Testing
Use the test environment to test class components in the Class Builder and business object components in the Business Object Builder. The system dynamically generates a test program that simulates the execution of various ABAP statements.

You can only test the public components of objects.
Use the test environment to
● Display access to the attributes of a class
● Simulate changes to the attributes of a class
● Simulate method calls
● Test the event handling using a standard handler
● Test an interface view of an object
See also:
Testing an Interface View of an Object