Test tool integrated in the ABAP runtime environment that is used for checking the functions of code sections in a program (unit tests). The individual tests are implemented as test methods of local test classes in ABAP programs. The tests in a test class all use the same fixture. Global test classes can only be used in local test classes. The attributes of a test can be specified in the definition of a local test class. Tests for several ABAP programs can be grouped together into test tasks.