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Bug 1318017: Call GetPrototypeFromConstructor for generator/async function and Intl constructors

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[Depends on] Bug 755821: Function() should use the parser's argument
parsing code
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janekptacijarabaci 2018-03-16 09:04:55 +01:00 • committed by Roy Tam
commit e7fdd26fde
11 changed files with 586 additions and 53 deletions
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81
js/src/tests/Intl/DateTimeFormat/construct-newtarget.js Normal file
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// |reftest| skip-if(!this.hasOwnProperty("Intl"))
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
// Test subclassing %Intl.DateTimeFormat% works correctly.
class MyDateTimeFormat extends Intl.DateTimeFormat {}
var obj = new MyDateTimeFormat();
assertEq(obj instanceof MyDateTimeFormat, true);
assertEq(obj instanceof Intl.DateTimeFormat, true);
assertEq(Object.getPrototypeOf(obj), MyDateTimeFormat.prototype);
obj = Reflect.construct(MyDateTimeFormat, []);
assertEq(obj instanceof MyDateTimeFormat, true);
assertEq(obj instanceof Intl.DateTimeFormat, true);
assertEq(Object.getPrototypeOf(obj), MyDateTimeFormat.prototype);
obj = Reflect.construct(MyDateTimeFormat, [], MyDateTimeFormat);
assertEq(obj instanceof MyDateTimeFormat, true);
assertEq(obj instanceof Intl.DateTimeFormat, true);
assertEq(Object.getPrototypeOf(obj), MyDateTimeFormat.prototype);
obj = Reflect.construct(MyDateTimeFormat, [], Intl.DateTimeFormat);
assertEq(obj instanceof MyDateTimeFormat, false);
assertEq(obj instanceof Intl.DateTimeFormat, true);
assertEq(Object.getPrototypeOf(obj), Intl.DateTimeFormat.prototype);
// Set a different constructor as NewTarget.
obj = Reflect.construct(MyDateTimeFormat, [], Array);
assertEq(obj instanceof MyDateTimeFormat, false);
assertEq(obj instanceof Intl.DateTimeFormat, false);
assertEq(obj instanceof Array, true);
assertEq(Object.getPrototypeOf(obj), Array.prototype);
obj = Reflect.construct(Intl.DateTimeFormat, [], Array);
assertEq(obj instanceof Intl.DateTimeFormat, false);
assertEq(obj instanceof Array, true);
assertEq(Object.getPrototypeOf(obj), Array.prototype);
// The prototype defaults to %DateTimeFormatPrototype% if null.
function NewTargetNullPrototype() {}
NewTargetNullPrototype.prototype = null;
obj = Reflect.construct(Intl.DateTimeFormat, [], NewTargetNullPrototype);
assertEq(obj instanceof Intl.DateTimeFormat, true);
assertEq(Object.getPrototypeOf(obj), Intl.DateTimeFormat.prototype);
obj = Reflect.construct(MyDateTimeFormat, [], NewTargetNullPrototype);
assertEq(obj instanceof MyDateTimeFormat, false);
assertEq(obj instanceof Intl.DateTimeFormat, true);
assertEq(Object.getPrototypeOf(obj), Intl.DateTimeFormat.prototype);
// "prototype" property is retrieved exactly once.
var trapLog = [], getLog = [];
var ProxiedConstructor = new Proxy(Intl.DateTimeFormat, new Proxy({
get(target, propertyKey, receiver) {
getLog.push(propertyKey);
return Reflect.get(target, propertyKey, receiver);
}
}, {
get(target, propertyKey, receiver) {
trapLog.push(propertyKey);
return Reflect.get(target, propertyKey, receiver);
}
}));
obj = Reflect.construct(Intl.DateTimeFormat, [], ProxiedConstructor);
assertEqArray(trapLog, ["get"]);
assertEqArray(getLog, ["prototype"]);
assertEq(obj instanceof Intl.DateTimeFormat, true);
assertEq(Object.getPrototypeOf(obj), Intl.DateTimeFormat.prototype);
if (typeof reportCompare === "function")
reportCompare(0, 0);