more tests for create_hash_partitions_internal()

Author: funbringer

expected/pathman_calamity.out

@@ -295,6 +295,8 @@ SHOW pg_pathman.enable;
 
 /* check function create_hash_partitions_internal() (called for the 2nd time) */
 CREATE TABLE calamity.hash_two_times(val serial);
+SELECT create_hash_partitions_internal('calamity.hash_two_times', 'val', 2);
+ERROR:  table "hash_two_times" is not partitioned
 SELECT create_hash_partitions('calamity.hash_two_times', 'val', 2);
  create_hash_partitions 
 ------------------------

sql/pathman_calamity.sql

@@ -111,6 +111,7 @@ SHOW pg_pathman.enable;
 
 /* check function create_hash_partitions_internal() (called for the 2nd time) */
 CREATE TABLE calamity.hash_two_times(val serial);
+SELECT create_hash_partitions_internal('calamity.hash_two_times', 'val', 2);
 SELECT create_hash_partitions('calamity.hash_two_times', 'val', 2);
 SELECT create_hash_partitions_internal('calamity.hash_two_times', 'val', 2);