old_contents: import os
  
  import vcr_unittest
  
  from app.messenger import messaging
  
  
  class MessagingTestCase(vcr_unittest.VCRTestCase):
      
      def setUp(self):
          self.access_token = os.environ['ACCESS_TOKEN']
          self.user_id = '100011269503253'
  
      def test_send_main_menu(self):
          response = messaging.send_main_menu(self.access_token, self.user_id)
          self.assertTrue('recipient_id' in response)
          self.assertTrue('message_id' in response)
          self.assertEqual(response['recipient_id'], self.user_id)
  
new_contents: import os
  
  import vcr_unittest
  
  from app.messenger import messaging
  
  
  class MessagingTestCase(vcr_unittest.VCRTestCase):
      
      def setUp(self):
          self.access_token = os.environ['ACCESS_TOKEN']
          self.user_id = '474276666029691'
  
      def test_send_main_menu(self):
          response = messaging.send_main_menu(self.access_token, self.user_id)
          self.assertTrue('recipient_id' in response)
          self.assertTrue('message_id' in response)
          self.assertEqual(response['recipient_id'], self.user_id)
  
subject: Replace test user_id with a correct one