Parsed test spec with 3 sessions

starting permutation: s1-grant s1-connect s2-connect s2-connect-superuser s3-select
run_command_on_workers
---------------------------------------------------------------------
(localhost,57637,t,t)
(localhost,57638,t,t)
(2 rows)

step s1-grant:
 SELECT result FROM run_command_on_placements('my_table', 'GRANT SELECT ON TABLE %s TO my_user');

result
---------------------------------------------------------------------
GRANT
GRANT
GRANT
GRANT
(4 rows)

step s1-connect:
 SELECT make_external_connection_to_node('localhost', 57637, 'my_user', current_database());

make_external_connection_to_node
---------------------------------------------------------------------

(1 row)

step s2-connect:
 SELECT make_external_connection_to_node('localhost', 57637, 'my_user', current_database());

ERROR:  connection failed
step s2-connect-superuser:
 SELECT make_external_connection_to_node('localhost', 57637, 'postgres', current_database());

make_external_connection_to_node
---------------------------------------------------------------------

(1 row)

step s3-select:
 SET ROLE my_user;
 SELECT count(*) FROM my_table;

count
---------------------------------------------------------------------
    0
(1 row)

run_command_on_workers
---------------------------------------------------------------------
(localhost,57637,t,t)
(localhost,57638,t,t)
(2 rows)