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TestCaseMig: LLM-Driven Test Case Migration for Evolving Codebases
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DOI：10.1007/978-3-032-00828-2_31.png)
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Abstract
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As software systems evolve, test cases must adapt to code changes to remain valid and effective. Traditional test migration approaches, including symbolic execution and diff-based heuristics, often require significant manual effort and struggle to handle complex behavioral changes. Recent advances in large language models (LLMs) offer new opportunities for context-aware and automated test adaptation. However, existing LLM-based approaches are not well-suited for test case migration under evolving code, as they typically lack explicit modeling of code changes and original test context. In this paper, we present TestCaseMig, a framework that integrates LLMs with static analysis to migrate existing test cases in response to code modifications. TestCaseMig constructs change-sensitive, context-rich prompts and employs a multi-round, feedback-driven generation process with validation and coverage analysis to ensure the correctness, completeness, and adaptability of migrated test cases.
Keywords:
Test case migration
Large language models
Static analysis
Software evolution
Automated testing
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