public void TestingBreathFirstSearch(int[] arr, int[] expected)
        {
            var binarySearchTree = new BinarySearchTree();

            for (int i = 0; i < arr.Length; i++)
            {
                binarySearchTree.Insert(arr[i]);
            }

            var breadthFirstSearch = new BreadthFirstSearch();
            var result             = breadthFirstSearch.BreathFirstSearch(binarySearchTree.root);

            Assert.AreEqual(expected, result);
        }