Add flake8-pytest-style (PT) for ruff (#1105)

This will catch common issues with pytest code.

* Use `match` when using `pytest.raises()` for base exception types like
`TypeError` or `ValueError`
* Use tuples for `parametrize()`
* Enforces `pytest.raises()` to contain simple statements, using `noqa`
to skip this on some cases for now.
* Fixes incorrect exception type (valueerror instead of typeerror) for
iotdimmer.
* Adds check valid types for `iotbulb.set_hsv` and `color` smart module.
* Consolidate exception messages for common interface modules.

kasa/iot/iotbulb.py

@@ -388,10 +388,14 @@ class IotBulb(IotDevice):
         if not self._is_color:
             raise KasaException("Bulb does not support color.")
 
-        if not isinstance(hue, int) or not (0 <= hue <= 360):
+        if not isinstance(hue, int):
+            raise TypeError("Hue must be an integer.")
+        if not (0 <= hue <= 360):
             raise ValueError(f"Invalid hue value: {hue} (valid range: 0-360)")
 
-        if not isinstance(saturation, int) or not (0 <= saturation <= 100):
+        if not isinstance(saturation, int):
+            raise TypeError("Saturation must be an integer.")
+        if not (0 <= saturation <= 100):
             raise ValueError(
                 f"Invalid saturation value: {saturation} (valid range: 0-100%)"
             )
@@ -445,7 +449,9 @@ class IotBulb(IotDevice):
         return await self._set_light_state(light_state, transition=transition)
 
     def _raise_for_invalid_brightness(self, value):
-        if not isinstance(value, int) or not (0 <= value <= 100):
+        if not isinstance(value, int):
+            raise TypeError("Brightness must be an integer")
+        if not (0 <= value <= 100):
             raise ValueError(f"Invalid brightness value: {value} (valid range: 0-100%)")
 
     @property  # type: ignore

kasa/iot/iotdimmer.py

@@ -118,7 +118,9 @@ class IotDimmer(IotPlug):
             )
 
         if not 0 <= brightness <= 100:
-            raise ValueError("Brightness value %s is not valid." % brightness)
+            raise ValueError(
+                f"Invalid brightness value: {brightness} (valid range: 0-100%)"
+            )
 
         # Dimmers do not support a brightness of 0, but bulbs do.
         # Coerce 0 to 1 to maintain the same interface between dimmers and bulbs.
@@ -161,20 +163,18 @@ class IotDimmer(IotPlug):
         A brightness value of 0 will turn off the dimmer.
         """
         if not isinstance(brightness, int):
-            raise ValueError(
-                "Brightness must be integer, " "not of %s.", type(brightness)
-            )
+            raise TypeError(f"Brightness must be an integer, not {type(brightness)}.")
 
         if not 0 <= brightness <= 100:
-            raise ValueError("Brightness value %s is not valid." % brightness)
+            raise ValueError(
+                f"Invalid brightness value: {brightness} (valid range: 0-100%)"
+            )
 
         # If zero set to 1 millisecond
         if transition == 0:
             transition = 1
         if not isinstance(transition, int):
-            raise ValueError(
-                "Transition must be integer, " "not of %s.", type(transition)
-            )
+            raise TypeError(f"Transition must be integer, not of {type(transition)}.")
         if transition <= 0:
             raise ValueError("Transition value %s is not valid." % transition)
 

kasa/smart/modules/color.py

@@ -51,10 +51,12 @@ class Color(SmartModule):
 
         return HSV(hue=h, saturation=s, value=v)
 
-    def _raise_for_invalid_brightness(self, value: int):
+    def _raise_for_invalid_brightness(self, value):
         """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%)")
+        if not isinstance(value, int):
+            raise TypeError("Brightness must be an integer")
+        if not (0 <= value <= 100):
+            raise ValueError(f"Invalid brightness value: {value} (valid range: 0-100%)")
 
     async def set_hsv(
         self,
@@ -73,10 +75,14 @@ class Color(SmartModule):
         :param int value: value in percentage [0, 100]
         :param int transition: transition in milliseconds.
         """
-        if not isinstance(hue, int) or not (0 <= hue <= 360):
+        if not isinstance(hue, int):
+            raise TypeError("Hue must be an integer")
+        if not (0 <= hue <= 360):
             raise ValueError(f"Invalid hue value: {hue} (valid range: 0-360)")
 
-        if not isinstance(saturation, int) or not (0 <= saturation <= 100):
+        if not isinstance(saturation, int):
+            raise TypeError("Saturation must be an integer")
+        if not (0 <= saturation <= 100):
             raise ValueError(
                 f"Invalid saturation value: {saturation} (valid range: 0-100%)"
             )

kasa/smart/modules/lighteffect.py

@@ -90,7 +90,7 @@ class LightEffect(SmartModule, SmartLightEffect):
         """
         if effect != self.LIGHT_EFFECTS_OFF and effect not in self._scenes_names_to_id:
             raise ValueError(
-                f"Cannot set light effect to {effect}, possible values "
+                f"The effect {effect} is not a built in effect. Possible values "
                 f"are: {self.LIGHT_EFFECTS_OFF} "
                 f"{' '.join(self._scenes_names_to_id.keys())}"
             )

kasa/tests/conftest.py

@@ -25,7 +25,7 @@ async def handle_turn_on(dev, turn_on):
         await dev.turn_off()
 
 
-@pytest.fixture
+@pytest.fixture()
 def dummy_protocol():
     """Return a smart protocol instance with a mocking-ready dummy transport."""
 

