Abstract
Software testing is an important phase of software development to ensure the quality and reliability of the software. Due to some limitations of code based testing method, the researcher has been taken a new method to work upon UML model based testing. It is found that different UML model is having different coverage and capable of detecting different kinds of faults. Here we have taken combinational UML models to have better coverage and fault detection capability. Testing concurrent system is difficult task because due to concurrent interaction among the threads and the system results in test case explosion. In this paper we have presented an approach of generating test cases for concurrent systems using combinational UML models i.e. sequence diagram and activity diagram .Then a Sequence-Activity Graph (SAG) is constructed from these two diagrams. Then that graph is traversed to generate test cases which are able to minimize test case explosion.
Highlights
Software testing plays a vital role in System Development Life cycle
The Sequence Diagram is a type of interaction diagram that is used for dynamic modelling which focuses on identifying the behaviour within the system
In our approach we have taken a sequence diagram and an activity diagram. From these two diagrams we have constructed a graph named as Sequence-Activity graph (SAG) by using an algorithm named as sequence-activity graph
Summary
Software testing plays a vital role in System Development Life cycle. It is an investigation which is to be conducted to provide information about the quality of the product. It has the specific feature that the testing techniques can be applied throughout the development process depending on the requirement specification and design models. Another advantage of model based testing is that the generated test data is independent of any particular implementation of design. Due to concurrency a major problem arises known as explosion of test case because of the possibility for arbitrary interference of concurrent threads Each thread may have more than one activity which www.ijacsa.thesai.org (IJACSA) International Journal of Advanced Computer Science and Applications, Vol 3, No.5, 2011 may be dependent on each other; that may be inter thread dependency or intra thread dependency Due to these problems there issues like Communication deadlock and synchronization may arise.
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