15.2.3.6-4-172.js (929B)
1 // Copyright (c) 2012 Ecma International. All rights reserved. 2 // This code is governed by the BSD license found in the LICENSE file. 3 4 /*--- 5 es5id: 15.2.3.6-4-172 6 description: > 7 Object.defineProperty - 'O' is an Array, 'name' is the length 8 property of 'O', the [[Value]] field of 'desc' is less than value 9 of the length property, test the [[Configurable]] attribute of 10 own data property with large index named in 'O' that overrides an 11 inherited data property can stop deleting index named properties 12 (15.4.5.1 step 3.l.ii) 13 ---*/ 14 15 var arrObj = [0, 1]; 16 17 assert.throws(TypeError, function() { 18 Object.defineProperty(arrObj, "1", { 19 configurable: false 20 }); 21 22 Array.prototype[1] = 2; 23 Object.defineProperty(arrObj, "length", { 24 value: 1 25 }); 26 }); 27 assert.sameValue(arrObj.length, 2, 'arrObj.length'); 28 assert(arrObj.hasOwnProperty("1"), 'arrObj.hasOwnProperty("1") !== true'); 29 30 reportCompare(0, 0);