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Issue #20320: select.select() and select.kqueue.control() now round the timeout

Browse source 
aways from zero, instead of rounding towards zero.

It should make test_asyncio more reliable, especially test_timeout_rounding() test.
This commit is contained in:
Victor Stinner 2014-02-17 00:02:43 +01:00
parent 23f628de4a
commit 3c1b379ebd
10 changed files with 179 additions and 62 deletions
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130
Lib/test/test_time.py
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@ -14,6 +14,8 @@ except ImportError:
SIZEOF_INT = sysconfig.get_config_var('SIZEOF_INT') or 4
TIME_MAXYEAR = (1 << 8 * SIZEOF_INT - 1) - 1
TIME_MINYEAR = -TIME_MAXYEAR - 1
_PyTime_ROUND_DOWN = 0
_PyTime_ROUND_UP = 1
class TimeTestCase(unittest.TestCase):
@ -585,58 +587,116 @@ class TestPytime(unittest.TestCase):
@support.cpython_only
def test_time_t(self):
from _testcapi import pytime_object_to_time_t
for obj, time_t in (
(0, 0),
(-1, -1),
(-1.0, -1),
(-1.9, -1),
(1.0, 1),
(1.9, 1),
for obj, time_t, rnd in (
# Round towards zero
(0, 0, _PyTime_ROUND_DOWN),
(-1, -1, _PyTime_ROUND_DOWN),
(-1.0, -1, _PyTime_ROUND_DOWN),
(-1.9, -1, _PyTime_ROUND_DOWN),
(1.0, 1, _PyTime_ROUND_DOWN),
(1.9, 1, _PyTime_ROUND_DOWN),
# Round away from zero
(0, 0, _PyTime_ROUND_UP),
(-1, -1, _PyTime_ROUND_UP),
(-1.0, -1, _PyTime_ROUND_UP),
(-1.9, -2, _PyTime_ROUND_UP),
(1.0, 1, _PyTime_ROUND_UP),
(1.9, 2, _PyTime_ROUND_UP),
):
self.assertEqual(pytime_object_to_time_t(obj), time_t)
self.assertEqual(pytime_object_to_time_t(obj, rnd), time_t)
rnd = _PyTime_ROUND_DOWN
for invalid in self.invalid_values:
self.assertRaises(OverflowError, pytime_object_to_time_t, invalid)
self.assertRaises(OverflowError,
pytime_object_to_time_t, invalid, rnd)
@support.cpython_only
def test_timeval(self):
from _testcapi import pytime_object_to_timeval
for obj, timeval in (
(0, (0, 0)),
(-1, (-1, 0)),
(-1.0, (-1, 0)),
(1e-6, (0, 1)),
(-1e-6, (-1, 999999)),
(-1.2, (-2, 800000)),
(1.1234560, (1, 123456)),
(1.1234569, (1, 123456)),
(-1.1234560, (-2, 876544)),
(-1.1234561, (-2, 876543)),
for obj, timeval, rnd in (
# Round towards zero
(0, (0, 0), _PyTime_ROUND_DOWN),
(-1, (-1, 0), _PyTime_ROUND_DOWN),
(-1.0, (-1, 0), _PyTime_ROUND_DOWN),
(1e-6, (0, 1), _PyTime_ROUND_DOWN),
(1e-7, (0, 0), _PyTime_ROUND_DOWN),
(-1e-6, (-1, 999999), _PyTime_ROUND_DOWN),
(-1e-7, (-1, 999999), _PyTime_ROUND_DOWN),
(-1.2, (-2, 800000), _PyTime_ROUND_DOWN),
(0.9999999, (0, 999999), _PyTime_ROUND_DOWN),
(0.0000041, (0, 4), _PyTime_ROUND_DOWN),
(1.1234560, (1, 123456), _PyTime_ROUND_DOWN),
(1.1234569, (1, 123456), _PyTime_ROUND_DOWN),
(-0.0000040, (-1, 999996), _PyTime_ROUND_DOWN),
(-0.0000041, (-1, 999995), _PyTime_ROUND_DOWN),
(-1.1234560, (-2, 876544), _PyTime_ROUND_DOWN),
(-1.1234561, (-2, 876543), _PyTime_ROUND_DOWN),
# Round away from zero
(0, (0, 0), _PyTime_ROUND_UP),
(-1, (-1, 0), _PyTime_ROUND_UP),
(-1.0, (-1, 0), _PyTime_ROUND_UP),
