code: def test_audio(self):
      compare_proto(summary.audio("dummy", tensor_N(shape=(42,))), self)
  
imports: from __future__ import absolute_import, division, print_function, unicode_literals
  from tensorboardX import summary
  from .expect_reader import compare_proto, write_proto
  import numpy
  import pytest
  import unittest
  import torch
label_desc: Use image node_id 16 for calling the SummaryTest obj's underlying member method code with example usage: obj.test_audio() without return types