Thread: pgsql: Add a regression test for contrib/pg_prewarm.

Add a regression test for contrib/pg_prewarm.

We had a little bit of coverage here thanks to e2f65f425,
but not enough; notably, autoprewarm wasn't exercised at all.

Dong Wook Lee, with help from Julien Rouhaud and myself

Discussion: https://postgr.es/m/20220629053812.mifmdrch5iuasg2s@home-desktop

Branch
------
master

Details
-------
https://git.postgresql.org/pg/commitdiff/2865b4060a434855f90fda41f1b8f4bca7c55b0e

Modified Files
--------------
contrib/pg_prewarm/.gitignore     |  4 +++
contrib/pg_prewarm/Makefile       |  2 ++
contrib/pg_prewarm/t/001_basic.pl | 58 +++++++++++++++++++++++++++++++++++++++
3 files changed, 64 insertions(+)