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207 lines
7.5 KiB
207 lines
7.5 KiB
3 years ago
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"""
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Unittest for time.strftime
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"""
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import calendar
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import sys
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import re
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from test import support
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import time
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import unittest
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# helper functions
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def fixasctime(s):
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if s[8] == ' ':
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s = s[:8] + '0' + s[9:]
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return s
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def escapestr(text, ampm):
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"""
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Escape text to deal with possible locale values that have regex
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syntax while allowing regex syntax used for comparison.
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"""
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new_text = re.escape(text)
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new_text = new_text.replace(re.escape(ampm), ampm)
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new_text = new_text.replace(r'\%', '%')
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new_text = new_text.replace(r'\:', ':')
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new_text = new_text.replace(r'\?', '?')
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return new_text
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class StrftimeTest(unittest.TestCase):
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def _update_variables(self, now):
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# we must update the local variables on every cycle
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self.gmt = time.gmtime(now)
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now = time.localtime(now)
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if now[3] < 12: self.ampm='(AM|am)'
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else: self.ampm='(PM|pm)'
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self.jan1 = time.localtime(time.mktime((now[0], 1, 1, 0, 0, 0, 0, 1, 0)))
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try:
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if now[8]: self.tz = time.tzname[1]
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else: self.tz = time.tzname[0]
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except AttributeError:
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self.tz = ''
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if now[3] > 12: self.clock12 = now[3] - 12
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elif now[3] > 0: self.clock12 = now[3]
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else: self.clock12 = 12
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self.now = now
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def setUp(self):
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try:
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import java
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java.util.Locale.setDefault(java.util.Locale.US)
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except ImportError:
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from locale import setlocale, LC_TIME
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saved_locale = setlocale(LC_TIME)
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setlocale(LC_TIME, 'C')
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self.addCleanup(setlocale, LC_TIME, saved_locale)
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def test_strftime(self):
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now = time.time()
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self._update_variables(now)
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self.strftest1(now)
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self.strftest2(now)
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if support.verbose:
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print("Strftime test, platform: %s, Python version: %s" % \
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(sys.platform, sys.version.split()[0]))
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for j in range(-5, 5):
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for i in range(25):
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arg = now + (i+j*100)*23*3603
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self._update_variables(arg)
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self.strftest1(arg)
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self.strftest2(arg)
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def strftest1(self, now):
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if support.verbose:
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print("strftime test for", time.ctime(now))
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now = self.now
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# Make sure any characters that could be taken as regex syntax is
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# escaped in escapestr()
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expectations = (
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('%a', calendar.day_abbr[now[6]], 'abbreviated weekday name'),
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('%A', calendar.day_name[now[6]], 'full weekday name'),
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('%b', calendar.month_abbr[now[1]], 'abbreviated month name'),
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('%B', calendar.month_name[now[1]], 'full month name'),
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# %c see below
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('%d', '%02d' % now[2], 'day of month as number (00-31)'),
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('%H', '%02d' % now[3], 'hour (00-23)'),
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('%I', '%02d' % self.clock12, 'hour (01-12)'),
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('%j', '%03d' % now[7], 'julian day (001-366)'),
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('%m', '%02d' % now[1], 'month as number (01-12)'),
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('%M', '%02d' % now[4], 'minute, (00-59)'),
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('%p', self.ampm, 'AM or PM as appropriate'),
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('%S', '%02d' % now[5], 'seconds of current time (00-60)'),
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('%U', '%02d' % ((now[7] + self.jan1[6])//7),
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'week number of the year (Sun 1st)'),
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('%w', '0?%d' % ((1+now[6]) % 7), 'weekday as a number (Sun 1st)'),
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('%W', '%02d' % ((now[7] + (self.jan1[6] - 1)%7)//7),
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'week number of the year (Mon 1st)'),
