5ab3140dfb
PR-URL: https://github.com/nodejs/node/pull/54536 Reviewed-By: Antoine du Hamel <duhamelantoine1995@gmail.com> Reviewed-By: Jiawen Geng <technicalcute@gmail.com> Reviewed-By: Marco Ippolito <marcoippolito54@gmail.com> Reviewed-By: Richard Lau <rlau@redhat.com>
58 lines
2.0 KiB
JavaScript
58 lines
2.0 KiB
JavaScript
// Copyright 2024 the V8 project authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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// Flags: --allow-natives-syntax
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(function() {
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let obj = {};
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// Add a property
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Object.defineProperty(obj, "__proto__", { enumerable: true, writable: true });
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// Adds side-step from {__proto__} -> {}
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Object.assign({}, obj);
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// Generalizes {__proto__}
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Object.defineProperty(obj, "__proto__", { value: 0 });
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})();
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(function() {
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var a = {};
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a.asdf = 42;
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Object.defineProperty(Object.prototype, "asdf", {get(){assertTrue(false);},
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set(v){Object.defineProperty(this, "asdf", {value:100})}});
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assertTrue(Object.assign({}, a).asdf === 100);
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assertTrue(Object.assign({}, a).asdf === 100);
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assertTrue(Object.assign({}, a).asdf === 100);
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})();
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(function() {
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var a = {};
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a.x = 42;
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var b = {};
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b.y = 42;
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Object.assign({}, a);
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Object.defineProperty(Object.prototype, "x", {set(v) {}, configurable: true});
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assertTrue(Object.assign({}, a).x === undefined);
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assertTrue(Object.assign({}, b).y === 42);
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assertTrue(Object.assign({}, a).x === undefined);
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assertTrue(Object.assign({}, b).y === 42);
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Object.defineProperty(Object.prototype, "y", {set(v) {}, configurable: true});
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assertTrue(Object.assign({}, a).x === undefined);
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assertTrue(Object.assign({}, b).y === undefined);
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assertTrue(Object.assign({}, a).x === undefined);
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assertTrue(Object.assign({}, b).y === undefined);
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})();
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(function() {
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let a = {};
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a.qwer1 = 42;
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Object.defineProperty(Object.prototype, "qwer1", { writable: false });
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assertThrows(function(){ Object.assign({}, a) });
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assertThrows(function(){ Object.assign({}, a) });
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a = {};
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a.qwer2 = 42;
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Object.assign({}, a);
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Object.assign({}, a);
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Object.defineProperty(Object.prototype, "qwer2", { configurable: false });
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assertThrows(function(){ Object.assign({}, a) });
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assertThrows(function(){ Object.assign({}, a) });
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})();
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