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#!/usr/bin/env python
# ClusterShell timer test suite
# Written by S. Thiell 2009-02-15
"""Unit test for ClusterShell Task's timer"""
import copy
import thread
from time import sleep, time
import sys
import unittest
sys.path.insert(0, '../lib')
from ClusterShell.Engine.Engine import EngineTimer, EngineIllegalOperationError
from ClusterShell.Event import EventHandler
from ClusterShell.Task import *
EV_START=0x01
EV_READ=0x02
EV_WRITTEN=0x04
EV_HUP=0x08
EV_TIMEOUT=0x10
EV_CLOSE=0x20
EV_TIMER=0x40
class TaskTimerTest(unittest.TestCase):
class TSimpleTimerChecker(EventHandler):
def __init__(self):
self.count = 0
def ev_timer(self, timer):
self.count += 1
def testSimpleTimer(self):
"""test simple timer"""
task = task_self()
self.assert_(task != None)
# init event handler for timer's callback
test_handler = self.__class__.TSimpleTimerChecker()
timer1 = task.timer(1.0, handler=test_handler)
self.assert_(timer1 != None)
# run task
task.resume()
self.assertEqual(test_handler.count, 1)
def testSimpleTimer2(self):
"""test simple 2 timers with same fire_date"""
task = task_self()
self.assert_(task != None)
test_handler = self.__class__.TSimpleTimerChecker()
timer1 = task.timer(1.0, handler=test_handler)
self.assert_(timer1 != None)
timer2 = task.timer(1.0, handler=test_handler)
self.assert_(timer2 != None)
task.resume()
self.assertEqual(test_handler.count, 2)
def testSimpleTimerImmediate(self):
"""test simple immediate timer"""
task = task_self()
self.assert_(task != None)
test_handler = self.__class__.TSimpleTimerChecker()
timer1 = task.timer(0.0, handler=test_handler)
self.assert_(timer1 != None)
task.resume()
self.assertEqual(test_handler.count, 1)
def testSimpleTimerImmediate2(self):
"""test simple immediate timers"""
task = task_self()
self.assert_(task != None)
test_handler = self.__class__.TSimpleTimerChecker()
for i in range(10):
timer1 = task.timer(0.0, handler=test_handler)
self.assert_(timer1 != None)
task.resume()
self.assertEqual(test_handler.count, 10)
class TRepeaterTimerChecker(EventHandler):
def __init__(self):
self.count = 0
def ev_timer(self, timer):
self.count += 1
timer.set_nextfire(0.5)
if self.count > 4:
timer.invalidate()
def testSimpleRepeater(self):
"""test simple repeater timer"""
task = task_self()
self.assert_(task != None)
# init event handler for timer's callback
test_handler = self.__class__.TRepeaterTimerChecker()
timer1 = task.timer(1.0, interval=0.5, handler=test_handler)
self.assert_(timer1 != None)
# run task
task.resume()
self.assertEqual(test_handler.count, 5)
def testRepeaterInvalidatedTwice(self):
"""test repeater timer invalidated two times"""
task = task_self()
self.assert_(task != None)
# init event handler for timer's callback
test_handler = self.__class__.TRepeaterTimerChecker()
timer1 = task.timer(1.0, interval=0.5, handler=test_handler)
self.assert_(timer1 != None)
# run task
task.resume()
self.assertEqual(test_handler.count, 5)
# force invalidation again (2d time), this should do nothing
timer1.invalidate()
# call handler one more time directly: set_nextfire should raise an error
self.assertRaises(EngineIllegalOperationError, test_handler.ev_timer, timer1)
# force invalidation again (3th), this should do nothing
timer1.invalidate()
def launchSimplePrecisionTest(self, delay):
task = task_self()
self.assert_(task != None)
# init event handler for timer's callback
test_handler = self.__class__.TSimpleTimerChecker()
