#!/usr/bin/env python
# -*- coding: utf-8 -*-
try:
    import unittest2 as unittest
except ImportError:
    import unittest

from datetime import datetime, timedelta
from functools import partial
from time import sleep

import dateutil.tz
import pytz

from croniter import (
    CroniterBadCronError,
    CroniterBadDateError,
    CroniterNotAlphaError,
    CroniterUnsupportedSyntaxError,
    croniter,
    datetime_to_timestamp,
)
from croniter.croniter import VALID_LEN_EXPRESSION
from croniter.tests import base


class CroniterTest(base.TestCase):
    def testSecondSec(self):
        base = datetime(2012, 4, 6, 13, 26, 10)
        itr = croniter("* * * * * 15,25", base)
        n = itr.get_next(datetime)
        self.assertEqual(15, n.second)
        n = itr.get_next(datetime)
        self.assertEqual(25, n.second)
        n = itr.get_next(datetime)
        self.assertEqual(15, n.second)
        self.assertEqual(27, n.minute)

    def testSecond(self):
        base = datetime(2012, 4, 6, 13, 26, 10)
        itr = croniter("*/1 * * * * *", base)
        n1 = itr.get_next(datetime)
        self.assertEqual(base.year, n1.year)
        self.assertEqual(base.month, n1.month)
        self.assertEqual(base.day, n1.day)
        self.assertEqual(base.hour, n1.hour)
        self.assertEqual(base.minute, n1.minute)
        self.assertEqual(base.second + 1, n1.second)

    def testSecondRepeat(self):
        base = datetime(2012, 4, 6, 13, 26, 36)
        itr = croniter("* * * * * */15", base)
        n1 = itr.get_next(datetime)
        n2 = itr.get_next(datetime)
        n3 = itr.get_next(datetime)
        self.assertEqual(base.year, n1.year)
        self.assertEqual(base.month, n1.month)
        self.assertEqual(base.day, n1.day)
        self.assertEqual(base.hour, n1.hour)
        self.assertEqual(base.minute, n1.minute)
        self.assertEqual(45, n1.second)
        self.assertEqual(base.year, n2.year)
        self.assertEqual(base.month, n2.month)
        self.assertEqual(base.day, n2.day)
        self.assertEqual(base.hour, n2.hour)
        self.assertEqual(base.minute + 1, n2.minute)
        self.assertEqual(0, n2.second)
        self.assertEqual(base.year, n3.year)
        self.assertEqual(base.month, n3.month)
        self.assertEqual(base.day, n3.day)
        self.assertEqual(base.hour, n3.hour)
        self.assertEqual(base.minute + 1, n3.minute)
        self.assertEqual(15, n3.second)

    def testMinute(self):
        # minute asterisk
        base = datetime(2010, 1, 23, 12, 18)
        itr = croniter("*/1 * * * *", base)
        n1 = itr.get_next(datetime)  # 19
        self.assertEqual(base.year, n1.year)
        self.assertEqual(base.month, n1.month)
        self.assertEqual(base.day, n1.day)
        self.assertEqual(base.hour, n1.hour)
        self.assertEqual(base.minute, n1.minute - 1)
        for i in range(39):  # ~ 58
            itr.get_next()
        n2 = itr.get_next(datetime)
        self.assertEqual(n2.minute, 59)
        n3 = itr.get_next(datetime)
        self.assertEqual(n3.minute, 0)
        self.assertEqual(n3.hour, 13)

        itr = croniter("*/5 * * * *", base)
        n4 = itr.get_next(datetime)
        self.assertEqual(n4.minute, 20)
        for i in range(6):
            itr.get_next()
        n5 = itr.get_next(datetime)
        self.assertEqual(n5.minute, 55)
        n6 = itr.get_next(datetime)
        self.assertEqual(n6.minute, 0)
        self.assertEqual(n6.hour, 13)

    def testHour(self):
        base = datetime(2010, 1, 24, 12, 2)
        itr = croniter("0 */3 * * *", base)
        n1 = itr.get_next(datetime)
        self.assertEqual(n1.hour, 15)
        self.assertEqual(n1.minute, 0)
        for i in range(2):
            itr.get_next()
        n2 = itr.get_next(datetime)
        self.assertEqual(n2.hour, 0)
        self.assertEqual(n2.day, 25)

    def testDay(self):
        base = datetime(2010, 2, 24, 12, 9)
        itr = croniter("0 0 */3 * *", base)
        n1 = itr.get_next(datetime)
        # 1 4 7 10 13 16 19 22 25 28
        self.assertEqual(n1.day, 25)
        n2 = itr.get_next(datetime)
        self.assertEqual(n2.day, 28)
        n3 = itr.get_next(datetime)
        self.assertEqual(n3.day, 1)
        self.assertEqual(n3.month, 3)

        # test leap year
        base = datetime(1996, 2, 27)
        itr = croniter("0 0 * * *", base)
        n1 = itr.get_next(datetime)
        self.assertEqual(n1.day, 28)
        self.assertEqual(n1.month, 2)
        n2 = itr.get_next(datetime)
        self.assertEqual(n2.day, 29)
        self.assertEqual(n2.month, 2)

        base2 = datetime(2000, 2, 27)
        itr2 = croniter("0 0 * * *", base2)
        n3 = itr2.get_next(datetime)
        self.assertEqual(n3.day, 28)
        self.assertEqual(n3.month, 2)
        n4 = itr2.get_next(datetime)
        self.assertEqual(n4.day, 29)
        self.assertEqual(n4.month, 2)

    def testDay2(self):
        base3 = datetime(2024, 2, 28)
        itr2 = croniter("* * 29 2 *", base3)
        n3 = itr2.get_prev(datetime)
        self.assertEqual(n3.year, 2020)
        self.assertEqual(n3.month, 2)
        self.assertEqual(n3.day, 29)

    def testWeekDay(self):
        base = datetime(2010, 2, 25)
        itr = croniter("0 0 * * sat", base)
        n1 = itr.get_next(datetime)
        self.assertEqual(n1.isoweekday(), 6)
        self.assertEqual(n1.day, 27)
        n2 = itr.get_next(datetime)
        self.assertEqual(n2.isoweekday(), 6)
        self.assertEqual(n2.day, 6)
        self.assertEqual(n2.month, 3)

        base = datetime(2010, 1, 25)
        itr = croniter("0 0 1 * wed", base)
        n1 = itr.get_next(datetime)
        self.assertEqual(n1.month, 1)
        self.assertEqual(n1.day, 27)
        self.assertEqual(n1.year, 2010)
        n2 = itr.get_next(datetime)
        self.assertEqual(n2.month, 2)
        self.assertEqual(n2.day, 1)
        self.assertEqual(n2.year, 2010)
        n3 = itr.get_next(datetime)
        self.assertEqual(n3.month, 2)
        self.assertEqual(n3.day, 3)
        self.assertEqual(n3.year, 2010)

    def testNthWeekDay(self):
        base = datetime(2010, 2, 25)
        itr = croniter("0 0 * * sat#1", base)
        n1 = itr.get_next(datetime)
        self.assertEqual(n1.isoweekday(), 6)
        self.assertEqual(n1.day, 6)
        self.assertEqual(n1.month, 3)
        n2 = itr.get_next(datetime)
        self.assertEqual(n2.isoweekday(), 6)
        self.assertEqual(n2.day, 3)
        self.assertEqual(n2.month, 4)

        base = datetime(2010, 1, 25)
        itr = croniter("0 0 * * wed#5", base)
        n1 = itr.get_next(datetime)
        self.assertEqual(n1.month, 3)
        self.assertEqual(n1.day, 31)
        self.assertEqual(n1.year, 2010)
        n2 = itr.get_next(datetime)
        self.assertEqual(n2.month, 6)
        self.assertEqual(n2.day, 30)
        self.assertEqual(n2.year, 2010)
        n3 = itr.get_next(datetime)
        self.assertEqual(n3.month, 9)
        self.assertEqual(n3.day, 29)
        self.assertEqual(n3.year, 2010)

    def testWeekDayDayAnd(self):
        base = datetime(2010, 1, 25)
        itr = croniter("0 0 1 * mon", base, day_or=False)
        n1 = itr.get_next(datetime)
        self.assertEqual(n1.month, 2)
        self.assertEqual(n1.day, 1)
        self.assertEqual(n1.year, 2010)
        n2 = itr.get_next(datetime)
        self.assertEqual(n2.month, 3)
        self.assertEqual(n2.day, 1)
        self.assertEqual(n2.year, 2010)
        n3 = itr.get_next(datetime)
        self.assertEqual(n3.month, 11)
        self.assertEqual(n3.day, 1)
        self.assertEqual(n3.year, 2010)

    def testDomDowVixieCronBug(self):
        expr = "0 16 */2 * sat"

        # UNION OF "every odd-numbered day" and "every Saturday"
        itr = croniter(expr, start_time=datetime(2023, 5, 2), ret_type=datetime)
        self.assertEqual(itr.get_next(), datetime(2023, 5, 3, 16, 0, 0))  # Wed May 3 2023
        self.assertEqual(itr.get_next(), datetime(2023, 5, 5, 16, 0, 0))  # Fri May 5 2023
        self.assertEqual(itr.get_next(), datetime(2023, 5, 6, 16, 0, 0))  # Sat May 6 2023
        self.assertEqual(itr.get_next(), datetime(2023, 5, 7, 16, 0, 0))  # Sun May 7 2023

        # INTERSECTION OF "every odd-numbered day" and "every Saturday"
        itr = croniter(
            expr,
            start_time=datetime(2023, 5, 2),
            ret_type=datetime,
            implement_cron_bug=True,
        )
        self.assertEqual(itr.get_next(), datetime(2023, 5, 13, 16, 0, 0))  # Sat May  13 2023
        self.assertEqual(itr.get_next(), datetime(2023, 5, 27, 16, 0, 0))  # Sat May  27 2023
        self.assertEqual(itr.get_next(), datetime(2023, 6, 3, 16, 0, 0))  # Sat June  3 2023
        self.assertEqual(itr.get_next(), datetime(2023, 6, 17, 16, 0, 0))  # Sun June 17 2023

    def testMonth(self):
        base = datetime(2010, 1, 25)
        itr = croniter("0 0 1 * *", base)
        n1 = itr.get_next(datetime)
        self.assertEqual(n1.month, 2)
        self.assertEqual(n1.day, 1)
        n2 = itr.get_next(datetime)
        self.assertEqual(n2.month, 3)
        self.assertEqual(n2.day, 1)
        for i in range(8):
            itr.get_next()
        n3 = itr.get_next(datetime)
        self.assertEqual(n3.month, 12)
        self.assertEqual(n3.year, 2010)
        n4 = itr.get_next(datetime)
        self.assertEqual(n4.month, 1)
        self.assertEqual(n4.year, 2011)

    def testLastDayOfMonth(self):
        base = datetime(2015, 9, 4)
        itr = croniter("0 0 l * *", base)
        n1 = itr.get_next(datetime)
        self.assertEqual(n1.month, 9)
        self.assertEqual(n1.day, 30)
        n2 = itr.get_next(datetime)
        self.assertEqual(n2.month, 10)
        self.assertEqual(n2.day, 31)
        n3 = itr.get_next(datetime)
        self.assertEqual(n3.month, 11)
        self.assertEqual(n3.day, 30)
        n4 = itr.get_next(datetime)
        self.assertEqual(n4.month, 12)
        self.assertEqual(n4.day, 31)

    def testRangeWithUppercaseLastDayOfMonth(self):
        base = datetime(2015, 9, 4)
        itr = croniter("0 0 29-L * *", base)
        n1 = itr.get_next(datetime)
        self.assertEqual(n1.month, 9)
        self.assertEqual(n1.day, 29)
        n2 = itr.get_next(datetime)
        self.assertEqual(n2.month, 9)
        self.assertEqual(n2.day, 30)

    def testPrevLastDayOfMonth(self):
        base = datetime(2009, 12, 31, hour=20)
        itr = croniter("0 0 l * *", base)
        n1 = itr.get_prev(datetime)
        self.assertEqual(n1.month, 12)
        self.assertEqual(n1.day, 31)

        base = datetime(2009, 12, 31)
        itr = croniter("0 0 l * *", base)
        n1 = itr.get_prev(datetime)
        self.assertEqual(n1.month, 11)
        self.assertEqual(n1.day, 30)

