Some tweaks to the demo (#65623)

Co-authored-by: Franck Nijhof <git@frenck.dev>

homeassistant/components/demo/alarm_control_panel.py

@@ -33,7 +33,7 @@ async def async_setup_platform(
         [
             ManualAlarm(
                 hass,
-                "Alarm",
+                "Security",
                 "1234",
                 None,
                 True,

homeassistant/components/demo/media_player.py

@@ -1,7 +1,10 @@
 """Demo implementation of the media player."""
 from __future__ import annotations
 
-from homeassistant.components.media_player import MediaPlayerEntity
+from homeassistant.components.media_player import (
+    MediaPlayerDeviceClass,
+    MediaPlayerEntity,
+)
 from homeassistant.components.media_player.const import (
     MEDIA_TYPE_MOVIE,
     MEDIA_TYPE_MUSIC,
@@ -68,8 +71,8 @@ async def async_setup_entry(
     await async_setup_platform(hass, {}, async_add_entities)
 
 
-SOUND_MODE_LIST = ["Dummy Music", "Dummy Movie"]
-DEFAULT_SOUND_MODE = "Dummy Music"
+SOUND_MODE_LIST = ["Music", "Movie"]
+DEFAULT_SOUND_MODE = "Music"
 
 YOUTUBE_PLAYER_SUPPORT = (
     SUPPORT_PAUSE
@@ -449,6 +452,8 @@ class DemoTVShowPlayer(AbstractDemoPlayer):
 
     # We only implement the methods that we support
 
+    _attr_device_class = MediaPlayerDeviceClass.TV
+
     def __init__(self):
         """Initialize the demo device."""
         super().__init__("Lounge room")

tests/components/google_assistant/__init__.py

@@ -383,8 +383,8 @@ DEMO_DEVICES = [
         "willReportState": False,
     },
     {
-        "id": "alarm_control_panel.alarm",
-        "name": {"name": "Alarm"},
+        "id": "alarm_control_panel.security",
+        "name": {"name": "Security"},
         "traits": ["action.devices.traits.ArmDisarm"],
         "type": "action.devices.types.SECURITYSYSTEM",
         "willReportState": False,