The R Journal: article published in 2011, volume 3:1

testthat: Get Started with Testing
Hadley Wickham , The R Journal (2011) 3:1, pages 5-10.

Abstract Software testing is important, but many of us don’t do it because it is frustrating and boring. testthat is a new testing framework for R that is easy learn and use, and integrates with your existing workflow. This paper shows how, with illustrations from existing packages.

CRAN packages: testthat, RUnit, svUnit, stringr, lubridate
CRAN Task Views implied by cited CRAN packages: ReproducibleResearch, TimeSeries

@article{RJ-2011-002,
  author = {Hadley Wickham},
  title = {{testthat: Get Started with Testing}},
  year = {2011},
  journal = {{The R Journal}},
  doi = {10.32614/RJ-2011-002},
  url = {https://doi.org/10.32614/RJ-2011-002},
  pages = {5--10},
  volume = {3},
  number = {1}
}