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      1 """
      2 Unittest for time.strftime
      3 """
      4 
      5 import calendar
      6 import sys
      7 import re
      8 from test import test_support
      9 import time
     10 import unittest
     11 
     12 
     13 # helper functions
     14 def fixasctime(s):
     15     if s[8] == ' ':
     16         s = s[:8] + '0' + s[9:]
     17     return s
     18 
     19 def escapestr(text, ampm):
     20     """
     21     Escape text to deal with possible locale values that have regex
     22     syntax while allowing regex syntax used for comparison.
     23     """
     24     new_text = re.escape(text)
     25     new_text = new_text.replace(re.escape(ampm), ampm)
     26     new_text = new_text.replace('\%', '%')
     27     new_text = new_text.replace('\:', ':')
     28     new_text = new_text.replace('\?', '?')
     29     return new_text
     30 
     31 class StrftimeTest(unittest.TestCase):
     32 
     33     def __init__(self, *k, **kw):
     34         unittest.TestCase.__init__(self, *k, **kw)
     35 
     36     def _update_variables(self, now):
     37         # we must update the local variables on every cycle
     38         self.gmt = time.gmtime(now)
     39         now = time.localtime(now)
     40 
     41         if now[3] < 12: self.ampm='(AM|am)'
     42         else: self.ampm='(PM|pm)'
     43 
     44         self.jan1 = time.localtime(time.mktime((now[0], 1, 1, 0, 0, 0, 0, 1, 0)))
     45 
     46         try:
     47             if now[8]: self.tz = time.tzname[1]
     48             else: self.tz = time.tzname[0]
     49         except AttributeError:
     50             self.tz = ''
     51 
     52         if now[3] > 12: self.clock12 = now[3] - 12
     53         elif now[3] > 0: self.clock12 = now[3]
     54         else: self.clock12 = 12
     55 
     56         self.now = now
     57 
     58     def setUp(self):
     59         try:
     60             import java
     61             java.util.Locale.setDefault(java.util.Locale.US)
     62         except ImportError:
     63             import locale
     64             locale.setlocale(locale.LC_TIME, 'C')
     65 
     66     def test_strftime(self):
     67         now = time.time()
     68         self._update_variables(now)
     69         self.strftest1(now)
     70         self.strftest2(now)
     71 
     72         if test_support.verbose:
     73             print "Strftime test, platform: %s, Python version: %s" % \
     74                   (sys.platform, sys.version.split()[0])
     75 
     76         for j in range(-5, 5):
     77             for i in range(25):
     78                 arg = now + (i+j*100)*23*3603
     79                 self._update_variables(arg)
     80                 self.strftest1(arg)
     81                 self.strftest2(arg)
     82 
     83     def strftest1(self, now):
     84         if test_support.verbose:
     85             print "strftime test for", time.ctime(now)
     86         now = self.now
     87         # Make sure any characters that could be taken as regex syntax is
     88         # escaped in escapestr()
     89         expectations = (
     90             ('%a', calendar.day_abbr[now[6]], 'abbreviated weekday name'),
     91             ('%A', calendar.day_name[now[6]], 'full weekday name'),
     92             ('%b', calendar.month_abbr[now[1]], 'abbreviated month name'),
     93             ('%B', calendar.month_name[now[1]], 'full month name'),
     94             # %c see below
     95             ('%d', '%02d' % now[2], 'day of month as number (00-31)'),
     96             ('%H', '%02d' % now[3], 'hour (00-23)'),
     97             ('%I', '%02d' % self.clock12, 'hour (01-12)'),
     98             ('%j', '%03d' % now[7], 'julian day (001-366)'),
     99             ('%m', '%02d' % now[1], 'month as number (01-12)'),
    100             ('%M', '%02d' % now[4], 'minute, (00-59)'),
    101             ('%p', self.ampm, 'AM or PM as appropriate'),
    102             ('%S', '%02d' % now[5], 'seconds of current time (00-60)'),
    103             ('%U', '%02d' % ((now[7] + self.jan1[6])//7),
    104              'week number of the year (Sun 1st)'),
