RESET MASTER;
CREATE OR REPLACE SEQUENCE s1;
DROP SEQUENCE s1;
FLUSH LOGS;
FOUND 2 /GTID [0-9]+-[0-9]+-[0-9]+/ in mysqlbinlog.sql
The same as above number of samples must be found:
FOUND 2 /GTID [0-9]+-[0-9]+-[0-9]+ ddl/ in mysqlbinlog.sql
End of the tests