assertFalse: Assert that the value evaluates to false
In bedatadriven/hamcrest: Hamcrest framework for writing unit tests in R

Description Usage Arguments Details See Also Examples

Asserts that the given value evaluates to FALSE. If the value evaluates does not evaluate to FALSE, then an error condition is raised.

1	assertFalse(value)

value

a vector with any length.

The identical function is used to check this condition, so this function will also raise an error condition if value evaluates to 0 or if the result of the evaluation has any attributes.

assertThat
assertTrue
isFalse

## Not run: 
assertFalse(is.character(1L))
## If you use an R version greater than 3.5.0, you can also use:
assertThat(is.numeric("a"), isFALSE)

## End(Not run)