def METHOD_NAME(self):
    self.assertEqual((True, {}),
                     _binary_dm_sniffer(open(self.basic_fname, 'rb')))
    self.assertEqual((False, {}),
                     _binary_dm_sniffer(open(self.badids_fname, 'rb')))
    self.assertEqual((False, {}),
                     _binary_dm_sniffer(open(self.noheader_fname, 'rb')))