code: def test_get_random_returns_statement(self):
      text = "New statement"
      self.adapter.create(text=text)
      random_statement = self.adapter.get_random()
  
      self.assertEqual(random_statement.text, text)
  
imports: from unittest import TestCase
  from chatterbot.storage import MongoDatabaseAdapter
  from chatterbot.conversation import Statement
label_desc: Use image node_id 7 for calling the MongoDatabaseAdapterTestCase obj's underlying member method code with example usage: obj.test_get_random_returns_statement() without return types