15.2.3.7-6-a-169.js (1162B)
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-169 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 data property with large index named in 'O' that overrides 11 inherited accessor property can stop deleting index named 12 properties (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 configurable: false 20 }); 21 22 Object.defineProperty(Array.prototype, "1", { 23 get: function() { 24 return 2; 25 }, 26 configurable: true 27 }); 28 29 Object.defineProperties(arr, { 30 length: { 31 value: 1 32 } 33 }); 34 }); 35 assert.sameValue(arr.length, 2, 'arr.length'); 36 assert(arr.hasOwnProperty("1"), 'arr.hasOwnProperty("1") !== true'); 37 assert.sameValue(arr[0], 0, 'arr[0]'); 38 assert.sameValue(arr[1], 1, 'arr[1]'); 39 assert.sameValue(Array.prototype[1], 2, 'Array.prototype[1]'); 40 41 reportCompare(0, 0);