class_docstr: Tests to make sure that logic adapters
  function correctly when using Django.
code: def test_mathematical_evaluation(self):
      from chatterbot.logic import MathematicalEvaluation
  
      adapter = MathematicalEvaluation(self.chatbot)
  
      statement = Statement(text="What is 6 + 6?")
  
      response = adapter.process(statement)
  
      self.assertEqual(response.text, "6 + 6 = 12")
      self.assertEqual(response.confidence, 1)
  
imports: from tests_django.base_case import ChatterBotTestCase
  from chatterbot.conversation import Statement
label_desc: Use image node_id 3 for calling the LogicIntegrationTestCase obj's underlying member method code with example usage: obj.test_mathematical_evaluation() without return types