[R-pkg-devel] how to skip tests on CRAN but NOT on travis-ci?

[Gábor Csárdi]

On Sun, Jun 21, 2015 at 8:52 PM, Duncan Murdoch
<murdoch.duncan at gmail.com> wrote:
[...]
>
> But it's trivial to source files from the tests directory.

It is actually often not trivial at all. E.g. if you have a test with
setup/teardown, and the setup must be run before each test case, the
teardown after, and you want to run each test case in a clean
environment, this really does not play well with source-ing files.

It is definitely possible, and probably works for smaller packages
with simple tests, but imo it is not good practice.

> Or perhaps
> (I don't know, I don't use it) it's trivial to tell travis to run the
> standard R CMD check, followed by the suggested one.

Yes, it is trivial, but I think this is not good practice either. E.g.
testthat gives you a summary in the end, and then you would need to
look at multiple summaries. It is easy to forget about the multiple
summaries, and miss one.

I think it is way easier if you just invoke the testing once, and let
it select what to run based on where it is running, what services are
available, etc.

G.