code: def test_simple():
      test_utils.layer_test(
          Maxout, kwargs={"num_units": 3}, input_shape=(5, 4, 2, 18)
      )
  
file_path: addons/tensorflow_addons/layers/tests/maxout_test.py
imports: import pytest
  import numpy
  from tensorflow_addons.layers.maxout import Maxout
  from tensorflow_addons.utils import test_utils
label_desc: Use image node_id 1 for calling a global function with example usage: test_simple() without return types