mirror of https://github.com/tc39/test262.git
27 lines
1.0 KiB
JavaScript
27 lines
1.0 KiB
JavaScript
// Copyright 2020 André Bargull. 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-apply-options-to-tag
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description: >
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ApplyOptionsToTag canonicalises the language tag two times.
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info: |
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10.1.1 ApplyOptionsToTag( tag, options )
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...
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9. Set tag to CanonicalizeUnicodeLocaleId(tag).
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10. If language is not undefined,
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...
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b. Set tag to tag with the substring corresponding to the unicode_language_subtag
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production of the unicode_language_id replaced by the string language.
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...
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13. Return CanonicalizeUnicodeLocaleId(tag).
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features: [Intl.Locale]
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---*/
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// ApplyOptionsToTag canonicalises the locale identifier before applying the
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// options. That means "und-Armn-SU" is first canonicalised to "und-Armn-AM",
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// then the language is changed to "ru". If "ru" were applied first, the result
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// would be "ru-Armn-RU" instead.
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assert.sameValue(new Intl.Locale("und-Armn-SU", {language: "ru"}).toString(), "ru-Armn-AM");
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