#
# wsrep_gtid_mode
#
# save the initial value
SET @wsrep_gtid_mode_global_saved = @@global.wsrep_gtid_mode;
# default
SELECT @@global.wsrep_gtid_mode;
@@global.wsrep_gtid_mode
0
SELECT @@session.wsrep_gtid_mode;
ERROR HY000: Variable 'wsrep_gtid_mode' is a GLOBAL variable

# scope and valid values
SET @@global.wsrep_gtid_mode=OFF;
SELECT @@global.wsrep_gtid_mode;
@@global.wsrep_gtid_mode
0
SET @@global.wsrep_gtid_mode=ON;
SELECT @@global.wsrep_gtid_mode;
@@global.wsrep_gtid_mode
1

# invalid values
SET @@global.wsrep_gtid_mode=NULL;
ERROR 42000: Variable 'wsrep_gtid_mode' can't be set to the value of 'NULL'
SET @@global.wsrep_gtid_mode='junk';
ERROR 42000: Variable 'wsrep_gtid_mode' can't be set to the value of 'junk'

# restore the initial value
SET @@global.wsrep_gtid_mode = @wsrep_gtid_mode_global_saved;
# End of test