Minimal Fuzzing Without The Pain

This post is part of the Input Coverage > Code Coverage series.

Keep it boring.

• One entry point: process(data: &[u8]).
• Property tests call it.
• libFuzzer calls it (cargo-fuzz).
• AFL++ calls it (cargo-afl).
• A Makefile gives two targets: fuzz and afl.

Skeleton:

your-crate/
  src/lib.rs
  tests/prop.rs
  fuzz/fuzz_targets/target.rs
  fuzz-afl/src/main.rs
  Makefile
  scripts/afl.sh

process is the only place to exercise logic. All harnesses import it.

Short runs locally. Long runs in CI if you must. Store crash inputs as tests.

Next: Enterprise Case 1: Money Parser, Unicode Minus