An ongoing series of blog entries on ABAP Unit testing:

Part 1 shows in which way ABAP Unit facilitates testing in ABAP.
Part 2 shows the benefits of ABAP Unit testing in complex programs.
Part 3 explains the principles on which unit testing are based.
Part 4 presents basic features of the ABAP Unit result display.
Part 5 considers some prejudices which might keep developers from writing ABAP Unit tests.

Blogger: Thomas Weiss