gradethis
Pairing with the learnr R package, gradethis provides multiple methods to grade learnr exercises. To learn more about learnr tutorials, please visit https://rstudio.github.io/learnr/.
Installation
gradethis is still in development and not on CRAN yet.
The development version of gradethis can be installed from GitHub with:
remotes::install_github("rstudio-education/gradethis")Grading Demo 
To view the latest grading demo of the different checking methods:
library(gradethis)
gradethis::gradethis_demo()You can also view a deployed version of this demo here.