114 lines
3.9 KiB
Python
114 lines
3.9 KiB
Python
# Copyright 2013 Red Hat, Inc.
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# All Rights Reserved.
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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 sys
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from unittest import mock
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from six import moves
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from neutron.tests import base
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from neutron.tests import post_mortem_debug
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class TestTesttoolsExceptionHandler(base.BaseTestCase):
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def test_exception_handler(self):
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try:
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self.fail()
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except Exception:
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exc_info = sys.exc_info()
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with mock.patch('traceback.print_exception') as mock_print_exception:
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with mock.patch('pdb.post_mortem') as mock_post_mortem:
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with mock.patch.object(post_mortem_debug,
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'get_ignored_traceback',
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return_value=mock.Mock()):
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post_mortem_debug.get_exception_handler('pdb')(exc_info)
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# traceback will become post_mortem_debug.FilteredTraceback
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filtered_exc_info = (exc_info[0], exc_info[1], mock.ANY)
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mock_print_exception.assert_called_once_with(*filtered_exc_info)
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mock_post_mortem.assert_called_once_with(mock.ANY)
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def test__get_debugger(self):
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def import_mock(name, *args):
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mod_mock = mock.Mock()
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mod_mock.__name__ = name
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mod_mock.post_mortem = mock.Mock()
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return mod_mock
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with mock.patch('six.moves.builtins.__import__',
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side_effect=import_mock):
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pdb_debugger = post_mortem_debug._get_debugger('pdb')
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pudb_debugger = post_mortem_debug._get_debugger('pudb')
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self.assertEqual('pdb', pdb_debugger.__name__)
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self.assertEqual('pudb', pudb_debugger.__name__)
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class TestFilteredTraceback(base.BaseTestCase):
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def test_filter_traceback(self):
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tb1 = mock.Mock()
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tb2 = mock.Mock()
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tb1.tb_next = tb2
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tb2.tb_next = None
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ftb1 = post_mortem_debug.FilteredTraceback(tb1, tb2)
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for attr in ['lasti', 'lineno', 'frame']:
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attr_name = 'tb_%s' % attr
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self.assertEqual(getattr(tb1, attr_name, None),
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getattr(ftb1, attr_name, None))
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self.assertIsNone(ftb1.tb_next)
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class TestGetIgnoredTraceback(base.BaseTestCase):
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def _test_get_ignored_traceback(self, ignored_bit_array, expected):
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root_tb = mock.Mock()
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tb = root_tb
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tracebacks = [tb]
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for x in moves.range(len(ignored_bit_array) - 1):
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tb.tb_next = mock.Mock()
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tb = tb.tb_next
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tracebacks.append(tb)
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tb.tb_next = None
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tb = root_tb
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for ignored in ignored_bit_array:
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if ignored:
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tb.tb_frame.f_globals = ['__unittest']
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else:
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tb.tb_frame.f_globals = []
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tb = tb.tb_next
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actual = post_mortem_debug.get_ignored_traceback(root_tb)
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if expected is not None:
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expected = tracebacks[expected]
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self.assertEqual(expected, actual)
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def test_no_ignored_tracebacks(self):
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self._test_get_ignored_traceback([0, 0, 0], None)
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def test_single_member_trailing_chain(self):
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self._test_get_ignored_traceback([0, 0, 1], 2)
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def test_two_member_trailing_chain(self):
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self._test_get_ignored_traceback([0, 1, 1], 1)
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def test_first_traceback_ignored(self):
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self._test_get_ignored_traceback([1, 0, 0], None)
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def test_middle_traceback_ignored(self):
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self._test_get_ignored_traceback([0, 1, 0], None)
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