code: def test_read_not_from_start(self):
      with open(TESTFN, "wb") as testfile:
          testfile.write(b"ababagalamaga")
          with open(self.sndfilepath, "rb") as f:
              testfile.write(f.read())
  
      with open(TESTFN, "rb") as testfile:
          self.assertEqual(testfile.read(13), b"ababagalamaga")
          with self.module.open(testfile, "rb") as f:
              self.assertEqual(f.getnchannels(), self.nchannels)
              self.assertEqual(f.getsampwidth(), self.sampwidth)
              self.assertEqual(f.getframerate(), self.framerate)
              self.assertEqual(f.getnframes(), self.sndfilenframes)
              self.assertEqual(f.readframes(self.nframes), self.frames)
  
imports: from test.support import findfile
  from test.support.os_helper import TESTFN, unlink
  import array
  import io
  import pickle
label_desc: Use image node_id 6 for calling the AudioTestsWithSourceFile obj's underlying member method code with example usage: obj.test_read_not_from_start() without return types