Fix WLED light transition (#30490)

homeassistant/components/wled/light.py

@@ -143,8 +143,13 @@ class WLEDLight(Light, WLEDDeviceEntity):
 
     async def async_turn_off(self, **kwargs: Any) -> None:
         """Turn off the light."""
+        data = {ATTR_ON: False, ATTR_SEGMENT_ID: self._segment}
+
+        if ATTR_TRANSITION in kwargs:
+            data[ATTR_TRANSITION] = kwargs[ATTR_TRANSITION] * 1000
+
         try:
-            await self.wled.light(on=False)
+            await self.wled.light(**data)
             self._state = False
         except WLEDError:
             _LOGGER.error("An error occurred while turning off WLED light.")
@@ -168,7 +173,7 @@ class WLEDLight(Light, WLEDDeviceEntity):
             data[ATTR_COLOR_PRIMARY] = color_util.color_hsv_to_RGB(hue, sat, 100)
 
         if ATTR_TRANSITION in kwargs:
-            data[ATTR_TRANSITION] = kwargs[ATTR_TRANSITION]
+            data[ATTR_TRANSITION] = kwargs[ATTR_TRANSITION] * 1000
 
         if ATTR_BRIGHTNESS in kwargs:
             data[ATTR_BRIGHTNESS] = kwargs[ATTR_BRIGHTNESS]

tests/components/wled/test_light.py

@@ -90,7 +90,7 @@ async def test_switch_change_state(
     await hass.services.async_call(
         LIGHT_DOMAIN,
         SERVICE_TURN_OFF,
-        {ATTR_ENTITY_ID: "light.wled_rgb_light"},
+        {ATTR_ENTITY_ID: "light.wled_rgb_light", ATTR_TRANSITION: 5},
         blocking=True,
     )
     await hass.async_block_till_done()