Migrate more tests from blink repository.

test/webkit/fast/js/regexp-lastindex.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(
-"This tests that array construction via a host call works."
+'Test for regression against <a href="https://bugs.webkit.org/show_bug.cgi?id=5602">REGRESSION: RegExp("[^\\s$]+", "g") returns extra matches</a>'
 );
 
-function constructArray(arrayConstructor) {
-    return new arrayConstructor(100);
-}
+var re = new RegExp("[^\\s$]+", "g");
+var accumulate = "";
+var match;
+shouldBe('while (match = re.exec("  abcdefg")) accumulate += match + "; "; accumulate', '"abcdefg; "');
 
-for (var i = 0; i < 3; ++i) {
-    var array = constructArray(Array);
-    shouldBeTrue("array instanceof Array");
-    shouldBe("array.length", "100");
-}
+var re = new RegExp(/\d/g);
+accumulate = "";
+shouldBe('while (match = re.exec("123456789")) accumulate += match + "; "; accumulate', '"1; 2; 3; 4; 5; 6; 7; 8; 9; "');