code: def test_eps_gpu(self):
      self.check_eps(cuda.to_gpu(numpy.zeros_like(self.x)))
  
imports: import functools
  import itertools
  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
label_desc: Use image node_id 13 for calling the TestL2Normalization obj's underlying member method code with example usage: obj.test_eps_gpu() without return types