/usr/lib/python2.7/dist-packages/celery/tests/utils/test_functional.py is in python-celery 3.1.20-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 | from __future__ import absolute_import
import pickle
import sys
from kombu.utils.functional import lazy
from celery.five import THREAD_TIMEOUT_MAX, items, range, nextfun
from celery.utils.functional import (
LRUCache,
firstmethod,
first,
mlazy,
padlist,
maybe_list,
)
from celery.tests.case import Case, SkipTest
class test_LRUCache(Case):
def test_expires(self):
limit = 100
x = LRUCache(limit=limit)
slots = list(range(limit * 2))
for i in slots:
x[i] = i
self.assertListEqual(list(x.keys()), list(slots[limit:]))
self.assertTrue(x.items())
self.assertTrue(x.values())
def test_is_pickleable(self):
x = LRUCache(limit=10)
x.update(luke=1, leia=2)
y = pickle.loads(pickle.dumps(x))
self.assertEqual(y.limit, y.limit)
self.assertEqual(y, x)
def test_update_expires(self):
limit = 100
x = LRUCache(limit=limit)
slots = list(range(limit * 2))
for i in slots:
x.update({i: i})
self.assertListEqual(list(x.keys()), list(slots[limit:]))
def test_least_recently_used(self):
x = LRUCache(3)
x[1], x[2], x[3] = 1, 2, 3
self.assertEqual(list(x.keys()), [1, 2, 3])
x[4], x[5] = 4, 5
self.assertEqual(list(x.keys()), [3, 4, 5])
# access 3, which makes it the last used key.
x[3]
x[6] = 6
self.assertEqual(list(x.keys()), [5, 3, 6])
x[7] = 7
self.assertEqual(list(x.keys()), [3, 6, 7])
def test_update_larger_than_cache_size(self):
x = LRUCache(2)
x.update(dict((x, x) for x in range(100)))
self.assertEqual(list(x.keys()), [98, 99])
def assertSafeIter(self, method, interval=0.01, size=10000):
if sys.version_info >= (3,5):
raise SkipTest('Fails on Py3.5')
from threading import Thread, Event
from time import sleep
x = LRUCache(size)
x.update(zip(range(size), range(size)))
class Burglar(Thread):
def __init__(self, cache):
self.cache = cache
self.__is_shutdown = Event()
self.__is_stopped = Event()
Thread.__init__(self)
def run(self):
while not self.__is_shutdown.isSet():
try:
self.cache.popitem(last=False)
except KeyError:
break
self.__is_stopped.set()
def stop(self):
self.__is_shutdown.set()
self.__is_stopped.wait()
self.join(THREAD_TIMEOUT_MAX)
burglar = Burglar(x)
burglar.start()
try:
for _ in getattr(x, method)():
sleep(0.0001)
finally:
burglar.stop()
def test_safe_to_remove_while_iteritems(self):
self.assertSafeIter('iteritems')
def test_safe_to_remove_while_keys(self):
self.assertSafeIter('keys')
def test_safe_to_remove_while_itervalues(self):
self.assertSafeIter('itervalues')
def test_items(self):
c = LRUCache()
c.update(a=1, b=2, c=3)
self.assertTrue(list(items(c)))
class test_utils(Case):
def test_padlist(self):
self.assertListEqual(
padlist(['George', 'Costanza', 'NYC'], 3),
['George', 'Costanza', 'NYC'],
)
self.assertListEqual(
padlist(['George', 'Costanza'], 3),
['George', 'Costanza', None],
)
self.assertListEqual(
padlist(['George', 'Costanza', 'NYC'], 4, default='Earth'),
['George', 'Costanza', 'NYC', 'Earth'],
)
def test_firstmethod_AttributeError(self):
self.assertIsNone(firstmethod('foo')([object()]))
def test_firstmethod_handles_lazy(self):
class A(object):
def __init__(self, value=None):
self.value = value
def m(self):
return self.value
self.assertEqual('four', firstmethod('m')([
A(), A(), A(), A('four'), A('five')]))
self.assertEqual('four', firstmethod('m')([
A(), A(), A(), lazy(lambda: A('four')), A('five')]))
def test_first(self):
iterations = [0]
def predicate(value):
iterations[0] += 1
if value == 5:
return True
return False
self.assertEqual(5, first(predicate, range(10)))
self.assertEqual(iterations[0], 6)
iterations[0] = 0
self.assertIsNone(first(predicate, range(10, 20)))
self.assertEqual(iterations[0], 10)
def test_maybe_list(self):
self.assertEqual(maybe_list(1), [1])
self.assertEqual(maybe_list([1]), [1])
self.assertIsNone(maybe_list(None))
class test_mlazy(Case):
def test_is_memoized(self):
it = iter(range(20, 30))
p = mlazy(nextfun(it))
self.assertEqual(p(), 20)
self.assertTrue(p.evaluated)
self.assertEqual(p(), 20)
self.assertEqual(repr(p), '20')
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