code: def test_invlaid_cpu(self):
      self.check_invalid(self.x, self.ind)
  
imports: import unittest
  import numpy
  import chainer
  from chainer.backends import cuda
  from chainer import functions
  from chainer import testing
  from chainer.testing import attr
  from chainer.utils import force_array
label_desc: Use image node_id 4 for calling the TestPermutateInvalidIndices obj's underlying member method code with example usage: obj.test_invlaid_cpu() without return types