Improve error detections in TAP tests by spreading safe_psql - Mailing list pgsql-hackers

Hi all,

This is a follow-up of the discussion which happened here after Tom
has committed fb57f40:
https://www.postgresql.org/message-id/20190828012439.GA1965@paquier.xyz

I have reviewed the TAP tests, and we have much more spots where it
is better to use PostgresNode::safe_psql instead PostgresNode::psql so
as the test dies immediately if there is a failure on a query which
should never fail.

Attached are the spots I have found.  Any thoughts or opinions?
Thanks,
--
Michael