#create a user with no privileges
create user 'test_user'@'localhost';
create user 'test_role1'@'';
#manualy create role
update mysql.user set is_role='Y' where user='test_role1';
insert into mysql.roles_mapping (HostFk, UserFk, RoleFk) values ('localhost',
                                                                 'test_user',
                                                                 'test_role1');
create user 'test_role2'@'';
#manualy create role
update mysql.user set is_role='Y' where user='test_role2';
insert into mysql.roles_mapping (HostFk, UserFk, RoleFk) values ('',
                                                                 'test_role1',
                                                                 'test_role2');
flush privileges;

--sorted_result
select user, host from mysql.user where user not like 'root';
--sorted_result
select * from mysql.roles_mapping where UserFk like 'test_user';
--sorted_result
select * from mysql.roles_mapping where UserFk like 'test_role1';
grant select on *.* to 'test_role2'@'';
--sorted_result
select * from mysql.user where user like 'test_role1';
--sorted_result
select * from mysql.user where user like 'test_role2';
flush privileges;

change_user 'test_user';

--error ER_TABLEACCESS_DENIED_ERROR
select * from mysql.roles_mapping;

--sorted_result
show grants;
set role test_role1;
--sorted_result
show grants;
select * from mysql.roles_mapping where HostFk='';

--sorted_result
show grants;
set role none;
--sorted_result
show grants;
--error ER_TABLEACCESS_DENIED_ERROR
select * from mysql.roles_mapping;

--sorted_result
show grants;
--error ER_INVALID_ROLE
set role test_role2;
--sorted_result
show grants;
--error ER_TABLEACCESS_DENIED_ERROR
select * from mysql.roles_mapping;

#Make sure that this still works after an ER_INVALID_ROLE error
--sorted_result
show grants;
set role test_role1;
--sorted_result
show grants;
--sorted_result
select * from mysql.roles_mapping where HostFk='';

--sorted_result
show grants;
set role none;
--sorted_result
show grants;
--error ER_TABLEACCESS_DENIED_ERROR
select * from mysql.roles_mapping;

change_user 'root';
delete from mysql.user where user='test_role1';
delete from mysql.user where user='test_role2';
delete from mysql.roles_mapping;
flush privileges;
drop user 'test_user'@'localhost';