docstr: `info` can check vorbis file correctly
code: def test_vorbis(self, sample_rate, num_channels, quality_level):
      """`info` can check vorbis file correctly"""
      duration = 1
      path = self.get_temp_path("data.vorbis")
      sox_utils.gen_audio_file(
          path,
          sample_rate,
          num_channels,
          compression=quality_level,
          duration=duration,
      )
      info = self._info(path)
      assert info.sample_rate == sample_rate
      # FFmpeg: AssertionError: assert 16384 == (16000 * 1)
      # assert info.num_frames == sample_rate * duration
      assert info.num_channels == num_channels
      assert (
          info.bits_per_sample == 0
      )  # bit_per_sample is irrelevant for compressed formats
      assert info.encoding == "VORBIS"
  
imports: import io
  import itertools
  import os
  import pathlib
  import tarfile
  from contextlib import contextmanager
  from functools import partial
  from parameterized import parameterized
  from torchaudio._backend.utils import get_info_func
  from torchaudio._internal import module_utils
  from torchaudio.utils.sox_utils import get_buffer_size, set_buffer_size
  from torchaudio_unittest.backend.common import get_bits_per_sample, get_encoding
  from torchaudio_unittest.backend.dispatcher.sox.common import name_func
  from torchaudio_unittest.common_utils import get_asset_path, get_wav_data, HttpServerMixin, PytorchTestCase, save_wav, skipIfNoExec, skipIfNoFFmpeg, skipIfNoModule, sox_utils, TempDirMixin
label_desc: Use image node_id 6 for calling the TestInfo obj's underlying member method code with example usage: obj.test_vorbis(sample_rate, num_channels, quality_level) without return types