code: def before_test(self, test_name):
      # cuDNN 5 and 5.1 results suffer from precision issues
      using_old_cudnn = (
          self.backend_config.xp is cuda.cupy
          and self.backend_config.use_cudnn == "always"
          and cuda.cuda.cudnn.getVersion() < 6000
      )
      if using_old_cudnn:
          self.check_backward_options.update(
              {"atol": 3e-2, "rtol": 5e-2}
          )
  
imports: import numpy
  import chainer
  from chainer.backends import cuda
  import chainer.functions
  from chainer import links
  from chainer import testing
  from chainer.testing import parameterize
label_desc: Use image node_id 2 for calling the TestDeconvolution2D obj's underlying member method code with example usage: obj.before_test(test_name) without return types