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"""Test datetime parser.
Part of the tagit test suite.
A copy of the license is provided with the project.
Author: Matthias Baumgartner, 2022
"""
# standard imports
import unittest
from datetime import date as ddate
from datetime import time as dtime
from datetime import datetime
# external imports
from pyparsing import ParseException
# tagit imports
from tagit.utils import errors, Struct
# objects to test
#from tagit.parsing.datefmt import DatefmtError, DateParserError, TimeParserError, DateFormatError, guess_date, guess_time, guess_datetime, increment, PRIORITIES_US, DF
from tagit.parsing.datefmt import guess_date, guess_time, PRIORITIES_US, DateParserError, DateFormatError, TimeParserError, guess_datetime, DF, parse_datetime, increment, DateTimeParser
## code ##
class TestGuessDatetime(unittest.TestCase):
def test_parse_datetime(self):
parse_datetime = DateTimeParser()
cyear = ddate.today().year
cmon = ddate.today().month
cday = ddate.today().day
# date only: vary number formats
self.assertEqual(parse_datetime('3.4.12'), datetime(2012, 4, 3))
self.assertEqual(parse_datetime('15.8.19'), datetime(2019, 8, 15))
self.assertEqual(parse_datetime('8.11.98'), datetime(1998, 11, 8))
self.assertEqual(parse_datetime('10.11.12'), datetime(2012, 11, 10))
self.assertEqual(parse_datetime('3.4.1912'), datetime(1912, 4, 3))
self.assertEqual(parse_datetime('15.8.1919'), datetime(1919, 8, 15))
self.assertEqual(parse_datetime('8.11.1998'), datetime(1998, 11, 8))
self.assertEqual(parse_datetime('10.11.1912'), datetime(1912, 11, 10))
self.assertEqual(parse_datetime('8.1998'), datetime(1998, 8, 1))
self.assertEqual(parse_datetime('10.1912'), datetime(1912, 10, 1))
self.assertRaises(errors.ParserError, parse_datetime, 'ab.cd.ef')
self.assertRaises(errors.ParserError, parse_datetime, '123.123.2000')
self.assertRaises(errors.ParserError, parse_datetime, '.123.2000')
self.assertRaises(errors.ParserError, parse_datetime, '123..2000')
self.assertRaises(errors.ParserError, parse_datetime, '12.12.20001')
# date only: vary order (three-part)
self.assertEqual(parse_datetime('15.98.8'), datetime(1998, 8, 15))
self.assertEqual(parse_datetime('8.98.15'), datetime(1998, 8, 15))
self.assertEqual(parse_datetime('8.15.98'), datetime(1998, 8, 15))
self.assertEqual(parse_datetime('15.8.98'), datetime(1998, 8, 15))
self.assertEqual(parse_datetime('98.8.15'), datetime(1998, 8, 15))
self.assertEqual(parse_datetime('98.15.8'), datetime(1998, 8, 15))
# date only: vary order (two-part)
self.assertEqual(parse_datetime('15.98'), datetime(1998, 1, 15))
self.assertEqual(parse_datetime('08.98'), datetime(1998, 8, 1))
self.assertEqual(parse_datetime('08.15'), datetime(2015, 8, 1))
self.assertEqual(parse_datetime('15.08'), datetime(cyear, 8, 15))
self.assertEqual(parse_datetime('98.08'), datetime(1998, 8, 1))
self.assertEqual(parse_datetime('98.15'), datetime(1998, 1, 15))
# date only: one part
self.assertEqual(parse_datetime('1998'), datetime(1998, 1, 1))
# date only: literal month
self.assertEqual(parse_datetime('98.April'), datetime(1998, 4, 1))
# FIXME: Allow more patterns
#self.assertEqual(parse_datetime('98, April'), datetime(1998, 4, 1))
