neutron/neutron/tests/functional/agent/linux/test_utils.py

41 lines
1.5 KiB
Python

# Copyright 2015 Red Hat, Inc.
#
# 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 eventlet
import testtools
from neutron.agent.linux import async_process
from neutron.agent.linux import utils
from neutron.tests.functional.agent.linux import test_async_process
class TestPIDHelpers(test_async_process.AsyncProcessTestFramework):
def test_get_cmdline_from_pid_and_pid_invoked_with_cmdline(self):
cmd = ['tail', '-f', self.test_file_path]
proc = async_process.AsyncProcess(cmd)
proc.start(block=True)
self.addCleanup(proc.stop)
pid = proc.pid
self.assertEqual(cmd, utils.get_cmdline_from_pid(pid))
self.assertTrue(utils.pid_invoked_with_cmdline(pid, cmd))
self.assertEqual([], utils.get_cmdline_from_pid(-1))
def test_wait_until_true_predicate_succeeds(self):
utils.wait_until_true(lambda: True)
def test_wait_until_true_predicate_fails(self):
with testtools.ExpectedException(eventlet.timeout.Timeout):
utils.wait_until_true(lambda: False, 2)