lib-python.2.7.test.test_dummy_thread.py Maven / Gradle / Ivy
Go to download
Show more of this group Show more artifacts with this name
Show all versions of jython Show documentation
Show all versions of jython Show documentation
Jython is an implementation of the high-level, dynamic, object-oriented
language Python written in 100% Pure Java, and seamlessly integrated with
the Java platform. It thus allows you to run Python on any Java platform.
"""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
DELAY = 0 # Set > 0 when testing a module other than dummy_thread, such as
# the 'thread' module.
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.assertTrue(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.assertTrue(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.assertRaises(_thread.error, self.lock.release)
def test_cond_acquire_success(self):
#Make sure the conditional acquiring of the lock works.
self.assertTrue(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.assertTrue(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.assertTrue(self.lock.locked(),
"Uncondional locking failed.")
def test_uncond_acquire_return_val(self):
#Make sure that an unconditional locking returns True.
self.assertTrue(self.lock.acquire(1) is True,
"Unconditional locking did not return True.")
self.assertTrue(self.lock.acquire() is 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()
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.assertTrue((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.assertRaises(SystemExit, _thread.exit)
def test_ident(self):
#Test sanity of _thread.get_ident()
self.assertIsInstance(_thread.get_ident(), int,
"_thread.get_ident() returned a non-integer")
self.assertTrue(_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.assertIsInstance(_thread.allocate_lock(), _thread.LockType,
"_thread.LockType is not an instance of what "
"is returned by _thread.allocate_lock()")
def test_interrupt_main(self):
#Calling start_new_thread with a function that executes interrupt_main
# should raise KeyboardInterrupt upon completion.
def call_interrupt():
_thread.interrupt_main()
self.assertRaises(KeyboardInterrupt, _thread.start_new_thread,
call_interrupt, tuple())
def test_interrupt_in_main(self):
# Make sure that if interrupt_main is called in main threat that
# KeyboardInterrupt is raised instantly.
self.assertRaises(KeyboardInterrupt, _thread.interrupt_main)
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.assertTrue(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.assertTrue(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.assertTrue(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
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):
if DELAY:
local_delay = round(random.random(), 1)
else:
local_delay = 0
_thread.start_new_thread(queue_mark,
(testing_queue, local_delay))
time.sleep(DELAY)
if test_support.verbose:
print 'done'
self.assertTrue(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, DELAY
if imported_module:
_thread = imported_module
DELAY = 2
if test_support.verbose:
print
print "*** Using %s as _thread module ***" % _thread
test_support.run_unittest(LockTests, MiscTests, ThreadTests)
if __name__ == '__main__':
test_main()