code: def test_unpooling_1d(self):
      (x, ksize) = self._get_data(1)
      testing.assert_allclose(
          functions.unpooling_nd(x, ksize).data,
          functions.unpooling_1d(x, ksize).data,
      )
  
imports: import itertools
  import unittest
  import numpy
  import six
  import chainer
  from chainer import backend
  from chainer import functions
  from chainer import testing
  from chainer.utils import conv
  from chainer.utils import type_check
label_desc: Use image node_id 2 for calling the TestUnpoolingNDWrappers obj's underlying member method code with example usage: obj.test_unpooling_1d() without return types