Schema for DDTUnit test data cluster contains multiple groups of tests group containing multiple test definitions Definition of object element used for mapping to objects of test framework test contains set of objects and/or set of asserts Definition of set of object elements used for mapping to Java Object instance Definition of assert element used for Java objects containing all information about asserts to process Definition of object element used for mapping to objects of test framework Definition of assert/exception element used for mapping to assert objects of test framework Definition of exception element used for mapping to assert objects on expected exceptions of test framework