set.rs - mozsearch

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#![cfg(not(miri))] // FIXME: takes too long

use hashbrown::HashSet;

use rand::{distributions::Alphanumeric, rngs::SmallRng, Rng, SeedableRng};

use std::iter;

#[test]

fn test_hashset_insert_remove() {

    let mut m: HashSet<Vec<char>> = HashSet::new();

    let seed = u64::from_le_bytes(*b"testseed");

    let rng = &mut SmallRng::seed_from_u64(seed);

    let tx: Vec<Vec<char>> = iter::repeat_with(|| {

        rng.sample_iter(&Alphanumeric)

            .take(32)

            .map(char::from)

            .collect()

})

    .take(4096)

    .collect();

    // more readable with explicit `true` / `false`

    #[allow(clippy::bool_assert_comparison)]

    for _ in 0..32 {

        for x in &tx {

            assert_eq!(m.contains(x), false);

            assert_eq!(m.insert(x.clone()), true);

        for (i, x) in tx.iter().enumerate() {

            println!("removing {i} {x:?}");

            assert_eq!(m.remove(x), true);