BinaryTreeTests.BinaryTreeTests.Test_CopyTo C# (CSharp) Method

        public void Test_CopyTo()
        {
            var tree = new BinaryTree<int>() { 90, 50,150, 20, 75 };
            var arr = new INode<int>[5];
            tree.CopyTo(arr,0);

            INode<int>[] expected = {
                new BinaryTreeNode<int>(90),
                new BinaryTreeNode<int>(50),
                new BinaryTreeNode<int>(150),
                new BinaryTreeNode<int>(20),
                new BinaryTreeNode<int>(75),
            };

            for (var i = 0; i < arr.Length; i++)
            {
                Assert.AreEqual(arr[i].Data, expected[i].Data);
            }

            var arr2 = new INode<int>[1];
            tree.CopyTo(arr2,0);
            Assert.AreEqual(arr2[0].Data, 90);
            Assert.AreEqual(arr2.Length, 1);
        }