Python _strptime._strptime_time() Examples

def test_bad_timezone(self):
        # Explicitly test possibility of bad timezone;
        # when time.tzname[0] == time.tzname[1] and time.daylight
        tz_name = time.tzname[0]
        if tz_name.upper() in ("UTC", "GMT"):
            self.skipTest('need non-UTC/GMT timezone')
        try:
            original_tzname = time.tzname
            original_daylight = time.daylight
            time.tzname = (tz_name, tz_name)
            time.daylight = 1
            tz_value = _strptime._strptime_time(tz_name, "%Z")[8]
            self.assertEqual(tz_value, -1,
                    "%s lead to a timezone value of %s instead of -1 when "
                    "time.daylight set to %s and passing in %s" %
                    (time.tzname, tz_value, time.daylight, tz_name))
        finally:
            time.tzname = original_tzname
            time.daylight = original_daylight 

def test_TimeRE_recreation_timezone(self):
        # The TimeRE instance should be recreated upon changing the timezone.
        oldtzname = time.tzname
        tm = _strptime._strptime_time(time.tzname[0], '%Z')
        self.assertEqual(tm.tm_isdst, 0)
        tm = _strptime._strptime_time(time.tzname[1], '%Z')
        self.assertEqual(tm.tm_isdst, 1)
        # Get id of current cache object.
        first_time_re = _strptime._TimeRE_cache
        # Change the timezone and force a recreation of the cache.
        os.environ['TZ'] = 'EST+05EDT,M3.2.0,M11.1.0'
        time.tzset()
        tm = _strptime._strptime_time(time.tzname[0], '%Z')
        self.assertEqual(tm.tm_isdst, 0)
        tm = _strptime._strptime_time(time.tzname[1], '%Z')
        self.assertEqual(tm.tm_isdst, 1)
        # Get the new cache object's id.
        second_time_re = _strptime._TimeRE_cache
        # They should not be equal.
        self.assertIsNot(first_time_re, second_time_re)
        # Make sure old names no longer accepted.
        with self.assertRaises(ValueError):
            _strptime._strptime_time(oldtzname[0], '%Z')
        with self.assertRaises(ValueError):
            _strptime._strptime_time(oldtzname[1], '%Z') 

def test_bad_timezone(self):
        # Explicitly test possibility of bad timezone;
        # when time.tzname[0] == time.tzname[1] and time.daylight
        tz_name = time.tzname[0]
        if tz_name.upper() in ("UTC", "GMT"):
            self.skipTest('need non-UTC/GMT timezone')

        with support.swap_attr(time, 'tzname', (tz_name, tz_name)), \
             support.swap_attr(time, 'daylight', 1), \
             support.swap_attr(time, 'tzset', lambda: None):
            time.tzname = (tz_name, tz_name)
            time.daylight = 1
            tz_value = _strptime._strptime_time(tz_name, "%Z")[8]
            self.assertEqual(tz_value, -1,
                    "%s lead to a timezone value of %s instead of -1 when "
                    "time.daylight set to %s and passing in %s" %
                    (time.tzname, tz_value, time.daylight, tz_name)) 

def test_bad_timezone(self):
        # Explicitly test possibility of bad timezone;
        # when time.tzname[0] == time.tzname[1] and time.daylight
        tz_name = time.tzname[0]
        if tz_name.upper() in ("UTC", "GMT"):
            self.skipTest('need non-UTC/GMT timezone')
        try:
            original_tzname = time.tzname
            original_daylight = time.daylight
            time.tzname = (tz_name, tz_name)
            time.daylight = 1
            tz_value = _strptime._strptime_time(tz_name, "%Z")[8]
            self.assertEqual(tz_value, -1,
                    "%s lead to a timezone value of %s instead of -1 when "
                    "time.daylight set to %s and passing in %s" %
                    (time.tzname, tz_value, time.daylight, tz_name))
        finally:
            time.tzname = original_tzname
            time.daylight = original_daylight 

