[R] tests Rin Rout

[Duncan Murdoch]

On 30/03/2008 10:44 AM, Christophe Genolini wrote:
> Hi the list,
> 
> Some rumour (!) say that is it possible to prepare some tests for 
> checking our code using .Rin and .Rout. It seems to be a very good 
> practice, but I did not manage to find information on it.
> So does someone know how it works ? What are we suppose to write in Rin ?

See the paragraph in Writing R Extensions which explains this, near the 
end of the section on Package Subdirectories (section 1.1.3 in the 
version I'm looking at).

Rin would be fairly rarely needed:  it is supposed to write a script to 
perform the tests.  Normally you write your script directly, in a .R file.

> 
> More precisely :
>  - I have a package myPack.r in directories ~/myR/myPack/R/
>  - I create the directory ~/myR/myPack/tests
> 
> myPack.r is :
> 
> `f1` <- function(x){cat("\nXXX F1 = ",x,"XXX\n")}
> `f2` <- function(x){cat("\nXXX F2 = ",f1(x^2),"XXX\n")}
> 
> What am I suppose to do to test it? Create myPack.Rin, but what in it?

Create tests/myPack.R with those lines in it plus lines to actually run 
the code.  If the code generates errors, your test will fail.  If you 
want to see reports of changes to the output, also include 
tests/myPack.Rout.save with the known correct versions of the output.

Duncan Murdoch

> 
> Thanks for your help.
> 
> Christophe
> 
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