public void TestCreatingNode()
{
var node1 = new BinaryTreeNode<int>(50);
Assert.AreEqual(node1.Data, 50);
var node2 = new BinaryTreeNode<int>(50, new BinaryTreeNode<int>(1), new BinaryTreeNode<int>(51));
Assert.AreEqual(node2.Data, 50);
Assert.AreEqual(node2.Left.Data, 1);
Assert.AreEqual(node2.Right.Data, 51);
}