kasa/tests/discovery_fixtures.py

@@ -75,7 +75,7 @@ new_discovery = parametrize_discovery(
 async def discovery_mock(request, mocker):
     """Mock discovery and patch protocol queries to use Fake protocols."""
     fixture_info: FixtureInfo = request.param
-    yield patch_discovery({DISCOVERY_MOCK_IP: fixture_info}, mocker)
+    return patch_discovery({DISCOVERY_MOCK_IP: fixture_info}, mocker)
 
 
 def create_discovery_mock(ip: str, fixture_data: dict):
@@ -253,4 +253,4 @@ def unsupported_device_info(request, mocker):
 
     mocker.patch("kasa.discover._DiscoverProtocol.do_discover", mock_discover)
 
-    yield discovery_data
+    return discovery_data

kasa/tests/smart/features/test_brightness.py

@@ -18,17 +18,18 @@ async def test_brightness_component(dev: SmartDevice):
     # Test getting the value
     feature = brightness._device.features["brightness"]
     assert isinstance(feature.value, int)
-    assert feature.value > 1 and feature.value <= 100
+    assert feature.value > 1
+    assert feature.value <= 100
 
     # Test setting the value
     await feature.set_value(10)
     await dev.update()
     assert feature.value == 10
 
-    with pytest.raises(ValueError):
+    with pytest.raises(ValueError, match="out of range"):
         await feature.set_value(feature.minimum_value - 10)
 
-    with pytest.raises(ValueError):
+    with pytest.raises(ValueError, match="out of range"):
         await feature.set_value(feature.maximum_value + 10)
 
 
@@ -41,15 +42,16 @@ async def test_brightness_dimmable(dev: IotDevice):
     # Test getting the value
     feature = dev.features["brightness"]
     assert isinstance(feature.value, int)
-    assert feature.value > 0 and feature.value <= 100
+    assert feature.value > 0
+    assert feature.value <= 100
 
     # Test setting the value
     await feature.set_value(10)
     await dev.update()
     assert feature.value == 10
 
-    with pytest.raises(ValueError):
+    with pytest.raises(ValueError, match="out of range"):
         await feature.set_value(feature.minimum_value - 10)
 
-    with pytest.raises(ValueError):
+    with pytest.raises(ValueError, match="out of range"):
         await feature.set_value(feature.maximum_value + 10)

kasa/tests/smart/features/test_colortemp.py

@@ -23,8 +23,8 @@ async def test_colortemp_component(dev: SmartDevice):
     await dev.update()
     assert feature.value == new_value
 
-    with pytest.raises(ValueError):
+    with pytest.raises(ValueError, match="out of range"):
         await feature.set_value(feature.minimum_value - 10)
 
-    with pytest.raises(ValueError):
+    with pytest.raises(ValueError, match="out of range"):
         await feature.set_value(feature.maximum_value + 10)

kasa/tests/smart/modules/test_autooff.py

@@ -18,7 +18,7 @@ autooff = parametrize(
 
 @autooff
 @pytest.mark.parametrize(
-    "feature, prop_name, type",
+    ("feature", "prop_name", "type"),
     [
         ("auto_off_enabled", "enabled", bool),
         ("auto_off_minutes", "delay", int),

kasa/tests/smart/modules/test_contact.py

@@ -10,7 +10,7 @@ contact = parametrize(
 
 @contact
 @pytest.mark.parametrize(
-    "feature, type",
+    ("feature", "type"),
     [
         ("is_open", bool),
     ],

kasa/tests/smart/modules/test_fan.py

@@ -76,8 +76,8 @@ async def test_fan_module(dev: SmartDevice, mocker: MockerFixture):
     await dev.update()
     assert not device.is_on
 
-    with pytest.raises(ValueError):
+    with pytest.raises(ValueError, match="Invalid level"):
         await fan.set_fan_speed_level(-1)
 
-    with pytest.raises(ValueError):
+    with pytest.raises(ValueError, match="Invalid level"):
         await fan.set_fan_speed_level(5)

kasa/tests/smart/modules/test_firmware.py

@@ -19,11 +19,10 @@ firmware = parametrize(
 
 @firmware
 @pytest.mark.parametrize(
-    "feature, prop_name, type, required_version",
+    ("feature", "prop_name", "type", "required_version"),
     [
         ("auto_update_enabled", "auto_update_enabled", bool, 2),
         ("update_available", "update_available", bool, 1),
-        ("update_available", "update_available", bool, 1),
         ("current_firmware_version", "current_firmware", str, 1),
         ("available_firmware_version", "latest_firmware", str, 1),
     ],

kasa/tests/smart/modules/test_humidity.py

@@ -10,7 +10,7 @@ humidity = parametrize(
 
 @humidity
 @pytest.mark.parametrize(
-    "feature, type",
+    ("feature", "type"),
     [
         ("humidity", int),
         ("humidity_warning", bool),

kasa/tests/smart/modules/test_light_effect.py

@@ -37,7 +37,7 @@ async def test_light_effect(dev: Device, mocker: MockerFixture):
         assert light_effect.effect == effect
         assert feature.value == effect
 
-    with pytest.raises(ValueError):
+    with pytest.raises(ValueError, match="The effect foobar is not a built in effect"):
         await light_effect.set_effect("foobar")
 
 

kasa/tests/smart/modules/test_light_strip_effect.py

@@ -54,7 +54,7 @@ async def test_light_strip_effect(dev: Device, mocker: MockerFixture):
         assert light_effect.effect == effect
         assert feature.value == effect
 
