from database.manager import DatabaseManager


def test_database_manager_reuses_engine_for_same_sqlite_path(tmp_path):
    DatabaseManager._instance_cache.clear()
    db_url = f"sqlite:///{tmp_path / 'cache.db'}"

    first = DatabaseManager(db_url)
    second = DatabaseManager(db_url)

    try:
        assert second.engine is first.engine
        assert second.Session is first.Session
    finally:
        DatabaseManager._instance_cache.clear()
        first.engine.dispose()