timer1 = task.timer(delay, handler=test_handler)
self.assert_(timer1 != None)
t1 = time()
# run task
task.resume()
t2 = time()
check_precision = 0.05
self.assert_(abs((t2 - t1) - delay) < check_precision, \
"%f >= %f" % (abs((t2 - t1) - delay), check_precision))
self.assertEqual(test_handler.count, 1)
def testPrecision1(self):
"""test simple timer precision (0.1s)"""
self.launchSimplePrecisionTest(0.1)
def testPrecision2(self):
"""test simple timer precision (1.0s)"""
self.launchSimplePrecisionTest(1.0)
def testWorkersAndTimer(self):
"""test task with timer and local jobs"""
task0 = task_self()
self.assert_(task0 != None)
worker1 = task0.shell("/bin/hostname")
worker2 = task0.shell("/bin/uname -a")
test_handler = self.__class__.TSimpleTimerChecker()
timer1 = task0.timer(1.0, handler=test_handler)
self.assert_(timer1 != None)
task0.resume()
self.assertEqual(test_handler.count, 1)
b1 = copy.copy(worker1.read())
b2 = copy.copy(worker2.read())
worker1 = task0.shell("/bin/hostname")
self.assert_(worker1 != None)
worker2 = task0.shell("/bin/uname -a")
self.assert_(worker2 != None)
timer1 = task0.timer(1.0, handler=test_handler)
self.assert_(timer1 != None)
task0.resume()
self.assertEqual(test_handler.count, 2) # same handler, called 2 times
self.assert_(worker2.read() == b2)
self.assert_(worker1.read() == b1)
def testNTimers(self):
"""test multiple timers"""
task = task_self()
self.assert_(task != None)
# init event handler for timer's callback
test_handler = self.__class__.TSimpleTimerChecker()
for i in range(0, 30):
timer1 = task.timer(1.0 + 0.2 * i, handler=test_handler)
self.assert_(timer1 != None)
# run task
task.resume()
self.assertEqual(test_handler.count, 30)
class TEventHandlerTimerInvalidate(EventHandler):
"""timer operations event handler simulator"""
def __init__(self, test):
self.test = test
self.timer = None
self.timer_count = 0
self.flags = 0
def ev_start(self, worker):
self.flags |= EV_START
def ev_read(self, worker):
self.test.assertEqual(self.flags, EV_START)
self.flags |= EV_READ
def ev_written(self, worker):
self.test.assert_(self.flags & EV_START)
self.flags |= EV_WRITTEN
def ev_hup(self, worker):
self.test.assert_(self.flags & EV_START)
self.flags |= EV_HUP
def ev_timeout(self, worker):
self.test.assert_(self.flags & EV_START)
self.flags |= EV_TIMEOUT
def ev_close(self, worker):
self.test.assert_(self.flags & EV_START)
self.flags |= EV_CLOSE
def ev_timer(self, timer):
self.flags |= EV_TIMER
self.timer_count += 1
self.timer.invalidate()
def testTimerInvalidateInHandler(self):
"""test timer invalidate in event handler"""
task = task_self()
self.assert_(task != None)
test_eh = self.__class__.TEventHandlerTimerInvalidate(self)
# init worker
worker = task.shell("/bin/sleep 1", handler=test_eh)
self.assert_(worker != None)
worker = task.shell("/bin/sleep 3", nodes='localhost', handler=test_eh)
self.assert_(worker != None)
# init timer
timer = task.timer(1.5, interval=0.5, handler=test_eh)
self.assert_(timer != None)
test_eh.timer = timer
# run task
task.resume()
# test timer did fire once
self.assertEqual(test_eh.timer_count, 1)
class TEventHandlerTimerSetNextFire(EventHandler):
def __init__(self, test):
self.test = test
self.timer = None
self.timer_count = 0
self.flags = 0
def ev_start(self, worker):
self.flags |= EV_START
def ev_read(self, worker):
self.test.assertEqual(self.flags, EV_START)
self.flags |= EV_READ
def ev_written(self, worker):
