15.2.3.7-6-a-163.js (888B)
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-163 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 [[Writable]] attribute of the 10 length property is set to false at last after deleting properties 11 with large index named if the [[Writable]] field of 'desc' is 12 false (15.4.5.1 step 3.i.ii) 13 includes: [propertyHelper.js] 14 ---*/ 15 16 17 var arr = [0, 1]; 18 19 Object.defineProperties(arr, { 20 length: { 21 value: 1, 22 writable: false 23 } 24 }); 25 26 //try to overwrite length value of arr 27 verifyProperty(arr, "length", { 28 value: 1, 29 writable: false, 30 }); 31 32 assert(!arr.hasOwnProperty("1")); 33 assert.sameValue(arr[0], 0); 34 35 reportCompare(0, 0);