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# coding: utf-8
import threading
import unittest
import time
import datetime
from beaker._compat import u_
from beaker.cache import Cache
from beaker.middleware import SessionMiddleware, CacheMiddleware
from webtest import TestApp as WebTestApp
class CacheManagerBaseTests(unittest.TestCase):
SUPPORTS_EXPIRATION = True
SUPPORTS_TIMEOUT = True
CACHE_ARGS = {}
@classmethod
def setUpClass(cls):
def simple_session_app(environ, start_response):
session = environ['beaker.session']
sess_id = environ.get('SESSION_ID')
if environ['PATH_INFO'].startswith('/invalid'):
# Attempt to access the session
id = session.id
session['value'] = 2
else:
if sess_id:
session = session.get_by_id(sess_id)
if not session:
start_response('200 OK', [('Content-type', 'text/plain')])
return [("No session id of %s found." % sess_id).encode('utf-8')]
if not session.has_key('value'):
session['value'] = 0
session['value'] += 1
if not environ['PATH_INFO'].startswith('/nosave'):
session.save()
start_response('200 OK', [('Content-type', 'text/plain')])
return [('The current value is: %d, session id is %s' % (session['value'],
session.id)).encode('utf-8')]
def simple_app(environ, start_response):
extra_args = cls.CACHE_ARGS
clear = False
if environ.get('beaker.clear'):
clear = True
cache = environ['beaker.cache'].get_cache('testcache', **extra_args)
if clear:
cache.clear()
try:
value = cache.get_value('value')
except:
value = 0
cache.set_value('value', value + 1)
start_response('200 OK', [('Content-type', 'text/plain')])
return [('The current value is: %s' % cache.get_value('value')).encode('utf-8')]
def using_none_app(environ, start_response):
extra_args = cls.CACHE_ARGS
clear = False
if environ.get('beaker.clear'):
clear = True
cache = environ['beaker.cache'].get_cache('testcache', **extra_args)
if clear:
cache.clear()
try:
value = cache.get_value('value')
except:
value = 10
cache.set_value('value', None)
start_response('200 OK', [('Content-type', 'text/plain')])
return [('The current value is: %s' % value).encode('utf-8')]
def cache_manager_app(environ, start_response):
cm = environ['beaker.cache']
cm.get_cache('test')['test_key'] = 'test value'
start_response('200 OK', [('Content-type', 'text/plain')])
yield ("test_key is: %s\n" % cm.get_cache('test')['test_key']).encode('utf-8')
cm.get_cache('test').clear()
try:
test_value = cm.get_cache('test')['test_key']
except KeyError:
yield "test_key cleared".encode('utf-8')
else:
yield (
"test_key wasn't cleared, is: %s\n" % cm.get_cache('test')['test_key']
).encode('utf-8')
cls.simple_session_app = staticmethod(simple_session_app)
cls.simple_app = staticmethod(simple_app)
cls.using_none_app = staticmethod(using_none_app)
cls.cache_manager_app = staticmethod(cache_manager_app)
def setUp(self):
Cache('test', **self.CACHE_ARGS).clear()
def test_session(self):
app = WebTestApp(SessionMiddleware(self.simple_session_app, **self.CACHE_ARGS))
res = app.get('/')
assert 'current value is: 1' in res
res = app.get('/')
assert 'current value is: 2' in res
res = app.get('/')
assert 'current value is: 3' in res
def test_session_invalid(self):
app = WebTestApp(SessionMiddleware(self.simple_session_app, **self.CACHE_ARGS))
res = app.get('/invalid', headers=dict(
Cookie='beaker.session.id=df7324911e246b70b5781c3c58328442; Path=/'))
assert 'current value is: 2' in res
def test_session_timeout(self):
app = WebTestApp(SessionMiddleware(self.simple_session_app, timeout=1, **self.CACHE_ARGS))
session = app.app._get_session()
session.save()
if self.SUPPORTS_TIMEOUT:
assert session.namespace.timeout == 121
res = app.get('/')
assert 'current value is: 1' in res
res = app.get('/')
assert 'current value is: 2' in res
res = app.get('/')
assert 'current value is: 3' in res
def test_has_key(self):
cache = Cache('test', **self.CACHE_ARGS)
o = object()
cache.set_value("test", o)
assert cache.has_key("test")
assert "test" in cache
assert not cache.has_key("foo")
assert "foo" not in cache
cache.remove_value("test")
assert not cache.has_key("test")
def test_clear(self):
cache = Cache('test', **self.CACHE_ARGS)
cache.set_value('test', 20)
cache.set_value('fred', 10)
assert cache.has_key('test')
assert 'test' in cache
assert cache.has_key('fred')
cache.clear()
assert not cache.has_key("test")
def test_has_key_multicache(self):
cache = Cache('test', **self.CACHE_ARGS)
o = object()
cache.set_value("test", o)
assert cache.has_key("test")
assert "test" in cache
cache = Cache('test', **self.CACHE_ARGS)
assert cache.has_key("test")
def test_unicode_keys(self):
cache = Cache('test', **self.CACHE_ARGS)
o = object()
cache.set_value(u_('hiŏ'), o)
assert u_('hiŏ') in cache
assert u_('hŏa') not in cache
cache.remove_value(u_('hiŏ'))
assert u_('hiŏ') not in cache
def test_long_unicode_keys(self):
cache = Cache('test', **self.CACHE_ARGS)
o = object()
long_str = u_(
'Очень длинная строка, которая не влезает в сто двадцать восемь байт и поэтому не проходит ограничение в check_key, что очень прискорбно, не правда ли, друзья? Давайте же скорее исправим это досадное недоразумение!'