#self.assertEqual(parse_datetime('April, 15'), datetime(2015, 4, 1))
# date only: day with suffix
#self.assertEqual(parse_datetime('10th 2000'), datetime(2000, 1, 10))
#self.assertEqual(parse_datetime('2000, 10th'), datetime(2000, 1, 10))
#self.assertEqual(parse_datetime('April, 10th'), datetime(cyear, 4, 10))
#self.assertEqual(parse_datetime('April 10th'), datetime(cyear, 4, 10))
#self.assertEqual(parse_datetime('10th April'), datetime(cyear, 4, 10))
# date only: of notation
#self.assertEqual(parse_datetime('10th of April, 2000'), datetime(2000, 4, 10))
#self.assertEqual(parse_datetime('10th of April'), datetime(cyear, 4, 10))
#self.assertEqual(parse_datetime('10 of 04'), datetime(cyear, 4, 10))
# invalid ranges
self.assertRaises(DateParserError, parse_datetime, '10.93.2013')
self.assertRaises(DateParserError, parse_datetime, '48.10.2013')
self.assertRaises(DateParserError, parse_datetime, '48.93.2013')
self.assertRaises(DateParserError, parse_datetime, "52.74")
# time only: am/pm
self.assertEqual(parse_datetime("10 am"), datetime(1970, 1, 1, 10))
self.assertEqual(parse_datetime("10 pm"), datetime(1970, 1, 1, 22))
self.assertEqual(parse_datetime("10:02 pm"), datetime(1970, 1, 1, 22, 2))
self.assertEqual(parse_datetime("14 am"), datetime(1970, 1, 1, 14))
self.assertRaises(TimeParserError, parse_datetime, "14 pm")
# time only: 24hrs format
self.assertEqual(parse_datetime("1:2"), datetime(1970, 1, 1, 1, 2))
self.assertEqual(parse_datetime("12:34"), datetime(1970, 1, 1, 12, 34))
self.assertEqual(parse_datetime("12:34:54"), datetime(1970, 1, 1, 12, 34, 54))
self.assertEqual(parse_datetime("12:34:54.123"), datetime(1970, 1, 1, 12, 34, 54, 123000))
self.assertEqual(parse_datetime("1:2:3.4"), datetime(1970, 1, 1, 1, 2, 3, 400000))
self.assertRaises(errors.ParserError, parse_datetime, '84:12')
self.assertRaises(errors.ParserError, parse_datetime, '12:75')
self.assertRaises(errors.ParserError, parse_datetime, '12:13:84')
# time only: HH:MM
self.assertEqual(parse_datetime("54:34"), datetime(1970, 1, 1, 0, 54, 34))
# time only: invalid format
self.assertRaises(errors.ParserError, parse_datetime, '12:')
# date and time
self.assertEqual(parse_datetime("12:34 18.05.2012"), datetime(2012, 5, 18, 12, 34))
self.assertEqual(parse_datetime("12:34, 18.05.2012"), datetime(2012, 5, 18, 12, 34))
self.assertEqual(parse_datetime("18.05.2012 12:34"), datetime(2012, 5, 18, 12, 34))
self.assertEqual(parse_datetime("18.05.2012, 12:34"), datetime(2012, 5, 18, 12, 34))
self.assertEqual(parse_datetime("2012, 12:34"), datetime(2012, 1, 1, 12, 34))
self.assertEqual(parse_datetime("2012, 12am"), datetime(2012, 1, 1, 12))
self.assertRaises(errors.ParserError, parse_datetime, '12.34 18:05:2012')
# invalid args
self.assertRaises(errors.ParserError, parse_datetime, '')
def test_guess_date(self):
this_year = ddate.today().year
# some unambiguous formats
self.assertEqual(guess_date('18 . 05 . 2012'.split()), (ddate(2012, 5, 18), 'DMY'))
self.assertEqual(guess_date('18 5 2012'.split()), (ddate(2012, 5, 18), 'DMY'))
self.assertEqual(guess_date('2012 , 05 , 18'.split()), (ddate(2012, 5, 18), 'YMD'))
self.assertEqual(guess_date('2012 5 18'.split()), (ddate(2012, 5, 18), 'YMD'))
