fuzz

What problem does it solve?

OCaml fuzz testing helps you verify parsers and encoders by generating random inputs and checking invariants, preventing crashes when faced with unexpected data.

Core Features & Use Cases

• One fuzz file per module: tests lib/foo.ml from fuzz_foo.ml for organized coverage.
• Roundtrip and crash-safety testing: ensure decode(encode(x)) == x and that parsers never crash on arbitrary data.
• State machine and boundary coverage: test transitions and edge cases in protocol implementations.
• Easy organization of fuzz suites for large codebases: assemble suites across modules and run with a single dune target.

Quick Start

Install OCaml tooling (opam, dune) and Crowbar/borealis, create a fuzz/ directory with fuzz.ml that links modules, write fuzz_<module>.ml files that define tests, then build and run with dune exec fuzz/fuzz.exe.