An application framework provides a reusable
design and implementation for a family of software systems.
Frameworks are introduced to reduce the cost of a product line
(i.e., family of products that share the common features). Software
testing is a time consuming and costly ongoing activity during the
application software development process. Generating reusable test
cases for the framework applications at the framework
development stage, and providing and using the test cases to test
part of the framework application whenever the framework is used
reduces the application development time and cost considerably.
Framework Interface Classes (FICs) are classes introduced by
the framework hooks to be implemented at the application
development stage. They can have reusable test cases generated at
the framework development stage and provided with the
framework to test the implementations of the FICs at the
application development stage. In this paper, we conduct a case
study using thirteen applications developed using three
frameworks; one domain oriented and two application oriented.
The results show that, in general, the percentage of the number of
FICs in the applications developed using domain frameworks is, on
average, greater than the percentage of the number of FICs in the
applications developed using application frameworks.
Consequently, the reduction of the application unit testing time
using the reusable test cases generated for domain frameworks is,
in general, greater than the reduction of the application unit testing
time using the reusable test cases generated for application
 K. Beck and R, Johnson. Patterns generated architectures, Proc. of
ECOOP 94, 1994, 139-149.
 G. Froehlich, H.J. Hoover, L. Liu, and P.G. Sorenson. Hooking into
Object-Oriented Application Frameworks, Proc. 19th Int'l Conf. on
Software Engineering, Boston, May 1997, 491-501.
 E. M. Fayad and D. C. Schmidt. Object-oriented application
frameworks, Communications of the ACM, October 1997, Vol. 40,
 K. Saleh, A. Boujarwah and J. Al-Dallal, "Anomaly detection in
concurrent Java programs using dynamic data flow analysis", Journal
of Information and Software Technology, Jan 2002, Vol 44, no 1, pp.
 R. Binder. Testing object-oriented systems, Addison Wesley, 1999.
 J. Al Dallal and P. Sorenson, Generating Class-Based Test Cases for
Interface Classes of Object-Oriented Black Box Frameworks,
submitted for publication in Transactions on Engineering, Computing
and Technology, 2006.
 G. Froehlich, Hooks: an aid to the reuse of object-oriented
frameworks, Ph.D. Thesis, University of Alberta, Department of
Computing Science, 2002.
 Java 1.3.1, http://java.sun.com/, July 2006.
 The SalesPoint framework v2.0 homepage, http://www-st.inf.tudresden.
de/SalesPoint/v3.0/, July 2006.
 LOCC (software information), http://csdl.ics.hawaii.edu/
Tools/LOCC/, July 2006.