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// |reftest| skip-if(!this.hasOwnProperty('Temporal')) -- Temporal is not enabled unconditionally
// Copyright (C) 2024 Mozilla Corporation. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
esid: sec-temporal.plainmonthday.from
features: [Temporal, Intl.Era-monthcode]
description: Check correct results for 30-day leap months
includes: [temporalHelpers.js]
---*/
// Reference year for day 30 of leap months
//
// Month -> ISO year
//
// M01L -
// M02L -
// M03L 1955
// M04L 1944
// M05L 1952
// M06L 1941
// M07L 1938
// M08L -
// M09L -
// M10L -
// M11L -
// M12L -
//
// M02L and M08L with 29 days are common, but with 30 are actually rather
// uncommon and are not known to have occurred in the range in which the Chinese
// calendar can be accurately calculated.
//
// See also "The Mathematics of the Chinese Calendar", Table 21 [1] for a
// distribution of leap months.
//
const monthCodesWithYears = [
{ monthCode: "M03L", referenceYear: 1955 },
{ monthCode: "M04L", referenceYear: 1944 },
{ monthCode: "M05L", referenceYear: 1952 },
{ monthCode: "M06L", referenceYear: 1941 },
{ monthCode: "M07L", referenceYear: 1938 }
];
const calendar = "chinese";
for (let {monthCode, referenceYear} of monthCodesWithYears) {
const pmd = Temporal.PlainMonthDay.from({ calendar, monthCode, day: 30 });
TemporalHelpers.assertPlainMonthDay(pmd, monthCode, 30, `${monthCode}-30`, referenceYear);
const constrain = Temporal.PlainMonthDay.from({ calendar, monthCode, day: 31 });
TemporalHelpers.assertPlainMonthDay(constrain, monthCode, 30, `${monthCode} (constrained)`, referenceYear);
assert.sameValue(constrain.equals(pmd), true);
assert.throws(RangeError, () => {
Temporal.PlainMonthDay.from({ calendar, monthCode, day: 31 }, { overflow: "reject" });
});
}
reportCompare(0, 0);