code: def test_unseekable_incompleted_write(self):
      with UnseekableIO(TESTFN, "wb") as testfile:
          testfile.write(b"ababagalamaga")
          f = self.create_file(testfile)
          f.setnframes(self.nframes + 1)
          try:
              f.writeframes(self.frames)
          except OSError:
              pass
          try:
              f.close()
          except OSError:
              pass
  
      with open(TESTFN, "rb") as testfile:
          self.assertEqual(testfile.read(13), b"ababagalamaga")
          self.check_file(testfile, self.nframes + 1, 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 16 for calling the AudioWriteTests obj's underlying member method code with example usage: obj.test_unseekable_incompleted_write() without return types