fn main() {
    println!("Hello, world!");
}

#[derive(Debug, PartialEq)]
pub enum Value {
    Num(i32),
}

pub fn interpret(arg: &str) -> Value {
    Value::Num(1)
}

#[cfg(test)]
mod tests {
    use crate::{interpret, Value::Num};

    #[test]
    fn it_works() {
        let result = interpret("1");
        assert_eq!(Num(1), result);
    }
}