[Python-checkins] python/dist/src/Lib/test test_dummy_thread.py,NONE,1.1 test_dummy_threading.py,NONE,1.1
gvanrossum@users.sourceforge.net
gvanrossum@users.sourceforge.net
Mon, 30 Dec 2002 14:30:24 -0800
Update of /cvsroot/python/python/dist/src/Lib/test
In directory sc8-pr-cvs1:/tmp/cvs-serv13682/Lib/test
Added Files:
test_dummy_thread.py test_dummy_threading.py
Log Message:
Brett Cannon's dummy_thread and dummy_threading modules (SF patch
622537), with some nitpicking editorial changes.
--- NEW FILE: test_dummy_thread.py ---
"""Generic thread tests.
Meant to be used by dummy_thread and thread. To allow for different modules
to be used, test_main() can be called with the module to use as the thread
implementation as its sole argument.
"""
import dummy_thread as _thread
import time
import Queue
import random
import unittest
from test import test_support
class LockTests(unittest.TestCase):
"""Test lock objects."""
def setUp(self):
# Create a lock
self.lock = _thread.allocate_lock()
def test_initlock(self):
#Make sure locks start locked
self.failUnless(not self.lock.locked(),
"Lock object is not initialized unlocked.")
def test_release(self):
# Test self.lock.release()
self.lock.acquire()
self.lock.release()
self.failUnless(not self.lock.locked(),
"Lock object did not release properly.")
def test_improper_release(self):
#Make sure release of an unlocked thread raises _thread.error
self.failUnlessRaises(_thread.error, self.lock.release)
def test_cond_acquire_success(self):
#Make sure the conditional acquiring of the lock works.
self.failUnless(self.lock.acquire(0),
"Conditional acquiring of the lock failed.")
def test_cond_acquire_fail(self):
#Test acquiring locked lock returns False
self.lock.acquire(0)
self.failUnless(not self.lock.acquire(0),
"Conditional acquiring of a locked lock incorrectly "
"succeeded.")
def test_uncond_acquire_success(self):
#Make sure unconditional acquiring of a lock works.
self.lock.acquire()
self.failUnless(self.lock.locked(),
"Uncondional locking failed.")
def test_uncond_acquire_return_val(self):
#Make sure that an unconditional locking returns True.
self.failUnless(self.lock.acquire(1) is True,
"Unconditional locking did not return True.")
def test_uncond_acquire_blocking(self):
#Make sure that unconditional acquiring of a locked lock blocks.
def delay_unlock(to_unlock, delay):
"""Hold on to lock for a set amount of time before unlocking."""
time.sleep(delay)
to_unlock.release()
self.lock.acquire()
delay = 1 #In seconds
start_time = int(time.time())
_thread.start_new_thread(delay_unlock,(self.lock, delay))
if test_support.verbose:
print
print "*** Waiting for thread to release the lock "\
"(approx. %s sec.) ***" % delay
self.lock.acquire()
end_time = int(time.time())
if test_support.verbose:
print "done"
self.failUnless((end_time - start_time) >= delay,
"Blocking by unconditional acquiring failed.")
class MiscTests(unittest.TestCase):
"""Miscellaneous tests."""
def test_exit(self):
#Make sure _thread.exit() raises SystemExit
self.failUnlessRaises(SystemExit, _thread.exit)
def test_ident(self):
#Test sanity of _thread.get_ident()
self.failUnless(isinstance(_thread.get_ident(), int),
"_thread.get_ident() returned a non-integer")
self.failUnless(_thread.get_ident() != 0,
"_thread.get_ident() returned 0")
def test_LockType(self):
#Make sure _thread.LockType is the same type as _thread.allocate_locke()
self.failUnless(isinstance(_thread.allocate_lock(), _thread.LockType),
"_thread.LockType is not an instance of what is "
"returned by _thread.allocate_lock()")
class ThreadTests(unittest.TestCase):
"""Test thread creation."""
def test_arg_passing(self):
#Make sure that parameter passing works.
def arg_tester(queue, arg1=False, arg2=False):
"""Use to test _thread.start_new_thread() passes args properly."""
queue.put((arg1, arg2))
testing_queue = Queue.Queue(1)
_thread.start_new_thread(arg_tester, (testing_queue, True, True))
result = testing_queue.get()
self.failUnless(result[0] and result[1],
"Argument passing for thread creation using tuple failed")
_thread.start_new_thread(arg_tester, tuple(), {'queue':testing_queue,
'arg1':True, 'arg2':True})
result = testing_queue.get()
self.failUnless(result[0] and result[1],
"Argument passing for thread creation using kwargs failed")
_thread.start_new_thread(arg_tester, (testing_queue, True), {'arg2':True})
result = testing_queue.get()
self.failUnless(result[0] and result[1],
"Argument passing for thread creation using both tuple"
" and kwargs failed")
def test_multi_creation(self):
#Make sure multiple threads can be created.
def queue_mark(queue, delay):
"""Wait for ``delay`` seconds and then put something into ``queue``"""
time.sleep(delay)
queue.put(_thread.get_ident())
thread_count = 5
delay = 1.5
testing_queue = Queue.Queue(thread_count)
if test_support.verbose:
print
print "*** Testing multiple thread creation "\
"(will take approx. %s to %s sec.) ***" % (delay, thread_count)
for count in xrange(thread_count):
_thread.start_new_thread(queue_mark,
(testing_queue, round(random.random(), 1)))
time.sleep(delay)
if test_support.verbose:
print 'done'
self.failUnless(testing_queue.qsize() == thread_count,
"Not all %s threads executed properly after %s sec." %
(thread_count, delay))
def test_main(imported_module=None):
global _thread
if imported_module:
_thread = imported_module
if test_support.verbose:
print
print "*** Using %s as _thread module ***" % _thread
suite = unittest.TestSuite()
suite.addTest(unittest.makeSuite(LockTests))
suite.addTest(unittest.makeSuite(MiscTests))
suite.addTest(unittest.makeSuite(ThreadTests))
test_support.run_suite(suite)
if __name__ == '__main__':
test_main()
--- NEW FILE: test_dummy_threading.py ---
# Very rudimentary test of threading module
# Create a bunch of threads, let each do some work, wait until all are done
from test.test_support import verbose
import random
import dummy_threading as _threading
import time
class TestThread(_threading.Thread):
def run(self):
global running
delay = random.random() * 2
if verbose:
print 'task', self.getName(), 'will run for', delay, 'sec'
sema.acquire()
mutex.acquire()
running = running + 1
if verbose:
print running, 'tasks are running'
mutex.release()
time.sleep(delay)
if verbose:
print 'task', self.getName(), 'done'
mutex.acquire()
running = running - 1
if verbose:
print self.getName(), 'is finished.', running, 'tasks are running'
mutex.release()
sema.release()
def starttasks():
for i in range(numtasks):
t = TestThread(name="<thread %d>"%i)
threads.append(t)
t.start()
def test_main():
# This takes about n/3 seconds to run (about n/3 clumps of tasks, times
# about 1 second per clump).
global numtasks
numtasks = 10
# no more than 3 of the 10 can run at once
global sema
sema = _threading.BoundedSemaphore(value=3)
global mutex
mutex = _threading.RLock()
global running
running = 0
global threads
threads = []
starttasks()
if verbose:
print 'waiting for all tasks to complete'
for t in threads:
t.join()
if verbose:
print 'all tasks done'
if __name__ == '__main__':
test_main()