proto-from-ctor-realm.js

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// |reftest| skip-if(!this.hasOwnProperty('WeakRef')) -- WeakRef is not enabled unconditionally

// Copyright (C) 2019 Leo Balter. All rights reserved.

// This code is governed by the BSD license found in the LICENSE file.

/*---

esid: sec-weak-ref-target

description: Default [[Prototype]] value derived from realm of the newTarget

info: |

  WeakRef( target )

...

  3. Let weakRef be ? OrdinaryCreateFromConstructor(NewTarget,  '%WeakRefPrototype%', « [[Target]] »).

  4. Perfom ! KeepDuringJob(target).

  5. Set weakRef.[[Target]] to target.

  6. Return weakRef.

  OrdinaryCreateFromConstructor ( constructor, intrinsicDefaultProto [ , internalSlotsList ] )

...

  2. Let proto be ? GetPrototypeFromConstructor(constructor, intrinsicDefaultProto).

  3. Return ObjectCreate(proto, internalSlotsList).

  GetPrototypeFromConstructor ( constructor, intrinsicDefaultProto )

  3. Let proto be ? Get(constructor, 'prototype').

  4. If Type(proto) is not Object, then

    a. Let realm be ? GetFunctionRealm(constructor).

    b. Set proto to realm's intrinsic object named intrinsicDefaultProto.

  5. Return proto.

features: [WeakRef, cross-realm, Reflect, Symbol]

---*/

var other = $262.createRealm().global;

var newTarget = new other.Function();

var wr;

newTarget.prototype = undefined;

wr = Reflect.construct(WeakRef, [{}], newTarget);

assert.sameValue(Object.getPrototypeOf(wr), other.WeakRef.prototype, 'newTarget.prototype is undefined');

newTarget.prototype = null;

wr = Reflect.construct(WeakRef, [{}], newTarget);

assert.sameValue(Object.getPrototypeOf(wr), other.WeakRef.prototype, 'newTarget.prototype is null');

newTarget.prototype = true;

wr = Reflect.construct(WeakRef, [{}], newTarget);

assert.sameValue(Object.getPrototypeOf(wr), other.WeakRef.prototype, 'newTarget.prototype is a Boolean');

newTarget.prototype = '';

wr = Reflect.construct(WeakRef, [{}], newTarget);

assert.sameValue(Object.getPrototypeOf(wr), other.WeakRef.prototype, 'newTarget.prototype is a String');

newTarget.prototype = Symbol();

wr = Reflect.construct(WeakRef, [{}], newTarget);

assert.sameValue(Object.getPrototypeOf(wr), other.WeakRef.prototype, 'newTarget.prototype is a Symbol');

newTarget.prototype = 1;

wr = Reflect.construct(WeakRef, [{}], newTarget);

assert.sameValue(Object.getPrototypeOf(wr), other.WeakRef.prototype, 'newTarget.prototype is a Number');

reportCompare(0, 0);