#[derive(Debug, Eq, PartialEq, Serialize, Deserialize)]

fn roundtrip() {

    let s = S {

        a: std::i8::MIN,

        b: std::i16::MIN,

        c: std::i32::MIN,

        d: std::i64::MIN,

        #[cfg(feature = "integer128")]

        e: std::i128::MIN,

        f: std::u8::MAX,

        g: std::u16::MAX,

        h: std::u32::MAX,

        i: std::u64::MAX,

        #[cfg(feature = "integer128")]

        j: std::u128::MAX,

    };

    let serialized = ron::ser::to_string(&s).unwrap();

    let deserialized = ron::de::from_str(&serialized).unwrap();

    assert_eq!(s, deserialized,);

}