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bpo-33723: Fix test_time.test_process_time() (GH-8358)

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The test failed on my laptop because the busy loop took 15.9 ms
whereas the test expects at least 20 ms. Modify test_process_time()
as test_thread_time() has been modified recently: only require 15 ms
instead of 20 ms.
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Victor Stinner 2018-07-21 03:31:51 +02:00 • committed by GitHub
parent b1147e43da
commit e78dace8dc
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13
Lib/test/test_time.py
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@ -496,18 +496,23 @@ class TimeTestCase(unittest.TestCase):
# on Windows
self.assertLess(stop - start, 0.020)
# bpo-33723: A busy loop of 100 ms should increase process_time()
# by at least 15 ms
min_time = 0.015
busy_time = 0.100
# process_time() should include CPU time spent in any thread
start = time.process_time()
busy_wait(0.100)
busy_wait(busy_time)
stop = time.process_time()
self.assertGreaterEqual(stop - start, 0.020) # machine busy?
self.assertGreaterEqual(stop - start, min_time)
t = threading.Thread(target=busy_wait, args=(0.100,))
t = threading.Thread(target=busy_wait, args=(busy_time,))
start = time.process_time()
t.start()
t.join()
stop = time.process_time()
self.assertGreaterEqual(stop - start, 0.020) # machine busy?
self.assertGreaterEqual(stop - start, min_time)
info = time.get_clock_info('process_time')
self.assertTrue(info.monotonic)