code: def test_get_nlu_directory(project):
      data_dir = os.path.join(project, "data")
      nlu_directory = rasa.shared.data.get_nlu_directory([data_dir])
  
      nlu_files = os.listdir(nlu_directory)
  
      assert len(nlu_files) == 1
      assert nlu_files[0].endswith("nlu.yml")
  
file_path: rasa/tests/shared/test_data.py
imports: import os
  import tempfile
  from pathlib import Path
  import pytest
  import rasa.shared
  import rasa.shared.data
  from rasa.shared.nlu.training_data.loading import load_data
  from rasa.shared.utils.io import write_text_file, json_to_string
  from rasa.shared.core.training_data.story_reader.yaml_story_reader import YAMLStoryReader
label_desc: Use image node_id 4 for calling a global function with example usage: test_get_nlu_directory(project) without return types