        base = datetime(2010, 1, 5)
        itr = croniter("0 0 l * *", base)
        n1 = itr.get_prev(datetime)
        self.assertEqual(n1.month, 12)
        self.assertEqual(n1.day, 31)
        n1 = itr.get_prev(datetime)
        self.assertEqual(n1.month, 11)
        self.assertEqual(n1.day, 30)
        n1 = itr.get_prev(datetime)
        self.assertEqual(n1.month, 10)
        self.assertEqual(n1.day, 31)
        n1 = itr.get_prev(datetime)
        self.assertEqual(n1.month, 9)
        self.assertEqual(n1.day, 30)

        base = datetime(2010, 1, 31, minute=2)
        itr = croniter("* * l * *", base)
        n1 = itr.get_prev(datetime)
        self.assertEqual(n1.month, 1)
        self.assertEqual(n1.day, 31)
        n1 = itr.get_prev(datetime)
        self.assertEqual(n1.month, 1)
        self.assertEqual(n1.day, 31)
        n1 = itr.get_prev(datetime)
        self.assertEqual(n1.month, 12)
        self.assertEqual(n1.day, 31)
        n1 = itr.get_prev(datetime)
        self.assertEqual(n1.month, 12)
        self.assertEqual(n1.day, 31)

    def testError(self):
        itr = croniter("* * * * *")
        self.assertRaises(TypeError, itr.get_next, str)
        self.assertRaises(ValueError, croniter, "* * * *")
        self.assertRaises(ValueError, croniter, "-90 * * * *")
        self.assertRaises(ValueError, croniter, "a * * * *")
        self.assertRaises(ValueError, croniter, "* * * janu-jun *")
        self.assertRaises(ValueError, croniter, "1-1_0 * * * *")
        self.assertRaises(ValueError, croniter, "0-10/error * * * *")
        self.assertRaises(ValueError, croniter, "0-10/ * * * *")
        self.assertRaises(CroniterBadCronError, croniter, "0-1& * * * *", datetime.now())
        self.assertRaises(ValueError, croniter, "* * 5-100 * *")

    def testSundayToThursdayWithAlphaConversion(self):
        base = datetime(2010, 8, 25, 15, 56)  # wednesday
        itr = croniter("30 22 * * sun-thu", base)
        next = itr.get_next(datetime)

        self.assertEqual(base.year, next.year)
        self.assertEqual(base.month, next.month)
        self.assertEqual(base.day, next.day)
        self.assertEqual(22, next.hour)
        self.assertEqual(30, next.minute)

    def testOptimizeCronExpressions(self):
        """Non-optimal cron expressions that can be simplified."""
        wildcard = ["*"]
        m, h, d, mon, dow, s = range(6)
        # Test each field individually
        self.assertEqual(croniter("0-59 0 1 1 0").expanded[m], wildcard)
        self.assertEqual(croniter("0 0-23 1 1 0").expanded[h], wildcard)
        self.assertEqual(croniter("0 0 1-31 1 0").expanded[dow], [0])
        self.assertEqual(croniter("0 0 1-31 1 *").expanded[d], wildcard)
        self.assertEqual(croniter("0 0 1 1-12 0").expanded[mon], wildcard)
        self.assertEqual(croniter("0 0 1 1 0-6").expanded[dow], [0, 1, 2, 3, 4, 5, 6])
        self.assertEqual(croniter("0 0 * 1 0-6").expanded[dow], wildcard)
        self.assertEqual(croniter("0 0 1 1 0-6").expanded[dow], [0, 1, 2, 3, 4, 5, 6])
        self.assertEqual(croniter("0 0 1 1 0-6,sat#3").expanded[dow], [0, 1, 2, 3, 4, 5, 6])
        self.assertEqual(croniter("0 0 * 1 0-6").expanded[dow], wildcard)
        self.assertEqual(croniter("0 0 * 1 0-6,sat#3").expanded[dow], wildcard)
        self.assertEqual(croniter("0 0 1 1 0 0-59").expanded[s], wildcard)
        # Real life examples
        self.assertEqual(croniter("30 1-12,0,10-23 15-21 * fri").expanded[h], wildcard)
        self.assertEqual(croniter("30 1-23,0 15-21 * fri").expanded[h], wildcard)

    def testBlockDupRanges(self):
        """Ensure that duplicate/overlapping ranges are squashed"""
        m, h, d, mon, dow, s = range(6)
        self.assertEqual(croniter("* 5,5,1-6 * * *").expanded[h], [1, 2, 3, 4, 5, 6])
        self.assertEqual(croniter("* * * * 2-3,4-5,3,3,3").expanded[dow], [2, 3, 4, 5])
        self.assertEqual(croniter("* * * * * 1,5,*/20,20,15").expanded[s], [0, 1, 5, 15, 20, 40])
        self.assertEqual(croniter("* 4,1-4,5,4 * * *").expanded[h], [1, 2, 3, 4, 5])
        # Real life example
        self.assertEqual(croniter("59 23 * 1 wed,fri,mon-thu,tue,tue").expanded[dow], [1, 2, 3, 4, 5])

    def testPrevMinute(self):
        base = datetime(2010, 8, 25, 15, 56)
        itr = croniter("*/1 * * * *", base)
        prev = itr.get_prev(datetime)
        self.assertEqual(base.year, prev.year)
        self.assertEqual(base.month, prev.month)
        self.assertEqual(base.day, prev.day)
        self.assertEqual(base.hour, prev.hour)
        self.assertEqual(base.minute, prev.minute + 1)

        base = datetime(2010, 8, 25, 15, 0)
        itr = croniter("*/1 * * * *", base)
        prev = itr.get_prev(datetime)
        self.assertEqual(base.year, prev.year)
        self.assertEqual(base.month, prev.month)
        self.assertEqual(base.day, prev.day)
        self.assertEqual(base.hour, prev.hour + 1)
        self.assertEqual(59, prev.minute)

        base = datetime(2010, 8, 25, 0, 0)
        itr = croniter("*/1 * * * *", base)
        prev = itr.get_prev(datetime)
        self.assertEqual(base.year, prev.year)
        self.assertEqual(base.month, prev.month)
        self.assertEqual(base.day, prev.day + 1)
        self.assertEqual(23, prev.hour)
        self.assertEqual(59, prev.minute)

    def testPrevDayOfMonthWithCrossing(self):
        """
        Test getting previous occurrence that crosses into previous month.
        """
        base = datetime(2012, 3, 15, 0, 0)
        itr = croniter("0 0 22 * *", base)
        prev = itr.get_prev(datetime)
        self.assertEqual(prev.year, 2012)
        self.assertEqual(prev.month, 2)
        self.assertEqual(prev.day, 22)
        self.assertEqual(prev.hour, 0)
        self.assertEqual(prev.minute, 0)

    def testPrevWeekDay(self):
        base = datetime(2010, 8, 25, 15, 56)
        itr = croniter("0 0 * * sat,sun", base)
        prev1 = itr.get_prev(datetime)
        self.assertEqual(prev1.year, base.year)
        self.assertEqual(prev1.month, base.month)
        self.assertEqual(prev1.day, 22)
        self.assertEqual(prev1.hour, 0)
        self.assertEqual(prev1.minute, 0)

        prev2 = itr.get_prev(datetime)
        self.assertEqual(prev2.year, base.year)
        self.assertEqual(prev2.month, base.month)
        self.assertEqual(prev2.day, 21)
        self.assertEqual(prev2.hour, 0)
        self.assertEqual(prev2.minute, 0)

        prev3 = itr.get_prev(datetime)
        self.assertEqual(prev3.year, base.year)
        self.assertEqual(prev3.month, base.month)
        self.assertEqual(prev3.day, 15)
        self.assertEqual(prev3.hour, 0)
        self.assertEqual(prev3.minute, 0)

    def testPrevNthWeekDay(self):
        base = datetime(2010, 8, 25, 15, 56)
        itr = croniter("0 0 * * sat#1,sun#2", base)
        prev1 = itr.get_prev(datetime)
        self.assertEqual(prev1.year, base.year)
        self.assertEqual(prev1.month, base.month)
        self.assertEqual(prev1.day, 8)
        self.assertEqual(prev1.hour, 0)
        self.assertEqual(prev1.minute, 0)

        prev2 = itr.get_prev(datetime)
        self.assertEqual(prev2.year, base.year)
        self.assertEqual(prev2.month, base.month)
        self.assertEqual(prev2.day, 7)
        self.assertEqual(prev2.hour, 0)
        self.assertEqual(prev2.minute, 0)

        prev3 = itr.get_prev(datetime)
        self.assertEqual(prev3.year, base.year)
        self.assertEqual(prev3.month, 7)
        self.assertEqual(prev3.day, 11)
        self.assertEqual(prev3.hour, 0)
        self.assertEqual(prev3.minute, 0)

    def testPrevWeekDay2(self):
        base = datetime(2010, 8, 25, 15, 56)
        itr = croniter("10 0 * * 0", base)
        prev = itr.get_prev(datetime)
        self.assertEqual(prev.day, 22)
        self.assertEqual(prev.hour, 0)
        self.assertEqual(prev.minute, 10)

    def testISOWeekday(self):
        base = datetime(2010, 2, 25)
        itr = croniter("0 0 * * 6", base)
        n1 = itr.get_next(datetime)
        self.assertEqual(n1.isoweekday(), 6)
        self.assertEqual(n1.day, 27)
        n2 = itr.get_next(datetime)
        self.assertEqual(n2.isoweekday(), 6)
        self.assertEqual(n2.day, 6)
        self.assertEqual(n2.month, 3)

    def testBug1(self):
        base = datetime(2012, 2, 24)
        itr = croniter("5 0 */2 * *", base)
        n1 = itr.get_prev(datetime)
        self.assertEqual(n1.hour, 0)
        self.assertEqual(n1.minute, 5)
        self.assertEqual(n1.month, 2)
        # month starts from 1, 3 .... then 21, 23
        # so correct is not 22  but 23
        self.assertEqual(n1.day, 23)

    def testBug2(self):
        base = datetime(2012, 1, 1, 0, 0)
        iter = croniter("0 * * 3 *", base)
        n1 = iter.get_next(datetime)
        self.assertEqual(n1.year, base.year)
        self.assertEqual(n1.month, 3)
        self.assertEqual(n1.day, base.day)
        self.assertEqual(n1.hour, base.hour)
        self.assertEqual(n1.minute, base.minute)

        n2 = iter.get_next(datetime)
        self.assertEqual(n2.year, base.year)
        self.assertEqual(n2.month, 3)
        self.assertEqual(n2.day, base.day)
        self.assertEqual(n2.hour, base.hour + 1)
        self.assertEqual(n2.minute, base.minute)

        n3 = iter.get_next(datetime)
        self.assertEqual(n3.year, base.year)
        self.assertEqual(n3.month, 3)
        self.assertEqual(n3.day, base.day)
        self.assertEqual(n3.hour, base.hour + 2)
        self.assertEqual(n3.minute, base.minute)

    def testBug3(self):
        base = datetime(2013, 3, 1, 12, 17, 34, 257877)
        c = croniter("00 03 16,30 * *", base)

        n1 = c.get_next(datetime)
        self.assertEqual(n1.month, 3)
        self.assertEqual(n1.day, 16)

        n2 = c.get_next(datetime)
        self.assertEqual(n2.month, 3)
        self.assertEqual(n2.day, 30)

        n3 = c.get_next(datetime)
        self.assertEqual(n3.month, 4)
        self.assertEqual(n3.day, 16)

        n4 = c.get_prev(datetime)
        self.assertEqual(n4.month, 3)
        self.assertEqual(n4.day, 30)

        n5 = c.get_prev(datetime)
        self.assertEqual(n5.month, 3)
        self.assertEqual(n5.day, 16)

        n6 = c.get_prev(datetime)
        self.assertEqual(n6.month, 2)
        self.assertEqual(n6.day, 16)

    def test_bug34(self):
        base = datetime(2012, 2, 24, 0, 0, 0)
        itr = croniter("* * 31 2 *", base)
        try:
            itr.get_next(datetime)
        except (CroniterBadDateError,) as ex:
            self.assertEqual("{0}".format(ex), "failed to find next date")

    def testBug57(self):
        base = datetime(2012, 2, 24, 0, 0, 0)
        itr = croniter("0 4/6 * * *", base)
        n1 = itr.get_next(datetime)
        self.assertEqual(n1.hour, 4)
        self.assertEqual(n1.minute, 0)
        self.assertEqual(n1.month, 2)
        self.assertEqual(n1.day, 24)

        n1 = itr.get_prev(datetime)
        self.assertEqual(n1.hour, 22)
        self.assertEqual(n1.minute, 0)
        self.assertEqual(n1.month, 2)
        self.assertEqual(n1.day, 23)

        itr = croniter("0 0/6 * * *", base)
        n1 = itr.get_next(datetime)
        self.assertEqual(n1.hour, 6)
        self.assertEqual(n1.minute, 0)
        self.assertEqual(n1.month, 2)
        self.assertEqual(n1.day, 24)

        n1 = itr.get_prev(datetime)
        self.assertEqual(n1.hour, 0)
        self.assertEqual(n1.minute, 0)
        self.assertEqual(n1.month, 2)
        self.assertEqual(n1.day, 24)

    def test_multiple_months(self):
        base = datetime(2016, 3, 1, 0, 0, 0)
        itr = croniter("0 0 1 3,6,9,12 *", base)
        n1 = itr.get_next(datetime)
        self.assertEqual(n1.hour, 0)
        self.assertEqual(n1.month, 6)
        self.assertEqual(n1.day, 1)
        self.assertEqual(n1.year, 2016)

        base = datetime(2016, 2, 15, 0, 0, 0)
        itr = croniter("0 0 1 3,6,9,12 *", base)
        n1 = itr.get_next(datetime)
        self.assertEqual(n1.hour, 0)
        self.assertEqual(n1.month, 3)
        self.assertEqual(n1.day, 1)
        self.assertEqual(n1.year, 2016)

        base = datetime(2016, 12, 3, 10, 0, 0)
        itr = croniter("0 0 1 3,6,9,12 *", base)
        n1 = itr.get_next(datetime)
        self.assertEqual(n1.hour, 0)
        self.assertEqual(n1.month, 3)
        self.assertEqual(n1.day, 1)
        self.assertEqual(n1.year, 2017)

