Fix bug blocking superuser from adding Discord bot

allianceauth/services/modules/discord/managers.py

@@ -171,8 +171,15 @@ class DiscordUserManager(models.Manager):
     
     @classmethod
     def server_name(cls):
-        """returns the name of the Discord server"""        
+        """returns the name of the current Discord server 
-        return cls._bot_client().guild_name(DISCORD_GUILD_ID)
+        or an empty string if the name could not be retrieved
+        """
+        try:
+            server_name = cls._bot_client().guild_name(DISCORD_GUILD_ID)
+        except HTTPError:
+            server_name = ""
+
+        return server_name
 
     @staticmethod
     def _bot_client(is_rate_limited: bool = True):

allianceauth/services/modules/discord/tests/test_integration.py

@@ -474,3 +474,24 @@ class TestUserFeatures(WebTest):
                 
         expected = [remove_guild_member_request, guild_infos_request]
         self.assertListEqual(requests_made, expected)
+
+    @patch(MODULE_PATH + '.views.messages')
+    def test_user_add_new_server(self, requests_mocker, mock_messages): 
+        # guild_infos()
+        mock_exception = HTTPError('can not get guild info from Discord API')
+        mock_exception.response = Mock()
+        mock_exception.response.status_code = 440
+        requests_mocker.get(guild_infos_request.url, exc=mock_exception)
+        
+        # login
+        superuser = User.objects.create_superuser(
+            "admin", "admin@example.com", "admin123"
+        )
+        AuthUtils.add_main_character_2(superuser, "my_main", 1099)
+        self.app.set_user(superuser)
+        
+        # click deactivate on the service page
+        response = self.app.get(reverse('services:services'))
+        
+        # check we got can see the page
+        self.assertEqual(response.status_int, 200)

allianceauth/services/modules/discord/tests/test_managers.py

@@ -361,3 +361,26 @@ class TestUserHasAccount(TestCase):
 
     def test_return_false_if_not_called_with_user_object(self):                
         self.assertFalse(DiscordUser.objects.user_has_account('abc'))
+
+
+@patch(MODULE_PATH + '.managers.DiscordClient', spec=DiscordClient)
+class TestServerName(TestCase):
+
+    @classmethod
+    def setUpClass(cls):
+        super().setUpClass()
+        cls.user = AuthUtils.create_user(TEST_USER_NAME)
+    
+    def test_returns_name_when_api_returns_it(self, mock_DiscordClient):
+        server_name = "El Dorado"
+        mock_DiscordClient.return_value.guild_name.return_value = server_name
+
+        self.assertEqual(DiscordUser.objects.server_name(), server_name)
+
+    def test_returns_empty_string_when_api_throws_http_error(self, mock_DiscordClient):
+        mock_exception = HTTPError('Test exception')
+        mock_exception.response = Mock(**{"status_code": 440})        
+        mock_DiscordClient.return_value.guild_name.side_effect = mock_exception
+
+        self.assertEqual(DiscordUser.objects.server_name(), "")
+