code: def test_get_output_for(self, layerclass):
      layer = layerclass(Mock(output_shape=(None,)), width=2)
      input = np.zeros((1, 2, 10))
      trimmed = theano.shared(input[:, :, 2:-2])
      result = layer.get_output_for(trimmed).eval()
  
      assert (result == input).all()
  
imports: import numpy
  import pytest
  import theano
  from mock import Mock
label_desc: Use image node_id 3 for calling the TestPadLayer obj's underlying member method code with example usage: obj.test_get_output_for(layerclass) without return types