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from unittest.mock import MagicMock
from pytest_mock import MockerFixture
from sqlmodel import select
from app.celeryworker_pre_start import init, logger
def test_init_successful_connection(mocker: MockerFixture) -> None:
engine_mock = MagicMock()
session_mock = MagicMock()
exec_mock = MagicMock(return_value=True)
session_mock.configure_mock(**{"exec.return_value": exec_mock})
mocker.patch("sqlmodel.Session", return_value=session_mock)
mocker.patch.object(logger, "info")
mocker.patch.object(logger, "error")
mocker.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."