code: def test_suite():
      return unittest.makeSuite(FileUtilTestCase)
  
file_path: catboost/contrib/tools/python/src/Lib/distutils/tests/test_file_util.py
imports: import unittest
  import os
  import shutil
  from distutils.file_util import move_file, write_file, copy_file
  from distutils import log
  from distutils.tests import support
  from test.test_support import run_unittest
label_desc: Use image node_id 1 for calling a global function with example usage: test_suite() and returns: unittest