lez-fuzzing/fuzz_props/src/lib.rs

//! Fuzzing property library: invariant framework + input generators.

#![allow(clippy::missing_docs_in_private_items)]

pub mod arbitrary_types;
pub mod generators;
pub mod invariants;

#[cfg(test)]
mod seed_gen {
    use std::fs;
    use std::path::Path;

    #[test]
    fn generate_seeds() {
        let tx = common::test_utils::produce_dummy_empty_transaction();
        let bytes = borsh::to_vec(&tx).unwrap();

        // CARGO_MANIFEST_DIR is lez-fuzzing/fuzz_props/ at compile time.
        // Tests inherit the package directory as cwd, so we must use an
        // absolute base rather than a bare relative path.
        let workspace_root = Path::new(env!("CARGO_MANIFEST_DIR"))
            .parent()
            .expect("fuzz_props is one level below the workspace root");

        let targets = [
            "fuzz/corpus/fuzz_transaction_decoding/seed_empty_tx",
            "fuzz/corpus/fuzz_stateless_verification/seed_empty_tx",
            "fuzz/corpus/fuzz_state_transition/seed_empty_tx",
        ];
        for rel in &targets {
            let p = workspace_root.join(rel);
            if let Some(parent) = p.parent() {
                fs::create_dir_all(parent).ok();
            }
            fs::write(&p, &bytes).ok();
        }
    }
}