nashorn/test/script/basic/NASHORN-490.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.
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 */

/**
 * NASHORN-490 : Inherited index properties is problematic for Array.prototype.pop function
 *
 * @test
 * @run
 */

Array.prototype[1] = 1;
var x = [0];
x.length = 2;

var obj = x.pop();
if (obj !== 1) {
  fail('Array.prototype[1] = 1; x=[0]; x.length = 2; x.pop() == 1. Actual: ' + (obj));
}

delete Array.prototype[1];

Object.prototype[1] = 1;
var y = [0];
y.length = 2;
var obj = y.pop();
if (obj !== 1) {
  fail('Object.prototype[1] = 1; y=[0]; y.length = 2; y.pop() == 1. Actual: ' + (obj));
}