Add unit tests on cache handler
Change-Id: Ife6600da240f830aa0080e3f214cedf1389ea512
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# Copyright (c) 2020 OpenStack Foundation.
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# All Rights Reserved.
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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"""Test the cache handler module"""
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import os
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import fixtures
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from oslotest import base as test_base
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from oslo_policy import _cache_handler as _ch
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class CacheHandlerTest(test_base.BaseTestCase):
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def setUp(self):
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super().setUp()
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self.tmpdir = self.useFixture(fixtures.TempDir())
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def test_read_cached_file(self):
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file_cache = {}
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path = os.path.join(self.tmpdir.path, 'tmpfile')
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with open(path, 'w+') as fp:
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fp.write('test')
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reloaded, data = _ch.read_cached_file(file_cache, path)
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self.assertEqual('test', data)
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self.assertTrue(reloaded)
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reloaded, data = _ch.read_cached_file(file_cache, path)
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self.assertEqual('test', data)
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self.assertFalse(reloaded)
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reloaded, data = _ch.read_cached_file(
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file_cache, path, force_reload=True)
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self.assertEqual('test', data)
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self.assertTrue(reloaded)
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def test_read_cached_file_with_updates(self):
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file_cache = {}
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path = os.path.join(self.tmpdir.path, 'tmpfile')
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with open(path, 'w+') as fp:
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fp.write('test')
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reloaded, data = _ch.read_cached_file(file_cache, path)
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# update the timestamps
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times = (os.stat(path).st_atime + 1, os.stat(path).st_mtime + 1)
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os.utime(path, times)
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reloaded, data = _ch.read_cached_file(file_cache, path)
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self.assertTrue(reloaded)
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