systemic-game-design-course/course/03-death-step/tests/rust/test_03.rs

// Module 3: Deferred death. Each test matches a heading in scenarios.md.
use engine::harness::*;

fn fillers(n: usize) -> Vec<String> {
    vec!["Test Filler".to_string(); n]
}

fn damaged(target: Id, amount: i32) -> GameEvent {
    GameEvent::Damaged { target, amount }
}

fn triggered(source: Id, trigger: &str) -> GameEvent {
    GameEvent::Triggered {
        source,
        trigger: trigger.to_string(),
    }
}

fn whirlwind() -> GameEvent {
    GameEvent::SpellCast {
        card: "Whirlwind".to_string(),
    }
}

/// The ids of the `Summoned` events in `log`, in order.
fn summoned_ids(log: &[GameEvent]) -> Vec<Id> {
    log.iter()
        .filter_map(|e| match e {
            GameEvent::Summoned { id } => Some(*id),
            _ => None,
        })
        .collect()
}

#[test]
fn test_03_removed_only_after_sequence() {
    let mut g = new_game(GameOpts {
        decks: Some([fillers(5), vec![]]),
    });
    let h = g.summon("Loot Hoarder", 0);
    let s = g.summon("Armorsmith", 0);
    g.clear_log();

    g.cast("Whirlwind", 0, None);

    let hand = g.hand(0);
    assert_eq!(hand.len(), 1);
    let c = hand[0];
    assert_eq!(
        g.log(),
        vec![
            whirlwind(),
            damaged(h, 1),
            damaged(s, 1),
            triggered(s, "damaged"),
            GameEvent::ArmorGained {
                player: 0,
                amount: 1
            },
            triggered(s, "damaged"),
            GameEvent::ArmorGained {
                player: 0,
                amount: 1
            },
            GameEvent::Destroyed { id: h },
            GameEvent::DeathPhase { round: 1 },
            triggered(h, "deathrattle"),
            GameEvent::Drew { player: 0, id: c },
        ]
    );
    assert_eq!(g.zone_of(h), Zone::Graveyard);
    assert_eq!(g.board(0), vec![s]);
    assert_eq!(g.armor(0), 2);
}

#[test]
fn test_03_chained_death_phases() {
    let mut g = new_game(GameOpts::default());
    let golem = g.summon("Harvest Golem", 0);
    let ghoul = g.summon("Unstable Ghoul", 0);
    let r = g.summon("Test Reactor", 0);
    g.deal_damage(golem, 2);
    g.clear_log();

    g.deal_damage(ghoul, 3);

    let d = g.board(0)[0];
    assert_eq!(
        g.log(),
        vec![
            damaged(ghoul, 3),
            GameEvent::Destroyed { id: ghoul },
            GameEvent::DeathPhase { round: 1 },
            triggered(ghoul, "deathrattle"),
            damaged(golem, 1),
            damaged(r, 1),
            GameEvent::Destroyed { id: golem },
            GameEvent::DeathPhase { round: 2 },
            triggered(golem, "deathrattle"),
            GameEvent::Summoned { id: d },
        ]
    );
    assert_eq!(g.name_of(d), "Damaged Golem");
    assert_eq!(g.board(0), vec![d, r]);
    assert_eq!(g.zone_of(ghoul), Zone::Graveyard);
    assert_eq!(g.zone_of(golem), Zone::Graveyard);
    assert_eq!(g.health(r), 4);
}

#[test]
fn test_03_simultaneous_removal() {
    let mut g = new_game(GameOpts {
        decks: Some([fillers(5), vec![]]),
    });
    let h1 = g.summon("Loot Hoarder", 0);
    let h2 = g.summon("Loot Hoarder", 0);
    g.clear_log();

    g.cast("Whirlwind", 0, None);

    let hand = g.hand(0);
    assert_eq!(hand.len(), 2);
    let (c1, c2) = (hand[0], hand[1]);
    assert_eq!(
        g.log(),
        vec![
            whirlwind(),
            damaged(h1, 1),
            damaged(h2, 1),
            GameEvent::Destroyed { id: h1 },
            GameEvent::Destroyed { id: h2 },
            GameEvent::DeathPhase { round: 1 },
            triggered(h1, "deathrattle"),
            GameEvent::Drew { player: 0, id: c1 },
            triggered(h2, "deathrattle"),
            GameEvent::Drew { player: 0, id: c2 },
        ]
    );
    assert_eq!(g.zone_of(h1), Zone::Graveyard);
    assert_eq!(g.zone_of(h2), Zone::Graveyard);
    assert_eq!(g.board(0), Vec::<Id>::new());
}

