Title :
A relational symbolic execution algorithm for constraint-based testing of database programs
Author :
Marcozzi, Michael ; Vanhoof, Wim ; Hainaut, Jean-Luc
Author_Institution :
Fac. of Comput. Sci., Univ. of Namur, Namur, Belgium
Abstract :
In constraint-based program testing, symbolic execution is a technique which allows to generate test data exercising a given execution path, selected within the program to be tested. Applied to a set of paths covering a sufficient part of the code under test, this technique permits to generate automatically adequate test sets for units of code. As databases are ubiquitous in software, generalizing such a technique for efficient testing of programs manipulating databases is an interesting approach to enhance the reliability of software. In this work, we propose a relational symbolic execution algorithmto be used for testing of simple Java methods, reading and writing with transactional SQL in a relational database, subject to integrity constraints. This algorithm considers the Java method under test as a sequence of operations over a set of constrained relational variables, modeling both the database tables and the method variables. By integrating this relational model of the method and database with the classical symbolic execution process, the algorithm can generate a set of Alloy constraints for any finite path to test in the control-flow graph of the method. Solutions of these constraints are data which constitute a test case, including valid content for the database, which exercises the selected path in the method. A tool implementing the proposed algorithm is demonstrated over a number of examples.
Keywords :
Java; SQL; constraint handling; flow graphs; program testing; relational databases; software reliability; symbol manipulation; Alloy constraints; Java methods; automatic adequate test set generation; constrained relational variables; constraint-based database program testing; control-flow graph; database tables; execution path; integrity constraints; relational database; relational model; relational symbolic execution algorithm; software reliability; symbolic execution process; test data generation; transactional SQL; Conferences; Indexes; Java; Metals; Software; Testing;
Conference_Titel :
Source Code Analysis and Manipulation (SCAM), 2013 IEEE 13th International Working Conference on
Conference_Location :
Eindhoven
DOI :
10.1109/SCAM.2013.6648200