class_docstr: Test the ImperceptibleASR attack.
class_docstr_tok: ["Test","the","ImperceptibleASR","attack","."]
code: def test_is_subclass(self, art_warning):
      try:
          assert issubclass(ImperceptibleASR, EvasionAttack)
      except ARTTestException as e:
          art_warning(e)
  
imports: from __future__ import absolute_import, division, print_function, unicode_literals
  import logging
  import numpy
  import pytest
  from art.attacks.attack import EvasionAttack
  from art.attacks.evasion.imperceptible_asr.imperceptible_asr import ImperceptibleASR, PsychoacousticMasker
  from tests.utils import ARTTestException
label_desc: Use image node_id 1 for calling the TestImperceptibleASR obj's underlying member method code with example usage: obj.test_is_subclass(art_warning) without return types