structural-convert 0.13.0

Derive conversion traits (From, Into, TryFrom, TryInto) when fields are structurally similar in enums or structs
Documentation 
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use structural_convert::StructuralConvert;

#[test]
fn variant_is_unit_non_targeted() {
    #[derive(Debug, PartialEq, StructuralConvert)]
    #[convert(try_into(Lhs))]
    enum Rhs {
        A,
        B,
    }

    #[derive(Debug, PartialEq)]
    enum Lhs {
        A,
        B,
        _C,
    }

    assert_eq!(Lhs::A, Rhs::A.try_into().unwrap());
    assert_eq!(Lhs::B, Rhs::B.try_into().unwrap());
}

#[test]
fn variant_is_unit_targeted() {
    #[derive(Debug, PartialEq, StructuralConvert)]
    #[convert(try_into(Lhs))]
    enum Rhs {
        A,
        B,
    }

    #[derive(Debug, PartialEq)]
    enum Lhs {
        A,
        B,
        _C,
    }

    assert_eq!(Lhs::A, Rhs::A.try_into().unwrap());
    assert_eq!(Lhs::B, Rhs::B.try_into().unwrap());
}

#[test]
fn variant_is_unnamed() {
    #[derive(Debug, PartialEq, StructuralConvert)]
    #[convert(try_into(Lhs))]
    enum Rhs {
        #[convert(try_into(Lhs, skip_after = 2))]
        A(i8, u32, u8),
    }

    #[derive(Debug, PartialEq)]
    enum Lhs {
        A(i32, u32),
    }

    assert_eq!(Lhs::A(1, 2), Rhs::A(1, 2, 3).try_into().unwrap());
}

#[test]
fn variant_is_named() {
    #[derive(Debug, PartialEq, StructuralConvert)]
    #[convert(try_into(Lhs))]
    enum Rhs {
        A {
            z: i8,
            x: u32,

            #[convert(try_into(Lhs::A, skip))]
            y: u8,
        },
    }

    #[derive(Debug, PartialEq)]
    enum Lhs {
        A { z: i32, x: u32 },
    }

    assert_eq!(
        Lhs::A { z: 1, x: 2 },
        Rhs::A { z: 1, x: 2, y: 3 }.try_into().unwrap()
    );
}