Parsed test spec with 2 sessions

starting permutation: s1_sub1 s2_insert1 s1_sub2 s2_insert2 s1_unsub1 s2_update s1_resub1 s2_delete s1_unsub2
step s1_sub1: SELECT pgr.subscribe('csub_q1', 'SELECT * FROM csub');
subscribe                                                                    
-----------------------------------------------------------------------------
{"mode": "delta", "status": "subscribed", "tables": 1, "query_id": "csub_q1"}
(1 row)

step s2_insert1: INSERT INTO csub (val) VALUES ('row1');
step s1_sub2: SELECT pgr.subscribe('csub_q2', 'SELECT * FROM csub WHERE val IS NOT NULL');
subscribe                                                                    
-----------------------------------------------------------------------------
{"mode": "delta", "status": "subscribed", "tables": 1, "query_id": "csub_q2"}
(1 row)

step s2_insert2: INSERT INTO csub (val) VALUES ('row2');
step s1_unsub1: SELECT pgr.unsubscribe('csub_q1');
unsubscribe
-----------
t          
(1 row)

step s2_update: UPDATE csub SET val = 'modified' WHERE val = 'row1';
step s1_resub1: SELECT pgr.subscribe('csub_q1', 'SELECT * FROM csub');
subscribe                                                                    
-----------------------------------------------------------------------------
{"mode": "delta", "status": "subscribed", "tables": 1, "query_id": "csub_q1"}
(1 row)

step s2_delete: DELETE FROM csub WHERE val = 'row2';
step s1_unsub2: SELECT pgr.unsubscribe('csub_q2');
unsubscribe
-----------
t          
(1 row)


starting permutation: s2_insert1 s1_sub1 s2_insert2 s1_sub2 s2_update s1_unsub1 s2_delete s1_resub1 s1_unsub2
step s2_insert1: INSERT INTO csub (val) VALUES ('row1');
step s1_sub1: SELECT pgr.subscribe('csub_q1', 'SELECT * FROM csub');
subscribe                                                                    
-----------------------------------------------------------------------------
{"mode": "delta", "status": "subscribed", "tables": 1, "query_id": "csub_q1"}
(1 row)

step s2_insert2: INSERT INTO csub (val) VALUES ('row2');
step s1_sub2: SELECT pgr.subscribe('csub_q2', 'SELECT * FROM csub WHERE val IS NOT NULL');
subscribe                                                                    
-----------------------------------------------------------------------------
{"mode": "delta", "status": "subscribed", "tables": 1, "query_id": "csub_q2"}
(1 row)

step s2_update: UPDATE csub SET val = 'modified' WHERE val = 'row1';
step s1_unsub1: SELECT pgr.unsubscribe('csub_q1');
unsubscribe
-----------
t          
(1 row)

step s2_delete: DELETE FROM csub WHERE val = 'row2';
step s1_resub1: SELECT pgr.subscribe('csub_q1', 'SELECT * FROM csub');
subscribe                                                                    
-----------------------------------------------------------------------------
{"mode": "delta", "status": "subscribed", "tables": 1, "query_id": "csub_q1"}
(1 row)

step s1_unsub2: SELECT pgr.unsubscribe('csub_q2');
unsubscribe
-----------
t          
(1 row)


starting permutation: s1_sub1 s1_unsub1 s2_insert1 s1_resub1 s2_insert2 s1_sub2 s2_update s1_unsub2 s2_delete
step s1_sub1: SELECT pgr.subscribe('csub_q1', 'SELECT * FROM csub');
subscribe                                                                    
-----------------------------------------------------------------------------
{"mode": "delta", "status": "subscribed", "tables": 1, "query_id": "csub_q1"}
(1 row)

step s1_unsub1: SELECT pgr.unsubscribe('csub_q1');
unsubscribe
-----------
t          
(1 row)

step s2_insert1: INSERT INTO csub (val) VALUES ('row1');
step s1_resub1: SELECT pgr.subscribe('csub_q1', 'SELECT * FROM csub');
subscribe                                                                    
-----------------------------------------------------------------------------
{"mode": "delta", "status": "subscribed", "tables": 1, "query_id": "csub_q1"}
(1 row)

step s2_insert2: INSERT INTO csub (val) VALUES ('row2');
step s1_sub2: SELECT pgr.subscribe('csub_q2', 'SELECT * FROM csub WHERE val IS NOT NULL');
subscribe                                                                    
-----------------------------------------------------------------------------
{"mode": "delta", "status": "subscribed", "tables": 1, "query_id": "csub_q2"}
(1 row)

step s2_update: UPDATE csub SET val = 'modified' WHERE val = 'row1';
step s1_unsub2: SELECT pgr.unsubscribe('csub_q2');
unsubscribe
-----------
t          
(1 row)

step s2_delete: DELETE FROM csub WHERE val = 'row2';