        # The result with this parameters was incorrect.
        # self.assertEqual(p1.month, 12
        # AssertionError: 9 != 12
        base = datetime(2016, 3, 1, 0, 0, 0)
        itr = croniter("0 0 1 3,6,9,12 *", base)
        p1 = itr.get_prev(datetime)
        self.assertEqual(p1.hour, 0)
        self.assertEqual(p1.month, 12)
        self.assertEqual(p1.day, 1)
        self.assertEqual(p1.year, 2015)

        # check my change resolves another hidden bug.
        base = datetime(2016, 2, 1, 0, 0, 0)
        itr = croniter("0 0 1,15,31 * *", base)
        p1 = itr.get_prev(datetime)
        self.assertEqual(p1.hour, 0)
        self.assertEqual(p1.month, 1)
        self.assertEqual(p1.day, 31)
        self.assertEqual(p1.year, 2016)

        base = datetime(2016, 6, 1, 0, 0, 0)
        itr = croniter("0 0 1 3,6,9,12 *", base)
        p1 = itr.get_prev(datetime)
        self.assertEqual(p1.hour, 0)
        self.assertEqual(p1.month, 3)
        self.assertEqual(p1.day, 1)
        self.assertEqual(p1.year, 2016)

        base = datetime(2016, 3, 1, 0, 0, 0)
        itr = croniter("0 0 1 1,3,6,9,12 *", base)
        p1 = itr.get_prev(datetime)
        self.assertEqual(p1.hour, 0)
        self.assertEqual(p1.month, 1)
        self.assertEqual(p1.day, 1)
        self.assertEqual(p1.year, 2016)

        base = datetime(2016, 3, 1, 0, 0, 0)
        itr = croniter("0 0 1 1,3,6,9,12 *", base)
        p1 = itr.get_prev(datetime)
        self.assertEqual(p1.hour, 0)
        self.assertEqual(p1.month, 1)
        self.assertEqual(p1.day, 1)
        self.assertEqual(p1.year, 2016)

    def test_rangeGenerator(self):
        base = datetime(2013, 3, 4, 0, 0)
        itr = croniter("1-9/2 0 1 * *", base)
        n1 = itr.get_next(datetime)
        n2 = itr.get_next(datetime)
        n3 = itr.get_next(datetime)
        n4 = itr.get_next(datetime)
        n5 = itr.get_next(datetime)
        self.assertEqual(n1.minute, 1)
        self.assertEqual(n2.minute, 3)
        self.assertEqual(n3.minute, 5)
        self.assertEqual(n4.minute, 7)
        self.assertEqual(n5.minute, 9)

    def testPreviousHour(self):
        base = datetime(2012, 6, 23, 17, 41)
        itr = croniter("* 10 * * *", base)
        prev1 = itr.get_prev(datetime)
        self.assertEqual(prev1.year, base.year)
        self.assertEqual(prev1.month, base.month)
        self.assertEqual(prev1.day, base.day)
        self.assertEqual(prev1.hour, 10)
        self.assertEqual(prev1.minute, 59)

    def testPreviousDay(self):
        base = datetime(2012, 6, 27, 0, 15)
        itr = croniter("* * 26 * *", base)
        prev1 = itr.get_prev(datetime)
        self.assertEqual(prev1.year, base.year)
        self.assertEqual(prev1.month, base.month)
        self.assertEqual(prev1.day, 26)
        self.assertEqual(prev1.hour, 23)
        self.assertEqual(prev1.minute, 59)

    def testPreviousMonth(self):
        base = datetime(2012, 6, 18, 0, 15)
        itr = croniter("* * * 5 *", base)
        prev1 = itr.get_prev(datetime)
        self.assertEqual(prev1.year, base.year)
        self.assertEqual(prev1.month, 5)
        self.assertEqual(prev1.day, 31)
        self.assertEqual(prev1.hour, 23)
        self.assertEqual(prev1.minute, 59)

    def testPreviousDow(self):
        base = datetime(2012, 5, 13, 18, 48)
        itr = croniter("* * * * sat", base)
        prev1 = itr.get_prev(datetime)
        self.assertEqual(prev1.year, base.year)
        self.assertEqual(prev1.month, base.month)
        self.assertEqual(prev1.day, 12)
        self.assertEqual(prev1.hour, 23)
        self.assertEqual(prev1.minute, 59)

    def testGetCurrent(self):
        base = datetime(2012, 9, 25, 11, 24)
        itr = croniter("* * * * *", base)
        res = itr.get_current(datetime)
        self.assertEqual(base.year, res.year)
        self.assertEqual(base.month, res.month)
        self.assertEqual(base.day, res.day)
        self.assertEqual(base.hour, res.hour)
        self.assertEqual(base.minute, res.minute)

    def testTimezone(self):
        base = datetime(2013, 3, 4, 12, 15)
        itr = croniter("* * * * *", base)
        n1 = itr.get_next(datetime)
        self.assertEqual(n1.tzinfo, None)

        tokyo = pytz.timezone("Asia/Tokyo")
        itr2 = croniter("* * * * *", tokyo.localize(base))
        n2 = itr2.get_next(datetime)
        self.assertEqual(n2.tzinfo.zone, "Asia/Tokyo")

    def testTimezoneDateutil(self):
        tokyo = dateutil.tz.gettz("Asia/Tokyo")
        base = datetime(2013, 3, 4, 12, 15, tzinfo=tokyo)
        itr = croniter("* * * * *", base)
        n1 = itr.get_next(datetime)
        self.assertEqual(n1.tzinfo.tzname(n1), "JST")

    def testInitNoStartTime(self):
        itr = croniter("* * * * *")
        sleep(0.01)
        itr2 = croniter("* * * * *")
        # Greater does not exists in py26
        self.assertTrue(itr2.cur > itr.cur)

    def assertScheduleTimezone(self, callback, expected_schedule):
        for expected_date, expected_offset in expected_schedule:
            d = callback()
            self.assertEqual(expected_date, d.replace(tzinfo=None))
            self.assertEqual(expected_offset, croniter._timedelta_to_seconds(d.utcoffset()))

    def testTimezoneWinterTime(self):
        tz = pytz.timezone("Europe/Athens")

        expected_schedule = [
            (datetime(2013, 10, 27, 2, 30, 0), 10800),
            (datetime(2013, 10, 27, 3, 0, 0), 10800),
            (datetime(2013, 10, 27, 3, 30, 0), 10800),
            (datetime(2013, 10, 27, 3, 0, 0), 7200),
            (datetime(2013, 10, 27, 3, 30, 0), 7200),
            (datetime(2013, 10, 27, 4, 0, 0), 7200),
            (datetime(2013, 10, 27, 4, 30, 0), 7200),
        ]

        start = datetime(2013, 10, 27, 2, 0, 0)
        ct = croniter("*/30 * * * *", tz.localize(start))
        self.assertScheduleTimezone(lambda: ct.get_next(datetime), expected_schedule)

        start = datetime(2013, 10, 27, 5, 0, 0)
        ct = croniter("*/30 * * * *", tz.localize(start))
        self.assertScheduleTimezone(lambda: ct.get_prev(datetime), reversed(expected_schedule))

    def testTimezoneSummerTime(self):
        tz = pytz.timezone("Europe/Athens")

        expected_schedule = [
            (datetime(2013, 3, 31, 1, 30, 0), 7200),
            (datetime(2013, 3, 31, 2, 0, 0), 7200),
            (datetime(2013, 3, 31, 2, 30, 0), 7200),
            (datetime(2013, 3, 31, 4, 0, 0), 10800),
            (datetime(2013, 3, 31, 4, 30, 0), 10800),
        ]

        start = datetime(2013, 3, 31, 1, 0, 0)
        ct = croniter("*/30 * * * *", tz.localize(start))
        self.assertScheduleTimezone(lambda: ct.get_next(datetime), expected_schedule)

        start = datetime(2013, 3, 31, 5, 0, 0)
        ct = croniter("*/30 * * * *", tz.localize(start))
        self.assertScheduleTimezone(lambda: ct.get_prev(datetime), reversed(expected_schedule))

    def test_std_dst(self):
        """
        DST tests

        This fixes https://github.com/taichino/croniter/issues/82

        """
        tz = pytz.timezone("Europe/Warsaw")
        # -> 2017-03-26 01:59+1:00 -> 03:00+2:00
        local_date = tz.localize(datetime(2017, 3, 26))
        val = croniter("0 0 * * *", local_date).get_next(datetime)
        self.assertEqual(val, tz.localize(datetime(2017, 3, 27)))
        #
        local_date = tz.localize(datetime(2017, 3, 26, 1))
        cr = croniter("0 * * * *", local_date)
        val = cr.get_next(datetime)
        self.assertEqual(val, tz.localize(datetime(2017, 3, 26, 3)))
        val = cr.get_current(datetime)
        self.assertEqual(val, tz.localize(datetime(2017, 3, 26, 3)))

        # -> 2017-10-29 02:59+2:00 -> 02:00+1:00
        local_date = tz.localize(datetime(2017, 10, 29))
        val = croniter("0 0 * * *", local_date).get_next(datetime)
        self.assertEqual(val, tz.localize(datetime(2017, 10, 30)))
        local_date = tz.localize(datetime(2017, 10, 29, 1, 59))
        val = croniter("0 * * * *", local_date).get_next(datetime)
        self.assertEqual(
            val.replace(tzinfo=None),
            tz.localize(datetime(2017, 10, 29, 2)).replace(tzinfo=None),
        )
        local_date = tz.localize(datetime(2017, 10, 29, 2))
        val = croniter("0 * * * *", local_date).get_next(datetime)
        self.assertEqual(val, tz.localize(datetime(2017, 10, 29, 3)))
        local_date = tz.localize(datetime(2017, 10, 29, 3))
        val = croniter("0 * * * *", local_date).get_next(datetime)
        self.assertEqual(val, tz.localize(datetime(2017, 10, 29, 4)))
        local_date = tz.localize(datetime(2017, 10, 29, 4))
        val = croniter("0 * * * *", local_date).get_next(datetime)
        self.assertEqual(val, tz.localize(datetime(2017, 10, 29, 5)))
        local_date = tz.localize(datetime(2017, 10, 29, 5))
        val = croniter("0 * * * *", local_date).get_next(datetime)
        self.assertEqual(val, tz.localize(datetime(2017, 10, 29, 6)))

