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from test import test_support
import time
import unittest
class TimeTestCase(unittest.TestCase):
def setUp(self):
self.t = time.time()
def test_data_attributes(self):
time.altzone
time.daylight
time.timezone
time.tzname
def test_clock(self):
time.clock()
def test_conversions(self):
self.assert_(time.ctime(self.t)
== time.asctime(time.localtime(self.t)))
self.assert_(int(time.mktime(time.localtime(self.t)))
== int(self.t))
def test_sleep(self):
time.sleep(1.2)
def test_strftime(self):
tt = time.gmtime(self.t)
for directive in ('a', 'A', 'b', 'B', 'c', 'd', 'H', 'I',
'j', 'm', 'M', 'p', 'S',
'U', 'w', 'W', 'x', 'X', 'y', 'Y', 'Z', '%'):
format = ' %' + directive
try:
time.strftime(format, tt)
except ValueError:
self.fail('conversion specifier: %r failed.' % format)
def test_strftime_bounds_checking(self):
# Make sure that strftime() checks the bounds of the various parts
#of the time tuple (0 is valid for *all* values).
# Check year [1900, max(int)]
self.assertRaises(ValueError, time.strftime, '',
(1899, 1, 1, 0, 0, 0, 0, 1, -1))
if time.accept2dyear:
self.assertRaises(ValueError, time.strftime, '',
(-1, 1, 1, 0, 0, 0, 0, 1, -1))
self.assertRaises(ValueError, time.strftime, '',
(100, 1, 1, 0, 0, 0, 0, 1, -1))
# Check month [1, 12] + zero support
self.assertRaises(ValueError, time.strftime, '',
(1900, -1, 1, 0, 0, 0, 0, 1, -1))
self.assertRaises(ValueError, time.strftime, '',
(1900, 13, 1, 0, 0, 0, 0, 1, -1))
# Check day of month [1, 31] + zero support
self.assertRaises(ValueError, time.strftime, '',
(1900, 1, -1, 0, 0, 0, 0, 1, -1))
self.assertRaises(ValueError, time.strftime, '',
(1900, 1, 32, 0, 0, 0, 0, 1, -1))
# Check hour [0, 23]
self.assertRaises(ValueError, time.strftime, '',
(1900, 1, 1, -1, 0, 0, 0, 1, -1))
self.assertRaises(ValueError, time.strftime, '',
(1900, 1, 1, 24, 0, 0, 0, 1, -1))
# Check minute [0, 59]
self.assertRaises(ValueError, time.strftime, '',
(1900, 1, 1, 0, -1, 0, 0, 1, -1))
self.assertRaises(ValueError, time.strftime, '',
(1900, 1, 1, 0, 60, 0, 0, 1, -1))
# Check second [0, 61]
self.assertRaises(ValueError, time.strftime, '',
(1900, 1, 1, 0, 0, -1, 0, 1, -1))
# C99 only requires allowing for one leap second, but Python's docs say
# allow two leap seconds (0..61)
self.assertRaises(ValueError, time.strftime, '',
(1900, 1, 1, 0, 0, 62, 0, 1, -1))
# No check for upper-bound day of week;
# value forced into range by a ``% 7`` calculation.
# Start check at -2 since gettmarg() increments value before taking
# modulo.
self.assertRaises(ValueError, time.strftime, '',
(1900, 1, 1, 0, 0, 0, -2, 1, -1))
# Check day of the year [1, 366] + zero support
self.assertRaises(ValueError, time.strftime, '',
(1900, 1, 1, 0, 0, 0, 0, -1, -1))
self.assertRaises(ValueError, time.strftime, '',
(1900, 1, 1, 0, 0, 0, 0, 367, -1))
# Check daylight savings flag [-1, 1]
self.assertRaises(ValueError, time.strftime, '',
(1900, 1, 1, 0, 0, 0, 0, 1, -2))
self.assertRaises(ValueError, time.strftime, '',
(1900, 1, 1, 0, 0, 0, 0, 1, 2))
def test_default_values_for_zero(self):
