mariadb/mysql-test/t/failed_auth_unixsocket.test

--source include/have_unix_socket.inc

#
# MDEV-3909 remote user enumeration
# unix_socket tests
#
update mysql.user set plugin='unix_socket';
flush privileges;

--replace_result $MASTER_MYSOCK MASTER_SOCKET $MASTER_MYPORT MASTER_PORT $USER USER
--error ER_PLUGIN_IS_NOT_LOADED
connect (fail,localhost,$USER);

--error ER_PLUGIN_IS_NOT_LOADED
change_user $USER;

eval install plugin unix_socket soname '$AUTH_SOCKET_SO';

--replace_result $MASTER_MYSOCK MASTER_SOCKET $MASTER_MYPORT MASTER_PORT $USER USER
--error ER_ACCESS_DENIED_ERROR
connect (fail,localhost,$USER);

--error ER_ACCESS_DENIED_ERROR
change_user $USER;

update mysql.user set plugin='';
flush privileges;
uninstall plugin unix_socket;