Test::Routine is a very simple framework for writing your tests as
composable units of assertion. In other words: roles.

For a walkthrough of tests written with Test::Routine, see the
Test::Routine::Manual::Demo manpage.

Test::Routine is similar to the Test::Class manpage in some ways. These
similarities are largely superficial, but the idea of "tests bound together
in reusable units" is a useful one to understand when coming to
Test::Routine. If you are already familiar with Test::Class, it is the
differences rather than the similarities that will be more important to
understand. If you are not familiar with Test::Class, there is no need to
understand it prior to using Test::Routine.