    def test_std_dst2(self):
        """
        DST tests

        This fixes https://github.com/taichino/croniter/issues/87

        São Paulo, Brazil: 18/02/2018 00:00 -> 17/02/2018 23:00

        """
        tz = pytz.timezone("America/Sao_Paulo")
        local_dates = [
            # 17-22: 00 -> 18-00:00
            (tz.localize(datetime(2018, 2, 17, 21, 0, 0)), "2018-02-18 00:00:00-03:00"),
            # 17-23: 00 -> 18-00:00
            (tz.localize(datetime(2018, 2, 17, 22, 0, 0)), "2018-02-18 00:00:00-03:00"),
            # 17-23: 00 -> 18-00:00
            (tz.localize(datetime(2018, 2, 17, 23, 0, 0)), "2018-02-18 00:00:00-03:00"),
            # 18-00: 00 -> 19-00:00
            (tz.localize(datetime(2018, 2, 18, 0, 0, 0)), "2018-02-19 00:00:00-03:00"),
            # 17-22: 00 -> 18-00:00
            (tz.localize(datetime(2018, 2, 17, 21, 5, 0)), "2018-02-18 00:00:00-03:00"),
            # 17-23: 00 -> 18-00:00
            (tz.localize(datetime(2018, 2, 17, 22, 5, 0)), "2018-02-18 00:00:00-03:00"),
            # 17-23: 00 -> 18-00:00
            (tz.localize(datetime(2018, 2, 17, 23, 5, 0)), "2018-02-18 00:00:00-03:00"),
            # 18-00: 00 -> 19-00:00
            (tz.localize(datetime(2018, 2, 18, 0, 5, 0)), "2018-02-19 00:00:00-03:00"),
        ]
        ret1 = [croniter("0 0 * * *", d[0]).get_next(datetime) for d in local_dates]
        sret1 = ["{0}".format(d) for d in ret1]
        lret1 = ["{0}".format(d[1]) for d in local_dates]
        self.assertEqual(sret1, lret1)

    def test_std_dst3(self):
        """
        DST tests

        This fixes https://github.com/taichino/croniter/issues/90

        Adelaide, Australia: 15/04/2020 00:00 -> 15/03/2020

        """

        tz = pytz.timezone("Australia/Adelaide")

        schedule = croniter("0 0 24 * *", tz.localize(datetime(2020, 4, 15)))
        val1 = schedule.get_prev(datetime)
        dt1 = tz.localize(datetime(2020, 3, 24))
        self.assertEqual(val1, dt1)

        val2 = schedule.get_next(datetime)
        dt2 = tz.localize(datetime(2020, 4, 24))
        self.assertEqual(val2, dt2)

    def test_error_alpha_cron(self):
        self.assertRaises(CroniterNotAlphaError, croniter.expand, "* * * janu-jun *")

    def test_error_bad_cron(self):
        self.assertRaises(CroniterBadCronError, croniter.expand, "* * * *")
        self.assertRaises(
            CroniterBadCronError,
            croniter.expand,
            ("* " * (max(VALID_LEN_EXPRESSION) + 1)).strip(),
        )

    def test_is_valid(self):
        self.assertTrue(croniter.is_valid("0 * * * *"))
        self.assertFalse(croniter.is_valid("0 * *"))
        self.assertFalse(croniter.is_valid("* * * janu-jun *"))
        self.assertTrue(croniter.is_valid("H 0 * * *", hash_id="abc"))

    def test_exactly_the_same_minute(self):
        base = datetime(2018, 3, 5, 12, 30, 50)
        itr = croniter("30 7,12,17 * * *", base)
        n1 = itr.get_prev(datetime)
        self.assertEqual(12, n1.hour)

        n2 = itr.get_prev(datetime)
        self.assertEqual(7, n2.hour)

        n3 = itr.get_next(datetime)
        self.assertEqual(12, n3.hour)

    def test_next_when_now_satisfies_cron(self):
        ts_a = datetime(2018, 5, 21, 0, 3, 0)
        ts_b = datetime(2018, 5, 21, 0, 4, 20)
        test_cron = "4 * * * *"

        next_a = croniter(test_cron, start_time=ts_a).get_next()
        next_b = croniter(test_cron, start_time=ts_b).get_next()

        self.assertTrue(next_b > next_a)

    def test_milliseconds(self):
        """
        https://github.com/taichino/croniter/issues/107
        """

        _croniter = partial(croniter, "0 10 * * *", ret_type=datetime)

        dt = datetime(2018, 1, 2, 10, 0, 0, 500)
        self.assertEqual(
            _croniter(start_time=dt).get_prev(),
            datetime(2018, 1, 2, 10, 0),
        )
        self.assertEqual(
            _croniter(start_time=dt).get_next(),
            datetime(2018, 1, 3, 10, 0),
        )

        dt = datetime(2018, 1, 2, 10, 0, 1, 0)
        self.assertEqual(
            _croniter(start_time=dt).get_prev(),
            datetime(2018, 1, 2, 10, 0),
        )
        self.assertEqual(
            _croniter(start_time=dt).get_next(),
            datetime(2018, 1, 3, 10, 0),
        )

        dt = datetime(2018, 1, 2, 9, 59, 59, 999999)
        self.assertEqual(
            _croniter(start_time=dt).get_prev(),
            datetime(2018, 1, 1, 10, 0),
        )
        self.assertEqual(
            _croniter(start_time=dt).get_next(),
            datetime(2018, 1, 2, 10, 0),
        )

    def test_invalid_zerorepeat(self):
        self.assertFalse(croniter.is_valid("*/0 * * * *"))

    def test_weekday_range(self):
        ret = []
        # jan 14 is monday
        dt = datetime(2019, 1, 14, 0, 0, 0, 0)
        for i in range(10):
            c = croniter("0 0 * * 2-4 *", start_time=dt)
            dt = datetime.fromtimestamp(c.get_next(), dateutil.tz.tzutc()).replace(tzinfo=None)
            ret.append(dt)
            dt += timedelta(days=1)
        sret = ["{0}".format(r) for r in ret]
        self.assertEqual(
            sret,
            [
                "2019-01-15 00:00:00",
                "2019-01-16 00:00:01",
                "2019-01-17 00:00:02",
                "2019-01-22 00:00:00",
                "2019-01-23 00:00:01",
                "2019-01-24 00:00:02",
                "2019-01-29 00:00:00",
                "2019-01-30 00:00:01",
                "2019-01-31 00:00:02",
                "2019-02-05 00:00:00",
            ],
        )
        ret = []
        dt = datetime(2019, 1, 14, 0, 0, 0, 0)
        for i in range(10):
            c = croniter("0 0 * * 0-6 *", start_time=dt)
            dt = datetime.fromtimestamp(c.get_next(), dateutil.tz.tzutc()).replace(tzinfo=None)
            ret.append(dt)
            dt += timedelta(days=1)
        sret = ["{0}".format(r) for r in ret]
        self.assertEqual(
            sret,
            [
                "2019-01-14 00:00:01",
                "2019-01-15 00:00:02",
                "2019-01-16 00:00:03",
                "2019-01-17 00:00:04",
                "2019-01-18 00:00:05",
                "2019-01-19 00:00:06",
                "2019-01-20 00:00:07",
                "2019-01-21 00:00:08",
                "2019-01-22 00:00:09",
                "2019-01-23 00:00:10",
            ],
        )

    def test_issue_monsun_117(self):
        ret = []
        dt = datetime(2019, 1, 14, 0, 0, 0, 0)
        for i in range(12):
            # c = croniter("0 0 * * Mon-Sun *", start_time=dt)
            c = croniter("0 0 * * Wed-Sun *", start_time=dt)
            dt = datetime.fromtimestamp(c.get_next(), tz=dateutil.tz.tzutc()).replace(tzinfo=None)
            ret.append(dt)
            dt += timedelta(days=1)
        sret = ["{0}".format(r) for r in ret]
        self.assertEqual(
            sret,
            [
                "2019-01-16 00:00:00",
                "2019-01-17 00:00:01",
                "2019-01-18 00:00:02",
                "2019-01-19 00:00:03",
                "2019-01-20 00:00:04",
                "2019-01-23 00:00:00",
                "2019-01-24 00:00:01",
                "2019-01-25 00:00:02",
                "2019-01-26 00:00:03",
                "2019-01-27 00:00:04",
                "2019-01-30 00:00:00",
                "2019-01-31 00:00:01",
            ],
        )

    def test_mixdow(self):
        base = datetime(2018, 10, 1, 0, 0)
        itr = croniter("1 1 7,14,21,L * *", base)
        self.assertTrue(isinstance(itr.get_next(), float))

    def test_match(self):
        self.assertTrue(croniter.match("0 0 * * *", datetime(2019, 1, 14, 0, 0, 0, 0)))
        self.assertFalse(croniter.match("0 0 * * *", datetime(2019, 1, 14, 0, 1, 0, 0)))
        self.assertTrue(croniter.match("0 0 * * * 1", datetime(2023, 5, 25, 0, 0, 1, 0)))
        self.assertFalse(croniter.match("0 0 * * * 1", datetime(2023, 5, 25, 0, 0, 2, 0)))
        self.assertTrue(croniter.match("31 * * * *", datetime(2019, 1, 14, 1, 31, 0, 0)))
        self.assertTrue(croniter.match("0 0 10 * wed", datetime(2020, 6, 10, 0, 0, 0, 0), day_or=True))
        self.assertTrue(croniter.match("0 0 10 * fri", datetime(2020, 6, 10, 0, 0, 0, 0), day_or=True))
        self.assertTrue(croniter.match("0 0 10 * fri", datetime(2020, 6, 12, 0, 0, 0, 0), day_or=True))
        self.assertTrue(croniter.match("0 0 10 * wed", datetime(2020, 6, 10, 0, 0, 0, 0), day_or=False))
        self.assertFalse(croniter.match("0 0 10 * fri", datetime(2020, 6, 10, 0, 0, 0, 0), day_or=False))
        self.assertFalse(croniter.match("0 0 10 * fri", datetime(2020, 6, 12, 0, 0, 0, 0), day_or=False))

    def test_match_handle_bad_cron(self):
        # some cron expression can"t get prev value and should not raise exception
        self.assertFalse(croniter.match("0 0 31 1 1#1", datetime(2020, 1, 31), day_or=False))
        self.assertFalse(
            croniter.match(
                "0 0 31 1 * 0 2024/2",
                datetime(2020, 1, 31),
            )
        )

    def test_match_range(self):
        self.assertTrue(
            croniter.match_range(
                "0 0 * * *",
                datetime(2019, 1, 13, 0, 59, 0, 0),
                datetime(2019, 1, 14, 0, 1, 0, 0),
            )
        )
        self.assertFalse(
            croniter.match_range(
                "0 0 * * *",
                datetime(2019, 1, 13, 0, 1, 0, 0),
                datetime(2019, 1, 13, 0, 59, 0, 0),
            )
        )
        self.assertTrue(
            croniter.match_range(
                "0 0 * * * 1",
                datetime(2023, 5, 25, 0, 0, 0, 0),
                datetime(2023, 5, 25, 0, 0, 2, 0),
            )
        )
        self.assertFalse(
            croniter.match_range(
                "0 0 * * * 1",
                datetime(2023, 5, 25, 0, 0, 2, 0),
                datetime(2023, 5, 25, 0, 0, 4, 0),
            )
        )
        self.assertTrue(
            croniter.match_range(
                "0 0 * * * 1",
                datetime(2023, 5, 25, 0, 0, 1, 0),
                datetime(2023, 5, 25, 0, 0, 4, 0),
            )
        )
        self.assertTrue(
            croniter.match_range(
                "31 * * * *",
                datetime(2019, 1, 14, 1, 30, 0, 0),
                datetime(2019, 1, 14, 1, 31, 0, 0),
            )
        )
        self.assertTrue(
            croniter.match_range(
                "0 0 10 * wed",
                datetime(2020, 6, 9, 0, 0, 0, 0),
                datetime(2020, 6, 11, 0, 0, 0, 0),
                day_or=True,
            )
        )
        self.assertTrue(
            croniter.match_range(
                "0 0 10 * fri",
                datetime(2020, 6, 10, 0, 0, 0, 0),
                datetime(2020, 6, 11, 0, 0, 0, 0),
                day_or=True,
            )
        )
        self.assertTrue(
            croniter.match_range(
                "0 0 10 * fri",
                datetime(2020, 6, 11, 0, 0, 0, 0),
                datetime(2020, 6, 12, 0, 0, 0, 0),
                day_or=True,
            )
        )
        self.assertTrue(
            croniter.match_range(
                "0 0 10 * wed",
                datetime(2020, 6, 9, 0, 0, 0, 0),
                datetime(2020, 6, 12, 0, 0, 0, 0),
                day_or=False,
            )
        )
        self.assertFalse(
            croniter.match_range(
                "0 0 10 * fri",
                datetime(2020, 6, 8, 0, 0, 0, 0),
                datetime(2020, 6, 9, 0, 0, 0, 0),
                day_or=False,
            )
        )
        self.assertFalse(
            croniter.match_range(
                "0 0 10 * fri",
                datetime(2020, 6, 7, 0, 0, 0, 0),
                datetime(2020, 6, 11, 0, 0, 0, 0),
                day_or=False,
            )
        )
        self.assertFalse(
            croniter.match_range(
                "2 4 1 * wed",
                datetime(2019, 1, 1, 3, 2, 0, 0),
                datetime(2019, 1, 1, 5, 2, 0, 0),
                day_or=False,
            )
        )

