Thanks,

I have fixed it (and re enabled) in rev. 922813
I have used the "trick" to compare for equality but also accept a difference of 
+1 or -1

It should be ok for this test.

Jacopo

On Mar 13, 2010, at 5:39 PM, Adrian Crum wrote:

> --- On Sat, 3/13/10, Jacopo Cappellato <[email protected]> 
> wrote:
>> On Mar 13, 2010, at 6:48 AM, Adrian Crum wrote:
>> 
>>> 
>>> Understanding the difference between wall clock time
>> and elapsed time is especially important in manufacturing.
>> They are completely different, and manufacturing depends on
>> both.
>>> 
>>> The problem with the test is it advances the wall
>> clock, then compares elapsed time. They are not the same -
>> the test is comparing apples to oranges.
>>> 
>> 4) the above two dates are used as starting dates for the
>> tasks and the ending dates are determined; the test asks
>> that the differences between the ending date and starting
>> date of first period and the ending date and starting date
>> of the same period is the same 
>> 
>> Is this error caused when the DST is happening inside one
>> of the time ranges computed in #4? This is what I
>> understand...
> 
> That is correct.
> 
> Wall Clock Time = WCT
> Elapsed Time = ET
> 
> 2010-03-01 20:30 WCT plus 8 days WCT = 2010-03-09 20:30 WCT = 192 hours ET
> 2010-03-12 20:30 WCT plus 8 days WCT = 2010-03-20 20:30 WCT = 191 hours ET
> 
> 2010-03-01 20:30 WCT plus 192 hours ET = 2010-03-09 20:30 WCT
> 2010-03-12 20:30 WCT plus 192 hours ET = 2010-03-20 19:30 WCT
> 
> -Adrian
> 
> 
> 
> 

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