#[test]
fn test_03_destroy_marks_pending() {
    let mut g = new_game(GameOpts::default());
    let golem = g.summon("Harvest Golem", 0);
    g.clear_log();

    g.destroy(golem);

    let board = g.board(0);
    assert_eq!(board.len(), 1);
    let d = board[0];
    assert_eq!(
        g.log(),
        vec![
            GameEvent::Destroyed { id: golem },
            GameEvent::DeathPhase { round: 1 },
            triggered(golem, "deathrattle"),
            GameEvent::Summoned { id: d },
        ]
    );
    assert_eq!(g.health(golem), 3);
    assert_eq!(g.zone_of(golem), Zone::Graveyard);
    assert_eq!(g.name_of(d), "Damaged Golem");
}

#[test]
fn test_03_summon_position_after_simultaneous_deaths() {
    let mut g = new_game(GameOpts {
        decks: Some([fillers(5), vec![]]),
    });
    let h = g.summon("Loot Hoarder", 0);
    let golem = g.summon("Harvest Golem", 0);
    let r = g.summon("Test Reactor", 0);
    g.deal_damage(golem, 2);
    g.clear_log();

    g.cast("Whirlwind", 0, None);

    let hand = g.hand(0);
    assert_eq!(hand.len(), 1);
    let c = hand[0];
    let summoned = summoned_ids(&g.log());
    assert_eq!(summoned.len(), 1);
    let d = summoned[0];
    assert_eq!(
        g.log(),
        vec![
            whirlwind(),
            damaged(h, 1),
            damaged(golem, 1),
            damaged(r, 1),
            GameEvent::Destroyed { id: h },
            GameEvent::Destroyed { id: golem },
            GameEvent::DeathPhase { round: 1 },
            triggered(h, "deathrattle"),
            GameEvent::Drew { player: 0, id: c },
            triggered(golem, "deathrattle"),
            GameEvent::Summoned { id: d },
        ]
    );
    assert_eq!(g.name_of(d), "Damaged Golem");
    assert_eq!(g.board(0), vec![d, r]);
    assert_eq!(g.zone_of(h), Zone::Graveyard);
    assert_eq!(g.zone_of(golem), Zone::Graveyard);
}

#[test]
fn test_03_simultaneous_summons_keep_board_order() {
    let mut g = new_game(GameOpts::default());
    let a = g.summon("Harvest Golem", 0);
    let b = g.summon("Harvest Golem", 0);
    let r = g.summon("Test Reactor", 0);
    g.deal_damage(a, 2);
    g.deal_damage(b, 2);
    g.clear_log();

    g.cast("Whirlwind", 0, None);

    let summoned = summoned_ids(&g.log());
    assert_eq!(summoned.len(), 2);
    let (da, db) = (summoned[0], summoned[1]);
    assert_eq!(
        g.log(),
        vec![
            whirlwind(),
            damaged(a, 1),
            damaged(b, 1),
            damaged(r, 1),
            GameEvent::Destroyed { id: a },
            GameEvent::Destroyed { id: b },
            GameEvent::DeathPhase { round: 1 },
            triggered(a, "deathrattle"),
            GameEvent::Summoned { id: da },
            triggered(b, "deathrattle"),
            GameEvent::Summoned { id: db },
        ]
    );
    assert_eq!(g.name_of(da), "Damaged Golem");
    assert_eq!(g.name_of(db), "Damaged Golem");
    assert_eq!(g.board(0), vec![da, db, r]);
    assert_eq!(g.zone_of(a), Zone::Graveyard);
    assert_eq!(g.zone_of(b), Zone::Graveyard);
}