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147 lines
6.2 KiB
Python
147 lines
6.2 KiB
Python
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"""
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Tests for allmydata.util.time_format.
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"""
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import time
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from twisted.trial import unittest
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from allmydata.test.common_util import TimezoneMixin
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from allmydata.util import time_format
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class TimeFormat(unittest.TestCase, TimezoneMixin):
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def test_epoch(self):
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return self._help_test_epoch()
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def test_epoch_in_London(self):
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# Europe/London is a particularly troublesome timezone. Nowadays, its
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# offset from GMT is 0. But in 1970, its offset from GMT was 1.
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# (Apparently in 1970 Britain had redefined standard time to be GMT+1
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# and stayed in standard time all year round, whereas today
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# Europe/London standard time is GMT and Europe/London Daylight
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# Savings Time is GMT+1.) The current implementation of
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# time_format.iso_utc_time_to_localseconds() breaks if the timezone is
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# Europe/London. (As soon as this unit test is done then I'll change
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# that implementation to something that works even in this case...)
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if not self.have_working_tzset():
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raise unittest.SkipTest("This test can't be run on a platform without time.tzset().")
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self.setTimezone("Europe/London")
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return self._help_test_epoch()
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def _help_test_epoch(self):
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origtzname = time.tzname
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s = time_format.iso_utc_time_to_seconds("1970-01-01T00:00:01")
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self.failUnlessEqual(s, 1.0)
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s = time_format.iso_utc_time_to_seconds("1970-01-01_00:00:01")
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self.failUnlessEqual(s, 1.0)
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s = time_format.iso_utc_time_to_seconds("1970-01-01 00:00:01")
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self.failUnlessEqual(s, 1.0)
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self.failUnlessEqual(time_format.iso_utc(1.0), "1970-01-01_00:00:01")
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self.failUnlessEqual(time_format.iso_utc(1.0, sep=" "),
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"1970-01-01 00:00:01")
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now = time.time()
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isostr = time_format.iso_utc(now)
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timestamp = time_format.iso_utc_time_to_seconds(isostr)
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self.failUnlessEqual(int(timestamp), int(now))
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def my_time():
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return 1.0
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self.failUnlessEqual(time_format.iso_utc(t=my_time),
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"1970-01-01_00:00:01")
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e = self.failUnlessRaises(ValueError,
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time_format.iso_utc_time_to_seconds,
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"invalid timestring")
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self.failUnless("not a complete ISO8601 timestamp" in str(e))
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s = time_format.iso_utc_time_to_seconds("1970-01-01_00:00:01.500")
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self.failUnlessEqual(s, 1.5)
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# Look for daylight-savings-related errors.
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thatmomentinmarch = time_format.iso_utc_time_to_seconds("2009-03-20 21:49:02.226536")
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self.failUnlessEqual(thatmomentinmarch, 1237585742.226536)
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self.failUnlessEqual(origtzname, time.tzname)
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def test_iso_utc(self):
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when = 1266760143.7841301
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out = time_format.iso_utc_date(when)
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self.failUnlessEqual(out, "2010-02-21")
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out = time_format.iso_utc_date(t=lambda: when)
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self.failUnlessEqual(out, "2010-02-21")
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out = time_format.iso_utc(when)
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self.failUnlessEqual(out, "2010-02-21_13:49:03.784130")
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out = time_format.iso_utc(when, sep="-")
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self.failUnlessEqual(out, "2010-02-21-13:49:03.784130")
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def test_parse_duration(self):
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p = time_format.parse_duration
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DAY = 24*60*60
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self.failUnlessEqual(p("1 day"), DAY)
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self.failUnlessEqual(p("2 days"), 2*DAY)
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self.failUnlessEqual(p("3 months"), 3*31*DAY)
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self.failUnlessEqual(p("4 mo"), 4*31*DAY)
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self.failUnlessEqual(p("5 years"), 5*365*DAY)
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e = self.failUnlessRaises(ValueError, p, "123")
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self.failUnlessIn("no unit (like day, month, or year) in '123'",
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str(e))
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def test_parse_date(self):
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self.failUnlessEqual(time_format.parse_date("2010-02-21"), 1266710400)
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def test_format_time(self):
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self.failUnlessEqual(time_format.format_time(time.gmtime(0)), '1970-01-01 00:00:00')
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self.failUnlessEqual(time_format.format_time(time.gmtime(60)), '1970-01-01 00:01:00')
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self.failUnlessEqual(time_format.format_time(time.gmtime(60*60)), '1970-01-01 01:00:00')
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seconds_per_day = 60*60*24
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leap_years_1970_to_2014_inclusive = ((2012 - 1968) // 4)
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self.failUnlessEqual(time_format.format_time(time.gmtime(seconds_per_day*((2015 - 1970)*365+leap_years_1970_to_2014_inclusive))), '2015-01-01 00:00:00')
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def test_format_time_y2038(self):
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seconds_per_day = 60*60*24
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leap_years_1970_to_2047_inclusive = ((2044 - 1968) // 4)
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t = (seconds_per_day*
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((2048 - 1970)*365 + leap_years_1970_to_2047_inclusive))
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try:
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gm_t = time.gmtime(t)
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except ValueError:
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raise unittest.SkipTest("Note: this system cannot handle dates after 2037.")
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self.failUnlessEqual(time_format.format_time(gm_t),
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'2048-01-01 00:00:00')
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def test_format_delta(self):
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time_1 = 1389812723
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time_5s_delta = 1389812728
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time_28m7s_delta = 1389814410
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time_1h_delta = 1389816323
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time_1d21h46m49s_delta = 1389977532
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self.failUnlessEqual(
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time_format.format_delta(time_1, time_1), '0s')
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self.failUnlessEqual(
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time_format.format_delta(time_1, time_5s_delta), '5s')
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self.failUnlessEqual(
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time_format.format_delta(time_1, time_28m7s_delta), '28m 7s')
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self.failUnlessEqual(
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time_format.format_delta(time_1, time_1h_delta), '1h 0m 0s')
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self.failUnlessEqual(
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time_format.format_delta(time_1, time_1d21h46m49s_delta), '1d 21h 46m 49s')
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self.failUnlessEqual(
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time_format.format_delta(time_1d21h46m49s_delta, time_1), '-')
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# time_1 with a decimal fraction will make the delta 1s less
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time_1decimal = 1389812723.383963
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self.failUnlessEqual(
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time_format.format_delta(time_1decimal, time_5s_delta), '4s')
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self.failUnlessEqual(
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time_format.format_delta(time_1decimal, time_28m7s_delta), '28m 6s')
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self.failUnlessEqual(
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time_format.format_delta(time_1decimal, time_1h_delta), '59m 59s')
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self.failUnlessEqual(
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time_format.format_delta(time_1decimal, time_1d21h46m49s_delta), '1d 21h 46m 48s')
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