| """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() |