config/sysinv/sysinv/sysinv/sysinv/tests/base.py

228 lines
7.9 KiB
Python

# vim: tabstop=4 shiftwidth=4 softtabstop=4
# Copyright 2010 United States Government as represented by the
# Administrator of the National Aeronautics and Space Administration.
# 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.
"""Base classes for our unit tests.
Allows overriding of config for use of fakes, and some black magic for
inline callbacks.
"""
from sysinv.db import migration
from sysinv.common import paths
from sysinv.objects import base as objects_base
from sysinv.openstack.common.fixture import moxstubout
from sysinv.openstack.common import log as logging
from sysinv.openstack.common import timeutils
from sysinv.tests import conf_fixture
from sysinv.tests import policy_fixture
from sysinv.db import api as dbapi
from oslo_config import cfg
from oslo_db.sqlalchemy import enginefacade
import copy
import fixtures
import mock
import os
import shutil
import sys
import testtools
import eventlet
eventlet.monkey_patch(os=False)
CONF = cfg.CONF
_DB_CACHE = None
logging.setup('sysinv')
sys.modules['fm_core'] = mock.Mock()
class Database(fixtures.Fixture):
def __init__(self, engine, db_migrate, sql_connection,
sqlite_db, sqlite_clean_db):
self.sql_connection = sql_connection
self.sqlite_db = sqlite_db
self.sqlite_clean_db = sqlite_clean_db
self.engine = engine
self.engine.dispose()
conn = self.engine.connect()
if sql_connection == "sqlite://":
if db_migrate.db_version() > db_migrate.INIT_VERSION:
return
else:
testdb = paths.state_path_rel(sqlite_db)
if os.path.exists(testdb):
return
db_migrate.db_sync()
self.post_migrations()
if sql_connection == "sqlite://":
conn = self.engine.connect()
self._DB = "".join(line for line in conn.connection.iterdump())
self.engine.dispose()
else:
cleandb = paths.state_path_rel(sqlite_clean_db)
shutil.copyfile(testdb, cleandb)
def setUp(self):
super(Database, self).setUp()
if self.sql_connection == "sqlite://":
conn = self.engine.connect()
conn.connection.executescript(self._DB)
self.addCleanup(self.engine.dispose)
else:
shutil.copyfile(paths.state_path_rel(self.sqlite_clean_db),
paths.state_path_rel(self.sqlite_db))
def post_migrations(self):
"""Any addition steps that are needed outside of the migrations."""
class ReplaceModule(fixtures.Fixture):
"""Replace a module with a fake module."""
def __init__(self, name, new_value):
self.name = name
self.new_value = new_value
def _restore(self, old_value):
sys.modules[self.name] = old_value
def setUp(self):
super(ReplaceModule, self).setUp()
old_value = sys.modules.get(self.name)
sys.modules[self.name] = self.new_value
self.addCleanup(self._restore, old_value)
class TestingException(Exception):
pass
class TestCase(testtools.TestCase):
"""Test case base class for all unit tests."""
def setUp(self):
"""Run before each test method to initialize test environment."""
super(TestCase, self).setUp()
self.dbapi = dbapi.get_instance()
test_timeout = os.environ.get('OS_TEST_TIMEOUT', 0)
try:
test_timeout = int(test_timeout)
except ValueError:
# If timeout value is invalid do not set a timeout.
test_timeout = 0
if test_timeout > 0:
self.useFixture(fixtures.Timeout(test_timeout, gentle=True))
self.useFixture(fixtures.NestedTempfile())
self.useFixture(fixtures.TempHomeDir())
if (os.environ.get('OS_STDOUT_CAPTURE') == 'True' or
os.environ.get('OS_STDOUT_CAPTURE') == '1'):
stdout = self.useFixture(fixtures.StringStream('stdout')).stream
self.useFixture(fixtures.MonkeyPatch('sys.stdout', stdout))
if (os.environ.get('OS_STDERR_CAPTURE') == 'True' or
os.environ.get('OS_STDERR_CAPTURE') == '1'):
stderr = self.useFixture(fixtures.StringStream('stderr')).stream
self.useFixture(fixtures.MonkeyPatch('sys.stderr', stderr))
self.log_fixture = self.useFixture(fixtures.FakeLogger())
self.useFixture(conf_fixture.ConfFixture(CONF))
global _DB_CACHE
if not _DB_CACHE:
engine = enginefacade.get_legacy_facade().get_engine()
_DB_CACHE = Database(engine, migration,
sql_connection=CONF.database.connection,
sqlite_db='sysinv.sqlite',
sqlite_clean_db='clean.sqlite')
self.useFixture(_DB_CACHE)
# NOTE(danms): Make sure to reset us back to non-remote objects
# for each test to avoid interactions. Also, backup the object
# registry
objects_base.SysinvObject.indirection_api = None
self._base_test_obj_backup = copy.copy(
objects_base.SysinvObject._obj_classes)
self.addCleanup(self._restore_obj_registry)
mox_fixture = self.useFixture(moxstubout.MoxStubout())
self.mox = mox_fixture.mox
self.stubs = mox_fixture.stubs
self.addCleanup(self._clear_attrs)
self.useFixture(fixtures.EnvironmentVariable('http_proxy'))
self.policy = self.useFixture(policy_fixture.PolicyFixture())
CONF.set_override('fatal_exception_format_errors', True)
def _restore_obj_registry(self):
objects_base.SysinvObject._obj_classes = self._base_test_obj_backup
def _clear_attrs(self):
# Delete attributes that don't start with _ so they don't pin
# memory around unnecessarily for the duration of the test
# suite
for key in [k for k in self.__dict__.keys() if k[0] != '_']:
del self.__dict__[key]
def config(self, **kw):
"""Override config options for a test."""
group = kw.pop('group', None)
for k, v in kw.items():
CONF.set_override(k, v, group)
def path_get(self, project_file=None):
"""Get the absolute path to a file. Used for testing the API.
:param project_file: File whose path to return. Default: None.
:returns: path to the specified file, or path to project root.
"""
root = os.path.abspath(os.path.join(os.path.dirname(__file__),
'..',
'..',
)
)
if project_file:
return os.path.join(root, project_file)
else:
return root
def stub_out(self, old, new):
"""Replace a function for the duration of the test.
Use the monkey patch fixture to replace a function for the
duration of a test. Useful when you want to provide fake
methods instead of mocks during testing.
This should be used instead of self.stubs.Set (which is based
on mox) going forward.
"""
self.useFixture(fixtures.MonkeyPatch(old, new))
class TimeOverride(fixtures.Fixture):
"""Fixture to start and remove time override."""
def setUp(self):
super(TimeOverride, self).setUp()
timeutils.set_time_override()
self.addCleanup(timeutils.clear_time_override)