user_storage: handle edge case when user is not in guilds

litecord/blueprints/users.py

@@ -495,7 +495,7 @@ async def _del_from_table(table: str, user_id: int):
 @bp.route('/@me/delete', methods=['POST'])
 async def delete_account():
     """Delete own account.
-    
+
     This removes the account from all tables and
     forces all currently connected clients to reconnect.
     """

litecord/user_storage.py

@@ -291,6 +291,16 @@ class UserStorage:
     async def get_mutual_guilds(self, user_id: int, peer_id: int) -> List[int]:
         """Get a list of guilds two separate users
         have in common."""
+        if user_id == peer_id:
+            # if we are trying to query the mutual guilds with ourselves, we
+            # only need to give the list of guilds we are on.
+
+            # doing the INTERSECT has some edge-cases that can fuck up testing,
+            # such as a user querying its own profile card while they are
+            # not in any guilds.
+
+            return await self.get_user_guilds(user_id) or [0]
+
         mutual_guilds = await self.db.fetch("""
         SELECT guild_id FROM members WHERE user_id = $1
         INTERSECT