    def test_dst_issue90_st31ny(self):
        tz = pytz.timezone("Europe/Paris")
        now = datetime(2020, 3, 29, 1, 59, 55, tzinfo=tz)
        it = croniter("1 2 * * *", now)
        #
        # Taking around DST @ 29/03/20 01:59
        #
        ret = [
            it.get_next(datetime).isoformat(),
            it.get_prev(datetime).isoformat(),
            it.get_prev(datetime).isoformat(),
            it.get_next(datetime).isoformat(),
            it.get_next(datetime).isoformat(),
        ]
        self.assertEqual(
            ret,
            [
                "2020-03-30T02:01:00+02:00",
                "2020-03-29T01:01:00+01:00",
                "2020-03-28T03:01:00+01:00",
                "2020-03-29T03:01:00+02:00",
                "2020-03-30T02:01:00+02:00",
            ],
        )
        #
        nowp = datetime(2020, 3, 28, 1, 58, 55, tzinfo=tz)
        itp = croniter("1 2 * * *", nowp)
        retp = [
            itp.get_next(datetime).isoformat(),
            itp.get_prev(datetime).isoformat(),
            itp.get_prev(datetime).isoformat(),
            itp.get_next(datetime).isoformat(),
            itp.get_next(datetime).isoformat(),
        ]
        self.assertEqual(
            retp,
            [
                "2020-03-29T03:01:00+02:00",
                "2020-03-29T01:01:00+01:00",
                "2020-03-28T03:01:00+01:00",
                "2020-03-29T03:01:00+02:00",
                "2020-03-30T02:01:00+02:00",
            ],
        )
        #
        nowt = datetime(2020, 3, 29, 2, 0, 0, tzinfo=tz)
        itt = croniter("1 2 * * *", nowt)
        rett = [
            itt.get_next(datetime).isoformat(),
            itt.get_prev(datetime).isoformat(),
            itt.get_prev(datetime).isoformat(),
            itt.get_next(datetime).isoformat(),
            itt.get_next(datetime).isoformat(),
        ]
        self.assertEqual(
            rett,
            [
                "2020-03-30T02:01:00+02:00",
                "2020-03-29T01:01:00+01:00",
                "2020-03-28T03:01:00+01:00",
                "2020-03-29T03:01:00+02:00",
                "2020-03-30T02:01:00+02:00",
            ],
        )

    def test_dst_iter(self):
        tz = pytz.timezone("Asia/Hebron")
        now = datetime(2022, 3, 26, 0, 0, 0, tzinfo=tz)
        it = croniter("0 0 * * *", now)
        ret = [
            it.get_next(datetime).isoformat(),
            it.get_next(datetime).isoformat(),
            it.get_next(datetime).isoformat(),
        ]
        self.assertEqual(
            ret,
            [
                "2022-03-26T00:00:00+02:00",
                "2022-03-27T01:00:00+03:00",
                "2022-03-28T00:00:00+03:00",
            ],
        )

    def test_nth_wday_simple(self):
        f = lambda y, m, w: croniter._get_nth_weekday_of_month(y, m, w)
        sun, mon, tue, wed, thu, fri, sat = range(7)

        self.assertEqual(f(2000, 1, mon), (3, 10, 17, 24, 31))
        self.assertEqual(f(2000, 2, tue), (1, 8, 15, 22, 29))  # Leap year
        self.assertEqual(f(2000, 3, wed), (1, 8, 15, 22, 29))
        self.assertEqual(f(2000, 4, thu), (6, 13, 20, 27))
        self.assertEqual(f(2000, 2, fri), (4, 11, 18, 25))
        self.assertEqual(f(2000, 2, sat), (5, 12, 19, 26))

    def test_nth_as_last_wday_simple(self):
        f = lambda y, m, w: croniter._get_nth_weekday_of_month(y, m, w)[-1]
        sun, mon, tue, wed, thu, fri, sat = range(7)
        self.assertEqual(f(2000, 2, tue), 29)
        self.assertEqual(f(2000, 2, sun), 27)
        self.assertEqual(f(2000, 2, mon), 28)
        self.assertEqual(f(2000, 2, wed), 23)
        self.assertEqual(f(2000, 2, thu), 24)
        self.assertEqual(f(2000, 2, fri), 25)
        self.assertEqual(f(2000, 2, sat), 26)

    def test_wdom_core_leap_year(self):
        f = lambda y, m, w: croniter._get_nth_weekday_of_month(y, m, w)[-1]
        sun, mon, tue, wed, thu, fri, sat = range(7)
        self.assertEqual(f(2000, 2, tue), 29)
        self.assertEqual(f(2000, 2, sun), 27)
        self.assertEqual(f(2000, 2, mon), 28)
        self.assertEqual(f(2000, 2, wed), 23)
        self.assertEqual(f(2000, 2, thu), 24)
        self.assertEqual(f(2000, 2, fri), 25)
        self.assertEqual(f(2000, 2, sat), 26)

    def test_lwom_friday(self):
        it = croniter("0 0 * * L5", datetime(1987, 1, 15), ret_type=datetime)
        items = [next(it) for i in range(12)]
        self.assertListEqual(
            items,
            [
                datetime(1987, 1, 30),
                datetime(1987, 2, 27),
                datetime(1987, 3, 27),
                datetime(1987, 4, 24),
                datetime(1987, 5, 29),
                datetime(1987, 6, 26),
                datetime(1987, 7, 31),
                datetime(1987, 8, 28),
                datetime(1987, 9, 25),
                datetime(1987, 10, 30),
                datetime(1987, 11, 27),
                datetime(1987, 12, 25),
            ],
        )

    def test_lwom_friday_2hours(self):
        # This works with +/- "days=1' in proc_day_of_week_last() and I don't know WHY?!?
        it = croniter("0 1,5 * * L5", datetime(1987, 1, 15), ret_type=datetime)
        items = [next(it) for i in range(12)]
        self.assertListEqual(
            items,
            [
                datetime(1987, 1, 30, 1),
                datetime(1987, 1, 30, 5),
                datetime(1987, 2, 27, 1),
                datetime(1987, 2, 27, 5),
                datetime(1987, 3, 27, 1),
                datetime(1987, 3, 27, 5),
                datetime(1987, 4, 24, 1),
                datetime(1987, 4, 24, 5),
                datetime(1987, 5, 29, 1),
                datetime(1987, 5, 29, 5),
                datetime(1987, 6, 26, 1),
                datetime(1987, 6, 26, 5),
            ],
        )

    def test_lwom_friday_2xh_2xm(self):
        it = croniter("0,30 1,5 * * L5", datetime(1987, 1, 15), ret_type=datetime)
        items = [next(it) for i in range(12)]
        self.assertListEqual(
            items,
            [
                datetime(1987, 1, 30, 1, 0),
                datetime(1987, 1, 30, 1, 30),
                datetime(1987, 1, 30, 5, 0),
                datetime(1987, 1, 30, 5, 30),
                datetime(1987, 2, 27, 1, 0),
                datetime(1987, 2, 27, 1, 30),
                datetime(1987, 2, 27, 5, 0),
                datetime(1987, 2, 27, 5, 30),
                datetime(1987, 3, 27, 1, 0),
                datetime(1987, 3, 27, 1, 30),
                datetime(1987, 3, 27, 5, 0),
                datetime(1987, 3, 27, 5, 30),
            ],
        )

    def test_lwom_saturday_rev(self):
        it = croniter("0 0 * * L6", datetime(2017, 12, 31), ret_type=datetime, is_prev=True)
        items = [next(it) for i in range(12)]
        self.assertListEqual(
            items,
            [
                datetime(2017, 12, 30),
                datetime(2017, 11, 25),
                datetime(2017, 10, 28),
                datetime(2017, 9, 30),
                datetime(2017, 8, 26),
                datetime(2017, 7, 29),
                datetime(2017, 6, 24),
                datetime(2017, 5, 27),
                datetime(2017, 4, 29),
                datetime(2017, 3, 25),
                datetime(2017, 2, 25),
                datetime(2017, 1, 28),
            ],
        )

    def test_lwom_tue_thu(self):
        it = croniter("0 0 * * L2,L4", datetime(2016, 6, 1), ret_type=datetime)
        items = [next(it) for i in range(10)]
        self.assertListEqual(
            items,
            [
                datetime(2016, 6, 28),
                datetime(2016, 6, 30),
                datetime(2016, 7, 26),
                datetime(2016, 7, 28),
                datetime(2016, 8, 25),  # last tuesday comes before the last thursday
                datetime(2016, 8, 30),
                datetime(2016, 9, 27),
                datetime(2016, 9, 29),
                datetime(2016, 10, 25),
                datetime(2016, 10, 27),
            ],
        )

    def test_hash_mixup_all_fri_3rd_sat(self):
        # It appears that it's not possible to MIX a literal dow with a `dow#n` format
        cron_a = "0 0 * * 6#3"
        cron_b = "0 0 * * 5"
        cron_c = "0 0 * * 5,6#3"
        start = datetime(2021, 3, 1)
        expect_a = [datetime(2021, 3, 20)]
        expect_b = [
            datetime(2021, 3, 5),
            datetime(2021, 3, 12),
            datetime(2021, 3, 19),
            datetime(2021, 3, 26),
        ]
        expect_c = sorted(set(expect_a) & set(expect_b))

        def getn(expr, n):
            it = croniter(expr, start, ret_type=datetime)
            return [next(it) for i in range(n)]

        self.assertListEqual(getn(cron_a, 1), expect_a)
        self.assertListEqual(getn(cron_b, 4), expect_b)
        with self.assertRaises(CroniterUnsupportedSyntaxError):
            self.assertListEqual(getn(cron_c, 5), expect_c)

    def test_lwom_mixup_all_fri_last_sat(self):
        # Based on the failure of test_hash_mixup_all_fri_3rd_sat, we should expect this to fail too as this implementation simply extends nth_weekday_of_month
        cron_a = "0 0 * * L6"
        cron_b = "0 0 * * 5"
        cron_c = "0 0 * * 5,L6"
        start = datetime(2021, 3, 1)
        expect_a = [datetime(2021, 3, 27)]
        expect_b = [
            datetime(2021, 3, 5),
            datetime(2021, 3, 12),
            datetime(2021, 3, 19),
            datetime(2021, 3, 26),
        ]
        expect_c = sorted(set(expect_a) | set(expect_b))

        def getn(expr, n):
            it = croniter(expr, start, ret_type=datetime)
            return [next(it) for i in range(n)]

        self.assertListEqual(getn(cron_a, 1), expect_a)
        self.assertListEqual(getn(cron_b, 4), expect_b)
        with self.assertRaises(CroniterUnsupportedSyntaxError):
            self.assertListEqual(getn(cron_c, 5), expect_c)

    def test_lwom_mixup_firstlast_sat(self):
        # First saturday, last saturday
        start = datetime(2021, 3, 1)
        cron_a = "0 0 * * 6#1"
        cron_b = "0 0 * * L6"
        cron_c = "0 0 * * L6,6#1"
        expect_a = [
            datetime(2021, 3, 6),
            datetime(2021, 4, 3),
            datetime(2021, 5, 1),
        ]
        expect_b = [
            datetime(2021, 3, 27),
            datetime(2021, 4, 24),
            datetime(2021, 5, 29),
        ]
        expect_c = sorted(expect_a + expect_b)

        def getn(expr, n):
            it = croniter(expr, start, ret_type=datetime)
            return [next(it) for i in range(n)]

        self.assertListEqual(getn(cron_a, 3), expect_a)
        self.assertListEqual(getn(cron_b, 3), expect_b)
        self.assertListEqual(getn(cron_c, 6), expect_c)

    def test_lwom_mixup_4th_and_last(self):
        # 4th and last monday
        start = datetime(2021, 11, 1)
        cron_a = "0 0 * * 1#4"
        cron_b = "0 0 * * L1"
        cron_c = "0 0 * * 1#4,L1"
        expect_a = [
            datetime(2021, 11, 22),
            datetime(2021, 12, 27),
            datetime(2022, 1, 24),
        ]
        expect_b = [
            datetime(2021, 11, 29),
            datetime(2021, 12, 27),
            datetime(2022, 1, 31),
        ]
        expect_c = sorted(set(expect_a) | set(expect_b))

