code: def test_errors(self):
      with self.assertRaises(ValueError):
          CombFilterbankProcessor("xyz", [2, 3], [0.5, 0.5])
  
imports: from __future__ import absolute_import, division, print_function
  import unittest
  from madmom.audio.comb_filters import *
label_desc: Use image node_id 2 for calling the TestCombFilterbankClass obj's underlying member method code with example usage: obj.test_errors() without return types