def test_timezone(self):
        # Test timezone directives.
        # When gmtime() is used with %Z, entire result of strftime() is empty.
        # Check for equal timezone names deals with bad locale info when this
        # occurs; first found in FreeBSD 4.4.
        strp_output = _strptime._strptime_time("UTC", "%Z")
        self.assertEqual(strp_output.tm_isdst, 0)
        strp_output = _strptime._strptime_time("GMT", "%Z")
        self.assertEqual(strp_output.tm_isdst, 0)
        time_tuple = time.localtime()
        strf_output = time.strftime("%Z")  #UTC does not have a timezone
        strp_output = _strptime._strptime_time(strf_output, "%Z")
        locale_time = _strptime.LocaleTime()
        if time.tzname[0] != time.tzname[1] or not time.daylight:
            self.assertTrue(strp_output[8] == time_tuple[8],
                            "timezone check failed; '%s' -> %s != %s" %
                             (strf_output, strp_output[8], time_tuple[8]))
        else:
            self.assertTrue(strp_output[8] == -1,
                            "LocaleTime().timezone has duplicate values and "
                             "time.daylight but timezone value not set to -1") 

def test_bad_timezone(self):
        # Explicitly test possibility of bad timezone;
        # when time.tzname[0] == time.tzname[1] and time.daylight
        tz_name = time.tzname[0]
        if tz_name.upper() in ("UTC", "GMT"):
            return
        try:
            original_tzname = time.tzname
            original_daylight = time.daylight
            time.tzname = (tz_name, tz_name)
            time.daylight = 1
            tz_value = _strptime._strptime_time(tz_name, "%Z")[8]
            self.assertEqual(tz_value, -1,
                    "%s lead to a timezone value of %s instead of -1 when "
                    "time.daylight set to %s and passing in %s" %
                    (time.tzname, tz_value, time.daylight, tz_name))
        finally:
            time.tzname = original_tzname
            time.daylight = original_daylight 

def test_week_0(self):
        def check(value, format, *expected):
            self.assertEqual(_strptime._strptime_time(value, format)[:-1], expected)
        check('2015 0 0', '%Y %U %w', 2014, 12, 28, 0, 0, 0, 6, -3)
        check('2015 0 0', '%Y %W %w', 2015, 1, 4, 0, 0, 0, 6, 4)
        check('2015 0 1', '%Y %U %w', 2014, 12, 29, 0, 0, 0, 0, -2)
        check('2015 0 1', '%Y %W %w', 2014, 12, 29, 0, 0, 0, 0, -2)
        check('2015 0 2', '%Y %U %w', 2014, 12, 30, 0, 0, 0, 1, -1)
        check('2015 0 2', '%Y %W %w', 2014, 12, 30, 0, 0, 0, 1, -1)
        check('2015 0 3', '%Y %U %w', 2014, 12, 31, 0, 0, 0, 2, 0)
        check('2015 0 3', '%Y %W %w', 2014, 12, 31, 0, 0, 0, 2, 0)
        check('2015 0 4', '%Y %U %w', 2015, 1, 1, 0, 0, 0, 3, 1)
        check('2015 0 4', '%Y %W %w', 2015, 1, 1, 0, 0, 0, 3, 1)
        check('2015 0 5', '%Y %U %w', 2015, 1, 2, 0, 0, 0, 4, 2)
        check('2015 0 5', '%Y %W %w', 2015, 1, 2, 0, 0, 0, 4, 2)
        check('2015 0 6', '%Y %U %w', 2015, 1, 3, 0, 0, 0, 5, 3)
        check('2015 0 6', '%Y %W %w', 2015, 1, 3, 0, 0, 0, 5, 3) 

def test_ValueError(self):
        # Make sure ValueError is raised when match fails or format is bad
        self.assertRaises(ValueError, _strptime._strptime_time, data_string="%d",
                          format="%A")
        for bad_format in ("%", "% ", "%e"):
            try:
                _strptime._strptime_time("2005", bad_format)
            except ValueError:
                continue
            except Exception as err:
                self.fail("'%s' raised %s, not ValueError" %
                            (bad_format, err.__class__.__name__))
            else:
                self.fail("'%s' did not raise ValueError" % bad_format) 

def test_ValueError(self):
        # Make sure ValueError is raised when match fails or format is bad
        self.assertRaises(ValueError, _strptime._strptime_time, data_string="%d",
                          format="%A")
        for bad_format in ("%", "% ", "%e"):
            try:
                _strptime._strptime_time("2005", bad_format)
            except ValueError:
                continue
            except Exception as err:
                self.fail("'%s' raised %s, not ValueError" %
                            (bad_format, err.__class__.__name__))
            else:
                self.fail("'%s' did not raise ValueError" % bad_format) 

