add test case

tests/system-test/0-others/show.py

@@ -89,6 +89,14 @@ class TDTestCase:
         for key,value in sql_dict.items():
             create_sql += f' {key} {value}'
         return create_sql
+
+    def show_create_sysdb_sql(self):
+        sysdb_list = {'information_schema', 'performance_schema'}
+        for db in sysdb_list:
+          tdSql.query(f'show create database {db}')
+          tdSql.checkEqual(f'{db}',tdSql.queryResult[0][0])
+          tdSql.checkEqual(f'CREATE DATABASE `{db}`',tdSql.queryResult[0][1])
+
     def show_create_sql(self):
         create_db_sql = self.set_create_database_sql(self.db_param)
         print(create_db_sql)
@@ -193,6 +201,7 @@ class TDTestCase:
         self.ins_check()
         self.perf_check()
         self.show_create_sql()
+        self.show_create_sysdb_sql()
 
     def stop(self):
         tdSql.close()