code: def check_invalid_option(self, xp):
      h = xp.asarray(self.h)
  
      with self.assertRaises(ValueError):
          functions.decov(h, "invalid_option")
  
imports: import unittest
  import numpy
  import six
  import chainer
  from chainer.backends import cuda
  from chainer import functions
  from chainer import testing
  from chainer.testing import attr
  from chainer.testing import backend
label_desc: Use image node_id 2 for calling the TestDeconvInvalidReductionOption obj's underlying member method code with example usage: obj.check_invalid_option(xp) without return types