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50930a0fa0
PR-URL: https://github.com/nodejs/node/pull/39469 Reviewed-By: Jiawen Geng <technicalcute@gmail.com> Reviewed-By: James M Snell <jasnell@gmail.com> Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
39 lines
1.3 KiB
JavaScript
39 lines
1.3 KiB
JavaScript
// Copyright 2021 the V8 project authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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// Flags: --harmony_intl_best_fit_matcher
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//
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// Test the return list is subset of the request list.
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// https://tc39.es/ecma402/#sec-bestfitsupportedlocales
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// 9.2.9 BestFitSupportedLocales ( availableLocales, requestedLocales )
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// The BestFitSupportedLocales abstract operation returns the SUBSET of the
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// provided BCP 47 language priority list requestedLocales for which
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// availableLocales has a matching locale when using the Best Fit Matcher
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// algorithm. Locales appear in the same order in the returned list as in
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// requestedLocales. The steps taken are implementation dependent.
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function assertSubarray(a, b) {
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assertTrue(a.every(val => b.includes(val)), ['returns:', a, 'requested:', b]);
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}
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function verifySupportedLocalesAreSubarray(f, ll) {
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assertSubarray(f(ll), ll);
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}
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const intlObjs = [
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Intl.Collator,
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Intl.DateTimeFormat,
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Intl.DisplayNames,
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Intl.ListFormat,
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Intl.NumberFormat,
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Intl.PluralRules,
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Intl.RelativeTimeFormat,
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Intl.Segmenter,
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];
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intlObjs.forEach(function(obj) {
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verifySupportedLocalesAreSubarray(obj.supportedLocalesOf, ['en', 'ceb']);
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verifySupportedLocalesAreSubarray(obj.supportedLocalesOf, ['en', 'ceb', 'fil']);
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});
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