        def getn(expr, n):
            it = croniter(expr, start, ret_type=datetime)
            return [next(it) for i in range(n)]

        self.assertListEqual(getn(cron_a, 3), expect_a)
        self.assertListEqual(getn(cron_b, 3), expect_b)
        self.assertListEqual(getn(cron_c, 5), expect_c)

    def test_configure_second_location(self):
        base = datetime(2010, 8, 25, 0)
        itr = croniter("59 58 1 * * *", base, second_at_beginning=True)
        n = itr.get_next(datetime)
        self.assertEqual(n.year, base.year)
        self.assertEqual(n.month, base.month)
        self.assertEqual(n.day, base.day)
        self.assertEqual(n.hour, 1)
        self.assertEqual(n.minute, 58)
        self.assertEqual(n.second, 59)

    def test_nth_out_of_range(self):
        with self.assertRaises(CroniterBadCronError):
            croniter("0 0 * * 1#7")
        with self.assertRaises(CroniterBadCronError):
            croniter("0 0 * * 1#0")

    def test_last_out_of_range(self):
        with self.assertRaises(CroniterBadCronError):
            croniter("0 0 * * L-1")
        with self.assertRaises(CroniterBadCronError):
            croniter("0 0 * * L8")

    def test_question_mark(self):
        base = datetime(2010, 8, 25, 15, 56)
        itr = croniter("0 0 1 * ?", base)
        n = itr.get_next(datetime)
        self.assertEqual(n.year, base.year)
        self.assertEqual(n.month, 9)
        self.assertEqual(n.day, 1)
        self.assertEqual(n.hour, 0)
        self.assertEqual(n.minute, 0)

    def test_invalid_question_mark(self):
        self.assertRaises(CroniterBadCronError, croniter, "? * * * *")
        self.assertRaises(CroniterBadCronError, croniter, "* ? * * *")
        self.assertRaises(CroniterBadCronError, croniter, "* * ?,* * *")

    def test_year(self):
        itr1 = croniter("0 0 11 * * 0 2060", datetime(2050, 1, 1))
        n1 = itr1.get_next(datetime)
        self.assertEqual(n1.year, 2060)
        self.assertEqual(n1.month, 1)
        self.assertEqual(n1.day, 11)
        n2 = itr1.get_next(datetime)
        self.assertEqual(n2.year, 2060)
        self.assertEqual(n2.month, 2)
        self.assertEqual(n2.day, 11)

        itr2 = croniter("0 0 11 * * 0 2050-2060", datetime(2055, 1, 30))
        n3 = itr2.get_next(datetime)
        self.assertEqual(n3.year, 2055)
        self.assertEqual(n3.month, 2)
        self.assertEqual(n3.day, 11)

        itr3 = croniter("0 0 29 2 * 0 2025,2021-2023,2028", datetime(2020, 1, 1))
        n4 = itr3.get_next(datetime)
        self.assertEqual(n4.year, 2028)
        self.assertEqual(n4.month, 2)
        self.assertEqual(n4.day, 29)

        itr4 = croniter("0 0 29 2 * 0 2025,*", datetime(2020, 1, 1))
        n5 = itr4.get_next(datetime)
        self.assertEqual(n5.year, 2020)
        self.assertEqual(n5.month, 2)
        self.assertEqual(n5.day, 29)

        itr5 = croniter("0 0 29 2 * 0 2022/3", datetime(2020, 1, 1))
        n6 = itr5.get_next(datetime)
        self.assertEqual(n6.year, 2028)
        self.assertEqual(n6.month, 2)
        self.assertEqual(n6.day, 29)

        itr6 = croniter("0 0 29 2 * 0 2023-2035/3", datetime(2020, 1, 1))
        n7 = itr6.get_next(datetime)
        self.assertEqual(n7.year, 2032)
        self.assertEqual(n7.month, 2)
        self.assertEqual(n7.day, 29)

    def test_year_with_other_field(self):
        itr1 = croniter("0 0 31 11-12 * 0 2023", datetime(2000, 1, 30))
        n1 = itr1.get_next(datetime)
        self.assertEqual(n1.year, 2023)
        self.assertEqual(n1.month, 12)
        self.assertEqual(n1.day, 31)

        itr2 = croniter("0 0 31 1-2 * 0 2023-2025", datetime(2024, 12, 30))
        n2 = itr2.get_next(datetime)
        self.assertEqual(n2.year, 2025)
        self.assertEqual(n2.month, 1)
        self.assertEqual(n2.day, 31)

        itr3 = croniter("0 0 1 1 1 0 2020-2030", datetime(2000, 1, 1), day_or=False)
        n3 = itr3.get_next(datetime)
        self.assertEqual(n3.year, 2024)
        self.assertEqual(n3.month, 1)
        self.assertEqual(n3.day, 1)

    def test_year_get_prev(self):
        itr1 = croniter("0 0 11 * * 0 2000", datetime(2010, 1, 1))
        p1 = itr1.get_prev(datetime)
        self.assertEqual(p1.year, 2000)
        self.assertEqual(p1.month, 12)
        self.assertEqual(p1.day, 11)

        itr2 = croniter("0 0 11 * * 0 2000", datetime(2010, 1, 1))
        p2 = itr2.get_prev(datetime)
        self.assertEqual(p2.year, 2000)
        self.assertEqual(p2.month, 12)
        self.assertEqual(p2.day, 11)

        itr2 = croniter("0 0 29 2 * 0 2010-2030", datetime(2020, 1, 1))
        p2 = itr2.get_prev(datetime)
        self.assertEqual(p2.year, 2016)
        self.assertEqual(p2.month, 2)
        self.assertEqual(p2.day, 29)

    def test_year_match(self):
        self.assertTrue(croniter.match("* * * * * * 2024", datetime(2024, 1, 1)))
        self.assertTrue(
            croniter.match(
                "59 58 23 31 12 * 2024",
                datetime(2024, 12, 31, 23, 58, 59),
                second_at_beginning=True,
            )
        )
        self.assertFalse(croniter.match("* * * * * * 2024-2026", datetime(2027, 1, 1)))
        self.assertFalse(croniter.match("* * * * * * 2024/2", datetime(2025, 1, 1)))

    def test_year_bad_date_error(self):
        with self.assertRaises(CroniterBadDateError):
            itr = croniter("* * * * * * 2020", datetime(2030, 1, 1))
            itr.get_next()
        with self.assertRaises(CroniterBadDateError):
            itr = croniter("* * * * * * 2020", datetime(2000, 1, 1))
            itr.get_prev()
        with self.assertRaises(CroniterBadDateError):
            itr = croniter("* * 29 2 * * 2021-2023", datetime(2000, 1, 1))
            itr.get_next()

    def test_year_with_second_at_beginning(self):
        base = datetime(2050, 1, 1)
        itr = croniter("59 58 23 31 12 * 2070", base, second_at_beginning=True)
        n = itr.get_next(datetime)
        self.assertEqual(n.year, 2070)
        self.assertEqual(n.month, 12)
        self.assertEqual(n.day, 31)
        self.assertEqual(n.hour, 23)
        self.assertEqual(n.minute, 58)
        self.assertEqual(n.second, 59)

    def test_invalid_year(self):
        self.assertRaises(CroniterBadCronError, croniter, "0 0 1 * * 0 1000")
        self.assertRaises(CroniterBadCronError, croniter, "0 0 1 * * 0 99999")
        self.assertRaises(CroniterBadCronError, croniter, "0 0 1 * * 0 2070#3")

    def test_issue_47(self):
        base = datetime(2021, 3, 30, 4, 0)
        itr = croniter("0 6 30 3 *", base)
        prev1 = itr.get_prev(datetime)
        self.assertEqual(prev1.year, base.year - 1)
        self.assertEqual(prev1.month, 3)
        self.assertEqual(prev1.day, 30)
        self.assertEqual(prev1.hour, 6)
        self.assertEqual(prev1.minute, 0)

    maxDiff = None

    def test_issue_142_dow(self):
        ret = []
        for i in range(1, 31):
            ret.append(
                (
                    i,
                    croniter("35 * 1-l/8 * *", datetime(2020, 1, i), ret_type=datetime).get_next(),
                )
            )
            i += 1
        self.assertEqual(
            ret,
            [
                (1, datetime(2020, 1, 1, 0, 35)),
                (2, datetime(2020, 1, 9, 0, 35)),
                (3, datetime(2020, 1, 9, 0, 35)),
                (4, datetime(2020, 1, 9, 0, 35)),
                (5, datetime(2020, 1, 9, 0, 35)),
                (6, datetime(2020, 1, 9, 0, 35)),
                (7, datetime(2020, 1, 9, 0, 35)),
                (8, datetime(2020, 1, 9, 0, 35)),
                (9, datetime(2020, 1, 9, 0, 35)),
                (10, datetime(2020, 1, 17, 0, 35)),
                (11, datetime(2020, 1, 17, 0, 35)),
                (12, datetime(2020, 1, 17, 0, 35)),
                (13, datetime(2020, 1, 17, 0, 35)),
                (14, datetime(2020, 1, 17, 0, 35)),
                (15, datetime(2020, 1, 17, 0, 35)),
                (16, datetime(2020, 1, 17, 0, 35)),
                (17, datetime(2020, 1, 17, 0, 35)),
                (18, datetime(2020, 1, 25, 0, 35)),
                (19, datetime(2020, 1, 25, 0, 35)),
                (20, datetime(2020, 1, 25, 0, 35)),
                (21, datetime(2020, 1, 25, 0, 35)),
                (22, datetime(2020, 1, 25, 0, 35)),
                (23, datetime(2020, 1, 25, 0, 35)),
                (24, datetime(2020, 1, 25, 0, 35)),
                (25, datetime(2020, 1, 25, 0, 35)),
                (26, datetime(2020, 2, 1, 0, 35)),
                (27, datetime(2020, 2, 1, 0, 35)),
                (28, datetime(2020, 2, 1, 0, 35)),
                (29, datetime(2020, 2, 1, 0, 35)),
                (30, datetime(2020, 2, 1, 0, 35)),
            ],
        )

    def test_issue145_getnext(self):
        # Example of quarterly event cron schedule
        start = datetime(2020, 9, 24)
        cron = "0 13 8 1,4,7,10 wed"
        with self.assertRaises(CroniterBadDateError):
            it = croniter(cron, start, day_or=False, max_years_between_matches=1)
            it.get_next()
        # New functionality (0.3.35) allowing croniter to find spare matches of cron patterns across multiple years
        it = croniter(cron, start, day_or=False, max_years_between_matches=5)
        self.assertEqual(it.get_next(datetime), datetime(2025, 1, 8, 13))

    def test_explicit_year_forward(self):
        start = datetime(2020, 9, 24)
        cron = "0 13 8 1,4,7,10 wed"

        # Expect exception because no explicit range was provided.  Therefore, the caller should be made aware that an implicit limit was hit.
        ccron = croniter(cron, start, day_or=False)
        ccron._max_years_between_matches = 1
        iterable = ccron.all_next()
        with self.assertRaises(CroniterBadDateError):
            next(iterable)

        iterable = croniter(cron, start, day_or=False, max_years_between_matches=5).all_next(datetime)
        n = next(iterable)
        self.assertEqual(n, datetime(2025, 1, 8, 13))

