deb-manila/manila/tests/utils.py
Valeriy Ponomaryov 37c6e3179f Fix unstable DB migration tests
Unit test 'test_walk_versions' in
'manila.tests.db.migrations.alembic.test_migration' module
takes abnormally very long time sometimes.
In common cases it takes about 5-10 seconds in CI for Mitaka set of
DB migrations.
In CI runs when this test fails, 'postgres' variant takes
about 47 seconds and mysql reaches common test timeout of 60 seconds.

Note, that this test becomes slower with each
addition of new DB migration. Also, 'pymysql' works much slower
on slow nodes than 'psycopg2'.

So, add new test decorator that sets individual test timeout.
And make it be 5 minutes for mentioned test. In worst case of Mitaka
DB migrations set it can take about 2 minutes, but make it bigger
to have a margin for future releases.

Change-Id: I233f96f29fe62231c2e7013b74c06396dd923f27
Closes-Bug: #1501272
2016-03-10 22:03:16 +02:00

99 lines
3.0 KiB
Python

# Copyright 2011 OpenStack LLC
# Copyright 2015 Mirantic, 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 fixtures
import os
from oslo_config import cfg
import six
from manila import context
from manila import utils
CONF = cfg.CONF
def get_test_admin_context():
return context.get_admin_context()
def is_manila_installed():
if os.path.exists('../../manila.manila.egg-info'):
return True
else:
return False
def set_timeout(timeout):
"""Timeout decorator for unit test methods.
Use this decorator for tests that are expected to pass in very specific
amount of time, not common for all other tests.
It can have either big or small value.
"""
def _decorator(f):
@six.wraps(f)
def _wrapper(self, *args, **kwargs):
self.useFixture(fixtures.Timeout(timeout, gentle=True))
return f(self, *args, **kwargs)
return _wrapper
return _decorator
class create_temp_config_with_opts(object):
"""Creates temporary config file with provided opts and values.
usage:
data = {'FOO_GROUP': {'foo_opt': 'foo_value'}}
assert CONF.FOO_GROUP.foo_opt != 'foo_value'
with create_temp_config_with_opts(data):
assert CONF.FOO_GROUP.foo_opt == 'foo_value'
assert CONF.FOO_GROUP.foo_opt != 'foo_value'
:param data: dict -- expected dict with two layers, first is name of
config group and second is opts with values. Example:
{'DEFAULT': {'foo_opt': 'foo_v'}, 'BAR_GROUP': {'bar_opt': 'bar_v'}}
"""
def __init__(self, data):
self.data = data
def __enter__(self):
config_filename = 'fake_config'
with utils.tempdir() as tmpdir:
tmpfilename = os.path.join(tmpdir, '%s.conf' % config_filename)
with open(tmpfilename, "w") as configfile:
for group, opts in self.data.items():
configfile.write("""[%s]\n""" % group)
for opt, value in opts.items():
configfile.write(
"""%(k)s = %(v)s\n""" % {'k': opt, 'v': value})
configfile.write("""\n""")
# Add config file with updated opts
CONF.default_config_files = [configfile.name]
# Reload config instance to use redefined opts
CONF.reload_config_files()
return CONF
def __exit__(self, exc_type, exc_value, exc_traceback):
return False # do not suppress errors