[jira] Commented: (LANG-59) [lang] DateUtils.truncate method is buggy when dealing with DST switching hours

["Henri Yandell (JIRA)" <ji...@apache.org>]

    [ http://issues.apache.org/jira/browse/LANG-59?page=comments#action_12419010 ] 

Henri Yandell commented on LANG-59:
-----------------------------------

Most frustatingly, sometimes the test passes and sometimes it fails. Possibly based on time of day the test is run.

> [lang] DateUtils.truncate method is buggy when dealing with DST switching hours
> -------------------------------------------------------------------------------
>
>          Key: LANG-59
>          URL: http://issues.apache.org/jira/browse/LANG-59
>      Project: Commons Lang
>         Type: Bug

>     Versions: 2.1
>  Environment: Operating System: Windows XP
> Platform: Other
>     Reporter: Li Zhang
>      Fix For: 2.2

>
> Try to truncate 2004-10-31 01:00:00 MDT by hour and you'll actually get 2004-10-
> 31 01:00:00 MST, which is one hour after the input hour.
>     // truncate 2004-10-31 01:00:00 MDT
>     Date oct31_01MDT = new Date(1099206000000L);    
>     Date result = DateUtils.truncate(oct31_01MDT, Calendar.HOUR_OF_DAY);
>     assertEquals(oct31_01MDT, result);

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