swift/test/unit/common/test_daemon.py

112 lines
3.4 KiB
Python

# Copyright (c) 2010-2012 OpenStack Foundation
#
# 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.
# TODO(clayg): Test kill_children signal handlers
import os
from six import StringIO
import unittest
from getpass import getuser
import logging
from test.unit import tmpfile
from mock import patch
from swift.common import daemon, utils
class MyDaemon(daemon.Daemon):
def __init__(self, conf):
self.conf = conf
self.logger = utils.get_logger(None, 'server', log_route='server')
MyDaemon.forever_called = False
MyDaemon.once_called = False
def run_forever(self):
MyDaemon.forever_called = True
def run_once(self):
MyDaemon.once_called = True
def run_raise(self):
raise OSError
def run_quit(self):
raise KeyboardInterrupt
class TestDaemon(unittest.TestCase):
def test_create(self):
d = daemon.Daemon({})
self.assertEquals(d.conf, {})
self.assertTrue(isinstance(d.logger, utils.LogAdapter))
def test_stubs(self):
d = daemon.Daemon({})
self.assertRaises(NotImplementedError, d.run_once)
self.assertRaises(NotImplementedError, d.run_forever)
class TestRunDaemon(unittest.TestCase):
def setUp(self):
utils.HASH_PATH_SUFFIX = 'endcap'
utils.HASH_PATH_PREFIX = 'startcap'
utils.drop_privileges = lambda *args: None
utils.capture_stdio = lambda *args: None
def tearDown(self):
reload(utils)
def test_run(self):
d = MyDaemon({})
self.assertFalse(MyDaemon.forever_called)
self.assertFalse(MyDaemon.once_called)
# test default
d.run()
self.assertEquals(d.forever_called, True)
# test once
d.run(once=True)
self.assertEquals(d.once_called, True)
def test_run_daemon(self):
sample_conf = "[my-daemon]\nuser = %s\n" % getuser()
with tmpfile(sample_conf) as conf_file:
with patch.dict('os.environ', {'TZ': ''}):
daemon.run_daemon(MyDaemon, conf_file)
self.assertEquals(MyDaemon.forever_called, True)
self.assertTrue(os.environ['TZ'] is not '')
daemon.run_daemon(MyDaemon, conf_file, once=True)
self.assertEquals(MyDaemon.once_called, True)
# test raise in daemon code
MyDaemon.run_once = MyDaemon.run_raise
self.assertRaises(OSError, daemon.run_daemon, MyDaemon,
conf_file, once=True)
# test user quit
MyDaemon.run_forever = MyDaemon.run_quit
sio = StringIO()
logger = logging.getLogger('server')
logger.addHandler(logging.StreamHandler(sio))
logger = utils.get_logger(None, 'server', log_route='server')
daemon.run_daemon(MyDaemon, conf_file, logger=logger)
self.assertTrue('user quit' in sio.getvalue().lower())
if __name__ == '__main__':
unittest.main()