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// |reftest| skip-if(!this.hasOwnProperty("Temporal"))
const eras = [
{
name: "meiji",
start: "1868-09-08",
end: "1912-07-29",
},
{
name: "taisho",
start: "1912-07-30",
end: "1926-12-24",
},
{
name: "showa",
start: "1926-12-25",
end: "1989-01-07",
},
{
name: "heisei",
start: "1989-01-08",
end: "2019-04-30",
},
{
name: "reiwa",
start: "2019-05-01",
end: undefined,
},
];
for (let {name: era, start, end} of eras) {
let eraStart = Temporal.PlainDate.from(start);
let eraEnd = end && Temporal.PlainDate.from(end);
// Months before start of era.
for (let month = 1; month < eraStart.month; ++month) {
for (let day = 1; day <= 32; ++day) {
let monthCode = "M" + String(month).padStart(2, "0");
let dateWithMonth = Temporal.PlainDate.from({
calendar: "japanese",
era,
eraYear: 1,
month,
day,
});
let dateWithMonthCode = Temporal.PlainDate.from({
calendar: "japanese",
era,
eraYear: 1,
monthCode,
day,
});
assertEq(dateWithMonth.toString({calendarName: "never"}), start);
assertEq(dateWithMonthCode.toString({calendarName: "never"}), start);
}
}
// Days before start of era.
for (let day = 1; day < eraStart.day; ++day) {
let dateWithMonth = Temporal.PlainDate.from({
calendar: "japanese",
era,
eraYear: 1,
month: eraStart.month,
day,
});
let dateWithMonthCode = Temporal.PlainDate.from({
calendar: "japanese",
era,
eraYear: 1,
monthCode: eraStart.monthCode,
day,
});
assertEq(dateWithMonth.toString({calendarName: "never"}), start);
assertEq(dateWithMonthCode.toString({calendarName: "never"}), start);
}
// After start of era.
for (let day = eraStart.day; day <= 32; ++day) {
let dateWithMonth = Temporal.PlainDate.from({
calendar: "japanese",
era,
eraYear: 1,
month: eraStart.month,
day,
});
let dateWithMonthCode = Temporal.PlainDate.from({
calendar: "japanese",
era,
eraYear: 1,
monthCode: eraStart.monthCode,
day,
});
let expected = Temporal.PlainDate.from({
year: eraStart.year,
monthCode: eraStart.monthCode,
day,
}).toString();
assertEq(dateWithMonth.toString({calendarName: "never"}), expected);
assertEq(dateWithMonthCode.toString({calendarName: "never"}), expected);
}
// Months after start of era.
for (let month = eraStart.month + 1; month <= 12; ++month) {
for (let day = 1; day <= 32; ++day) {
let monthCode = "M" + String(month).padStart(2, "0");
let dateWithMonth = Temporal.PlainDate.from({
calendar: "japanese",
era,
eraYear: 1,
month,
day,
});
let dateWithMonthCode = Temporal.PlainDate.from({
calendar: "japanese",
era,
eraYear: 1,
monthCode,
day,
});
let expected = Temporal.PlainDate.from({
year: eraStart.year,
monthCode: monthCode,
day,
}).toString();
assertEq(dateWithMonth.toString({calendarName: "never"}), expected);
assertEq(dateWithMonthCode.toString({calendarName: "never"}), expected);
}
}
if (end) {
let lastEraYear = (eraEnd.year - eraStart.year) + 1;
// After end of era.
for (let day = 31; day <= 32; ++day) {
let date = Temporal.PlainDate.from({
calendar: "japanese",
era,
eraYear: 100,
monthCode: "M12",
day,
});
assertEq(date.toString({calendarName: "never"}), end);
}
// Days after end of era.
for (let day = eraEnd.day + 1; day <= 32; ++day) {
let dateWithMonth = Temporal.PlainDate.from({
calendar: "japanese",
era,
eraYear: lastEraYear,
month: eraEnd.month,
day,
});
let dateWithMonthCode = Temporal.PlainDate.from({
calendar: "japanese",
era,
eraYear: lastEraYear,
monthCode: eraEnd.monthCode,
day,
});
assertEq(dateWithMonth.toString({calendarName: "never"}), end);
assertEq(dateWithMonthCode.toString({calendarName: "never"}), end);
}
// Months after end of era.
for (let month = eraEnd.month + 1; month <= 12; ++month) {
for (let day = 1; day <= 32; ++day) {
let monthCode = "M" + String(month).padStart(2, "0");
let dateWithMonth = Temporal.PlainDate.from({
calendar: "japanese",
era,
eraYear: lastEraYear,
month,
day,
});
let dateWithMonthCode = Temporal.PlainDate.from({
calendar: "japanese",
era,
eraYear: lastEraYear,
monthCode,
day,
});
assertEq(dateWithMonth.toString({calendarName: "never"}), end);
assertEq(dateWithMonthCode.toString({calendarName: "never"}), end);
}
}
// Year after end of era.
let yearAfterLastEraYear = lastEraYear + 1;
for (let month = 1; month <= 12; ++month) {
for (let day = 1; day <= 31; ++day) {
let monthCode = "M" + String(month).padStart(2, "0");
let dateWithMonth = Temporal.PlainDate.from({
calendar: "japanese",
era,
eraYear: yearAfterLastEraYear,
month,
day,
});
let dateWithMonthCode = Temporal.PlainDate.from({
calendar: "japanese",
era,
eraYear: yearAfterLastEraYear,
monthCode,
day,
});
assertEq(dateWithMonth.toString({calendarName: "never"}), end, `era=${era}, eraYear=${yearAfterLastEraYear}, month=${month}, day=${day}`);
assertEq(dateWithMonthCode.toString({calendarName: "never"}), end, `era=${era}, eraYear=${yearAfterLastEraYear}, monthCode=${monthCode}, day=${day}`);
}
}
}
}
if (typeof reportCompare === "function")
reportCompare(true, true);