Risk of accidentally including dangerous code in dontrun

[hughjonesd]

You can't merge @examples and @doctest, so you need to convert @examples sections to @doctest. But then there's a risk it automatically includes code that you don't want in tests.

E.g. from dogfooding hughjonesd/huxtable:

#' @rdname report_latex_dependencies
#' @doctest
#' 
#' \dontrun{
#'   install_latex_dependencies() # oops this is now in the test
#' }

The best solution is probably "don't produce blank tests if there are no expectations".

[hughjonesd]

Fixed by indeed not including blank tests.