auto-trait test / autotrait hack

auto_traits.rs

// ensures you get compiler warnings if your type suddenly (unexpectantly) break autotraits
// from Rust for Rustaceans Book

mod tests {

    use ipns_entry::entry::IpnsEntry;

    fn is_normal<T: Sized + Send + Sync + Unpin>() {}

    #[test]
    fn normal_types() {
        is_normal::<IpnsEntry>();
    }
}