use structural_convert::StructuralConvert; #[derive(Debug, PartialEq)] struct Q(u32); #[derive(Debug, PartialEq, StructuralConvert)] #[convert(try_from(Q))] struct W(u32); #[test] fn fields_unnamed() { #[derive(Debug, PartialEq)] struct Rhs(i8, Option); #[derive(Debug, PartialEq, StructuralConvert)] #[convert(try_from(Rhs))] struct Lhs(i32, Option); assert_eq!(Lhs(1, Some(W(2))), Rhs(1, Some(Q(2))).try_into().unwrap()); } #[test] fn fields_named() { #[derive(Debug, PartialEq)] struct Rhs { z: i8, x: Option, } #[derive(Debug, PartialEq, StructuralConvert)] #[convert(try_from(Rhs))] struct Lhs { z: i32, x: Option, } assert_eq!( Lhs { z: 1, x: Some(W(2)) }, Rhs { z: 1, x: Some(Q(2)) } .try_into() .unwrap() ); }