Migrated several tests from blink to V8 repository.

test/webkit/regexp-non-bmp.js

 // 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.
 
 description(
-"Tests the behavior of Array.prototype.concat while the array is having a bad time due to one of the elements we are concatenating."
+'Tests that regular expressions treat non-BMP characters as two separate characters. '
++ 'From a Unicode correctness point of view this is wrong, but it is what other browsers do. '
++ 'And given that we store strings as UTF-16, it is also more efficient to implement. '
++ 'Also test some other cases related to UTF-8 and UTF-16.'
 );
 
-Object.defineProperty(Array.prototype, 0, { writable: false });
-shouldBe("[42].concat()", "[42]");
+var surrogatePair = String.fromCharCode(0xD800) + String.fromCharCode(0xDC00);
 
+shouldBe('/./.exec(surrogatePair).toString().length', '1');
+shouldBe('/\\D/.exec(surrogatePair).toString().length', '1');
+shouldBe('/\\S/.exec(surrogatePair).toString().length', '1');
+shouldBe('/\\W/.exec(surrogatePair).toString().length', '1');
+shouldBe('/[^x]/.exec(surrogatePair).toString().length', '1');
 
+debug('');
+
+shouldBe('/.{1,2}/.exec("!!" + String.fromCharCode(0xA1)).toString().length', '2');
+shouldBe('/./.exec("")', 'null');
+
+debug('');