Fix zimi tests opening sockets (home-assistant#156382)

Author: emontnemery

tests/components/zimi/test_config_flow.py

@@ -1,6 +1,7 @@
 """Tests for the zimi config flow."""
 
-from unittest.mock import MagicMock, patch
+from collections.abc import Generator
+from unittest.mock import AsyncMock, MagicMock, patch
 
 import pytest
 from zcc import (
@@ -44,6 +45,15 @@ def discovery_mock():
         yield mock
 
 
+@pytest.fixture(autouse=True)
+def mock_setup_entry() -> Generator[AsyncMock]:
+    """Override async_setup_entry."""
+    with patch(
+        "homeassistant.components.zimi.async_setup_entry", return_value=True
+    ) as mock_setup_entry:
+        yield mock_setup_entry
+
+
 async def test_user_discovery_success(
     hass: HomeAssistant,
     discovery_mock: MagicMock,