refactor fixtures in conftest.py and test_set_hotwater.py; improve ty…

…pe hinting and code clarity

tests/conftest.py

@@ -1,4 +1,5 @@
 """Fixtures for the BSBLAN tests."""
+
 import json
 from typing import Any, AsyncGenerator
 from unittest.mock import AsyncMock
@@ -12,9 +13,9 @@
 
 
 @pytest.fixture
-
 async def mock_bsblan(
-    aresponses: ResponsesMockServer, monkeypatch: Any,
+    aresponses: ResponsesMockServer,
+    monkeypatch: Any,
 ) -> AsyncGenerator[BSBLAN, Any]:
     """Fixture to create a mocked BSBLAN instance."""
     monkeypatch.setenv("BSBLAN_PASS", "your_password")
@@ -34,6 +35,6 @@ async def mock_bsblan(
         monkeypatch.setattr(bsblan, "_firmware_version", "1.0.38-20200730234859")
         monkeypatch.setattr(bsblan, "_api_version", "v3")
         monkeypatch.setattr(bsblan, "_api_data", API_V3)
-        request_mock = AsyncMock(return_value={"status": "ok"})
+        request_mock: AsyncMock = AsyncMock(return_value={"status": "ok"})
         monkeypatch.setattr(bsblan, "_request", request_mock)
         yield bsblan

tests/test_set_hotwater.py

@@ -12,8 +12,6 @@
 from bsblan import BSBLAN, BSBLANError
 from bsblan.constants import MULTI_PARAMETER_ERROR_MSG, NO_STATE_ERROR_MSG
 
-request_mock: AsyncMock = AsyncMock(return_value={"status": "ok"})
-
 
 @pytest.mark.asyncio
 async def test_set_hot_water(mock_bsblan: BSBLAN) -> None: