Improve type hints in watttime tests (#123921)

tests/components/watttime/conftest.py

@@ -1,6 +1,7 @@
 """Define test fixtures for WattTime."""
 
-import json
+from collections.abc import AsyncGenerator
+from typing import Any
 from unittest.mock import AsyncMock, Mock, patch
 
 import pytest
@@ -20,13 +21,17 @@ from homeassistant.const import (
     CONF_PASSWORD,
     CONF_USERNAME,
 )
+from homeassistant.core import HomeAssistant
 from homeassistant.setup import async_setup_component
+from homeassistant.util.json import JsonObjectType
 
-from tests.common import MockConfigEntry, load_fixture
+from tests.common import MockConfigEntry, load_json_object_fixture
 
 
 @pytest.fixture(name="client")
-def client_fixture(get_grid_region, data_realtime_emissions):
+def client_fixture(
+    get_grid_region: AsyncMock, data_realtime_emissions: JsonObjectType
+) -> Mock:
     """Define an aiowatttime client."""
     client = Mock()
     client.emissions.async_get_grid_region = get_grid_region
@@ -37,7 +42,7 @@ def client_fixture(get_grid_region, data_realtime_emissions):
 
 
 @pytest.fixture(name="config_auth")
-def config_auth_fixture(hass):
+def config_auth_fixture() -> dict[str, Any]:
     """Define an auth config entry data fixture."""
     return {
         CONF_USERNAME: "user",
@@ -46,7 +51,7 @@ def config_auth_fixture(hass):
 
 
 @pytest.fixture(name="config_coordinates")
-def config_coordinates_fixture(hass):
+def config_coordinates_fixture() -> dict[str, Any]:
     """Define a coordinates config entry data fixture."""
     return {
         CONF_LATITUDE: 32.87336,
@@ -55,7 +60,7 @@ def config_coordinates_fixture(hass):
 
 
 @pytest.fixture(name="config_location_type")
-def config_location_type_fixture(hass):
+def config_location_type_fixture() -> dict[str, Any]:
     """Define a location type config entry data fixture."""
     return {
         CONF_LOCATION_TYPE: LOCATION_TYPE_COORDINATES,
@@ -63,7 +68,9 @@ def config_location_type_fixture(hass):
 
 
 @pytest.fixture(name="config_entry")
-def config_entry_fixture(hass, config_auth, config_coordinates):
+def config_entry_fixture(
+    hass: HomeAssistant, config_auth: dict[str, Any], config_coordinates: dict[str, Any]
+) -> MockConfigEntry:
     """Define a config entry fixture."""
     entry = MockConfigEntry(
         domain=DOMAIN,
@@ -82,25 +89,30 @@ def config_entry_fixture(hass, config_auth, config_coordinates):
 
 
 @pytest.fixture(name="data_grid_region", scope="package")
-def data_grid_region_fixture():
+def data_grid_region_fixture() -> JsonObjectType:
     """Define grid region data."""
-    return json.loads(load_fixture("grid_region_data.json", "watttime"))
+    return load_json_object_fixture("grid_region_data.json", "watttime")
 
 
 @pytest.fixture(name="data_realtime_emissions", scope="package")
-def data_realtime_emissions_fixture():
+def data_realtime_emissions_fixture() -> JsonObjectType:
     """Define realtime emissions data."""
-    return json.loads(load_fixture("realtime_emissions_data.json", "watttime"))
+    return load_json_object_fixture("realtime_emissions_data.json", "watttime")
 
 
 @pytest.fixture(name="get_grid_region")
-def get_grid_region_fixture(data_grid_region):
+def get_grid_region_fixture(data_grid_region: JsonObjectType) -> AsyncMock:
     """Define an aiowatttime method to get grid region data."""
     return AsyncMock(return_value=data_grid_region)
 
 
 @pytest.fixture(name="setup_watttime")
-async def setup_watttime_fixture(hass, client, config_auth, config_coordinates):
+async def setup_watttime_fixture(
+    hass: HomeAssistant,
+    client: Mock,
+    config_auth: dict[str, Any],
+    config_coordinates: dict[str, Any],
+) -> AsyncGenerator[None]:
     """Define a fixture to set up WattTime."""
     with (
         patch(