| """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 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 support.verbose: |
| print() |
| print("*** Waiting for thread to release the lock "\ |
| "(approx. %s sec.) ***" % DELAY) |
| self.lock.acquire() |
| end_time = int(time.time()) |
| if 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 support.verbose: |
| print() |
| print("*** Testing multiple thread creation "\ |
| "(will take approx. %s to %s sec.) ***" % (DELAY, thread_count)) |
| for count in range(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 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 support.verbose: |
| print() |
| print("*** Using %s as _thread module ***" % _thread) |
| support.run_unittest(LockTests, MiscTests, ThreadTests) |
| |
| if __name__ == '__main__': |
| test_main() |