Re: [HACKERS] possibility to specify template database for pg_regress

On 2/13/17 8:50 PM, Andres Freund wrote:
> On 2017-02-14 11:46:52 +0900, Michael Paquier wrote:
>>> I still fail to see why --use-existing as suggested in
>>> https://www.postgresql.org/message-id/20170208002900.vkldujzfkwbvqqq7@alap3.anarazel.de
>>> isn't sufficient.
>>
>> Some tests create objects without removing them, meaning that
>> continuous runs would fail with only --use-existing. This patch brings
>> value in such cases.
>
> You can trivially script the CREATE/DROP DB outside with
> --use-existing. Which seems a lot more flexible than adding more and
> more options to pg_regress.

AFAIK if you're doing make check (as opposed to installcheck) it's 
significantly more complicated than that since you'd have to create a 
temp cluster/install yourself.

As an extension author, I'd *love* to have the cluster management stuff 
in pg_regress broken out: it's the only reason I use pg_regress, and 
pg_regress's idea of what a test failure is just gets in my way. But 
breaking that out is far more invasive than allowing a template database.
-- 
Jim Nasby, Data Architect, Blue Treble Consulting, Austin TX
Experts in Analytics, Data Architecture and PostgreSQL
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