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#!/usr/bin/python
# -*- coding: UTF-8 -*-
import unittest
import libxml2
import threading
from pyxmpp.cache import Cache,CacheSuite,CacheFetcher,CacheItem
from datetime import timedelta,datetime
from time import sleep
class TestClass1:
def __init__(self,adr):
self.adr=adr
def __repr__(self):
return "<TestClass1 %r>" % (self.adr,)
def __cmp__(self,other):
return cmp((self.adr, self.__class__),(other.adr, other.__class__))
class TestClass2:
def __init__(self,adr):
self.adr=adr
def __repr__(self):
return "<TestClass2 %r>" % (self.adr,)
def __cmp__(self,other):
return cmp((self.adr, self.__class__),(other.adr, other.__class__))
def sec(x):
return timedelta(seconds=x)
class TestCacheItem(unittest.TestCase):
def test_item(self):
pre = datetime.utcnow()
o = TestClass1("test_addr")
item = CacheItem("test_addr",o, sec(0.1), sec(0.2), sec(0.3))
post = datetime.utcnow()
self.failUnless(item.timestamp >= pre and item.timestamp <= post)
self.failUnless(item.value is o)
self.failUnless(item.address == "test_addr")
def test_item_state_transitions(self):
item = CacheItem("test_addr","test_value", sec(0.1), sec(0.2), sec(0.3))
# t+0
self.failUnlessEqual(item.state,"new")
state = item.update_state()
self.failUnlessEqual(state,item.state)
self.failUnlessEqual(item.state,"fresh")
sleep(0.01)
# t+~0.01
state = item.update_state()
self.failUnlessEqual(state,item.state)
self.failUnlessEqual(item.state,"fresh")
sleep(0.1)
# t+~0.11
state = item.update_state()
self.failUnlessEqual(state,item.state)
self.failUnlessEqual(item.state,"old")
sleep(0.01)
# t+~0.12
state = item.update_state()
self.failUnlessEqual(state,item.state)
self.failUnlessEqual(item.state,"old")
sleep(0.1)
# t+~0.22
state = item.update_state()
self.failUnlessEqual(state,item.state)
self.failUnlessEqual(item.state,"stale")
sleep(0.01)
# t+~0.23
state = item.update_state()
self.failUnlessEqual(state,item.state)
self.failUnlessEqual(item.state,"stale")
sleep(0.1)
# t+~0.33
state = item.update_state()
self.failUnlessEqual(state,item.state)
self.failUnlessEqual(item.state,"purged")
sleep(0.1)
# t+~0.43
state = item.update_state()
self.failUnlessEqual(state,item.state)
self.failUnlessEqual(item.state,"purged")
class TestCacheFetcher(unittest.TestCase):
def setUp(self):
self.cache = Cache(100)
self.event = None
def make_fetcher(self):
return CacheFetcher(self.cache, "test_addr", sec(1), sec(2), sec(3),
self.object_handler, self.error_handler, self.timeout_handler,
sec(1))
def object_handler(self, address, value, state):
self.event = ("success", address, value, state)
def error_handler(self, address, error_data):
self.event = ("error", address, error_data)
def timeout_handler(self, address):
self.event = ("timeout", address)
def test_fetcher_fetch(self):
fetcher = self.make_fetcher()
self.failUnlessRaises(RuntimeError,fetcher.fetch)
def test_success(self):
fetcher = self.make_fetcher()
fetcher.got_it("test_value")
self.failUnlessEqual(self.event,("success", "test_addr", "test_value", "new"))
self.event = None
fetcher.got_it("test_value")
self.failUnlessEqual(self.event, None)
def test_success_other_state(self):
fetcher = self.make_fetcher()
fetcher.got_it("test_value","stale")
self.failUnlessEqual(self.event,("success", "test_addr", "test_value", "stale"))
def test_error(self):
fetcher = self.make_fetcher()
fetcher.error("test_error")
self.failUnlessEqual(self.event,("error", "test_addr", "test_error"))
self.event = None
fetcher.error("test_error")
self.failUnlessEqual(self.event, None)
def test_timeout(self):
fetcher = self.make_fetcher()
fetcher.timeout()
self.failUnlessEqual(self.event,("timeout", "test_addr"))
self.event = None
fetcher.timeout()
self.failUnlessEqual(self.event, None)
class TestCache(unittest.TestCase):
def setUp(self):
self.event = None
self.force_error = False
fetcher_owner = self
class MyFetcher(CacheFetcher):
owner = fetcher_owner
def fetch(self):
thread = threading.Thread(target=self.thread)
thread.start()
def thread(self):
sleep(0.2)
if self.owner.force_error:
self.error("Forced error")
elif self.address >= 0:
self.got_it("value%i" % (self.address,))
else:
self.error("Negative address")
self.Fetcher = MyFetcher
