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

[Michael Van Canneyt]

On Mon, 22 May 2006, Florian Klaempfl wrote:

> 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?

fpcunit depends on not so much, but I want to avoid using the FCL in the
testsuite... Creating a copy seems rather silly too...

Michael.