code: def test_valid_instantiation_ksize_is_none(self):
      l = links.MLPConvolution2D(
          self.out_channels,
          self.ksize,
          None,
          self.stride,
          self.pad,
          functions.relu,
          conv_init=None,
          bias_init=None,
      )
      x = numpy.random.uniform(
          -1, 1, (10, self.in_channels, 10, 10)
      ).astype(numpy.float32)
      l(x)  # create weight tensors of convolutions by initialization
  
      self.assertEqual(len(l), 2)
      self.assertEqual(
          l[0].W.shape,
          (
              self.out_channels[0],
              self.in_channels,
              self.ksize,
              self.ksize,
          ),
      )
      self.assertEqual(
          l[1].W.shape,
          (self.out_channels[1], self.out_channels[0], 1, 1),
      )
  
imports: import unittest
  import mock
  import numpy
  import chainer
  from chainer.backends import cuda
  from chainer import functions
  from chainer import links
  from chainer import testing
  from chainer.testing import attr
label_desc: Use image node_id 2 for calling the TestInitArgumentForv2 obj's underlying member method code with example usage: obj.test_valid_instantiation_ksize_is_none() without return types