1 // Copyright 2013 the V8 project authors. All rights reserved. 2 // Copyright (C) 2005, 2006, 2007, 2008, 2009 Apple Inc. All rights reserved. 3 // 4 // Redistribution and use in source and binary forms, with or without 5 // modification, are permitted provided that the following conditions 6 // are met: 7 // 1. Redistributions of source code must retain the above copyright 8 // notice, this list of conditions and the following disclaimer. 9 // 2. Redistributions in binary form must reproduce the above copyright 10 // notice, this list of conditions and the following disclaimer in the 11 // documentation and/or other materials provided with the distribution. 12 // 13 // THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' AND ANY 14 // EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 15 // WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 16 // DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY 17 // DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 18 // (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 19 // LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON 20 // ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 21 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 22 // SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 23 24 description( 25 'Test for behavior of non-capturing groups, as described in <a href="http://blog.stevenlevithan.com/archives/npcg-javascript">' + 26 'a blog post by Steven Levithan</a> and <a href="http://bugs.webkit.org/show_bug.cgi?id=14931">bug 14931</a>.' 27 ); 28 29 shouldBe('/(x)?\\1y/.test("y")', 'true'); 30 shouldBe('/(x)?\\1y/.exec("y")', '["y", undefined]'); 31 shouldBe('/(x)?y/.exec("y")', '["y", undefined]'); 32 shouldBe('"y".match(/(x)?\\1y/)', '["y", undefined]'); 33 shouldBe('"y".match(/(x)?y/)', '["y", undefined]'); 34 shouldBe('"y".match(/(x)?\\1y/g)', '["y"]'); 35 shouldBe('"y".split(/(x)?\\1y/)', '["", undefined, ""]'); 36 shouldBe('"y".split(/(x)?y/)', '["", undefined, ""]'); 37 shouldBe('"y".search(/(x)?\\1y/)', '0'); 38 shouldBe('"y".replace(/(x)?\\1y/, "z")', '"z"'); 39 shouldBe('"y".replace(/(x)?y/, "$1")', '""'); 40 shouldBe('"y".replace(/(x)?\\1y/, function($0, $1){ return String($1); })', '"undefined"'); 41 shouldBe('"y".replace(/(x)?y/, function($0, $1){ return String($1); })', '"undefined"'); 42 shouldBe('"y".replace(/(x)?y/, function($0, $1){ return $1; })', '"undefined"'); 43
