code: def setUp(self):
      self.x = cuda.cupy.random.uniform(-1, 1, (4, 3)).astype(
          numpy.float32
      )
      self.t = cuda.cupy.random.randint(0, 3, (4, 3)).astype(
          numpy.int32
      )
      with chainer.using_config("use_cudnn", self.use_cudnn):
          self.expect = chainer.should_use_cudnn("==always")
  
imports: import math
  import unittest
  import numpy
  import six
  import chainer
  from chainer.backends import cuda
  from chainer import functions
  from chainer import gradient_check
  from chainer import testing
  from chainer.testing import attr
  from chainer import utils
label_desc: Use image node_id 1 for calling the TestSigmoidCrossEntropyCudnnCall obj's underlying member method code with example usage: obj.setUp() without return types