JSTests/ChakraCore/test/Date/date_cache_bug.js

//-------------------------------------------------------------------------------------------------------
// Copyright (C) Microsoft. All rights reserved.
// Licensed under the MIT license. See LICENSE.txt file in the project root for full license information.
//-------------------------------------------------------------------------------------------------------

WScript.Echo("Checking for new Date() with DST issues: ");
WScript.Echo("Backward loop starts");
for (var working = new Date(2014, 2, 1) ; working.getFullYear() > 1940;)
{                
        var dayOfMonth = working.getDate();
        var nextYear = working.getFullYear();
        var nextMonth = working.getMonth();
        dayOfMonth -= 1;

        working = new Date(nextYear, nextMonth, dayOfMonth);
        if (working.getHours() > 0)
        {
                WScript.Echo("" + working + "  from:" + nextYear + "," + nextMonth + "," + dayOfMonth + "");

                dayOfMonth--;
                working = new Date(nextYear, nextMonth, dayOfMonth); //skip over this date
        }                              
}

WScript.Echo("Forwards loop starts");
for (var working = new Date(1940, 0, 0) ; working.getFullYear() < 2014;)
{
        var dayOfMonth = working.getDate();
        var nextYear = working.getFullYear();
        var nextMonth = working.getMonth();
        dayOfMonth += 1;

        working = new Date(nextYear, nextMonth, dayOfMonth);

        if (working.getHours() > 0)
        {
                WScript.Echo("" + working + "  from:" + nextYear + "," + nextMonth + "," + dayOfMonth + "");

                dayOfMonth++;
                working = new Date(nextYear, nextMonth, dayOfMonth); //skip over this date
        }                              
}

WScript.Echo("done.");