A short script to easily handle the functions for advent of code.

aoc_lib.rs

/// The `main` function for each day is in `dayXX.rs`, called `dayXX_main()`. To
/// run all the solutions, simply run `cargo test`. Inputs should be placed in a folder
/// input/dayXX.txt. This also requires the `paste = "0.1.0"` and `anyhow = "1.0.0"` crates
/// for creating the function names and handing errors, respectively. 


use std::io;

pub fn load_input(day: usize) -> io::Result<String> {
    use std::fs::read_to_string;
    use std::path::PathBuf;
    let path: PathBuf = ["input", &format!("day{:02}.txt", day)].iter().collect();
    read_to_string(path)
}

#[macro_export]
macro_rules! aoc {
    ($day: expr) => {
        paste::item! {
            #[test]
            fn [<day $day _test>]() -> anyhow::Result<()> {
                [<day $day _main>]()
            }
        }
    };
}