674 lines
23 KiB
Python
674 lines
23 KiB
Python
# Copyright 2012, Red Hat, Inc.
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://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, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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import logging
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from unittest import mock
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import fixtures
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from oslotest import base as test_base
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from oslo_utils import excutils
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from oslo_utils import timeutils
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class Fail1(excutils.CausedByException):
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pass
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class Fail2(excutils.CausedByException):
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pass
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class CausedByTest(test_base.BaseTestCase):
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def test_caused_by_explicit(self):
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e = self.assertRaises(Fail1,
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excutils.raise_with_cause,
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Fail1, "I was broken",
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cause=Fail2("I have been broken"))
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self.assertIsInstance(e.cause, Fail2)
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e_p = e.pformat()
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self.assertIn("I have been broken", e_p)
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self.assertIn("Fail2", e_p)
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def test_caused_by_implicit(self):
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def raises_chained():
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try:
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raise Fail2("I have been broken")
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except Fail2:
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excutils.raise_with_cause(Fail1, "I was broken")
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e = self.assertRaises(Fail1, raises_chained)
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self.assertIsInstance(e.cause, Fail2)
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e_p = e.pformat()
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self.assertIn("I have been broken", e_p)
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self.assertIn("Fail2", e_p)
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class SaveAndReraiseTest(test_base.BaseTestCase):
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def test_save_and_reraise_exception_forced(self):
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def _force_reraise():
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try:
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raise IOError("I broke")
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except Exception:
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with excutils.save_and_reraise_exception() as e:
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e.reraise = False
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e.force_reraise()
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self.assertRaises(IOError, _force_reraise)
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def test_save_and_reraise_exception_capture_reraise(self):
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def _force_reraise():
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try:
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raise IOError("I broke")
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except Exception:
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excutils.save_and_reraise_exception().capture().force_reraise()
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self.assertRaises(IOError, _force_reraise)
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def test_save_and_reraise_exception_capture_not_active(self):
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e = excutils.save_and_reraise_exception()
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self.assertRaises(RuntimeError, e.capture, check=True)
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def test_save_and_reraise_exception_forced_not_active(self):
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e = excutils.save_and_reraise_exception()
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self.assertRaises(RuntimeError, e.force_reraise)
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e = excutils.save_and_reraise_exception()
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e.capture(check=False)
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self.assertRaises(RuntimeError, e.force_reraise)
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def test_save_and_reraise_exception(self):
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e = None
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msg = 'foo'
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try:
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try:
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raise Exception(msg)
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except Exception:
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with excutils.save_and_reraise_exception():
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pass
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except Exception as _e:
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e = _e
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self.assertEqual(str(e), msg)
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@mock.patch('logging.getLogger')
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def test_save_and_reraise_exception_dropped(self, get_logger_mock):
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logger = get_logger_mock()
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e = None
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msg = 'second exception'
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try:
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try:
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raise Exception('dropped')
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except Exception:
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with excutils.save_and_reraise_exception():
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raise Exception(msg)
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except Exception as _e:
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e = _e
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self.assertEqual(str(e), msg)
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self.assertTrue(logger.error.called)
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def test_save_and_reraise_exception_no_reraise(self):
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"""Test that suppressing the reraise works."""
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try:
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raise Exception('foo')
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except Exception:
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with excutils.save_and_reraise_exception() as ctxt:
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ctxt.reraise = False
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@mock.patch('logging.getLogger')
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def test_save_and_reraise_exception_dropped_no_reraise(self,
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get_logger_mock):
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logger = get_logger_mock()
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e = None
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msg = 'second exception'
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try:
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try:
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raise Exception('dropped')
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except Exception:
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with excutils.save_and_reraise_exception(reraise=False):
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raise Exception(msg)
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except Exception as _e:
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e = _e
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self.assertEqual(str(e), msg)
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self.assertFalse(logger.error.called)
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def test_save_and_reraise_exception_provided_logger(self):
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fake_logger = mock.MagicMock()
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try:
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try:
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raise Exception('foo')
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except Exception:
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with excutils.save_and_reraise_exception(logger=fake_logger):
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raise Exception('second exception')
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except Exception:
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pass
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self.assertTrue(fake_logger.error.called)
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class ForeverRetryUncaughtExceptionsTest(test_base.BaseTestCase):
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def setUp(self):
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super(ForeverRetryUncaughtExceptionsTest, self).setUp()
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self._exceptions = []
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self.useFixture(fixtures.MockPatch('time.sleep', return_value=None))
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@excutils.forever_retry_uncaught_exceptions
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def exception_generator(self):
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while self._exceptions:
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raise self._exceptions.pop(0)
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@mock.patch.object(logging, 'exception')
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@mock.patch.object(timeutils, 'now')
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def test_exc_retrier_1exc_gives_1log(self, mock_now, mock_log):
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self._exceptions = [
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Exception('unexpected %d' % 1),
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]
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mock_now.side_effect = [0]
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self.exception_generator()
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self.assertEqual([], self._exceptions)
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# log should only be called once
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mock_log.assert_called_once_with(
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'Unexpected exception occurred %d time(s)... retrying.' % 1
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)
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mock_now.assert_has_calls([
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mock.call(),
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])
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@mock.patch.object(logging, 'exception')
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@mock.patch.object(timeutils, 'now')
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def test_exc_retrier_same_10exc_1min_gives_1log(self, mock_now, mock_log):
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self._exceptions = [
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Exception('unexpected 1'),
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]
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# Timestamp calls that happen after the logging is possibly triggered.
