[fpc-devel] Definition of the time-fration in a TDateTime before 30/12/1899

[Florian Klaempfl]

Michael Van Canneyt wrote:
> 
> 
> On Mon, 22 May 2006, Graeme Geldenhuys wrote:
> 
>> On 5/22/06, Bram Kuijvenhoven <kuifwaremailinglists at xs4all.nl> wrote:
>>> I guess we will need plenty of unit tests to make sure all the functions 
>> work consistent, in particular also for dates close to and before
>> 29-12-1899 :)
>>>
>>> (Note: I sent some mail explaining the TryEncodeDateTime function
>>> some time 
>> ago (21-4-2006), on Graeme's request. I also mentioned an overflow
>> problem in that code + how to fix. Perhaps this fix can be integrated
>> into the code as well.)
>>>
>>
>> Hi Bram,
>>
>> Yeah, I had my share of uphill battles with old dates (Delphi and
>> FPC).  I works fine with recent dates, but don't venture to far off!!
>>
>> I already have a collection of unit tests for dates, which is
>> incorporated into our products unit tests.  We use fpcUnit
>> extensively.  I could always extend those tests a bit more, but as far
>> as I understand, FPC developers dont' use fpcUnit, but rather some
>> custom testing framework.
> 
> 1. fpcunit didn't exist at the time the FPC tests were implemented.
> 2. Using FPCunit creates a dependency on it. The tests can run mostly
>    with only the system unit...

Which dependencies? Maybe they can be reduced and a fpcunit can be added to tests?