Add unique ID support to light, cover and media player groups (#53225)

tests/components/group/test_light.py

@@ -44,6 +44,7 @@ from homeassistant.const import (
     STATE_ON,
     STATE_UNAVAILABLE,
 )
+from homeassistant.helpers import entity_registry as er
 from homeassistant.setup import async_setup_component
 
 
@@ -58,6 +59,7 @@ async def test_default_state(hass):
                 "platform": DOMAIN,
                 "entities": ["light.kitchen", "light.bedroom"],
                 "name": "Bedroom Group",
+                "unique_id": "unique_identifier",
             }
         },
     )
@@ -77,6 +79,11 @@ async def test_default_state(hass):
     assert state.attributes.get(ATTR_EFFECT_LIST) is None
     assert state.attributes.get(ATTR_EFFECT) is None
 
+    entity_registry = er.async_get(hass)
+    entry = entity_registry.async_get("light.bedroom_group")
+    assert entry
+    assert entry.unique_id == "unique_identifier"
+
 
 async def test_state_reporting(hass):
     """Test the state reporting."""
@@ -1064,7 +1071,7 @@ async def test_invalid_service_calls(hass):
     """Test invalid service call arguments get discarded."""
     add_entities = MagicMock()
     await group.async_setup_platform(
-        hass, {"entities": ["light.test1", "light.test2"]}, add_entities
+        hass, {"name": "test", "entities": ["light.test1", "light.test2"]}, add_entities
     )
     await hass.async_block_till_done()
     await hass.async_start()