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// |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.plainmonthday.from
description: PlainMonthDay can be created for all month codes (M01-M12) in Islamic-civil calendar
features: [Temporal, Intl.Era-monthcode]
includes: [temporalHelpers.js]
---*/
// Test that all month codes M01-M12 are valid for the Islamic-civil calendar
// Islamic calendar month lengths:
// - 30 days: M01, M03, M05, M07, M09, M11, M12
// - 29 days: M02, M04, M06, M08, M10
const calendar = "islamic-civil";
// Months with 30 days - reference year 1971 for M12-30
const monthsWith30Days = [
["M01"],
["M03"],
["M05"],
["M07"],
["M09"],
["M11"],
["M12", 1971],
];
for (const [monthCode, referenceYear30 = 1972] of monthsWith30Days) {
const pmd = Temporal.PlainMonthDay.from({ calendar, monthCode, day: 1 });
TemporalHelpers.assertPlainMonthDay(pmd, monthCode, 1, `${monthCode}-01`);
const pmd30 = Temporal.PlainMonthDay.from({ calendar, monthCode, day: 30 });
TemporalHelpers.assertPlainMonthDay(pmd30, monthCode, 30, `${monthCode}-30`, referenceYear30);
const constrained = Temporal.PlainMonthDay.from(
{ calendar, monthCode, day: 31 },
{ overflow: "constrain" }
);
TemporalHelpers.assertPlainMonthDay(constrained, monthCode, 30, `day 31 should be constrained to 30 for ${monthCode}`, referenceYear30);
assert.throws(RangeError, () => {
Temporal.PlainMonthDay.from({ calendar, monthCode, day: 31 }, { overflow: "reject" });
}, `${monthCode} with day 31 should throw with reject overflow`);
}
// Months with 29 days
const monthsWith29Days = ["M02", "M04", "M06", "M08", "M10"];
for (const monthCode of monthsWith29Days) {
const pmd = Temporal.PlainMonthDay.from({ calendar, monthCode, day: 1 });
TemporalHelpers.assertPlainMonthDay(pmd, monthCode, 1, `${monthCode}-01`);
const pmd29 = Temporal.PlainMonthDay.from({ calendar, monthCode, day: 29 });
TemporalHelpers.assertPlainMonthDay(pmd29, monthCode, 29, `${monthCode}-29`);
const constrained = Temporal.PlainMonthDay.from(
{ calendar, monthCode, day: 30 },
{ overflow: "constrain" }
);
TemporalHelpers.assertPlainMonthDay(constrained, monthCode, 29, `day 30 should be constrained to 29 for ${monthCode}`);
assert.throws(RangeError, () => {
Temporal.PlainMonthDay.from({ calendar, monthCode, day: 30 }, { overflow: "reject" });
}, `${monthCode} with day 30 should throw with reject overflow`);
}
reportCompare(0, 0);