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# testing/warnings.py
# Copyright (C) 2005-2021 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

from __future__ import absolute_import

import warnings

from . import assertions
from .. import exc as sa_exc


def setup_filters():
    """Set global warning behavior for the test suite."""

    warnings.filterwarnings(
        "ignore", category=sa_exc.SAPendingDeprecationWarning
    )
    warnings.filterwarnings("error", category=sa_exc.SADeprecationWarning)
    warnings.filterwarnings("error", category=sa_exc.SAWarning)

    warnings.filterwarnings(
        "ignore",
        category=sa_exc.SAWarning,
        message=r"Oracle version .* is known to have a " "maximum identifier",
    )

    # some selected deprecations...
    warnings.filterwarnings("error", category=DeprecationWarning)
    warnings.filterwarnings(
        "ignore", category=DeprecationWarning, message=".*StopIteration"
    )
    warnings.filterwarnings(
        "ignore", category=DeprecationWarning, message=".*inspect.getargspec"
    )

    try:
        import pytest
    except ImportError:
        pass
    else:
        warnings.filterwarnings(
            "once", category=pytest.PytestDeprecationWarning
        )


def assert_warnings(fn, warning_msgs, regex=False):
    """Assert that each of the given warnings are emitted by fn.

    Deprecated.  Please use assertions.expect_warnings().

    """

    with assertions._expect_warnings(
        sa_exc.SAWarning, warning_msgs, regex=regex
    ):
        return fn()