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# Copyright (c) 2012 Rackspace Hosting
# 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.
"""
Unit Tests for thread groups
"""
import time
from eventlet import event
from oslotest import base as test_base
from oslo_service import threadgroup
class ThreadGroupTestCase(test_base.BaseTestCase):
"""Test cases for thread group."""
def setUp(self):
super().setUp()
self.tg = threadgroup.ThreadGroup()
self.addCleanup(self.tg.stop)
def test_add_dynamic_timer(self):
def foo(*args, **kwargs):
pass
initial_delay = 1
periodic_interval_max = 2
self.tg.add_dynamic_timer(foo, initial_delay, periodic_interval_max,
'arg', kwarg='kwarg')
self.assertEqual(1, len(self.tg.timers))
timer = self.tg.timers[0]
self.assertTrue(timer._running)
self.assertEqual(('arg',), timer.args)
self.assertEqual({'kwarg': 'kwarg'}, timer.kw)
def test_add_dynamic_timer_args(self):
def foo(*args, **kwargs):
pass
self.tg.add_dynamic_timer_args(foo, ['arg'], {'kwarg': 'kwarg'},
initial_delay=1,
periodic_interval_max=2,
stop_on_exception=False)
self.assertEqual(1, len(self.tg.timers))
timer = self.tg.timers[0]
self.assertTrue(timer._running)
self.assertEqual(('arg',), timer.args)
self.assertEqual({'kwarg': 'kwarg'}, timer.kw)
def test_add_timer(self):
def foo(*args, **kwargs):
pass
self.tg.add_timer(1, foo, 1,
'arg', kwarg='kwarg')
self.assertEqual(1, len(self.tg.timers))
timer = self.tg.timers[0]
self.assertTrue(timer._running)
self.assertEqual(('arg',), timer.args)
self.assertEqual({'kwarg': 'kwarg'}, timer.kw)
def test_add_timer_args(self):
def foo(*args, **kwargs):
pass
self.tg.add_timer_args(1, foo, ['arg'], {'kwarg': 'kwarg'},
initial_delay=1, stop_on_exception=False)
self.assertEqual(1, len(self.tg.timers))
timer = self.tg.timers[0]
self.assertTrue(timer._running)
self.assertEqual(('arg',), timer.args)
self.assertEqual({'kwarg': 'kwarg'}, timer.kw)
def test_stop_current_thread(self):
stop_event = event.Event()
quit_event = event.Event()
def stop_self(*args, **kwargs):
if args[0] == 1:
time.sleep(1)
self.tg.stop()
stop_event.send('stop_event')
quit_event.wait()
for i in range(0, 4):
self.tg.add_thread(stop_self, i, kwargs='kwargs')
stop_event.wait()
self.assertEqual(1, len(self.tg.threads))
quit_event.send('quit_event')
def test_stop_immediately(self):
def foo(*args, **kwargs):
time.sleep(1)
start_time = time.time()
self.tg.add_thread(foo, 'arg', kwarg='kwarg')
time.sleep(0)
self.tg.stop()
end_time = time.time()
self.assertEqual(0, len(self.tg.threads))
self.assertTrue(end_time - start_time < 1)
self.assertEqual(0, len(self.tg.timers))
def test_stop_gracefully(self):
def foo(*args, **kwargs):
time.sleep(1)
start_time = time.time()
self.tg.add_thread(foo, 'arg', kwarg='kwarg')
self.tg.stop(True)
end_time = time.time()
self.assertEqual(0, len(self.tg.threads))
self.assertTrue(end_time - start_time >= 1)
self.assertEqual(0, len(self.tg.timers))
def test_cancel_early(self):
def foo(*args, **kwargs):
time.sleep(1)
self.tg.add_thread(foo, 'arg', kwarg='kwarg')
self.tg.cancel()
self.assertEqual(0, len(self.tg.threads))
def test_cancel_late(self):
def foo(*args, **kwargs):
time.sleep(0.3)
self.tg.add_thread(foo, 'arg', kwarg='kwarg')
time.sleep(0)
self.tg.cancel()
self.assertEqual(1, len(self.tg.threads))
def test_cancel_timeout(self):
def foo(*args, **kwargs):
time.sleep(0.3)
self.tg.add_thread(foo, 'arg', kwarg='kwarg')
time.sleep(0)
self.tg.cancel(timeout=0.2, wait_time=0.1)
self.assertEqual(0, len(self.tg.threads))
def test_stop_timers(self):
def foo(*args, **kwargs):
pass
self.tg.add_timer('1234', foo)
self.assertEqual(1, len(self.tg.timers))
self.tg.stop_timers()
self.assertEqual(0, len(self.tg.timers))
def test_add_and_remove_timer(self):
def foo(*args, **kwargs):
pass
timer = self.tg.add_timer('1234', foo)
self.assertEqual(1, len(self.tg.timers))
timer.stop()
self.assertEqual(1, len(self.tg.timers))
self.tg.timer_done(timer)
self.assertEqual(0, len(self.tg.timers))
def test_add_and_remove_dynamic_timer(self):
def foo(*args, **kwargs):
pass
initial_delay = 1
periodic_interval_max = 2
timer = self.tg.add_dynamic_timer(foo, initial_delay,
periodic_interval_max)
self.assertEqual(1, len(self.tg.timers))
self.assertTrue(timer._running)
timer.stop()
self.assertEqual(1, len(self.tg.timers))
self.tg.timer_done(timer)
self.assertEqual(0, len(self.tg.timers))
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