def test_strptime_exception_context(self):
        # check that this doesn't chain exceptions needlessly (see #17572)
        with self.assertRaises(ValueError) as e:
            _strptime._strptime_time('', '%D')
        self.assertIs(e.exception.__suppress_context__, True)
        # additional check for IndexError branch (issue #19545)
        with self.assertRaises(ValueError) as e:
            _strptime._strptime_time('19', '%Y %')
        self.assertIs(e.exception.__suppress_context__, True) 

def test_unconverteddata(self):
        # Check ValueError is raised when there is unconverted data
        self.assertRaises(ValueError, _strptime._strptime_time, "10 12", "%m") 

def test_new_localetime(self):
        # A new LocaleTime instance should be created when a new TimeRE object
        # is created.
        locale_time_id = _strptime._TimeRE_cache.locale_time
        _strptime._TimeRE_cache.locale_time.lang = "Ni"
        _strptime._strptime_time("10", "%d")
        self.assertIsNot(locale_time_id, _strptime._TimeRE_cache.locale_time) 

def test_time_re_recreation(self):
        # Make sure cache is recreated when current locale does not match what
        # cached object was created with.
        _strptime._strptime_time("10", "%d")
        _strptime._strptime_time("2005", "%Y")
        _strptime._TimeRE_cache.locale_time.lang = "Ni"
        original_time_re = _strptime._TimeRE_cache
        _strptime._strptime_time("10", "%d")
        self.assertIsNot(original_time_re, _strptime._TimeRE_cache)
        self.assertEqual(len(_strptime._regex_cache), 1) 

def test_regex_cleanup(self):
        # Make sure cached regexes are discarded when cache becomes "full".
        try:
            del _strptime._regex_cache['%d']
        except KeyError:
            pass
        bogus_key = 0
        while len(_strptime._regex_cache) <= _strptime._CACHE_MAX_SIZE:
            _strptime._regex_cache[bogus_key] = None
            bogus_key += 1
        _strptime._strptime_time("10", "%d")
        self.assertEqual(len(_strptime._regex_cache), 1) 

def test_new_localetime(self):
        # A new LocaleTime instance should be created when a new TimeRE object
        # is created.
        locale_time_id = _strptime._TimeRE_cache.locale_time
        _strptime._TimeRE_cache.locale_time.lang = "Ni"
        _strptime._strptime_time("10", "%d")
        self.assertIsNot(locale_time_id, _strptime._TimeRE_cache.locale_time) 

def test_TimeRE_recreation(self):
        # The TimeRE instance should be recreated upon changing the locale.
        locale_info = locale.getlocale(locale.LC_TIME)
        try:
            locale.setlocale(locale.LC_TIME, ('en_US', 'UTF8'))
        except locale.Error:
            self.skipTest('test needs en_US.UTF8 locale')
        try:
            _strptime._strptime_time('10', '%d')
            # Get id of current cache object.
            first_time_re = _strptime._TimeRE_cache
            try:
                # Change the locale and force a recreation of the cache.
                locale.setlocale(locale.LC_TIME, ('de_DE', 'UTF8'))
                _strptime._strptime_time('10', '%d')
                # Get the new cache object's id.
                second_time_re = _strptime._TimeRE_cache
                # They should not be equal.
                self.assertIsNot(first_time_re, second_time_re)
            # Possible test locale is not supported while initial locale is.
            # If this is the case just suppress the exception and fall-through
            # to the resetting to the original locale.
            except locale.Error:
                self.skipTest('test needs de_DE.UTF8 locale')
        # Make sure we don't trample on the locale setting once we leave the
        # test.
        finally:
            locale.setlocale(locale.LC_TIME, locale_info) 

def test_unconverteddata(self):
        # Check ValueError is raised when there is unconverted data
        self.assertRaises(ValueError, _strptime._strptime_time, "10 12", "%m") 

