SANER 2026 (series) / Journal First Track /
Test Amplification for REST APIs Using "Out-of-the-box" Large Language Models
Thu 19 Mar 2026 14:45 - 15:00 at Megaron Beta - Session 5B - Techniques and Tools for Testing and Verification Chair(s): Sriteja Kummita
REST APIs (Representational State Transfer Application Programming Interfaces) are an indispensable building block in today’s cloud-native applications, so automated test suites are critically important. However, writing automated tests for such REST APIs is challenging because one needs strong and readable tests that exercise the boundary values of the protocol embedded in the REST API. In this paper, we report our experience with using “out of the box” large language models (ChatGPT and GitHub’s Copilot) to amplify REST API test suites. We compare the resulting tests based on coverage and understandability, and we derive a series of guidelines and lessons learned concerning the prompts that result in the strongest test suite.
Thu 19 MarDisplayed time zone: Athens change
Thu 19 Mar
Displayed time zone: Athens change
14:00 - 15:30 | Session 5B - Techniques and Tools for Testing and VerificationJournal First Track / Research Track / Tool Demo Track / Early Research Achievement (ERA) Track at Megaron Beta Chair(s): Sriteja Kummita Paderborn University | ||
14:00 15mTalk | STELLAR: A Search-Based Testing Framework for Large Language Model Applications Research Track Lev Sorokin BMW Group, Technical University of Munich, Ivan Vasilev BMW Group, Technische Universität München, Germany, Ken Friedl BMW Group, Andrea Stocco Technical University of Munich, fortiss Pre-print File Attached | ||
14:15 15mTalk | Assessing Large Language Models in Verifying Concurrent Programs Research Track Ridhi Jain Technology Innovation Institute (TII), Abu Dhabi, UAE, Rahul Purandare University of Nebraska-Lincoln | ||
14:30 15mTalk | Understanding the Effectiveness of Mutators in Mutation-based Protocol Fuzzing Research Track Xiyuan Zhang East China Normal University, Jiayi Jiang East China Normal University, Yiutak Choi East China Normal University, Ting Su East China Normal University, Haiying Sun East China Normal University, Chengcheng Wan East China Normal University, Geguang Pu East China Normal University, China | ||
14:45 15mTalk | Test Amplification for REST APIs Using "Out-of-the-box" Large Language Models Journal First Track Tolgahan Bardakci University of Antwerp and Flanders Make, Serge Demeyer University of Antwerp and Flanders Make vzw, Mutlu Beyazıt University of Antwerp and Flanders Make vzw | ||
15:00 7mTalk | Preserving Concurrency-Revealing Seeds in Fuzzing of Concurrent Programs via Tuple-Based Coverage Evaluation Early Research Achievement (ERA) Track Junjie Huang Xidian University, Cheng Wen Xidian University, Jie Su Xidian University, Zhiwu Xu Shenzhen University, Bin Yu Xidian University, Shengchao Qin Xidian University, Cong Tian Xidian University Media Attached | ||
15:07 7mTalk | CV: Interactive Visualization of Verification Results Tool Demo Track Vitalii Mordan Trusted AI Research Center, Vadim Mutilin ISP RAS Research Center for Trusted Artificial Intelligence Pre-print Media Attached | ||
15:14 7mTalk | MuSe: a Mutation Testing Plugin for the Remix IDE Tool Demo Track Gerardo Iuliano University of Salerno, Daniele Carangelo , Carmine Calabrese , Dario Di Nucci University of Salerno | ||