Parsed test spec with 3 sessions

starting permutation: s0_begin s0_first_subxact s2_checkpoint s1_begin s1_dml s0_many_subxacts s0_commit s2_checkpoint s2_get_changes_suppress_output s2_get_changes_suppress_output s1_commit s2_get_changes
step s0_begin: BEGIN;
step s0_first_subxact: 
    DO LANGUAGE plpgsql $$
      BEGIN
        BEGIN
          INSERT INTO harvest VALUES (41);
	EXCEPTION WHEN OTHERS THEN RAISE;
	END;
      END $$;

step s2_checkpoint: CHECKPOINT;
step s1_begin: BEGIN;
step s1_dml: INSERT INTO harvest VALUES (43);
step s0_many_subxacts: select subxacts();
subxacts
--------
        
(1 row)

step s0_commit: COMMIT;
step s2_checkpoint: CHECKPOINT;
step s2_get_changes_suppress_output: SELECT null n FROM pg_logical_slot_get_changes('isolation_slot', NULL, NULL, 'include-xids', '0', 'skip-empty-xacts', '1') GROUP BY n;
n
-
 
(1 row)

step s2_get_changes_suppress_output: SELECT null n FROM pg_logical_slot_get_changes('isolation_slot', NULL, NULL, 'include-xids', '0', 'skip-empty-xacts', '1') GROUP BY n;
n
-
(0 rows)

step s1_commit: COMMIT;
step s2_get_changes: SELECT data FROM pg_logical_slot_get_changes('isolation_slot', NULL, NULL, 'include-xids', '0', 'skip-empty-xacts', '1');
data                                            
------------------------------------------------
BEGIN                                           
table public.harvest: INSERT: apples[integer]:43
COMMIT                                          
(3 rows)

?column?
--------
stop    
(1 row)