> mongo.is.connected(mongo)
[1] TRUE

> mongo.get.databases(mongo)
[1] "FF"
>

> mongo.get.database.collections(mongo , db = "FF")
character(0)
>

> use FF
switched to db FF

> show collections
kelp_classifications
kelp_groups
kelp_subjects
kelp_users

mongo <- mongo.create()
mongo.is.connected(mongo)
# [1] TRUE
db <- "test"
mongo.get.database.collections(mongo, db = db)
[1] "test.test"