More and more R packages access resources on the web, and play crucial roles in workflows. Examples from the rOpenSci suite of packages include rromeo, GSODR, qualtRics, rnassqs, and many, many others. Like for all other packages, appropriate unit testing can make them more robust. However, unit testing of these packages can bring special challenges: dependence of tests on a good internet connection, testing in the absence of authentication secrets, …