1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
|
import unittest
from threading import Thread, Barrier
from itertools import combinations, product
from test.support import threading_helper
threading_helper.requires_working_threading(module=True)
def test_concurrent_iteration(iterator, number_of_threads):
barrier = Barrier(number_of_threads)
def iterator_worker(it):
barrier.wait()
while True:
try:
_ = next(it)
except StopIteration:
return
worker_threads = []
for ii in range(number_of_threads):
worker_threads.append(
Thread(target=iterator_worker, args=[iterator]))
with threading_helper.start_threads(worker_threads):
pass
barrier.reset()
class ItertoolsThreading(unittest.TestCase):
@threading_helper.reap_threads
def test_combinations(self):
number_of_threads = 10
number_of_iterations = 24
for it in range(number_of_iterations):
iterator = combinations((1, 2, 3, 4, 5), 2)
test_concurrent_iteration(iterator, number_of_threads)
@threading_helper.reap_threads
def test_product(self):
number_of_threads = 10
number_of_iterations = 24
for it in range(number_of_iterations):
iterator = product((1, 2, 3, 4, 5), (10, 20, 30))
test_concurrent_iteration(iterator, number_of_threads)
if __name__ == "__main__":
unittest.main()
|