-    with pytest.raises(ValueError):
+    with pytest.raises(ValueError, match="The effect foobar is not a built in effect"):
         await light_effect.set_effect("foobar")
 
 

kasa/tests/smart/modules/test_motionsensor.py

@@ -10,7 +10,7 @@ motion = parametrize(
 
 @motion
 @pytest.mark.parametrize(
-    "feature, type",
+    ("feature", "type"),
     [
         ("motion_detected", bool),
     ],

kasa/tests/smart/modules/test_temperature.py

@@ -16,7 +16,7 @@ temperature_warning = parametrize(
 
 @temperature
 @pytest.mark.parametrize(
-    "feature, type",
+    ("feature", "type"),
     [
         ("temperature", float),
         ("temperature_unit", str),

kasa/tests/smart/modules/test_temperaturecontrol.py

@@ -1,4 +1,5 @@
 import logging
+import re
 
 import pytest
 
@@ -15,7 +16,7 @@ temperature = parametrize(
 
 @thermostats_smart
 @pytest.mark.parametrize(
-    "feature, type",
+    ("feature", "type"),
     [
         ("target_temperature", float),
         ("temperature_offset", int),
@@ -59,10 +60,14 @@ async def test_set_temperature_invalid_values(dev):
     """Test that out-of-bounds temperature values raise errors."""
     temp_module: TemperatureControl = dev.modules["TemperatureControl"]
 
-    with pytest.raises(ValueError):
+    with pytest.raises(
+        ValueError, match="Invalid target temperature -1, must be in range"
+    ):
         await temp_module.set_target_temperature(-1)
 
-    with pytest.raises(ValueError):
+    with pytest.raises(
+        ValueError, match="Invalid target temperature 100, must be in range"
+    ):
         await temp_module.set_target_temperature(100)
 
 
@@ -70,10 +75,14 @@ async def test_set_temperature_invalid_values(dev):
 async def test_temperature_offset(dev):
     """Test the temperature offset API."""
     temp_module: TemperatureControl = dev.modules["TemperatureControl"]
-    with pytest.raises(ValueError):
+    with pytest.raises(
+        ValueError, match=re.escape("Temperature offset must be [-10, 10]")
+    ):
         await temp_module.set_temperature_offset(100)
 
-    with pytest.raises(ValueError):
+    with pytest.raises(
+        ValueError, match=re.escape("Temperature offset must be [-10, 10]")
+    ):
         await temp_module.set_temperature_offset(-100)
 
     await temp_module.set_temperature_offset(5)
@@ -83,7 +92,7 @@ async def test_temperature_offset(dev):
 
 @thermostats_smart
 @pytest.mark.parametrize(
-    "mode, states, frost_protection",
+    ("mode", "states", "frost_protection"),
     [
         pytest.param(ThermostatState.Idle, [], False, id="idle has empty"),
         pytest.param(
@@ -114,7 +123,7 @@ async def test_thermostat_mode(dev, mode, states, frost_protection):
 
 @thermostats_smart
 @pytest.mark.parametrize(
-    "mode, states, msg",
+    ("mode", "states", "msg"),
     [
         pytest.param(
             ThermostatState.Heating,

kasa/tests/smart/modules/test_waterleak.py

@@ -12,7 +12,7 @@ waterleak = parametrize(
 
 @waterleak
 @pytest.mark.parametrize(
-    "feature, prop_name, type",
+    ("feature", "prop_name", "type"),
     [
         ("water_alert", "alert", int),
         ("water_leak", "status", Enum),

kasa/tests/test_aestransport.py

@@ -100,7 +100,7 @@ async def test_login(mocker, status_code, error_code, inner_error_code, expectat
 
 
 @pytest.mark.parametrize(
-    "inner_error_codes, expectation, call_count",
+    ("inner_error_codes", "expectation", "call_count"),
     [
         ([SmartErrorCode.LOGIN_ERROR, 0, 0, 0], does_not_raise(), 4),
         (
@@ -298,7 +298,7 @@ async def test_unknown_errors(mocker, error_code):
         "requestID": 1,
         "terminal_uuid": "foobar",
     }
-    with pytest.raises(KasaException):
+    with pytest.raises(KasaException):  # noqa: PT012
         res = await transport.send(json_dumps(request))
         assert res is SmartErrorCode.INTERNAL_UNKNOWN_ERROR
 
@@ -315,7 +315,7 @@ async def test_port_override():
 
 
 @pytest.mark.parametrize(
-    "device_delay_required, should_error, should_succeed",
+    ("device_delay_required", "should_error", "should_succeed"),
     [
         pytest.param(0, False, True, id="No error"),
         pytest.param(0.125, True, True, id="Error then succeed"),

kasa/tests/test_bulb.py

@@ -1,5 +1,7 @@
 from __future__ import annotations
 
+import re
+
 import pytest
 from voluptuous import (
     All,
@@ -51,10 +53,8 @@ async def test_state_attributes(dev: Device):
 
 @bulb_iot
 async def test_light_state_without_update(dev: IotBulb, monkeypatch):
+    monkeypatch.setitem(dev._last_update["system"]["get_sysinfo"], "light_state", None)
     with pytest.raises(KasaException):
-        monkeypatch.setitem(
-            dev._last_update["system"]["get_sysinfo"], "light_state", None
-        )
         print(dev.light_state)
 
