// Copyright (c) 2012 Ecma International. All rights reserved. // This code is governed by the BSD license found in the LICENSE file. /*--- info: > This test is actually testing the [[Delete]] internal method (8.12.8). Since the language provides no way to directly exercise [[Delete]], the tests are placed here. es5id: 11.4.1-4.a-3 description: > delete operator returns false when deleting a non-configurable data property flags: [noStrict] ---*/ var o = {}; var desc = { value : 1, configurable: false }; // all other attributes default to false Object.defineProperty(o, "foo", desc); // Now, deleting o.foo should fail because [[Configurable]] on foo is false. var d = delete o.foo; assert.sameValue(d, false, 'd'); assert.sameValue(o.hasOwnProperty("foo"), true, 'o.hasOwnProperty("foo")');