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- from unittest.mock import MagicMock, patch
- from app.backend_pre_start import init, logger
- from sqlmodel import select
- def test_init_successful_connection() -> None:
- engine_mock = MagicMock()
- session_mock = MagicMock()
- exec_mock = MagicMock(return_value=True)
- session_mock.configure_mock(**{"exec.return_value": exec_mock})
- with patch("sqlmodel.Session", return_value=session_mock), patch.object(
- logger, "info"
- ), patch.object(logger, "error"), patch.object(logger, "warn"):
- try:
- init(engine_mock)
- connection_successful = True
- except Exception:
- connection_successful = False
- assert (
- connection_successful
- ), "The database connection should be successful and not raise an exception."
- assert session_mock.exec.called_once_with(
- select(1)
- ), "The session should execute a select statement once."
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