self.assertEqual(guess_date('18 5 2004'.split()), (ddate(2004, 5, 18), 'DMY'))
self.assertEqual(guess_date('2004 5 18'.split()), (ddate(2004, 5, 18), 'YMD'))
self.assertEqual(guess_date('10 11 12'.split()), (ddate(2012, 11, 10), 'DMY'))
self.assertEqual(guess_date('10 11 12'.split(), priorities=PRIORITIES_US),
(ddate(2012, 10, 11), 'MDY'))
self.assertEqual(guess_date('2012 04 05'.split()), (ddate(2012, 4, 5), 'YMD'))
self.assertEqual(guess_date('2012 4 5'.split()), (ddate(2012, 4, 5), 'YMD'))
self.assertEqual(guess_date('2012 May , 4th'.split()), (ddate(2012, 5, 4), 'YMD'))
self.assertEqual(guess_date('4 5 2012'.split()), (ddate(2012, 5, 4), 'DMY'))
self.assertEqual(guess_date('4th of May 2012'.split()), (ddate(2012, 5, 4), 'DMY'))
self.assertEqual(guess_date('2012 4th of May'.split()), (ddate(2012, 5, 4), 'YDM'))
# three-part format
# unambiguous MD ranges, full year
self.assertEqual(guess_date('28 11 2018'.split()), (ddate(2018, 11, 28), 'DMY'))
self.assertEqual(guess_date('28 2018 11'.split()), (ddate(2018, 11, 28), 'DYM'))
self.assertEqual(guess_date('11 28 2018'.split()), (ddate(2018, 11, 28), 'MDY'))
self.assertEqual(guess_date('11 2018 28'.split()), (ddate(2018, 11, 28), 'MYD'))
self.assertEqual(guess_date('2018 11 28'.split()), (ddate(2018, 11, 28), 'YMD'))
self.assertEqual(guess_date('2018 28 11'.split()), (ddate(2018, 11, 28), 'YDM'))
# unambiguous MDY ranges
self.assertEqual(guess_date('28 11 98'.split()), (ddate(1998, 11, 28), 'DMY'))
self.assertEqual(guess_date('28 98 11'.split()), (ddate(1998, 11, 28), 'DYM'))
self.assertEqual(guess_date('11 28 98'.split()), (ddate(1998, 11, 28), 'MDY'))
self.assertEqual(guess_date('11 98 28'.split()), (ddate(1998, 11, 28), 'MYD'))
self.assertEqual(guess_date('98 11 28'.split()), (ddate(1998, 11, 28), 'YMD'))
self.assertEqual(guess_date('98 28 11'.split()), (ddate(1998, 11, 28), 'YDM'))
# explicit YMD
self.assertEqual(guess_date('10th of April 2018'.split()), (ddate(2018, 4, 10), 'DMY'))
self.assertEqual(guess_date('April 10th 98'.split()), (ddate(1998, 4, 10), 'MDY'))
self.assertEqual(guess_date('98 April 10th'.split()), (ddate(1998, 4, 10), 'YMD'))
self.assertEqual(guess_date('2018 10th of April'.split()), (ddate(2018, 4, 10), 'YDM'))
self.assertEqual(guess_date('2018 10 of 04'.split()), (ddate(2018, 4, 10), 'YDM'))
# explicit MY
self.assertEqual(guess_date('2018 10 April'.split()), (ddate(2018, 4, 10), 'YDM'))
self.assertEqual(guess_date('2018 April 10'.split()), (ddate(2018, 4, 10), 'YMD'))
self.assertEqual(guess_date('April 10 2018'.split()), (ddate(2018, 4, 10), 'MDY'))
# explicit DY
self.assertEqual(guess_date('10th 04 98'.split()), (ddate(1998, 4, 10), 'DMY'))
self.assertEqual(guess_date('2018 10th 04'.split()), (ddate(2018, 4, 10), 'YDM'))
self.assertEqual(guess_date('2018 04 10th'.split()), (ddate(2018, 4, 10), 'YMD'))
# explicit DM
self.assertEqual(guess_date('10th April 10'.split()), (ddate(2010, 4, 10), 'DMY'))
self.assertEqual(guess_date('10 10th April'.split()), (ddate(2010, 4, 10), 'YDM'))
self.assertEqual(guess_date('10 April 10th'.split()), (ddate(2010, 4, 10), 'YMD'))
# ambiguous formats: explicit Y
self.assertEqual(guess_date('2018 04 08'.split()), (ddate(2018, 4, 8), 'YMD'))
