In this directory, various tests on R are made automatically. This is the recommended way to check if R has been built successfully on your architecture. make test-All does both of make test-Examples and make test-Specific the first of which runs all the examples from the help files (*.Rd) of all core packages (base, eda, ..., ts) -- which can take quite long (5-15 minutes, depending on your environment). The "fast" part of the tests is `test-Specific' which runs the *.R files in this (./tests) directory (tolerantly) compares the result *.Rout file with the prespecified *.Rout.safe. Martin Maechler for the R Core Team.