Fix the order of the group members attribute of the Music Assistant integration (#140204)

homeassistant/components/music_assistant/media_player.py

@@ -276,22 +276,26 @@ class MusicAssistantPlayer(MusicAssistantEntity, MediaPlayerEntity):
             self._attr_state = MediaPlayerState(player.state.value)
         else:
             self._attr_state = MediaPlayerState(STATE_OFF)
-        group_members_entity_ids: list[str] = []
+
+        group_members: list[str] = []
         if player.group_childs:
+            group_members = player.group_childs
+        elif player.synced_to and (parent := self.mass.players.get(player.synced_to)):
+            group_members = parent.group_childs
+
         # translate MA group_childs to HA group_members as entity id's
         entity_registry = er.async_get(self.hass)
-            group_members_entity_ids = [
+        group_members_entity_ids: list[str] = [
             entity_id
-                for child_id in player.group_childs
+            for child_id in group_members
             if (
                 entity_id := entity_registry.async_get_entity_id(
                     self.platform.domain, DOMAIN, child_id
                 )
             )
         ]
-        # NOTE: we sort the group_members for now,
-        # until the MA API returns them sorted (group_childs is now a set)
-        self._attr_group_members = sorted(group_members_entity_ids)
+
+        self._attr_group_members = group_members_entity_ids
         self._attr_volume_level = (
             player.volume_level / 100 if player.volume_level is not None else None
         )

tests/components/music_assistant/snapshots/test_media_player.ambr

@@ -109,8 +109,8 @@
       'entity_picture_local': None,
       'friendly_name': 'Test Group Player 1',
       'group_members': list([
-        'media_player.my_super_test_player_2',
         'media_player.test_player_1',
+        'media_player.my_super_test_player_2',
       ]),
       'icon': 'mdi:speaker-multiple',
       'is_volume_muted': False,