Update the mozilla tests to new version (as of 2010-06-29).

mozilla-tests/ecma_3/Number/15.7.4.6-1.js

 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
 /* ***** BEGIN LICENSE BLOCK *****
  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
  *
  * The contents of this file are subject to the Mozilla Public License Version
  * 1.1 (the "License"); you may not use this file except in compliance with
  * the License. You may obtain a copy of the License at
  * http://www.mozilla.org/MPL/
  *
  * Software distributed under the License is distributed on an "AS IS" basis,
@@ skipping 49 matching lines @@
 var expect= '';
 var expectedvalues = [];
 var testNum = 77.1234;
 
 
 status = 'Section A of test: no error intended!';
 actual = testNum.toExponential(4);
 expect = '7.7123e+1';
 captureThis();
 
+status = 'Section B of test: Infinity.toExponential() with out-of-range fractionDigits';
+actual = Number.POSITIVE_INFINITY.toExponential(-3);
+expect = 'Infinity';
+captureThis();
+
+status = 'Section C of test: -Infinity.toExponential() with out-of-range fractionDigits';
+actual = Number.NEGATIVE_INFINITY.toExponential(-3);
+expect = '-Infinity';
+captureThis();
+
+status = 'Section D of test: NaN.toExponential() with out-of-range fractionDigits';
+actual = Number.NaN.toExponential(-3);
+expect = 'NaN';
+captureThis();
+
 
 ///////////////////////////    OOPS....    ///////////////////////////////
 /*************************************************************************
  * 15.7.4.6 Number.prototype.toExponential(fractionDigits)
  *
  * An implementation is permitted to extend the behaviour of toExponential
  * for values of fractionDigits less than 0 or greater than 20. In this
  * case toExponential would not necessarily throw RangeError for such values.
 
 status = 'Section B of test: expect RangeError because fractionDigits < 0';
@@ skipping 45 matching lines @@
   return cnNoErrorCaught;
 }
 
 
 function isRangeError(obj)
 {
   if (obj instanceof RangeError)
     return cnIsRangeError;
   return cnNotRangeError;
 }