1 // Copyright 2009 the V8 project authors. All rights reserved.
2 // Redistribution and use in source and binary forms, with or without
3 // modification, are permitted provided that the following conditions are
6 // * Redistributions of source code must retain the above copyright
7 // notice, this list of conditions and the following disclaimer.
8 // * Redistributions in binary form must reproduce the above
9 // copyright notice, this list of conditions and the following
10 // disclaimer in the documentation and/or other materials provided
11 // with the distribution.
12 // * Neither the name of Google Inc. nor the names of its
13 // contributors may be used to endorse or promote products derived
14 // from this software without specific prior written permission.
16 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
17 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
18 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
19 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
20 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
21 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
22 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
26 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 // Tests from http://blog.stevenlevithan.com/archives/npcg-javascript
30 assertEquals(true, /(x)?\1y/.test("y"));
31 assertEquals(["y", undefined], /(x)?\1y/.exec("y"));
32 assertEquals(["y", undefined], /(x)?y/.exec("y"));
33 assertEquals(["y", undefined], "y".match(/(x)?\1y/));
34 assertEquals(["y", undefined], "y".match(/(x)?y/));
35 assertEquals(["y"], "y".match(/(x)?\1y/g));
36 assertEquals(["", undefined, ""], "y".split(/(x)?\1y/));
37 assertEquals(["", undefined, ""], "y".split(/(x)?y/));
38 assertEquals(0, "y".search(/(x)?\1y/));
39 assertEquals("z", "y".replace(/(x)?\1y/, "z"));
40 assertEquals("", "y".replace(/(x)?y/, "$1"));
41 assertEquals("undefined", "y".replace(/(x)?\1y/,
45 assertEquals("undefined", "y".replace(/(x)?y/,
49 assertEquals("undefined", "y".replace(/(x)?y/,
54 // See https://bugzilla.mozilla.org/show_bug.cgi?id=476146
55 assertEquals(["bbc", "b"], /^(b+|a){1,2}?bc/.exec("bbc"));
56 assertEquals(["bbaa", "a", "", "a"],
57 /((\3|b)\2(a)){2,}/.exec("bbaababbabaaaaabbaaaabba"));
59 // From crbug.com/128821 - don't hang:
60 "".match(/((a|i|A|I|u|o|U|O)(s|c|b|c|d|f|g|h|j|k|l|m|n|p|q|r|s|t|v|w|x|y|z|B|C|D|F|G|H|J|K|L|M|N|P|Q|R|S|T|V|W|X|Y|Z)*) de\/da([.,!?\s]|$)/);