pub fn random_test<F>(iterations: usize, mut test_function: F)

where

    F: FnMut(&mut StdRng),

    test_logger();

    if let Ok(seed_str) = std::env::var("MERC_SEED") {

    }

    let seed: u64 = rand::random();

    println!("random seed: {seed} (use MERC_SEED=<seed> to set fixed seed)");

    let mut rng = StdRng::seed_from_u64(seed);

    for _ in 0..iterations {

        test_function(&mut rng);

    }

}

pub fn random_test_threads<C, F, G>(iterations: usize, num_threads: usize, init_function: G, test_function: F)

where

    C: Send + 'static,

    F: Fn(&mut StdRng, &mut C) + Copy + Send + Sync + 'static,

    G: Fn() -> C,

    test_logger();

    let mut threads = vec![];

    let seed: u64 = rand::random();

    println!("seed: {seed}");

    let mut rng = StdRng::seed_from_u64(seed);

    for _ in 0..num_threads {

        let mut rng = StdRng::seed_from_u64(rng.next_u64());

        let mut init = init_function();

        threads.push(std::thread::spawn(move || {

            for _ in 0..iterations {

                test_function(&mut rng, &mut init);

            }

        }));

    for thread in threads {

        let _ = thread.join();

    }

}