http://bugs.winehq.org/show_bug.cgi?id=17920
--- Comment #8 from Vitaly Lipatov lav@etersoft.ru 2009-10-05 08:40:34 --- (In reply to comment #7)
The question is how have you developed an implementation in the first place? How do you know what should it do internally and which corner/error cases should you handle and how? The only answer to that questions could be done by test cases written specifically for cases you want to test, or not clear from MSDN, or to prove that your implementation is correct at all.
I agree with all your arguments. But I use 1C Accounting as a test. Only problem is it no test with sources. Is it better to have no implementation then apply some initial implementation?