335 lines
12 KiB
Python
335 lines
12 KiB
Python
# Copyright 2010 United States Government as represented by the
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# Administrator of the National Aeronautics and Space Administration.
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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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"""Base classes for our unit tests.
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Allows overriding of CONF for use of fakes, and some black magic for
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inline callbacks.
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"""
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import logging
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import os
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import shutil
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import tempfile
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import uuid
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import fixtures
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import mock
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import mox
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from oslo.config import cfg
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from oslo.messaging import conffixture as messaging_conffixture
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import stubout
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import testtools
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from testtools import matchers
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from cinder.common import config # noqa Need to register global_opts
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from cinder.db import migration
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from cinder.db.sqlalchemy import api as sqla_api
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from cinder.openstack.common import log as oslo_logging
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from cinder.openstack.common import strutils
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from cinder.openstack.common import timeutils
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from cinder import rpc
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from cinder import service
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from cinder.tests import conf_fixture
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from cinder.tests import fake_notifier
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test_opts = [
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cfg.StrOpt('sqlite_clean_db',
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default='clean.sqlite',
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help='File name of clean sqlite db'), ]
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CONF = cfg.CONF
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CONF.register_opts(test_opts)
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LOG = oslo_logging.getLogger(__name__)
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_DB_CACHE = None
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class TestingException(Exception):
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pass
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class Database(fixtures.Fixture):
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def __init__(self, db_api, db_migrate, sql_connection,
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sqlite_db, sqlite_clean_db):
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self.sql_connection = sql_connection
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self.sqlite_db = sqlite_db
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self.sqlite_clean_db = sqlite_clean_db
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self.engine = db_api.get_engine()
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self.engine.dispose()
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conn = self.engine.connect()
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if sql_connection == "sqlite://":
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if db_migrate.db_version() > db_migrate.db_initial_version():
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return
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else:
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testdb = os.path.join(CONF.state_path, sqlite_db)
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if os.path.exists(testdb):
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return
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db_migrate.db_sync()
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# self.post_migrations()
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if sql_connection == "sqlite://":
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conn = self.engine.connect()
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self._DB = "".join(line for line in conn.connection.iterdump())
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self.engine.dispose()
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else:
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cleandb = os.path.join(CONF.state_path, sqlite_clean_db)
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shutil.copyfile(testdb, cleandb)
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def setUp(self):
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super(Database, self).setUp()
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if self.sql_connection == "sqlite://":
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conn = self.engine.connect()
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conn.connection.executescript(self._DB)
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self.addCleanup(self.engine.dispose)
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else:
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shutil.copyfile(
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os.path.join(CONF.state_path, self.sqlite_clean_db),
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os.path.join(CONF.state_path, self.sqlite_db))
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class TestCase(testtools.TestCase):
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"""Test case base class for all unit tests."""
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def setUp(self):
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"""Run before each test method to initialize test environment."""
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super(TestCase, self).setUp()
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test_timeout = os.environ.get('OS_TEST_TIMEOUT', 0)
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try:
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test_timeout = int(test_timeout)
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except ValueError:
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# If timeout value is invalid do not set a timeout.
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test_timeout = 0
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if test_timeout > 0:
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self.useFixture(fixtures.Timeout(test_timeout, gentle=True))
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self.useFixture(fixtures.NestedTempfile())
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self.useFixture(fixtures.TempHomeDir())
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environ_enabled = (lambda var_name:
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strutils.bool_from_string(os.environ.get(var_name)))
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if environ_enabled('OS_STDOUT_CAPTURE'):
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stdout = self.useFixture(fixtures.StringStream('stdout')).stream
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self.useFixture(fixtures.MonkeyPatch('sys.stdout', stdout))
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if environ_enabled('OS_STDERR_CAPTURE'):
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stderr = self.useFixture(fixtures.StringStream('stderr')).stream
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self.useFixture(fixtures.MonkeyPatch('sys.stderr', stderr))
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if environ_enabled('OS_LOG_CAPTURE'):
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log_format = '%(levelname)s [%(name)s] %(message)s'
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if environ_enabled('OS_DEBUG'):
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level = logging.DEBUG
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else:
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level = logging.INFO
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self.useFixture(fixtures.LoggerFixture(nuke_handlers=False,
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format=log_format,
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level=level))
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rpc.add_extra_exmods("cinder.tests")
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self.addCleanup(rpc.clear_extra_exmods)
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self.addCleanup(rpc.cleanup)
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self.messaging_conf = messaging_conffixture.ConfFixture(CONF)
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self.messaging_conf.transport_driver = 'fake'
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self.messaging_conf.response_timeout = 15
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self.useFixture(self.messaging_conf)
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rpc.init(CONF)
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conf_fixture.set_defaults(CONF)
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CONF([], default_config_files=[])
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# NOTE(vish): We need a better method for creating fixtures for tests
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# now that we have some required db setup for the system
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# to work properly.
