code: def test_tuple_shape(self, func, input_layer, ExpressionLayer):
      from lasagne.layers.helper import get_output
  
      X, expected = self.np_result(func, input_layer)
      layer = ExpressionLayer(
          input_layer, func, output_shape=expected.shape
      )
      assert layer.get_output_shape_for(X.shape) == expected.shape
  
      output = get_output(layer, X).eval()
      assert np.allclose(output, expected)
  
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 TestExpressionLayer obj's underlying member method code with example usage: obj.test_tuple_shape(func, input_layer, ExpressionLayer) without return types