It there an easy way to skip the execution of some tests in a package if the package is tested by CRAN? The background is, I like to have a lot of tests and in sum they are time consuming (not good for CRAN).
I know there is testthat::skip_on_cran() but I do not want to use package testthat to avoid another dependency. I am looking for an el-cheapo way to mimic testthat::skip_on_cran.
Ideally, I would like to have a testfile in directory pkg/tests that calls the tests (testfiles) and distuingishes if we are on cran or not:
if (!on_cran) {
## these tests are run only locally/when not on CRAN
# run test 1 (e.g. source a file with a test)
# run test 2
}
# run test 3 - always