ARKA UÇ YAZILIM PROJELERI İÇIN ÜRETKEN YAPAY ZEKA TABANLI, SÖZLEŞME ODAKLI OTOMATİK BIRIM TESTİ BAKIM YAKLAŞIMI

Yıl 2025, Cilt: 4 Sayı: 2, 74 - 97, 31.12.2025

Furkan Samet Akıncı , Tuğkan Tuğlular

Öz

Güncel arka uç sistemlerinde fonksiyon sözleşmeleri ve API yüzeyleri sık sık değişmekte, bu da birim
testlerinin hızla geçerliliğini yitirmesine neden olmaktadır. Mevcut araçların büyük bölümü ilk test
üretimine odaklanmakta, test bakımının önemli bir kısmı ise hâlâ manuel yürütülmektedir. Bu çalışma,
sözleşme değişikliklerini kaynak düzeyinde algılayan ve ilişkili Jest testlerini büyük dil modelleri
(LLM) ile yeniden üreten sözleşme-tabanlı bir bakım yaklaşımı sunmaktadır. Önerilen yöntem,
TypeScript tabanlı dört açık kaynak arka uç projesinde toplam 28 sözleşme değişimi üzerinde
değerlendirilmiştir. Deneyler, aracın başarısız koşulları otomatik olarak onarabilen, kısmi
iyileştirmeler sağlayabilen ve mevcut test altyapısıyla bütünleşebilen pratik bir “self-healing” mekanizması sunduğunu göstermektedir. Bulgular, yöntemin başarısının proje mimarisi ve test suite
kalitesiyle yakından ilişkili olduğunu da ortaya koymaktadır.

Anahtar Kelimeler

Birim testi , test bakımı , yapay zeka , sözleşme değişimi , typescript , yazılım evrimi

Etik Beyan

Bu çalışma ile hiçbir şekilde çıkar elde edilmemiştir.

A CONTRACT-DRIVEN AUTOMATED UNIT TEST MAINTENANCE APPROACH WITH GENERATIVE ARTIFICIAL INTELLIGENCE FOR BACKEND SOFTWARE PROJECTS

Öz

Modern backend systems frequently undergo changes in function contracts and API surfaces, which
can quickly render unit tests outdated, brittle, or unusable. Most existing tools—whether based on
classical test generation or large language models (LLMs)—focus on initial test creation, leaving the
ongoing maintenance of existing test suites largely manual and error-prone. This paper presents a
contract-driven, AI-assisted framework for unit test maintenance in TypeScript backend projects. The
framework detects function-level contract changes and adapts related Jest tests through small,
validated edits synthesized by an LLM, without creating new tests or performing broad refactorings.
We evaluate the approach on 28 contract-change instances across four open-source projects. The
results indicate that contract-aware, LLM-based test maintenance can act as a practical self-healing
mechanism when contract changes are visible in the test surface, while its effectiveness remains
strongly shaped by project architecture and test-suite design.

Anahtar Kelimeler

Unit testing , test maintenance , artificial intelligence , contract changes , TypeScript , software evolution

Etik Beyan

The authors declare that they have no conflict of interest regarding this study.

Kaynakça

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