    105             ('%w', '0?%d' % ((1+now[6]) % 7), 'weekday as a number (Sun 1st)'),
    106             ('%W', '%02d' % ((now[7] + (self.jan1[6] - 1)%7)//7),
    107             'week number of the year (Mon 1st)'),
    108             # %x see below
    109             ('%X', '%02d:%02d:%02d' % (now[3], now[4], now[5]), '%H:%M:%S'),
    110             ('%y', '%02d' % (now[0]%100), 'year without century'),
    111             ('%Y', '%d' % now[0], 'year with century'),
    112             # %Z see below
    113             ('%%', '%', 'single percent sign'),
    114         )
    115 
    116         for e in expectations:
    117             # musn't raise a value error
    118             try:
    119                 result = time.strftime(e[0], now)
    120             except ValueError, error:
    121                 self.fail("strftime '%s' format gave error: %s" % (e[0], error))
    122             if re.match(escapestr(e[1], self.ampm), result):
    123                 continue
    124             if not result or result[0] == '%':
    125                 self.fail("strftime does not support standard '%s' format (%s)"
    126                           % (e[0], e[2]))
    127             else:
    128                 self.fail("Conflict for %s (%s): expected %s, but got %s"
    129                           % (e[0], e[2], e[1], result))
    130 
    131     def strftest2(self, now):
    132         nowsecs = str(long(now))[:-1]
    133         now = self.now
    134 
    135         nonstandard_expectations = (
    136         # These are standard but don't have predictable output
    137             ('%c', fixasctime(time.asctime(now)), 'near-asctime() format'),
    138             ('%x', '%02d/%02d/%02d' % (now[1], now[2], (now[0]%100)),
    139             '%m/%d/%y %H:%M:%S'),
    140             ('%Z', '%s' % self.tz, 'time zone name'),
    141 
    142             # These are some platform specific extensions
    143             ('%D', '%02d/%02d/%02d' % (now[1], now[2], (now[0]%100)), 'mm/dd/yy'),
    144             ('%e', '%2d' % now[2], 'day of month as number, blank padded ( 0-31)'),
    145             ('%h', calendar.month_abbr[now[1]], 'abbreviated month name'),
    146             ('%k', '%2d' % now[3], 'hour, blank padded ( 0-23)'),
    147             ('%n', '\n', 'newline character'),
    148             ('%r', '%02d:%02d:%02d %s' % (self.clock12, now[4], now[5], self.ampm),
    149             '%I:%M:%S %p'),
    150             ('%R', '%02d:%02d' % (now[3], now[4]), '%H:%M'),
    151             ('%s', nowsecs, 'seconds since the Epoch in UCT'),
    152             ('%t', '\t', 'tab character'),
    153             ('%T', '%02d:%02d:%02d' % (now[3], now[4], now[5]), '%H:%M:%S'),
    154             ('%3y', '%03d' % (now[0]%100),
    155             'year without century rendered using fieldwidth'),
    156         )
    157 
    158         for e in nonstandard_expectations:
    159             try:
    160                 result = time.strftime(e[0], now)
    161             except ValueError, result:
    162                 msg = "Error for nonstandard '%s' format (%s): %s" % \
    163                       (e[0], e[2], str(result))
    164                 if test_support.verbose:
    165                     print msg
    166                 continue
    167 
    168             if re.match(escapestr(e[1], self.ampm), result):
    169                 if test_support.verbose:
    170                     print "Supports nonstandard '%s' format (%s)" % (e[0], e[2])
    171             elif not result or result[0] == '%':
    172                 if test_support.verbose:
    173                     print "Does not appear to support '%s' format (%s)" % \
    174                            (e[0], e[2])
    175             else:
    176                 if test_support.verbose:
    177                     print "Conflict for nonstandard '%s' format (%s):" % \
    178                            (e[0], e[2])
    179                     print "  Expected %s, but got %s" % (e[1], result)
    180 
    181 def test_main():
    182     test_support.run_unittest(StrftimeTest)
    183 
    184 if __name__ == '__main__':
    185     test_main()
    186