firefox-main/third_party/rust/icu_calendar/src/tests/continuity_test.rs

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// This file is part of ICU4X. For terms of use, please see the file
// called LICENSE at the top level of the ICU4X source tree
use crate::{types::*, *};
fn check_continuity<A: AsCalendar>(mut date: Date<A>, years_to_check: usize) {
let duration = DateDuration::for_days(1);
let mut rata_die = date.to_rata_die();
let mut weekday = date.day_of_week();
let mut year = date.year();
let mut is_in_leap_year = date.is_in_leap_year();
for _ in 0..(366 * years_to_check) {
let next_date = date
.try_added_with_options(duration, Default::default())
.unwrap();
let next_rata_die = next_date.to_iso().to_rata_die();
assert_eq!(next_rata_die, rata_die + 1, "{next_date:?}");
let next_weekday = next_date.day_of_week();
let next_year = next_date.year();
let next_is_in_leap_year = next_date.is_in_leap_year();
assert_eq!(
(next_weekday as usize) % 7,
(weekday as usize + 1) % 7,
"{next_date:?}"
);
if year == next_year {
assert_eq!(is_in_leap_year, next_is_in_leap_year, "{next_date:?}");
}
date = next_date;
rata_die = next_rata_die;
weekday = next_weekday;
year = next_year;
is_in_leap_year = next_is_in_leap_year;
}
}
fn check_every_250_days<A: AsCalendar>(mut date: Date<A>, iters: usize) {
let duration = DateDuration::for_days(250);
let mut rata_die = date.to_rata_die();
for _ in 0..iters {
let next_date = date
.try_added_with_options(duration, Default::default())
.unwrap();
let next_iso = next_date.to_iso();
let next_rata_die = next_iso.to_rata_die();
assert_eq!(next_rata_die, rata_die + 250, "{next_date:?}");
let next_date_roundtrip = next_iso.to_calendar(Ref(next_date.calendar()));
assert_eq!(next_date, next_date_roundtrip, "{next_date:?}");
date = next_date;
rata_die = next_rata_die;
}
}
#[test]
fn test_buddhist_continuity() {
let date = Date::try_new_buddhist(-10, 1, 1);
check_continuity(date.unwrap(), 20);
let date = Date::try_new_buddhist(-300, 1, 1);
check_every_250_days(date.unwrap(), 2000);
}
#[test]
fn test_chinese_continuity() {
let cal = crate::cal::ChineseTraditional::new();
let date = Date::try_new_from_codes(None, -10, MonthCode::new_normal(1).unwrap(), 1, cal);
check_continuity(date.unwrap(), 20);
let date = Date::try_new_from_codes(None, -300, MonthCode::new_normal(1).unwrap(), 1, cal);
check_every_250_days(date.unwrap(), 2000);
let date = Date::try_new_from_codes(None, -10000, MonthCode::new_normal(1).unwrap(), 1, cal);
check_every_250_days(date.unwrap(), 2000);
let date = Date::try_new_from_codes(None, 1899, MonthCode::new_normal(1).unwrap(), 1, cal);
check_continuity(date.unwrap(), 20);
let date = Date::try_new_from_codes(None, 2099, MonthCode::new_normal(1).unwrap(), 1, cal);
check_continuity(date.unwrap(), 20);
}
#[test]
fn test_coptic_continuity() {
let date = Date::try_new_coptic(-10, 1, 1);
check_continuity(date.unwrap(), 20);
let date = Date::try_new_coptic(-300, 1, 1);
check_every_250_days(date.unwrap(), 2000);
}
#[test]
fn test_korean_continuity() {
let cal = cal::KoreanTraditional::new();
let date = Date::try_new_from_codes(None, -10, MonthCode::new_normal(1).unwrap(), 1, cal);
check_continuity(date.unwrap(), 20);
let date = Date::try_new_from_codes(None, -300, MonthCode::new_normal(1).unwrap(), 1, cal);
check_every_250_days(date.unwrap(), 2000);
let date = Date::try_new_from_codes(None, 1900, MonthCode::new_normal(1).unwrap(), 1, cal);
check_continuity(date.unwrap(), 20);
let date = Date::try_new_from_codes(None, 2100, MonthCode::new_normal(1).unwrap(), 1, cal);
check_continuity(date.unwrap(), 20);
}
#[test]
fn test_ethiopian_continuity() {
use cal::EthiopianEraStyle::*;
let date = Date::try_new_ethiopian(AmeteMihret, -10, 1, 1);
check_continuity(date.unwrap(), 20);
let date = Date::try_new_ethiopian(AmeteMihret, -300, 1, 1);
check_every_250_days(date.unwrap(), 2000);
}
#[test]
fn test_ethiopian_amete_alem_continuity() {
use cal::EthiopianEraStyle::*;
let date = Date::try_new_ethiopian(AmeteAlem, -10, 1, 1);
check_continuity(date.unwrap(), 20);
