If you want to start using ABAP Unit Testing, the links below will help you. They were useful to me when I started experimenting it.
- Basic infos SAP Help on ABAP Unit
- Getting Started with ABAP Testing and Troubleshooting
- SAP Help 2
- ABAP254 New Dynamic Test Tools for ABAP Developers
(Transaction SAAB + BREAK-POINT ID <id> + ASSERT ID <id>)
- BW and Unit Testing => Make use of CATT to Unit Test BW transformations How To… Perform ABAP Unit Tests for Transformations in SAP NetWeaver BW
ABAP unit tests enable writing and running white box tests during the development of complex BW transformation rules and routines. This How-To document shows you the tools you need to develop BW transformations according to a test-driven paradigm. Step by step, we describe a prototype implementation of an ABAP unit test for a selected BW transformation.