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mock_now_side_effect = [0]
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# By design, the following exceptions won't get logged because they
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# are within the same minute.
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for i in range(2, 11):
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self._exceptions.append(Exception('unexpected 1'))
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# Timestamp calls that happen before the logging is possibly
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# triggered.
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mock_now_side_effect.append(i)
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mock_now.side_effect = mock_now_side_effect
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self.exception_generator()
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self.assertEqual([], self._exceptions)
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self.assertEqual(10, len(mock_now.mock_calls))
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self.assertEqual(1, len(mock_log.mock_calls))
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mock_log.assert_has_calls([
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mock.call('Unexpected exception occurred 1 time(s)... retrying.'),
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])
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@mock.patch.object(logging, 'exception')
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@mock.patch.object(timeutils, 'now')
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def test_exc_retrier_same_2exc_2min_gives_2logs(self, mock_now, mock_log):
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self._exceptions = [
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Exception('unexpected 1'),
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Exception('unexpected 1'),
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]
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mock_now.side_effect = [
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# Timestamp calls that happen after the logging is possibly
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# triggered
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0,
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# Timestamp calls that happen before the logging is possibly
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# triggered
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65,
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# Timestamp calls that happen after the logging is possibly
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# triggered.
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65,
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66,
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]
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self.exception_generator()
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self.assertEqual([], self._exceptions)
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self.assertEqual(4, len(mock_now.mock_calls))
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self.assertEqual(2, len(mock_log.mock_calls))
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mock_log.assert_has_calls([
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mock.call('Unexpected exception occurred 1 time(s)... retrying.'),
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mock.call('Unexpected exception occurred 1 time(s)... retrying.'),
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])
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@mock.patch.object(logging, 'exception')
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@mock.patch.object(timeutils, 'now')
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def test_exc_retrier_same_10exc_2min_gives_2logs(self, mock_now, mock_log):
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self._exceptions = [
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Exception('unexpected 1'),
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]
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# Timestamp calls that happen after the logging is possibly triggered.
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mock_now_side_effect = [
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0,
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]
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for ts in [12, 23, 34, 45]:
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self._exceptions.append(Exception('unexpected 1'))
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# Timestamp calls that happen before the logging is possibly
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# triggered.
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mock_now_side_effect.append(ts)
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# The previous 4 exceptions are counted here
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self._exceptions.append(Exception('unexpected 1'))
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# Timestamp calls that happen before the logging is possibly triggered.
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mock_now_side_effect.append(106)
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for ts in [106, 107]:
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# Timestamp calls that happen after the logging is possibly
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# triggered.
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mock_now_side_effect.append(ts)
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# Again, the following are not logged due to being within
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# the same minute
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for ts in [117, 128, 139, 150]:
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self._exceptions.append(Exception('unexpected 1'))
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# Timestamp calls that happen before the logging is possibly
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# triggered.
