134 lines
4.9 KiB
Python
134 lines
4.9 KiB
Python
# Copyright 2020-present MongoDB, Inc.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain 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,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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"""Test the pymongo ocsp_support module."""
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from collections import namedtuple
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from datetime import datetime, timedelta
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from os import urandom
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import random
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import sys
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from time import sleep
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sys.path[0:0] = [""]
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from pymongo.ocsp_cache import _OCSPCache
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from test import unittest
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class TestOcspCache(unittest.TestCase):
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@classmethod
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def setUpClass(cls):
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cls.MockHashAlgorithm = namedtuple(
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"MockHashAlgorithm", ['name'])
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cls.MockOcspRequest = namedtuple(
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"MockOcspRequest", ['hash_algorithm', 'issuer_name_hash',
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'issuer_key_hash', 'serial_number'])
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cls.MockOcspResponse = namedtuple(
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"MockOcspResponse", ["this_update", "next_update"])
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def setUp(self):
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self.cache = _OCSPCache()
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def _create_mock_request(self):
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hash_algorithm = self.MockHashAlgorithm(
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random.choice(['sha1', 'md5', 'sha256']))
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issuer_name_hash = urandom(8)
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issuer_key_hash = urandom(8)
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serial_number = random.randint(0, 10**10)
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return self.MockOcspRequest(
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hash_algorithm=hash_algorithm,
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issuer_name_hash=issuer_name_hash,
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issuer_key_hash=issuer_key_hash,
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serial_number=serial_number)
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def _create_mock_response(self, this_update_delta_seconds,
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next_update_delta_seconds):
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now = datetime.utcnow()
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this_update = now + timedelta(seconds=this_update_delta_seconds)
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if next_update_delta_seconds is not None:
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next_update = now + timedelta(seconds=next_update_delta_seconds)
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else:
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next_update = None
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return self.MockOcspResponse(
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this_update=this_update,
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next_update=next_update)
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def _add_mock_cache_entry(self, mock_request, mock_response):
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key = self.cache._get_cache_key(mock_request)
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self.cache._data[key] = mock_response
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def test_simple(self):
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# Start with 1 valid entry in the cache.
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request = self._create_mock_request()
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response = self._create_mock_response(-10, +3600)
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self._add_mock_cache_entry(request, response)
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# Ensure entry can be retrieved.
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self.assertEqual(self.cache[request], response)
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# Valid entries with an earlier next_update have no effect.
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response_1 = self._create_mock_response(-20, +1800)
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self.cache[request] = response_1
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self.assertEqual(self.cache[request], response)
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# Invalid entries with a later this_update have no effect.
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response_2 = self._create_mock_response(+20, +1800)
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self.cache[request] = response_2
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self.assertEqual(self.cache[request], response)
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# Invalid entries with passed next_update have no effect.
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response_3 = self._create_mock_response(-10, -5)
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self.cache[request] = response_3
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self.assertEqual(self.cache[request], response)
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# Valid entries with a later next_update update the cache.
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response_new = self._create_mock_response(-5, +7200)
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self.cache[request] = response_new
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self.assertEqual(self.cache[request], response_new)
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# Entries with an unset next_update purge the cache.
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response_notset = self._create_mock_response(-5, None)
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self.cache[request] = response_notset
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with self.assertRaises(KeyError):
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_ = self.cache[request]
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def test_invalidate(self):
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# Start with 1 valid entry in the cache.
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request = self._create_mock_request()
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response = self._create_mock_response(-10, +0.25)
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self._add_mock_cache_entry(request, response)
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# Ensure entry can be retrieved.
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self.assertEqual(self.cache[request], response)
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# Wait for entry to become invalid and ensure KeyError is raised.
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sleep(0.5)
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with self.assertRaises(KeyError):
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_ = self.cache[request]
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def test_non_existent(self):
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# Start with 1 valid entry in the cache.
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request = self._create_mock_request()
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response = self._create_mock_response(-10, +10)
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self._add_mock_cache_entry(request, response)
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# Attempt to retrieve non-existent entry must raise KeyError.
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with self.assertRaises(KeyError):
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_ = self.cache[self._create_mock_request()]
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if __name__ == "__main__":
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unittest.main()
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