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 -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html Send "info", "help", or "[un]subscribe" (in the "body", not the subject !) To: r-help-request at stat.math.ethz.ch _._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._