Test::assertions provides a convenient set of tools for constructing tests, such as unit tests or run-time assertion checks (like c's assert macro). unlike some of the test:: modules available on cpan, test::assertions is not limited to unit test scripts; for example it can be used to check if output is as expected within a benchmarking script. when it is used for unit tests, it generates output in the standard form for cpan unit testing (under test::harness).