One way of developing fast, effective, and high-quality software products is to reuse previously developed software components and products. In the case of a product family, the software product line (SPL) approach can make reuse more effective. The goal of SPLs is faster development of low-cost and high-quality software products. This paper proposes an incremental model-based approach to test products in SPLs. The proposed approach utilizes event-based behavioral models of the SPL features. It reuses existing event-based feature models and event-based product models along with their test cases to generate test cases for each new product developed by adding a new feature to an existing product. Newly introduced featured event sequence graphs (FESGs) are used for behavioral feature and product modeling; thus, generated test cases are event sequences. The paper presents evaluations with three software product lines to validate the approach and analyze its characteristics by comparing it to the state-of-the-art ESGbased testing approach. Results show that the proposed incremental testing approach highly reuses the existing test sets as intended. Also, it is superior to the state-of-the-art approach in terms of fault detection effectiveness and test generation effort but inferior in terms of test set size and test execution effort. INDEX TERMS incremental testing, model-based testing, software product lineThis article has been accepted for publication in IEEE Access.
Yazılım ürün hattı (YÜH) karmaşık, büyük ölçekli ve ürün yapılandırması bakımından zengin yazılım sistemleri geliştirmek için gelelecek vadeden bir yaklaşımdır. Yazılım ürün hattındaki sayısı çok fazla olabilen ürün yapılandırmalarına ait modellerin otomatik elde edilmesi zaman ve maliyet kısıtları açısından oldukça önemlidir. Bu çalışmada, ürün modellerini daha üretken ve etkili şekilde elde edebilmek için, tam ürün modelinden, özellik eksiltme yoluyla farklı ürün yapılandırmalarına ait modelleri otomatik olarak elde etmeyi sağlayan bir yaklaşım önerdik. Önerilen yaklaşımı İçecek Otomatı YÜH, Banka Hesabı YÜH ve Öğrenci Yoklama Sistemi YÜH isimli üç farklı vaka çalışması üzerinde denedik. Özellik-bağımlılık ağacı ve dinamik kenar eşleme algoritması bu çalışmada önerilen özgün kavramlardır.
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