 
@@ -114,23 +114,72 @@ async def test_light_set_state(dev: IotBulb, mocker):
 
 @color_bulb
 @turn_on
-async def test_invalid_hsv(dev: Device, turn_on):
+@pytest.mark.parametrize(
+    ("hue", "sat", "brightness", "exception_cls", "error"),
+    [
+        pytest.param(-1, 0, 0, ValueError, "Invalid hue", id="hue out of range"),
+        pytest.param(361, 0, 0, ValueError, "Invalid hue", id="hue out of range"),
+        pytest.param(
+            0.5, 0, 0, TypeError, "Hue must be an integer", id="hue invalid type"
+        ),
+        pytest.param(
+            "foo", 0, 0, TypeError, "Hue must be an integer", id="hue invalid type"
+        ),
+        pytest.param(
+            0, -1, 0, ValueError, "Invalid saturation", id="saturation out of range"
+        ),
+        pytest.param(
+            0, 101, 0, ValueError, "Invalid saturation", id="saturation out of range"
+        ),
+        pytest.param(
+            0,
+            0.5,
+            0,
+            TypeError,
+            "Saturation must be an integer",
+            id="saturation invalid type",
+        ),
+        pytest.param(
+            0,
+            "foo",
+            0,
+            TypeError,
+            "Saturation must be an integer",
+            id="saturation invalid type",
+        ),
+        pytest.param(
+            0, 0, -1, ValueError, "Invalid brightness", id="brightness out of range"
+        ),
+        pytest.param(
+            0, 0, 101, ValueError, "Invalid brightness", id="brightness out of range"
+        ),
+        pytest.param(
+            0,
+            0,
+            0.5,
+            TypeError,
+            "Brightness must be an integer",
+            id="brightness invalid type",
+        ),
+        pytest.param(
+            0,
+            0,
+            "foo",
+            TypeError,
+            "Brightness must be an integer",
+            id="brightness invalid type",
+        ),
+    ],
+)
+async def test_invalid_hsv(
+    dev: Device, turn_on, hue, sat, brightness, exception_cls, error
+):
     light = dev.modules.get(Module.Light)
     assert light
     await handle_turn_on(dev, turn_on)
     assert light.is_color
-
-    for invalid_hue in [-1, 361, 0.5]:
-        with pytest.raises(ValueError):
-            await light.set_hsv(invalid_hue, 0, 0)  # type: ignore[arg-type]
-
-    for invalid_saturation in [-1, 101, 0.5]:
-        with pytest.raises(ValueError):
-            await light.set_hsv(0, invalid_saturation, 0)  # type: ignore[arg-type]
-
-    for invalid_brightness in [-1, 101, 0.5]:
-        with pytest.raises(ValueError):
-            await light.set_hsv(0, 0, invalid_brightness)  # type: ignore[arg-type]
+    with pytest.raises(exception_cls, match=error):
+        await light.set_hsv(hue, sat, brightness)
 
 
 @color_bulb
@@ -201,9 +250,13 @@ async def test_smart_temp_range(dev: Device):
 async def test_out_of_range_temperature(dev: Device):
     light = dev.modules.get(Module.Light)
     assert light
-    with pytest.raises(ValueError):
+    with pytest.raises(
+        ValueError, match="Temperature should be between \d+ and \d+, was 1000"
+    ):
         await light.set_color_temp(1000)
-    with pytest.raises(ValueError):
+    with pytest.raises(
+        ValueError, match="Temperature should be between \d+ and \d+, was 10000"
+    ):
         await light.set_color_temp(10000)
 
 
@@ -236,7 +289,7 @@ async def test_dimmable_brightness(dev: IotBulb, turn_on):
     await dev.update()
     assert dev.brightness == 10
 
-    with pytest.raises(ValueError):
+    with pytest.raises(TypeError, match="Brightness must be an integer"):
         await dev.set_brightness("foo")  # type: ignore[arg-type]
 
 
@@ -264,10 +317,16 @@ async def test_dimmable_brightness_transition(dev: IotBulb, mocker):
 async def test_invalid_brightness(dev: IotBulb):
     assert dev._is_dimmable
 
-    with pytest.raises(ValueError):
+    with pytest.raises(
+        ValueError,
+        match=re.escape("Invalid brightness value: 110 (valid range: 0-100%)"),
+    ):
         await dev.set_brightness(110)
 
-    with pytest.raises(ValueError):
+    with pytest.raises(
+        ValueError,
+        match=re.escape("Invalid brightness value: -100 (valid range: 0-100%)"),
+    ):
         await dev.set_brightness(-100)
 
 

kasa/tests/test_common_modules.py

@@ -128,9 +128,9 @@ async def test_light_effect_module(dev: Device, mocker: MockerFixture):
     assert feat.value == second_effect
     call.reset_mock()
 
-    with pytest.raises(ValueError):
+    with pytest.raises(ValueError, match="The effect foobar is not a built in effect."):
         await light_effect_module.set_effect("foobar")
-        call.assert_not_called()
+    call.assert_not_called()
 
 
 @light_effect
@@ -174,10 +174,10 @@ async def test_light_brightness(dev: Device):
     await dev.update()
     assert light.brightness == 10
 
-    with pytest.raises(ValueError):
+    with pytest.raises(ValueError, match="Invalid brightness value: "):
         await light.set_brightness(feature.minimum_value - 10)
 
-    with pytest.raises(ValueError):
+    with pytest.raises(ValueError, match="Invalid brightness value: "):
         await light.set_brightness(feature.maximum_value + 10)
 
