Check as CRAN, but do not skip any tests

Question

Is there any easy way with devtools::check() to run the extended CRAN checks but also run testhat tests that are marked as skip_on_cran()?

Basically, I want to run the most comprehensive tests I can: all of the CRAN checks, plus all of my unit tests

Answer 1

The current version of testhat::skip_on_cran just check a system variable:

testthat::skip_on_cran
function () 
{
    if (identical(Sys.getenv("NOT_CRAN"), "true")) {
        return(invisible(TRUE))
    }
    skip("On CRAN")
}

On my site, the devtools::check does not set this environment variable even with cran = TRUE so all tests are run. That is, the question does not seem to make sense with the present version of testthat.