class_docstr: Tests for the update function of the storage adapter.
class_docstr_tok: ["Tests","for","the","update","function","of","the","storage","adapter","."]
code: def test_update_adds_tags(self):
      statement = self.adapter.create(text="Testing")
      statement.add_tags("a", "b")
      self.adapter.update(statement)
  
      statements = list(self.adapter.filter())
  
      self.assertEqual(len(statements), 1)
      self.assertIn("a", statements[0].get_tags())
      self.assertIn("b", statements[0].get_tags())
  
imports: from django.test import TestCase
  from chatterbot.storage import DjangoStorageAdapter
  from chatterbot.conversation import Statement
  from chatterbot.ext.django_chatterbot.models import Statement
label_desc: Use image node_id 1 for calling the StorageAdapterUpdateTests obj's underlying member method code with example usage: obj.test_update_adds_tags() without return types