# This file is part of the Open Parts Database software
# Copyright (C) 2022  Valentin Lorentz
#
# This program is free software: you can redistribute it and/or modify it under the
# terms of the GNU Affero General Public License version 3, as published by the
# Free Software Foundation.
#
# This program is distributed in the hope that it will be useful, but WITHOUT ANY
# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
# PARTICULAR PURPOSE.  See the GNU Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public License along with
# this program.  If not, see <http://www.gnu.org/licenses/>.

"""
pytest fixtures
"""

import pytest

from opdb.db import Db


def iter_subclasses(cls):
    """
    Recursively yields all subclasses of a class.
    """
    yield cls
    for subcls in cls.__subclasses__():
        yield from iter_subclasses(subcls)


@pytest.fixture
def opdb_db(postgresql) -> Db:
    """
    pytest fixture which yields an empty initialized OPDB database.
    """
    db = Db(postgresql)
    db.init()
    return db