assert that send_msgs is only called once
assert that send_msgs is only called once

pulilab/rapidpro,tsotetsi/textily-web,tsotetsi/textily-web,pulilab/rapidpro,tsotetsi/textily-web,pulilab/rapidpro,tsotetsi/textily-web,tsotetsi/textily-web,pulilab/rapidpro,pulilab/rapidpro