ABAP Runtime Environment (BC-ABA)

Special local or global (as of Release 7.0) class, in which tests for ABAP Unit testing are implemented, as test methods. A test class groups tests that belong together and which use the same test fixtures. Test classes are defined like normal ABAP classes, with the addition of the FOR TESTING option of the CLASS keyword. Test classes can be executed only by ABAP Unit and are by default not generated in production systems.