

            cluster.SetCenter(1, 2, 3);
            AssertClusterCenterIsAt(cluster, 1, 2, 3);
        }
 private void AssertClusterCenterIsAt(ClusterPrototype cluster, int x, int y, int z)
 {
     Assert.AreEqual(new Point(x, y, z), cluster.Center);
 }