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Xin Zhang

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Jul 2026

Beyond Fail-to-Pass: Iterative Hardening of Co-Generated Bug Reproduction Tests and Fixes

CoHarden is proposed, a co-generation framework that uses the Lax signal as an in-loop convergence criterion that generates a test before any fix, then iteratively hardens the test and fix against surviving mutation patches until the generated test no longer admits Lax regressions.

Yuhao Tan, Zhibang Yang, Fangkai Yang et al. · 1 citation
#software testing Preprint Aug 2026

DPIAgent: Divide, Protocol, Isolate for Agentic Reproduction Test Generation

DPIAgent is proposed, a structured agentic framework built on three principles, Divide, Protocol, Isolate (DPI), that mitigates compound-objective ambiguity and goal drift, and shows that architectural structure and backbone capability are complementary axes rather than substitutes, demonstrating DPI's generalizability...

Hao Liu, Steven Liu, Xin Zhang et al. · 0 citations

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