Re: Test to dump and restore objects left behind by regression

On 2025-Feb-06, Michael Paquier wrote:

> On Wed, Feb 05, 2025 at 03:28:04PM +0900, Michael Paquier wrote:
> > Hmm.  I was reading through the patch and there is something that
> > clearly stands out IMO: the new compare_dumps().  It is in Utils.pm,
> > and it acts as a wrapper of `diff` with its formalized output format.
> > It is not really about dumps, but about file comparisons.  This should
> > be renamed compare_files(), with internals adjusted as such, and
> > reused in all the existing tests.  Good idea to use that in
> > 027_stream_regress.pl, actually.  I'll go extract that first, to
> > reduce the presence of `diff` in the whole set of TAP tests.
> 
> The result of this part is pretty neat, resulting in 0001 where it is
> possible to use the refactored routine as well in pg_combinebackup
> where there is a piece comparing dumps.  There are three more tests
> with diff commands and assumptions of their own, that I've left out.

Great, I've looked at doing something like this in the libpq_pipeline
test for better diff reporting -- what I have uses Test::Differences,
which is pretty neat and usable, but it's not part of the standard
installed perl modules, which is a large downside.  I can probably get
rid of my hack once you get 0001 in.

-- 
Álvaro Herrera        Breisgau, Deutschland  —  https://www.EnterpriseDB.com/
"Find a bug in a program, and fix it, and the program will work today.
Show the program how to find and fix a bug, and the program
will work forever" (Oliver Silfridge)