fix test coverage

tests/components/wolflink/test_sensor.py

@@ -180,3 +180,31 @@ async def test_sensor(
 
     state = hass.states.get(f"{wolf_parameter.parameter_id}")
     assert state == snapshot
+
+    def test_wolflink_sensor_native_value_list_item() -> None:
+        """Test WolflinkSensor native value for ListItemParameter."""
+        coordinator = MagicMock()
+        parameter = MagicMock(spec=ListItemParameter)
+        parameter.parameter_id = 788457854
+        parameter.items = [
+            MagicMock(value=1, name="Pump"),
+            MagicMock(value=2, name="Heating"),
+        ]
+        sensor = WolfLinkSensor(coordinator, parameter, "1234", MagicMock())
+        coordinator.data = {"list_item_param": [None, 1]}
+        assert sensor.native_value == "Pump"
+
+        coordinator.data = {"list_item_param": [None, 2]}
+        assert sensor.native_value == "Heating"
+
+        coordinator.data = {"list_item_param": [None, 3]}
+        assert sensor.native_value == 3
+
+    def test_wolflink_sensor_native_value_no_data() -> None:
+        """Test WolflinkSensor native value when no data is available."""
+        coordinator = MagicMock()
+        parameter = MagicMock()
+        parameter.parameter_id = "no_data_param"
+        sensor = WolfLinkSensor(coordinator, parameter, "mock_device_id", MagicMock())
+        coordinator.data = {}
+        assert sensor.native_value is None