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