postgresql/contrib/test_decoding/expected/delayed_startup.out
Tom Lane 4a054069a3 Improve display of query results in isolation tests.
Previously, isolationtester displayed SQL query results using some
ad-hoc code that clearly hadn't had much effort expended on it.
Field values longer than 14 characters weren't separated from
the next field, and usually caused misalignment of the columns
too.  Also there was no visual separation of a query's result
from subsequent isolationtester output.  This made test result
files confusing and hard to read.

To improve matters, let's use libpq's PQprint() function.  Although
that's long since unused by psql, it's still plenty good enough
for the purpose here.

Like 741d7f104, back-patch to all supported branches, so that this
isn't a stumbling block for back-patching isolation test changes.

Discussion: https://postgr.es/m/582362.1623798221@sss.pgh.pa.us
2021-06-23 11:13:00 -04:00

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Parsed test spec with 2 sessions
starting permutation: s1b s1w s2init s1c s2start s1b s1w s1c s2start s1b s1w s2start s1c s2start
step s1b: BEGIN ISOLATION LEVEL SERIALIZABLE;
step s1w: INSERT INTO do_write DEFAULT VALUES;
step s2init: SELECT 'init' FROM pg_create_logical_replication_slot('isolation_slot', 'test_decoding'); <waiting ...>
step s1c: COMMIT;
step s2init: <... completed>
?column?
--------
init
(1 row)
step s2start: SELECT data FROM pg_logical_slot_get_changes('isolation_slot', NULL, NULL, 'include-xids', 'false');
data
----
(0 rows)
step s1b: BEGIN ISOLATION LEVEL SERIALIZABLE;
step s1w: INSERT INTO do_write DEFAULT VALUES;
step s1c: COMMIT;
step s2start: SELECT data FROM pg_logical_slot_get_changes('isolation_slot', NULL, NULL, 'include-xids', 'false');
data
--------------------------------------------
BEGIN
table public.do_write: INSERT: id[integer]:2
COMMIT
(3 rows)
step s1b: BEGIN ISOLATION LEVEL SERIALIZABLE;
step s1w: INSERT INTO do_write DEFAULT VALUES;
step s2start: SELECT data FROM pg_logical_slot_get_changes('isolation_slot', NULL, NULL, 'include-xids', 'false');
data
----
(0 rows)
step s1c: COMMIT;
step s2start: SELECT data FROM pg_logical_slot_get_changes('isolation_slot', NULL, NULL, 'include-xids', 'false');
data
--------------------------------------------
BEGIN
table public.do_write: INSERT: id[integer]:3
COMMIT
(3 rows)
?column?
--------
stop
(1 row)