symbian-qemu-0.9.1-12/python-2.6.1/Lib/test/test_strptime.py
changeset 1 2fb8b9db1c86
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0:ffa851df0825 1:2fb8b9db1c86
       
     1 """PyUnit testing against strptime"""
       
     2 
       
     3 import unittest
       
     4 import time
       
     5 import locale
       
     6 import re
       
     7 import sys
       
     8 from test import test_support
       
     9 from datetime import date as datetime_date
       
    10 
       
    11 import _strptime
       
    12 
       
    13 class getlang_Tests(unittest.TestCase):
       
    14     """Test _getlang"""
       
    15     def test_basic(self):
       
    16         self.failUnlessEqual(_strptime._getlang(), locale.getlocale(locale.LC_TIME))
       
    17 
       
    18 class LocaleTime_Tests(unittest.TestCase):
       
    19     """Tests for _strptime.LocaleTime.
       
    20 
       
    21     All values are lower-cased when stored in LocaleTime, so make sure to
       
    22     compare values after running ``lower`` on them.
       
    23 
       
    24     """
       
    25 
       
    26     def setUp(self):
       
    27         """Create time tuple based on current time."""
       
    28         self.time_tuple = time.localtime()
       
    29         self.LT_ins = _strptime.LocaleTime()
       
    30 
       
    31     def compare_against_time(self, testing, directive, tuple_position,
       
    32                              error_msg):
       
    33         """Helper method that tests testing against directive based on the
       
    34         tuple_position of time_tuple.  Uses error_msg as error message.
       
    35 
       
    36         """
       
    37         strftime_output = time.strftime(directive, self.time_tuple).lower()
       
    38         comparison = testing[self.time_tuple[tuple_position]]
       
    39         self.failUnless(strftime_output in testing, "%s: not found in tuple" %
       
    40                                                     error_msg)
       
    41         self.failUnless(comparison == strftime_output,
       
    42                         "%s: position within tuple incorrect; %s != %s" %
       
    43                         (error_msg, comparison, strftime_output))
       
    44 
       
    45     def test_weekday(self):
       
    46         # Make sure that full and abbreviated weekday names are correct in
       
    47         # both string and position with tuple
       
    48         self.compare_against_time(self.LT_ins.f_weekday, '%A', 6,
       
    49                                   "Testing of full weekday name failed")
       
    50         self.compare_against_time(self.LT_ins.a_weekday, '%a', 6,
       
    51                                   "Testing of abbreviated weekday name failed")
       
    52 
       
    53     def test_month(self):
       
    54         # Test full and abbreviated month names; both string and position
       
    55         # within the tuple
       
    56         self.compare_against_time(self.LT_ins.f_month, '%B', 1,
       
    57                                   "Testing against full month name failed")
       
    58         self.compare_against_time(self.LT_ins.a_month, '%b', 1,
       
    59                                   "Testing against abbreviated month name failed")
       
    60 
       
    61     def test_am_pm(self):
       
    62         # Make sure AM/PM representation done properly
       
    63         strftime_output = time.strftime("%p", self.time_tuple).lower()
       
    64         self.failUnless(strftime_output in self.LT_ins.am_pm,
       
    65                         "AM/PM representation not in tuple")
       
    66         if self.time_tuple[3] < 12: position = 0
       
    67         else: position = 1
       
    68         self.failUnless(strftime_output == self.LT_ins.am_pm[position],
       
    69                         "AM/PM representation in the wrong position within the tuple")
       
    70 
       
    71     def test_timezone(self):
       
    72         # Make sure timezone is correct
       
    73         timezone = time.strftime("%Z", self.time_tuple).lower()
       
    74         if timezone:
       
    75             self.failUnless(timezone in self.LT_ins.timezone[0] or \
       
    76                             timezone in self.LT_ins.timezone[1],
       
    77                             "timezone %s not found in %s" %
       
    78                             (timezone, self.LT_ins.timezone))
       
    79 
       
    80     def test_date_time(self):
       
    81         # Check that LC_date_time, LC_date, and LC_time are correct
       
    82         # the magic date is used so as to not have issues with %c when day of
       
    83         #  the month is a single digit and has a leading space.  This is not an
       
    84         #  issue since strptime still parses it correctly.  The problem is
       
    85         #  testing these directives for correctness by comparing strftime
       
    86         #  output.
       
