Fix device cleanup in plugwise (#126212)

tests/components/plugwise/test_init.py

@@ -3,6 +3,7 @@
 from datetime import timedelta
 from unittest.mock import MagicMock, patch
 
+from freezegun.api import FrozenDateTimeFactory
 from plugwise.exceptions import (
     ConnectionFailedError,
     InvalidAuthentication,
@@ -19,7 +20,6 @@ from homeassistant.const import Platform
 from homeassistant.core import HomeAssistant
 from homeassistant.helpers import device_registry as dr, entity_registry as er
 from homeassistant.setup import async_setup_component
-from homeassistant.util import dt as dt_util
 
 from tests.common import MockConfigEntry, async_fire_time_changed
 
@@ -231,9 +231,9 @@ async def test_update_device(
     mock_smile_adam_2: MagicMock,
     device_registry: dr.DeviceRegistry,
     entity_registry: er.EntityRegistry,
+    freezer: FrozenDateTimeFactory,
 ) -> None:
     """Test a clean-up of the device_registry."""
-    utcnow = dt_util.utcnow()
     data = mock_smile_adam_2.async_update.return_value
 
     mock_config_entry.add_to_hass(hass)
@@ -260,7 +260,8 @@ async def test_update_device(
     # Add a 2nd Tom/Floor
     data.devices.update(TOM)
     with patch(HA_PLUGWISE_SMILE_ASYNC_UPDATE, return_value=data):
-        async_fire_time_changed(hass, utcnow + timedelta(minutes=1))
+        freezer.tick(timedelta(minutes=1))
+        async_fire_time_changed(hass)
         await hass.async_block_till_done()
 
         assert (
@@ -287,7 +288,8 @@ async def test_update_device(
     # Remove the existing Tom/Floor
     data.devices.pop("1772a4ea304041adb83f357b751341ff")
     with patch(HA_PLUGWISE_SMILE_ASYNC_UPDATE, return_value=data):
-        async_fire_time_changed(hass, utcnow + timedelta(minutes=1))
+        freezer.tick(timedelta(minutes=1))
+        async_fire_time_changed(hass)
         await hass.async_block_till_done()
 
         assert (