From 2ffcc70544f2fddd2f1ba3a7db2b217b3e41fb11 Mon Sep 17 00:00:00 2001
From: Petro31 <35082313+Petro31@users.noreply.github.com>
Date: Mon, 15 Jun 2026 05:19:55 -0400
Subject: [PATCH] Add brightness_pct to set_level action (#173285)

---
 homeassistant/components/template/light.py |  4 +++-
 tests/components/template/test_light.py    | 18 +++++++++++++-----
 2 files changed, 16 insertions(+), 6 deletions(-)

diff --git a/homeassistant/components/template/light.py b/homeassistant/components/template/light.py
index 41ce19a0e44..31b0da63355 100644
--- a/homeassistant/components/template/light.py
+++ b/homeassistant/components/template/light.py
@@ -519,7 +519,9 @@ class AbstractTemplateLight(AbstractTemplateEntity, LightEntity):
         common_params = {}
 
         if ATTR_BRIGHTNESS in kwargs:
-            common_params["brightness"] = kwargs[ATTR_BRIGHTNESS]
+            brightness = kwargs[ATTR_BRIGHTNESS]
+            common_params["brightness"] = brightness
+            common_params["brightness_pct"] = round(brightness / 255 * 100)
 
         if ATTR_TRANSITION in kwargs and self._supports_transition is True:
             common_params["transition"] = kwargs[ATTR_TRANSITION]
diff --git a/tests/components/template/test_light.py b/tests/components/template/test_light.py
index d5a7c892e6c..3cf6ed61cd0 100644
--- a/tests/components/template/test_light.py
+++ b/tests/components/template/test_light.py
@@ -8,6 +8,7 @@ from syrupy.assertion import SnapshotAssertion
 from homeassistant.components import light, template
 from homeassistant.components.light import (
     ATTR_BRIGHTNESS,
+    ATTR_BRIGHTNESS_PCT,
     ATTR_COLOR_TEMP_KELVIN,
     ATTR_EFFECT,
     ATTR_HS_COLOR,
@@ -67,7 +68,10 @@ ON_OFF_ACTIONS = {
 }
 
 
-BRIGHTNESS_DATA = {"brightness": "{{ brightness }}"}
+BRIGHTNESS_DATA = {
+    "brightness": "{{ brightness }}",
+    "brightness_pct": "{{ brightness_pct }}",
+}
 SET_LEVEL_ACTION = make_test_action("set_level", BRIGHTNESS_DATA)
 ON_OFF_SET_LEVEL_ACTIONS = {
     **ON_OFF_ACTIONS,
@@ -670,9 +674,13 @@ async def test_off_action_optimistic(
     "style",
     [ConfigurationStyle.MODERN, ConfigurationStyle.TRIGGER],
 )
+@pytest.mark.parametrize(
+    ("brightness", "brightness_pct"),
+    [(2, 1), (255, 100), (124, 49), (1, 0), (254, 100)],
+)
 @pytest.mark.usefixtures("setup_state_light")
 async def test_level_action_no_template(
-    hass: HomeAssistant, calls: list[ServiceCall]
+    hass: HomeAssistant, brightness: int, brightness_pct: int, calls: list[ServiceCall]
 ) -> None:
     """Test setting brightness with optimistic template."""
     state = hass.states.get(TEST_LIGHT.entity_id)
@@ -682,14 +690,14 @@ async def test_level_action_no_template(
         hass,
         calls,
         SERVICE_TURN_ON,
-        {ATTR_BRIGHTNESS: 124},
-        {ATTR_BRIGHTNESS: 124},
+        {ATTR_BRIGHTNESS: brightness},
+        {ATTR_BRIGHTNESS: brightness, ATTR_BRIGHTNESS_PCT: brightness_pct},
         "set_level",
     )
 
     state = hass.states.get(TEST_LIGHT.entity_id)
     assert state.state == STATE_ON
-    assert state.attributes["brightness"] == 124
+    assert state.attributes["brightness"] == brightness
     assert state.attributes["color_mode"] == ColorMode.BRIGHTNESS
     assert state.attributes["supported_color_modes"] == [ColorMode.BRIGHTNESS]
     assert state.attributes["supported_features"] == 0