Formal models and scripts: assert-only-input-checks-sweep-siblings-of-16919

Tools: Python

These are the working models and scripts this part of the hunt used. Some encode the code as it is (a counterexample is the expected result), others a fixed or correct variant; read the header comment of each file. Paths inside them were replaced by placeholders such as $LUCENE (a Lucene checkout) and $WORK.

Findings

• Four Lucene test methods never run because their names do not start with lowercase 'test' (TestXYRectangle.tesInvalidMinMaxX/Y, TestOperations.TestOptionalOptionalAcceptsState0, TestCommonGramsFilter.TestFirstAndLastStopWord); the two TestXYRectangle ones would also fail if run, because they look for '5 > 4' while XYRectangle reports '5.0 > 4.0', so XYRectangle's reversed-bounds check has had no running test since 2020 (finding LFV-1013; repro · finding page)

Files

• test-methods-misnamed-never-run/model/scan_misnamed_tests.py (used for LFV-1013)

How to run

• Python: python3 <file>.py; scripts that import z3 need the z3-solver package.

Snapshot of 2026-11-04. AI-assisted; not yet triaged by a human Lucene committer. Feedback: open an issue in lucene-ai-bug-hunt.