add test in test_tokenizers
add test in test_tokenizers

PHLF/rasa_nlu,beeva-fernandocerezal/rasa_nlu,RasaHQ/rasa_nlu,verloop/rasa_nlu,RasaHQ/rasa_nlu,PHLF/rasa_nlu,beeva-fernandocerezal/rasa_nlu,RasaHQ/rasa_nlu,verloop/rasa_nlu