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b06779b177
The Python warnings.catch_warnings() functionality is not thread-safe (https://py-free-threading.github.io/porting/#the-warnings-module-is-not-thread-safe), so we cannot use it during tests that use free-threading. This change introduces a private warnings test helper (test_warning_util.py), which hooks the CPython warning infrastructure and uses it to implement thread-safe warnings infrastructure. This requires a handful of small modifications to tests to remove direct uses of the warnings module. We also sadly have to delete one TPU test that checks for a warning raised on another thread; there's no easy way for us to catch that in a thread-safe way, but that test seems like overkill anyway.
87 lines
3.1 KiB
Python
87 lines
3.1 KiB
Python
# Copyright 2024 The JAX Authors.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# https://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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import warnings
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from absl.testing import absltest
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from jax._src import config
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from jax._src import test_warning_util
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from jax._src import test_util as jtu
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config.parse_flags_with_absl()
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class WarningsUtilTest(jtu.JaxTestCase):
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@test_warning_util.raise_on_warnings()
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def test_warning_raises(self):
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with self.assertRaises(UserWarning, msg="hello"):
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warnings.warn("hello", category=UserWarning)
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with self.assertRaises(DeprecationWarning, msg="hello"):
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warnings.warn("hello", category=DeprecationWarning)
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@test_warning_util.raise_on_warnings()
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def test_ignore_warning(self):
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with test_warning_util.ignore_warning(message="h.*o"):
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warnings.warn("hello", category=UserWarning)
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with self.assertRaises(UserWarning, msg="hello"):
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with test_warning_util.ignore_warning(message="h.*o"):
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warnings.warn("goodbye", category=UserWarning)
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with test_warning_util.ignore_warning(category=UserWarning):
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warnings.warn("hello", category=UserWarning)
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with self.assertRaises(UserWarning, msg="hello"):
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with test_warning_util.ignore_warning(category=DeprecationWarning):
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warnings.warn("goodbye", category=UserWarning)
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def test_record_warning(self):
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with test_warning_util.record_warnings() as w:
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warnings.warn("hello", category=UserWarning)
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warnings.warn("goodbye", category=DeprecationWarning)
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self.assertLen(w, 2)
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self.assertIs(w[0].category, UserWarning)
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self.assertIn("hello", str(w[0].message))
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self.assertIs(w[1].category, DeprecationWarning)
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self.assertIn("goodbye", str(w[1].message))
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def test_record_warning_nested(self):
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with test_warning_util.record_warnings() as w:
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warnings.warn("aa", category=UserWarning)
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with test_warning_util.record_warnings() as v:
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warnings.warn("bb", category=UserWarning)
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warnings.warn("cc", category=DeprecationWarning)
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self.assertLen(w, 2)
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self.assertIs(w[0].category, UserWarning)
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self.assertIn("aa", str(w[0].message))
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self.assertIs(w[1].category, DeprecationWarning)
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self.assertIn("cc", str(w[1].message))
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self.assertLen(v, 1)
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self.assertIs(v[0].category, UserWarning)
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self.assertIn("bb", str(v[0].message))
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def test_raises_warning(self):
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with self.assertRaises(UserWarning, msg="hello"):
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with test_warning_util.ignore_warning():
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with test_warning_util.raise_on_warnings():
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warnings.warn("hello", category=UserWarning)
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if __name__ == '__main__':
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absltest.main(testLoader=jtu.JaxTestLoader())
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