docstr: `self._info` can check flac file correctly
docstr_tok: ["`","self._info","`","can","check","flac","file","correctly"]
code: def test_flac(self, sample_rate, num_channels, compression_level):
      """`self._info` can check flac file correctly"""
      duration = 1
      path = self.get_temp_path("data.flac")
      sox_utils.gen_audio_file(
          path,
          sample_rate,
          num_channels,
          compression=compression_level,
          duration=duration,
      )
      info = self._info(path)
      assert info.sample_rate == sample_rate
      assert info.num_frames == sample_rate * duration
      assert info.num_channels == num_channels
      assert info.bits_per_sample == 24  # FLAC standard
      assert info.encoding == "FLAC"
  
imports: import itertools
  import os
  from functools import partial
  from parameterized import parameterized
  from torchaudio._backend.utils import get_info_func
  from torchaudio._internal import module_utils
  from torchaudio_unittest.backend.common import get_encoding
  from torchaudio_unittest.common_utils import disabledInCI, get_asset_path, get_wav_data, HttpServerMixin, PytorchTestCase, save_wav, skipIfNoExec, skipIfNoModule, skipIfNoSox, skipIfNoSoxDecoder, sox_utils, TempDirMixin
  from .common import name_func
label_desc: Use image node_id 3 for calling the TestInfo obj's underlying member method code with example usage: obj.test_flac(sample_rate, num_channels, compression_level) without return types