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# testing/warnings.py
# Copyright (C) 2005-2022 the SQLAlchemy authors and contributors
# <see AUTHORS file>
#
# This module is part of SQLAlchemy and is released under
# the MIT License: https://www.opensource.org/licenses/mit-license.php
from __future__ import absolute_import
import warnings
from . import assertions
from .. import exc as sa_exc
from ..util.langhelpers import _warnings_warn
class SATestSuiteWarning(Warning):
"""warning for a condition detected during tests that is non-fatal
Currently outside of SAWarning so that we can work around tools like
Alembic doing the wrong thing with warnings.
"""
def warn_test_suite(message):
_warnings_warn(message, category=SATestSuiteWarning)
def setup_filters():
"""Set global warning behavior for the test suite."""
# TODO: at this point we can use the normal pytest warnings plugin,
# if we decide the test suite can be linked to pytest only
origin = r"^(?:test|sqlalchemy)\..*"
warnings.filterwarnings(
"ignore", category=sa_exc.SAPendingDeprecationWarning
)
warnings.filterwarnings("error", category=sa_exc.SADeprecationWarning)
warnings.filterwarnings("error", category=sa_exc.SAWarning)
warnings.filterwarnings("always", category=SATestSuiteWarning)
warnings.filterwarnings(
"error", category=DeprecationWarning, module=origin
)
# ignore things that are deprecated *as of* 2.0 :)
warnings.filterwarnings(
"ignore",
category=sa_exc.SADeprecationWarning,
message=r".*\(deprecated since: 2.0\)$",
)
warnings.filterwarnings(
"ignore",
category=sa_exc.SADeprecationWarning,
message=r"^The (Sybase|firebird) dialect is deprecated and will be",
)
try:
import pytest
except ImportError:
pass
else:
warnings.filterwarnings(
"once", category=pytest.PytestDeprecationWarning, module=origin
)
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()
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