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gh-110697: Use CLOCK_RES in test_os.TimerfdTests (#111529)

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More TimerfdTests tests tolerate a difference of 1 ms in measured
elapsed time.
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Victor Stinner 2023-10-30 23:47:59 +01:00 • committed by GitHub
parent 801741ff81
commit 7b153d14ef
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1 changed files with 6 additions and 6 deletions
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12
Lib/test/test_os.py
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@ -4029,7 +4029,7 @@ class TimerfdTests(unittest.TestCase):
t = time.perf_counter() - t t = time.perf_counter() - t
total_time = initial_expiration + interval * (count - 1) total_time = initial_expiration + interval * (count - 1)
self.assertGreater(t, total_time) self.assertGreater(t, total_time - self.CLOCK_RES)
# wait 3.5 time of interval # wait 3.5 time of interval
time.sleep( (count+0.5) * interval) time.sleep( (count+0.5) * interval)
@ -4083,7 +4083,7 @@ class TimerfdTests(unittest.TestCase):
t = time.perf_counter() - t t = time.perf_counter() - t
total_time = initial_expiration + interval * (count - 1) total_time = initial_expiration + interval * (count - 1)
self.assertGreater(t, total_time) self.assertGreater(t, total_time - self.CLOCK_RES)
def check_timerfd_poll(self, nanoseconds): def check_timerfd_poll(self, nanoseconds):
fd = self.timerfd_create(time.CLOCK_REALTIME, flags=os.TFD_NONBLOCK) fd = self.timerfd_create(time.CLOCK_REALTIME, flags=os.TFD_NONBLOCK)
@ -4129,10 +4129,10 @@ class TimerfdTests(unittest.TestCase):
total_time = initial_expiration_ns + interval_ns * (count - 1) total_time = initial_expiration_ns + interval_ns * (count - 1)
if nanoseconds: if nanoseconds:
dt = time.perf_counter_ns() - t dt = time.perf_counter_ns() - t
self.assertGreater(dt, total_time) self.assertGreater(dt, total_time - self.CLOCK_RES_NS)
else: else:
dt = time.perf_counter() - t dt = time.perf_counter() - t
self.assertGreater(dt, total_time / sec_to_nsec) self.assertGreater(dt, total_time / sec_to_nsec - self.CLOCK_RES)
selector.unregister(fd) selector.unregister(fd)
def test_timerfd_poll(self): def test_timerfd_poll(self):
@ -4189,7 +4189,7 @@ class TimerfdTests(unittest.TestCase):
t = time.perf_counter_ns() - t t = time.perf_counter_ns() - t
total_time_ns = initial_expiration_ns + interval_ns * (count - 1) total_time_ns = initial_expiration_ns + interval_ns * (count - 1)
self.assertGreater(t, total_time_ns) self.assertGreater(t, total_time_ns - self.CLOCK_RES_NS)
# wait 3.5 time of interval # wait 3.5 time of interval
time.sleep( (count+0.5) * interval_ns / one_sec_in_nsec) time.sleep( (count+0.5) * interval_ns / one_sec_in_nsec)
@ -4248,7 +4248,7 @@ class TimerfdTests(unittest.TestCase):
t = time.perf_counter_ns() - t t = time.perf_counter_ns() - t
total_time_ns = initial_expiration_ns + interval_ns * (count - 1) total_time_ns = initial_expiration_ns + interval_ns * (count - 1)
self.assertGreater(t, total_time_ns) self.assertGreater(t, total_time_ns - self.CLOCK_RES_NS)
class OSErrorTests(unittest.TestCase): class OSErrorTests(unittest.TestCase):
def setUp(self): def setUp(self):