    87         magic_date = (1999, 3, 17, 22, 44, 55, 2, 76, 0)
       
    88         strftime_output = time.strftime("%c", magic_date)
       
    89         self.failUnless(strftime_output == time.strftime(self.LT_ins.LC_date_time,
       
    90                                                          magic_date),
       
    91                         "LC_date_time incorrect")
       
    92         strftime_output = time.strftime("%x", magic_date)
       
    93         self.failUnless(strftime_output == time.strftime(self.LT_ins.LC_date,
       
    94                                                          magic_date),
       
    95                         "LC_date incorrect")
       
    96         strftime_output = time.strftime("%X", magic_date)
       
    97         self.failUnless(strftime_output == time.strftime(self.LT_ins.LC_time,
       
    98                                                          magic_date),
       
    99                         "LC_time incorrect")
       
   100         LT = _strptime.LocaleTime()
       
   101         LT.am_pm = ('', '')
       
   102         self.failUnless(LT.LC_time, "LocaleTime's LC directives cannot handle "
       
   103                                     "empty strings")
       
   104 
       
   105     def test_lang(self):
       
   106         # Make sure lang is set to what _getlang() returns
       
   107         # Assuming locale has not changed between now and when self.LT_ins was created
       
   108         self.failUnlessEqual(self.LT_ins.lang, _strptime._getlang())
       
   109 
       
   110 
       
   111 class TimeRETests(unittest.TestCase):
       
   112     """Tests for TimeRE."""
       
   113 
       
   114     def setUp(self):
       
   115         """Construct generic TimeRE object."""
       
   116         self.time_re = _strptime.TimeRE()
       
   117         self.locale_time = _strptime.LocaleTime()
       
   118 
       
   119     def test_pattern(self):
       
   120         # Test TimeRE.pattern
       
   121         pattern_string = self.time_re.pattern(r"%a %A %d")
       
   122         self.failUnless(pattern_string.find(self.locale_time.a_weekday[2]) != -1,
       
   123                         "did not find abbreviated weekday in pattern string '%s'" %
       
   124                          pattern_string)
       
   125         self.failUnless(pattern_string.find(self.locale_time.f_weekday[4]) != -1,
       
   126                         "did not find full weekday in pattern string '%s'" %
       
   127                          pattern_string)
       
   128         self.failUnless(pattern_string.find(self.time_re['d']) != -1,
       
   129                         "did not find 'd' directive pattern string '%s'" %
       
   130                          pattern_string)
       
   131 
       
   132     def test_pattern_escaping(self):
       
   133         # Make sure any characters in the format string that might be taken as
       
   134         # regex syntax is escaped.
       
   135         pattern_string = self.time_re.pattern("\d+")
       
   136         self.failUnless(r"\\d\+" in pattern_string,
       
   137                         "%s does not have re characters escaped properly" %
       
   138                         pattern_string)
       
   139 
       
   140     def test_compile(self):
       
   141         # Check that compiled regex is correct
       
   142         found = self.time_re.compile(r"%A").match(self.locale_time.f_weekday[6])
       
   143         self.failUnless(found and found.group('A') == self.locale_time.f_weekday[6],
       
   144                         "re object for '%A' failed")
       
   145         compiled = self.time_re.compile(r"%a %b")
       
   146         found = compiled.match("%s %s" % (self.locale_time.a_weekday[4],
       
   147                                self.locale_time.a_month[4]))
       
   148         self.failUnless(found,
       
   149             "Match failed with '%s' regex and '%s' string" %
       
   150              (compiled.pattern, "%s %s" % (self.locale_time.a_weekday[4],
       
   151                                            self.locale_time.a_month[4])))
       
   152         self.failUnless(found.group('a') == self.locale_time.a_weekday[4] and
       
   153                          found.group('b') == self.locale_time.a_month[4],
       
   154                         "re object couldn't find the abbreviated weekday month in "
       
   155                          "'%s' using '%s'; group 'a' = '%s', group 'b' = %s'" %
       
   156                          (found.string, found.re.pattern, found.group('a'),
       
   157                           found.group('b')))
       
   158         for directive in ('a','A','b','B','c','d','H','I','j','m','M','p','S',
       
   159                           'U','w','W','x','X','y','Y','Z','%'):
       
   160             compiled = self.time_re.compile("%" + directive)
       
   161             found = compiled.match(time.strftime("%" + directive))
       
   162             self.failUnless(found, "Matching failed on '%s' using '%s' regex" %
       
   163                                     (time.strftime("%" + directive),
       
   164                                      compiled.pattern))
       
   165 
       
   166     def test_blankpattern(self):
       
   167         # Make sure when tuple or something has no values no regex is generated.
       
