code: def setUp(self):
      class Model(chainer.Chain):
          def __init__(self, ops):
              super(Model, self).__init__()
              self.ops = ops
  
          def __call__(self, x):
              with chainer.using_config("train", True):
                  y = self.ops(x)
              return y
  
      self.model = Model(self.ops)
      self.x = np.zeros((1, 5), dtype=np.float32)
  
file_path: chainer/tests/onnx_chainer_tests/functions_tests/test_noises.py
imports: import chainer
  import chainer.functions
  from chainer import testing
  import numpy
  from onnx_chainer_tests.helper import ONNXModelTest
label_desc: Use image node_id 1 for calling the TestNoises obj's underlying member method code with example usage: obj.setUp() and returns: y