let date = Date::try_new_ethiopian(AmeteAlem, -300, 1, 1);
check_every_250_days(date.unwrap(), 2000);
}
#[test]
fn test_gregorian_continuity() {
let date = Date::try_new_gregorian(-10, 1, 1);
check_continuity(date.unwrap(), 20);
let date = Date::try_new_gregorian(-300, 1, 1);
check_every_250_days(date.unwrap(), 2000);
}
#[test]
fn test_hebrew_continuity() {
let date =
Date::try_new_from_codes(None, -10, MonthCode::new_normal(1).unwrap(), 1, cal::Hebrew);
check_continuity(date.unwrap(), 20);
let date = Date::try_new_from_codes(
None,
-300,
MonthCode::new_normal(1).unwrap(),
1,
cal::Hebrew,
);
check_every_250_days(date.unwrap(), 2000);
}
#[test]
fn test_indian_continuity() {
let date = Date::try_new_indian(-10, 1, 1);
check_continuity(date.unwrap(), 20);
let date = Date::try_new_indian(-300, 1, 1);
check_every_250_days(date.unwrap(), 2000);
}
#[test]
fn test_hijri_civil_continuity() {
let cal = cal::Hijri::new_tabular(
cal::hijri::TabularAlgorithmLeapYears::TypeII,
cal::hijri::TabularAlgorithmEpoch::Friday,
);
let date = Date::try_new_hijri_with_calendar(-10, 1, 1, cal);
check_continuity(date.unwrap(), 20);
let date = Date::try_new_hijri_with_calendar(-300, 1, 1, cal);
check_every_250_days(date.unwrap(), 2000);
}
#[test]
fn test_hijri_simulated_mecca_continuity() {
#[cfg(feature = "logging")]
let _ = simple_logger::SimpleLogger::new().env().init();
let cal = cal::Hijri::new_simulated_mecca();
let date = Date::try_new_hijri_with_calendar(-10, 1, 1, cal);
// This test is slow since it is doing astronomical calculations, so check only 3 years
check_continuity(date.unwrap(), 3);
let date = Date::try_new_hijri_with_calendar(-300, 1, 1, cal);
// This test is slow since it is doing astronomical calculations, so check only 100 dates
check_every_250_days(date.unwrap(), 100);
}
#[test]
fn test_hijri_tabular_continuity() {
let cal = cal::Hijri::new_tabular(
cal::hijri::TabularAlgorithmLeapYears::TypeII,
cal::hijri::TabularAlgorithmEpoch::Thursday,
);
let date = Date::try_new_hijri_with_calendar(-10, 1, 1, cal);
check_continuity(date.unwrap(), 20);
let date = Date::try_new_hijri_with_calendar(-300, 1, 1, cal);
check_every_250_days(date.unwrap(), 2000);
}
#[test]
fn test_hijri_umm_al_qura_continuity() {
#[cfg(feature = "logging")]
let _ = simple_logger::SimpleLogger::new().env().init();
let cal = cal::Hijri::new_umm_al_qura();
let date = Date::try_new_hijri_with_calendar(-10, 1, 1, cal);
check_continuity(date.unwrap(), 20);
let date = Date::try_new_hijri_with_calendar(1290, 1, 1, cal);
check_continuity(date.unwrap(), 20);
let date = Date::try_new_hijri_with_calendar(1590, 1, 1, cal);
check_continuity(date.unwrap(), 20);
let date = Date::try_new_hijri_with_calendar(-300, 1, 1, cal);
check_every_250_days(date.unwrap(), 2000);
}
#[test]
fn test_iso_continuity() {
let date = Date::try_new_iso(-10, 1, 1);
check_continuity(date.unwrap(), 20);
let date = Date::try_new_iso(-300, 1, 1);
check_every_250_days(date.unwrap(), 2000);
}
#[test]
fn test_japanese_continuity() {
let cal = cal::Japanese::new();
let cal = Ref(&cal);
let date = Date::try_new_japanese_with_calendar("heisei", 20, 1, 1, cal);
check_continuity(date.unwrap(), 20);
let date = Date::try_new_japanese_with_calendar("bce", 500, 1, 1, cal);
check_every_250_days(date.unwrap(), 2000);
}
#[test]
fn test_japanese_extended_continuity() {
let cal = cal::JapaneseExtended::new();
let cal = Ref(&cal);
let date = Date::try_new_japanese_extended_with_calendar("heisei", 20, 1, 1, cal);
check_continuity(date.unwrap(), 20);
let date = Date::try_new_japanese_extended_with_calendar("bce", 500, 1, 1, cal);
check_every_250_days(date.unwrap(), 2000);
}
#[test]
fn test_persian_continuity() {
let date = Date::try_new_persian(-10, 1, 1);
check_continuity(date.unwrap(), 20);
let date = Date::try_new_persian(-300, 1, 1);
check_every_250_days(date.unwrap(), 2000);
}
#[test]
fn test_roc_continuity() {
let date = Date::try_new_roc(-10, 1, 1);
check_continuity(date.unwrap(), 20);
let date = Date::try_new_roc(-300, 1, 1);
check_every_250_days(date.unwrap(), 2000);
}