Source code
Revision control
Copy as Markdown
Other Tools
// |reftest| skip-if(!this.hasOwnProperty('Temporal')) -- Temporal is not enabled unconditionally
// Copyright (C) 2025 Igalia, S.L. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
esid: sec-temporal.plainyearmonth.from
description: >
Check that various dates created from a property bag have the expected
properties
includes: [temporalHelpers.js]
features: [Temporal, Intl.Era-monthcode]
---*/
const options = { overflow: "reject" };
const cases = [
["buddhist", 2543, 1, "M01", "be", 2543, "month containing ISO date 2000-01-01"],
["chinese", 1999, 11, "M11", undefined, undefined, "month containing ISO date 2000-01-01"],
["coptic", 1716, 4, "M04", "am", 1716, "month containing ISO date 2000-01-01"],
["dangi", 1999, 11, "M11", undefined, undefined, "month containing ISO date 2000-01-01"],
["ethioaa", 7492, 4, "M04", "aa", 7492, "month containing ISO date 2000-01-01"],
["ethiopic", 1992, 4, "M04", "am", 1992, "month containing ISO date 2000-01-01"],
["gregory", 2000, 1, "M01", "ce", 2000, "month containing ISO date 2000-01-01"],
["hebrew", 5760, 4, "M04", "am", 5760, "month containing ISO date 2000-01-01"],
["indian", 1921, 10, "M10", "shaka", 1921, "month containing ISO date 2000-01-01"],
["islamic-civil", 1420, 9, "M09", "ah", 1420, "month containing ISO date 2000-01-01"],
["islamic-tbla", 1420, 9, "M09", "ah", 1420, "month containing ISO date 2000-01-01"],
["islamic-umalqura", 1420, 9, "M09", "ah", 1420, "month containing ISO date 2000-01-01"],
["japanese", 2000, 1, "M01", "heisei", 12, "month containing ISO date 2000-01-01"],
["persian", 1378, 10, "M10", "ap", 1378, "month containing ISO date 2000-01-01"],
["roc", 89, 1, "M01", "roc", 89, "month containing ISO date 2000-01-01"],
["buddhist", 544, 1, "M01", "be", 544, "month containing ISO date 0001-01-01"],
// ["chinese", 0, 12, "M11", undefined, undefined, "month containing ISO date 0001-01-01"], // (out of specified range)
["coptic", -283, 5, "M05", "am", -283, "month containing ISO date 0001-01-01"],
// ["dangi", 0, 12, "M11", undefined, undefined, "month containing ISO date 0001-01-01"], // (out of specified range)
["ethioaa", 5493, 5, "M05", "aa", 5493, "month containing ISO date 0001-01-01"],
["ethiopic", -7, 5, "M05", "aa", 5493, "month containing ISO date 0001-01-01"],
["gregory", 1, 1, "M01", "ce", 1, "month containing ISO date 0001-01-01"],
["hebrew", 3761, 4, "M04", "am", 3761, "month containing ISO date 0001-01-01"],
["indian", -78, 10, "M10", "shaka", -78, "month containing ISO date 0001-01-01"],
["islamic-civil", -640, 5, "M05", "bh", 641, "month containing ISO date 0001-01-01"],
["islamic-tbla", -640, 5, "M05", "bh", 641, "month containing ISO date 0001-01-01"],
["islamic-umalqura", -640, 5, "M05", "bh", 641, "month containing ISO date 0001-01-01"],
["japanese", 1, 1, "M01", "ce", 1, "month containing ISO date 0001-01-01"],
["persian", -621, 10, "M10", "ap", -621, "month containing ISO date 0001-01-01"],
["roc", -1910, 1, "M01", "broc", 1911, "month containing ISO date 0001-01-01"],
// Additional cases that were moved in from staging tests, or that we add to
// catch regressions
["chinese", 1900, 1, "M01", undefined, undefined, "start of non-approximated range"],
["chinese", 2099, 13, "M12", undefined, undefined, "end of non-approximated range"],
["dangi", 1900, 1, "M01", undefined, undefined, "start of non-approximated range"],
["dangi", 2049, 12, "M12", undefined, undefined, "end of non-approximated range"],
["islamic-civil", 1445, 1, "M01", "ah", 1445, "recent year"],
["islamic-tbla", 1445, 1, "M01", "ah", 1445, "recent year"],
["islamic-umalqura", 1445, 1, "M01", "ah", 1445, "recent year"],
["islamic-umalqura", -6823, 1, "M01", "bh", 6824, "https://github.com/unicode-org/icu4x/issues/4914"],
["persian", 1395, 1, "M01", "ap", 1395, "leap year 1395"],
["persian", 1396, 1, "M01", "ap", 1396, "common year 1396"],
["persian", 1397, 1, "M01", "ap", 1397, "common year 1397"],
["persian", 1398, 1, "M01", "ap", 1398, "common year 1398"],
["persian", 1399, 1, "M01", "ap", 1399, "leap year 1399"],
["persian", 1400, 1, "M01", "ap", 1400, "common year 1400"],
];
for (const [calendar, year, month, monthCode, era, eraYear, descr] of cases) {
const dateFromYearMonth = Temporal.PlainYearMonth.from({ year, month, calendar }, options);
TemporalHelpers.assertPlainYearMonth(
dateFromYearMonth,
year, month, monthCode,
`${descr} (${calendar}) - created from year and month`,
era, eraYear, null);
const dateFromYearMonthCode = Temporal.PlainYearMonth.from({ year, monthCode, calendar }, options);
TemporalHelpers.assertPlainYearMonth(
dateFromYearMonthCode,
year, month, monthCode,
`${descr} (${calendar}) - created from year and month code`,
era, eraYear, null);
if (era === undefined) continue; // skip era-less calendars
const dateFromEraMonth = Temporal.PlainYearMonth.from({ era, eraYear, month, calendar }, options);
TemporalHelpers.assertPlainYearMonth(
dateFromEraMonth,
year, month, monthCode,
`${descr} (${calendar}) - created from era, era year, and month`,
era, eraYear, null);
const dateFromEraMonthCode = Temporal.PlainYearMonth.from({ era, eraYear, monthCode, calendar }, options);
TemporalHelpers.assertPlainYearMonth(
dateFromEraMonthCode,
year, month, monthCode,
`${descr} (${calendar}) - created from era, era year, and month code`,
era, eraYear, null);
}
reportCompare(0, 0);