code: def test_forward_cpu_wide(self):
      x_data = numpy.random.rand(2, 3, 15, 15).astype(self.dtype)
      x = chainer.Variable(x_data)
      functions.max_pooling_2d(x, 6, stride=6, pad=0)
  
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.testing import backend
  from chainer_tests.functions_tests.pooling_tests import pooling_nd_helper
label_desc: Use image node_id 1 for calling the TestMaxPooling2DForwardCpuWide obj's underlying member method code with example usage: obj.test_forward_cpu_wide() without return types