new_contents: import sndhdr
  import unittest
  from test.support import findfile
  
  class TestFormats(unittest.TestCase):
      def test_data(self):
          for filename, expected in (
              ('sndhdr.8svx', ('8svx', 0, 1, 0, 8)),
              ('sndhdr.aifc', ('aifc', 44100, 2, 5, 16)),
              ('sndhdr.aiff', ('aiff', 44100, 2, 5, 16)),
              ('sndhdr.au', ('au', 44100, 2, 5.0, 16)),
              ('sndhdr.hcom', ('hcom', 22050.0, 1, -1, 8)),
              ('sndhdr.sndt', ('sndt', 44100, 1, 5, 8)),
              ('sndhdr.voc', ('voc', 0, 1, -1, 8)),
              ('sndhdr.wav', ('wav', 44100, 2, -1, 16)),
          ):
              filename = findfile(filename, subdir="sndhdrdata")
              what = sndhdr.what(filename)
              self.assertNotEqual(what, None, filename)
              self.assertSequenceEqual(what, expected)
  
  if __name__ == '__main__':
      unittest.main()
  
subject: Add missing file from the previous commit (r82859): test_sndhdr.py