/usr/lib/python2.7/dist-packages/tooz/tests/test_postgresql.py is in python-tooz 1.40.0-4.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 | # -*- coding: utf-8 -*-
# Copyright (C) 2014 Yahoo! Inc. All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
import uuid
try:
# Added in python 3.3+
from unittest import mock
except ImportError:
import mock
from oslo_utils import encodeutils
import testtools
from testtools import testcase
from tooz import coordination
# Handle the case gracefully where the driver is not installed.
try:
import psycopg2
PGSQL_AVAILABLE = True
except ImportError:
PGSQL_AVAILABLE = False
@testtools.skipUnless(PGSQL_AVAILABLE, 'psycopg2 is not available')
class TestPostgreSQLFailures(testcase.TestCase):
# Not actually used (but required none the less), since we mock out
# the connect() method...
FAKE_URL = "postgresql://localhost:1"
def _create_coordinator(self):
def _safe_stop(coord):
try:
coord.stop()
except coordination.ToozError as e:
# TODO(harlowja): make this better, so that we don't have to
# do string checking...
message = encodeutils.exception_to_unicode(e)
if (message != 'Can not stop a driver which has not'
' been started'):
raise
coord = coordination.get_coordinator(self.FAKE_URL,
str(uuid.uuid4()).encode('ascii'))
self.addCleanup(_safe_stop, coord)
return coord
@mock.patch("tooz.drivers.pgsql.psycopg2.connect")
def test_connect_failure(self, psycopg2_connector):
psycopg2_connector.side_effect = psycopg2.Error("Broken")
c = self._create_coordinator()
self.assertRaises(coordination.ToozConnectionError, c.start)
@mock.patch("tooz.drivers.pgsql.psycopg2.connect")
def test_connect_failure_operational(self, psycopg2_connector):
psycopg2_connector.side_effect = psycopg2.OperationalError("Broken")
c = self._create_coordinator()
self.assertRaises(coordination.ToozConnectionError, c.start)
@mock.patch("tooz.drivers.pgsql.psycopg2.connect")
def test_failure_acquire_lock(self, psycopg2_connector):
execute_mock = mock.MagicMock()
execute_mock.execute.side_effect = psycopg2.OperationalError("Broken")
cursor_mock = mock.MagicMock()
cursor_mock.__enter__ = mock.MagicMock(return_value=execute_mock)
cursor_mock.__exit__ = mock.MagicMock(return_value=False)
conn_mock = mock.MagicMock()
conn_mock.cursor.return_value = cursor_mock
psycopg2_connector.return_value = conn_mock
c = self._create_coordinator()
c.start()
test_lock = c.get_lock(b'test-lock')
self.assertRaises(coordination.ToozError, test_lock.acquire)
@mock.patch("tooz.drivers.pgsql.psycopg2.connect")
def test_failure_release_lock(self, psycopg2_connector):
execute_mock = mock.MagicMock()
execute_mock.execute.side_effect = [
True,
psycopg2.OperationalError("Broken"),
]
cursor_mock = mock.MagicMock()
cursor_mock.__enter__ = mock.MagicMock(return_value=execute_mock)
cursor_mock.__exit__ = mock.MagicMock(return_value=False)
conn_mock = mock.MagicMock()
conn_mock.cursor.return_value = cursor_mock
psycopg2_connector.return_value = conn_mock
c = self._create_coordinator()
c.start()
test_lock = c.get_lock(b'test-lock')
self.assertTrue(test_lock.acquire())
self.assertRaises(coordination.ToozError, test_lock.release)
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