Do not restore light group external state attributes (#70)

tests/test_light.py

@@ -798,6 +798,21 @@ async def test_zha_group_light_entity(
  # test that the lights were created and are off
  assert bool(entity.state["on"]) is False
 
+ # Group entities do not support state restoration
+ entity.restore_external_state_attributes(
+ state=True,
+ off_with_transition=False,
+ off_brightness=12,
+ brightness=34,
+ color_temp=500,
+ xy_color=(1, 2),
+ hs_color=(3, 4),
+ color_mode=ColorMode.XY,
+ effect="colorloop",
+ )
+
+ assert bool(entity.state["on"]) is False
+
  # test turning the lights on and off from the client
  await async_test_on_off_from_client(zha_gateway, group_cluster_on_off, entity)
  await _async_shift_time(zha_gateway)

zha/application/platforms/light/__init__.py

@@ -1394,3 +1394,19 @@ def _make_members_assume_group_state(
 
  for platform_entity in self.group.get_platform_entities(Light.PLATFORM):
  platform_entity._assume_group_state(update_params)
+
+ def restore_external_state_attributes(
+ self,
+ *,
+ state: bool | None,
+ off_with_transition: bool | None,
+ off_brightness: int | None,
+ brightness: int | None,
+ color_temp: int | None,
+ xy_color: tuple[float, float] | None,
+ hs_color: tuple[float, float] | None,
+ color_mode: ColorMode | None,
+ effect: str | None,
+ ) -> None:
+ """Restore extra state attributes."""
+ # Groups do not restore external state attributes