11.4.1-4.a-5.js (733B)
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 info: | 6 This test is actually testing the [[Delete]] internal method (8.12.8). Since the 7 language provides no way to directly exercise [[Delete]], the tests are placed here. 8 esid: sec-delete-operator-runtime-semantics-evaluation 9 description: > 10 delete operator returns false when deleting the declaration of the environment object 11 inside 'with' 12 flags: [noStrict] 13 ---*/ 14 15 var o = new Object(); 16 o.x = 1; 17 var d; 18 with(o) { 19 d = delete o; 20 } 21 22 assert.sameValue(d, false, 'd'); 23 assert.sameValue(typeof o, 'object', 'typeof(o)'); 24 assert.sameValue(o.x, 1, 'o.x'); 25 26 reportCompare(0, 0);