From ae6fa914aa2f43d39ae491ac7d3140dda69702fa Mon Sep 17 00:00:00 2001 From: Sergey Fedoseev Date: Fri, 29 Dec 2017 03:35:41 +0500 Subject: Fixed #28926 -- Fixed loss of precision of big DurationField values on SQLite and MySQL. --- tests/utils_tests/test_duration.py | 18 +++++++++++++++++- 1 file changed, 17 insertions(+), 1 deletion(-) (limited to 'tests/utils_tests') diff --git a/tests/utils_tests/test_duration.py b/tests/utils_tests/test_duration.py index d0564f396f..84a3a0893f 100644 --- a/tests/utils_tests/test_duration.py +++ b/tests/utils_tests/test_duration.py @@ -2,7 +2,9 @@ import datetime import unittest from django.utils.dateparse import parse_duration -from django.utils.duration import duration_iso_string, duration_string +from django.utils.duration import ( + duration_iso_string, duration_microseconds, duration_string, +) class TestDurationString(unittest.TestCase): @@ -79,3 +81,17 @@ class TestParseISODurationRoundtrip(unittest.TestCase): def test_negative(self): duration = datetime.timedelta(days=-1, hours=1, minutes=3, seconds=5) self.assertEqual(parse_duration(duration_iso_string(duration)).total_seconds(), duration.total_seconds()) + + +class TestDurationMicroseconds(unittest.TestCase): + def test(self): + deltas = [ + datetime.timedelta.max, + datetime.timedelta.min, + datetime.timedelta.resolution, + -datetime.timedelta.resolution, + datetime.timedelta(microseconds=8999999999999999), + ] + for delta in deltas: + with self.subTest(delta=delta): + self.assertEqual(datetime.timedelta(microseconds=duration_microseconds(delta)), delta) -- cgit v1.3