self.assertEqual(guess_date('04 2018 08'.split()), (ddate(2018, 8, 4), 'DYM'))
self.assertEqual(guess_date('08 04 2018'.split()), (ddate(2018, 4, 8), 'DMY'))
self.assertEqual(guess_date('4 8 11'.split()), (ddate(2011, 8, 4), 'DMY'))
# ambiguous formats: explicit D
self.assertEqual(guess_date('10 4th 11'.split()), (ddate(2011, 10, 4), 'MDY'))
self.assertEqual(guess_date('11 10 4th'.split()), (ddate(2011, 10, 4), 'YMD'))
self.assertEqual(guess_date('4th 11 10'.split()), (ddate(2010, 11, 4), 'DMY'))
self.assertEqual(guess_date('4th 10 11'.split()), (ddate(2011, 10, 4), 'DMY'))
# ambiguous formats: explicit M
self.assertEqual(guess_date('April 21 08'.split()), (ddate(2008, 4, 21), 'MDY'))
self.assertEqual(guess_date('08 April 21'.split()), (ddate(2021, 4, 8), 'DMY'))
self.assertEqual(guess_date('21 08 April'.split()), (ddate(2021, 4, 8), 'YDM'))
# fully ambiguous
self.assertEqual(guess_date('04 08 10'.split()), (ddate(2010, 8, 4), 'DMY'))
# errors
self.assertRaises(DateParserError, guess_date, '2012 98 10'.split())
self.assertRaises(DateParserError, guess_date, 'April 98 April'.split())
self.assertRaises(DateParserError, guess_date, '10th 98 29'.split())
# two-part format
# unambiguous DY ranges
self.assertEqual(guess_date('28 98'.split()), (ddate(1998, 1, 28), 'DY'))
self.assertEqual(guess_date('98 28'.split()), (ddate(1998, 1, 28), 'YD'))
self.assertEqual(guess_date('2010 28'.split()), (ddate(2010, 1, 28), 'YD'))
self.assertEqual(guess_date('28 2010'.split()), (ddate(2010, 1, 28), 'DY'))
# explicit DY
self.assertEqual(guess_date('28th 2010'.split()), (ddate(2010, 1, 28), 'DY'))
self.assertEqual(guess_date('2010 28th'.split()), (ddate(2010, 1, 28), 'YD'))
# explicit MY
self.assertEqual(guess_date('2010 April'.split()), (ddate(2010, 4, 1), 'YM'))
self.assertEqual(guess_date('April 2010'.split()), (ddate(2010, 4, 1), 'MY'))
# explicit DM
self.assertEqual(guess_date('April 10th'.split()), (ddate(this_year, 4, 10), 'MD'))
self.assertEqual(guess_date('10th April'.split()), (ddate(this_year, 4, 10), 'DM'))
self.assertEqual(guess_date('10th of April'.split()), (ddate(this_year, 4, 10), 'DM'))
self.assertEqual(guess_date('10 of 04'.split()), (ddate(this_year, 4, 10), 'DM'))
self.assertEqual(guess_date('10th 4'.split()), (ddate(this_year, 4, 10), 'DM'))
# explicit Y
self.assertEqual(guess_date('2010 04'.split()), (ddate(2010, 4, 1), 'YM'))
self.assertEqual(guess_date('04 2010'.split()), (ddate(2010, 4, 1), 'MY'))
self.assertEqual(guess_date('04 98'.split()), (ddate(1998, 4, 1), 'MY'))
self.assertEqual(guess_date('98 04'.split()), (ddate(1998, 4, 1), 'YM'))
# explicit M
self.assertEqual(guess_date('April 10'.split()), (ddate(2010, 4, 1), 'MY'))
self.assertEqual(guess_date('10 April'.split()), (ddate(this_year, 4, 10), 'DM'))
# explicit D
self.assertEqual(guess_date('10th 08'.split()), (ddate(this_year, 8, 10), 'DM'))
self.assertEqual(guess_date('08 10th'.split()), (ddate(this_year, 8, 10), 'MD'))
# some hints
self.assertEqual(guess_date('18 5'.split()), (ddate(this_year, 5, 18), 'DM'))
self.assertEqual(guess_date('4 8'.split()), (ddate(this_year, 8, 4), 'DM'))
# fully ambiguous
self.assertEqual(guess_date('08 10'.split()), (ddate(this_year, 10, 8), 'DM'))
