code: def test_increase_min_and_max_value__non_standard_source(self):
      # (-1.0, 1.0) -> (1.0, 3.0)
      arr = np.float32([[-1.0, 0.0, 1.0], [1.0, 0.0, -1.0]])
  
      observed = ia.HeatmapsOnImage.change_normalization(
          arr, (-1.0, 1.0), (1.0, 3.0)
      )
  
      expected = np.float32([[1.0, 2.0, 3.0], [3.0, 2.0, 1.0]])
      assert np.allclose(observed, expected)
  
imports: from __future__ import print_function, division, absolute_import
  import sys
  import numpy
  import six.moves
  import imgaug
label_desc: Use image node_id 3 for calling the TestHeatmapsOnImage_change_normalization obj's underlying member method code with example usage: obj.test_increase_min_and_max_value__non_standard_source() without return types