rustlings/exercises/structs/structs1.rs

// structs1.rs
// Address all the TODOs to make the tests pass!
// Execute `rustlings hint structs1` or use the `hint` watch subcommand for a hint.



struct ColorClassicStruct {
    red:usize,
    green:usize,
    blue:usize,
}

impl ColorClassicStruct {
    fn new(red:usize, green:usize, blue:usize) -> ColorClassicStruct {
        ColorClassicStruct { red: (red), green: (green), blue: (blue) }
    }
}
struct ColorTupleStruct(i32, i32, i32);

#[derive(Debug)]
struct UnitLikeStruct;

#[cfg(test)]
mod tests {
    use super::*;

    #[test]
    fn classic_c_structs() {
        // TODO: Instantiate a classic c struct!
        let green = ColorClassicStruct::new(0,255,0);

        assert_eq!(green.red, 0);
        assert_eq!(green.green, 255);
        assert_eq!(green.blue, 0);
    }

    #[test]
    fn tuple_structs() {
        // TODO: Instantiate a tuple struct!
        let green = (0, 255, 0);

        assert_eq!(green.0, 0);
        assert_eq!(green.1, 255);
        assert_eq!(green.2, 0);
    }

    #[test]
    fn unit_structs() {
        // TODO: Instantiate a unit-like struct!
        let unit_like_struct = UnitLikeStruct;
        let message = format!("{:?}s are fun!", unit_like_struct);

        assert_eq!(message, "UnitLikeStructs are fun!");
    }
}