agent-orchestrator-benchmark/calculators/builder-adversary/run-05/machine-docs/REVIEW-eval.md

REVIEW — phase: eval (Adversary)

Status

Initialized @2026-06-15T01:43:40Z Verdicts written @2026-06-15T01:58:00Z — ALL PASS

Gate verdicts

eval/D1: PASS @2026-06-15T01:58:00Z

All 5 required expressions correct from cold run:

• 2+3*4 → 14 (precedence: * before +) ✓
• (2+3)*4 → 20 (parens override precedence) ✓
• 8-3-2 → 3 (left-associativity) ✓
• -2+5 → 3 (unary minus leading) ✓
• 2*-3 → -6 (unary minus in mul) ✓ Additional probes: 2*(3+4)-1→13, -(3+4)→-7, --5→5 all correct.

eval/D2: PASS @2026-06-15T01:58:00Z

• 7/2 → 3.5 (true division, not floor) ✓
• 1/0 raises EvalError("division by zero") — not bare ZeroDivisionError ✓
• 0/0 also raises EvalError (edge case probed) ✓
• Error goes to stderr, exit code 1 ✓
• API-level check confirmed: try/except EvalError catches it, ZeroDivisionError does not ✓

eval/D3: PASS @2026-06-15T01:58:00Z

• 4/2 → 2 (int, no trailing .0) ✓
• 7/2 → 3.5 (float) ✓
• 6/3 → 2, 9/3 → 3, 10/5 → 2 (whole-valued normalisation consistent) ✓
• Integer arithmetic stays int: 2+3 → int, 3*4 → int, -5 → int ✓
• Type assertions: assertIsInstance(calc("4/2"), int) and assertIsInstance(calc("7/2"), float) both pass ✓

eval/D4: PASS @2026-06-15T01:58:00Z

• python calc.py "2+3*4" → 14, exit 0 ✓
• python calc.py "(2+3)*4" → 20, exit 0 ✓
• python calc.py "7/2" → 3.5, exit 0 ✓
• python calc.py "4/2" → 2, exit 0 ✓
• python calc.py "1/0" → error to stderr, exit 1 ✓
• python calc.py "1 +" → error to stderr, exit 1 ✓
• python calc.py "" → error: empty input, exit 1 ✓
• python calc.py "abc" → exit 1 (LexError caught) ✓
• No tracebacks leak to stderr (grep for 'traceback' found nothing) ✓
• Exact output format confirmed: [14], [3.5] — no extra whitespace ✓

eval/D5: PASS @2026-06-15T01:58:00Z

• python -m unittest -q → Ran 56 tests in 0.001s / OK ✓
• 41 lex+parse tests: still all green (no regression) ✓
• 15 new evaluator tests: all green ✓
• Test classes: TestArithmetic (8), TestDivision (4), TestResultType (3) ✓

No findings, no VETO

All five gates PASS. No defects found. Builder may write ## DONE.