Convert Hue scenes brightness to 0..255 (home-assistant#105871)

Co-authored-by: Franck Nijhof <[email protected]>

homeassistant/components/hue/scene.py

@@ -177,6 +177,9 @@ def extra_state_attributes(self) -> dict[str, Any] | None:
                 if action.action.dimming:
                     brightness = action.action.dimming.brightness
                     break
+        if brightness is not None:
+            # Hue uses a range of [0, 100] to control brightness.
+            brightness = round((brightness / 100) * 255)
         return {
             "group_name": self.group.metadata.name,
             "group_type": self.group.type.value,

tests/components/hue/test_scene.py

@@ -35,7 +35,7 @@ async def test_scene(
     assert test_entity.attributes["group_type"] == "zone"
     assert test_entity.attributes["name"] == "Dynamic Test Scene"
     assert test_entity.attributes["speed"] == 0.6269841194152832
-    assert test_entity.attributes["brightness"] == 46.85
+    assert test_entity.attributes["brightness"] == 119
     assert test_entity.attributes["is_dynamic"] is True
 
     # test (regular) scene for a hue room
@@ -47,7 +47,7 @@ async def test_scene(
     assert test_entity.attributes["group_type"] == "room"
     assert test_entity.attributes["name"] == "Regular Test Scene"
     assert test_entity.attributes["speed"] == 0.5
-    assert test_entity.attributes["brightness"] == 100.0
+    assert test_entity.attributes["brightness"] == 255
     assert test_entity.attributes["is_dynamic"] is False
 
     # test smart scene
@@ -170,7 +170,7 @@ async def test_scene_updates(
     assert test_entity is not None
     assert test_entity.state == STATE_UNKNOWN
     assert test_entity.name == "Test Room Mocked Scene"
-    assert test_entity.attributes["brightness"] == 65.0
+    assert test_entity.attributes["brightness"] == 166
 
     # test update
     updated_resource = {**FAKE_SCENE}
@@ -179,7 +179,7 @@ async def test_scene_updates(
     await hass.async_block_till_done()
     test_entity = hass.states.get(test_entity_id)
     assert test_entity is not None
-    assert test_entity.attributes["brightness"] == 35.0
+    assert test_entity.attributes["brightness"] == 89
 
     # # test entity name changes on group name change
     mock_bridge_v2.api.emit_event(