# Make sure that using all zeros uses the proper default values.
# No test for daylight savings since strftime() does not change output
# based on its value.
expected = "2000 01 01 00 00 00 1 001"
result = time.strftime("%Y %m %d %H %M %S %w %j", (0,)*9)
self.assertEquals(expected, result)
def test_strptime(self):
# Should be able to go round-trip from strftime to strptime without
# throwing an exception.
tt = time.gmtime(self.t)
for directive in ('a', 'A', 'b', 'B', 'c', 'd', 'H', 'I',
'j', 'm', 'M', 'p', 'S',
'U', 'w', 'W', 'x', 'X', 'y', 'Y', 'Z', '%'):
format = '%' + directive
strf_output = time.strftime(format, tt)
try:
time.strptime(strf_output, format)
except ValueError:
self.fail("conversion specifier %r failed with '%s' input." %
(format, strf_output))
def test_asctime(self):
time.asctime(time.gmtime(self.t))
self.assertRaises(TypeError, time.asctime, 0)
def test_tzset(self):
if not hasattr(time, "tzset"):
return # Can't test this; don't want the test suite to fail
from os import environ
# Epoch time of midnight Dec 25th 2002. Never DST in northern
# hemisphere.
xmas2002 = 1040774400.0
# These formats are correct for 2002, and possibly future years
# This format is the 'standard' as documented at:
# http://www.opengroup.org/onlinepubs/007904975/basedefs/xbd_chap08.html
# They are also documented in the tzset(3) man page on most Unix
# systems.
eastern = 'EST+05EDT,M4.1.0,M10.5.0'
victoria = 'AEST-10AEDT-11,M10.5.0,M3.5.0'
utc='UTC+0'
org_TZ = environ.get('TZ',None)
try:
# Make sure we can switch to UTC time and results are correct
# Note that unknown timezones default to UTC.
# Note that altzone is undefined in UTC, as there is no DST
environ['TZ'] = eastern
time.tzset()
environ['TZ'] = utc
time.tzset()
self.failUnlessEqual(
time.gmtime(xmas2002), time.localtime(xmas2002)
)
self.failUnlessEqual(time.daylight, 0)
self.failUnlessEqual(time.timezone, 0)
self.failUnlessEqual(time.localtime(xmas2002).tm_isdst, 0)
# Make sure we can switch to US/Eastern
environ['TZ'] = eastern
time.tzset()
self.failIfEqual(time.gmtime(xmas2002), time.localtime(xmas2002))
self.failUnlessEqual(time.tzname, ('EST', 'EDT'))
self.failUnlessEqual(len(time.tzname), 2)
self.failUnlessEqual(time.daylight, 1)
self.failUnlessEqual(time.timezone, 18000)
self.failUnlessEqual(time.altzone, 14400)
self.failUnlessEqual(time.localtime(xmas2002).tm_isdst, 0)
self.failUnlessEqual(len(time.tzname), 2)
# Now go to the southern hemisphere.
environ['TZ'] = victoria
time.tzset()
self.failIfEqual(time.gmtime(xmas2002), time.localtime(xmas2002))
self.failUnless(time.tzname[0] == 'AEST', str(time.tzname[0]))
self.failUnless(time.tzname[1] == 'AEDT', str(time.tzname[1]))
self.failUnlessEqual(len(time.tzname), 2)
self.failUnlessEqual(time.daylight, 1)
self.failUnlessEqual(time.timezone, -36000)
self.failUnlessEqual(time.altzone, -39600)
self.failUnlessEqual(time.localtime(xmas2002).tm_isdst, 1)
finally:
# Repair TZ environment variable in case any other tests
# rely on it.
if org_TZ is not None:
environ['TZ'] = org_TZ
elif 'TZ' in environ:
del environ['TZ']
time.tzset()
def test_insane_timestamps(self):
# It's possible that some platform maps time_t to double,
# and that this test will fail there. This test should
# exempt such platforms (provided they return reasonable
# results!).
for func in time.ctime, time.gmtime, time.localtime:
for unreasonable in -1e200, 1e200:
self.assertRaises(ValueError, func, unreasonable)
def test_ctime_without_arg(self):
# Not sure how to check the values, since the clock could tick
# at any time. Make sure these are at least accepted and
# don't raise errors.
time.ctime()
time.ctime(None)
def test_gmtime_without_arg(self):
gt0 = time.gmtime()
gt1 = time.gmtime(None)
t0 = time.mktime(gt0)
t1 = time.mktime(gt1)
self.assert_(0 <= (t1-t0) < 0.2)
def test_localtime_without_arg(self):
lt0 = time.localtime()
lt1 = time.localtime(None)
t0 = time.mktime(lt0)
t1 = time.mktime(lt1)
self.assert_(0 <= (t1-t0) < 0.2)
def test_main():
test_support.run_unittest(TimeTestCase)
if __name__ == "__main__":
test_main()
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