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import unittest
import sys
from threading import Thread, Barrier
from test.support import threading_helper
threading_helper.requires_working_threading(module=True)
class EnumerateThreading(unittest.TestCase):
@threading_helper.reap_threads
def test_threading(self):
number_of_threads = 10
number_of_iterations = 8
n = 100
start = sys.maxsize - 40
barrier = Barrier(number_of_threads)
def work(enum):
barrier.wait()
while True:
try:
_ = next(enum)
except StopIteration:
break
for it in range(number_of_iterations):
enum = enumerate(tuple(range(start, start + n)))
worker_threads = []
for ii in range(number_of_threads):
worker_threads.append(
Thread(target=work, args=[enum]))
with threading_helper.start_threads(worker_threads):
pass
barrier.reset()
if __name__ == "__main__":
unittest.main()
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