[R] package tests

[Ott Toomet]

Hi,

It is not quite clear for me what do tests mean in the case of a package. 
,,Writing R extensions'' says: 

... these two [files .Rout.save and .Rout] are compared, with differences
being reported but not causing an error.

and

... tests specified in that directory are run [by R CMD check].

I want to write a test for a self-made output routine, which saves data to a
file.  I think, in this case it is meaningful to create a data, save to the
file, and then compare the new file with the original one.  But two problems
arose -- first, R seems to assume that it is output to screen, which is to
be compared, and second, CMD check said OK even when the files were quite a
different.  Or is CMD check simply testing whether the test programs produce
an error?

with best wishes,

Ott Toomet

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