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 4 // met: 5 // 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. 15 // 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. 27 28 // Tests from http://blog.stevenlevithan.com/archives/npcg-javascript 29 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/, 42 function($0, $1){ 43 return String($1); 44 })); 45 assertEquals("undefined", "y".replace(/(x)?y/, 46 function($0, $1){ 47 return String($1); 48 })); 49 assertEquals("undefined", "y".replace(/(x)?y/, 50 function($0, $1){ 51 return $1; 52 })); 53 54 // See https://bugzilla.mozilla.org/show_bug.cgi?id=476146 55 assertEquals(["bbc", "b"], /^(b+|a){1,2}?bc/.exec("bbc")); 56 assertEquals(["bbaa", "a", "", "a"], 57 /((\3|b)\2(a)){2,}/.exec("bbaababbabaaaaabbaaaabba")); 58 59 // From crbug.com/128821 - don't hang: 60 "".match(/((a|i|A|I|u|o|U|O)(s|c|b|c|d|f|g|h|j|k|l|m|n|p|q|r|s|t|v|w|x|y|z|B|C|D|F|G|H|J|K|L|M|N|P|Q|R|S|T|V|W|X|Y|Z)*) de\/da([.,!?\s]|$)/); 61
