smartbulb: Limit brightness range to 1-100 (#829)

The allowed brightness for tested light devices (L530, L900) is [1-100]
instead of [0-100] like it was for some kasa devices.

kasa/smart/smartbulb.py

@@ -28,8 +28,7 @@ class SmartBulb(SmartDevice, Bulb):
     @property
     def is_dimmable(self) -> bool:
         """Whether the bulb supports brightness changes."""
-        # TODO: this makes an assumption that only dimmables report this
+        return "Brightness" in self.modules
-        return "brightness" in self._info
 
     @property
     def is_variable_color_temp(self) -> bool:
@@ -188,6 +187,11 @@ class SmartBulb(SmartDevice, Bulb):
 
         return await self.protocol.query({"set_device_info": {"color_temp": temp}})
 
+    def _raise_for_invalid_brightness(self, value: int):
+        """Raise error on invalid brightness value."""
+        if not isinstance(value, int) or not (1 <= value <= 100):
+            raise ValueError(f"Invalid brightness value: {value} (valid range: 1-100%)")
+
     async def set_brightness(
         self, brightness: int, *, transition: Optional[int] = None
     ) -> Dict:
@@ -201,25 +205,12 @@ class SmartBulb(SmartDevice, Bulb):
         if not self.is_dimmable:  # pragma: no cover
             raise KasaException("Bulb is not dimmable.")
 
+        self._raise_for_invalid_brightness(brightness)
+
         return await self.protocol.query(
             {"set_device_info": {"brightness": brightness}}
         )
 
-    # Default state information, should be made to settings
-    """
-    "info": {
-        "default_states": {
-        "re_power_type": "always_on",
-        "type": "last_states",
-        "state": {
-            "brightness": 36,
-            "hue": 0,
-            "saturation": 0,
-            "color_temp": 2700,
-        },
-    },
-    """
-
     async def set_effect(
         self,
         effect: str,
@@ -229,15 +220,6 @@ class SmartBulb(SmartDevice, Bulb):
     ) -> None:
         """Set an effect on the device."""
         raise NotImplementedError()
-        # TODO: the code below does to activate the effect but gives no error
-        return await self.protocol.query(
-            {
-                "set_device_info": {
-                    "dynamic_light_effect_enable": 1,
-                    "dynamic_light_effect_id": effect,
-                }
-            }
-        )
 
     @property
     def presets(self) -> List[BulbPreset]:

kasa/tests/smart/features/test_brightness.py

@@ -16,7 +16,7 @@ async def test_brightness_component(dev: SmartDevice):
     # Test getting the value
     feature = dev.features["brightness"]
     assert isinstance(feature.value, int)
-    assert feature.value > 0 and feature.value <= 100
+    assert feature.value > 1 and feature.value <= 100
 
     # Test setting the value
     await feature.set_value(10)

kasa/tests/test_smartdevice.py

@@ -8,9 +8,10 @@ from pytest_mock import MockerFixture
 
 from kasa import KasaException
 from kasa.exceptions import SmartErrorCode
-from kasa.smart import SmartDevice
+from kasa.smart import SmartBulb, SmartDevice
 
 from .conftest import (
+    bulb_smart,
     device_smart,
 )
 
@@ -103,3 +104,25 @@ async def test_update_module_queries(dev: SmartDevice, mocker: MockerFixture):
         full_query = {**full_query, **mod.query()}
 
     query.assert_called_with(full_query)
+
+
+@bulb_smart
+async def test_smartdevice_brightness(dev: SmartBulb):
+    """Test brightness setter and getter."""
+    assert isinstance(dev, SmartDevice)
+    assert "brightness" in dev._components
+
+    # Test getting the value
+    feature = dev.features["brightness"]
+    assert feature.minimum_value == 1
+    assert feature.maximum_value == 100
+
+    await dev.set_brightness(10)
+    await dev.update()
+    assert dev.brightness == 10
+
+    with pytest.raises(ValueError):
+        await dev.set_brightness(feature.minimum_value - 10)
+
+    with pytest.raises(ValueError):
+        await dev.set_brightness(feature.maximum_value + 10)