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# testing/engines.py
# Copyright (C) 2005-2014 the SQLAlchemy authors and contributors
# <see AUTHORS file>
#
# This module is part of SQLAlchemy and is released under
# the MIT License: http://www.opensource.org/licenses/mit-license.php
"""NOTE:  copied/adapted from SQLAlchemy master for backwards compatibility;
   this should be removable when Alembic targets SQLAlchemy 1.0.0.
"""

from __future__ import absolute_import

from . import config


def testing_engine(url=None, options=None):
    """Produce an engine configured by --options with optional overrides."""

    from sqlalchemy import create_engine

    url = url or config.db.url
    if options is None:
        options = config.db_opts

    engine = create_engine(url, **options)

    return engine