Function reserve_zero_bytes_is_allowed

nodedb-mem/src/budget_guard.rs:213–221

()

    #[test]
    fn reserve_zero_bytes_is_allowed() {
        let gov = make_governor(&[(EngineId::Query, 1024)], 2048);
        let guard = gov
            .reserve(EngineId::Query, 0)
            .expect("zero bytes always fits");
        assert_eq!(guard.bytes(), 0);
        drop(guard);
        assert_eq!(gov.budget(EngineId::Query).unwrap().allocated(), 0);
    }

    #[test]
    fn second_reserve_after_drop_succeeds() {