# one-part format
# full year
self.assertEqual(guess_date('2018'.split()), (ddate(2018, 1, 1), 'Y'))
# short year
self.assertEqual(guess_date('18'.split()), (ddate(2018, 1, 1), 'Y'))
self.assertEqual(guess_date('98'.split()), (ddate(1998, 1, 1), 'Y'))
self.assertEqual(guess_date('08'.split()), (ddate(2008, 1, 1), 'Y'))
# non-year token
self.assertRaises(DateParserError, guess_date, ('1', ))
self.assertRaises(DateParserError, guess_date, ('April', ))
self.assertRaises(DateParserError, guess_date, ('10th', ))
# other errors
self.assertRaises(DateParserError, guess_date, '')
self.assertRaises(DateParserError, guess_date, 'fuuu'.split())
self.assertRaises(DateParserError, guess_date, '1 fuuu'.split())
self.assertRaises(DateParserError, guess_date, '1 fuuu bar 2'.split())
self.assertRaises(DateParserError, guess_date, '1 2 3 4'.split())
def test_guess_time(self):
# single token
self.assertEqual(guess_time(['9']), (dtime(hour=9), 'h'))
# am/pm notation
self.assertEqual(guess_time("9 am".split()), (dtime(hour=9), 'h'))
self.assertEqual(guess_time("10 am".split()), (dtime(hour=10), 'h'))
self.assertEqual(guess_time("09 am".split()), (dtime(hour=9), 'h'))
self.assertEqual(guess_time("9 pm".split()), (dtime(hour=21), 'h'))
self.assertEqual(guess_time("10 pm".split()), (dtime(hour=22), 'h'))
self.assertEqual(guess_time("09 pm".split()), (dtime(hour=21), 'h'))
self.assertEqual(guess_time("10 02 am".split()), (dtime(hour=10, minute=2), 'hm'))
self.assertEqual(guess_time("10 02 pm".split()), (dtime(hour=22, minute=2), 'hm'))
self.assertEqual(guess_time("14 am".split()), (dtime(hour=14), 'h'))
self.assertRaises(TimeParserError, guess_time, "14 pm".split())
# 24-hrs notation
self.assertEqual(guess_time("12 34".split()), (dtime(hour=12, minute=34), 'hm'))
self.assertEqual(guess_time("15 32".split()), (dtime(hour=15, minute=32), 'hm'))
self.assertEqual(guess_time("12 04".split()), (dtime(hour=12, minute=4), 'hm'))
self.assertEqual(guess_time("12 4".split()), (dtime(hour=12, minute=4), 'hm'))
# range
self.assertEqual(guess_time("12 58".split()), (dtime(hour=12, minute=58), 'hm'))
self.assertEqual(guess_time("31 04".split()), (dtime(minute=31, second=4), 'ms'))
self.assertEqual(guess_time("31 58".split()), (dtime(minute=31, second=58), 'ms'))
# three terms
self.assertEqual(guess_time("12 34 54".split()),
(dtime(hour=12, minute=34, second=54), 'hms'))
# four terms
self.assertEqual(guess_time("12 34 54 984".split()),
(dtime(hour=12, minute=34, second=54, microsecond=984000), 'hmsn'))
# trailing zeros
self.assertEqual(guess_time("12 34 54 98400".split()),
(dtime(hour=12, minute=34, second=54, microsecond=984000), 'hmsn'))
# leading zeros
self.assertEqual(guess_time("12 34 54 098400".split()),
(dtime(hour=12, minute=34, second=54, microsecond=98400), 'hmsn'))
# invalid formats
self.assertRaises(TimeParserError, guess_time, [])
self.assertRaises(TimeParserError, guess_time, ['0', '1', '2', '3', '4'])
self.assertRaises(TimeParserError, guess_time, "83 02".split())
self.assertRaises(TimeParserError, guess_time, "52 74".split())
def test_guess_datetime(self):
self.assertEqual(guess_datetime(
Struct({'date': '18 05 2012'.split(), 'time': '12 34'.split()})),
