advent-of-code/2020/setup_day.sh

#!/bin/sh

today=$(date +%d)
# this assumes that your puzzle input is already in your clipboard
xsel -b > inputs/day$today
# add trailing newline if necessary
sed -i -e '$a\' inputs/day$today

echo '#![feature(test)]
extern crate test;
use std::env;

type Parsed = Vec<usize>;

fn read_input() -> String {
    std::fs::read_to_string(env::args().nth(1).filter(|n| n != "--bench").unwrap_or_else(||String::from("inputs/day'$today'"))).unwrap()
}

fn parse_input(raw: &str) -> Parsed {
    unimplemented!()
}

fn part1(parsed: &Parsed) -> usize {
    unimplemented!()
}

fn part2(parsed: &Parsed) -> usize {
    unimplemented!()
}

fn main() {
    let input = parse_input(&read_input());
    println!("Part 1: {}", part1(&input));
    println!("Part 2: {}", part2(&input));
}

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

    const TEST_INPUT: &str = "";

    #[test]
    fn part1_test() {
        let input = parse_input(TEST_INPUT);
        assert_eq!(part1(&input), 0);
    }

    #[test]
    fn part2_test() {
        let input = parse_input(TEST_INPUT);
        assert_eq!(part2(&input), 0);
    }

    #[bench]
    fn bench_input_parsing(b: &mut test::Bencher) {
        let raw = read_input();
        b.iter(|| parse_input(black_box(&raw)))
    }

    #[bench]
    fn bench_part1(b: &mut test::Bencher) {
        let input = parse_input(&read_input());
        b.iter(|| assert_eq!(part1(black_box(&input)), 0));
    }

    #[bench]
    fn bench_part2(b: &mut test::Bencher) {
        let input = parse_input(&read_input());
        b.iter(|| assert_eq!(part2(black_box(&input)), 0));
    }
}' > src/bin/day$today.rs