| """Generic thread tests.
|
|
|
| Meant to be used by dummy_thread and thread. To allow for different modules
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| to be used, test_main() can be called with the module to use as the thread
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| implementation as its sole argument.
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|
|
| """
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| import dummy_thread as _thread
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| import time
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| import Queue
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| import random
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| import unittest
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| from test import test_support
|
|
|
| DELAY = 0 # Set > 0 when testing a module other than dummy_thread, such as
|
| # the 'thread' module.
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|
|
| class LockTests(unittest.TestCase):
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| """Test lock objects."""
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|
|
| def setUp(self):
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| # Create a lock
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| self.lock = _thread.allocate_lock()
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|
|
| def test_initlock(self):
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| #Make sure locks start locked
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| self.assertTrue(not self.lock.locked(),
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| "Lock object is not initialized unlocked.")
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|
|
| def test_release(self):
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| # Test self.lock.release()
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| self.lock.acquire()
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| self.lock.release()
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| self.assertTrue(not self.lock.locked(),
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| "Lock object did not release properly.")
|
|
|
| def test_improper_release(self):
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| #Make sure release of an unlocked thread raises _thread.error
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| self.assertRaises(_thread.error, self.lock.release)
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|
|
| def test_cond_acquire_success(self):
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| #Make sure the conditional acquiring of the lock works.
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| self.assertTrue(self.lock.acquire(0),
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| "Conditional acquiring of the lock failed.")
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|
|
| def test_cond_acquire_fail(self):
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| #Test acquiring locked lock returns False
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| self.lock.acquire(0)
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| self.assertTrue(not self.lock.acquire(0),
|
| "Conditional acquiring of a locked lock incorrectly "
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| "succeeded.")
|
|
|
| def test_uncond_acquire_success(self):
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| #Make sure unconditional acquiring of a lock works.
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| self.lock.acquire()
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| self.assertTrue(self.lock.locked(),
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| "Uncondional locking failed.")
|
|
|
| def test_uncond_acquire_return_val(self):
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| #Make sure that an unconditional locking returns True.
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| self.assertTrue(self.lock.acquire(1) is True,
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| "Unconditional locking did not return True.")
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| self.assertTrue(self.lock.acquire() is True)
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|
|
| def test_uncond_acquire_blocking(self):
|
| #Make sure that unconditional acquiring of a locked lock blocks.
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| def delay_unlock(to_unlock, delay):
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| """Hold on to lock for a set amount of time before unlocking."""
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| time.sleep(delay)
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| to_unlock.release()
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|
|
| self.lock.acquire()
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| start_time = int(time.time())
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| _thread.start_new_thread(delay_unlock,(self.lock, DELAY))
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| if test_support.verbose:
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| print
|
| print "*** Waiting for thread to release the lock "\
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| "(approx. %s sec.) ***" % DELAY
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| self.lock.acquire()
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| end_time = int(time.time())
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| if test_support.verbose:
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| print "done"
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| self.assertTrue((end_time - start_time) >= DELAY,
|
| "Blocking by unconditional acquiring failed.")
|
|
|
| class MiscTests(unittest.TestCase):
|
| """Miscellaneous tests."""
|
|
|
| def test_exit(self):
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| #Make sure _thread.exit() raises SystemExit
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| self.assertRaises(SystemExit, _thread.exit)
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|
|
| def test_ident(self):
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| #Test sanity of _thread.get_ident()
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| self.assertIsInstance(_thread.get_ident(), int,
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| "_thread.get_ident() returned a non-integer")
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| self.assertTrue(_thread.get_ident() != 0,
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| "_thread.get_ident() returned 0")
|
|
|
| def test_LockType(self):
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| #Make sure _thread.LockType is the same type as _thread.allocate_locke()
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| self.assertIsInstance(_thread.allocate_lock(), _thread.LockType,
|
| "_thread.LockType is not an instance of what "
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| "is returned by _thread.allocate_lock()")
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|
|
| def test_interrupt_main(self):
|
| #Calling start_new_thread with a function that executes interrupt_main
|
| # should raise KeyboardInterrupt upon completion.
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| def call_interrupt():
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| _thread.interrupt_main()
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| self.assertRaises(KeyboardInterrupt, _thread.start_new_thread,
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| call_interrupt, tuple())
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|
|
| def test_interrupt_in_main(self):
|
| # Make sure that if interrupt_main is called in main threat that
|
| # KeyboardInterrupt is raised instantly.
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| 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))
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|
|
| testing_queue = Queue.Queue(1)
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| _thread.start_new_thread(arg_tester, (testing_queue, True, True))
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| result = testing_queue.get()
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| self.assertTrue(result[0] and result[1],
|
| "Argument passing for thread creation using tuple failed")
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| _thread.start_new_thread(arg_tester, tuple(), {'queue':testing_queue,
|
| 'arg1':True, 'arg2':True})
|
| result = testing_queue.get()
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| 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()
|
