code: def layer(self):
      from lasagne.layers.noise import GaussianNoiseLayer
  
      return GaussianNoiseLayer(Mock(output_shape=(None,)))
  
imports: from mock import Mock
  import numpy
  import numpy
  from numpy.random import RandomState
  import theano
  import pytest
  from lasagne.random import get_rng, set_rng
label_desc: Use image node_id 1 for calling the TestGaussianNoiseLayer obj's underlying member method code with example usage: obj.layer() and returns: GaussianNoiseLayer