Using a PDU & Scenario Based Methodology in Testing OO Programs Using a PDU and Scenario Based Methodology in Testing Object-Oriented Programs

This paper presents our black-box approach (Tsert Method ©®TM) in testing objectoriented programs based on the use of protocol data units to communicate with a test-harness, which are built by processing the methods of a given class. Testing object-oriented programs has always been difficult, especially in handling inheritance and polymorphism. The approach to be presented, allows the tester, to test classes in a bottom-up manner, thereby handling inheritance and polymorphism, as the subclasses and classes are processed. The use of Protocol Data Units (PDUs) eliminates the need to generate stubs for classes and constructors. Our black-box approach, by handling only publicly accessible constructs, retain the main benefits of object-oriented programs, which are data hiding and abstraction. Index Terms PDU, Tsert, Black-Box, Stub, Scenario, Inheritance, Polymorphism.