python/adbc_driver_postgresql/tests/test_lowlevel.py

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import typing

import pyarrow
import pytest

import adbc_driver_manager
import adbc_driver_postgresql


@pytest.fixture
def postgres(
    postgres_uri: str,
) -> typing.Generator[adbc_driver_manager.AdbcConnection, None, None]:
    with adbc_driver_postgresql.connect(postgres_uri) as db:
        with adbc_driver_manager.AdbcConnection(db) as conn:
            yield conn


def test_connection_get_table_schema(postgres: adbc_driver_manager.AdbcConnection):
    with pytest.raises(adbc_driver_manager.ProgrammingError, match="NOT_FOUND"):
        postgres.get_table_schema(None, None, "thistabledoesnotexist")


def test_query_trivial(postgres: adbc_driver_manager.AdbcConnection) -> None:
    with adbc_driver_manager.AdbcStatement(postgres) as stmt:
        stmt.set_sql_query("SELECT 1")
        stream, _ = stmt.execute_query()
        with pyarrow.RecordBatchReader._import_from_c(stream.address) as reader:
            assert reader.read_all()


def test_version() -> None:
    assert adbc_driver_postgresql.__version__  # type:ignore


def test_failed_connection() -> None:
    with pytest.raises(
        adbc_driver_manager.OperationalError, match=".*libpq.*Failed to connect.*"
    ):
        adbc_driver_postgresql.connect("invalid")