Parsed test spec with 2 sessions

starting permutation: s1_begin s1_plan s1_open s1_fetch64 s2_insert s1_rest s1_check s1_commit
step s1_begin: BEGIN ISOLATION LEVEL REPEATABLE READ;
step s1_plan: EXPLAIN (COSTS OFF) SELECT id FROM bm_cont WHERE d @@ 'hit'
					ORDER BY lion_bm25_score(d, 'hit', 'bm_cont_d') DESC;
QUERY PLAN                         
-----------------------------------
Custom Scan (LionBm25) on bm_cont  
  Filter: (d @@ '''hit'''::tsquery)
  Index: bm_cont_d                 
(3 rows)

step s1_open: DECLARE c NO SCROLL CURSOR FOR SELECT id FROM bm_cont WHERE d @@ 'hit'
					ORDER BY lion_bm25_score(d, 'hit', 'bm_cont_d') DESC;
step s1_fetch64: DO $$ DECLARE c refcursor := 'c'; r record;
					BEGIN FOR i IN 1..64 LOOP FETCH c INTO r;
					  INSERT INTO bm_cont_got (id) VALUES (r.id); END LOOP; END $$;
step s2_insert: INSERT INTO bm_cont VALUES (-1, to_tsvector('simple', repeat('hit ', 300)));
step s1_rest: DO $$ DECLARE c refcursor := 'c'; r record;
					BEGIN LOOP FETCH c INTO r; EXIT WHEN NOT FOUND;
					  INSERT INTO bm_cont_got (id) VALUES (r.id); END LOOP; END $$;
step s1_check: SELECT count(*) AS fetched, count(DISTINCT id) AS distinct_rows,
						 bool_and(id = 101 - n) AS best_first
					FROM bm_cont_got;
fetched|distinct_rows|best_first
-------+-------------+----------
    100|          100|t         
(1 row)

step s1_commit: COMMIT;

starting permutation: s1_begin s1_plan s1_open s1_fetch64 s2_insert_below s1_rest s1_check s1_commit
step s1_begin: BEGIN ISOLATION LEVEL REPEATABLE READ;
step s1_plan: EXPLAIN (COSTS OFF) SELECT id FROM bm_cont WHERE d @@ 'hit'
					ORDER BY lion_bm25_score(d, 'hit', 'bm_cont_d') DESC;
QUERY PLAN                         
-----------------------------------
Custom Scan (LionBm25) on bm_cont  
  Filter: (d @@ '''hit'''::tsquery)
  Index: bm_cont_d                 
(3 rows)

step s1_open: DECLARE c NO SCROLL CURSOR FOR SELECT id FROM bm_cont WHERE d @@ 'hit'
					ORDER BY lion_bm25_score(d, 'hit', 'bm_cont_d') DESC;
step s1_fetch64: DO $$ DECLARE c refcursor := 'c'; r record;
					BEGIN FOR i IN 1..64 LOOP FETCH c INTO r;
					  INSERT INTO bm_cont_got (id) VALUES (r.id); END LOOP; END $$;
step s2_insert_below: INSERT INTO bm_cont VALUES (-2, to_tsvector('simple', repeat('hit ', 20) || 'pad pad pad pad pad'));
step s1_rest: DO $$ DECLARE c refcursor := 'c'; r record;
					BEGIN LOOP FETCH c INTO r; EXIT WHEN NOT FOUND;
					  INSERT INTO bm_cont_got (id) VALUES (r.id); END LOOP; END $$;
step s1_check: SELECT count(*) AS fetched, count(DISTINCT id) AS distinct_rows,
						 bool_and(id = 101 - n) AS best_first
					FROM bm_cont_got;
fetched|distinct_rows|best_first
-------+-------------+----------
    100|          100|t         
(1 row)

step s1_commit: COMMIT;

starting permutation: s1_begin s1_open_scores s2_insert_many s1_scores s1_check_scores s1_commit
step s1_begin: BEGIN ISOLATION LEVEL REPEATABLE READ;
step s1_open_scores: DECLARE c NO SCROLL CURSOR FOR
					SELECT id, lion_bm25_score(d, 'hit | pad', 'bm_cont_d') AS s
					  FROM bm_cont WHERE d @@ 'hit | pad'
					 ORDER BY lion_bm25_score(d, 'hit | pad', 'bm_cont_d') DESC;
step s2_insert_many: INSERT INTO bm_cont SELECT 5000 + g, to_tsvector('simple', 'other')
					FROM generate_series(1, 3000) g;
step s1_scores: DO $$ DECLARE c refcursor := 'c'; r record;
					BEGIN LOOP FETCH c INTO r; EXIT WHEN NOT FOUND;
					  INSERT INTO bm_cont_got (id, s) VALUES (r.id, r.s); END LOOP; END $$;
step s1_check_scores: SELECT count(*) AS fetched,
						 count(*) FILTER (WHERE s > prev) AS out_of_order
					FROM (SELECT s, lag(s) OVER (ORDER BY n) AS prev FROM bm_cont_got) x;
fetched|out_of_order
-------+------------
    100|           0
(1 row)

step s1_commit: COMMIT;