mod tests {

use rand::Rng as _;

use crate::{

diff_count::{sim_hash::SIM_BUCKETS, GeoDiffCount7},

test_rng::prng_test_harness,

};

#[test]

fn sim_hash_iter_min_matches() {

prng_test_harness(100, |rng| {

let i = rng.random_range(0..1000);

let filter = GeoDiffCount7::pseudorandom_filter(i);

let expected_diff = rng.random_range(0..i);

let (iter, min_matches) = filter.sim_hashes_search(expected_diff);

let actual_count = iter.count();

let expected_min_matches = actual_count

.saturating_sub(expected_diff)

.max(SIM_BUCKETS / 2);

assert_eq!(min_matches, expected_min_matches)

});

}