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if (typeof getAvailableLocalesOf === "undefined") {
var getAvailableLocalesOf = SpecialPowers.Cu.getJSTestingFunctions().getAvailableLocalesOf;
}
const locales = getAvailableLocalesOf("DateTimeFormat");
const eras = [
"long",
"short",
"narrow",
];
function formatEra(dtf, date) {
return dtf.formatToParts(date).find(e => e.type === "era").value;
}
const dates = [
new Date("-001000-01-01"),
new Date("+001000-01-01"),
];
for (let locale of locales) {
// Testing all locales makes this test too slow, so only test basic locales.
if (locale.includes("-")) {
continue;
}
for (let era of eras) {
let japanese = new Intl.DateTimeFormat(locale, {
calendar: "japanese",
era,
});
let gregorian = new Intl.DateTimeFormat(locale, {
calendar: "gregory",
era: era !== "long" ? era : "short",
});
for (let date of dates) {
let actual = formatEra(japanese, date);
assertEq(actual !== undefined, true);
assertEq(actual, formatEra(gregorian, date));
}
}
}
if (typeof reportCompare === "function")
reportCompare(0, 0);