-- predictability
SET synchronous_commit = on;
SELECT 'init' FROM pg_create_logical_replication_slot('regression_slot', 'test_decoding');
 ?column? 
----------
 init
(1 row)

-- succeeds, textual plugin, textual consumer
SELECT data FROM pg_logical_slot_get_changes('regression_slot', NULL, NULL, 'force-binary', '0', 'skip-empty-xacts', '1');
 data 
------
(0 rows)

-- fails, binary plugin, textual consumer
SELECT data FROM pg_logical_slot_get_changes('regression_slot', NULL, NULL, 'force-binary', '1', 'skip-empty-xacts', '1');
ERROR:  logical decoding output plugin "test_decoding" produces binary output, but function "pg_logical_slot_get_changes(name,pg_lsn,integer,text[])" expects textual data
-- succeeds, textual plugin, binary consumer
SELECT data FROM pg_logical_slot_get_binary_changes('regression_slot', NULL, NULL, 'force-binary', '0', 'skip-empty-xacts', '1');
 data 
------
(0 rows)

-- succeeds, binary plugin, binary consumer
SELECT data FROM pg_logical_slot_get_binary_changes('regression_slot', NULL, NULL, 'force-binary', '1', 'skip-empty-xacts', '1');
 data 
------
(0 rows)

SELECT 'init' FROM pg_drop_replication_slot('regression_slot');
 ?column? 
----------
 init
(1 row)