Fix target ID assignment in Channel permissions and add guild_id to test Channel class

disagreement/models.py

@@ -985,7 +985,7 @@ class Channel:
         """Return the :class:`PermissionOverwrite` for ``target`` if present."""
 
         if isinstance(target, str):
-            target_id = int(target)
+            target_id = target
         else:
             target_id = target.id
         for overwrite in self.permission_overwrites:

tests/test_command_checks.py

@@ -61,6 +61,7 @@ async def test_requires_permissions_pass(message):
     class Channel:
         def __init__(self, perms):
             self.perms = perms
+            self.guild_id = "g"
 
         def permissions_for(self, member):
             return self.perms
@@ -88,6 +89,7 @@ async def test_requires_permissions_fail(message):
     class Channel:
         def __init__(self, perms):
             self.perms = perms
+            self.guild_id = "g"
 
         def permissions_for(self, member):
             return self.perms