Coding agent benchmarks miss review compliance gaps

SWE-Gate benchmark shows that passing functional tests does not guarantee acceptable patches in real-world software engineering.

Independent
Xin He · Yanlin Wang · Mingwei Liu · Jiachi Chen · Hongyu Zhang · Guanbin Li
Research Digest··2 min read

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Many repairs that pass functional tests fail to satisfy review constraints, showing functional-only evaluation overestimates agent ability.

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SWE-Gate is a new benchmark for software engineering agents that includes review constraints alongside functional tests. It creates 303 repair instances from 75 Python repositories, each with separate functional and constraint tests based on real PR review comments. When evaluated with four LLM backends, 221 out of 644 repairs that passed functional tests failed to meet the review constraints. This shows that evaluating only functional correctness overestimates an agent's ability to produce acceptable patches.

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