class_docstr: Smoke test for ffmpeg_utils module
docstr: `set_log_level` persists log level
code: def test_set_log_level(self):
      """`set_log_level` persists log level"""
      for i in range(-100, 100):
          ffmpeg_utils.set_log_level(i)
          assert ffmpeg_utils.get_log_level() == i
  
file_path: audio/test/torchaudio_unittest/utils/ffmpeg_utils_test.py
imports: from torchaudio.utils import ffmpeg_utils
  from torchaudio_unittest.common_utils import PytorchTestCase, skipIfNoFFmpeg
label_desc: Use image node_id 3 for calling the TestFFmpegUtils obj's underlying member method code with example usage: obj.test_set_log_level() without return types