code: def test_normalize_tuple():
      assert (2, 2, 2) == keras_utils.normalize_tuple(
          2, n=3, name="strides"
      )
      assert (2, 1, 2) == keras_utils.normalize_tuple(
          (2, 1, 2), n=3, name="strides"
      )
  
      with pytest.raises(ValueError):
          keras_utils.normalize_tuple((2, 1), n=3, name="strides")
  
      with pytest.raises(TypeError):
          keras_utils.normalize_tuple(None, n=3, name="strides")
  
file_path: addons/tensorflow_addons/utils/tests/keras_utils_test.py
imports: import sys
  import pytest
  import tensorflow
  from tensorflow_addons.utils import keras_utils
label_desc: Use image node_id 2 for calling a global function with example usage: test_normalize_tuple() without return types