 
@@ -213,10 +213,10 @@ async def test_light_color_temp(dev: Device):
     assert light.color_temp == feature.minimum_value + 20
     assert light.brightness == 60
 
-    with pytest.raises(ValueError):
+    with pytest.raises(ValueError, match="Temperature should be between \d+ and \d+"):
         await light.set_color_temp(feature.minimum_value - 10)
 
-    with pytest.raises(ValueError):
+    with pytest.raises(ValueError, match="Temperature should be between \d+ and \d+"):
         await light.set_color_temp(feature.maximum_value + 10)
 
 
@@ -293,9 +293,9 @@ async def test_light_preset_module(dev: Device, mocker: MockerFixture):
     assert preset_mod.preset == second_preset
     assert feat.value == second_preset
 
-    with pytest.raises(ValueError):
+    with pytest.raises(ValueError, match="foobar is not a valid preset"):
         await preset_mod.set_preset("foobar")
-        assert call.call_count == 3
+    assert call.call_count == 3
 
 
 @light_preset
@@ -315,9 +315,7 @@ async def test_light_preset_save(dev: Device, mocker: MockerFixture):
     await preset_mod.save_preset(second_preset, new_preset)
     await dev.update()
     new_preset_state = preset_mod.preset_states_list[0]
-    assert (
-        new_preset_state.brightness == new_preset.brightness
-        and new_preset_state.hue == new_preset.hue
-        and new_preset_state.saturation == new_preset.saturation
-        and new_preset_state.color_temp == new_preset.color_temp
-    )
+    assert new_preset_state.brightness == new_preset.brightness
+    assert new_preset_state.hue == new_preset.hue
+    assert new_preset_state.saturation == new_preset.saturation
+    assert new_preset_state.color_temp == new_preset.color_temp

kasa/tests/test_device.py

@@ -103,7 +103,7 @@ async def test_create_thin_wrapper():
 
 
 @pytest.mark.parametrize(
-    "device_class, use_class", kasa.deprecated_smart_devices.items()
+    ("device_class", "use_class"), kasa.deprecated_smart_devices.items()
 )
 def test_deprecated_devices(device_class, use_class):
     package_name = ".".join(use_class.__module__.split(".")[:-1])
@@ -117,7 +117,9 @@ def test_deprecated_devices(device_class, use_class):
     getattr(module, use_class.__name__)
 
 
-@pytest.mark.parametrize("deprecated_class, use_class", kasa.deprecated_classes.items())
+@pytest.mark.parametrize(
+    ("deprecated_class", "use_class"), kasa.deprecated_classes.items()
+)
 def test_deprecated_classes(deprecated_class, use_class):
     msg = f"{deprecated_class} is deprecated, use {use_class.__name__} instead"
     with pytest.deprecated_call(match=msg):

kasa/tests/test_dimmer.py

@@ -46,13 +46,23 @@ async def test_set_brightness_transition(dev, turn_on, mocker):
 
 @dimmer_iot
 async def test_set_brightness_invalid(dev):
-    for invalid_brightness in [-1, 101, 0.5]:
-        with pytest.raises(ValueError):
+    for invalid_brightness in [-1, 101]:
+        with pytest.raises(ValueError, match="Invalid brightness"):
             await dev.set_brightness(invalid_brightness)
 
-    for invalid_transition in [-1, 0.5]:
-        with pytest.raises(ValueError):
+    for invalid_type in [0.5, "foo"]:
+        with pytest.raises(TypeError, match="Brightness must be an integer"):
+            await dev.set_brightness(invalid_type)
+
+
+@dimmer_iot
+async def test_set_brightness_invalid_transition(dev):
+    for invalid_transition in [-1]:
+        with pytest.raises(ValueError, match="Transition value .+? is not valid."):
             await dev.set_brightness(1, transition=invalid_transition)
+    for invalid_type in [0.5, "foo"]:
+        with pytest.raises(TypeError, match="Transition must be integer"):
+            await dev.set_brightness(1, transition=invalid_type)
 
 
 @dimmer_iot
@@ -128,14 +138,24 @@ async def test_set_dimmer_transition_to_off(dev, turn_on, mocker):
 
 
 @dimmer_iot
-async def test_set_dimmer_transition_invalid(dev):
-    for invalid_brightness in [-1, 101, 0.5]:
-        with pytest.raises(ValueError):
+async def test_set_dimmer_transition_invalid_brightness(dev):
+    for invalid_brightness in [-1, 101]:
+        with pytest.raises(ValueError, match="Invalid brightness value: "):
             await dev.set_dimmer_transition(invalid_brightness, 1000)
 
-    for invalid_transition in [-1, 0.5]:
-        with pytest.raises(ValueError):
-            await dev.set_dimmer_transition(1, invalid_transition)
+    for invalid_type in [0.5, "foo"]:
+        with pytest.raises(TypeError, match="Transition must be integer"):
+            await dev.set_dimmer_transition(1, invalid_type)
+
+
+@dimmer_iot
+async def test_set_dimmer_transition_invalid_transition(dev):
+    for invalid_transition in [-1]:
+        with pytest.raises(ValueError, match="Transition value .+? is not valid."):
+            await dev.set_dimmer_transition(1, transition=invalid_transition)
+    for invalid_type in [0.5, "foo"]:
+        with pytest.raises(TypeError, match="Transition must be integer"):
+            await dev.set_dimmer_transition(1, transition=invalid_type)
 