def test_TimeRE_recreation(self):
        # The TimeRE instance should be recreated upon changing the locale.
        locale_info = locale.getlocale(locale.LC_TIME)
        try:
            locale.setlocale(locale.LC_TIME, ('en_US', 'UTF8'))
        except locale.Error:
            self.skipTest('test needs en_US.UTF8 locale')
        try:
            _strptime._strptime_time('10', '%d')
            # Get id of current cache object.
            first_time_re = _strptime._TimeRE_cache
            try:
                # Change the locale and force a recreation of the cache.
                locale.setlocale(locale.LC_TIME, ('de_DE', 'UTF8'))
                _strptime._strptime_time('10', '%d')
                # Get the new cache object's id.
                second_time_re = _strptime._TimeRE_cache
                # They should not be equal.
                self.assertIsNot(first_time_re, second_time_re)
            # Possible test locale is not supported while initial locale is.
            # If this is the case just suppress the exception and fall-through
            # to the resetting to the original locale.
            except locale.Error:
                self.skipTest('test needs de_DE.UTF8 locale')
        # Make sure we don't trample on the locale setting once we leave the
        # test.
        finally:
            locale.setlocale(locale.LC_TIME, locale_info) 

def test_hour(self):
        # Test hour directives
        self.helper('H', 3)
        strf_output = time.strftime("%I %p", self.time_tuple)
        strp_output = _strptime._strptime_time(strf_output, "%I %p")
        self.assertTrue(strp_output[3] == self.time_tuple[3],
                        "testing of '%%I %%p' directive failed; '%s' -> %s != %s" %
                         (strf_output, strp_output[3], self.time_tuple[3])) 

def test_regex_cleanup(self):
        # Make sure cached regexes are discarded when cache becomes "full".
        try:
            del _strptime._regex_cache['%d']
        except KeyError:
            pass
        bogus_key = 0
        while len(_strptime._regex_cache) <= _strptime._CACHE_MAX_SIZE:
            _strptime._regex_cache[bogus_key] = None
            bogus_key += 1
        _strptime._strptime_time("10", "%d")
        self.assertEqual(len(_strptime._regex_cache), 1) 

def test_week_of_year_and_day_of_week_calculation(self):
        # Should be able to infer date if given year, week of year (%U or %W)
        # and day of the week
        def test_helper(ymd_tuple, test_reason):
            for directive in ('W', 'U'):
                format_string = "%%Y %%%s %%w" % directive
                dt_date = datetime_date(*ymd_tuple)
                strp_input = dt_date.strftime(format_string)
                strp_output = _strptime._strptime_time(strp_input, format_string)
                self.assertTrue(strp_output[:3] == ymd_tuple,
                        "%s(%s) test failed w/ '%s': %s != %s (%s != %s)" %
                            (test_reason, directive, strp_input,
                                strp_output[:3], ymd_tuple,
                                strp_output[7], dt_date.timetuple()[7]))
        test_helper((1901, 1, 3), "week 0")
        test_helper((1901, 1, 8), "common case")
        test_helper((1901, 1, 13), "day on Sunday")
        test_helper((1901, 1, 14), "day on Monday")
        test_helper((1905, 1, 1), "Jan 1 on Sunday")
        test_helper((1906, 1, 1), "Jan 1 on Monday")
        test_helper((1906, 1, 7), "first Sunday in a year starting on Monday")
        test_helper((1905, 12, 31), "Dec 31 on Sunday")
        test_helper((1906, 12, 31), "Dec 31 on Monday")
        test_helper((2008, 12, 29), "Monday in the last week of the year")
        test_helper((2008, 12, 22), "Monday in the second-to-last week of the "
                                    "year")
        test_helper((1978, 10, 23), "randomly chosen date")
        test_helper((2004, 12, 18), "randomly chosen date")
        test_helper((1978, 10, 23), "year starting and ending on Monday while "
                                        "date not on Sunday or Monday")
        test_helper((1917, 12, 17), "year starting and ending on Monday with "
                                        "a Monday not at the beginning or end "
                                        "of the year")
        test_helper((1917, 12, 31), "Dec 31 on Monday with year starting and "
                                        "ending on Monday")
        test_helper((2007, 01, 07), "First Sunday of 2007")
        test_helper((2007, 01, 14), "Second Sunday of 2007")
        test_helper((2006, 12, 31), "Last Sunday of 2006")
        test_helper((2006, 12, 24), "Second to last Sunday of 2006") 

