[Rd] NOTE when detecting mismatch in output, and codes for NOTEs, WARNINGs and ERRORs

Kirill Müller kirill.mueller at ivt.baug.ethz.ch
Wed Mar 26 09:58:29 CET 2014

Dear list

It is possible to store expected output for tests and examples. From the 
manual: "If tests has a subdirectory Examples containing a file 
pkg-Ex.Rout.save, this is compared to the output file for running the 
examples when the latter are checked." And, earlier (written in the 
context of test output, but apparently applies here as well): "..., 
these two are compared, with differences being reported but not causing 
an error."

I think a NOTE would be appropriate here, in order to be able to detect 
this by only looking at the summary. Is there a reason for not flagging 
differences here?

The following is slightly related: Some compilers and static code 
analysis tools assign a numeric code to each type of error or warning 
they check for, and print it. Would that be possible to do for the 
anomalies detected by R CMD check? The most significant digit could 
denote the "severity" of the NOTE, WARNING or ERROR. This would further 
simplify (semi-)automated analysis of the output of R CMD check, e.g. in 
the context of automated tests.

Best regards


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