code: def test__all__(self):
      not_exported = {
          "WAVE_FORMAT_PCM",
          "WAVE_FORMAT_EXTENSIBLE",
          "KSDATAFORMAT_SUBTYPE_PCM",
      }
      support.check__all__(self, wave, not_exported=not_exported)
  
imports: import unittest
  from test import audiotests
  from test import support
  import io
  import struct
  import sys
  import wave
label_desc: Use image node_id 1 for calling the MiscTestCase obj's underlying member method code with example usage: obj.test__all__() without return types