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// |reftest| skip-if(!this.hasOwnProperty('Temporal')) -- Temporal is not enabled unconditionally
// Copyright (C) 2021 Igalia, S.L. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
esid: sec-temporal.zoneddatetime.prototype.tolocalestring
description: Verify that undefined options are handled correctly.
features: [BigInt, Temporal]
---*/
const datetime = new Temporal.ZonedDateTime(957270896_987_650_000n, "UTC");
const defaultFormatter = new Intl.DateTimeFormat('en', {
year: "numeric",
month: "numeric",
day: "numeric",
hour: "numeric",
minute: "numeric",
second: "numeric",
timeZoneName: "short",
timeZone: "UTC",
});
const expected = defaultFormatter.format(datetime.toInstant());
const actualExplicit = datetime.toLocaleString('en', undefined);
assert.sameValue(actualExplicit, expected, "default locale is determined by Intl.DateTimeFormat");
const actualImplicit = datetime.toLocaleString('en');
assert.sameValue(actualImplicit, expected, "default locale is determined by Intl.DateTimeFormat");
reportCompare(0, 0);
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