def test_add_get_item(self):
cache = Cache(100)
item1 = CacheItem("test_addr1","test_value1", sec(1), sec(2), sec(3))
cache.add_item(item1)
item2 = CacheItem("test_addr2","test_value2", sec(1), sec(2), sec(3))
cache.add_item(item2)
item3 = CacheItem("test_addr3","test_value3", sec(1), sec(2), sec(3))
cache.add_item(item3)
gitem2 = cache.get_item("test_addr2","fresh")
self.failUnless(gitem2 is item2, "gitem2=%r item2=%r" % (gitem2, item2))
gitem1 = cache.get_item("test_addr1","old")
self.failUnless(gitem1 is item1, "gitem2=%r item2=%r" % (gitem2, item2))
gitem3 = cache.get_item("test_addr3","stale")
self.failUnless(gitem3 is item3, "gitem2=%r item2=%r" % (gitem2, item2))
gitem1 = cache.get_item("test_addr1","new")
self.failUnless(gitem1 is None, "gitem1=%r" % (gitem1,))
def test_max_items(self):
cache = Cache(10)
self.failUnlessEqual(cache.num_items(),0,"number of items: "+`cache.num_items()`)
for i in range(10):
item = CacheItem(i,i, sec(1), sec(2), sec(3))
cache.add_item(item)
self.failUnlessEqual(cache.num_items(),10,"number of items: "+`cache.num_items()`)
for i in range(10,30):
item = CacheItem(i,i, sec(1), sec(2), sec(3))
cache.add_item(item)
self.failUnless(cache.num_items() > 7,"number of items: "+`cache.num_items()`)
self.failUnless(cache.num_items() <= 10,"number of items: "+`cache.num_items()`)
self.failUnlessEqual(cache.num_items(),len(cache._items),
"number of items: %r, in dict: %r" % (cache.num_items(), cache._items))
def test_item_expiration(self):
cache = Cache(100)
item = CacheItem("test_addr","test_value", sec(0.1), sec(0.2), sec(0.3))
cache.add_item(item)
gitem = cache.get_item("test_addr","fresh")
self.failUnlessEqual(gitem,item)
sleep(0.01)
gitem = cache.get_item("test_addr","fresh")
self.failUnlessEqual(gitem,item)
sleep(0.1)
gitem = cache.get_item("test_addr","fresh")
self.failUnlessEqual(gitem,None)
cache.tick()
gitem = cache.get_item("test_addr","old")
self.failUnlessEqual(gitem,item)
sleep(0.3)
cache.tick()
gitem = cache.get_item("test_addr","stale")
self.failUnlessEqual(gitem,None)
self.failUnlessEqual(cache.num_items(),0,"number of items: "+`cache.num_items()`)
def test_request_object_success(self):
cache = Cache(100)
cache.set_fetcher(self.Fetcher)
cache.request_object(1, "fresh", self.object_handler,
self.error_handler, self.timeout_handler)
self.failUnlessEqual(self.event,None,"Early event: %r" % (self.event,))
sleep(0.05)
self.failUnlessEqual(self.event,None,"Early event: %r" % (self.event,))
sleep(0.3)
self.failUnlessEqual(self.event,("success", 1, "value1", "new"))
self.event = None
cache.request_object(1, "fresh", self.object_handler,
self.error_handler, self.timeout_handler)
self.failUnlessEqual(self.event,("success", 1, "value1", "fresh"))
self.event = None
cache.request_object(2, "fresh", self.object_handler,
self.error_handler, self.timeout_handler)
self.failUnlessEqual(self.event,None,"Early event: %r" % (self.event,))
sleep(0.05)
cache.tick()
self.failUnlessEqual(self.event,None,"Early event: %r" % (self.event,))
sleep(0.3)
cache.tick()
self.failUnlessEqual(self.event,("success", 2, "value2", "new"))
self.event = None
cache.request_object(2, "fresh", self.object_handler,
self.error_handler, self.timeout_handler)
self.failUnlessEqual(self.event,("success", 2, "value2", "fresh"))
cache.tick()
self.event = None
cache.request_object(1, "fresh", self.object_handler,
self.error_handler, self.timeout_handler)
self.failUnlessEqual(self.event,("success", 1, "value1", "fresh"))
def test_request_object_backup(self):
cache = Cache(100)
cache.set_fetcher(self.Fetcher)
cache.request_object(1, "fresh", self.object_handler,
self.error_handler, self.timeout_handler)
self.failUnlessEqual(self.event,None,"Early event: %r" % (self.event,))
sleep(0.05)
self.failUnlessEqual(self.event,None,"Early event: %r" % (self.event,))
sleep(0.3)
self.failUnlessEqual(self.event,("success", 1, "value1", "new"))
self.event = None
self.force_error = True
cache.request_object(1, "new", self.object_handler,
self.error_handler, self.timeout_handler)
self.failUnlessEqual(self.event,None,"Early event: %r" % (self.event,))
sleep(0.05)
self.failUnlessEqual(self.event,None,"Early event: %r" % (self.event,))
sleep(0.3)