 
 @dimmer_iot

kasa/tests/test_discovery.py

@@ -252,7 +252,7 @@ INVALIDS = [
 ]
 
 
-@pytest.mark.parametrize("msg, data", INVALIDS)
+@pytest.mark.parametrize(("msg", "data"), INVALIDS)
 async def test_discover_invalid_info(msg, data, mocker):
     """Make sure that invalid discovery information raises an exception."""
     host = "127.0.0.1"
@@ -304,7 +304,7 @@ async def test_discover_datagram_received(mocker, discovery_data):
     assert dev.host == addr
 
 
-@pytest.mark.parametrize("msg, data", INVALIDS)
+@pytest.mark.parametrize(("msg", "data"), INVALIDS)
 async def test_discover_invalid_responses(msg, data, mocker):
     """Verify that we don't crash whole discovery if some devices in the network are sending unexpected data."""
     proto = _DiscoverProtocol()
@@ -349,7 +349,7 @@ async def test_discover_single_authentication(discovery_mock, mocker):
         side_effect=AuthenticationError("Failed to authenticate"),
     )
 
-    with pytest.raises(
+    with pytest.raises(  # noqa: PT012
         AuthenticationError,
         match="Failed to authenticate",
     ):
@@ -495,7 +495,7 @@ async def test_do_discover_drop_packets(mocker, port, do_not_reply_count):
 
 
 @pytest.mark.parametrize(
-    "port, will_timeout",
+    ("port", "will_timeout"),
     [(FakeDatagramTransport.GHOST_PORT, True), (20002, False)],
     ids=["unknownport", "unsupporteddevice"],
 )

kasa/tests/test_emeter.py

@@ -61,7 +61,7 @@ async def test_get_emeter_realtime(dev):
 
 
 @has_emeter_iot
-@pytest.mark.requires_dummy
+@pytest.mark.requires_dummy()
 async def test_get_emeter_daily(dev):
     assert dev.has_emeter
 
@@ -81,7 +81,7 @@ async def test_get_emeter_daily(dev):
 
 
 @has_emeter_iot
-@pytest.mark.requires_dummy
+@pytest.mark.requires_dummy()
 async def test_get_emeter_monthly(dev):
     assert dev.has_emeter
 

kasa/tests/test_feature.py

@@ -14,7 +14,7 @@ class DummyDevice:
     pass
 
 
-@pytest.fixture
+@pytest.fixture()
 def dummy_feature() -> Feature:
     # create_autospec for device slows tests way too much, so we use a dummy here
 
@@ -49,7 +49,7 @@ def test_feature_api(dummy_feature: Feature):
 )
 def test_feature_setter_on_sensor(read_only_type):
     """Test that creating a sensor feature with a setter causes an error."""
-    with pytest.raises(ValueError):
+    with pytest.raises(ValueError, match="Invalid type for configurable feature"):
         Feature(
             device=DummyDevice(),  # type: ignore[arg-type]
             id="dummy_error",
@@ -103,7 +103,7 @@ async def test_feature_setter(dev, mocker, dummy_feature: Feature):
 async def test_feature_setter_read_only(dummy_feature):
     """Verify that read-only feature raises an exception when trying to change it."""
     dummy_feature.attribute_setter = None
-    with pytest.raises(ValueError):
+    with pytest.raises(ValueError, match="Tried to set read-only feature"):
         await dummy_feature.set_value("value for read only feature")
 
 
@@ -134,7 +134,7 @@ async def test_feature_choice_list(dummy_feature, caplog, mocker: MockerFixture)
     mock_setter.assert_called_with("first")
     mock_setter.reset_mock()
 
-    with pytest.raises(ValueError):
+    with pytest.raises(ValueError, match="Unexpected value for dummy_feature: invalid"):  # noqa: PT012
         await dummy_feature.set_value("invalid")
         assert "Unexpected value" in caplog.text
 

kasa/tests/test_httpclient.py

@@ -14,7 +14,7 @@ from ..httpclient import HttpClient
 
 
 @pytest.mark.parametrize(
-    "error, error_raises, error_message",
+    ("error", "error_raises", "error_message"),
     [
         (
             aiohttp.ServerDisconnectedError(),
@@ -52,7 +52,7 @@ from ..httpclient import HttpClient
         "ServerFingerprintMismatch",
     ),
 )
-@pytest.mark.parametrize("mock_read", (False, True), ids=("post", "read"))
+@pytest.mark.parametrize("mock_read", [False, True], ids=("post", "read"))
 async def test_httpclient_errors(mocker, error, error_raises, error_message, mock_read):
     class _mock_response:
         def __init__(self, status, error):

kasa/tests/test_iotdevice.py

@@ -89,7 +89,7 @@ async def test_state_info(dev):
     assert isinstance(dev.state_information, dict)
 
 
-@pytest.mark.requires_dummy
+@pytest.mark.requires_dummy()
 @device_iot
 async def test_invalid_connection(mocker, dev):
     with (

kasa/tests/test_klapprotocol.py

@@ -49,7 +49,7 @@ class _mock_response:
 
 
 @pytest.mark.parametrize(
-    "error, retry_expectation",
+    ("error", "retry_expectation"),
     [
         (Exception("dummy exception"), False),
         (aiohttp.ServerTimeoutError("dummy exception"), True),
@@ -79,7 +79,7 @@ async def test_protocol_retries_via_client_session(
 
