code: def test_find_extensions(given, expected):
      """Test for find_extension function."""
      assert tools.find_extension(given) == expected
  
file_path: moviepy/tests/test_tools.py
imports: import contextlib
  import filecmp
  import importlib
  import io
  import os
  import shutil
  import sys
  import pytest
  import moviepy.tools
  from moviepy.video.io.downloader import download_webfile
label_desc: Use image node_id 1 for calling a global function with example usage: test_find_extensions(given, expected) without return types