def test_sqlite_product_fetch_metadata_none_if_not_exists(tmp_directory): tmp = Path(tmp_directory) conn = SQLAlchemyClient('sqlite:///{}'.format(tmp / "database.db")) numbers = SQLiteRelation((None, 'numbers', 'table'), conn) numbers.render({}) assert numbers.fetch_metadata() is None
def test_sqlite_product_fetch_metadata_none_if_empty_metadata(tmp_directory): tmp = Path(tmp_directory) conn = SQLAlchemyClient('sqlite:///{}'.format(tmp / "database.db")) df = pd.DataFrame({'a': np.arange(0, 100), 'b': np.arange(100, 200)}) df.to_sql('numbers', conn.engine) numbers = SQLiteRelation((None, 'numbers', 'table'), conn) numbers.render({}) assert numbers.fetch_metadata() is None
def test_sqlite_product_save_metadata(tmp_directory): tmp = Path(tmp_directory) conn = SQLAlchemyClient('sqlite:///{}'.format(tmp / "database.db")) numbers = SQLiteRelation((None, 'numbers', 'table'), conn) numbers.render({}) numbers.metadata['timestamp'] = datetime.now().timestamp() numbers.metadata['stored_source_code'] = 'some code' numbers.save_metadata() fetched = numbers.fetch_metadata() assert fetched == numbers.metadata