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# %x see below
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('%X', '%02d:%02d:%02d' % (now[3], now[4], now[5]), '%H:%M:%S'),
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('%y', '%02d' % (now[0]%100), 'year without century'),
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('%Y', '%d' % now[0], 'year with century'),
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# %Z see below
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('%%', '%', 'single percent sign'),
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)
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for e in expectations:
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# mustn't raise a value error
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try:
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result = time.strftime(e[0], now)
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except ValueError as error:
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self.fail("strftime '%s' format gave error: %s" % (e[0], error))
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if re.match(escapestr(e[1], self.ampm), result):
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continue
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if not result or result[0] == '%':
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self.fail("strftime does not support standard '%s' format (%s)"
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% (e[0], e[2]))
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else:
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self.fail("Conflict for %s (%s): expected %s, but got %s"
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% (e[0], e[2], e[1], result))
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def strftest2(self, now):
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nowsecs = str(int(now))[:-1]
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now = self.now
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nonstandard_expectations = (
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# These are standard but don't have predictable output
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('%c', fixasctime(time.asctime(now)), 'near-asctime() format'),
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('%x', '%02d/%02d/%02d' % (now[1], now[2], (now[0]%100)),
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'%m/%d/%y %H:%M:%S'),
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('%Z', '%s' % self.tz, 'time zone name'),
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# These are some platform specific extensions
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('%D', '%02d/%02d/%02d' % (now[1], now[2], (now[0]%100)), 'mm/dd/yy'),
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('%e', '%2d' % now[2], 'day of month as number, blank padded ( 0-31)'),
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('%h', calendar.month_abbr[now[1]], 'abbreviated month name'),
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('%k', '%2d' % now[3], 'hour, blank padded ( 0-23)'),
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('%n', '\n', 'newline character'),
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('%r', '%02d:%02d:%02d %s' % (self.clock12, now[4], now[5], self.ampm),
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'%I:%M:%S %p'),
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('%R', '%02d:%02d' % (now[3], now[4]), '%H:%M'),
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('%s', nowsecs, 'seconds since the Epoch in UCT'),
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('%t', '\t', 'tab character'),
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('%T', '%02d:%02d:%02d' % (now[3], now[4], now[5]), '%H:%M:%S'),
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('%3y', '%03d' % (now[0]%100),
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'year without century rendered using fieldwidth'),
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)
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for e in nonstandard_expectations:
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try:
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result = time.strftime(e[0], now)
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except ValueError as result:
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msg = "Error for nonstandard '%s' format (%s): %s" % \
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(e[0], e[2], str(result))
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if support.verbose:
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print(msg)
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continue
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if re.match(escapestr(e[1], self.ampm), result):
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if support.verbose:
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print("Supports nonstandard '%s' format (%s)" % (e[0], e[2]))
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elif not result or result[0] == '%':
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if support.verbose:
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print("Does not appear to support '%s' format (%s)" % \
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(e[0], e[2]))
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else:
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if support.verbose:
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print("Conflict for nonstandard '%s' format (%s):" % \
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(e[0], e[2]))
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print(" Expected %s, but got %s" % (e[1], result))
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class Y1900Tests(unittest.TestCase):
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"""A limitation of the MS C runtime library is that it crashes if
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a date before 1900 is passed with a format string containing "%y"
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"""
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def test_y_before_1900(self):
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# Issue #13674, #19634
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t = (1899, 1, 1, 0, 0, 0, 0, 0, 0)
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if (sys.platform == "win32"
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or sys.platform.startswith(("aix", "sunos", "solaris"))):
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with self.assertRaises(ValueError):
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time.strftime("%y", t)
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else:
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self.assertEqual(time.strftime("%y", t), "99")
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def test_y_1900(self):
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self.assertEqual(
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time.strftime("%y", (1900, 1, 1, 0, 0, 0, 0, 0, 0)), "00")
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def test_y_after_1900(self):
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self.assertEqual(
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time.strftime("%y", (2013, 1, 1, 0, 0, 0, 0, 0, 0)), "13")
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if __name__ == '__main__':
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unittest.main()
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