        # If the explicitly given lookahead isn't enough to reach the next date, that's fine.  The caller specified the maximum gap, so no just stop iteration
        iterable = croniter(cron, start, day_or=False, max_years_between_matches=2).all_next(datetime)
        with self.assertRaises(StopIteration):
            next(iterable)

    def test_issue151(self):
        """."""
        self.assertTrue(croniter.match("* * * * *", datetime(2019, 1, 14, 11, 0, 59, 999999)))

    def test_overflow(self):
        """."""
        self.assertRaises(CroniterBadCronError, croniter, "0-10000000 * * * *", datetime.now())

    def test_issue156(self):
        """."""
        dt = croniter("* * * * *,0", datetime(2019, 1, 14, 11, 0, 59, 999999)).get_next()
        self.assertEqual(1547463660.0, dt)
        self.assertRaises(CroniterBadCronError, croniter, "* * * * *,b")
        dt = croniter("0 0 * * *,sat#3", datetime(2019, 1, 14, 11, 0, 59, 999999)).get_next()
        self.assertEqual(1547856000.0, dt)

    def test_confirm_sort(self):
        m, h, d, mon, dow, s = range(6)
        self.assertListEqual(croniter("0 8,22,10,23 1 1 0").expanded[h], [8, 10, 22, 23])
        self.assertListEqual(croniter("0 0 25-L 1 0").expanded[d], [25, 26, 27, 28, 29, 30, 31])
        self.assertListEqual(croniter("1 1 7,14,21,L * *").expanded[d], [7, 14, 21, "l"])
        self.assertListEqual(croniter("0 0 * * *,sat#3").expanded[dow], ["*", 6])

    def test_issue_k6(self):
        self.assertRaises(CroniterBadCronError, croniter, "0 0 0 0 0")
        self.assertRaises(CroniterBadCronError, croniter, "0 0 0 1 0")

    def test_issue_k11(self):
        now = pytz.timezone("America/New_York").localize(datetime(2019, 1, 14, 11, 0, 59))
        nextnow = croniter("* * * * * ").next(datetime, start_time=now)
        nextnow2 = croniter("* * * * * ", now).next(datetime)
        for nt in nextnow, nextnow2:
            self.assertEqual(nt.tzinfo.zone, "America/New_York")
            self.assertEqual(int(croniter._datetime_to_timestamp(nt)), 1547481660)

    def test_issue_k12(self):
        tz = pytz.timezone("Europe/Athens")
        base = datetime(2010, 1, 23, 12, 18, tzinfo=tz)
        itr = croniter("* * * * *")
        itr.set_current(start_time=base)
        n1 = itr.get_next()  # 19

        self.assertEqual(n1, datetime_to_timestamp(base) + 60)

    def test_issue_k34(self):
        # invalid cron, but should throw appropriate exception
        self.assertRaises(CroniterBadCronError, croniter, "4 0 L/2 2 0")

    def test_issue_k33(self):
        y = 2018
        # At 11:30 PM, between day 1 and 7 of the month, Monday through Friday, only in January
        ret = []
        for i in range(10):
            cron = croniter("30 23 1-7 JAN MON-FRI#1", datetime(y + i, 1, 1), ret_type=datetime)
            for j in range(7):
                d = cron.get_next()
                if d.year == y + i:
                    ret.append(d)
        rets = [
            datetime(2018, 1, 1, 23, 30),
            datetime(2018, 1, 2, 23, 30),
            datetime(2018, 1, 3, 23, 30),
            datetime(2018, 1, 4, 23, 30),
            datetime(2018, 1, 5, 23, 30),
            datetime(2019, 1, 1, 23, 30),
            datetime(2019, 1, 2, 23, 30),
            datetime(2019, 1, 3, 23, 30),
            datetime(2019, 1, 4, 23, 30),
            datetime(2019, 1, 7, 23, 30),
            datetime(2020, 1, 1, 23, 30),
            datetime(2020, 1, 2, 23, 30),
            datetime(2020, 1, 3, 23, 30),
            datetime(2020, 1, 6, 23, 30),
            datetime(2020, 1, 7, 23, 30),
            datetime(2021, 1, 1, 23, 30),
            datetime(2021, 1, 4, 23, 30),
            datetime(2021, 1, 5, 23, 30),
            datetime(2021, 1, 6, 23, 30),
            datetime(2021, 1, 7, 23, 30),
            datetime(2022, 1, 3, 23, 30),
            datetime(2022, 1, 4, 23, 30),
            datetime(2022, 1, 5, 23, 30),
            datetime(2022, 1, 6, 23, 30),
            datetime(2022, 1, 7, 23, 30),
            datetime(2023, 1, 2, 23, 30),
            datetime(2023, 1, 3, 23, 30),
            datetime(2023, 1, 4, 23, 30),
            datetime(2023, 1, 5, 23, 30),
            datetime(2023, 1, 6, 23, 30),
            datetime(2024, 1, 1, 23, 30),
            datetime(2024, 1, 2, 23, 30),
            datetime(2024, 1, 3, 23, 30),
            datetime(2024, 1, 4, 23, 30),
            datetime(2024, 1, 5, 23, 30),
            datetime(2025, 1, 1, 23, 30),
            datetime(2025, 1, 2, 23, 30),
            datetime(2025, 1, 3, 23, 30),
            datetime(2025, 1, 6, 23, 30),
            datetime(2025, 1, 7, 23, 30),
            datetime(2026, 1, 1, 23, 30),
            datetime(2026, 1, 2, 23, 30),
            datetime(2026, 1, 5, 23, 30),
            datetime(2026, 1, 6, 23, 30),
            datetime(2026, 1, 7, 23, 30),
            datetime(2027, 1, 1, 23, 30),
            datetime(2027, 1, 4, 23, 30),
            datetime(2027, 1, 5, 23, 30),
            datetime(2027, 1, 6, 23, 30),
            datetime(2027, 1, 7, 23, 30),
        ]
        self.assertEqual(ret, rets)
        croniter.expand("30 6 1-7 MAY MON#1")

    def test_bug_62_leap(self):
        ret = croniter("15 22 29 2 *", datetime(2024, 2, 29)).get_prev(datetime)
        self.assertEqual(ret, datetime(2020, 2, 29, 22, 15))

    def test_expand_from_start_time_minute(self):
        seven_seconds_interval_pattern = "*/7 * * * *"
        ret1 = croniter(
            seven_seconds_interval_pattern,
            start_time=datetime(2024, 7, 11, 10, 11),
            expand_from_start_time=True,
        ).get_next(datetime)
        self.assertEqual(ret1, datetime(2024, 7, 11, 10, 18))

        ret2 = croniter(
            seven_seconds_interval_pattern,
            start_time=datetime(2024, 7, 11, 10, 12),
            expand_from_start_time=True,
        ).get_next(datetime)
        self.assertEqual(ret2, datetime(2024, 7, 11, 10, 19))

        ret3 = croniter(
            seven_seconds_interval_pattern,
            start_time=datetime(2024, 7, 11, 10, 11),
            expand_from_start_time=True,
        ).get_prev(datetime)
        self.assertEqual(ret3, datetime(2024, 7, 11, 10, 4))

        ret4 = croniter(
            seven_seconds_interval_pattern,
            start_time=datetime(2024, 7, 11, 10, 12),
            expand_from_start_time=True,
        ).get_prev(datetime)
        self.assertEqual(ret4, datetime(2024, 7, 11, 10, 5))

    def test_expand_from_start_time_hour(self):
        seven_hours_interval_pattern = "0 */7 * * *"
        ret1 = croniter(
            seven_hours_interval_pattern,
            start_time=datetime(2024, 7, 11, 15, 0),
            expand_from_start_time=True,
        ).get_next(datetime)
        self.assertEqual(ret1, datetime(2024, 7, 11, 22, 0))

        ret2 = croniter(
            seven_hours_interval_pattern,
            start_time=datetime(2024, 7, 11, 16, 0),
            expand_from_start_time=True,
        ).get_next(datetime)
        self.assertEqual(ret2, datetime(2024, 7, 11, 23, 0))

        ret3 = croniter(
            seven_hours_interval_pattern,
            start_time=datetime(2024, 7, 11, 15, 0),
            expand_from_start_time=True,
        ).get_prev(datetime)
        self.assertEqual(ret3, datetime(2024, 7, 11, 8, 0))

        ret4 = croniter(
            seven_hours_interval_pattern,
            start_time=datetime(2024, 7, 11, 16, 0),
            expand_from_start_time=True,
        ).get_prev(datetime)
        self.assertEqual(ret4, datetime(2024, 7, 11, 9, 0))

    def test_expand_from_start_time_date(self):
        five_days_interval_pattern = "0 0 */5 * *"
        ret1 = croniter(
            five_days_interval_pattern,
            start_time=datetime(2024, 7, 12),
            expand_from_start_time=True,
        ).get_next(datetime)
        self.assertEqual(ret1, datetime(2024, 7, 17))

        ret2 = croniter(
            five_days_interval_pattern,
            start_time=datetime(2024, 7, 13),
            expand_from_start_time=True,
        ).get_next(datetime)
        self.assertEqual(ret2, datetime(2024, 7, 18))

        ret3 = croniter(
            five_days_interval_pattern,
            start_time=datetime(2024, 7, 12),
            expand_from_start_time=True,
        ).get_prev(datetime)
        self.assertEqual(ret3, datetime(2024, 7, 7))

        ret4 = croniter(
            five_days_interval_pattern,
            start_time=datetime(2024, 7, 13),
            expand_from_start_time=True,
        ).get_prev(datetime)
        self.assertEqual(ret4, datetime(2024, 7, 8))

    def test_expand_from_start_time_month(self):
        three_monts_interval_pattern = "0 0 1 */3 *"
        ret1 = croniter(
            three_monts_interval_pattern,
            start_time=datetime(2024, 7, 1),
            expand_from_start_time=True,
        ).get_next(datetime)
        self.assertEqual(ret1, datetime(2024, 10, 1))

        ret2 = croniter(
            three_monts_interval_pattern,
            start_time=datetime(2024, 8, 1),
            expand_from_start_time=True,
        ).get_next(datetime)
        self.assertEqual(ret2, datetime(2024, 11, 1))

        ret3 = croniter(
            three_monts_interval_pattern,
            start_time=datetime(2024, 7, 1),
            expand_from_start_time=True,
        ).get_prev(datetime)
        self.assertEqual(ret3, datetime(2024, 4, 1))

        ret4 = croniter(
            three_monts_interval_pattern,
            start_time=datetime(2024, 8, 1),
            expand_from_start_time=True,
        ).get_prev(datetime)
        self.assertEqual(ret4, datetime(2024, 5, 1))

    def test_expand_from_start_time_day_of_week(self):
        three_monts_interval_pattern = "0 0 * * */2"
        ret1 = croniter(
            three_monts_interval_pattern,
            start_time=datetime(2024, 7, 10),
            expand_from_start_time=True,
        ).get_next(datetime)
        self.assertEqual(ret1, datetime(2024, 7, 12))

        ret2 = croniter(
            three_monts_interval_pattern,
            start_time=datetime(2024, 7, 11),
            expand_from_start_time=True,
        ).get_next(datetime)
        self.assertEqual(ret2, datetime(2024, 7, 13))

        ret3 = croniter(
            three_monts_interval_pattern,
            start_time=datetime(2024, 7, 10),
            expand_from_start_time=True,
        ).get_prev(datetime)
        self.assertEqual(ret3, datetime(2024, 7, 8))

        ret4 = croniter(
            three_monts_interval_pattern,
            start_time=datetime(2024, 7, 11),
            expand_from_start_time=True,
        ).get_prev(datetime)
        self.assertEqual(ret4, datetime(2024, 7, 9))

    def test_get_next_fails_with_expand_from_start_time_true(self):
        expanded_croniter = croniter("0 0 */5 * *", expand_from_start_time=True)
        self.assertRaises(
            ValueError,
            expanded_croniter.get_next,
            datetime,
            start_time=datetime(2024, 7, 12),
        )

    def test_get_next_update_current(self):
        cron = croniter("* * * * * *")

        cron.set_current(datetime(2024, 7, 12), force=True)
        retn = [(cron.get_next(datetime), cron.get_current(datetime)) for a in range(3)]
        self.assertEqual(
            retn,
            [
                (datetime(2024, 7, 12, 0, 0, 1), datetime(2024, 7, 12, 0, 0, 1)),
                (datetime(2024, 7, 12, 0, 0, 2), datetime(2024, 7, 12, 0, 0, 2)),
                (datetime(2024, 7, 12, 0, 0, 3), datetime(2024, 7, 12, 0, 0, 3)),
            ],
        )

        retns = (
            cron.get_next(datetime, start_time=datetime(2024, 7, 12)),
            cron.get_current(datetime),
        )
        self.assertEqual(retn[0], retns)

        cron.set_current(datetime(2024, 7, 12), force=True)
        retp = [(cron.get_prev(datetime), cron.get_current(datetime)) for a in range(3)]
        self.assertEqual(
            retp,
            [
                (datetime(2024, 7, 11, 23, 59, 59), datetime(2024, 7, 11, 23, 59, 59)),
                (datetime(2024, 7, 11, 23, 59, 58), datetime(2024, 7, 11, 23, 59, 58)),
                (datetime(2024, 7, 11, 23, 59, 57), datetime(2024, 7, 11, 23, 59, 57)),
            ],
        )

        retps = (
            cron.get_prev(datetime, start_time=datetime(2024, 7, 12)),
            cron.get_current(datetime),
        )
        self.assertEqual(retp[0], retps)

        cron.set_current(datetime(2024, 7, 12), force=True)
        r = cron.all_next(datetime)
        retan = [(next(r), cron.get_current(datetime)) for a in range(3)]

