Add vera test contract-driven testing (#79)#168
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New `vera test` command generates inputs from requires() clauses via Z3 and executes compiled WASM to validate ensures() at runtime. Functions are classified by tier: Tier 1 (proved by Z3) reported as "verified", Tier 3 (runtime-checked) exercised with generated inputs, and generic/unsupported functions skipped. Features: - Z3-based input generation for Int, Nat, Bool parameters - Boundary value seeding before diversity loop - --json, --trials N, --fn name flags - E7xx error code range (E700-E702) - 24 new tests (1,100 total) Co-Authored-By: Claude <noreply@anthropic.invalid>
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Summary
vera testcommand: generates inputs fromrequires()clauses via Z3, executes compiled WASM, validatesensures()at runtime--json,--trials N,--fn nameflagsvera/tester.pymodule (~530 lines) with publictest()APITest plan
pytest tests/ -v-- 1,100 tests passmypy vera/-- clean (41 source files)python scripts/check_examples.py-- 14 examples passpython scripts/check_version_sync.py-- version consistentpython scripts/check_readme_examples.py-- README blocks parsevera test examples/safe_divide.vera-- smoke test worksvera test --json examples/factorial.vera-- JSON output worksCloses #79
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