Function fallback_on_empty_coord

nodedb-cluster/src/array_routing.rs:260–264

()

    #[test]
    fn fallback_on_empty_coord() {
        let s = vshard_for_array_coord("prices", &[], &[]);
        let expected = array_vshard_for_name("prices");
        assert_eq!(s, expected, "empty coord must fall back to from_collection");
    }

    #[test]
    fn fallback_on_zero_extent() {