Parsed test spec with 3 sessions

starting permutation: s0_begin s0_ddl s1_ddl s1_begin s1_toast_insert s2_ddl s1_commit s1_get_stream_changes
step s0_begin: BEGIN;
step s0_ddl: CREATE TABLE stream_test1(data text);
step s1_ddl: CREATE TABLE stream_test(data text);
step s1_begin: BEGIN;
step s1_toast_insert: INSERT INTO stream_test SELECT large_val();
step s2_ddl: CREATE TABLE stream_test2(data text);
step s1_commit: COMMIT;
step s1_get_stream_changes: SELECT data FROM pg_logical_slot_get_changes('isolation_slot', NULL,NULL, 'include-xids', '0', 'skip-empty-xacts', '1', 'stream-changes', '1');
data                                    
----------------------------------------
opening a streamed block for transaction
streaming change for transaction        
closing a streamed block for transaction
committing streamed transaction         
(4 rows)

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