TestPrune: pruning regression tests to unblock AI-driven autonomous bug fixing
burkov · x · 2026-11-14
AI systems increasingly fix bug reports autonomously, but validating fixes is bottlenecked by enterprise regression suites that take tens of minutes, exceed model context windows, produce noisy flaky failures, and inflate costs—while skipping regression tests risks breaking functionality.
This paper introduces TestPrune, an automated technique that formalizes issue-based test minimization: selecting only the small subset of existing regression tests directly relevant to a newly reported issue, when the pending fix is still unknown.
Key points:
- Formalizes the issue-based test minimization problem
- Automatically identifies and executes only relevant tests
- Targets large-scale repos, context overflow, and flaky-test noise in enterprise settings
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