11.4.1-4.a-8-s-strict.js (695B)
1 'use strict'; 2 // Copyright (c) 2012 Ecma International. All rights reserved. 3 // This code is governed by the BSD license found in the LICENSE file. 4 5 /*--- 6 info: | 7 This test is actually testing the [[Delete]] internal method (8.12.8). Since the 8 language provides no way to directly exercise [[Delete]], the tests are placed here. 9 esid: sec-delete-operator-runtime-semantics-evaluation 10 description: > 11 delete operator throws TypeError when deleting a non-configurable 12 data property in strict mode 13 flags: [onlyStrict] 14 ---*/ 15 16 var global = this; 17 // NaN (15.1.1.1) has [[Configurable]] set to false. 18 assert.throws(TypeError, function() { 19 delete global.NaN; 20 }); 21 22 reportCompare(0, 0);