self.test.assert_(self.flags & EV_START)
self.flags |= EV_WRITTEN
def ev_hup(self, worker):
self.test.assert_(self.flags & EV_START)
self.flags |= EV_HUP
def ev_timeout(self, worker):
self.test.assert_(self.flags & EV_START)
self.flags |= EV_TIMEOUT
def ev_close(self, worker):
self.test.assert_(self.flags & EV_START)
self.flags |= EV_CLOSE
def ev_timer(self, timer):
self.flags |= EV_TIMER
if self.timer_count < 4:
self.timer.set_nextfire(0.5)
# else invalidate automatically as timer does not repeat
self.timer_count += 1
def testTimerSetNextFireInHandler(self):
"""test timer set_nextfire in event handler"""
task = task_self()
self.assert_(task != None)
test_eh = self.__class__.TEventHandlerTimerSetNextFire(self)
# init worker
worker = task.shell("/bin/sleep 6", nodes='localhost', handler=test_eh)
self.assert_(worker != None)
# init timer
timer = task.timer(2.0, interval=0.2, handler=test_eh)
self.assert_(timer != None)
test_eh.timer = timer
# run task
task.resume()
# test timer did fire one time
self.assertEqual(test_eh.timer_count, 5)
class TEventHandlerTimerOtherInvalidate(EventHandler):
"""timer operations event handler simulator"""
def __init__(self, test):
self.test = test
self.timer = None
self.flags = 0
def ev_start(self, worker):
self.flags |= EV_START
def ev_read(self, worker):
self.flags |= EV_READ
self.timer.invalidate()
def ev_written(self, worker):
self.test.assert_(self.flags & EV_START)
self.flags |= EV_WRITTEN
def ev_hup(self, worker):
self.test.assert_(self.flags & EV_START)
self.flags |= EV_HUP
def ev_timeout(self, worker):
self.test.assert_(self.flags & EV_START)
self.flags |= EV_TIMEOUT
def ev_close(self, worker):
self.test.assert_(self.flags & EV_START)
self.flags |= EV_CLOSE
def ev_timer(self, timer):
self.flags |= EV_TIMER
def testTimerInvalidateInOtherHandler(self):
"""test timer invalidate in other event handler"""
task = task_self()
self.assert_(task != None)
test_eh = self.__class__.TEventHandlerTimerOtherInvalidate(self)
# init worker
worker = task.shell("/bin/uname -r", handler=test_eh)
self.assert_(worker != None)
worker = task.shell("/bin/sleep 5", nodes='localhost', handler=test_eh)
self.assert_(worker != None)
# init timer
timer = task.timer(4.0, interval=0.5, handler=test_eh)
self.assert_(timer != None)
test_eh.timer = timer
# run task
task.resume()
# test timer didn't fire, invalidated in a worker's event handler
self.assert_(test_eh.flags & EV_READ)
self.assert_(not test_eh.flags & EV_TIMER)
class TEventHandlerTimerOtherSetNextFire(EventHandler):
def __init__(self, test):
self.test = test
self.timer = None
self.timer_count = 0
self.flags = 0
def ev_start(self, worker):
self.flags |= EV_START
def ev_read(self, worker):
self.test.assertEqual(self.flags, EV_START)
self.flags |= EV_READ
def ev_written(self, worker):
self.test.assert_(self.flags & EV_START)
self.flags |= EV_WRITTEN
def ev_hup(self, worker):
self.test.assert_(self.flags & EV_START)
self.flags |= EV_HUP
def ev_timeout(self, worker):
self.test.assert_(self.flags & EV_START)
self.flags |= EV_TIMEOUT
def ev_close(self, worker):
self.test.assert_(self.flags & EV_START)
self.flags |= EV_CLOSE
# set next fire delay, also disable previously setup interval
# (timer will not repeat anymore)
self.timer.set_nextfire(0.5)
def ev_timer(self, timer):
self.flags |= EV_TIMER
self.timer_count += 1
def testTimerSetNextFireInOtherHandler(self):
"""test timer set_nextfire in other event handler"""
