15.2.3.7-6-a-175.js (761B)
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: 15.2.3.7-6-a-175 6 description: > 7 Object.defineProperties - 'O' is an Array, 'P' is the length 8 property of 'O', the [[Value]] field of 'desc' is less than value 9 of the length property, test value of the length property is set 10 to the last non-configurable index named property of 'O' plus 1 11 (15.4.5.1 step 3.l.iii.1) 12 ---*/ 13 14 var arr = [0, 1, 2, 3]; 15 16 Object.defineProperty(arr, "1", { 17 configurable: false 18 }); 19 assert.throws(TypeError, function() { 20 Object.defineProperties(arr, { 21 length: { 22 value: 1 23 } 24 }); 25 }); 26 assert.sameValue(arr.length, 2, 'arr.length'); 27 28 reportCompare(0, 0);