(1e-6, (0, 1), _PyTime_ROUND_UP),
(1e-7, (0, 1), _PyTime_ROUND_UP),
(-1e-6, (-1, 999999), _PyTime_ROUND_UP),
(-1e-7, (-1, 999999), _PyTime_ROUND_UP),
(-1.2, (-2, 800000), _PyTime_ROUND_UP),
(0.9999999, (1, 0), _PyTime_ROUND_UP),
(0.0000041, (0, 5), _PyTime_ROUND_UP),
(1.1234560, (1, 123457), _PyTime_ROUND_UP),
(1.1234569, (1, 123457), _PyTime_ROUND_UP),
(-0.0000040, (-1, 999996), _PyTime_ROUND_UP),
(-0.0000041, (-1, 999995), _PyTime_ROUND_UP),
(-1.1234560, (-2, 876544), _PyTime_ROUND_UP),
(-1.1234561, (-2, 876543), _PyTime_ROUND_UP),
):
self.assertEqual(pytime_object_to_timeval(obj), timeval)
with self.subTest(obj=obj, round=rnd, timeval=timeval):
self.assertEqual(pytime_object_to_timeval(obj, rnd), timeval)
rnd = _PyTime_ROUND_DOWN
for invalid in self.invalid_values:
self.assertRaises(OverflowError, pytime_object_to_timeval, invalid)
self.assertRaises(OverflowError,
pytime_object_to_timeval, invalid, rnd)
@support.cpython_only
def test_timespec(self):
from _testcapi import pytime_object_to_timespec
for obj, timespec in (
(0, (0, 0)),
(-1, (-1, 0)),
(-1.0, (-1, 0)),
(1e-9, (0, 1)),
(-1e-9, (-1, 999999999)),
(-1.2, (-2, 800000000)),
(1.1234567890, (1, 123456789)),
(1.1234567899, (1, 123456789)),
(-1.1234567890, (-2, 876543211)),
(-1.1234567891, (-2, 876543210)),
for obj, timespec, rnd in (
# Round towards zero
(0, (0, 0), _PyTime_ROUND_DOWN),
(-1, (-1, 0), _PyTime_ROUND_DOWN),
(-1.0, (-1, 0), _PyTime_ROUND_DOWN),
(1e-9, (0, 1), _PyTime_ROUND_DOWN),
(1e-10, (0, 0), _PyTime_ROUND_DOWN),
(-1e-9, (-1, 999999999), _PyTime_ROUND_DOWN),
(-1e-10, (-1, 999999999), _PyTime_ROUND_DOWN),
(-1.2, (-2, 800000000), _PyTime_ROUND_DOWN),
(0.9999999999, (0, 999999999), _PyTime_ROUND_DOWN),
(1.1234567890, (1, 123456789), _PyTime_ROUND_DOWN),
(1.1234567899, (1, 123456789), _PyTime_ROUND_DOWN),
(-1.1234567890, (-2, 876543211), _PyTime_ROUND_DOWN),
(-1.1234567891, (-2, 876543210), _PyTime_ROUND_DOWN),
# Round away from zero
(0, (0, 0), _PyTime_ROUND_UP),
(-1, (-1, 0), _PyTime_ROUND_UP),
(-1.0, (-1, 0), _PyTime_ROUND_UP),
(1e-9, (0, 1), _PyTime_ROUND_UP),
(1e-10, (0, 1), _PyTime_ROUND_UP),
(-1e-9, (-1, 999999999), _PyTime_ROUND_UP),
(-1e-10, (-1, 999999999), _PyTime_ROUND_UP),
(-1.2, (-2, 800000000), _PyTime_ROUND_UP),
(0.9999999999, (1, 0), _PyTime_ROUND_UP),
(1.1234567890, (1, 123456790), _PyTime_ROUND_UP),
(1.1234567899, (1, 123456790), _PyTime_ROUND_UP),
(-1.1234567890, (-2, 876543211), _PyTime_ROUND_UP),
(-1.1234567891, (-2, 876543210), _PyTime_ROUND_UP),
):
self.assertEqual(pytime_object_to_timespec(obj), timespec)
with self.subTest(obj=obj, round=rnd, timespec=timespec):
self.assertEqual(pytime_object_to_timespec(obj, rnd), timespec)
rnd = _PyTime_ROUND_DOWN
for invalid in self.invalid_values:
self.assertRaises(OverflowError, pytime_object_to_timespec, invalid)
self.assertRaises(OverflowError,
pytime_object_to_timespec, invalid, rnd)
@unittest.skipUnless(time._STRUCT_TM_ITEMS == 11, "needs tm_zone support")
def test_localtime_timezone(self):