Обсуждение: pgsql: Add test coverage for "unchanged toast column" replication code

Add test coverage for "unchanged toast column" replication code path.

It seems pretty unacceptable to have no regression test coverage
for this aspect of the logical replication protocol, especially
given the bugs we've found in related code.

Discussion: https://postgr.es/m/16129-a0c0f48e71741e5f@postgresql.org

Branch
------
master

Details
-------
https://git.postgresql.org/pg/commitdiff/f67b173771a0525ff7f2010d2d57d63d7f546352

Modified Files
--------------
src/test/subscription/t/001_rep_changes.pl | 31 +++++++++++++++++++++++++++++-
1 file changed, 30 insertions(+), 1 deletion(-)