1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
|
# -*- coding: utf-8 -*-
# Copyright 2015 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.storage._base 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)
class CacheDecoratorTestCase(unittest.TestCase):
@defer.inlineCallbacks
def test_passthrough(self):
@cached()
def func(self, key):
return key
self.assertEquals((yield func(self, "foo")), "foo")
self.assertEquals((yield func(self, "bar")), "bar")
@defer.inlineCallbacks
def test_hit(self):
callcount = [0]
@cached()
def func(self, key):
callcount[0] += 1
return key
yield func(self, "foo")
self.assertEquals(callcount[0], 1)
self.assertEquals((yield func(self, "foo")), "foo")
self.assertEquals(callcount[0], 1)
@defer.inlineCallbacks
def test_invalidate(self):
callcount = [0]
@cached()
def func(self, key):
callcount[0] += 1
return key
yield func(self, "foo")
self.assertEquals(callcount[0], 1)
func.invalidate("foo")
yield func(self, "foo")
self.assertEquals(callcount[0], 2)
def test_invalidate_missing(self):
@cached()
def func(self, key):
return key
func.invalidate("what")
@defer.inlineCallbacks
def test_max_entries(self):
callcount = [0]
@cached(max_entries=10)
def func(self, key):
callcount[0] += 1
return key
for k in range(0,12):
yield func(self, 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 func(self, k)
self.assertTrue(callcount[0] >= 14,
msg="Expected callcount >= 14, got %d" % (callcount[0]))
@defer.inlineCallbacks
def test_prefill(self):
callcount = [0]
@cached()
def func(self, key):
callcount[0] += 1
return key
func.prefill("foo", 123)
self.assertEquals((yield func(self, "foo")), 123)
self.assertEquals(callcount[0], 0)
|
