R: Examples for 'checkmate::assert'

### ** Examples

x = 1:10
assert(checkNull(x), checkInteger(x, any.missing = FALSE))
collection <- makeAssertCollection()
assert(checkChoice(x, c("a", "b")), checkDataFrame(x), add = collection)
collection$getMessages()

[1] "Variable 'x': One of the following must apply:\n * checkChoice(x): Must be element of set {'a','b'}, but is not atomic\n * scalar\n * checkDataFrame(x): Must be of type 'data.frame', not 'integer'."

Examples for 'checkmate::assert'

Combine multiple checks into one assertion