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// Copyright (C) 2021 André Bargull. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
esid: sec-intl.supportedvaluesof
description: >
The returned "currency" values are sorted, unique, and upper-case canonicalised.
info: |
Intl.supportedValuesOf ( key )
1. Let key be ? ToString(key).
...
4. Else if key is "currency", then
a. Let list be ! AvailableCurrencies( ).
...
9. Return ! CreateArrayFromList( list ).
AvailableCurrencies ( )
The AvailableCurrencies abstract operation returns a List, ordered as if an
Array of the same values had been sorted using %Array.prototype.sort% using
undefined as comparefn, that contains unique, well-formed, and upper case
canonicalized 3-letter ISO 4217 currency codes, identifying the currencies
for which the implementation provides the functionality of Intl.DisplayNames
and Intl.NumberFormat objects.
includes: [compareArray.js]
features: [Intl-enumeration]
---*/
const currencies = Intl.supportedValuesOf("currency");
assert(Array.isArray(currencies), "Returns an Array object.");
assert.sameValue(Object.getPrototypeOf(currencies), Array.prototype,
"The array prototype is Array.prototype");
const otherCurrencies = Intl.supportedValuesOf("currency");
assert.notSameValue(otherCurrencies, currencies,
"Returns a new array object for each call.");
assert.compareArray(currencies, otherCurrencies.sort(),
"The array is sorted.");
assert.sameValue(new Set(currencies).size, currencies.length,
"The array doesn't contain duplicates.");
const codeRE = /^[A-Z]{3}$/;
for (let currency of currencies) {
assert(codeRE.test(currency), `${currency} is a 3-letter ISO 4217 currency code`);
}
reportCompare(0, 0);
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