I think the OP was asking about test suites that test the software.
The R package structure includes a test/ directory which you can use
to put tests.
For example, in the onion package I check that I have got my
signs and multiplication table correctly implemented:
stopifnot(Hi*Hj == Hk)
stopifnot(Hj*Hi == -Hk)
stopifnot(Hj*Hk == Hi)
stopifnot(Hk*Hj == -Hi)
stopifnot(Hk*Hi == Hj)
stopifnot(Hi*Hk == -Hj)
[and a whole lot of others]
and the elliptic package includes a whole bunch of code
that verifies identities that appear in AMS-55. It also
includes numerical verification that the functions,
using randomish arguments, match the output of
mathematica or maple.
Philippe Grosjean wrote:
There is a mechanism for testing code in R packages (R CMD check), see
the Writing R extensions manual. If you need more flexibility for your
tests, you could look at RUnit on CRAN, or svUnit on R-Forge
(http://r-forge.r-project.org, on CRAN soon). For the later one, you
install it by:
install.packages("svUnit", repos="http://R-Forge.R-project.org";)
These is a vignette associated with svUnit:
vignette("svUnit")
Note that RUnit and svUnit are "test suite code" compatible, but they
use very different mechanisms internally.
Best,
Philippe Grosjean
..............................................<°}))><........
) ) ) ) )
( ( ( ( ( Prof. Philippe Grosjean
) ) ) ) )
( ( ( ( ( Numerical Ecology of Aquatic Systems
) ) ) ) ) Mons-Hainaut University, Belgium
( ( ( ( (
..............................................................
Nathan S. Watson-Haigh wrote:
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I was wondering if anyone could point me in the right direction for
reading up on writing tests in
R. I'm writing some functions for inclusion into a package and would
like to test them to ensure
they're doing what I expect them to do.
Are these approaches used for testing packages in CRAN?
Cheers,
Nathan
- --
- --------------------------------------------------------
Dr. Nathan S. Watson-Haigh
OCE Post Doctoral Fellow
CSIRO Livestock Industries
Queensland Bioscience Precinct
St Lucia, QLD 4067
Australia
Tel: +61 (0)7 3214 2922
Fax: +61 (0)7 3214 2900
Web: http://www.csiro.au/people/Nathan.Watson-Haigh.html
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