Automated Unit Test Improvement using Large Language Models at Meta
<|reference_start|>Automated Unit Test Improvement using Large Language Models at Meta: This paper describes Meta's TestGen-LLM tool, which uses LLMs to automatically improve existing human-written tests. TestGen-LLM verifies that its generated test classes successfully clear a set of filters that assure measurable improvement over the original test suite, thereby eliminating problems due to LLM hallucination. We describe the deployment of TestGen-LLM at Meta test-a-thons for the Instagram and Facebook platforms. In an evaluation on Reels and Stories products for Instagram, 75% of TestGen-LLM's test cases built correctly, 57% passed reliably, and 25% increased coverage. During Meta's Instagram and Facebook test-a-thons, it improved 11.5% of all classes to which it was applied, with 73% of its recommendations being accepted for production deployment by Meta software engineers. We believe this is the first report on industrial scale deployment of LLM-generated code backed by such assurances of code improvement.<|reference_end|>
@article{alshahwan2024automated,
    title={Automated Unit Test Improvement using Large Language Models at Meta},
    author={Nadia Alshahwan, Jubin Chheda, Anastasia Finegenova, Beliz Gokkaya,
  Mark Harman, Inna Harper, Alexandru Marginean, Shubho Sengupta, Eddy Wang},
    journal={arXiv preprint arXiv:2402.09171},
    year={2024},
    archivePrefix={arXiv},
    eprint={2402.09171},
    primaryClass={cs.SE}
}