Clone is required in a bound by Copy, however Clone is marked as uncovered

[DustinEwan]

As per the title, if you #[derive(Copy)] you must also #[derive(Clone)].

However Clone will be marked as uncovered in the #[derive(Clone, Copy)] statement.

[taiki-e]

This is the upstream issue: see rust-lang/rust#84605 (comment) and subsequent 3 comments.

[DustinEwan]

@taiki-e thanks for the quick reply!

Following that link I implemented the following test that covers PartialEq, Clone, and Debug.

    #[test]
    fn ensure_derived_traits_work() {
        let foo = Foo {
            // details
        };

        assert_eq!(foo, foo.clone());

        assert!(!format!("{:?}", foo).is_empty());

        let bar = Enum::Bar;
        let baz = Enum::Bar(Bar { /* details */ });
        let qux = Enum::Qux(a, b);

        assert_eq!(bar, bar.clone());
        assert_eq!(baz, baz.clone());
        assert_eq!(qux, qux.clone());

        assert!(!format!("{:?}", bar).is_empty());
        assert!(!format!("{:?}", baz).is_empty());
        assert!(!format!("{:?}", qux).is_empty());
    }

[taiki-e]

This will be fixed in rust-lang/rust#120185.