code: def test_invalid_shape_gpu(self):
      self.check_invalid_shape(cuda.cupy)
  
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.utils import force_array
  from chainer.utils import type_check
label_desc: Use image node_id 4 for calling the TestInvalidShape obj's underlying member method code with example usage: obj.test_invalid_shape_gpu() without return types