15.2.3.6-4-123.js (672B)
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: 15.2.3.6-4-123 6 description: > 7 Object.defineProperty - 'O' is an Array, 'name' is the length 8 property of 'O', the [[Value]] field of 'desc' is absent, test 9 TypeError is thrown when updating the [[Writable]] attribute of 10 the length property from false to true (15.4.5.1 step 3.a.i) 11 ---*/ 12 13 var arrObj = []; 14 assert.throws(TypeError, function() { 15 Object.defineProperty(arrObj, "length", { 16 writable: false 17 }); 18 Object.defineProperty(arrObj, "length", { 19 writable: true 20 }); 21 }); 22 23 reportCompare(0, 0);