mirror of https://github.com/tc39/test262.git
49 lines
1.8 KiB
JavaScript
49 lines
1.8 KiB
JavaScript
// Copyright (C) 2021 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-intl.supportedvaluesof
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description: >
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The returned "currency" values are sorted, unique, and upper-case canonicalised.
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info: |
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Intl.supportedValuesOf ( key )
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1. Let key be ? ToString(key).
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...
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4. Else if key is "currency", then
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a. Let list be ! AvailableCurrencies( ).
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...
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9. Return ! CreateArrayFromList( list ).
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AvailableCurrencies ( )
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The AvailableCurrencies abstract operation returns a List, ordered as if an
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Array of the same values had been sorted using %Array.prototype.sort% using
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undefined as comparefn, that contains unique, well-formed, and upper case
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canonicalized 3-letter ISO 4217 currency codes, identifying the currencies
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for which the implementation provides the functionality of Intl.DisplayNames
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and Intl.NumberFormat objects.
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includes: [compareArray.js]
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features: [Intl-enumeration]
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---*/
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const currencies = Intl.supportedValuesOf("currency");
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assert(Array.isArray(currencies), "Returns an Array object.");
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assert.sameValue(Object.getPrototypeOf(currencies), Array.prototype,
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"The array prototype is Array.prototype");
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const otherCurrencies = Intl.supportedValuesOf("currency");
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assert.notSameValue(otherCurrencies, currencies,
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"Returns a new array object for each call.");
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assert.compareArray(currencies, otherCurrencies.sort(),
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"The array is sorted.");
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assert.sameValue(new Set(currencies).size, currencies.length,
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"The array doesn't contain duplicates.");
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const codeRE = /^[A-Z]{3}$/;
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for (let currency of currencies) {
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assert(codeRE.test(currency), `${currency} is a 3-letter ISO 4217 currency code`);
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}
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