   168         # Fixes bug #661354
       
   169         test_locale = _strptime.LocaleTime()
       
   170         test_locale.timezone = (frozenset(), frozenset())
       
   171         self.failUnless(_strptime.TimeRE(test_locale).pattern("%Z") == '',
       
   172                         "with timezone == ('',''), TimeRE().pattern('%Z') != ''")
       
   173 
       
   174     def test_matching_with_escapes(self):
       
   175         # Make sure a format that requires escaping of characters works
       
   176         compiled_re = self.time_re.compile("\w+ %m")
       
   177         found = compiled_re.match("\w+ 10")
       
   178         self.failUnless(found, "Escaping failed of format '\w+ 10'")
       
   179 
       
   180     def test_locale_data_w_regex_metacharacters(self):
       
   181         # Check that if locale data contains regex metacharacters they are
       
   182         # escaped properly.
       
   183         # Discovered by bug #1039270 .
       
   184         locale_time = _strptime.LocaleTime()
       
   185         locale_time.timezone = (frozenset(("utc", "gmt",
       
   186                                             "Tokyo (standard time)")),
       
   187                                 frozenset("Tokyo (daylight time)"))
       
   188         time_re = _strptime.TimeRE(locale_time)
       
   189         self.failUnless(time_re.compile("%Z").match("Tokyo (standard time)"),
       
   190                         "locale data that contains regex metacharacters is not"
       
   191                         " properly escaped")
       
   192 
       
   193     def test_whitespace_substitution(self):
       
   194         # When pattern contains whitespace, make sure it is taken into account
       
   195         # so as to not allow to subpatterns to end up next to each other and
       
   196         # "steal" characters from each other.
       
   197         pattern = self.time_re.pattern('%j %H')
       
   198         self.failUnless(not re.match(pattern, "180"))
       
   199         self.failUnless(re.match(pattern, "18 0"))
       
   200 
       
   201 
       
   202 class StrptimeTests(unittest.TestCase):
       
   203     """Tests for _strptime.strptime."""
       
   204 
       
   205     def setUp(self):
       
   206         """Create testing time tuple."""
       
   207         self.time_tuple = time.gmtime()
       
   208 
       
   209     def test_ValueError(self):
       
   210         # Make sure ValueError is raised when match fails or format is bad
       
   211         self.assertRaises(ValueError, _strptime._strptime_time, data_string="%d",
       
   212                           format="%A")
       
   213         for bad_format in ("%", "% ", "%e"):
       
   214             try:
       
   215                 _strptime._strptime_time("2005", bad_format)
       
   216             except ValueError:
       
   217                 continue
       
   218             except Exception, err:
       
   219                 self.fail("'%s' raised %s, not ValueError" %
       
   220                             (bad_format, err.__class__.__name__))
       
   221             else:
       
   222                 self.fail("'%s' did not raise ValueError" % bad_format)
       
   223 
       
   224     def test_unconverteddata(self):
       
   225         # Check ValueError is raised when there is unconverted data
       
   226         self.assertRaises(ValueError, _strptime._strptime_time, "10 12", "%m")
       
   227 
       
   228     def helper(self, directive, position):
       
   229         """Helper fxn in testing."""
       
   230         strf_output = time.strftime("%" + directive, self.time_tuple)
       
   231         strp_output = _strptime._strptime_time(strf_output, "%" + directive)
       
   232         self.failUnless(strp_output[position] == self.time_tuple[position],
       
   233                         "testing of '%s' directive failed; '%s' -> %s != %s" %
       
   234                          (directive, strf_output, strp_output[position],
       
   235                           self.time_tuple[position]))
       
   236 
       
   237     def test_year(self):
       
   238         # Test that the year is handled properly
       
   239         for directive in ('y', 'Y'):
       
   240             self.helper(directive, 0)
       
   241         # Must also make sure %y values are correct for bounds set by Open Group
       
