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Issue #22117: Add the new _PyTime_ROUND_FLOOR rounding method for the datetime

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module. time.clock_settime() now uses this rounding method instead of
_PyTime_ROUND_DOWN to handle correctly dates before 1970.
This commit is contained in:
Victor Stinner 2015-03-28 05:02:39 +01:00
parent b3b4544070
commit 02937aab13
5 changed files with 43 additions and 56 deletions
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66
Lib/test/test_time.py
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@ -28,8 +28,13 @@ class _PyTime(enum.IntEnum):
ROUND_DOWN = 0
# Round away from zero
ROUND_UP = 1
# Round towards -Infinity
ROUND_FLOOR = 2
ALL_ROUNDING_METHODS = (_PyTime.ROUND_UP, _PyTime.ROUND_DOWN)
ALL_ROUNDING_METHODS = (
_PyTime.ROUND_UP,
_PyTime.ROUND_DOWN,
_PyTime.ROUND_FLOOR)
class TimeTestCase(unittest.TestCase):
@ -631,53 +636,6 @@ class TestPytime(unittest.TestCase):
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, 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),
):
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, rnd)
@support.cpython_only
def test_timespec(self):
from _testcapi import pytime_object_to_timespec
@ -835,24 +793,31 @@ class TestPyTime_t(unittest.TestCase):
# Conversion giving different results depending on the rounding method
UP = _PyTime.ROUND_UP
DOWN = _PyTime.ROUND_DOWN
FLOOR = _PyTime.ROUND_FLOOR
for obj, ts, rnd in (
# close to zero
( 1e-10, 1, UP),
( 1e-10, 0, DOWN),
( 1e-10, 0, FLOOR),
(-1e-10, 0, DOWN),
(-1e-10, -1, UP),
(-1e-10, -1, FLOOR),
# test rounding of the last nanosecond
( 1.1234567899, 1123456790, UP),
( 1.1234567899, 1123456789, DOWN),
( 1.1234567899, 1123456789, FLOOR),
(-1.1234567899, -1123456789, DOWN),
(-1.1234567899, -1123456790, UP),
(-1.1234567899, -1123456790, FLOOR),
# close to 1 second
( 0.9999999999, 1000000000, UP),
( 0.9999999999, 999999999, DOWN),
( 0.9999999999, 999999999, FLOOR),
(-0.9999999999, -999999999, DOWN),
(-0.9999999999, -1000000000, UP),
(-0.9999999999, -1000000000, FLOOR),
):
with self.subTest(obj=obj, round=rnd, timestamp=ts):
self.assertEqual(PyTime_FromSecondsObject(obj, rnd), ts)
@ -924,18 +889,23 @@ class TestPyTime_t(unittest.TestCase):
UP = _PyTime.ROUND_UP
DOWN = _PyTime.ROUND_DOWN
FLOOR = _PyTime.ROUND_FLOOR
for ns, tv, rnd in (
# nanoseconds
(1, (0, 1), UP),
(1, (0, 0), DOWN),
(1, (0, 0), FLOOR),
(-1, (0, 0), DOWN),
(-1, (-1, 999999), UP),
(-1, (-1, 999999), FLOOR),
# seconds + nanoseconds
(1234567001, (1, 234568), UP),
(1234567001, (1, 234567), DOWN),
(1234567001, (1, 234567), FLOOR),
(-1234567001, (-2, 765433), DOWN),
(-1234567001, (-2, 765432), UP),
(-1234567001, (-2, 765432), FLOOR),
):
with self.subTest(nanoseconds=ns, timeval=tv, round=rnd):
self.assertEqual(PyTime_AsTimeval(ns, rnd), tv)