code: def test_is_archive(self):
      # test zip
      self.assertTrue(is_archive(self.zip))
      # test tar
      self.assertTrue(is_archive(self.tar))
      # test tar.gz
      self.assertTrue(is_archive(self.targz))
      # test rar
      self.assertFalse(is_archive(self.rar))
      # test dir
      self.assertFalse(is_archive(self.dir))
  
imports: import json
  import os
  import tempfile
  import unittest
  from mmocr.utils import check_integrity, get_md5, is_archive, list_files, list_from_file, list_to_file
label_desc: Use image node_id 2 for calling the TestIsArchive obj's underlying member method code with example usage: obj.test_is_archive() without return types