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# Copyright 2011 OpenStack LLC.
# 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.
"""
Tests For Chance Scheduler.
"""
from nova import test
from nova.scheduler import chance
class ChanceSchedulerTestCase(test.TestCase):
"""Test case for Chance Scheduler."""
def test_filter_hosts_avoid(self):
"""Test to make sure _filter_hosts() filters original hosts if
avoid_original_host is True."""
sched = chance.ChanceScheduler()
hosts = ['host1', 'host2', 'host3']
request_spec = dict(instance_properties=dict(host='host2'),
avoid_original_host=True)
filtered = sched._filter_hosts(request_spec, hosts)
self.assertEqual(filtered, ['host1', 'host3'])
def test_filter_hosts_no_avoid(self):
"""Test to make sure _filter_hosts() does not filter original
hosts if avoid_original_host is False."""
sched = chance.ChanceScheduler()
hosts = ['host1', 'host2', 'host3']
request_spec = dict(instance_properties=dict(host='host2'),
avoid_original_host=False)
filtered = sched._filter_hosts(request_spec, hosts)
self.assertEqual(filtered, hosts)
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