public void InterviewTree_IsBinaryTreeBalanced_NullRoot_True()
        {
            var interviewBalancedTree = new InterviewBalancedBinaryTrees();

            Assert.True(interviewBalancedTree.IsBinaryTreeBalanced(data.NullTree()));
        }
        public void LinearTree_IsBinaryTreeBalanced_NullRoot_True()
        {
            var linearBalancedTree = new LinearBalancedBinaryTrees();

            Assert.True(linearBalancedTree.IsBinaryTreeBalanced(data.NullTree()));
        }