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Allow alternative implementations for Chinese lunar calendar

This commit is contained in:
André Bargull 2024-05-14 15:24:11 +02:00 committed by Ms2ger
parent efe0b1871f
commit 57b9f154a6
1 changed files with 15 additions and 7 deletions
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22
test/intl402/Temporal/Calendar/prototype/yearMonthFromFields/reference-day-chinese.js vendored
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@ -17,6 +17,11 @@ const chinese = new Temporal.Calendar("chinese");
const months2022TestData = [
// TODO: Sources conflict over whether M01L and M12L exist in _any_ year.
// Clarify this, and delete if appropriate. ICU has them, but may be wrong.
//
// - ICU4C and ICU4X both have M01L in Gregorian year 1651.
// - ICU4C has M12L in Gregorian year 1889, but ICU4X doesn't.
// - ICU4X has M12L in Gregorian year 1403, but ICU4C doesn't.
["M01", 1, 1],
["M02", 2, 3],
["M03", 3, 1],
@ -31,13 +36,15 @@ const months2022TestData = [
["M12", 12, 23],
];
for (const [nonLeapMonthCode, month, referenceISODay] of months2022TestData) {
// Allow implementation-defined "epoch year" for the Chinese calendar.
const year = new Temporal.PlainDate(2022, 3, 1).withCalendar(chinese).year;
const leapMonthCode = nonLeapMonthCode + "L";
const fields = { year: 2022, monthCode: leapMonthCode };
const fields = { year, monthCode: leapMonthCode };
const result = chinese.yearMonthFromFields(fields, { overflow: "constrain" });
TemporalHelpers.assertPlainYearMonth(
result,
2022, month, nonLeapMonthCode,
year, month, nonLeapMonthCode,
`Chinese intercalary month ${leapMonthCode} does not exist in year 2022 (overflow constrain)`,
/* era = */ undefined, /* era year = */ undefined, referenceISODay
);
@ -49,9 +56,9 @@ for (const [nonLeapMonthCode, month, referenceISODay] of months2022TestData) {
);
}
// Years in which leap months exist according to ICU
// Years in which leap months exist according to ICU4C/ICU4X.
const leapMonthsTestData = [
["M01L", 2148, 2, 20],
["M01L", 1651, 2, 20],
["M02L", 2023, 3, 22],
["M03L", 1993, 4, 22],
["M04L", 2020, 5, 23],
@ -61,10 +68,11 @@ const leapMonthsTestData = [
["M08L", 1995, 9, 25],
["M09L", 2014, 10, 24],
["M10L", 1984, 11, 23],
["M11L", 2033, 12, 22],
["M12L", 1889, 13, 21, 1890, 1],
["M11L", 1517, 12, 23],
];
for (const [monthCode, year, month, referenceISODay, isoYear = year, isoMonth = month] of leapMonthsTestData) {
for (const [monthCode, relatedYear, month, referenceISODay, isoYear = relatedYear, isoMonth = month] of leapMonthsTestData) {
// Allow implementation-defined "epoch year" for the Chinese calendar.
const year = new Temporal.PlainDate(relatedYear, 3, 1).withCalendar(chinese).year;
const result = chinese.yearMonthFromFields({ year, monthCode });
TemporalHelpers.assertPlainYearMonth(
result,