code: def test_invalid_config(self):
      with chainer.using_config("use_cudnn", True):
          self.assertRaises(
              ValueError, chainer.should_use_cudnn, ">=auto"
          )
  
      with chainer.using_config("use_cudnn", False):
          self.assertRaises(
              ValueError, chainer.should_use_cudnn, ">=auto"
          )
  
      with chainer.using_config("use_cudnn", "on"):
          self.assertRaises(
              ValueError, chainer.should_use_cudnn, ">=auto"
          )
  
file_path: chainer/tests/chainer_tests/test_init.py
imports: import unittest
  import numpy
  import chainer
  from chainer.backends import cuda
  from chainer import testing
  from chainer.testing import attr
label_desc: Use image node_id 4 for calling the TestUseCuDNN obj's underlying member method code with example usage: obj.test_invalid_config() without return types