-- the operations complete without crashing or hanging and that none of their
-- internal sanity tests fail.
--
-SELECT test_shm_mq(32768, (select string_agg(chr(32+(random()*96)::int), '') from generate_series(1,400)), 10000, 1);
+SELECT test_shm_mq(1024, '', 2000, 1);
test_shm_mq
-------------
(1 row)
-SELECT test_shm_mq_pipelined(16384, (select string_agg(chr(32+(random()*96)::int), '') from generate_series(1,270000)), 200, 3);
+SELECT test_shm_mq(1024, 'a', 2001, 1);
+ test_shm_mq
+-------------
+
+(1 row)
+
+SELECT test_shm_mq(32768, (select string_agg(chr(32+(random()*95)::int), '') from generate_series(1,(100+900*random())::int)), 10000, 1);
+ test_shm_mq
+-------------
+
+(1 row)
+
+SELECT test_shm_mq(100, (select string_agg(chr(32+(random()*95)::int), '') from generate_series(1,(100+200*random())::int)), 10000, 1);
+ test_shm_mq
+-------------
+
+(1 row)
+
+SELECT test_shm_mq_pipelined(16384, (select string_agg(chr(32+(random()*95)::int), '') from generate_series(1,270000)), 200, 3);
test_shm_mq_pipelined
-----------------------
-- the operations complete without crashing or hanging and that none of their
-- internal sanity tests fail.
--
-SELECT test_shm_mq(32768, (select string_agg(chr(32+(random()*96)::int), '') from generate_series(1,400)), 10000, 1);
-SELECT test_shm_mq_pipelined(16384, (select string_agg(chr(32+(random()*96)::int), '') from generate_series(1,270000)), 200, 3);
+SELECT test_shm_mq(1024, '', 2000, 1);
+SELECT test_shm_mq(1024, 'a', 2001, 1);
+SELECT test_shm_mq(32768, (select string_agg(chr(32+(random()*95)::int), '') from generate_series(1,(100+900*random())::int)), 10000, 1);
+SELECT test_shm_mq(100, (select string_agg(chr(32+(random()*95)::int), '') from generate_series(1,(100+200*random())::int)), 10000, 1);
+SELECT test_shm_mq_pipelined(16384, (select string_agg(chr(32+(random()*95)::int), '') from generate_series(1,270000)), 200, 3);