mirror of https://github.com/tc39/test262.git
41 lines
1.2 KiB
JavaScript
41 lines
1.2 KiB
JavaScript
// Copyright (c) 2012 Ecma International. All rights reserved.
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// This code is governed by the BSD license found in the LICENSE file.
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/*---
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es5id: 8.12.5-3-b_1
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description: >
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Changing the value of a data property should not affect it's
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non-value property descriptor attributes.
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includes: [runTestCase.js]
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---*/
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function testcase() {
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var origReduce = Array.prototype.reduce;
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var origDesc = Object.getOwnPropertyDescriptor(Array.prototype, "reduce");
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var newDesc;
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try {
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Array.prototype.reduce = function () {;};
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newDesc = Object.getOwnPropertyDescriptor(Array.prototype, "reduce");
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var descArray = [origDesc, newDesc];
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for (var j in descArray) { //Ensure no attributes are magically added to newDesc
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for (var i in descArray[j]) {
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if (i==="value") {
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if (origDesc[i]===newDesc[i]) {
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return false;
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}
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}
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else if (origDesc[i]!==newDesc[i]) {
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return false;
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}
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}
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}
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return true;
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} finally {
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Array.prototype.reduce = origReduce;
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}
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}
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runTestCase(testcase);
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