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// Copyright (C) 2026 Igalia, S.L. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
esid: sec-intl.datetimeformat
description: >
Tests that fallbacks for not-yet-adopted calendars are selected from one of
the values returned from `AvailableCalendars`.
locale: [en]
includes: [temporalHelpers.js]
features: [Intl.Era-monthcode]
---*/
const availableCalendars = [
"buddhist",
"chinese",
"coptic",
"dangi",
"ethioaa",
"ethiopic",
"gregory",
"hebrew",
"indian",
"islamic-civil",
"islamic-tbla",
"islamic-umalqura",
"iso8601",
"japanese",
"persian",
"roc",
];
for (const calendar of TemporalHelpers.NotYetSupportedCalendars) {
const option = new Intl.DateTimeFormat("en", { calendar });
assert(
availableCalendars.includes(option.resolvedOptions().calendar),
`${calendar} should fall back to an available calendar`
);
const uExtension = new Intl.DateTimeFormat(`en-u-ca-${calendar}`);
assert(
availableCalendars.includes(uExtension.resolvedOptions().calendar),
`${calendar} should fall back to an available calendar`
);
}
reportCompare(0, 0);