code: def setUp(self):
      shape = (2, 5, 2)
      self.x = chainer.Variable(numpy.zeros(shape, dtype=self.dtype))
  
imports: import unittest
  import numpy
  import chainer
  from chainer.backends import cuda
  from chainer import links
  from chainer import testing
  from chainer.testing import attr
label_desc: Use image node_id 1 for calling the TestInvalidInitialize obj's underlying member method code with example usage: obj.setUp() without return types