   242         for century, bounds in ((1900, ('69', '99')), (2000, ('00', '68'))):
       
   243             for bound in bounds:
       
   244                 strp_output = _strptime._strptime_time(bound, '%y')
       
   245                 expected_result = century + int(bound)
       
   246                 self.failUnless(strp_output[0] == expected_result,
       
   247                                 "'y' test failed; passed in '%s' "
       
   248                                 "and returned '%s'" % (bound, strp_output[0]))
       
   249 
       
   250     def test_month(self):
       
   251         # Test for month directives
       
   252         for directive in ('B', 'b', 'm'):
       
   253             self.helper(directive, 1)
       
   254 
       
   255     def test_day(self):
       
   256         # Test for day directives
       
   257         self.helper('d', 2)
       
   258 
       
   259     def test_hour(self):
       
   260         # Test hour directives
       
   261         self.helper('H', 3)
       
   262         strf_output = time.strftime("%I %p", self.time_tuple)
       
   263         strp_output = _strptime._strptime_time(strf_output, "%I %p")
       
   264         self.failUnless(strp_output[3] == self.time_tuple[3],
       
   265                         "testing of '%%I %%p' directive failed; '%s' -> %s != %s" %
       
   266                          (strf_output, strp_output[3], self.time_tuple[3]))
       
   267 
       
   268     def test_minute(self):
       
   269         # Test minute directives
       
   270         self.helper('M', 4)
       
   271 
       
   272     def test_second(self):
       
   273         # Test second directives
       
   274         self.helper('S', 5)
       
   275 
       
   276     def test_fraction(self):
       
   277         import datetime
       
   278         now = datetime.datetime.now()
       
   279         tup, frac = _strptime._strptime(str(now), format="%Y-%m-%d %H:%M:%S.%f")
       
   280         self.assertEqual(frac, now.microsecond)
       
   281 
       
   282     def test_weekday(self):
       
   283         # Test weekday directives
       
   284         for directive in ('A', 'a', 'w'):
       
   285             self.helper(directive,6)
       
   286 
       
   287     def test_julian(self):
       
   288         # Test julian directives
       
   289         self.helper('j', 7)
       
   290 
       
   291     def test_timezone(self):
       
   292         # Test timezone directives.
       
   293         # When gmtime() is used with %Z, entire result of strftime() is empty.
       
   294         # Check for equal timezone names deals with bad locale info when this
       
   295         # occurs; first found in FreeBSD 4.4.
       
   296         strp_output = _strptime._strptime_time("UTC", "%Z")
       
   297         self.failUnlessEqual(strp_output.tm_isdst, 0)
       
   298         strp_output = _strptime._strptime_time("GMT", "%Z")
       
   299         self.failUnlessEqual(strp_output.tm_isdst, 0)
       
   300         if sys.platform == "mac":
       
   301             # Timezones don't really work on MacOS9
       
   302             return
       
   303         time_tuple = time.localtime()
       
   304         strf_output = time.strftime("%Z")  #UTC does not have a timezone
       
   305         strp_output = _strptime._strptime_time(strf_output, "%Z")
       
   306         locale_time = _strptime.LocaleTime()
       
   307         if time.tzname[0] != time.tzname[1] or not time.daylight:
       
   308             self.failUnless(strp_output[8] == time_tuple[8],
       
   309                             "timezone check failed; '%s' -> %s != %s" %
       
   310                              (strf_output, strp_output[8], time_tuple[8]))
       
   311         else:
       
   312             self.failUnless(strp_output[8] == -1,
       
   313                             "LocaleTime().timezone has duplicate values and "
       
   314                              "time.daylight but timezone value not set to -1")
       
   315 
       
   316     def test_bad_timezone(self):
       
   317         # Explicitly test possibility of bad timezone;
       
   318         # when time.tzname[0] == time.tzname[1] and time.daylight
       
   319         if sys.platform == "mac":
       
   320             return #MacOS9 has severely broken timezone support.
       
