code: def test_get_output_for(self, layer_vars):
      layer = layer_vars["layer"]
      nonlinearity = layer_vars["nonlinearity"]
  
      input = theano.tensor.matrix()
      result = layer.get_output_for(input)
      nonlinearity.assert_called_with(input)
      assert result is nonlinearity.return_value
  
imports: from mock import Mock
  import numpy
  import pytest
  import theano
  from lasagne.layers import InputLayer, standardize, get_output, get_all_params
  from lasagne.utils import floatX
label_desc: Use image node_id 5 for calling the TestNonlinearityLayer obj's underlying member method code with example usage: obj.test_get_output_for(layer_vars) without return types