mirror of https://github.com/tc39/test262.git
45 lines
1.8 KiB
JavaScript
45 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 can be used with NumberFormat.
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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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locale: [en]
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features: [Intl-enumeration]
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---*/
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const currencies = Intl.supportedValuesOf("currency");
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for (let currency of currencies) {
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let obj = new Intl.NumberFormat("en", {style: "currency", currency});
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assert.sameValue(obj.resolvedOptions().currency, currency,
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`${currency} is supported by NumberFormat`);
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}
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// Note: We can't test that additional currency values not present in |currencies|
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// aren't supported by Intl.NumberFormat, because PartitionNumberPattern defaults
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// to using the currency code itself when the currency is unsupported:
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//
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// PartitionNumberPattern, step 8.k.iii:
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// Let cd be an ILD String value representing currency after x in currencyDisplay form,
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// which may depend on x in languages having different plural forms. If the
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// implementation does not have such a representation of currency, use currency itself.
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