Master Degree / Yüksek Lisans Tezleri
Permanent URI for this collectionhttps://hdl.handle.net/11147/3008
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Master Thesis Mutation Analysis of Specification-Based Contracts in Software Testing [master Thesis](01. Izmir Institute of Technology, 2021) Khalilov, Abbas; Tuğlular, Tuğkan; Belli, FevziSoftware used in fields such as medicine, finance, aviation and aerospace, nuclear power etc. is required to be reliable. Any software failures in these fields may have catastrophic consequences such as human and financial losses, which may cause a great damage to the economy and to social well-being. Hence, before launching, software should be rigorously tested. Testing can uncover the conditions, which software cannot handle. Those conditions might be overlooked during development. So, software testing points to the faults in the software under development to be patched. The important element of software testing is the use of the adequate test cases. If the outcome of the test case is positive, that means testing did not reveal any fault, then this test case might be considered as inefficient and useless for the tested version of software. Therefore, it is important to check test cases on adequacy, which can be achieved by mutation analysis. This thesis focuses on checking the adequacy of the test cases for Decision-Table-augmented Event Sequence Graphs (ESG-DTs) representation of a system under test by using mutation analysis. Test cases are represented in the Complete Event Sequence (CES) and Faulty CES (FCES) forms. This thesis presents a new set of mutation operators for mutation of contracts represented in Multi-Terminal Binary Decision Diagram (MTBDD). This thesis introduces a new approach for mutation of the ESG-DT model by using the proposed MTBDD mutation operators. The proposed approach is evaluated on three cases. The results for all cases show the drawback of specific FCES test sequences and the relationship between the mutant detection by CES/FCES sequences and proposed mutation operators.Master Thesis A Model-Based Test Generation Approach for Agile Software Product Lines(Izmir Institute of Technology, 2020) Öztürk, Dilek; Tuğlular, TuğkanAchieving fast development of good-quality software products is as important as achieving pure functionality. Qualified software development provides client satisfaction, reduces post-deployment costs and certificates the products. In addition to increasing quality, clients expect to tailor the products according to their needs and therefore, product configurability becomes more and more critical. Hence, the software manufacturing is required to adapt this configurable development process correspondingly. Software product line is a paradigm that purposes faster development of qualified software products that belongs to a particular domain. This thesis concentrates on quality assurance in software product lines and provides novel model-based approaches which are full test sequence composition and incremental test sequence composition approaches that aim to reuse existent test artefacts. Full test sequence composition approach reuses the existing test models and the test sequences are composed from scratch each time a product variant's test sequences are generated. Incremental test sequence composition approach reuses both of the test models and the existing test sequences of product variants. Whenever a product variant's test sequences are generated, existing test sequences and features which are incrementing the existing product are composed. The proposed approaches and the classical test generation of ESGs are compared, the results show that the incremental test sequence composition is the best in terms of both test set size and test generation time, the full test sequence composition is better than the single model ESG test generation in terms of test suite size but not in terms of test generation time.