#[macro_use] extern crate factori; pub struct Vehicle { number_wheels: u8, electric: bool, } pub mod vehicle_factory { use super::Vehicle; factori!(Vehicle, { default { number_wheels = 4, electric = false, } mixin bike { number_wheels = 2, } mixin electric { electric = true, } }); } use vehicle_factory::*; #[test] fn simple_struct() { let default = create!(Vehicle); assert_eq!(default.number_wheels, 4); assert_eq!(default.electric, false); } #[test] fn override_field() { let three_wheels = create!(Vehicle, number_wheels: 3); assert_eq!(three_wheels.number_wheels, 3); } #[test] fn one_mixin() { let bike = create!(Vehicle, :bike); assert_eq!(bike.number_wheels, 2); assert_eq!(bike.electric, false); } #[test] fn mixin_and_override() { let electric_bike = create!(Vehicle, :bike, electric: true); assert_eq!(electric_bike.number_wheels, 2); assert_eq!(electric_bike.electric, true); } #[test] fn two_mixins() { let electric_bike = create!(Vehicle, :bike, :electric); assert_eq!(electric_bike.number_wheels, 2); assert_eq!(electric_bike.electric, true); }