 
 @pytest.mark.parametrize(
-    "error, retry_expectation",
+    ("error", "retry_expectation"),
     [
         (KasaException("dummy exception"), False),
         (_RetryableError("dummy exception"), True),
@@ -305,7 +305,7 @@ async def test_transport_decrypt_error(mocker, caplog):
 
 
 @pytest.mark.parametrize(
-    "device_credentials, expectation",
+    ("device_credentials", "expectation"),
     [
         (Credentials("foo", "bar"), does_not_raise()),
         (Credentials(), does_not_raise()),
@@ -321,7 +321,7 @@ async def test_transport_decrypt_error(mocker, caplog):
     ids=("client", "blank", "kasa_setup", "shouldfail"),
 )
 @pytest.mark.parametrize(
-    "transport_class, seed_auth_hash_calc",
+    ("transport_class", "seed_auth_hash_calc"),
     [
         pytest.param(KlapTransport, lambda c, s, a: c + a, id="KLAP"),
         pytest.param(KlapTransportV2, lambda c, s, a: c + s + a, id="KLAPV2"),
@@ -365,7 +365,7 @@ async def test_handshake1(
 
 
 @pytest.mark.parametrize(
-    "transport_class, seed_auth_hash_calc1, seed_auth_hash_calc2",
+    ("transport_class", "seed_auth_hash_calc1", "seed_auth_hash_calc2"),
     [
         pytest.param(
             KlapTransport, lambda c, s, a: c + a, lambda c, s, a: s + a, id="KLAP"
@@ -466,7 +466,7 @@ async def test_query(mocker):
 
 
 @pytest.mark.parametrize(
-    "response_status, credentials_match, expectation",
+    ("response_status", "credentials_match", "expectation"),
     [
         pytest.param(
             (403, 403, 403),

kasa/tests/test_lightstrip.py

@@ -22,7 +22,9 @@ async def test_lightstrip_effect(dev: IotLightStrip):
 
 @lightstrip_iot
 async def test_effects_lightstrip_set_effect(dev: IotLightStrip):
-    with pytest.raises(ValueError):
+    with pytest.raises(
+        ValueError, match="The effect Not real is not a built in effect"
+    ):
         await dev.set_effect("Not real")
 
     await dev.set_effect("Candy Cane")

kasa/tests/test_protocol.py

@@ -33,7 +33,7 @@ from .fakeprotocol_iot import FakeIotTransport
 
 
 @pytest.mark.parametrize(
-    "protocol_class, transport_class",
+    ("protocol_class", "transport_class"),
     [
         (_deprecated_TPLinkSmartHomeProtocol, XorTransport),
         (IotProtocol, XorTransport),
@@ -63,7 +63,7 @@ async def test_protocol_retries(mocker, retry_count, protocol_class, transport_c
 
 
 @pytest.mark.parametrize(
-    "protocol_class, transport_class",
+    ("protocol_class", "transport_class"),
     [
         (_deprecated_TPLinkSmartHomeProtocol, XorTransport),
         (IotProtocol, XorTransport),
@@ -87,7 +87,7 @@ async def test_protocol_no_retry_on_unreachable(
 
 
 @pytest.mark.parametrize(
-    "protocol_class, transport_class",
+    ("protocol_class", "transport_class"),
     [
         (_deprecated_TPLinkSmartHomeProtocol, XorTransport),
         (IotProtocol, XorTransport),
@@ -111,7 +111,7 @@ async def test_protocol_no_retry_connection_refused(
 
 
 @pytest.mark.parametrize(
-    "protocol_class, transport_class",
+    ("protocol_class", "transport_class"),
     [
         (_deprecated_TPLinkSmartHomeProtocol, XorTransport),
         (IotProtocol, XorTransport),
@@ -135,7 +135,7 @@ async def test_protocol_retry_recoverable_error(
 
 
 @pytest.mark.parametrize(
-    "protocol_class, transport_class, encryption_class",
+    ("protocol_class", "transport_class", "encryption_class"),
     [
         (
             _deprecated_TPLinkSmartHomeProtocol,
@@ -185,7 +185,7 @@ async def test_protocol_reconnect(
 
 
 @pytest.mark.parametrize(
-    "protocol_class, transport_class, encryption_class",
+    ("protocol_class", "transport_class", "encryption_class"),
     [
         (
             _deprecated_TPLinkSmartHomeProtocol,
@@ -239,7 +239,7 @@ async def test_protocol_handles_cancellation_during_write(
 
 
 @pytest.mark.parametrize(
-    "protocol_class, transport_class, encryption_class",
+    ("protocol_class", "transport_class", "encryption_class"),
     [
         (
             _deprecated_TPLinkSmartHomeProtocol,
@@ -291,7 +291,7 @@ async def test_protocol_handles_cancellation_during_connection(
 
 
 @pytest.mark.parametrize(
-    "protocol_class, transport_class, encryption_class",
+    ("protocol_class", "transport_class", "encryption_class"),
     [
         (
             _deprecated_TPLinkSmartHomeProtocol,
@@ -338,7 +338,7 @@ async def test_protocol_logging(
 
