Improve scene.create service (#28533)

* Improve scene.create service

* Typo

* Improve coverage

* Add from_yaml attribute

* from_service instead of from_yaml

homeassistant/components/homeassistant/scene.py

@@ -141,11 +141,13 @@ async def async_setup_platform(hass, config, async_add_entities, discovery_info=
         """Create a scene."""
         scene_config = SCENECONFIG(call.data[CONF_SCENE_ID], call.data[CONF_ENTITIES])
         entity_id = f"{SCENE_DOMAIN}.{scene_config.name}"
-        if hass.states.get(entity_id) is not None:
+        old = platform.entities.get(entity_id)
+        if old is not None:
+            if not old.from_service:
                 _LOGGER.warning("The scene %s already exists", entity_id)
                 return
-
-        async_add_entities([HomeAssistantScene(hass, scene_config)])
+            await platform.async_remove_entity(entity_id)
+        async_add_entities([HomeAssistantScene(hass, scene_config, from_service=True)])
 
     hass.services.async_register(
         SCENE_DOMAIN, SERVICE_CREATE, create_service, CREATE_SCENE_SCHEMA
@@ -173,11 +175,12 @@ def _process_scenes_config(hass, async_add_entities, config):
 class HomeAssistantScene(Scene):
     """A scene is a group of entities and the states we want them to be."""
 
-    def __init__(self, hass, scene_config, scene_id=None):
+    def __init__(self, hass, scene_config, scene_id=None, from_service=False):
         """Initialize the scene."""
         self._id = scene_id
         self.hass = hass
         self.scene_config = scene_config
+        self.from_service = from_service
 
     @property
     def name(self):

tests/components/homeassistant/test_scene.py

@@ -55,8 +55,13 @@ async def test_apply_service(hass):
 
 async def test_create_service(hass, caplog):
     """Test the create service."""
-    assert await async_setup_component(hass, "scene", {})
+    assert await async_setup_component(
+        hass,
+        "scene",
+        {"scene": {"name": "hallo_2", "entities": {"light.kitchen": "on"}}},
+    )
     assert hass.states.get("scene.hallo") is None
+    assert hass.states.get("scene.hallo_2") is not None
 
     assert await hass.services.async_call(
         "scene",
@@ -67,8 +72,8 @@ async def test_create_service(hass, caplog):
         },
         blocking=True,
     )
-
     await hass.async_block_till_done()
+
     scene = hass.states.get("scene.hallo")
     assert scene is not None
     assert scene.domain == "scene"
@@ -81,12 +86,34 @@ async def test_create_service(hass, caplog):
         "create",
         {
             "scene_id": "hallo",
+            "entities": {"light.kitchen_light": {"state": "on", "brightness": 100}},
+        },
+        blocking=True,
+    )
+    await hass.async_block_till_done()
+
+    scene = hass.states.get("scene.hallo")
+    assert scene is not None
+    assert scene.domain == "scene"
+    assert scene.name == "hallo"
+    assert scene.state == "scening"
+    assert scene.attributes.get("entity_id") == ["light.kitchen_light"]
+
+    assert await hass.services.async_call(
+        "scene",
+        "create",
+        {
+            "scene_id": "hallo_2",
             "entities": {"light.bed_light": {"state": "on", "brightness": 50}},
         },
         blocking=True,
     )
-
     await hass.async_block_till_done()
-    assert "The scene scene.hallo already exists" in caplog.text
-    assert hass.states.get("scene.hallo") is not None
-    assert hass.states.get("scene.hallo_2") is None
+
+    assert "The scene scene.hallo_2 already exists" in caplog.text
+    scene = hass.states.get("scene.hallo_2")
+    assert scene is not None
+    assert scene.domain == "scene"
+    assert scene.name == "hallo_2"
+    assert scene.state == "scening"
+    assert scene.attributes.get("entity_id") == ["light.kitchen"]