# vim: tabstop=4 shiftwidth=4 softtabstop=4

# 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
"""

from openstack.common import log as logging
from openstack.common import threadgroup
from tests import utils

LOG = logging.getLogger(__name__)


class ThreadGroupTestCase(utils.BaseTestCase):
    """Test cases for thread group."""
    def setUp(self):
        super(ThreadGroupTestCase, self).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)