Ensure shutdown does not deadlock (#49282)

tests/test_runner.py

@@ -0,0 +1,39 @@
+"""Test the runner."""
+
+import threading
+from unittest.mock import patch
+
+from homeassistant import core, runner
+from homeassistant.util import executor, thread
+
+# https://github.com/home-assistant/supervisor/blob/main/supervisor/docker/homeassistant.py
+SUPERVISOR_HARD_TIMEOUT = 220
+
+TIMEOUT_SAFETY_MARGIN = 10
+
+
+async def test_cumulative_shutdown_timeout_less_than_supervisor():
+    """Verify the cumulative shutdown timeout is at least 10s less than the supervisor."""
+    assert (
+        core.STAGE_1_SHUTDOWN_TIMEOUT
+        + core.STAGE_2_SHUTDOWN_TIMEOUT
+        + core.STAGE_3_SHUTDOWN_TIMEOUT
+        + executor.EXECUTOR_SHUTDOWN_TIMEOUT
+        + thread.THREADING_SHUTDOWN_TIMEOUT
+        + TIMEOUT_SAFETY_MARGIN
+        <= SUPERVISOR_HARD_TIMEOUT
+    )
+
+
+async def test_setup_and_run_hass(hass, tmpdir):
+    """Test we can setup and run."""
+    test_dir = tmpdir.mkdir("config")
+    default_config = runner.RuntimeConfig(test_dir)
+
+    with patch("homeassistant.bootstrap.async_setup_hass", return_value=hass), patch(
+        "threading._shutdown"
+    ), patch("homeassistant.core.HomeAssistant.async_run") as mock_run:
+        await runner.setup_and_run_hass(default_config)
+        assert threading._shutdown == thread.deadlock_safe_shutdown
+
+    assert mock_run.called