[LANG-59] [lang] DateUtils.truncate method is buggy when dealing with DST switching hours

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.1
• Fix Version/s: 2.2

Environment

Operating System: Windows XP
Platform: Other

• Bugzilla Id: 37243
• Assignee: Unassigned
• Reporter: Li Zhang
• Created: 26/Oct/05 07:22
• Updated: 27/Oct/10 04:22
• Resolved: 21/Jul/06 05:15

Description

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);

Issue Links

• is related to: LANG-654 DateUtils.truncate method is buggy when dealing with DST switching hours