code: def test_normalize_data_format():
      assert (
          keras_utils.normalize_data_format("Channels_Last")
          == "channels_last"
      )
      assert (
          keras_utils.normalize_data_format("CHANNELS_FIRST")
          == "channels_first"
      )
  
      with pytest.raises(
          ValueError, match="The `data_format` argument must be one of"
      ):
          keras_utils.normalize_data_format("invalid")
  
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 1 for calling a global function with example usage: test_normalize_data_format() without return types