vmware-nsx/neutron/tests/functional/agent/linux/test_async_process.py
lizheming 42683e1784 Fix bug:range() is not same in py3.x and py2.x
in python3.x, there is no method named xrange(),
it has replaced by range(),which is equal to xrange() in python2.x.
so we must fix this issue.we use six module to fix this issue.

Change-Id: I9cee3f0df2d8abbf6f66d7c5a3a0fed98df622e8
Closes-Bug: #1268439
2014-03-11 16:44:47 +08:00

72 lines
2.5 KiB
Python

# vim: tabstop=4 shiftwidth=4 softtabstop=4
# Copyright 2013 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 fixtures
from six.moves import xrange
from neutron.agent.linux import async_process
from neutron.tests import base
class TestAsyncProcess(base.BaseTestCase):
def setUp(self):
super(TestAsyncProcess, self).setUp()
self.test_file_path = self.useFixture(
fixtures.TempDir()).join("test_async_process.tmp")
self.data = [str(x) for x in xrange(4)]
with file(self.test_file_path, 'w') as f:
f.writelines('%s\n' % item for item in self.data)
def _check_stdout(self, proc):
# Ensure that all the output from the file is read
output = []
while output != self.data:
new_output = list(proc.iter_stdout())
if new_output:
output += new_output
eventlet.sleep(0.01)
def test_stopping_async_process_lifecycle(self):
with self.assert_max_execution_time():
proc = async_process.AsyncProcess(['tail', '-f',
self.test_file_path])
proc.start()
self._check_stdout(proc)
proc.stop()
# Ensure that the process and greenthreads have stopped
proc._process.wait()
self.assertEqual(proc._process.returncode, -9)
for watcher in proc._watchers:
watcher.wait()
def test_async_process_respawns(self):
with self.assert_max_execution_time():
proc = async_process.AsyncProcess(['tail', '-f',
self.test_file_path],
respawn_interval=0)
proc.start()
# Ensure that the same output is read twice
self._check_stdout(proc)
pid = proc._get_pid_to_kill()
proc._kill_process(pid)
self._check_stdout(proc)
proc.stop()