Fix iskra tests opening sockets (home-assistant#156374)

Author: emontnemery

tests/components/iskra/test_config_flow.py

@@ -1,5 +1,8 @@
 """Tests for the Iskra config flow."""
 
+from collections.abc import Generator
+from unittest.mock import AsyncMock, patch
+
 from pyiskra.exceptions import (
     DeviceConnectionError,
     DeviceTimeoutError,
@@ -35,6 +38,15 @@
 from tests.common import MockConfigEntry
 
 
+@pytest.fixture(autouse=True)
+def mock_setup_entry() -> Generator[AsyncMock]:
+    """Override async_setup_entry."""
+    with patch(
+        "homeassistant.components.iskra.async_setup_entry", return_value=True
+    ) as mock_setup_entry:
+        yield mock_setup_entry
+
+
 # Test step_user with Rest API protocol
 async def test_user_rest_no_auth(hass: HomeAssistant, mock_pyiskra_rest) -> None:
     """Test the user flow with Rest API protocol."""