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