code: def test_set_allfiles(self):
      file_list = FileList()
      files = ["a", "b", "c"]
      file_list.set_allfiles(files)
      self.assertEqual(file_list.allfiles, files)
  
imports: import os
  import re
  import unittest
  from distutils import debug
  from distutils.log import WARN
  from distutils.errors import DistutilsTemplateError
  from distutils.filelist import glob_to_re, translate_pattern, FileList
  from test.test_support import captured_stdout, run_unittest
  from distutils.tests import support
label_desc: Use image node_id 6 for calling the FileListTestCase obj's underlying member method code with example usage: obj.test_set_allfiles() without return types