 
 @pytest.mark.parametrize(
-    "protocol_class, transport_class, encryption_class",
+    ("protocol_class", "transport_class", "encryption_class"),
     [
         (
             _deprecated_TPLinkSmartHomeProtocol,
@@ -494,14 +494,10 @@ def test_protocol_init_signature(class_name_obj):
     params = list(inspect.signature(class_name_obj[1].__init__).parameters.values())
 
     assert len(params) == 2
-    assert (
-        params[0].name == "self"
-        and params[0].kind == inspect.Parameter.POSITIONAL_OR_KEYWORD
-    )
-    assert (
-        params[1].name == "transport"
-        and params[1].kind == inspect.Parameter.KEYWORD_ONLY
-    )
+    assert params[0].name == "self"
+    assert params[0].kind == inspect.Parameter.POSITIONAL_OR_KEYWORD
+    assert params[1].name == "transport"
+    assert params[1].kind == inspect.Parameter.KEYWORD_ONLY
 
 
 @pytest.mark.parametrize(
@@ -511,13 +507,10 @@ def test_transport_init_signature(class_name_obj):
     params = list(inspect.signature(class_name_obj[1].__init__).parameters.values())
 
     assert len(params) == 2
-    assert (
-        params[0].name == "self"
-        and params[0].kind == inspect.Parameter.POSITIONAL_OR_KEYWORD
-    )
-    assert (
-        params[1].name == "config" and params[1].kind == inspect.Parameter.KEYWORD_ONLY
-    )
+    assert params[0].name == "self"
+    assert params[0].kind == inspect.Parameter.POSITIONAL_OR_KEYWORD
+    assert params[1].name == "config"
+    assert params[1].kind == inspect.Parameter.KEYWORD_ONLY
 
 
 @pytest.mark.parametrize(
@@ -582,7 +575,7 @@ async def test_transport_credentials_hash(
 
 @pytest.mark.parametrize(
     "transport_class",
-    [AesTransport, KlapTransport, KlapTransportV2, XorTransport, XorTransport],
+    [AesTransport, KlapTransport, KlapTransportV2, XorTransport],
 )
 async def test_transport_credentials_hash_from_config(mocker, transport_class):
     """Test that credentials_hash provided via config sets correctly."""
@@ -599,7 +592,7 @@ async def test_transport_credentials_hash_from_config(mocker, transport_class):
 
 
 @pytest.mark.parametrize(
-    "error, retry_expectation",
+    ("error", "retry_expectation"),
     [
         (ConnectionRefusedError("dummy exception"), False),
         (OSError(errno.EHOSTDOWN, os.strerror(errno.EHOSTDOWN)), False),
@@ -609,7 +602,7 @@ async def test_transport_credentials_hash_from_config(mocker, transport_class):
     ids=("ConnectionRefusedError", "OSErrorNoRetry", "OSErrorRetry", "Exception"),
 )
 @pytest.mark.parametrize(
-    "protocol_class, transport_class",
+    ("protocol_class", "transport_class"),
     [
         (_deprecated_TPLinkSmartHomeProtocol, XorTransport),
         (IotProtocol, XorTransport),
@@ -631,7 +624,7 @@ async def test_protocol_will_retry_on_connect(
 
 
 @pytest.mark.parametrize(
-    "error, retry_expectation",
+    ("error", "retry_expectation"),
     [
         (ConnectionRefusedError("dummy exception"), True),
         (OSError(errno.EHOSTDOWN, os.strerror(errno.EHOSTDOWN)), True),
@@ -641,7 +634,7 @@ async def test_protocol_will_retry_on_connect(
     ids=("ConnectionRefusedError", "OSErrorNoRetry", "OSErrorRetry", "Exception"),
 )
 @pytest.mark.parametrize(
-    "protocol_class, transport_class",
+    ("protocol_class", "transport_class"),
     [
         (_deprecated_TPLinkSmartHomeProtocol, XorTransport),
         (IotProtocol, XorTransport),

kasa/tests/test_readme_examples.py

@@ -145,7 +145,7 @@ def test_tutorial_examples(readmes_mock):
     assert not res["failed"]
 
 
-@pytest.fixture
+@pytest.fixture()
 async def readmes_mock(mocker):
     fixture_infos = {
         "127.0.0.1": get_fixture_info("KP303(UK)_1.0_1.0.3.json", "IOT"),  # Strip
@@ -154,4 +154,4 @@ async def readmes_mock(mocker):
         "127.0.0.4": get_fixture_info("KL430(US)_1.0_1.0.10.json", "IOT"),  # Lightstrip
         "127.0.0.5": get_fixture_info("HS220(US)_1.0_1.5.7.json", "IOT"),  # Dimmer
     }
-    yield patch_discovery(fixture_infos, mocker)
+    return patch_discovery(fixture_infos, mocker)

kasa/tests/test_smartprotocol.py

@@ -65,7 +65,7 @@ async def test_smart_device_unknown_errors(
         dummy_protocol._transport, "send", return_value=mock_response
     )
 
-    with pytest.raises(KasaException):
+    with pytest.raises(KasaException):  # noqa: PT012
         res = await dummy_protocol.query(DUMMY_QUERY)
         assert res is SmartErrorCode.INTERNAL_UNKNOWN_ERROR
 

kasa/tests/test_usage.py

@@ -20,7 +20,8 @@ def test_usage_convert_stat_data():
     k, v = d.popitem()
     assert isinstance(k, int)
     assert isinstance(v, int)
-    assert k == 4 and v == 30
+    assert k == 4
+    assert v == 30
 
 
 def test_usage_today():

pyproject.toml

@@ -117,6 +117,7 @@ select = [
   "FA", # flake8-future-annotations
   "I",  # isort
   "S",  # bandit
+  "PT",  # flake8-pytest-style
   "LOG",  # flake8-logging
   "G",  # flake8-logging-format
 ]