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// |reftest| skip-if(!this.hasOwnProperty("Intl"))
function IsIntlService(c) {
return typeof c === "function" &&
c.hasOwnProperty("prototype") &&
c.prototype.hasOwnProperty("resolvedOptions");
}
function IsObject(o) {
return Object(o) === o;
}
function thisValues() {
const intlConstructors = Object.getOwnPropertyNames(Intl).map(name => Intl[name]).filter(IsIntlService);
return [
// Primitive values.
...[undefined, null, true, "abc", Symbol(), 123],
// Object values.
...[{}, [], /(?:)/, function(){}, new Proxy({}, {})],
// Intl objects.
...[].concat(...intlConstructors.map(ctor => {
let args = [];
if (ctor === Intl.DisplayNames) {
// Intl.DisplayNames can't be constructed without any arguments.
args = [undefined, {type: "language"}];
}
return [
// Instance of an Intl constructor.
new ctor(...args),
// Instance of a subclassed Intl constructor.
new class extends ctor {}(...args),
// Object inheriting from an Intl constructor prototype.
Object.create(ctor.prototype),
// Intl object not inheriting from its default prototype.
Object.setPrototypeOf(new ctor(...args), Object.prototype),
];
})),
];
}
// Invoking [[Call]] for Intl.Collator always returns a new Collator instance.
for (let thisValue of thisValues()) {
let obj = Intl.Collator.call(thisValue);
assertEq(Object.is(obj, thisValue), false);
assertEq(obj instanceof Intl.Collator, true);
// Ensure Intl.[[FallbackSymbol]] wasn't installed on |thisValue|.
if (IsObject(thisValue))
assertEqArray(Object.getOwnPropertySymbols(thisValue), []);
}
// Intl.Collator doesn't use the legacy Intl constructor compromise semantics.
for (let thisValue of thisValues()) {
// Ensure instanceof operator isn't invoked for Intl.Collator.
Object.defineProperty(Intl.Collator, Symbol.hasInstance, {
get() {
assertEq(false, true, "@@hasInstance operator called");
}, configurable: true
});
let obj = Intl.Collator.call(thisValue);
delete Intl.Collator[Symbol.hasInstance];
assertEq(Object.is(obj, thisValue), false);
assertEq(obj instanceof Intl.Collator, true);
}
if (typeof reportCompare === "function")
reportCompare(true, true);