[R-pkg-devel] Usage of internet resources in examples

[Ben Bolker]

On 10/20/20 5:10 PM, Gábor Csárdi wrote:
> On Tue, Oct 20, 2020 at 10:07 PM Ben Bolker <bbolker using gmail.com> wrote:
>>
>>
>>
>> On 10/20/20 4:51 PM, Gábor Csárdi wrote:
>>> On Tue, Oct 20, 2020 at 9:45 PM Ben Bolker <bbolker using gmail.com> wrote:
>>> [...]
>>>>      if (testthat::skip_on_cran())
>>>>
>>>> all seem like reasonable solutions.
>>>
>>> I don't think you can use `testthat::skip_on_cran()` for this, it does
>>> not return a logical flag:
>>>
>>> ❯ isTRUE(testthat::skip_on_cran())
>>> Error: Reason: On CRAN
>>>
>>> It only works in testthat tests.
>>>
>>> Gabor
>>>
>>> [...]
>>>
>>
>>     oh OK, sorry.  The guts of the function are (in testthat:::on_cran(),
>> which can't be used because it's not exported)
>>
>> !identical(Sys.getenv("NOT_CRAN"), "true")
> 
> It is not really worth exporting this, because it just checks for an
> environment variable, that's all it does. So all users would need to
> set this environment variable to be able to run the examples. Which
> does not seem like a great solution.
> 
> G.
> 

     OK, fair enough.

   Ben B.