Function assert_not_empty

crates/data-structures/src/small_map.rs:231–238

Asserts that the map behaves consistently as a non-empty map.

(map: &mut Map<N, M>, len: usize)

    /// Asserts that the map behaves consistently as a non-empty map.
    fn assert_not_empty<const N: usize, const M: usize>(map: &mut Map<N, M>, len: usize) {
        assert!(!map.is_empty());
        assert_eq!(map.len(), len);

        assert_eq!(map.iter().count(), len);
        assert_eq!(map.keys().count(), len);
        assert_eq!(map.values().count(), len);
    }

    /// Extends the map with entries and then clears it,
    /// asserting correct behavior before and after.