)
cache.set_value(long_str, o)
assert long_str in cache
cache.remove_value(long_str)
assert long_str not in cache
def test_spaces_in_unicode_keys(self):
cache = Cache('test', **self.CACHE_ARGS)
o = object()
cache.set_value(u_('hi ŏ'), o)
assert u_('hi ŏ') in cache
assert u_('hŏa') not in cache
cache.remove_value(u_('hi ŏ'))
assert u_('hi ŏ') not in cache
def test_spaces_in_keys(self):
cache = Cache('test', **self.CACHE_ARGS)
cache.set_value("has space", 24)
assert cache.has_key("has space")
assert 24 == cache.get_value("has space")
cache.set_value("hasspace", 42)
assert cache.has_key("hasspace")
assert 42 == cache.get_value("hasspace")
def test_increment(self):
app = WebTestApp(CacheMiddleware(self.simple_app))
res = app.get('/', extra_environ={'beaker.clear': True})
assert 'current value is: 1' in res
res = app.get('/')
assert 'current value is: 2' in res
res = app.get('/')
assert 'current value is: 3' in res
app = WebTestApp(CacheMiddleware(self.simple_app))
res = app.get('/', extra_environ={'beaker.clear': True})
assert 'current value is: 1' in res
res = app.get('/')
assert 'current value is: 2' in res
res = app.get('/')
assert 'current value is: 3' in res
def test_cache_manager(self):
app = WebTestApp(CacheMiddleware(self.cache_manager_app))
res = app.get('/')
assert 'test_key is: test value' in res
assert 'test_key cleared' in res
def test_store_none(self):
app = WebTestApp(CacheMiddleware(self.using_none_app))
res = app.get('/', extra_environ={'beaker.clear': True})
assert 'current value is: 10' in res
res = app.get('/')
assert 'current value is: None' in res
def test_expiretime(self):
cache = Cache('test', **self.CACHE_ARGS)
cache.set_value("has space", 24, expiretime=1)
assert cache.has_key("has space")
time.sleep(1.1)
assert not cache.has_key("has space")
def test_expiretime_automatic(self):
if not self.SUPPORTS_EXPIRATION:
self.skipTest('NamespaceManager does not support automatic expiration')
cache = Cache('test', **self.CACHE_ARGS)
cache.set_value("has space", 24, expiretime=1)
assert cache.namespace.has_key("has space")
time.sleep(1.1)
assert not cache.namespace.has_key("has space")
def test_createfunc(self):
cache = Cache('test', **self.CACHE_ARGS)
def createfunc():
createfunc.count += 1
return createfunc.count
createfunc.count = 0
def keepitlocked():
lock = cache.namespace.get_creation_lock('test')
lock.acquire()
keepitlocked.acquired = True
time.sleep(1.0)
lock.release()
keepitlocked.acquired = False
v0 = cache.get_value('test', createfunc=createfunc)
self.assertEqual(v0, 1)
v0 = cache.get_value('test', createfunc=createfunc)
self.assertEqual(v0, 1)
cache.remove_value('test')
begin = datetime.datetime.utcnow()
t = threading.Thread(target=keepitlocked)
t.start()
while not keepitlocked.acquired:
# Wait for the thread that should lock the cache to start.
time.sleep(0.001)
v0 = cache.get_value('test', createfunc=createfunc)
self.assertEqual(v0, 2)
# Ensure that the `get_value` was blocked by the concurrent thread.
assert datetime.datetime.utcnow() - begin > datetime.timedelta(seconds=1)
t.join()
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