code: def setUp(self):
      self.link = links.Linear(4)
      self.x = numpy.random.uniform(-1, 1, (0, 3)).astype(numpy.float32)
  
imports: import os
  import tempfile
  import unittest
  import numpy
  import chainer
  from chainer.backends import cuda
  from chainer import gradient_check
  from chainer import links
  from chainer.serializers import npz
  from chainer import testing
  from chainer.testing import attr
  from chainer.testing import condition
  from chainer.utils import type_check
label_desc: Use image node_id 1 for calling the TestEmptyBatchInitialize obj's underlying member method code with example usage: obj.setUp() without return types