#
# wsrep_cluster_name
#
# save the initial value
SET @wsrep_cluster_name_global_saved = @@global.wsrep_cluster_name;
# default
SELECT @@global.wsrep_cluster_name;
@@global.wsrep_cluster_name
my_wsrep_cluster

# scope
SELECT @@session.wsrep_cluster_name;
ERROR HY000: Variable 'wsrep_cluster_name' is a GLOBAL variable
SET @@global.wsrep_cluster_name='my_galera_cluster';
SELECT @@global.wsrep_cluster_name;
@@global.wsrep_cluster_name
my_galera_cluster

# valid values
SET @@global.wsrep_cluster_name='my_quoted_galera_cluster';
SELECT @@global.wsrep_cluster_name;
@@global.wsrep_cluster_name
my_quoted_galera_cluster
SET @@global.wsrep_cluster_name=my_unquoted_cluster;
SELECT @@global.wsrep_cluster_name;
@@global.wsrep_cluster_name
my_unquoted_cluster
SET @@global.wsrep_cluster_name=OFF;
SELECT @@global.wsrep_cluster_name;
@@global.wsrep_cluster_name
OFF
SET @@global.wsrep_cluster_name=default;
SELECT @@global.wsrep_cluster_name;
@@global.wsrep_cluster_name
my_wsrep_cluster

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

# restore the initial value
SET @@global.wsrep_cluster_name = @wsrep_cluster_name_global_saved;
# End of test