mirror of
https://github.com/tc39/test262.git
synced 2025-11-03 21:24:30 +01:00
69 lines
2.1 KiB
JavaScript
69 lines
2.1 KiB
JavaScript
// Copyright (C) 2015 the V8 project authors. All rights reserved.
|
|
// This code is governed by the BSD license found in the LICENSE file.
|
|
/*---
|
|
es6id: 26.1.13
|
|
description: >
|
|
Return false if target property turns to a data descriptor and receiver
|
|
property is an accessor descriptor.
|
|
info: |
|
|
26.1.13 Reflect.set ( target, propertyKey, V [ , receiver ] )
|
|
|
|
...
|
|
4. If receiver is not present, then
|
|
a. Let receiver be target.
|
|
5. Return target.[[Set]](key, V, receiver).
|
|
|
|
9.1.9 [[Set]] ( P, V, Receiver)
|
|
|
|
...
|
|
4. If ownDesc is undefined, then
|
|
a. Let parent be O.[[GetPrototypeOf]]().
|
|
b. ReturnIfAbrupt(parent).
|
|
c. If parent is not null, then
|
|
i. Return parent.[[Set]](P, V, Receiver).
|
|
d. Else,
|
|
ii. Let ownDesc be the PropertyDescriptor{[[Value]]: undefined,
|
|
[[Writable]]: true, [[Enumerable]]: true, [[Configurable]]: true}.
|
|
5. If IsDataDescriptor(ownDesc) is true, then
|
|
a. If ownDesc.[[Writable]] is false, return false.
|
|
b. If Type(Receiver) is not Object, return false.
|
|
c. Let existingDescriptor be Receiver.[[GetOwnProperty]](P).
|
|
d. ReturnIfAbrupt(existingDescriptor).
|
|
e. If existingDescriptor is not undefined, then
|
|
i. If IsAccessorDescriptor(existingDescriptor) is true, return false.
|
|
...
|
|
features: [Reflect, Reflect.set]
|
|
---*/
|
|
|
|
var receiver = {};
|
|
var fn = function() {};
|
|
Object.defineProperty(receiver, 'p', {
|
|
set: fn
|
|
});
|
|
|
|
var o1 = {};
|
|
var result = Reflect.set(o1, 'p', 42, receiver);
|
|
assert.sameValue(
|
|
result, false,
|
|
'target has no own `p` and receiver.p has an accessor descriptor'
|
|
);
|
|
assert.sameValue(
|
|
Object.getOwnPropertyDescriptor(receiver, 'p').set, fn,
|
|
'receiver.p is not changed'
|
|
);
|
|
assert.sameValue(o1.hasOwnProperty('p'), false, 'target.p is not set');
|
|
|
|
var o2 = {
|
|
p: 43
|
|
};
|
|
result = Reflect.set(o2, 'p', 42, receiver);
|
|
assert.sameValue(
|
|
result, false,
|
|
'target.p has a data descriptor and receiver.p has an accessor descriptor'
|
|
);
|
|
assert.sameValue(
|
|
Object.getOwnPropertyDescriptor(receiver, 'p').set, fn,
|
|
'receiver.p is not changed'
|
|
);
|
|
assert.sameValue(o2.p, 43, 'target.p is not changed');
|