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mock_now_side_effect.append(ts)
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mock_now.side_effect = mock_now_side_effect
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self.exception_generator()
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self.assertEqual([], self._exceptions)
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self.assertEqual(12, len(mock_now.mock_calls))
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self.assertEqual(2, len(mock_log.mock_calls))
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mock_log.assert_has_calls([
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mock.call('Unexpected exception occurred 1 time(s)... retrying.'),
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mock.call('Unexpected exception occurred 5 time(s)... retrying.'),
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])
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@mock.patch.object(logging, 'exception')
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@mock.patch.object(timeutils, 'now')
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def test_exc_retrier_mixed_4exc_1min_gives_2logs(self, mock_now, mock_log):
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# The stop watch will be started, which will consume one timestamp
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# call.
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self._exceptions = [
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Exception('unexpected 1'),
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]
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# Timestamp calls that happen after the logging is possibly
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# triggered.
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mock_now_side_effect = [0]
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# By design, this second 'unexpected 1' exception is not counted. This
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# is likely a rare thing and is a sacrifice for code simplicity.
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self._exceptions.append(Exception('unexpected 1'))
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# Timestamp calls that happen before the logging is possibly triggered.
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# Since the exception will be the same the expiry method will be
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# called, which uses up a timestamp call.
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mock_now_side_effect.append(5)
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self._exceptions.append(Exception('unexpected 2'))
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# Timestamp calls that happen after the logging is possibly triggered.
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# The watch should get reset, which uses up two timestamp calls.
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mock_now_side_effect.extend([10, 20])
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self._exceptions.append(Exception('unexpected 2'))
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# Timestamp calls that happen before the logging is possibly triggered.
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# Since the exception will be the same the expiry method will be
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# called, which uses up a timestamp call.
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mock_now_side_effect.append(25)
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mock_now.side_effect = mock_now_side_effect
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self.exception_generator()
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self.assertEqual([], self._exceptions)
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self.assertEqual(5, len(mock_now.mock_calls))
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self.assertEqual(2, len(mock_log.mock_calls))
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mock_log.assert_has_calls([
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mock.call('Unexpected exception occurred 1 time(s)... retrying.'),
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mock.call('Unexpected exception occurred 1 time(s)... retrying.'),
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])
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@mock.patch.object(logging, 'exception')
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@mock.patch.object(timeutils, 'now')
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def test_exc_retrier_mixed_4exc_2min_gives_2logs(self, mock_now, mock_log):
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self._exceptions = [
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Exception('unexpected 1'),
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]
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# Timestamp calls that happen after the logging is possibly triggered.
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mock_now_side_effect = [0]
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# Again, this second exception of the same type is not counted
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# for the sake of code simplicity.
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self._exceptions.append(Exception('unexpected 1'))
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# Timestamp calls that happen before the logging is possibly triggered.
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mock_now_side_effect.append(10)
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# The difference between this and the previous case is the log
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# is also triggered by more than a minute expiring.
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self._exceptions.append(Exception('unexpected 2'))
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# Timestamp calls that happen after the logging is possibly triggered.
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mock_now_side_effect.extend([100, 105])
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self._exceptions.append(Exception('unexpected 2'))
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# Timestamp calls that happen before the logging is possibly triggered.
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mock_now_side_effect.append(110)
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mock_now.side_effect = mock_now_side_effect
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self.exception_generator()
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self.assertEqual([], self._exceptions)
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self.assertEqual(5, len(mock_now.mock_calls))
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self.assertEqual(2, len(mock_log.mock_calls))
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mock_log.assert_has_calls([
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mock.call('Unexpected exception occurred 1 time(s)... retrying.'),
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mock.call('Unexpected exception occurred 1 time(s)... retrying.'),
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])
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@mock.patch.object(logging, 'exception')
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@mock.patch.object(timeutils, 'now')
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def test_exc_retrier_mixed_4exc_2min_gives_3logs(self, mock_now, mock_log):
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self._exceptions = [
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Exception('unexpected 1'),
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]
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# Timestamp calls that happen after the logging is possibly triggered.
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mock_now_side_effect = [0]
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# This time the second 'unexpected 1' exception is counted due
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# to the same exception occurring same when the minute expires.
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self._exceptions.append(Exception('unexpected 1'))
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# Timestamp calls that happen before the logging is possibly triggered.
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mock_now_side_effect.append(10)
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self._exceptions.append(Exception('unexpected 1'))
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# Timestamp calls that happen before the logging is possibly triggered.
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mock_now_side_effect.extend([100, 100, 105])
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self._exceptions.append(Exception('unexpected 2'))
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# Timestamp calls that happen after the logging is possibly triggered.
