code: def assert_between(self, layer, input, output):
      slopes = output / input
      slopes = slopes[input < 0]
      assert slopes.min() >= layer.lower
      assert slopes.max() <= layer.upper
      assert slopes.var() > 0
  
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 7 for calling the TestRandomizedRectifierLayer obj's underlying member method code with example usage: obj.assert_between(layer, input, output) without return types