code: def test_musan(self, subset):
      dataset = Musan(self.get_base_temp_dir(), subset)
      for data, sample_rate, file_name in dataset:
          self.assertTrue(file_name in self.samples[subset])
          self.assertEqual(data, self.samples[subset][file_name][0])
          self.assertEqual(sample_rate, _SAMPLE_RATE)
  
file_path: audio/test/torchaudio_unittest/prototype/datasets/musan_test.py
imports: import os
  from collections import defaultdict
  from parameterized import parameterized
  from torchaudio.prototype.datasets import Musan
  from torchaudio_unittest.common_utils import get_whitenoise, save_wav, TempDirMixin, TorchaudioTestCase
label_desc: Use image node_id 2 for calling the MusanTest obj's underlying member method code with example usage: obj.test_musan(subset) without return types