72 lines
3.0 KiB
Python
72 lines
3.0 KiB
Python
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# Copyright (c) 2018 gevent community
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#
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# Permission is hereby granted, free of charge, to any person obtaining a copy
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# of this software and associated documentation files (the "Software"), to deal
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# in the Software without restriction, including without limitation the rights
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# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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# copies of the Software, and to permit persons to whom the Software is
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# furnished to do so, subject to the following conditions:
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#
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# The above copyright notice and this permission notice shall be included in
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# all copies or substantial portions of the Software.
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#
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# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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# THE SOFTWARE.
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from __future__ import absolute_import, print_function, division
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from contextlib import contextmanager
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from gevent.hub import Hub
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from .exception import ExpectedException
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class QuietHub(Hub):
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_resolver = None
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_threadpool = None
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EXPECTED_TEST_ERROR = (ExpectedException,)
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IGNORE_EXPECTED_TEST_ERROR = False
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@contextmanager
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def ignoring_expected_test_error(self):
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"""
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Code in the body of this context manager will ignore
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``EXPECTED_TEST_ERROR`` objects reported to ``handle_error``;
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they will not get a chance to go to the hub's parent.
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This completely changes the semantics of normal error handling
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by avoiding some switches (to the main greenlet, and eventually
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once a callback is processed, back to the hub). This should be used
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in narrow ways for test compatibility for tests that assume
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``ExpectedException`` objects behave this way.
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"""
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old = self.IGNORE_EXPECTED_TEST_ERROR
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self.IGNORE_EXPECTED_TEST_ERROR = True
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try:
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yield
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finally:
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self.IGNORE_EXPECTED_TEST_ERROR = old
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def handle_error(self, context, type, value, tb):
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type, value, tb = self._normalize_exception(type, value, tb)
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# If we check that the ``type`` is a subclass of ``EXPECTED_TEST_ERROR``,
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# and return, we completely change the semantics: We avoid raising
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# this error in the main greenlet, which cuts out several switches.
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# Overall, not good.
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if self.IGNORE_EXPECTED_TEST_ERROR and issubclass(type, self.EXPECTED_TEST_ERROR):
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# Don't pass these up; avoid switches
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return
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return Hub.handle_error(self, context, type, value, tb)
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def print_exception(self, context, t, v, tb):
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t, v, tb = self._normalize_exception(t, v, tb)
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if issubclass(t, self.EXPECTED_TEST_ERROR):
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# see handle_error
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return
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return Hub.print_exception(self, context, t, v, tb)
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