test/script/basic/NASHORN-172.js

/*
 * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 */

/**
 * NASHORN-172 :  delete of undeclared global variable returns false.
 *
 * @test
 * @run
 */

if (delete x !== true) {
    fail('#1: delete x === true');
}

if (delete this.x !== true) {
    fail('#2: delete this.x === true');
}

var y = 23;
if (delete y != false) {
    fail('#3: can delete declared var y');
}

if (delete this.y != false) {
    fail('#4: can delete declared var using this.y');
}

foo = 'hello';
if (delete foo != true) {
    fail('#5: can not delete "foo"');
}

if (typeof foo != 'undefined') {
    fail('#6: huh? "foo" is not undefined');
}