if (Sys.getenv("_LOCAL_TESTS_")=="TRUE" && spaMM.getOption("example_maxtime")>40 && requireNamespace("IsoriX",quietly=TRUE)) { 
  cat(crayon::yellow("\ntest of IsoriX compatibility:"))
  testthat::test_local(path=paste0(spaMM::projpath(), "/../IsoriXplus/IsoriX/IsoriX/tests/testthat/")) # test_NA_handling notably...
} else if (Sys.getenv("_LOCAL_TESTS_")!="TRUE") message("IsoriX tests not run: check whether _LOCAL_TESTS_=TRUE in .Renviron") # usethis::edit_r_environ() ...
# older tests:
if (FALSE) {
  source(file=paste0(spaMM::projpath(), "/package/tests_private/test-IsoriX.R"))
  # itself sourcing files in /nestedFiles
}