   321         tz_name = time.tzname[0]
       
   322         if tz_name.upper() in ("UTC", "GMT"):
       
   323             return
       
   324         try:
       
   325             original_tzname = time.tzname
       
   326             original_daylight = time.daylight
       
   327             time.tzname = (tz_name, tz_name)
       
   328             time.daylight = 1
       
   329             tz_value = _strptime._strptime_time(tz_name, "%Z")[8]
       
   330             self.failUnlessEqual(tz_value, -1,
       
   331                     "%s lead to a timezone value of %s instead of -1 when "
       
   332                     "time.daylight set to %s and passing in %s" %
       
   333                     (time.tzname, tz_value, time.daylight, tz_name))
       
   334         finally:
       
   335             time.tzname = original_tzname
       
   336             time.daylight = original_daylight
       
   337 
       
   338     def test_date_time(self):
       
   339         # Test %c directive
       
   340         for position in range(6):
       
   341             self.helper('c', position)
       
   342 
       
   343     def test_date(self):
       
   344         # Test %x directive
       
   345         for position in range(0,3):
       
   346             self.helper('x', position)
       
   347 
       
   348     def test_time(self):
       
   349         # Test %X directive
       
   350         for position in range(3,6):
       
   351             self.helper('X', position)
       
   352 
       
   353     def test_percent(self):
       
   354         # Make sure % signs are handled properly
       
   355         strf_output = time.strftime("%m %% %Y", self.time_tuple)
       
   356         strp_output = _strptime._strptime_time(strf_output, "%m %% %Y")
       
   357         self.failUnless(strp_output[0] == self.time_tuple[0] and
       
   358                          strp_output[1] == self.time_tuple[1],
       
   359                         "handling of percent sign failed")
       
   360 
       
   361     def test_caseinsensitive(self):
       
   362         # Should handle names case-insensitively.
       
   363         strf_output = time.strftime("%B", self.time_tuple)
       
   364         self.failUnless(_strptime._strptime_time(strf_output.upper(), "%B"),
       
   365                         "strptime does not handle ALL-CAPS names properly")
       
   366         self.failUnless(_strptime._strptime_time(strf_output.lower(), "%B"),
       
   367                         "strptime does not handle lowercase names properly")
       
   368         self.failUnless(_strptime._strptime_time(strf_output.capitalize(), "%B"),
       
   369                         "strptime does not handle capword names properly")
       
   370 
       
   371     def test_defaults(self):
       
   372         # Default return value should be (1900, 1, 1, 0, 0, 0, 0, 1, 0)
       
   373         defaults = (1900, 1, 1, 0, 0, 0, 0, 1, -1)
       
   374         strp_output = _strptime._strptime_time('1', '%m')
       
   375         self.failUnless(strp_output == defaults,
       
   376                         "Default values for strptime() are incorrect;"
       
   377                         " %s != %s" % (strp_output, defaults))
       
   378 
       
   379     def test_escaping(self):
       
   380         # Make sure all characters that have regex significance are escaped.
       
   381         # Parentheses are in a purposeful order; will cause an error of
       
   382         # unbalanced parentheses when the regex is compiled if they are not
       
   383         # escaped.
       
   384         # Test instigated by bug #796149 .
       
   385         need_escaping = ".^$*+?{}\[]|)("
       
   386         self.failUnless(_strptime._strptime_time(need_escaping, need_escaping))
       
   387 
       
   388 class Strptime12AMPMTests(unittest.TestCase):
       
   389     """Test a _strptime regression in '%I %p' at 12 noon (12 PM)"""
       
   390 
       
   391     def test_twelve_noon_midnight(self):
       
   392         eq = self.assertEqual
       
   393         eq(time.strptime('12 PM', '%I %p')[3], 12)
       
   394         eq(time.strptime('12 AM', '%I %p')[3], 0)
       
   395         eq(_strptime._strptime_time('12 PM', '%I %p')[3], 12)
       
   396         eq(_strptime._strptime_time('12 AM', '%I %p')[3], 0)
       
   397 
       
   398 
       
   399 class JulianTests(unittest.TestCase):
       
   400     """Test a _strptime regression that all julian (1-366) are accepted"""
       
   401 
       
   402     def test_all_julian_days(self):
       
   403         eq = self.assertEqual
       
   404         for i in range(1, 367):
       
   405             # use 2004, since it is a leap year, we have 366 days
       
   406             eq(_strptime._strptime_time('%d 2004' % i, '%j %Y')[7], i)
       
   407 
       
   408 class CalculationTests(unittest.TestCase):
       
   409     """Test that strptime() fills in missing info correctly"""
       
   410 
       
   411     def setUp(self):
       
   412         self.time_tuple = time.gmtime()
       
