create role r1;
grant select on *.* to r1 identified by 'foobar';
drop user r1;
grant select on *.* to r1 identified by '';
drop user r1;
grant select on mysql.user to r1 identified by password '00000000000000000000000000000000000000000';
drop user r1;
grant select on *.* to r1 identified via plugin;
ERROR HY000: Plugin 'plugin' is not loaded
grant select on mysql.user to r1 identified via plugin using 'param';
ERROR HY000: Plugin 'plugin' is not loaded
grant select on *.* to r1 require subject 'foobar';
ERROR 28000: Can't find any matching row in the user table
grant select on mysql.user to r1 require issuer 'foobar';
ERROR 28000: Can't find any matching row in the user table
grant select on *.* to r1 require cipher 'foobar';
ERROR 28000: Can't find any matching row in the user table
grant select on mysql.user to r1 require ssl;
ERROR 28000: Can't find any matching row in the user table
grant select on *.* to r1 require x509;
ERROR 28000: Can't find any matching row in the user table
grant select on mysql.user to r1 require none;
ERROR 28000: Can't find any matching row in the user table
grant select on *.* to r1 with max_queries_per_hour 10;
ERROR 28000: Can't find any matching row in the user table
grant select on mysql.user to r1 with max_updates_per_hour 10;
ERROR 28000: Can't find any matching row in the user table
grant select on *.* to r1 with max_connections_per_hour 10;
ERROR 28000: Can't find any matching row in the user table
grant select on mysql.user to r1 with max_user_connections 10;
ERROR 28000: Can't find any matching row in the user table
set password for r1 = '00000000000000000000000000000000000000000';
ERROR 28000: Can't find any matching row in the user table
drop role r1;