diff --git a/zulip_botserver/tests/server_test_lib.py b/zulip_botserver/tests/server_test_lib.py
index 2fb3538..8823772 100644
--- a/zulip_botserver/tests/server_test_lib.py
+++ b/zulip_botserver/tests/server_test_lib.py
@@ -21,6 +21,7 @@ class BotServerTestCase(TestCase):
         bots_config: Optional[Dict[str, Dict[str, str]]]=None,
         bot_handlers: Optional[Dict[str, Any]]=None,
         event: Optional[Dict[str, Any]]=None,
+        expected_response: Optional[str]=None,
         check_success: bool=False,
         third_party_bot_conf: Optional[configparser.ConfigParser]=None,
     ) -> None:
@@ -36,6 +37,16 @@ class BotServerTestCase(TestCase):
 
         response = self.app.post(data=json.dumps(event))
 
+        # NOTE: Currently, assert_bot_server_response can only check the expected_response
+        # for bots that use send_reply. However, the vast majority of bots use send_reply.
+        # Therefore, the Botserver can be still be effectively tested.
+        bot_send_reply_call = mock_ExternalBotHandler.return_value.send_reply
+        if expected_response is not None:
+            self.assertTrue(bot_send_reply_call.called)
+            self.assertEqual(expected_response, bot_send_reply_call.call_args[0][1])
+        else:
+            self.assertFalse(bot_send_reply_call.called)
+
         if check_success:
             assert 200 <= response.status_code < 300
         else:
diff --git a/zulip_botserver/tests/test_server.py b/zulip_botserver/tests/test_server.py
index 95c3cd4..3ce2b42 100644
--- a/zulip_botserver/tests/test_server.py
+++ b/zulip_botserver/tests/test_server.py
@@ -32,6 +32,7 @@ class BotServerTests(BotServerTestCase):
                                         bots_config=bots_config,
                                         event=dict(message={'content': "test message"},
                                                    bot_email='helloworld-bot@zulip.com'),
+                                        expected_response="beep boop",
                                         check_success=True)
 
     def test_successful_request_from_two_bots(self) -> None:
@@ -51,6 +52,7 @@ class BotServerTests(BotServerTestCase):
         self.assert_bot_server_response(available_bots=available_bots,
                                         event=dict(message={'content': "test message"},
                                                    bot_email='helloworld-bot@zulip.com'),
+                                        expected_response="beep boop",
                                         bots_config=bots_config,
                                         check_success=True)