def test_select_for_update_locks_released(self):
lock_impl = lock.SelectForUpdateLock(attempts=4)
thread1 = threading.Thread(target=self.run_with_lock_and_release,
args=[lock_impl])
thread2 = threading.Thread(target=self.run_with_lock_and_release,
args=[lock_impl])
thread1.start()
thread2.start()
thread1.join()
thread2.join()
try:
self.exception_queue.get(True, 1)
self.fail('Thread was blocked')
except queue.Empty:
pass
def test_select_for_update_locks(self):
lock_impl = lock.SelectForUpdateLock(attempts=1)
thread1 = threading.Thread(target=self.run_with_lock, args=[lock_impl])
thread2 = threading.Thread(target=self.run_with_lock, args=[lock_impl])
thread1.start()
thread2.start()
try:
self.exception_queue.get(True, 10)
except queue.Empty:
self.fail('No thread was blocked')
finally:
self.finished = True
thread1.join()
thread2.join()
def test_func():
lock_impl = lock.SelectForUpdateLock(attempts=4)
with lock_impl(Test.TestFlow)(Test.TestFlow, self.process.pk):
raise DatabaseError('Test')
