Re: RFC: adding pytest as a supported test framework

On 2024-06-12 We 11:28, Andres Freund wrote:
> Hi,
>
> On 2024-06-11 08:04:57 -0400, Andrew Dunstan wrote:
>> Some time ago I did some work on wrapping libpq using the perl FFI module.
>> It worked pretty well, and would mean we could probably avoid many uses of
>> IPC::Run, and would probably be substantially more efficient (no fork
>> required). It wouldn't avoid all uses of IPC::Run, though.
> FWIW, I'd *love* to see work on this continue. The reduction in test runtime
> on windows is substantial and would shorten the hack->CI->fail->hack loop a
> good bit shorter. And save money.


OK, I will put it high on my list. I just did some checking and it seems 
to be feasible on Windows. StrawberryPerl at least has FFI::Platypus out 
of the box, so we would not need to turn any great handsprings to make 
progress on this on a fairly wide variety of platforms.

What seems a good place to start would be a simple 
PostgreSQL::Test::Session object that would allow us to get rid of a 
whole heap of start/pump_until/kill cycles and deal with the backend in 
a much more straightforward and comprehensible way, not to mention the 
possibility of removing lots of $node->{safe_}psql calls.


cheers


andrew

--
Andrew Dunstan
EDB: https://www.enterprisedb.com