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mock_now_side_effect.extend([110, 111])
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mock_now.side_effect = mock_now_side_effect
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self.exception_generator()
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self.assertEqual([], self._exceptions)
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self.assertEqual(7, len(mock_now.mock_calls))
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self.assertEqual(3, len(mock_log.mock_calls))
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mock_log.assert_has_calls([
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mock.call('Unexpected exception occurred 1 time(s)... retrying.'),
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mock.call('Unexpected exception occurred 2 time(s)... retrying.'),
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mock.call('Unexpected exception occurred 1 time(s)... retrying.'),
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])
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class ExceptionFilterTest(test_base.BaseTestCase):
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def _make_filter_func(self, ignore_classes=AssertionError):
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@excutils.exception_filter
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def ignore_exceptions(ex):
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'''Ignore some exceptions F.'''
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return isinstance(ex, ignore_classes)
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return ignore_exceptions
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def _make_filter_method(self, ignore_classes=AssertionError):
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class ExceptionIgnorer(object):
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def __init__(self, ignore):
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self.ignore = ignore
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@excutils.exception_filter
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def ignore_exceptions(self, ex):
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'''Ignore some exceptions M.'''
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return isinstance(ex, self.ignore)
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return ExceptionIgnorer(ignore_classes).ignore_exceptions
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def _make_filter_classmethod(self, ignore_classes=AssertionError):
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class ExceptionIgnorer(object):
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ignore = ignore_classes
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@excutils.exception_filter
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@classmethod
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def ignore_exceptions(cls, ex):
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'''Ignore some exceptions C.'''
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return isinstance(ex, cls.ignore)
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return ExceptionIgnorer.ignore_exceptions
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def _make_filter_staticmethod(self, ignore_classes=AssertionError):
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class ExceptionIgnorer(object):
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@excutils.exception_filter
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@staticmethod
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def ignore_exceptions(ex):
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'''Ignore some exceptions S.'''
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return isinstance(ex, ignore_classes)
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return ExceptionIgnorer.ignore_exceptions
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def test_filter_func_call(self):
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ignore_assertion_error = self._make_filter_func()
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try:
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assert False, "This is a test"
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except Exception as exc:
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ignore_assertion_error(exc)
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def test_raise_func_call(self):
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ignore_assertion_error = self._make_filter_func()
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try:
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raise RuntimeError
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except Exception as exc:
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self.assertRaises(RuntimeError, ignore_assertion_error, exc)
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def test_raise_previous_func_call(self):
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ignore_assertion_error = self._make_filter_func()
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try:
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raise RuntimeError
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except Exception as exc1:
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try:
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raise RuntimeError
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except Exception as exc2:
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self.assertIsNot(exc1, exc2)
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raised = self.assertRaises(RuntimeError,
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ignore_assertion_error,
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exc1)
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self.assertIs(exc1, raised)
