Package tests: best practices
On Mon, 22 Aug 2005, hadley wickham wrote:
I'm writing some tests for a package and I have a few questions regarding best practices. I've read "tests subdirectory" paragraph in writing R extension, but I'm left wanting more. Firstly, can I assume that the document root will always be set to the test directory? (that what a couple of quick tests seemed to show)
The working directory will be the tests directory as used, and all the tests subdirectory in the sources is copied there. R does not have `document root', AFAIK.
Obviously, I want to test the code in my package - how do I load it? I assume I can't use library(XXX) because that will load the currently installed version - should I source in all ../R/*.r instead?
You assume wrong: you should use the version installed for checking by library(xxx): R_LIBS is explicitly set to point to it first. I've added some further comments to R-exts, but it seems that quite a few people have worked this out from the existing info and there are several examples in the R sources and recommended packages.
Brian D. Ripley, ripley at stats.ox.ac.uk Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/ University of Oxford, Tel: +44 1865 272861 (self) 1 South Parks Road, +44 1865 272866 (PA) Oxford OX1 3TG, UK Fax: +44 1865 272595