code: def setUp(self):
      shape = self.shape
      dtype = self.dtype
      self.m = numpy.random.uniform(-1, 1, shape).astype(dtype)
      self.v = numpy.random.uniform(-1, 1, shape).astype(dtype)
      self.gy = numpy.random.uniform(-1, 1, shape).astype(dtype)
      self.ggm = numpy.random.uniform(-1, 1, shape).astype(dtype)
      self.ggv = numpy.random.uniform(-1, 1, shape).astype(dtype)
  
      self.check_backward_options = {"atol": 1e-3, "rtol": 1e-2}
      self.check_double_backward_options = {"atol": 5e-4, "rtol": 5e-3}
      if self.dtype == numpy.float16:
          self.check_backward_options["dtype"] = numpy.float64
          self.check_double_backward_options["dtype"] = numpy.float64
  
file_path: chainer/tests/chainer_tests/functions_tests/noise_tests/test_gaussian.py
imports: import unittest
  import numpy
  import chainer
  from chainer import functions
  from chainer import gradient_check
  from chainer import testing
label_desc: Use image node_id 1 for calling the TestGaussian obj's underlying member method code with example usage: obj.setUp() without return types