self.failUnlessEqual(self.event,("error", 1, "Forced error"))
self.event = None
self.force_error = True
cache.request_object(1, "new", self.object_handler,
self.error_handler, self.timeout_handler,
backup_state = "stale")
self.failUnlessEqual(self.event,None,"Early event: %r" % (self.event,))
sleep(0.05)
self.failUnlessEqual(self.event,None,"Early event: %r" % (self.event,))
sleep(0.3)
self.failUnlessEqual(self.event,("success", 1, "value1", "stale"))
def test_request_object_failure(self):
cache = Cache(100)
cache.set_fetcher(self.Fetcher)
cache.request_object(-1, "fresh", self.object_handler,
self.error_handler, self.timeout_handler)
self.failUnlessEqual(self.event,None,"Early event: %r" % (self.event,))
sleep(0.05)
cache.tick()
self.failUnlessEqual(self.event,None,"Early event: %r" % (self.event,))
sleep(0.3)
cache.tick()
self.failUnlessEqual(self.event,("error", -1, "Negative address"))
def test_request_object_timeout(self):
cache = Cache(100)
cache.set_fetcher(self.Fetcher)
cache.request_object(1, "fresh", self.object_handler,
self.error_handler, self.timeout_handler,
timeout=timedelta(seconds=0.1))
self.failUnlessEqual(self.event,None,"Early event: %r" % (self.event,))
sleep(0.05)
cache.tick()
self.failUnlessEqual(self.event,None,"Early event: %r" % (self.event,))
sleep(0.05)
cache.tick()
sleep(0.05)
cache.tick()
sleep(0.05)
cache.tick()
sleep(0.3)
cache.tick()
self.failUnlessEqual(self.event,("timeout", 1))
def object_handler(self, address, value, state):
self.event = ("success", address, value, state)
def error_handler(self, address, error_data):
self.event = ("error", address, error_data)
def timeout_handler(self, address):
self.event = ("timeout", address)
class TestCacheSuite(unittest.TestCase):
def setUp(self):
self.event = None
self.force_error = False
fetcher_owner = self
class MyFetcher(CacheFetcher):
cls = None
owner = fetcher_owner
def fetch(self):
thread = threading.Thread(target=self.thread)
thread.start()
def thread(self):
sleep(0.2)
if self.owner.force_error:
self.error("Forced error")
elif self.address >= 0:
self.got_it(self.cls(self.address))
else:
self.error("Negative address")
class MyFetcher1(MyFetcher):
cls = TestClass1
class MyFetcher2(MyFetcher):
cls = TestClass2
self.Fetcher1 = MyFetcher1
self.Fetcher2 = MyFetcher2
def test_request_object_success(self):
cache = CacheSuite(100)
cache.register_fetcher(TestClass1, self.Fetcher1)
cache.register_fetcher(TestClass2, self.Fetcher2)
cache.request_object(TestClass1, 1, "fresh", self.object_handler,
self.error_handler, self.timeout_handler)
self.failUnlessEqual(self.event,None,"Early event: %r" % (self.event,))
sleep(0.05)
self.failUnlessEqual(self.event,None,"Early event: %r" % (self.event,))
sleep(0.3)
self.failUnlessEqual(self.event,("success", 1, TestClass1(1), "new"))
self.event = None
cache.request_object(TestClass1, 1, "fresh", self.object_handler,
self.error_handler, self.timeout_handler)
self.failUnlessEqual(self.event,("success", 1, TestClass1(1), "fresh"))
self.event = None
cache.request_object(TestClass2, 2, "fresh", self.object_handler,
self.error_handler, self.timeout_handler)
self.failUnlessEqual(self.event,None,"Early event: %r" % (self.event,))
sleep(0.05)
cache.tick()
self.failUnlessEqual(self.event,None,"Early event: %r" % (self.event,))
sleep(0.3)
cache.tick()
self.failUnlessEqual(self.event,("success", 2, TestClass2(2), "new"))
self.event = None
cache.request_object(TestClass2, 2, "fresh", self.object_handler,
self.error_handler, self.timeout_handler)
self.failUnlessEqual(self.event,("success", 2, TestClass2(2), "fresh"))
def object_handler(self, address, value, state):
self.event = ("success", address, value, state)
def error_handler(self, address, error_data):
self.event = ("error", address, error_data)
def timeout_handler(self, address):
self.event = ("timeout", address)
def suite():
suite = unittest.TestSuite()
suite.addTest(unittest.makeSuite(TestCacheItem))
suite.addTest(unittest.makeSuite(TestCacheFetcher))
suite.addTest(unittest.makeSuite(TestCache))
suite.addTest(unittest.makeSuite(TestCacheSuite))
return suite
if __name__ == '__main__':
unittest.TextTestRunner(verbosity=2).run(suite())
# vi: sts=4 et sw=4
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