15.2.3.7-6-a-301.js (1115B)
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-301 6 description: > 7 Object.defineProperties - 'O' is an Arguments object, 'P' is an 8 array index named accessor property of 'O' but not defined in 9 [[ParameterMap]] of 'O', test TypeError is thrown when updating 10 the [[Configurable]] attribute value of 'P' which is not 11 configurable (10.6 [[DefineOwnProperty]] step 4) 12 includes: [propertyHelper.js] 13 ---*/ 14 15 16 var arg; 17 18 (function fun() { 19 arg = arguments; 20 }()); 21 22 function get_func() { 23 return 0; 24 } 25 26 Object.defineProperty(arg, "0", { 27 get: get_func, 28 enumerable: true, 29 configurable: false 30 }); 31 32 try { 33 Object.defineProperties(arg, { 34 "0": { 35 configurable: true 36 } 37 }); 38 throw new Test262Error("Expected an exception."); 39 } catch (e) { 40 verifyEqualTo(arg, "0", get_func()); 41 42 if (!(e instanceof TypeError)) { 43 throw new Test262Error("Expected TypeError, got " + e); 44 } 45 } 46 47 verifyProperty(arg, "0", { 48 enumerable: true, 49 configurable: false, 50 }); 51 52 reportCompare(0, 0);