Use snapshot in devolo_home_network update tests (#101442)

tests/components/devolo_home_network/snapshots/test_update.ambr

@@ -0,0 +1,54 @@
+# serializer version: 1
+# name: test_update_firmware
+  StateSnapshot({
+    'attributes': ReadOnlyDict({
+      'auto_update': False,
+      'device_class': 'firmware',
+      'entity_picture': 'https://brands.home-assistant.io/_/devolo_home_network/icon.png',
+      'friendly_name': 'Mock Title Firmware',
+      'in_progress': False,
+      'installed_version': '5.6.1',
+      'latest_version': '5.6.2',
+      'release_summary': None,
+      'release_url': None,
+      'skipped_version': None,
+      'supported_features': <UpdateEntityFeature: 5>,
+      'title': None,
+    }),
+    'context': <ANY>,
+    'entity_id': 'update.mock_title_firmware',
+    'last_changed': <ANY>,
+    'last_updated': <ANY>,
+    'state': 'on',
+  })
+# ---
+# name: test_update_firmware.1
+  EntityRegistryEntrySnapshot({
+    'aliases': set({
+    }),
+    'area_id': None,
+    'capabilities': None,
+    'config_entry_id': <ANY>,
+    'device_class': None,
+    'device_id': <ANY>,
+    'disabled_by': None,
+    'domain': 'update',
+    'entity_category': <EntityCategory.CONFIG: 'config'>,
+    'entity_id': 'update.mock_title_firmware',
+    'has_entity_name': True,
+    'hidden_by': None,
+    'icon': None,
+    'id': <ANY>,
+    'name': None,
+    'options': dict({
+    }),
+    'original_device_class': <UpdateDeviceClass.FIRMWARE: 'firmware'>,
+    'original_icon': None,
+    'original_name': 'Firmware',
+    'platform': 'devolo_home_network',
+    'supported_features': <UpdateEntityFeature: 5>,
+    'translation_key': 'regular_firmware',
+    'unique_id': '1234567890_regular_firmware',
+    'unit_of_measurement': None,
+  })
+# ---

tests/components/devolo_home_network/test_update.py

@@ -3,25 +3,20 @@ from devolo_plc_api.device_api import UPDATE_NOT_AVAILABLE, UpdateFirmwareCheck
 from devolo_plc_api.exceptions.device import DevicePasswordProtected, DeviceUnavailable
 from freezegun.api import FrozenDateTimeFactory
 import pytest
+from syrupy.assertion import SnapshotAssertion
 
 from homeassistant.components.devolo_home_network.const import (
     DOMAIN,
     FIRMWARE_UPDATE_INTERVAL,
 )
-from homeassistant.components.update import (
+from homeassistant.components.update import DOMAIN as PLATFORM, SERVICE_INSTALL
-    DOMAIN as PLATFORM,
-    SERVICE_INSTALL,
-    UpdateDeviceClass,
-)
 from homeassistant.config_entries import SOURCE_REAUTH
-from homeassistant.const import ATTR_ENTITY_ID, STATE_OFF, STATE_ON, STATE_UNAVAILABLE
+from homeassistant.const import ATTR_ENTITY_ID, STATE_OFF, STATE_UNAVAILABLE
 from homeassistant.core import HomeAssistant
 from homeassistant.exceptions import HomeAssistantError
 from homeassistant.helpers import entity_registry as er
-from homeassistant.helpers.entity import EntityCategory
 
 from . import configure_integration
-from .const import FIRMWARE_UPDATE_AVAILABLE
 from .mock import MockDevice
 
 from tests.common import async_fire_time_changed
@@ -45,6 +40,7 @@ async def test_update_firmware(
     mock_device: MockDevice,
     entity_registry: er.EntityRegistry,
     freezer: FrozenDateTimeFactory,
+    snapshot: SnapshotAssertion,
 ) -> None:
     """Test updating a device."""
     entry = configure_integration(hass)
@@ -54,17 +50,8 @@ async def test_update_firmware(
     await hass.config_entries.async_setup(entry.entry_id)
     await hass.async_block_till_done()
 
-    state = hass.states.get(state_key)
+    assert hass.states.get(state_key) == snapshot
-    assert state is not None
+    assert entity_registry.async_get(state_key) == snapshot
-    assert state.state == STATE_ON
-    assert state.attributes["device_class"] == UpdateDeviceClass.FIRMWARE
-    assert state.attributes["installed_version"] == mock_device.firmware_version
-    assert (
-        state.attributes["latest_version"]
-        == FIRMWARE_UPDATE_AVAILABLE.new_firmware_version.split("_")[0]
-    )
-
-    assert entity_registry.async_get(state_key).entity_category == EntityCategory.CONFIG
 
     await hass.services.async_call(
         PLATFORM,