   413 
       
   414     def test_julian_calculation(self):
       
   415         # Make sure that when Julian is missing that it is calculated
       
   416         format_string = "%Y %m %d %H %M %S %w %Z"
       
   417         result = _strptime._strptime_time(time.strftime(format_string, self.time_tuple),
       
   418                                     format_string)
       
   419         self.failUnless(result.tm_yday == self.time_tuple.tm_yday,
       
   420                         "Calculation of tm_yday failed; %s != %s" %
       
   421                          (result.tm_yday, self.time_tuple.tm_yday))
       
   422 
       
   423     def test_gregorian_calculation(self):
       
   424         # Test that Gregorian date can be calculated from Julian day
       
   425         format_string = "%Y %H %M %S %w %j %Z"
       
   426         result = _strptime._strptime_time(time.strftime(format_string, self.time_tuple),
       
   427                                     format_string)
       
   428         self.failUnless(result.tm_year == self.time_tuple.tm_year and
       
   429                          result.tm_mon == self.time_tuple.tm_mon and
       
   430                          result.tm_mday == self.time_tuple.tm_mday,
       
   431                         "Calculation of Gregorian date failed;"
       
   432                          "%s-%s-%s != %s-%s-%s" %
       
   433                          (result.tm_year, result.tm_mon, result.tm_mday,
       
   434                           self.time_tuple.tm_year, self.time_tuple.tm_mon,
       
   435                           self.time_tuple.tm_mday))
       
   436 
       
   437     def test_day_of_week_calculation(self):
       
   438         # Test that the day of the week is calculated as needed
       
   439         format_string = "%Y %m %d %H %S %j %Z"
       
   440         result = _strptime._strptime_time(time.strftime(format_string, self.time_tuple),
       
   441                                     format_string)
       
   442         self.failUnless(result.tm_wday == self.time_tuple.tm_wday,
       
   443                         "Calculation of day of the week failed;"
       
   444                          "%s != %s" % (result.tm_wday, self.time_tuple.tm_wday))
       
   445 
       
   446     def test_week_of_year_and_day_of_week_calculation(self):
       
   447         # Should be able to infer date if given year, week of year (%U or %W)
       
   448         # and day of the week
       
   449         def test_helper(ymd_tuple, test_reason):
       
   450             for directive in ('W', 'U'):
       
   451                 format_string = "%%Y %%%s %%w" % directive
       
   452                 dt_date = datetime_date(*ymd_tuple)
       
   453                 strp_input = dt_date.strftime(format_string)
       
   454                 strp_output = _strptime._strptime_time(strp_input, format_string)
       
   455                 self.failUnless(strp_output[:3] == ymd_tuple,
       
   456                         "%s(%s) test failed w/ '%s': %s != %s (%s != %s)" %
       
   457                             (test_reason, directive, strp_input,
       
   458                                 strp_output[:3], ymd_tuple,
       
   459                                 strp_output[7], dt_date.timetuple()[7]))
       
   460         test_helper((1901, 1, 3), "week 0")
       
   461         test_helper((1901, 1, 8), "common case")
       
   462         test_helper((1901, 1, 13), "day on Sunday")
       
   463         test_helper((1901, 1, 14), "day on Monday")
       
   464         test_helper((1905, 1, 1), "Jan 1 on Sunday")
       
   465         test_helper((1906, 1, 1), "Jan 1 on Monday")
       
   466         test_helper((1906, 1, 7), "first Sunday in a year starting on Monday")
       
   467         test_helper((1905, 12, 31), "Dec 31 on Sunday")
       
   468         test_helper((1906, 12, 31), "Dec 31 on Monday")
       
   469         test_helper((2008, 12, 29), "Monday in the last week of the year")
       
   470         test_helper((2008, 12, 22), "Monday in the second-to-last week of the "
       
   471                                     "year")
       
   472         test_helper((1978, 10, 23), "randomly chosen date")
       
   473         test_helper((2004, 12, 18), "randomly chosen date")
       
   474         test_helper((1978, 10, 23), "year starting and ending on Monday while "
       
   475                                         "date not on Sunday or Monday")
       
   476         test_helper((1917, 12, 17), "year starting and ending on Monday with "
       
   477                                         "a Monday not at the beginning or end "
       
   478                                         "of the year")
       
   479         test_helper((1917, 12, 31), "Dec 31 on Monday with year starting and "
       
   480                                         "ending on Monday")
       
   481         test_helper((2007, 01, 07), "First Sunday of 2007")
       
   482         test_helper((2007, 01, 14), "Second Sunday of 2007")
       
   483         test_helper((2006, 12, 31), "Last Sunday of 2006")
       
   484         test_helper((2006, 12, 24), "Second to last Sunday of 2006")
       
   485 
       
   486 
       
   487 class CacheTests(unittest.TestCase):
       
   488     """Test that caching works properly."""
       
