1/*
2 * Copyright (c) 2016, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
23
24/**
25 * JDK-8137240: Negative lookahead in RegEx breaks backreference
26 *
27 * @test
28 * @run
29 */
30
31
32Assert.assertEquals('aa'.replace(/(a)(?!b)\1/gm, 'c'), 'c');
33
34var result = 'aa'.match(/(a)(?!b)\1/);
35Assert.assertTrue(result.length === 2);
36Assert.assertTrue(result[0] === 'aa');
37Assert.assertTrue(result[1] === 'a');
38
39result = 'aa'.match(/(a)(?!(b))\2(a)/);
40Assert.assertTrue(result.length === 4);
41Assert.assertTrue(result[0] === 'aa');
42Assert.assertTrue(result[1] === 'a');
43Assert.assertTrue(result[2] === undefined);
44Assert.assertTrue(result[3] === 'a');
45