tests: add type annotations to Smart tests (#1686)

Add type annotations across all 'smart' tests, enabling mypy to check test function bodies, catching type errors that were previously hidden.

tests/smart/modules/test_alarm.py

@@ -1,17 +1,32 @@
 from __future__ import annotations
 
+from typing import TypedDict
+
 import pytest
 from pytest_mock import MockerFixture
 
 from kasa import Module
 from kasa.smart import SmartDevice
 from kasa.smart.modules import Alarm
+from kasa.smart.modules.alarm import AlarmVolume
 
 from ...device_fixtures import get_parent_and_child_modules, parametrize
 
 alarm = parametrize("has alarm", component_filter="alarm", protocol_filter={"SMART"})
 
 
+class PlayAlarmKwargs(TypedDict, total=False):
+    duration: int
+    volume: AlarmVolume | int
+    sound: str
+
+
+class PlayAlarmRequestParams(TypedDict, total=False):
+    alarm_duration: int
+    alarm_volume: AlarmVolume
+    alarm_type: str
+
+
 @alarm
 @pytest.mark.parametrize(
     ("feature", "prop_name", "type"),
@@ -23,7 +38,9 @@ alarm = parametrize("has alarm", component_filter="alarm", protocol_filter={"SMA
         ("alarm_volume_level", "alarm_volume", int),
     ],
 )
-async def test_features(dev: SmartDevice, feature: str, prop_name: str, type: type):
+async def test_features(
+    dev: SmartDevice, feature: str, prop_name: str, type: type
+) -> None:
     """Test that features are registered and work as expected."""
     alarm = next(get_parent_and_child_modules(dev, Module.Alarm))
     assert alarm is not None
@@ -37,7 +54,7 @@ async def test_features(dev: SmartDevice, feature: str, prop_name: str, type: ty
 
 
 @alarm
-async def test_volume_feature(dev: SmartDevice):
+async def test_volume_feature(dev: SmartDevice) -> None:
     """Test that volume features have correct choices and range."""
     alarm = next(get_parent_and_child_modules(dev, Module.Alarm))
     assert alarm is not None
@@ -64,7 +81,12 @@ async def test_volume_feature(dev: SmartDevice):
         ),
     ],
 )
-async def test_play(dev: SmartDevice, kwargs, request_params, mocker: MockerFixture):
+async def test_play(
+    dev: SmartDevice,
+    kwargs: PlayAlarmKwargs,
+    request_params: PlayAlarmRequestParams,
+    mocker: MockerFixture,
+) -> None:
     """Test that play parameters are handled correctly."""
     alarm: Alarm = next(get_parent_and_child_modules(dev, Module.Alarm))
     call_spy = mocker.spy(alarm, "call")
@@ -86,7 +108,7 @@ async def test_play(dev: SmartDevice, kwargs, request_params, mocker: MockerFixt
 
 
 @alarm
-async def test_stop(dev: SmartDevice, mocker: MockerFixture):
+async def test_stop(dev: SmartDevice, mocker: MockerFixture) -> None:
     """Test that stop creates the correct call."""
     alarm: Alarm = next(get_parent_and_child_modules(dev, Module.Alarm))
     call_spy = mocker.spy(alarm, "call")
@@ -112,7 +134,7 @@ async def test_set_alarm_configure(
     method: str,
     value: str | int,
     target_key: str,
-):
+) -> None:
     """Test that set_alarm_sound creates the correct call."""
     alarm: Alarm = next(get_parent_and_child_modules(dev, Module.Alarm))
     call_spy = mocker.spy(alarm, "call")