15.2.3.7-6-a-165.js (903B)
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-165 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 length property is decreased by 10 1 (15.4.5.1 step 3.l.i) 11 ---*/ 12 13 var arr = [0, 1, 2]; 14 15 Object.defineProperty(arr, "1", { 16 configurable: false 17 }); 18 19 Object.defineProperty(arr, "2", { 20 configurable: true 21 }); 22 assert.throws(TypeError, function() { 23 Object.defineProperties(arr, { 24 length: { 25 value: 1 26 } 27 }); 28 }); 29 assert.sameValue(arr.length, 2, 'arr.length'); 30 assert.sameValue(arr.hasOwnProperty("2"), false, 'arr.hasOwnProperty("2")'); 31 assert.sameValue(arr[0], 0, 'arr[0]'); 32 assert.sameValue(arr[1], 1, 'arr[1]'); 33 34 reportCompare(0, 0);