200 lines
4.6 KiB
Python
200 lines
4.6 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 tests import unittest
|
|
from twisted.internet import defer
|
|
|
|
from synapse.util.async import ObservableDeferred
|
|
|
|
from synapse.util.caches.descriptors import Cache, cached
|
|
|
|
|
|
class CacheTestCase(unittest.TestCase):
|
|
|
|
def setUp(self):
|
|
self.cache = Cache("test")
|
|
|
|
def test_empty(self):
|
|
failed = False
|
|
try:
|
|
self.cache.get("foo")
|
|
except KeyError:
|
|
failed = True
|
|
|
|
self.assertTrue(failed)
|
|
|
|
def test_hit(self):
|
|
self.cache.prefill("foo", 123)
|
|
|
|
self.assertEquals(self.cache.get("foo"), 123)
|
|
|
|
def test_invalidate(self):
|
|
self.cache.prefill(("foo",), 123)
|
|
self.cache.invalidate(("foo",))
|
|
|
|
failed = False
|
|
try:
|
|
self.cache.get(("foo",))
|
|
except KeyError:
|
|
failed = True
|
|
|
|
self.assertTrue(failed)
|
|
|
|
def test_eviction(self):
|
|
cache = Cache("test", max_entries=2)
|
|
|
|
cache.prefill(1, "one")
|
|
cache.prefill(2, "two")
|
|
cache.prefill(3, "three") # 1 will be evicted
|
|
|
|
failed = False
|
|
try:
|
|
cache.get(1)
|
|
except KeyError:
|
|
failed = True
|
|
|
|
self.assertTrue(failed)
|
|
|
|
cache.get(2)
|
|
cache.get(3)
|
|
|
|
def test_eviction_lru(self):
|
|
cache = Cache("test", max_entries=2, lru=True)
|
|
|
|
cache.prefill(1, "one")
|
|
cache.prefill(2, "two")
|
|
|
|
# Now access 1 again, thus causing 2 to be least-recently used
|
|
cache.get(1)
|
|
|
|
cache.prefill(3, "three")
|
|
|
|
failed = False
|
|
try:
|
|
cache.get(2)
|
|
except KeyError:
|
|
failed = True
|
|
|
|
self.assertTrue(failed)
|
|
|
|
cache.get(1)
|
|
cache.get(3)
|
|
|
|
|
|
class CacheDecoratorTestCase(unittest.TestCase):
|
|
|
|
@defer.inlineCallbacks
|
|
def test_passthrough(self):
|
|
class A(object):
|
|
@cached()
|
|
def func(self, key):
|
|
return key
|
|
|
|
a = A()
|
|
|
|
self.assertEquals((yield a.func("foo")), "foo")
|
|
self.assertEquals((yield a.func("bar")), "bar")
|
|
|
|
@defer.inlineCallbacks
|
|
def test_hit(self):
|
|
callcount = [0]
|
|
|
|
class A(object):
|
|
@cached()
|
|
def func(self, key):
|
|
callcount[0] += 1
|
|
return key
|
|
|
|
a = A()
|
|
yield a.func("foo")
|
|
|
|
self.assertEquals(callcount[0], 1)
|
|
|
|
self.assertEquals((yield a.func("foo")), "foo")
|
|
self.assertEquals(callcount[0], 1)
|
|
|
|
@defer.inlineCallbacks
|
|
def test_invalidate(self):
|
|
callcount = [0]
|
|
|
|
class A(object):
|
|
@cached()
|
|
def func(self, key):
|
|
callcount[0] += 1
|
|
return key
|
|
|
|
a = A()
|
|
yield a.func("foo")
|
|
|
|
self.assertEquals(callcount[0], 1)
|
|
|
|
a.func.invalidate(("foo",))
|
|
|
|
yield a.func("foo")
|
|
|
|
self.assertEquals(callcount[0], 2)
|
|
|
|
def test_invalidate_missing(self):
|
|
class A(object):
|
|
@cached()
|
|
def func(self, key):
|
|
return key
|
|
|
|
A().func.invalidate(("what",))
|
|
|
|
@defer.inlineCallbacks
|
|
def test_max_entries(self):
|
|
callcount = [0]
|
|
|
|
class A(object):
|
|
@cached(max_entries=10)
|
|
def func(self, key):
|
|
callcount[0] += 1
|
|
return key
|
|
|
|
a = A()
|
|
|
|
for k in range(0, 12):
|
|
yield a.func(k)
|
|
|
|
self.assertEquals(callcount[0], 12)
|
|
|
|
# There must have been at least 2 evictions, meaning if we calculate
|
|
# all 12 values again, we must get called at least 2 more times
|
|
for k in range(0,12):
|
|
yield a.func(k)
|
|
|
|
self.assertTrue(callcount[0] >= 14,
|
|
msg="Expected callcount >= 14, got %d" % (callcount[0]))
|
|
|
|
def test_prefill(self):
|
|
callcount = [0]
|
|
|
|
d = defer.succeed(123)
|
|
|
|
class A(object):
|
|
@cached()
|
|
def func(self, key):
|
|
callcount[0] += 1
|
|
return d
|
|
|
|
a = A()
|
|
|
|
a.func.prefill(("foo",), ObservableDeferred(d))
|
|
|
|
self.assertEquals(a.func("foo").result, d.result)
|
|
self.assertEquals(callcount[0], 0)
|