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# holidays
# --------
# A fast, efficient Python library for generating country, province and state
# specific sets of holidays on the fly. It aims to make determining whether a
# specific date is a holiday as fast and flexible as possible.
#
# Authors: Vacanza Team and individual contributors (see CONTRIBUTORS file)
# dr-prodigy <dr.prodigy.github@gmail.com> (c) 2017-2023
# ryanss <ryanssdev@icloud.com> (c) 2014-2017
# Website: https://github.com/vacanza/holidays
# License: MIT (see LICENSE file)
import unittest
from holidays.calendars.chinese import _ChineseLunisolar, KOREAN_CALENDAR, VIETNAMESE_CALENDAR
class TestChineseLunisolarCalendar(unittest.TestCase):
def setUp(self) -> None:
super().setUp()
self.calendar = _ChineseLunisolar()
def test_check_calendar(self):
self.assertRaises(ValueError, lambda: _ChineseLunisolar("INVALID_CALENDAR"))
def test_winter_solstice_chinese(self):
for year, day in (
(1943, 23),
(1947, 23),
(1951, 22),
(1984, 22),
(1988, 21),
(1992, 21),
(2017, 22),
(2021, 21),
(2025, 21),
(2054, 22),
(2058, 21),
(2062, 21),
(2087, 22),
(2091, 21),
(2095, 21),
):
self.assertEqual(self.calendar.winter_solstice_date(year)[0].day, day)
def test_winter_solstice_korean(self):
for year, day in (
(1951, 23),
(1955, 23),
(1959, 22),
(1988, 22),
(1992, 21),
(1996, 21),
(2025, 22),
(2029, 21),
(2033, 21),
(2058, 22),
(2062, 21),
(2066, 21),
(2095, 22),
(2099, 21),
):
self.assertEqual(self.calendar.winter_solstice_date(year, KOREAN_CALENDAR)[0].day, day)
def test_winter_solstice_vietnamese(self):
for year, day in (
(1943, 23),
(1947, 22),
(1976, 22),
(1980, 21),
(1984, 21),
(2013, 22),
(2017, 21),
(2021, 21),
(2046, 22),
(2050, 21),
(2054, 21),
(2079, 22),
(2083, 21),
(2087, 21),
):
self.assertEqual(
self.calendar.winter_solstice_date(year, VIETNAMESE_CALENDAR)[0].day, day
)
def test_winter_solstice_estimated(self):
for year in (1940, 2100):
self.assertTrue(self.calendar.winter_solstice_date(year)[1])
for year in (1941, 2099):
self.assertFalse(self.calendar.winter_solstice_date(year)[1])
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