task = task_self()
self.assert_(task != None)
test_eh = self.__class__.TEventHandlerTimerOtherSetNextFire(self)
# init worker
worker = task.shell("/bin/sleep 1", nodes='localhost', handler=test_eh)
self.assert_(worker != None)
# init timer
timer = task.timer(10.0, interval=0.5, handler=test_eh)
self.assert_(timer != None)
test_eh.timer = timer
# run task
task.resume()
# test timer did fire one time
self.assertEqual(test_eh.timer_count, 1)
def testAutocloseTimer(self):
"""test timer autoclose (one autoclose timer)"""
task = task_self()
self.assert_(task != None)
# Task should return immediately
test_handler = self.__class__.TSimpleTimerChecker()
timer_ac = task.timer(10.0, handler=test_handler, autoclose=True)
self.assert_(timer_ac != None)
# run task
task.resume()
self.assertEqual(test_handler.count, 0)
def testAutocloseWithTwoTimers(self):
"""test timer autoclose (two timers)"""
task = task_self()
self.assert_(task != None)
# build 2 timers, one of 10 secs with autoclose,
# and one of 1 sec without autoclose.
# Task should return after 1 sec.
test_handler = self.__class__.TSimpleTimerChecker()
timer_ac = task.timer(10.0, handler=test_handler, autoclose=True)
self.assert_(timer_ac != None)
timer_noac = task.timer(1.0, handler=test_handler, autoclose=False)
self.assert_(timer_noac != None)
# run task
task.resume()
self.assertEqual(test_handler.count, 1)
class TForceDelayedRepeaterChecker(EventHandler):
def __init__(self):
self.count = 0
def ev_timer(self, timer):
self.count += 1
if self.count == 1:
# force delay timer (NOT a best practice!)
sleep(4)
# do not invalidate first time
else:
# invalidate next time to stop repeater
timer.invalidate()
def testForceDelayedRepeater(self):
"""test repeater being forcibly delayed"""
task = task_self()
self.assert_(task != None)
test_handler = self.__class__.TForceDelayedRepeaterChecker()
repeater1 = task.timer(1.0, interval=0.5, handler=test_handler)
self.assert_(repeater1 != None)
task.resume()
self.assertEqual(test_handler.count, 2)
def testMultipleAddSameTimerPrivate(self):
"""test multiple add() of same timer [private]"""
task = task_self()
self.assert_(task != None)
test_handler = self.__class__.TSimpleTimerChecker()
timer = EngineTimer(1.0, -1.0, False, test_handler)
self.assert_(timer != None)
task._engine.add_timer(timer)
self.assertRaises(EngineIllegalOperationError, task._engine.add_timer, timer)
task_terminate()
def testRemoveTimerPrivate(self):
"""test engine.remove_timer() [private]"""
# [private] because engine methods are currently private,
# users should use timer.invalidate() instead
task = task_self()
self.assert_(task != None)
test_handler = self.__class__.TSimpleTimerChecker()
timer = EngineTimer(1.0, -1.0, False, test_handler)
self.assert_(timer != None)
task._engine.add_timer(timer)
task._engine.remove_timer(timer)
task_terminate()
def _thread_timer_create_func(self, task):
"""thread used to create a timer for another task; hey why not?"""
timer = task.timer(0.5, self.__class__.TSimpleTimerChecker())
self.assert_(timer != None)
def testTimerAddFromAnotherThread(self):
"""test timer creation from another thread"""
task = task_self()
thread.start_new_thread(TaskTimerTest._thread_timer_create_func, (self, task))
task.resume()
task_wait()
if __name__ == '__main__':
suite = unittest.TestLoader().loadTestsFromTestCase(TaskTimerTest)
unittest.TextTestRunner(verbosity=2).run(suite)
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