code: def setUp(self):
      shape = (2, 3) + self.dims
      self.img = numpy.random.uniform(-1, 1, shape).astype(
          numpy.float32
      )
  
imports: import itertools
  import unittest
  import numpy
  from six import moves
  from chainer.backends import cuda
  from chainer import testing
  from chainer.testing import attr
  from chainer.utils import conv_nd
label_desc: Use image node_id 1 for calling the TestIm2ColND obj's underlying member method code with example usage: obj.setUp() without return types