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# Copyright 2015 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.
import datetime
from oslotest import base as test_base
from oslo_utils import fixture
from oslo_utils import timeutils
class TimeFixtureTest(test_base.BaseTestCase):
def test_set_time_override_using_default(self):
# When the fixture is used with its default constructor, the
# override_time is set to the current timestamp.
# Also, when the fixture is cleaned up, the override_time is reset.
self.assertIsNone(timeutils.utcnow.override_time)
with fixture.TimeFixture():
self.assertIsNotNone(timeutils.utcnow.override_time)
self.assertIsNone(timeutils.utcnow.override_time)
def test_set_time_override(self):
# When the fixture is used to set a time, utcnow returns that time.
new_time = datetime.datetime(2015, 1, 2, 3, 4, 6, 7)
self.useFixture(fixture.TimeFixture(new_time))
self.assertEqual(new_time, timeutils.utcnow())
# Call again to make sure it keeps returning the same time.
self.assertEqual(new_time, timeutils.utcnow())
def test_advance_time_delta(self):
# advance_time_delta() advances the overridden time by some timedelta.
new_time = datetime.datetime(2015, 1, 2, 3, 4, 6, 7)
time_fixture = self.useFixture(fixture.TimeFixture(new_time))
time_fixture.advance_time_delta(datetime.timedelta(seconds=1))
expected_time = datetime.datetime(2015, 1, 2, 3, 4, 7, 7)
self.assertEqual(expected_time, timeutils.utcnow())
def test_advance_time_seconds(self):
# advance_time_seconds() advances the overridden time by some number of
# seconds.
new_time = datetime.datetime(2015, 1, 2, 3, 4, 6, 7)
time_fixture = self.useFixture(fixture.TimeFixture(new_time))
time_fixture.advance_time_seconds(2)
expected_time = datetime.datetime(2015, 1, 2, 3, 4, 8, 7)
self.assertEqual(expected_time, timeutils.utcnow())
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