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// Copyright (C) 2019 Leo Balter. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
esid: sec-Intl.DisplayNames
description: >
CanonicalizeLocaleList tries to fetch length from Object.
info: |
Intl.DisplayNames ( locales , options )
1. If NewTarget is undefined, throw a TypeError exception.
2. Let displayNames be ? OrdinaryCreateFromConstructor(NewTarget, "%DisplayNamesPrototype%",
« [[InitializedDisplayNames]], [[Locale]], [[Style]], [[Type]], [[Fallback]], [[Fields]] »).
3. Let requestedLocales be ? CanonicalizeLocaleList(locales).
...
12. Let type be ? GetOption(options, "type", "string", « "language", "region", "script", "currency" », undefined).
13. If type is undefined, throw a TypeError exception.
...
CanonicalizeLocaleList ( locales )
1. If locales is undefined, then
a. Return a new empty List.
2. Let seen be a new empty List.
3. If Type(locales) is String, then
a. Let O be CreateArrayFromList(« locales »).
4. Else,
a. Let O be ? ToObject(locales).
5. Let len be ? ToLength(? Get(O, "length")).
features: [Intl.DisplayNames, Symbol]
locale: [en]
includes: [compareArray.js]
---*/
let calls = [];
let symbol = Symbol();
Symbol.prototype.length = 1;
Object.defineProperty(Symbol.prototype, 'length', {
get() {
assert.notSameValue(this, symbol, 'this is an object from given symbol');
assert.sameValue(this.valueOf(), symbol, 'internal value is the symbol');
assert(this instanceof Symbol);
calls.push('length');
return 1;
}
});
Object.defineProperty(Symbol.prototype, '0', {
get() {
assert.notSameValue(this, symbol, 'this is an object from given symbol');
assert.sameValue(this.valueOf(), symbol, 'internal value is the symbol');
assert(this instanceof Symbol);
calls.push('0');
return 'en';
}
});
new Intl.DisplayNames(symbol, {type: 'language'});
assert.compareArray(calls, ['length', '0']);
reportCompare(0, 0);
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