def test_day_of_week_calculation(self):
        # Test that the day of the week is calculated as needed
        format_string = "%Y %m %d %H %S %j %Z"
        result = _strptime._strptime_time(time.strftime(format_string, self.time_tuple),
                                    format_string)
        self.assertTrue(result.tm_wday == self.time_tuple.tm_wday,
                        "Calculation of day of the week failed;"
                         "%s != %s" % (result.tm_wday, self.time_tuple.tm_wday)) 

def test_gregorian_calculation(self):
        # Test that Gregorian date can be calculated from Julian day
        format_string = "%Y %H %M %S %w %j %Z"
        result = _strptime._strptime_time(time.strftime(format_string, self.time_tuple),
                                    format_string)
        self.assertTrue(result.tm_year == self.time_tuple.tm_year and
                         result.tm_mon == self.time_tuple.tm_mon and
                         result.tm_mday == self.time_tuple.tm_mday,
                        "Calculation of Gregorian date failed;"
                         "%s-%s-%s != %s-%s-%s" %
                         (result.tm_year, result.tm_mon, result.tm_mday,
                          self.time_tuple.tm_year, self.time_tuple.tm_mon,
                          self.time_tuple.tm_mday)) 

def test_julian_calculation(self):
        # Make sure that when Julian is missing that it is calculated
        format_string = "%Y %m %d %H %M %S %w %Z"
        result = _strptime._strptime_time(time.strftime(format_string, self.time_tuple),
                                    format_string)
        self.assertTrue(result.tm_yday == self.time_tuple.tm_yday,
                        "Calculation of tm_yday failed; %s != %s" %
                         (result.tm_yday, self.time_tuple.tm_yday)) 

def test_all_julian_days(self):
        eq = self.assertEqual
        for i in range(1, 367):
            # use 2004, since it is a leap year, we have 366 days
            eq(_strptime._strptime_time('%d 2004' % i, '%j %Y')[7], i) 

def test_escaping(self):
        # Make sure all characters that have regex significance are escaped.
        # Parentheses are in a purposeful order; will cause an error of
        # unbalanced parentheses when the regex is compiled if they are not
        # escaped.
        # Test instigated by bug #796149 .
        need_escaping = ".^$*+?{}\[]|)("
        self.assertTrue(_strptime._strptime_time(need_escaping, need_escaping)) 

def test_defaults(self):
        # Default return value should be (1900, 1, 1, 0, 0, 0, 0, 1, 0)
        defaults = (1900, 1, 1, 0, 0, 0, 0, 1, -1)
        strp_output = _strptime._strptime_time('1', '%m')
        self.assertTrue(strp_output == defaults,
                        "Default values for strptime() are incorrect;"
                        " %s != %s" % (strp_output, defaults)) 

def test_caseinsensitive(self):
        # Should handle names case-insensitively.
        strf_output = time.strftime("%B", self.time_tuple)
        self.assertTrue(_strptime._strptime_time(strf_output.upper(), "%B"),
                        "strptime does not handle ALL-CAPS names properly")
        self.assertTrue(_strptime._strptime_time(strf_output.lower(), "%B"),
                        "strptime does not handle lowercase names properly")
        self.assertTrue(_strptime._strptime_time(strf_output.capitalize(), "%B"),
                        "strptime does not handle capword names properly") 

def test_percent(self):
        # Make sure % signs are handled properly
        strf_output = time.strftime("%m %% %Y", self.time_tuple)
        strp_output = _strptime._strptime_time(strf_output, "%m %% %Y")
        self.assertTrue(strp_output[0] == self.time_tuple[0] and
                         strp_output[1] == self.time_tuple[1],
                        "handling of percent sign failed") 

def helper(self, directive, position):
        """Helper fxn in testing."""
        strf_output = time.strftime("%" + directive, self.time_tuple)
        strp_output = _strptime._strptime_time(strf_output, "%" + directive)
        self.assertTrue(strp_output[position] == self.time_tuple[position],
                        "testing of '%s' directive failed; '%s' -> %s != %s" %
                         (directive, strf_output, strp_output[position],
                          self.time_tuple[position]))