vmware-nsx/neutron/tests/unit/test_linux_daemon.py
Gary Kotton 26707bdbe7 Remove @author(s) from copyright statements
We have git to track authorship, so let's not pad source files
with it as well.

A hacking check has been added for this. The value is N322.

Change-Id: Iab0b64d417e0bb41a6b455e2ac377deee64ec3ee
2014-09-15 21:40:09 +09:00

210 lines
7.4 KiB
Python

#
# Copyright 2012 New Dream Network, LLC (DreamHost)
#
# 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 os
import sys
import mock
import testtools
from neutron.agent.linux import daemon
from neutron.tests import base
FAKE_FD = 8
class TestPidfile(base.BaseTestCase):
def setUp(self):
super(TestPidfile, self).setUp()
self.os_p = mock.patch.object(daemon, 'os')
self.os = self.os_p.start()
self.os.open.return_value = FAKE_FD
self.fcntl_p = mock.patch.object(daemon, 'fcntl')
self.fcntl = self.fcntl_p.start()
self.fcntl.flock.return_value = 0
def test_init(self):
self.os.O_CREAT = os.O_CREAT
self.os.O_RDWR = os.O_RDWR
daemon.Pidfile('thefile', 'python')
self.os.open.assert_called_once_with('thefile', os.O_CREAT | os.O_RDWR)
self.fcntl.flock.assert_called_once_with(FAKE_FD, self.fcntl.LOCK_EX |
self.fcntl.LOCK_NB)
def test_init_open_fail(self):
self.os.open.side_effect = IOError
with mock.patch.object(daemon.sys, 'stderr'):
with testtools.ExpectedException(SystemExit):
daemon.Pidfile('thefile', 'python')
sys.assert_has_calls([
mock.call.stderr.write(mock.ANY),
mock.call.exit(1)]
)
def test_unlock(self):
p = daemon.Pidfile('thefile', 'python')
p.unlock()
self.fcntl.flock.assert_has_calls([
mock.call(FAKE_FD, self.fcntl.LOCK_EX | self.fcntl.LOCK_NB),
mock.call(FAKE_FD, self.fcntl.LOCK_UN)]
)
def test_write(self):
p = daemon.Pidfile('thefile', 'python')
p.write(34)
self.os.assert_has_calls([
mock.call.ftruncate(FAKE_FD, 0),
mock.call.write(FAKE_FD, '34'),
mock.call.fsync(FAKE_FD)]
)
def test_read(self):
self.os.read.return_value = '34'
p = daemon.Pidfile('thefile', 'python')
self.assertEqual(34, p.read())
def test_is_running(self):
with mock.patch('__builtin__.open') as mock_open:
p = daemon.Pidfile('thefile', 'python')
mock_open.return_value.__enter__ = lambda s: s
mock_open.return_value.__exit__ = mock.Mock()
mock_open.return_value.readline.return_value = 'python'
with mock.patch.object(p, 'read') as read:
read.return_value = 34
self.assertTrue(p.is_running())
mock_open.assert_called_once_with('/proc/34/cmdline', 'r')
def test_is_running_uuid_true(self):
with mock.patch('__builtin__.open') as mock_open:
p = daemon.Pidfile('thefile', 'python', uuid='1234')
mock_open.return_value.__enter__ = lambda s: s
mock_open.return_value.__exit__ = mock.Mock()
mock_open.return_value.readline.return_value = 'python 1234'
with mock.patch.object(p, 'read') as read:
read.return_value = 34
self.assertTrue(p.is_running())
mock_open.assert_called_once_with('/proc/34/cmdline', 'r')
def test_is_running_uuid_false(self):
with mock.patch('__builtin__.open') as mock_open:
p = daemon.Pidfile('thefile', 'python', uuid='6789')
mock_open.return_value.__enter__ = lambda s: s
mock_open.return_value.__exit__ = mock.Mock()
mock_open.return_value.readline.return_value = 'python 1234'
with mock.patch.object(p, 'read') as read:
read.return_value = 34
self.assertFalse(p.is_running())
mock_open.assert_called_once_with('/proc/34/cmdline', 'r')
class TestDaemon(base.BaseTestCase):
def setUp(self):
super(TestDaemon, self).setUp()
self.os_p = mock.patch.object(daemon, 'os')
self.os = self.os_p.start()
self.pidfile_p = mock.patch.object(daemon, 'Pidfile')
self.pidfile = self.pidfile_p.start()
def test_init(self):
d = daemon.Daemon('pidfile')
self.assertEqual(d.procname, 'python')
def test_fork_parent(self):
self.os.fork.return_value = 1
with testtools.ExpectedException(SystemExit):
d = daemon.Daemon('pidfile')
d._fork()
def test_fork_child(self):
self.os.fork.return_value = 0
d = daemon.Daemon('pidfile')
self.assertIsNone(d._fork())
def test_fork_error(self):
self.os.fork.side_effect = lambda: OSError(1)
with mock.patch.object(daemon.sys, 'stderr'):
with testtools.ExpectedException(SystemExit):
d = daemon.Daemon('pidfile', 'stdin')
d._fork()
def test_daemonize(self):
d = daemon.Daemon('pidfile')
with mock.patch.object(d, '_fork') as fork:
with mock.patch.object(daemon, 'atexit') as atexit:
with mock.patch.object(daemon, 'signal') as signal:
signal.SIGTERM = 15
with mock.patch.object(daemon, 'sys') as sys:
sys.stdin.fileno.return_value = 0
sys.stdout.fileno.return_value = 1
sys.stderr.fileno.return_value = 2
d.daemonize()
signal.signal.assert_called_once_with(15, d.handle_sigterm)
atexit.register.assert_called_once_with(d.delete_pid)
fork.assert_has_calls([mock.call(), mock.call()])
self.os.assert_has_calls([
mock.call.chdir('/'),
mock.call.setsid(),
mock.call.umask(0),
mock.call.dup2(mock.ANY, 0),
mock.call.dup2(mock.ANY, 1),
mock.call.dup2(mock.ANY, 2),
mock.call.getpid()]
)
def test_delete_pid(self):
self.pidfile.return_value.__str__.return_value = 'pidfile'
d = daemon.Daemon('pidfile')
d.delete_pid()
self.os.remove.assert_called_once_with('pidfile')
def test_handle_sigterm(self):
d = daemon.Daemon('pidfile')
with mock.patch.object(daemon, 'sys') as sys:
d.handle_sigterm(15, 1234)
sys.exit.assert_called_once_with(0)
def test_start(self):
self.pidfile.return_value.is_running.return_value = False
d = daemon.Daemon('pidfile')
with mock.patch.object(d, 'daemonize') as daemonize:
with mock.patch.object(d, 'run') as run:
d.start()
run.assert_called_once_with()
daemonize.assert_called_once_with()
def test_start_running(self):
self.pidfile.return_value.is_running.return_value = True
d = daemon.Daemon('pidfile')
with mock.patch.object(daemon.sys, 'stderr'):
with mock.patch.object(d, 'daemonize') as daemonize:
with testtools.ExpectedException(SystemExit):
d.start()
self.assertFalse(daemonize.called)