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// Copyright 2024 Igalia, S.L. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
esid: sec-createdatetimeformat
description: >
Tests that the time zone names "Etc/UTC", "Etc/GMT", and "GMT" are not
canonicalized to "UTC" in "resolvedOptions".
info: |
CreateDateTimeFormat ( dateTimeFormat, locales, options, required, default )
30. If IsTimeZoneOffsetString(timeZone) is true, then
...
31. Else,
a. Let timeZoneIdentifierRecord be GetAvailableNamedTimeZoneIdentifier(timeZone).
...
c. Set timeZone to timeZoneIdentifierRecord.[[Identifier]].
GetAvailableNamedTimeZoneIdentifier ( timeZoneIdentifier )
1. For each element record of AvailableNamedTimeZoneIdentifiers(), do
a. If record.[[Identifier]] is an ASCII-case-insensitive match for
timeZoneIdentifier, return record.
features: [canonical-tz]
---*/
const utcIdentifiers = ["Etc/GMT", "Etc/UTC", "GMT"];
for (const timeZone of utcIdentifiers) {
assert.sameValue(
new Intl.DateTimeFormat([], {timeZone}).resolvedOptions().timeZone,
timeZone,
"Time zone name " + timeZone + " should be preserved and not canonicalized to 'UTC'");
}
reportCompare(0, 0);