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The test for https://github.com/tc39/ecma402/pull/724 (added in https://github.com/tc39/test262/pull/4328) didn't take the Time Zone Canonicalization proposal into account; but it should, because that proposal is stage 3. As of that proposal, the [[TimeZone]] slot of DateTimeFormat gets the case-regularized original identifier, no longer the primary identifier. So the resolvedOptions().timeZone property also no longer returns the primary identifier.
35 lines
1.2 KiB
JavaScript
35 lines
1.2 KiB
JavaScript
// Copyright 2024 Igalia, S.L. All rights reserved.
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// This code is governed by the BSD license found in the LICENSE file.
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/*---
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esid: sec-createdatetimeformat
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description: >
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Tests that the time zone names "Etc/UTC", "Etc/GMT", and "GMT" are not
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canonicalized to "UTC" in "resolvedOptions".
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info: |
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CreateDateTimeFormat ( dateTimeFormat, locales, options, required, default )
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30. If IsTimeZoneOffsetString(timeZone) is true, then
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...
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31. Else,
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a. Let timeZoneIdentifierRecord be GetAvailableNamedTimeZoneIdentifier(timeZone).
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...
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c. Set timeZone to timeZoneIdentifierRecord.[[Identifier]].
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GetAvailableNamedTimeZoneIdentifier ( timeZoneIdentifier )
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1. For each element record of AvailableNamedTimeZoneIdentifiers(), do
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a. If record.[[Identifier]] is an ASCII-case-insensitive match for
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timeZoneIdentifier, return record.
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features: [canonical-tz]
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---*/
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const utcIdentifiers = ["Etc/GMT", "Etc/UTC", "GMT"];
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for (const timeZone of utcIdentifiers) {
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assert.sameValue(
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new Intl.DateTimeFormat([], {timeZone}).resolvedOptions().timeZone,
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timeZone,
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"Time zone name " + timeZone + " should be preserved and not canonicalized to 'UTC'");
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}
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