expect_package: Expect that a given package is used
Description
Tests that the following packages is used.
Usage
expect_package(object, info = NULL, label = NULL)
Arguments
object
Package to check for.
info
Extra information to be included in the message (useful when writing tests in loops).
label
For full form, label of expected object used in error messages.
Useful to override default (deparsed expected expression) when doing
tests in a loop. For short cut form, object label. When NULL, computed from
deparsed object.