Source code
Revision control
Copy as Markdown
Other Tools
// |reftest| shell-option(--enable-temporal) skip-if(!this.hasOwnProperty("Temporal"))
// Common leap months should find a result not too far into the past.
//
// Month -> ISO year
//
// M01L <uncommon>
// M02L 1765
// M03L 1955
// M04L 1944
// M05L 1952
// M06L 1941
// M07L 1938
// M08L 1718
// M09L <uncommon>
// M10L <uncommon>
// M11L <uncommon>
// M12L <uncommon>
//
// M02L and M08L with 29 days is common, but with 30 is actually rather uncommon.
//
// See also "The Mathematics of the Chinese Calendar", Table 21 [1] for a
// distribution of leap months.
//
const monthCodes = [
// M01L is an uncommon leap month.
"M02L",
"M03L",
"M04L",
"M05L",
"M06L",
"M07L",
"M08L",
// M09L..M12L are uncommon leap months.
];
const calendar = "chinese";
// Months can have up to 30 days.
const day = 30;
for (let monthCode of monthCodes) {
let pmd = Temporal.PlainMonthDay.from({calendar, monthCode, day});
assertEq(pmd.monthCode, monthCode);
assertEq(pmd.day, day);
let constrain = Temporal.PlainMonthDay.from({calendar, monthCode, day: day + 1}, {overflow: "constrain"});
assertEq(constrain.monthCode, monthCode);
assertEq(constrain.day, day);
assertSameISOFields(constrain, pmd);
assertThrowsInstanceOf(() => {
Temporal.PlainMonthDay.from({calendar, monthCode, day: day + 1}, {overflow: "reject"});
}, RangeError);
}
if (typeof reportCompare === "function")
reportCompare(true, true);