/*
 * Copyright (c) 2016, 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.
 */

/**
 * JDK-8137240: Negative lookahead in RegEx breaks backreference
 *
 * @test
 * @run
 */


Assert.assertEquals('aa'.replace(/(a)(?!b)\1/gm, 'c'), 'c');

var result = 'aa'.match(/(a)(?!b)\1/);
Assert.assertTrue(result.length === 2);
Assert.assertTrue(result[0] === 'aa');
Assert.assertTrue(result[1] === 'a');

result = 'aa'.match(/(a)(?!(b))\2(a)/);
Assert.assertTrue(result.length === 4);
Assert.assertTrue(result[0] === 'aa');
Assert.assertTrue(result[1] === 'a');
Assert.assertTrue(result[2] === undefined);
Assert.assertTrue(result[3] === 'a');