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self.start = timeutils.utcnow()
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CONF.set_default('connection', 'sqlite://', 'database')
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CONF.set_default('sqlite_synchronous', False, 'database')
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global _DB_CACHE
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if not _DB_CACHE:
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_DB_CACHE = Database(sqla_api, migration,
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sql_connection=CONF.database.connection,
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sqlite_db=CONF.database.sqlite_db,
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sqlite_clean_db=CONF.sqlite_clean_db)
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self.useFixture(_DB_CACHE)
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# emulate some of the mox stuff, we can't use the metaclass
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# because it screws with our generators
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self.mox = mox.Mox()
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self.stubs = stubout.StubOutForTesting()
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self.addCleanup(CONF.reset)
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self.addCleanup(self.mox.UnsetStubs)
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self.addCleanup(self.stubs.UnsetAll)
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self.addCleanup(self.stubs.SmartUnsetAll)
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self.addCleanup(self.mox.VerifyAll)
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self.addCleanup(self._common_cleanup)
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self.injected = []
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self._services = []
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fake_notifier.stub_notifier(self.stubs)
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CONF.set_override('fatal_exception_format_errors', True)
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# This will be cleaned up by the NestedTempfile fixture
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CONF.set_override('lock_path', tempfile.mkdtemp())
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CONF.set_override('policy_file',
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os.path.join(
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os.path.abspath(
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os.path.join(
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os.path.dirname(__file__),
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'..',
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)
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),
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'cinder/tests/policy.json'))
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def _common_cleanup(self):
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"""Runs after each test method to tear down test environment."""
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# Stop any timers
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for x in self.injected:
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try:
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x.stop()
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except AssertionError:
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pass
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# Kill any services
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for x in self._services:
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try:
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x.kill()
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except Exception:
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pass
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# Delete attributes that don't start with _ so they don't pin
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# memory around unnecessarily for the duration of the test
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# suite
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for key in [k for k in self.__dict__.keys() if k[0] != '_']:
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del self.__dict__[key]
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def flags(self, **kw):
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"""Override CONF variables for a test."""
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for k, v in kw.iteritems():
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CONF.set_override(k, v)
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def log_level(self, level):
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"""Set logging level to the specified value."""
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log_root = logging.getLogger(None).logger
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log_root.setLevel(level)
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def start_service(self, name, host=None, **kwargs):
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host = host and host or uuid.uuid4().hex
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kwargs.setdefault('host', host)
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kwargs.setdefault('binary', 'cinder-%s' % name)
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svc = service.Service.create(**kwargs)
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svc.start()
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self._services.append(svc)
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return svc
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def mock_object(self, obj, attr_name, new_attr=None, **kwargs):
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"""Use python mock to mock an object attribute
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Mocks the specified objects attribute with the given value.
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Automatically performs 'addCleanup' for the mock.
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"""
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if not new_attr:
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new_attr = mock.Mock()
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patcher = mock.patch.object(obj, attr_name, new_attr, **kwargs)
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patcher.start()
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self.addCleanup(patcher.stop)
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# Useful assertions
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def assertDictMatch(self, d1, d2, approx_equal=False, tolerance=0.001):
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"""Assert two dicts are equivalent.
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This is a 'deep' match in the sense that it handles nested
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dictionaries appropriately.
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NOTE:
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If you don't care (or don't know) a given value, you can specify
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the string DONTCARE as the value. This will cause that dict-item
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to be skipped.
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"""
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def raise_assertion(msg):
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d1str = d1
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d2str = d2
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base_msg = ('Dictionaries do not match. %(msg)s d1: %(d1str)s '
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'd2: %(d2str)s' %
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{'msg': msg, 'd1str': d1str, 'd2str': d2str})
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raise AssertionError(base_msg)
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d1keys = set(d1.keys())
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d2keys = set(d2.keys())
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if d1keys != d2keys:
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d1only = d1keys - d2keys
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d2only = d2keys - d1keys
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raise_assertion('Keys in d1 and not d2: %(d1only)s. '
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'Keys in d2 and not d1: %(d2only)s' %
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{'d1only': d1only, 'd2only': d2only})
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for key in d1keys:
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d1value = d1[key]
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d2value = d2[key]
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try:
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error = abs(float(d1value) - float(d2value))
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within_tolerance = error <= tolerance
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except (ValueError, TypeError):
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# If both values aren't convertible to float, just ignore
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# ValueError if arg is a str, TypeError if it's something else
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# (like None)
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within_tolerance = False
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if hasattr(d1value, 'keys') and hasattr(d2value, 'keys'):
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self.assertDictMatch(d1value, d2value)
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elif 'DONTCARE' in (d1value, d2value):
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continue
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elif approx_equal and within_tolerance:
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continue
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elif d1value != d2value:
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raise_assertion("d1['%(key)s']=%(d1value)s != "
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"d2['%(key)s']=%(d2value)s" %
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{
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'key': key,
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'd1value': d1value,
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'd2value': d2value,
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})
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def assertGreater(self, first, second, msg=None):
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"""Python < v2.7 compatibility. Assert 'first' > 'second'."""
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try:
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f = super(TestCase, self).assertGreater
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except AttributeError:
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self.assertThat(first,
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matchers.GreaterThan(second),
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message=msg or '')
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else:
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f(first, second, msg=msg)
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def assertGreaterEqual(self, first, second, msg=None):
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"""Python < v2.7 compatibility. Assert 'first' >= 'second'."""
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try:
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f = super(TestCase, self).assertGreaterEqual
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except AttributeError:
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self.assertThat(first,
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matchers.Not(matchers.LessThan(second)),
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message=msg or '')
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else:
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f(first, second, msg=msg)
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