Add play/pause functionality to vizio integration

Leverages existing pyvizio functionality. My impression is that it also
works for soundbars based on exiva/Vizio_SmartCast_API#19.

homeassistant/components/vizio/const.py

@@ -55,7 +55,9 @@
 }
 
 COMMON_SUPPORTED_COMMANDS = (
-    MediaPlayerEntityFeature.SELECT_SOURCE
+    MediaPlayerEntityFeature.PAUSE
+    | MediaPlayerEntityFeature.PLAY
+    | MediaPlayerEntityFeature.SELECT_SOURCE
     | MediaPlayerEntityFeature.TURN_ON
     | MediaPlayerEntityFeature.TURN_OFF
     | MediaPlayerEntityFeature.VOLUME_MUTE

homeassistant/components/vizio/media_player.py

@@ -470,3 +470,11 @@ async def async_set_volume_level(self, volume: float) -> None:
                 num = int(self._max_volume * (self._attr_volume_level - volume))
                 await self._device.vol_down(num=num, log_api_exception=False)
                 self._attr_volume_level = volume
+
+    async def async_media_play(self) -> None:
+        """Play whatever media is currently active."""
+        await self._device.play(log_api_exception=False)
+
+    async def async_media_pause(self) -> None:
+        """Pause whatever media is currently active."""
+        await self._device.pause(log_api_exception=False)

tests/components/vizio/test_media_player.py

@@ -27,6 +27,8 @@
     ATTR_SOUND_MODE,
     DOMAIN as MP_DOMAIN,
     SERVICE_MEDIA_NEXT_TRACK,
+    SERVICE_MEDIA_PAUSE,
+    SERVICE_MEDIA_PLAY,
     SERVICE_MEDIA_PREVIOUS_TRACK,
     SERVICE_SELECT_SOUND_MODE,
     SERVICE_SELECT_SOURCE,
@@ -438,6 +440,8 @@ async def test_services(
         "eq",
         "Music",
     )
+    await _test_service(hass, MP_DOMAIN, "play", SERVICE_MEDIA_PLAY, None)
+    await _test_service(hass, MP_DOMAIN, "pause", SERVICE_MEDIA_PAUSE, None)
 
 
 async def test_options_update(