fmt.rs

topic!(ErgotFmtTxTopic, ErgotFmtTx<'a>, "ergot/.well-known/fmt");
topic!(ErgotFmtRxTopic, ErgotFmtRx<'a>, "ergot/.well-known/fmt");

#[derive(Serialize)]
pub struct ErgotFmtTx<'a> {
    inner: core::fmt::Arguments<'a>,
}

#[derive(Serialize, Deserialize)]
pub struct ErgotFmtRx<'a> {
    inner: &'a str,
}

impl<'a> Schema for ErgotFmtTx<'a> {
    const SCHEMA: &'static NamedType = <&str as Schema>::SCHEMA;
}

impl<'a> Schema for ErgotFmtRx<'a> {
    const SCHEMA: &'static NamedType = <&str as Schema>::SCHEMA;
}

#[cfg(test)]
mod test {
    use super::*;
    use crate::traits::Topic;

    fn taker(x: &ErgotFmtTx<'_>) -> Vec<u8> {
        postcard::to_stdvec(x).unwrap()
    }

    #[test]
    fn fmt_punning_works() {
        assert_eq!(ErgotFmtTxTopic::TOPIC_KEY, ErgotFmtRxTopic::TOPIC_KEY);

        let x = 10;
        let y = "world";
        let res = taker(&ErgotFmtTx {
            inner: format_args!("hello {x}, {}", y),
        });

        let res = postcard::from_bytes::<ErgotFmtRx<'_>>(&res).unwrap();
        assert_eq!(res.inner, "hello 10, world");
    }
}