use core_ext::convert::To;

struct A(u8);
impl To for A {}

struct B(u8);
impl From<A> for B {
    fn from(value: A) -> Self {
        Self(value.0 + 1)
    }
}
impl To for B {}

struct C(u8);
impl From<B> for C {
    fn from(value: B) -> Self {
        Self(value.0 + 2)
    }
}

#[cfg(test)]
mod snapshots {
    use crate::*;

    #[test]
    fn test_to() {
        // inline snapshots, see https://docs.rs/insta/latest/insta/#inline-snapshots
        insta::assert_yaml_snapshot!(A(1).to::<B>().0, @r###"
        ---
        2
        "###);
    }

    #[test]
    fn test_to_chain() {
        // regular snapshots, see ./snapshots
        insta::assert_yaml_snapshot!(A(5).to::<B>().to::<C>().0);
    }
}