fix migration and add dummy role type for automatically generated test

Author: isoppp

db/migrations/000001_init_schema.down.sql

@@ -1,8 +1,6 @@
 DROP TABLE IF EXISTS posts;
 DROP TABLE IF EXISTS user_role;
-
-DROP TYPE user_role_type;
-
 DROP TABLE IF EXISTS roles;
 DROP TABLE IF EXISTS sessions;
 DROP TABLE IF EXISTS users;
+DROP TYPE IF EXISTS user_role_type;

db/migrations/000001_init_schema.up.sql

@@ -16,7 +16,7 @@ CREATE TABLE "sessions"
 );
 
 DROP TYPE IF EXISTS user_role_type;
-CREATE TYPE user_role_type AS ENUM('Admin', 'User');
+CREATE TYPE user_role_type AS ENUM('Admin', 'User', 'TEST_DUMMY1', 'TEST_DUMMY2');
 
 CREATE TABLE "roles"
 (