        r = cron.all_next(datetime, start_time=datetime(2024, 7, 12))
        retans = [(next(r), cron.get_current(datetime)) for a in range(3)]

        cron.set_current(datetime(2024, 7, 12), force=True)
        r = cron.all_prev(datetime)
        retap = [(next(r), cron.get_current(datetime)) for a in range(3)]

        r = cron.all_prev(datetime, start_time=datetime(2024, 7, 12))
        retaps = [(next(r), cron.get_current(datetime)) for a in range(3)]

        self.assertEqual(retp, retap)
        self.assertEqual(retp, retaps)
        self.assertEqual(retn, retan)
        self.assertEqual(retn, retans)

        cron.set_current(datetime(2024, 7, 12), force=True)
        uretn = [(cron.get_next(datetime, update_current=False), cron.get_current(datetime)) for a in range(3)]
        self.assertEqual(
            uretn,
            [
                (datetime(2024, 7, 12, 0, 0, 1), datetime(2024, 7, 12, 0, 0)),
                (datetime(2024, 7, 12, 0, 0, 1), datetime(2024, 7, 12, 0, 0)),
                (datetime(2024, 7, 12, 0, 0, 1), datetime(2024, 7, 12, 0, 0)),
            ],
        )

        cron.set_current(datetime(2024, 7, 12), force=True)
        uretp = [(cron.get_prev(datetime, update_current=False), cron.get_current(datetime)) for a in range(3)]
        self.assertEqual(
            uretp,
            [
                (datetime(2024, 7, 11, 23, 59, 59), datetime(2024, 7, 12, 0, 0)),
                (datetime(2024, 7, 11, 23, 59, 59), datetime(2024, 7, 12, 0, 0)),
                (datetime(2024, 7, 11, 23, 59, 59), datetime(2024, 7, 12, 0, 0)),
            ],
        )

        cron.set_current(datetime(2024, 7, 12), force=True)
        r = cron.all_next(datetime, update_current=False)
        uretan = [(next(r), cron.get_current(datetime)) for a in range(3)]

        cron.set_current(datetime(2024, 7, 12), force=True)
        r = cron.all_prev(datetime, update_current=False)
        uretap = [(next(r), cron.get_current(datetime)) for a in range(3)]

        self.assertEqual(uretp, uretap)
        self.assertEqual(uretn, uretan)

    def test_issue_2038y(self):
        base = datetime(2040, 1, 1, 0, 0)
        itr = croniter("* * * * *", base)
        try:
            itr.get_next()
        except OverflowError:
            raise Exception("overflow not fixed!")

    def test_revert_issue_90_aka_support_DOW7(self):
        self.assertTrue(croniter.is_valid("* * * * 1-7"))
        self.assertTrue(croniter.is_valid("* * * * 7"))

    def test_sunday_ranges_to(self):
        self._test_sunday_ranges(
            "0 0 * * Sun-Sun",
            # fmt: off
            [
                2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19,
                20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31,
            ],
            # fmt: on
        )

        self._test_sunday_ranges(
            "0 0 * * Mon-Sun",
            # fmt: off
            [
                2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19,
                20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31,
            ],
            # fmt: on
        )

        self._test_sunday_ranges(
            "0 0 * * Tue-Sun",
            # fmt: off
            [
                2, 3, 4, 5, 6, 7, 9, 10, 11, 12, 13, 14, 16, 17, 18, 19, 20, 21,
                23, 24, 25, 26, 27, 28, 30, 31, 1, 2, 3, 4,
            ],
            # fmt: on
        )

        self._test_sunday_ranges(
            "0 0 * * Wed-Sun",
            # fmt: off
            [
                3, 4, 5, 6, 7, 10, 11, 12, 13, 14, 17, 18, 19, 20, 21, 24, 25,
                26, 27, 28, 31, 1, 2, 3, 4, 7, 8, 9, 10, 11,
            ],
            # fmt: on
        )

        self._test_sunday_ranges(
            "0 0 * * Thu-Sun",
            # fmt: off
            [
                4, 5, 6, 7, 11, 12, 13, 14, 18, 19, 20, 21, 25, 26, 27, 28, 1,
                2, 3, 4, 8, 9, 10, 11, 15, 16, 17, 18, 22, 23,
            ],
            # fmt: on
        )

        self._test_sunday_ranges(
            "0 0 * * Fri-Sun",
            # fmt: off
            [
                5, 6, 7, 12, 13, 14, 19, 20, 21, 26, 27, 28, 2, 3, 4, 9, 10, 11,
                16, 17, 18, 23, 24, 25, 1, 2, 3, 8, 9, 10,
            ],
            # fmt: on
        )

        self._test_sunday_ranges(
            "0 0 * * Sat-Sun",
            # fmt: off
            [
                6, 7, 13, 14, 20, 21, 27, 28, 3, 4, 10, 11, 17, 18, 24, 25, 2, 3,
                9, 10, 16, 17, 23, 24, 30, 31, 6, 7, 13, 14,
            ],
            # fmt: on
        )

    def test_sunday_ranges_from(self):
        self._test_sunday_ranges(
            "0 0 * * Sun-Mon",
            # fmt: off
            [
                7, 8, 14, 15, 21, 22, 28, 29, 4, 5, 11, 12, 18, 19, 25, 26, 3, 4,
                10, 11, 17, 18, 24, 25, 31, 1, 7, 8, 14, 15,
            ],
            # fmt: on
        )

        self._test_sunday_ranges(
            "0 0 * * Sun-Tue",
            # fmt: off
            [
                2, 7, 8, 9, 14, 15, 16, 21, 22, 23, 28, 29, 30, 4, 5, 6, 11, 12,
                13, 18, 19, 20, 25, 26, 27, 3, 4, 5, 10, 11,
            ],
            # fmt: on
        )

        self._test_sunday_ranges(
            "0 0 * * Sun-Wed",
            # fmt: off
            [
                2, 3, 7, 8, 9, 10, 14, 15, 16, 17, 21, 22, 23, 24, 28, 29, 30, 31,
                4, 5, 6, 7, 11, 12, 13, 14, 18, 19, 20, 21,
            ],
            # fmt: on
        )

        self._test_sunday_ranges(
            "0 0 * * Sun-Thu",
            # fmt: off
            [
                2, 3, 4, 7, 8, 9, 10, 11, 14, 15, 16, 17, 18, 21, 22, 23, 24, 25,
                28, 29, 30, 31, 1, 4, 5, 6, 7, 8, 11, 12,
            ],
            # fmt: on
        )

        self._test_sunday_ranges(
            "0 0 * * Sun-Fri",
            # fmt: off
            [
                2, 3, 4, 5, 7, 8, 9, 10, 11, 12, 14, 15, 16, 17, 18, 19, 21, 22,
                23, 24, 25, 26, 28, 29, 30, 31, 1, 2, 4, 5,
            ],
            # fmt: on
        )

        self._test_sunday_ranges(
            "0 0 * * Sun-Sat",
            # fmt: off
            [
                2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19,
                20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31,
            ],
            # fmt: on
        )

        self._test_sunday_ranges(
            "0 0 * * Thu-Tue/2",
            # fmt: off
            [
                2, 4, 6, 9, 11, 13, 16, 18, 20, 23, 25, 27, 30, 1, 3, 6, 8, 10,
                13, 15, 17, 20, 22, 24, 27, 29, 2, 5, 7, 9,
            ],
            # fmt: on
        )

        self._test_sunday_ranges(
            "0 0 * * Thu-Tue/3",
            # fmt: off
            [
                4, 7, 11, 14, 18, 21, 25, 28, 1, 4, 8, 11, 15, 18, 22, 25, 29, 3,
                7, 10, 14, 17, 21, 24, 28, 31, 4, 7, 11, 14,
            ],
            # fmt: on
        )

    def test_mth_ranges_from(self):
        self._test_mth_cron_ranges(
            "0 0 1 Jan-Dec *",
            # fmt: off
            [
                "24 2", "24 3", "24 4", "24 5", "24 6", "24 7", "24 8", "24 9",
                "24 10", "24 11", "24 12", "25 1", "25 2", "25 3", "25 4", "25 5",
            ],
            # fmt: on
        )
        self._test_mth_cron_ranges(
            "0 0 1 Nov-Mar *",
            # fmt: off
            [
                "24 2", "24 3", "24 11", "24 12", "25 1", "25 2", "25 3", "25 11",
                "25 12", "26 1", "26 2", "26 3", "26 11", "26 12", "27 1", "27 2",
            ],
            # fmt: on
        )
        self._test_mth_cron_ranges(
            "0 0 1 Apr-Feb *",
            # fmt: off
            [
                "24 2", "24 4", "24 5", "24 6", "24 7", "24 8", "24 9", "24 10",
                "24 11", "24 12", "25 1", "25 2", "25 4", "25 5", "25 6", "25 7",
            ],
            # fmt: on
        )
        self._test_mth_cron_ranges(
            "0 0 1 Apr-Mar/3 *",
            # fmt: off
            [
                "24 4", "24 7", "24 10", "25 1", "25 4", "25 7", "25 10", "26 1",
                "26 4", "26 7", "26 10", "27 1", "27 4", "27 7", "27 10", "28 1",
            ],
            # fmt: on
        )
        self._test_mth_cron_ranges(
            "0 0 1 Apr-Mar/2 *",
            # fmt: off
            [
                "24 3", "24 4", "24 6", "24 8", "24 10", "24 12", "25 3", "25 4",
                "25 6", "25 8", "25 10", "25 12", "26 3", "26 4", "26 6", "26 8",
            ],
            # fmt: on
        )
        self._test_mth_cron_ranges(
            "0 0 1 Jan-Aug/2 *",
            # fmt: off
            [
                "24 3", "24 5", "24 7", "25 1", "25 3", "25 5", "25 7", "26 1",
                "26 3", "26 5", "26 7", "27 1", "27 3", "27 5", "27 7", "28 1",
            ],
            # fmt: on
        )
        self._test_mth_cron_ranges(
            "0 0 1 Jan-Aug/4 *",
            # fmt: off
            [
                "24 5", "25 1", "25 5", "26 1", "26 5", "27 1", "27 5", "28 1",
                "28 5", "29 1", "29 5", "30 1", "30 5", "31 1", "31 5", "32 1",
            ],
            # fmt: on
        )

    def _test_cron_ranges(self, expr, wanted, generator=None, loops=None, start=None, is_prev=None):
        rets = (generator or gen_x_results)(
            expr, loops=loops or 10, start=start or datetime(2024, 1, 1), is_prev=is_prev
        )
        for ret in rets:
            self.assertEqual(wanted, ret)

    def _test_mth_cron_ranges(self, expr, wanted, loops=None, start=None, is_prev=None):
        return self._test_cron_ranges(
            expr,
            wanted,
            generator=gen_x_mth_results,
            loops=loops or 16,
            start=start,
            is_prev=is_prev,
        )

    def _test_sunday_ranges(self, expr, wanted, loops=None, start=None, is_prev=None):
        return self._test_cron_ranges(
            expr,
            wanted,
            generator=gen_all_sunday_forms,
            loops=loops or 30,
            start=start,
            is_prev=is_prev,
        )


def gen_x_mth_results(expr, loops=None, start=None, is_prev=None):
    start = start or datetime(2024, 1, 1)
    cron = croniter(expr, start_time=start)
    n = cron.get_prev if is_prev else cron.get_next
    return [["{0} {1}".format(str(a.year)[-2:], a.month) for a in [n(datetime) for i in range(loops or 16)]]]


def gen_x_results(expr, loops=None, start=None, is_prev=None):
    start = start or datetime(2024, 1, 1)
    cron = croniter(expr, start_time=start)
    n = cron.get_prev if is_prev else cron.get_next
    return [[a.isoformat() for a in [n(datetime) for i in range(loops or 30)]]]


def gen_all_sunday_forms(expr, loops=None, start=None, is_prev=None):
    start = start or datetime(2024, 1, 1)
    cron = croniter(expr, start_time=start)
    n = cron.get_prev if is_prev else cron.get_next
    ret1 = [a.day for a in [n(datetime) for i in range(loops or 30)]]
    cron = croniter(expr.lower().replace("sun", "7"), start_time=start)
    n = cron.get_prev if is_prev else cron.get_next
    ret2 = [a.day for a in [n(datetime) for i in range(loops or 30)]]
    cron = croniter(expr.lower().replace("sun", "0"), start_time=start)
    n = cron.get_prev if is_prev else cron.get_next
    ret3 = [a.day for a in [n(datetime) for i in range(loops or 30)]]
    return ret1, ret2, ret3


if __name__ == "__main__":
    unittest.main()
