[racket-dev] Test results are slightly incomprehensible...

On Wed, Sep 28, 2011 at 6:04 PM, Matthew Flatt <mflatt at cs.utah.edu> wrote:
> At Wed, 28 Sep 2011 21:02:14 +0100, Paulo J. Matos wrote:
>> Errors were:
>> (Section (got expected (call)))
>> ((date) ((638931660) Error (find-seconds 0 1 2 1 4 1990)))
>
> After looking into this, I conclude that the test is faulty, but that
> it also highlights a bug/limitation on Windows:
>
>  * The test assumes that the current timezone had daylight saving time
>   starting at what would have been 2:00am on April 4, 1990.
>
>   The test will fail on your machine if your timezone is set to a
>   place with no or different DST rules (i.e., different than the
>   standard US timezones).

Is there a way to check and see if the timezone is one of the US ones?

>  * Windows gets it wrong. It thinks that US Mountain Time started
>   daylight saving sometime in March ---- which is the right idea for
>   the current DST calendar, but wrong for 1990.
>
>   My guess is that timezone configuration in Windows cannot support
>   different DST start-date rules for different years.

... and not under windows, I guess? :)

Robby

> I'll adjust the test, though I don't yet have a better idea than just
> removing it.
>
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