devtools::check() running infinite while devtools::test() running fine

[pat-s]

When running devtools::test() on my package, everything works fine.

devtools::check() and R CMD check are running infinite on my tests. My tests are using two cores via foreach(). Is that causing trouble? If not, is there any way to debug this?

(Please use the dev branch for testing purposes.)

[xrobin]

I am running into exactly the same issue with one of my package right now.
I tried to isolate a minimal example and pushed it into xrobin/testParallel.
Basically, just opening and closing a cluster with a function such as the following is sufficient to trigger the infinite run:

startStopCluster <- function() {
	cl <- makeCluster(2)
	stopCluster(cl)
	return(1)
}

Commenting out test_check("testParallel") in tests/testthat.R in order to have the function tested outside of testthat is sufficient to have the tests finish quickly (indicating this is not a problem with R CMD check itself).

[gaborcsardi]

This is the infamous R_TESTS catch. See https://github.com/xrobin/testParallel/pull/1/files#diff-3cf6fd2c31bb0259d6cfae004cdf115cR3 for the fix.

[xrobin]

This fixed the issue right away. It also shows how poor my googling skills are - even with the solution I can't really understand what's going on.
I hope it solves the problem for pat-s too.
Thanks a lot!

[pat-s]

Wow, that solved the problem! How many hours did I spent on that...

Thanks so much!!!! @gaborcsardi

[michaelbarton]

Thank you, this solved this issue for me to. For anyone coming here from google. Add:

Sys.unsetenv("R_TESTS")

For testing parallel functions with testthat.