Fix temp files of mqtt CI tests not cleaned up properly (#138741)

* Fix temp files of mqtt CI tests not cleaned up properly

* Do not cleanup tempfiles, patch gettempdir only

tests/components/mqtt/conftest.py

@@ -2,6 +2,7 @@
 
 import asyncio
 from collections.abc import AsyncGenerator, Generator
+from pathlib import Path
 from random import getrandbits
 from typing import Any
 from unittest.mock import AsyncMock, patch
@@ -39,13 +40,22 @@ def temp_dir_prefix() -> str:
 
 
 @pytest.fixture(autouse=True)
-def mock_temp_dir(temp_dir_prefix: str) -> Generator[str]:
+async def mock_temp_dir(
+    hass: HomeAssistant, tmp_path: Path, temp_dir_prefix: str
+) -> AsyncGenerator[str]:
     """Mock the certificate temp directory."""
-    with patch(
-        # Patch temp dir name to avoid tests fail running in parallel
-        "homeassistant.components.mqtt.util.TEMP_DIR_NAME",
-        f"home-assistant-mqtt-{temp_dir_prefix}-{getrandbits(10):03x}",
-    ) as mocked_temp_dir:
+    mqtt_temp_dir = f"home-assistant-mqtt-{temp_dir_prefix}-{getrandbits(10):03x}"
+    with (
+        patch(
+            "homeassistant.components.mqtt.util.tempfile.gettempdir",
+            return_value=tmp_path,
+        ),
+        patch(
+            # Patch temp dir name to avoid tests fail running in parallel
+            "homeassistant.components.mqtt.util.TEMP_DIR_NAME",
+            mqtt_temp_dir,
+        ) as mocked_temp_dir,
+    ):
         yield mocked_temp_dir
 
 

tests/components/mqtt/test_binary_sensor.py

@@ -1034,6 +1034,7 @@ async def test_reloadable(
     await help_test_reloadable(hass, mqtt_client_mock, domain, config)
 
 
+@pytest.mark.usefixtures("mock_temp_dir")
 @pytest.mark.parametrize(
     ("hass_config", "payload1", "state1", "payload2", "state2"),
     [

tests/components/mqtt/test_sensor.py

@@ -1409,6 +1409,7 @@ async def test_reloadable(
     await help_test_reloadable(hass, mqtt_client_mock, domain, config)
 
 
+@pytest.mark.usefixtures("mock_temp_dir")
 @pytest.mark.parametrize(
     "hass_config",
     [