code: def test_file_object(self):
      for file_path in [sample_file, flac_file, m4a_file]:
          disk_signal = Signal(file_path)
          with open(file_path, "rb") as file_handle:
              memory_signal = Signal(io.BytesIO(file_handle.read()))
          self.assertTrue((disk_signal == memory_signal).all)
  
imports: from __future__ import absolute_import, division, print_function
  import io
  import unittest
  from os.path import join
  from madmom.io.audio import *
  from .None import AUDIO_PATH, DATA_PATH
label_desc: Use image node_id 1 for calling the TestLoadAudioFromFileObject obj's underlying member method code with example usage: obj.test_file_object() without return types