64 lines
2.4 KiB
Python
64 lines
2.4 KiB
Python
# -*- coding: utf-8 -*-
|
|
# Copyright 2015, 2016 OpenMarket Ltd
|
|
#
|
|
# 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.
|
|
|
|
|
|
from .. import unittest
|
|
|
|
from synapse.util.caches.snapshot_cache import SnapshotCache
|
|
from twisted.internet.defer import Deferred
|
|
|
|
|
|
class SnapshotCacheTestCase(unittest.TestCase):
|
|
|
|
def setUp(self):
|
|
self.cache = SnapshotCache()
|
|
self.cache.DURATION_MS = 1
|
|
|
|
def test_get_set(self):
|
|
# Check that getting a missing key returns None
|
|
self.assertEquals(self.cache.get(0, "key"), None)
|
|
|
|
# Check that setting a key with a deferred returns
|
|
# a deferred that resolves when the initial deferred does
|
|
d = Deferred()
|
|
set_result = self.cache.set(0, "key", d)
|
|
self.assertIsNotNone(set_result)
|
|
self.assertFalse(set_result.called)
|
|
|
|
# Check that getting the key before the deferred has resolved
|
|
# returns a deferred that resolves when the initial deferred does.
|
|
get_result_at_10 = self.cache.get(10, "key")
|
|
self.assertIsNotNone(get_result_at_10)
|
|
self.assertFalse(get_result_at_10.called)
|
|
|
|
# Check that the returned deferreds resolve when the initial deferred
|
|
# does.
|
|
d.callback("v")
|
|
self.assertTrue(set_result.called)
|
|
self.assertTrue(get_result_at_10.called)
|
|
|
|
# Check that getting the key after the deferred has resolved
|
|
# before the cache expires returns a resolved deferred.
|
|
get_result_at_11 = self.cache.get(11, "key")
|
|
self.assertIsNotNone(get_result_at_11)
|
|
if isinstance(get_result_at_11, Deferred):
|
|
# The cache may return the actual result rather than a deferred
|
|
self.assertTrue(get_result_at_11.called)
|
|
|
|
# Check that getting the key after the deferred has resolved
|
|
# after the cache expires returns None
|
|
get_result_at_12 = self.cache.get(12, "key")
|
|
self.assertIsNone(get_result_at_12)
|