[Rcpp-devel] Starting R Interpreter from C++

[JJ Allaire]

There is also a way to write C++ unit test with the catch framework and
have them added to the R test suite:
https://rdrr.io/cran/testthat/man/use_catch.html

Note this was originally built with integration with testthat in mind but
you can call it from any R test suite (docs on doing this are on the linked
to page).

On Mon, Jun 12, 2017 at 3:47 PM, Wolf Vollprecht <w.vollprecht at gmail.com>
wrote:

> RInside seems to have done the trick! Awesome.
>
> I have no strong opinions on how to implement the tests. The only reason
> why I wanted the embedded R solution is because we use it that way with
> Python and Julia, and it gives us "raw C++" tests. In the future, we might
> also have a xtensor-test package, that we can easily use to write tests for
> all three languages (in C++) at the same time (through metaprogramming).
>
> But we will definitly also add tests in R (as we have done with Python and
> Julia, too).
> It would be awesome if you have a chance to add some to your variant.
> I am going to fix up the C++ tests that I've added to the "big" PR and
> make sure that at least those we have right now work fine to establish a
> baseline to work from.
>
> Cheers!
>
> Wolf
>
>
> 2017-06-12 4:11 GMT-07:00 Dirk Eddelbuettel <edd at debian.org>:
>
>>
>> On 12 June 2017 at 11:22, Romain Francois wrote:
>> | You might be looking for RInside.
>>
>> Exactly correct in the narrow sense of 'how to get R going from C++'.
>>
>> On 12 June 2017 at 01:11, Wolf Vollprecht wrote:
>> | I am trying to run C++ tests from C++ directly.
>> | It looks like I need to start the R interpreter for memory management
>> etc.
>>
>> The wider, normal sense of the question is, I suspect, how to add unit
>> tests
>> to an R package such as your xtensor-r.  Give me a day or two and I may
>> get a
>> chance to add this to my variant of your project.
>>
>> You generally do NOT want force an embedded R interpreter __as any Rcpp
>> project is already called from R__.  Use CRAN as a repository of (as of
>> today) 1045 example packages.  I don't think a single one embeds R for
>> testing.  The RUnit (older, used by Rcpp itself) and testthat frameworks
>> are
>> popular.
>>
>> Dirk
>>
>> --
>> http://dirk.eddelbuettel.com | @eddelbuettel | edd at debian.org
>>
>
>
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