<s> from unittest import TestCase <EOL> from chatterbot . conversation import Response , Signature <EOL> class ResponseTests ( TestCase ) : <EOL> def setUp ( self ) : <EOL> self . response = Response ( "<STR_LIT>" ) <EOL> def test_add_signature ( self ) : <EOL> signature = Signature ( "<STR_LIT>" ) <EOL> self . response . add_signature ( signature ) <EOL> self . assertIn ( signature , self . response . signatures ) </s>
