docstr: MP3 file without extension can be loaded
  
  https://github.com/pytorch/audio/issues/1040
  
  The file was generated with the following command
      ffmpeg -f lavfi -i "sine=frequency=1000:duration=5" -ar 16000 -f mp3 test_noext
docstr_tok: ["MP3","file","without","extension","can","be","loaded","https",":","\/\/github.com\/pytorch\/audio\/issues\/1040","The","file","was","generated","with","the","following","command","ffmpeg","-f","lavfi","-i","``","sine=frequency=1000",":","duration=5","''","-ar","16000","-f","mp3","test_noext"]
code: def test_mp3(self):
      """MP3 file without extension can be loaded
  
      https://github.com/pytorch/audio/issues/1040
  
      The file was generated with the following command
          ffmpeg -f lavfi -i "sine=frequency=1000:duration=5" -ar 16000 -f mp3 test_noext
      """
      path = get_asset_path("mp3_without_ext")
      _, sr = sox_io_backend.load(path, format="mp3")
      assert sr == 16000
  
imports: import itertools
  import torch
  from parameterized import parameterized
  from torchaudio.backend import sox_io_backend
  from torchaudio_unittest.common_utils import get_asset_path, get_wav_data, load_wav, nested_params, PytorchTestCase, save_wav, skipIfNoExec, skipIfNoSox, skipIfNoSoxDecoder, sox_utils, TempDirMixin
  from .common import name_func
label_desc: Use image node_id 1 for calling the TestLoadWithoutExtension obj's underlying member method code with example usage: obj.test_mp3() without return types