public void AddNode()
        {
            Tree.Node node = new Tree.Node("a");
            node.Add("b");

            Assert.AreEqual(1, node.Children.Count);
        }
        public void EmptyNode()
        {
            Tree.Node node = new Tree.Node("a");

            Assert.AreEqual("a", node.Data);
            Assert.AreEqual(0, node.Children.Count);
        }