feat(fuzz): coverage-guided fuzz testing pipeline with cargo-fuzz#460
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Smartdevs17 merged 2 commits intoMay 28, 2026
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- subscription: full lifecycle fuzzing (create_plan → subscribe → charge → pause → resume → cancel) - pricing: boundary price values, refund math, charge timing - rate_limit: per-function rate-limit enforcement windows - state_machine: illegal state transitions (double-cancel, charge-while-paused, etc.) - utils: shared helpers for byte parsing, env setup, time management - .gitignore for cargo-fuzz artifacts and corpus directories - seed corpus files for all 4 targets with edge-case inputs Each target parses raw bytes from libFuzzer into a command stream and catches panics to keep fuzzing on invalid inputs.
… triage - 4-target matrix (subscription, pricing, rate_limit, state_machine) running in parallel - nightly toolchain + cargo-fuzz installation - seed corpus copied from .github/corpus/ and cached between runs - 30-minute run per target with AddressSanitizer - crash artifacts uploaded on failure with 14-day retention - corpus uploaded weekly for coverage continuity - scheduled weekly run (Monday 06:00 UTC) - explicit error notification with local reproduction command
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Summary
Implements issue #438 — a production-ready fuzz testing pipeline using
cargo-fuzz(libFuzzer) with 4 coverage-guided targets, CI integration, seed corpus management, and crash triage workflow.Changes
contracts/fuzz/— cargo-fuzz crate (2 commits).github/workflows/fuzz-test.yml— CI rewriteCloses #438