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# Copyright 2011 OpenStack Foundation
# 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 PickledScheduler.
"""
import datetime
import StringIO
from oslo.serialization import jsonutils
from nova.scheduler import scheduler_options
from nova import test
class FakeSchedulerOptions(scheduler_options.SchedulerOptions):
def __init__(self, last_checked, now, file_old, file_now, data, filedata):
super(FakeSchedulerOptions, self).__init__()
# Change internals ...
self.last_modified = file_old
self.last_checked = last_checked
self.data = data
# For overrides ...
self._time_now = now
self._file_now = file_now
self._file_data = filedata
self.file_was_loaded = False
def _get_file_timestamp(self, filename):
return self._file_now
def _get_file_handle(self, filename):
self.file_was_loaded = True
return StringIO.StringIO(self._file_data)
def _get_time_now(self):
return self._time_now
class SchedulerOptionsTestCase(test.NoDBTestCase):
def test_get_configuration_first_time_no_flag(self):
last_checked = None
now = datetime.datetime(2012, 1, 1, 1, 1, 1)
file_old = None
file_now = datetime.datetime(2012, 1, 1, 1, 1, 1)
data = dict(a=1, b=2, c=3)
jdata = jsonutils.dumps(data)
fake = FakeSchedulerOptions(last_checked, now, file_old, file_now,
{}, jdata)
self.assertEqual({}, fake.get_configuration())
self.assertFalse(fake.file_was_loaded)
def test_get_configuration_first_time_empty_file(self):
last_checked = None
now = datetime.datetime(2012, 1, 1, 1, 1, 1)
file_old = None
file_now = datetime.datetime(2012, 1, 1, 1, 1, 1)
jdata = ""
fake = FakeSchedulerOptions(last_checked, now, file_old, file_now,
{}, jdata)
self.assertEqual({}, fake.get_configuration('foo.json'))
self.assertTrue(fake.file_was_loaded)
def test_get_configuration_first_time_happy_day(self):
last_checked = None
now = datetime.datetime(2012, 1, 1, 1, 1, 1)
file_old = None
file_now = datetime.datetime(2012, 1, 1, 1, 1, 1)
data = dict(a=1, b=2, c=3)
jdata = jsonutils.dumps(data)
fake = FakeSchedulerOptions(last_checked, now, file_old, file_now,
{}, jdata)
self.assertEqual(data, fake.get_configuration('foo.json'))
self.assertTrue(fake.file_was_loaded)
def test_get_configuration_second_time_no_change(self):
last_checked = datetime.datetime(2011, 1, 1, 1, 1, 1)
now = datetime.datetime(2012, 1, 1, 1, 1, 1)
file_old = datetime.datetime(2012, 1, 1, 1, 1, 1)
file_now = datetime.datetime(2012, 1, 1, 1, 1, 1)
data = dict(a=1, b=2, c=3)
jdata = jsonutils.dumps(data)
fake = FakeSchedulerOptions(last_checked, now, file_old, file_now,
data, jdata)
self.assertEqual(data, fake.get_configuration('foo.json'))
self.assertFalse(fake.file_was_loaded)
def test_get_configuration_second_time_too_fast(self):
last_checked = datetime.datetime(2011, 1, 1, 1, 1, 1)
now = datetime.datetime(2011, 1, 1, 1, 1, 2)
file_old = datetime.datetime(2012, 1, 1, 1, 1, 1)
file_now = datetime.datetime(2013, 1, 1, 1, 1, 1)
old_data = dict(a=1, b=2, c=3)
data = dict(a=11, b=12, c=13)
jdata = jsonutils.dumps(data)
fake = FakeSchedulerOptions(last_checked, now, file_old, file_now,
old_data, jdata)
self.assertEqual(old_data, fake.get_configuration('foo.json'))
self.assertFalse(fake.file_was_loaded)
def test_get_configuration_second_time_change(self):
last_checked = datetime.datetime(2011, 1, 1, 1, 1, 1)
now = datetime.datetime(2012, 1, 1, 1, 1, 1)
file_old = datetime.datetime(2012, 1, 1, 1, 1, 1)
file_now = datetime.datetime(2013, 1, 1, 1, 1, 1)
old_data = dict(a=1, b=2, c=3)
data = dict(a=11, b=12, c=13)
jdata = jsonutils.dumps(data)
fake = FakeSchedulerOptions(last_checked, now, file_old, file_now,
old_data, jdata)
self.assertEqual(data, fake.get_configuration('foo.json'))
self.assertTrue(fake.file_was_loaded)
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