zulip_botserver: Remove unused imports and do some other cleanup.

zulip_botserver/tests/server_test_lib.py

@@ -1,14 +1,15 @@
-from unittest import TestCase
-import zulip_botserver.server
 import json
-from typing import Any, List, Dict, Mapping, Optional
+
+from typing import Any, List, Dict, Optional
+from unittest import TestCase
+from zulip_botserver import server
 
 class BotServerTestCase(TestCase):
 
     def setUp(self):
         # type: () -> None
-        zulip_botserver.server.app.testing = True
-        self.app = zulip_botserver.server.app.test_client()
+        server.app.testing = True
+        self.app = server.app.test_client()
 
     def assert_bot_server_response(self,
                                    available_bots=None,
@@ -21,14 +22,14 @@ class BotServerTestCase(TestCase):
                                    ):
         # type: (Optional[List[str]], Optional[Dict[str, Any]], Optional[Dict[str, Any]], Optional[Dict[str, Any]], str, Dict[str, Dict[str, Any]], bool) -> None
         if available_bots is not None:
-            zulip_botserver.server.available_bots = available_bots
-            zulip_botserver.server.bots_config = bots_config  # type: ignore # monkey-patching
-            zulip_botserver.server.load_lib_modules()
-            zulip_botserver.server.load_bot_handlers()
+            server.available_bots = available_bots
+            server.bots_config = bots_config  # type: ignore # monkey-patching
+            server.load_lib_modules()
+            server.load_bot_handlers()
 
         response = self.app.post(payload_url, data=json.dumps(message))
 
         if check_success:
-            assert response.status_code >= 200 and response.status_code < 300
+            assert 200 <= response.status_code < 300
         else:
-            assert response.status_code >= 400 and response.status_code < 500
+            assert 400 <= response.status_code < 500

zulip_botserver/tests/test_server.py

@@ -2,7 +2,6 @@ from __future__ import absolute_import
 import mock
 import unittest
 from typing import Any
-from zulip_botserver import server
 from .server_test_lib import BotServerTestCase
 import six