   489 
       
   490     def test_time_re_recreation(self):
       
   491         # Make sure cache is recreated when current locale does not match what
       
   492         # cached object was created with.
       
   493         _strptime._strptime_time("10", "%d")
       
   494         _strptime._strptime_time("2005", "%Y")
       
   495         _strptime._TimeRE_cache.locale_time.lang = "Ni"
       
   496         original_time_re = id(_strptime._TimeRE_cache)
       
   497         _strptime._strptime_time("10", "%d")
       
   498         self.failIfEqual(original_time_re, id(_strptime._TimeRE_cache))
       
   499         self.failUnlessEqual(len(_strptime._regex_cache), 1)
       
   500 
       
   501     def test_regex_cleanup(self):
       
   502         # Make sure cached regexes are discarded when cache becomes "full".
       
   503         try:
       
   504             del _strptime._regex_cache['%d']
       
   505         except KeyError:
       
   506             pass
       
   507         bogus_key = 0
       
   508         while len(_strptime._regex_cache) <= _strptime._CACHE_MAX_SIZE:
       
   509             _strptime._regex_cache[bogus_key] = None
       
   510             bogus_key += 1
       
   511         _strptime._strptime_time("10", "%d")
       
   512         self.failUnlessEqual(len(_strptime._regex_cache), 1)
       
   513 
       
   514     def test_new_localetime(self):
       
   515         # A new LocaleTime instance should be created when a new TimeRE object
       
   516         # is created.
       
   517         locale_time_id = id(_strptime._TimeRE_cache.locale_time)
       
   518         _strptime._TimeRE_cache.locale_time.lang = "Ni"
       
   519         _strptime._strptime_time("10", "%d")
       
   520         self.failIfEqual(locale_time_id,
       
   521                          id(_strptime._TimeRE_cache.locale_time))
       
   522 
       
   523     def test_TimeRE_recreation(self):
       
   524         # The TimeRE instance should be recreated upon changing the locale.
       
   525         locale_info = locale.getlocale(locale.LC_TIME)
       
   526         try:
       
   527             locale.setlocale(locale.LC_TIME, ('en_US', 'UTF8'))
       
   528         except locale.Error:
       
   529             return
       
   530         try:
       
   531             _strptime._strptime_time('10', '%d')
       
   532             # Get id of current cache object.
       
   533             first_time_re_id = id(_strptime._TimeRE_cache)
       
   534             try:
       
   535                 # Change the locale and force a recreation of the cache.
       
   536                 locale.setlocale(locale.LC_TIME, ('de_DE', 'UTF8'))
       
   537                 _strptime._strptime_time('10', '%d')
       
   538                 # Get the new cache object's id.
       
   539                 second_time_re_id = id(_strptime._TimeRE_cache)
       
   540                 # They should not be equal.
       
   541                 self.failIfEqual(first_time_re_id, second_time_re_id)
       
   542             # Possible test locale is not supported while initial locale is.
       
   543             # If this is the case just suppress the exception and fall-through
       
   544             # to the reseting to the original locale.
       
   545             except locale.Error:
       
   546                 pass
       
   547         # Make sure we don't trample on the locale setting once we leave the
       
   548         # test.
       
   549         finally:
       
   550             locale.setlocale(locale.LC_TIME, locale_info)
       
   551 
       
   552 
       
   553 def test_main():
       
   554     test_support.run_unittest(
       
   555         getlang_Tests,
       
   556         LocaleTime_Tests,
       
   557         TimeRETests,
       
   558         StrptimeTests,
       
   559         Strptime12AMPMTests,
       
   560         JulianTests,
       
   561         CalculationTests,
       
   562         CacheTests
       
   563     )
       
   564 
       
   565 
       
   566 if __name__ == '__main__':
       
   567     test_main()