(datetime(2012, 5, 18, 12, 34), 'DMYhm'))
self.assertEqual(guess_datetime(Struct({'date': '18 05 2012'.split()})),
(datetime(2012, 5, 18), 'DMY'))
self.assertEqual(guess_datetime(Struct({'time': '12 34'.split()})),
(datetime(1970, 1, 1, 12, 34), 'hm'))
self.assertRaises(DateFormatError, guess_datetime, Struct({}))
def test_DF(self):
# msb
self.assertRaises(DateFormatError, DF('').msb)
self.assertRaises(DateFormatError, DF('abc').msb)
self.assertRaises(DateFormatError, DF('ydHSN').msb)
self.assertEqual('Y', DF('Yab').msb())
self.assertEqual('Y', DF('YDM').msb())
self.assertEqual('Y', DF('MdY').msb())
self.assertEqual('D', DF('mDn').msb())
self.assertEqual('m', DF('mdn').msb())
self.assertEqual('n', DF('nab').msb())
# lsb
self.assertRaises(DateFormatError, DF('').lsb)
self.assertRaises(DateFormatError, DF('abc').lsb)
self.assertEqual('Y', DF('Yab').lsb())
self.assertEqual('D', DF('YDM').lsb())
self.assertEqual('M', DF('MdY').lsb())
self.assertEqual('n', DF('mDn').lsb())
self.assertEqual('n', DF('nab').lsb())
# is_time
self.assertTrue(DF('mshn').is_time())
self.assertTrue(DF('mh').is_time())
self.assertTrue(DF('h').is_time())
self.assertTrue(DF('m').is_time())
self.assertTrue(DF('s').is_time())
self.assertTrue(DF('n').is_time())
self.assertFalse(DF('').is_time())
self.assertFalse(DF('abc').is_time())
self.assertFalse(DF('Msnh').is_time())
self.assertFalse(DF('Ymsnh').is_time())
self.assertFalse(DF('Dmsnh').is_time())
self.assertFalse(DF('YDM').is_time())
# is_date
self.assertTrue(DF('YDM').is_date())
self.assertTrue(DF('YM').is_date())
self.assertTrue(DF('DM').is_date())
self.assertTrue(DF('DY').is_date())
self.assertTrue(DF('Y').is_date())
self.assertTrue(DF('D').is_date())
self.assertTrue(DF('M').is_date())
self.assertFalse(DF('').is_date())
self.assertFalse(DF('abc').is_date())
self.assertFalse(DF('YDMn').is_date())
self.assertFalse(DF('YDm').is_date())
self.assertFalse(DF('YDh').is_date())
self.assertFalse(DF('hmsn').is_date())
# valid
self.assertTrue(DF('Y').valid())
self.assertTrue(DF('YDMhsmn').valid())
self.assertTrue(DF('Yabc').valid())
self.assertFalse(DF('').valid())
self.assertFalse(DF('abc').valid())
self.assertFalse(DF('ydHSN').valid())
def test_increment(self):
self.assertRaises(DateFormatError, increment, None, '')
self.assertEqual(increment(datetime(1970, 1, 1, 0, 0, 0, 10), DF('n')),
datetime(1970, 1, 1, 0, 0, 0, 11))
self.assertEqual(increment(datetime(1970, 1, 1, 0, 0, 1), DF('s')),
datetime(1970, 1, 1, 0, 0, 2))
self.assertEqual(increment(datetime(1970, 1, 1, 0, 1), DF('m')),
datetime(1970, 1, 1, 0, 2))
self.assertEqual(increment(datetime(1970, 1, 1, 1), DF('h')),
datetime(1970, 1, 1, 2))
self.assertEqual(increment(datetime(1970, 1, 1, 1), DF('h')),
datetime(1970, 1, 1, 2))
self.assertEqual(increment(datetime(1970, 2, 3, 4, 5, 6), DF('D')),
datetime(1970, 2, 4))
self.assertEqual(increment(datetime(1970, 2, 3, 4, 5, 6), DF('M')),
datetime(1970, 3, 1))
self.assertEqual(increment(datetime(1970, 2, 3, 4, 5, 6), DF('Y')),
datetime(1971, 1, 1))
self.assertRaises(DateFormatError, increment, datetime(1970, 2, 3, 4, 5, 6), DF('abc'))
## main ##
if __name__ == '__main__':
unittest.main()
## EOF ##
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