Function from_iter

cranelift/entity/src/primary.rs:550–560

()

    #[test]
    fn from_iter() {
        let mut m: PrimaryMap<E, usize> = PrimaryMap::new();
        m.push(12);
        m.push(33);

        let n = m.values().collect::<PrimaryMap<E, _>>();
        assert!(m.len() == n.len());
        for (me, ne) in m.values().zip(n.values()) {
            assert!(*me == **ne);
        }
    }

    #[test]
    fn from_vec() {