hangman.rs

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

fn make_guess(g: Game, c: char) -> Game {
    let mut new_game = g;
    new_game.guesses.push(c);
    if !new_game.word.contains(c) {
        new_game.tries_left -= 1;
    }
    new_game
}

#[derive(Debug, PartialEq, Eq)]
struct Game {
    word: String,
    guesses: Vec<char>,
    tries_left: u16,
}

impl Game {
    fn new(s: String, v: Vec<char>, t: u16) -> Game {
        Game{word: s, guesses: v, tries_left: t}
    }

}

#[test]
fn make_a_correct_guess() {
    let game = Game::new("hangman".to_string(), vec!['a'], 3);
    let new_game = make_guess(game, 'g');
    let expected_game = Game::new("hangman".to_string(), vec!['a', 'g'], 3);
    assert_eq!(new_game, expected_game);
}

#[test]
fn make_a_false_guess() {
    let game = Game::new("hangman".to_string(), vec!['a'], 3);
    let new_game = make_guess(game, 'x');
    let expected_game = Game::new("hangman".to_string(), vec!['a', 'x'], 2);
    assert_eq!(new_game, expected_game);
}

#[test]
fn make_an_emoji_guess() {
    let game = Game::new("hangman".to_string(), vec!['a'], 3);
    let new_game = make_guess(game, '😃');
    let expected_game = Game::new("hangman".to_string(), vec!['a', '😃'], 2);
    assert_eq!(new_game, expected_game);
}