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def test_raise_previous_after_filtered_func_call(self):
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ignore_assertion_error = self._make_filter_func()
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try:
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raise RuntimeError
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except Exception as exc1:
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try:
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assert False, "This is a test"
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except Exception:
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pass
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self.assertRaises(RuntimeError, ignore_assertion_error, exc1)
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def test_raise_other_func_call(self):
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@excutils.exception_filter
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def translate_exceptions(ex):
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raise RuntimeError
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try:
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assert False, "This is a test"
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except Exception as exc:
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self.assertRaises(RuntimeError, translate_exceptions, exc)
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def test_filter_func_context_manager(self):
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ignore_assertion_error = self._make_filter_func()
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with ignore_assertion_error:
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assert False, "This is a test"
|
|
|
|
def test_raise_func_context_manager(self):
|
|
ignore_assertion_error = self._make_filter_func()
|
|
|
|
def try_runtime_err():
|
|
with ignore_assertion_error:
|
|
raise RuntimeError
|
|
|
|
self.assertRaises(RuntimeError, try_runtime_err)
|
|
|
|
def test_raise_other_func_context_manager(self):
|
|
@excutils.exception_filter
|
|
def translate_exceptions(ex):
|
|
raise RuntimeError
|
|
|
|
def try_assertion():
|
|
with translate_exceptions:
|
|
assert False, "This is a test"
|
|
|
|
self.assertRaises(RuntimeError, try_assertion)
|
|
|
|
def test_noexc_func_context_manager(self):
|
|
ignore_assertion_error = self._make_filter_func()
|
|
|
|
with ignore_assertion_error:
|
|
pass
|
|
|
|
def test_noexc_nocall_func_context_manager(self):
|
|
@excutils.exception_filter
|
|
def translate_exceptions(ex):
|
|
raise RuntimeError
|
|
|
|
with translate_exceptions:
|
|
pass
|
|
|
|
def test_func_docstring(self):
|
|
ignore_func = self._make_filter_func()
|
|
self.assertEqual('Ignore some exceptions F.', ignore_func.__doc__)
|
|
|
|
def test_filter_method_call(self):
|
|
ignore_assertion_error = self._make_filter_method()
|
|
|
|
try:
|
|
assert False, "This is a test"
|
|
except Exception as exc:
|
|
ignore_assertion_error(exc)
|
|
|
|
def test_raise_method_call(self):
|
|
ignore_assertion_error = self._make_filter_method()
|
|
|
|
try:
|
|
raise RuntimeError
|
|
except Exception as exc:
|
|
self.assertRaises(RuntimeError, ignore_assertion_error, exc)
|
|
|
|
def test_filter_method_context_manager(self):
|
|
ignore_assertion_error = self._make_filter_method()
|
|
|
|
with ignore_assertion_error:
|
|
assert False, "This is a test"
|
|
|
|
def test_raise_method_context_manager(self):
|
|
ignore_assertion_error = self._make_filter_method()
|
|
|
|
def try_runtime_err():
|
|
with ignore_assertion_error:
|
|
raise RuntimeError
|
|
|
|
self.assertRaises(RuntimeError, try_runtime_err)
|
|
|
|
def test_method_docstring(self):
|
|
ignore_func = self._make_filter_method()
|
|
self.assertEqual('Ignore some exceptions M.', ignore_func.__doc__)
|
|
|
|
def test_filter_classmethod_call(self):
|
|
ignore_assertion_error = self._make_filter_classmethod()
|
|
|
|
try:
|
|
assert False, "This is a test"
|
|
except Exception as exc:
|
|
ignore_assertion_error(exc)
|
|
|
|
def test_raise_classmethod_call(self):
|
|
ignore_assertion_error = self._make_filter_classmethod()
|
|
|
|
try:
|
|
raise RuntimeError
|
|
except Exception as exc:
|
|
self.assertRaises(RuntimeError, ignore_assertion_error, exc)
|
|
|
|
def test_filter_classmethod_context_manager(self):
|
|
ignore_assertion_error = self._make_filter_classmethod()
|
|
|
|
with ignore_assertion_error:
|
|
assert False, "This is a test"
|
|
|
|
def test_raise_classmethod_context_manager(self):
|
|
ignore_assertion_error = self._make_filter_classmethod()
|
|
|
|
def try_runtime_err():
|
|
with ignore_assertion_error:
|
|
raise RuntimeError
|
|
|
|
self.assertRaises(RuntimeError, try_runtime_err)
|
|
|
|
def test_classmethod_docstring(self):
|
|
ignore_func = self._make_filter_classmethod()
|
|
self.assertEqual('Ignore some exceptions C.', ignore_func.__doc__)
|
|
|
|
def test_filter_staticmethod_call(self):
|
|
ignore_assertion_error = self._make_filter_staticmethod()
|
|
|
|
try:
|
|
assert False, "This is a test"
|
|
except Exception as exc:
|
|
ignore_assertion_error(exc)
|
|
|
|
def test_raise_staticmethod_call(self):
|
|
ignore_assertion_error = self._make_filter_staticmethod()
|
|
|
|
try:
|
|
raise RuntimeError
|
|
except Exception as exc:
|
|
self.assertRaises(RuntimeError, ignore_assertion_error, exc)
|
|
|
|
def test_filter_staticmethod_context_manager(self):
|
|
ignore_assertion_error = self._make_filter_staticmethod()
|
|
|
|
with ignore_assertion_error:
|
|
assert False, "This is a test"
|
|
|
|
def test_raise_staticmethod_context_manager(self):
|
|
ignore_assertion_error = self._make_filter_staticmethod()
|
|
|
|
def try_runtime_err():
|
|
with ignore_assertion_error:
|
|
raise RuntimeError
|
|
|
|
self.assertRaises(RuntimeError, try_runtime_err)
|
|
|
|
def test_staticmethod_docstring(self):
|
|
ignore_func = self._make_filter_staticmethod()
|
|
self.assertEqual('Ignore some exceptions S.', ignore_func.__doc__)
|