"""
Unittest for time.strftime
"""
import calendar
import sys
import re
from test import support
import time
import unittest
# helper functions
def fixasctime(s):
if s[8] == ' ':
s = s[:8] + '0' + s[9:]
return s
def escapestr(text, ampm):
"""
Escape text to deal with possible locale values that have regex
syntax while allowing regex syntax used for comparison.
"""
new_text = re.escape(text)
new_text = new_text.replace(re.escape(ampm), ampm)
new_text = new_text.replace(r'\%', '%')
new_text = new_text.replace(r'\:', ':')
new_text = new_text.replace(r'\?', '?')
return new_text
class StrftimeTest(unittest.TestCase):
def _update_variables(self, now):
# we must update the local variables on every cycle
self.gmt = time.gmtime(now)
now = time.localtime(now)
if now[3] < 12: self.ampm='(AM|am)'
else: self.ampm='(PM|pm)'
self.jan1 = time.localtime(time.mktime((now[0], 1, 1, 0, 0, 0, 0, 1, 0)))
try:
if now[8]: self.tz = time.tzname[1]
else: self.tz = time.tzname[0]
except AttributeError:
self.tz = ''
if now[3] > 12: self.clock12 = now[3] - 12
elif now[3] > 0: self.clock12 = now[3]
else: self.clock12 = 12
self.now = now
def setUp(self):
from locale import setlocale, LC_TIME
saved_locale = setlocale(LC_TIME)
setlocale(LC_TIME, 'C')
self.addCleanup(setlocale, LC_TIME, saved_locale)
def test_strftime(self):
now = time.time()
self._update_variables(now)
self.strftest1(now)
self.strftest2(now)
if support.verbose:
print("Strftime test, platform: %s, Python version: %s" % \
(sys.platform, sys.version.split()[0]))
for j in range(-5, 5):
for i in range(25):
arg = now + (i+j*100)*23*3603
self._update_variables(arg)
self.strftest1(arg)
self.strftest2(arg)
def strftest1(self, now):
if support.verbose:
print("strftime test for", time.ctime(now))
now = self.now
# Make sure any characters that could be taken as regex syntax is
# escaped in escapestr()
expectations = (
('%a', calendar.day_abbr[now[6]], 'abbreviated weekday name'),
('%A', calendar.day_name[now[6]], 'full weekday name'),
('%b', calendar.month_abbr[now[1]], 'abbreviated month name'),
('%B', calendar.month_name[now[1]], 'full month name'),
# %c see below
('%d', '%02d' % now[2], 'day of month as number (00-31)'),
('%H', '%02d' % now[3], 'hour (00-23)'),
('%I', '%02d' % self.clock12, 'hour (01-12)'),
('%j', '%03d' % now[7], 'julian day (001-366)'),
('%m', '%02d' % now[1], 'month as number (01-12)'),
('%M', '%02d' % now[4], 'minute, (00-59)'),
('%p', self.ampm, 'AM or PM as appropriate'),
('%S', '%02d' % now[5], 'seconds of current time (00-60)'),
('%U', '%02d' % ((now[7] + self.jan1[6])//7),
'week number of the year (Sun 1st)'),
('%w', '0?%d' % ((1+now[6]) % 7), 'weekday as a number (Sun 1st)'),
('%W', '%02d' % ((now[7] + (self.jan1[6] - 1)%7)//7),
'week number of the year (Mon 1st)'),
# %x see below
('%X', '%02d:%02d:%02d' % (now[3], now[4], now[5]), '%H:%M:%S'),
('%y', '%02d' % (now[0]%100), 'year without century'),
('%Y', '%d' % now[0], 'year with century'),
# %Z see below
('%%', '%', 'single percent sign'),
)
for e in expectations:
# mustn't raise a value error
try:
result = time.strftime(e[0], now)
except ValueError as error:
self.fail("strftime '%s' format gave error: %s" % (e[0], error))
if re.match(escapestr(e[1], self.ampm), result):
continue
if not result or result[0] == '%':
self.fail("strftime does not support standard '%s' format (%s)"
% (e[0], e[2]))
else:
self.fail("Conflict for %s (%s): expected %s, but got %s"
% (e[0], e[2], e[1], result))
def strftest2(self, now):
nowsecs = str(int(now))[:-1]
now = self.now
nonstandard_expectations = (
# These are standard but don't have predictable output
('%c', fixasctime(time.asctime(now)), 'near-asctime() format'),
('%x', '%02d/%02d/%02d' % (now[1], now[2], (now[0]%100)),
'%m/%d/%y %H:%M:%S'),
('%Z', '%s' % self.tz, 'time zone name'),
# These are some platform specific extensions
('%D', '%02d/%02d/%02d' % (now[1], now[2], (now[0]%100)), 'mm/dd/yy'),
('%e', '%2d' % now[2], 'day of month as number, blank padded ( 0-31)'),
('%h', calendar.month_abbr[now[1]], 'abbreviated month name'),
('%k', '%2d' % now[3], 'hour, blank padded ( 0-23)'),
('%n', '\n', 'newline character'),
('%r', '%02d:%02d:%02d %s' % (self.clock12, now[4], now[5], self.ampm),
'%I:%M:%S %p'),
('%R', '%02d:%02d' % (now[3], now[4]), '%H:%M'),
('%s', nowsecs, 'seconds since the Epoch in UCT'),
('%t', '\t', 'tab character'),
('%T', '%02d:%02d:%02d' % (now[3], now[4], now[5]), '%H:%M:%S'),
('%3y', '%03d' % (now[0]%100),
'year without century rendered using fieldwidth'),
)
for e in nonstandard_expectations:
try:
result = time.strftime(e[0], now)
except ValueError as result:
msg = "Error for nonstandard '%s' format (%s): %s" % \
(e[0], e[2], str(result))
if support.verbose:
print(msg)
continue
if re.match(escapestr(e[1], self.ampm), result):
if support.verbose:
print("Supports nonstandard '%s' format (%s)" % (e[0], e[2]))
elif not result or result[0] == '%':
if support.verbose:
print("Does not appear to support '%s' format (%s)" % \
(e[0], e[2]))
else:
if support.verbose:
print("Conflict for nonstandard '%s' format (%s):" % \
(e[0], e[2]))
print(" Expected %s, but got %s" % (e[1], result))
class Y1900Tests(unittest.TestCase):
"""A limitation of the MS C runtime library is that it crashes if
a date before 1900 is passed with a format string containing "%y"
"""
def test_y_before_1900(self):
# Issue #13674, #19634
t = (1899, 1, 1, 0, 0, 0, 0, 0, 0)
if sys.platform.startswith(("aix", "sunos", "solaris")):
with self.assertRaises(ValueError):
time.strftime("%y", t)
else:
self.assertEqual(time.strftime("%y", t), "99")
def test_y_1900(self):
self.assertEqual(
time.strftime("%y", (1900, 1, 1, 0, 0, 0, 0, 0, 0)), "00")
def test_y_after_1900(self):
self.assertEqual(
time.strftime("%y", (2013, 1, 1, 0, 0, 0, 0, 0, 0)), "13")
if __name__ == '__main__':
unittest.main()
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