15.2.3.7-6-a-172.js (1048B)
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-172 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 the [[Configurable]] attribute of 10 own accessor property with large index named in 'O' that overrides 11 inherited data property can stop deleting index named properties 12 (15.4.5.1 step 3.l.ii) 13 ---*/ 14 15 var arr = [0, 1]; 16 17 assert.throws(TypeError, function() { 18 Object.defineProperty(arr, "1", { 19 get: function() { 20 return 2; 21 }, 22 configurable: false 23 }); 24 25 Array.prototype[1] = 3; 26 27 Object.defineProperties(arr, { 28 length: { 29 value: 1 30 } 31 }); 32 }); 33 assert.sameValue(arr.length, 2, 'arr.length'); 34 assert(arr.hasOwnProperty("1"), 'arr.hasOwnProperty("1") !== true'); 35 assert.sameValue(arr[0], 0, 'arr[0]'); 36 assert.sameValue(arr[1], 2, 'arr[1]'); 37 38 reportCompare(0, 0);