cpython/Lib/test/test_strftime.py

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#! /usr/bin/env python
# Sanity checker for time.strftime
import time, calendar, sys, string, os
from test_support import verbose
if verbose:
now = time.time()
fp = os.popen('date')
fromdate = string.strip(fp.readline())
fp.close()
else:
now = 850499890.282 # time.time()
fromdate = 'Fri Dec 13 12:58:10 EST 1996' # os.popen('date')
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nowsecs = int(now)
gmt = time.gmtime(now)
now = time.localtime(now)
if gmt[3] < 12: ampm='AM'
else: ampm='PM'
jan1 = time.localtime(time.mktime((now[0], 1, 1) + (0,)*6))
wk1offset = jan1[6] - 6
if now[8]: tz = time.tzname[1]
else: tz = time.tzname[0]
if now[3] > 12: clock12 = now[3] - 12
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else: clock12 = now[3]
# descriptions are a mixture of those from the BSD/OS v2.0 man page
# (known to be incorrect in some instances) and the documentation for
# Python's time module
expectations = (
('%A', calendar.day_name[now[6]], 'full weekday name'),
('%a', calendar.day_abbr[now[6]], 'abbreviated weekday name'),
('%B', calendar.month_name[now[1]], 'full month name'),
('%b', calendar.month_abbr[now[1]], 'abbreviated month name'),
('%h', calendar.month_abbr[now[1]], 'abbreviated month name'),
('%c', time.asctime(now), 'asctime() format'),
('%D', '%02d/%02d/%02d' % (now[1], now[2], (now[0]%100)), 'mm/dd/yy'),
('%d', '%02d' % now[2], 'day of month as number (00-31)'),
('%e', '%2d' % now[2], 'day of month as number, blank padded ( 0-31)'),
('%H', '%02d' % now[3], 'hour (00-23)'),
('%I', '%02d' % clock12, 'hour (01-12)'),
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('%j', '%03d' % now[7], 'julian day (001-366)'),
('%M', '%02d' % now[4], 'minute, (00-59)'),
('%m', '%02d' % now[1], 'month as number (01-12)'),
('%n', '\n', 'newline character'),
('%p', ampm, 'AM or PM as appropriate'),
('%R', '%02d:%02d' % (now[3], now[4]), '%H:%M'),
('%r', '%02d:%02d:%02d %s' % (clock12, now[4], now[5], ampm),
'%I:%M:%S %p'),
('%t', '\t', 'tab character'),
('%S', '%02d' % now[5], 'seconds of current time (00-60)'),
('%T', '%02d:%02d:%02d' % (now[3], now[4], now[5]), '%H:%M:%S'),
('%X', '%02d:%02d:%02d' % (now[3], now[4], now[5]), '%H:%M:%S'),
('%U', '%02d' % (1+(wk1offset+now[7])/7),
'week number of the year (Sun 1st)'),
('%W', '%02d' % (1+now[7]/7), 'week number of the year (Mon 1st)'),
('%w', '%d' % (1+now[6]), 'weekday as a number (Sun 1st)'),
('%x', '%02d/%02d/%02d' % (now[1], now[2], (now[0]%100)),
'%m/%d/%y %H:%M:%S'),
('%Y', '%d' % now[0], 'year with century'),
('%y', '%02d' % (now[0]%100), 'year without century'),
('%Z', tz, 'time zone name'),
('%%', '%', 'single percent sign'),
)
nonstandard_expectations = (
('%C', fromdate, 'date(1) format'),
('%k', '%2d' % now[3], 'hour, blank padded ( 0-23)'),
('%s', '%d' % nowsecs, 'seconds since the Epoch in UCT'),
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('%3y', '%03d' % (now[0]%100),
'year without century rendered using fieldwidth'),
('%n', '\n', 'newline character'),
('%t', '\t', 'tab character'),
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)
if verbose:
print "Strftime test, platform: %s, Python version: %s" % \
(sys.platform, string.split(sys.version)[0])
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for e in expectations:
result = time.strftime(e[0], now)
if result == e[1]: continue
if result[0] == '%':
print "Does not support standard '%s' format (%s)" % (e[0], e[2])
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else:
print "Conflict for %s (%s):" % (e[0], e[2])
print " Expected %s, but got %s" % (e[1], result)
for e in nonstandard_expectations:
result = time.strftime(e[0], now)
if result == e[1]:
if verbose:
print "Supports nonstandard '%s' format (%s)" % (e[0], e[2])
elif result[0] == '%':
if verbose:
print "Does not appear to support '%s' format" % e[0]
else:
if verbose:
print "Conflict for %s (%s):" % (e[0], e[2])
print " Expected %s, but got %s" % (e[1], result)