Migrate more tests from blink repository.

test/webkit/fast/js/toString-overrides.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.
 
+// 15.4 Array Objects
+// (c) 2001 Harri Porten <porten@kde.org>
+
 description(
-"This test checks that high-byte characters in comments do not crash or cause parser errors."
+'This test checks for regression against <a href="https://bugs.webkit.org/show_bug.cgi?id=4147">4147: Array.toString() and toLocaleString() improvements from KDE KJS</a>.'
 );
 
-// Some high-byte characters: ¸´Ñ¡»ò²»¸´Ñ¡ËùÓеÄÁбí¶àÑ¡¿ò
-function runTest(_a, throws)
-{
-    testPassed();
+// backup
+var backupNumberToString = Number.prototype.toString;
+var backupNumberToLocaleString = Number.prototype.toLocaleString;
+var backupRegExpToString = RegExp.prototype.toString;
+var backupRegExpToLocaleString = RegExp.prototype.toLocaleString;
+
+// change functions
+Number.prototype.toString = function() { return "toString"; }
+Number.prototype.toLocaleString = function() { return "toLocaleString"; }
+RegExp.prototype.toString = function() { return "toString2"; }
+RegExp.prototype.toLocaleString = function() { return "toLocaleString2"; }
+
+// the tests
+shouldBe("[1].toString()", "'1'");
+shouldBe("[1].toLocaleString()", "'toLocaleString'");
+Number.prototype.toLocaleString = "invalid";
+shouldBe("[1].toLocaleString()", "'1'");
+shouldBe("[/r/].toString()", "'toString2'");
+shouldBe("[/r/].toLocaleString()", "'toLocaleString2'");
+RegExp.prototype.toLocaleString = "invalid";
+shouldBe("[/r/].toLocaleString()", "'toString2'");
+
+var caught = false;
+try {
+[{ toString : 0 }].toString();
+} catch (e) {
+caught = true;
 }
+shouldBeTrue("caught");
 
-/*
-Over 1024 bytes to ensure precompilation caching is triggered.
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-*/
+// restore
+Number.prototype.toString = backupNumberToString;
+Number.prototype.toLocaleString = backupNumberToLocaleString;
+RegExp.prototype.toString = backupRegExpToString;
+RegExp.prototype.toLocaleString = backupRegExpToLocaleString;