Function example

diffus/src/diffable_impls/set.rs:57–69

()

    #[test]
    fn example() {
        let unity: std::collections::HashSet<_, _> = [1, 2, 3].iter().cloned().collect();
        let not_unity: std::collections::HashSet<_, _> = [1, 2, 4].iter().cloned().collect();

        if let Edit::Change(diff) = unity.diff(&not_unity) {
            assert!(diff[&1].is_copy());
            assert!(diff[&2].is_copy());
            assert!(diff[&3].is_remove());
            assert_eq!(diff[&4].insert().unwrap(), &4);
        } else {
            unreachable!()
        }
    }
}