Re: [Rd] if(--as-cran)?

From: Duncan Murdoch <murdoch.duncan_at_gmail.com>
Date: Tue, 04 Sep 2012 17:15:27 -0400

On 04/09/2012 4:53 PM, Warnes, Gregory wrote:
> On 9/4/12 3:58 PM, "Duncan Murdoch" <murdoch.duncan@gmail.com> wrote:
>
> >On 04/09/2012 3:44 PM, Terry Therneau wrote:
> >>ly in
> >> On 09/04/2012 01:57 PM, Duncan Murdoch wrote:
> >> > On 04/09/2012 2:36 PM, Warnes, Gregory wrote:
> >> >> On 9/4/12 8:38 AM, "Duncan Murdoch" <murdoch.duncan_at_gmail.com> wrote:
> >> >>
> >> >>
> >> >> >On 04/09/2012 8:20 AM, Terry Therneau wrote:
> >> >> >>
> >> >> >> On 09/04/2012 05:00 AM, M
> >><mailto:r-devel-request_at_r-project.org>artin wrote:
> >> >> >> > The issue is not just about "CRAN" vs "off CRAN".
> >> >> >> > It is good to think about a more general scheme of
> >> >> >> > "light testing" vs "normal testing" vs "extensive testing",
> >> >> >> > e.g., for the situation where the package implements
> >> >> >> > (simulation/bootstrap/ ..) based inference, and the developer
> >> >> >> > (but not only) should be able to run the extensive tests.
> >> >> >> >
> >> >> >> > Martin
> >> >> >>
> >> >> >> I agree with Martin. A mechanism to specify testing level would
> >>be the
> >> >> >> best. Then CRAN can choose to set that variable to "3" say, with
> >>level
> >> >> >> 1 for extensive and 2 for usual.
> >>>> >>
> >>
> >>[snip]
>
> >The testingLevel() function is supposed to be a way to know that a
> >certain level of testing is being done, to allow such tailoring.
> >However, I don't think it's practical. I think you can ask whether a
> >specific test is being run (my "D" %in% tests() example), but you can't
> >reasonably convert the set of tests chosen by a tester into a single
> >number.
> >
> >What I think you and Greg are talking about is something different. You
> >are asking that we set up more suites of tests, corresponding to
> >numerical levels. Currently we have two suites: the default, and the
> >--as-cran suite. But we also have completely customized suites, set by
> >users who want to check specific things. They can do that the way you
> >do (by calling the tests explicitly), or by setting environment
> >variables (as described in the Tools chapter of the R Internals manual).
>
> No! We're not asking for the r-core to create more test suites, or even
> to do anything different based on the test intensity level.
>
> We're just asking for a standard way to control the intensity of the tests
> *we* write to prevent us from duplicating this functionality in our own
> packages, probably in incompatible ways.

But you do have ways to control the tests you write. The standard way is to set an environment variable, private to your needs. If you see the variable, do what it says. If you don't see it, do the default.

What I think is being asked for is a way to detect the suite of tests that CRAN runs (i.e. the --as-cran test), or perhaps to detect that it's actually CRAN doing the testing. I've given a way to detect --as-cran, and despite what Martin says, it doesn't conflict with his practice. I don't think it's a good idea to detect who is doing the testing, because I'd like to be able to duplicate the CRAN results for your package.

Duncan Murdoch



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