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Give test_multiprocessing better chance of avoiding timeout failures on Windows

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Richard Oudkerk 2012-05-04 09:44:39 +01:00
parent 9bd9d74996
commit 009b15e2c3
1 changed files with 16 additions and 7 deletions
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23
Lib/test/test_multiprocessing.py
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@ -2699,35 +2699,43 @@ def test_wait_socket_slow(self):
def test_wait_timeout(self): def test_wait_timeout(self):
from multiprocessing.connection import wait from multiprocessing.connection import wait
expected = 1 expected = 5
a, b = multiprocessing.Pipe() a, b = multiprocessing.Pipe()
start = time.time() start = time.time()
res = wait([a, b], 1) res = wait([a, b], expected)
delta = time.time() - start delta = time.time() - start
self.assertEqual(res, []) self.assertEqual(res, [])
self.assertLess(delta, expected + 0.5) self.assertLess(delta, expected + 1)
self.assertGreater(delta, expected - 0.5) self.assertGreater(delta, expected - 1)
b.send(None) b.send(None)
start = time.time() start = time.time()
res = wait([a, b], 1) res = wait([a, b], 20)
delta = time.time() - start delta = time.time() - start
self.assertEqual(res, [a]) self.assertEqual(res, [a])
self.assertLess(delta, 0.4) self.assertLess(delta, 0.4)
@classmethod
def signal_and_sleep(cls, sem, period):
sem.release()
time.sleep(period)
def test_wait_integer(self): def test_wait_integer(self):
from multiprocessing.connection import wait from multiprocessing.connection import wait
expected = 5 expected = 3
sem = multiprocessing.Semaphore(0)
a, b = multiprocessing.Pipe() a, b = multiprocessing.Pipe()
p = multiprocessing.Process(target=time.sleep, args=(expected,)) p = multiprocessing.Process(target=self.signal_and_sleep,
args=(sem, expected))
p.start() p.start()
self.assertIsInstance(p.sentinel, int) self.assertIsInstance(p.sentinel, int)
self.assertTrue(sem.acquire(timeout=20))
start = time.time() start = time.time()
res = wait([a, p.sentinel, b], expected + 20) res = wait([a, p.sentinel, b], expected + 20)
@ -2755,6 +2763,7 @@ def test_wait_integer(self):
self.assertEqual(res, [a, p.sentinel, b]) self.assertEqual(res, [a, p.sentinel, b])
self.assertLess(delta, 0.4) self.assertLess(delta, 0.4)
p.terminate()
p.join() p.join()