systemic-game-design-course/course/03-death-step/tests/ts/test_03.test.ts

// Module 3: Deferred death. Each test matches a heading in scenarios.md.
import { expect, test } from "vitest";
import { newGame } from "../src/harness";

const fillers = (n: number): string[] => Array(n).fill("Test Filler");

test("test_03_removed_only_after_sequence", () => {
  const g = newGame({ decks: [fillers(5), []] });
  const h = g.summon("Loot Hoarder", 0);
  const s = g.summon("Armorsmith", 0);
  g.clearLog();

  g.cast("Whirlwind", 0);

  const hand = g.hand(0);
  expect(hand).toHaveLength(1);
  const c = hand[0];
  expect(g.log()).toEqual([
    { type: "SpellCast", card: "Whirlwind" },
    { type: "Damaged", target: h, amount: 1 },
    { type: "Damaged", target: s, amount: 1 },
    { type: "Triggered", source: s, trigger: "damaged" },
    { type: "ArmorGained", player: 0, amount: 1 },
    { type: "Triggered", source: s, trigger: "damaged" },
    { type: "ArmorGained", player: 0, amount: 1 },
    { type: "Destroyed", id: h },
    { type: "DeathPhase", round: 1 },
    { type: "Triggered", source: h, trigger: "deathrattle" },
    { type: "Drew", player: 0, id: c },
  ]);
  expect(g.zoneOf(h)).toBe("graveyard");
  expect(g.board(0)).toEqual([s]);
  expect(g.armor(0)).toBe(2);
});

test("test_03_chained_death_phases", () => {
  const g = newGame();
  const golem = g.summon("Harvest Golem", 0);
  const ghoul = g.summon("Unstable Ghoul", 0);
  const r = g.summon("Test Reactor", 0);
  g.dealDamage(golem, 2);
  g.clearLog();

  g.dealDamage(ghoul, 3);

  const d = g.board(0)[0];
  expect(g.log()).toEqual([
    { type: "Damaged", target: ghoul, amount: 3 },
    { type: "Destroyed", id: ghoul },
    { type: "DeathPhase", round: 1 },
    { type: "Triggered", source: ghoul, trigger: "deathrattle" },
    { type: "Damaged", target: golem, amount: 1 },
    { type: "Damaged", target: r, amount: 1 },
    { type: "Destroyed", id: golem },
    { type: "DeathPhase", round: 2 },
    { type: "Triggered", source: golem, trigger: "deathrattle" },
    { type: "Summoned", id: d },
  ]);
  expect(g.nameOf(d)).toBe("Damaged Golem");
  expect(g.board(0)).toEqual([d, r]);
  expect(g.zoneOf(ghoul)).toBe("graveyard");
  expect(g.zoneOf(golem)).toBe("graveyard");
  expect(g.health(r)).toBe(4);
});

test("test_03_simultaneous_removal", () => {
  const g = newGame({ decks: [fillers(5), []] });
  const h1 = g.summon("Loot Hoarder", 0);
  const h2 = g.summon("Loot Hoarder", 0);
  g.clearLog();

  g.cast("Whirlwind", 0);

  const hand = g.hand(0);
  expect(hand).toHaveLength(2);
  const [c1, c2] = hand;
  expect(g.log()).toEqual([
    { type: "SpellCast", card: "Whirlwind" },
    { type: "Damaged", target: h1, amount: 1 },
    { type: "Damaged", target: h2, amount: 1 },
    { type: "Destroyed", id: h1 },
    { type: "Destroyed", id: h2 },
    { type: "DeathPhase", round: 1 },
    { type: "Triggered", source: h1, trigger: "deathrattle" },
    { type: "Drew", player: 0, id: c1 },
    { type: "Triggered", source: h2, trigger: "deathrattle" },
    { type: "Drew", player: 0, id: c2 },
  ]);
  expect(g.zoneOf(h1)).toBe("graveyard");
  expect(g.zoneOf(h2)).toBe("graveyard");
  expect(g.board(0)).toEqual([]);
});

test("test_03_destroy_marks_pending", () => {
  const g = newGame();
  const golem = g.summon("Harvest Golem", 0);
  g.clearLog();

  g.destroy(golem);

  const board = g.board(0);
  expect(board).toHaveLength(1);
  const d = board[0];
  expect(g.log()).toEqual([
    { type: "Destroyed", id: golem },
    { type: "DeathPhase", round: 1 },
    { type: "Triggered", source: golem, trigger: "deathrattle" },
    { type: "Summoned", id: d },
  ]);
  expect(g.health(golem)).toBe(3);
  expect(g.zoneOf(golem)).toBe("graveyard");
  expect(g.nameOf(d)).toBe("Damaged Golem");
});

test("test_03_summon_position_after_simultaneous_deaths", () => {
  const g = newGame({ decks: [fillers(5), []] });
  const h = g.summon("Loot Hoarder", 0);
  const golem = g.summon("Harvest Golem", 0);
  const r = g.summon("Test Reactor", 0);
  g.dealDamage(golem, 2);
  g.clearLog();

  g.cast("Whirlwind", 0);

  const hand = g.hand(0);
  expect(hand).toHaveLength(1);
  const c = hand[0];
  const summoned = g.log().flatMap((e) => (e.type === "Summoned" ? [e.id] : []));
  expect(summoned).toHaveLength(1);
  const d = summoned[0];
  expect(g.log()).toEqual([
    { type: "SpellCast", card: "Whirlwind" },
    { type: "Damaged", target: h, amount: 1 },
    { type: "Damaged", target: golem, amount: 1 },
    { type: "Damaged", target: r, amount: 1 },
    { type: "Destroyed", id: h },
    { type: "Destroyed", id: golem },
    { type: "DeathPhase", round: 1 },
    { type: "Triggered", source: h, trigger: "deathrattle" },
    { type: "Drew", player: 0, id: c },
    { type: "Triggered", source: golem, trigger: "deathrattle" },
    { type: "Summoned", id: d },
  ]);
  expect(g.nameOf(d)).toBe("Damaged Golem");
  expect(g.board(0)).toEqual([d, r]);
  expect(g.zoneOf(h)).toBe("graveyard");
  expect(g.zoneOf(golem)).toBe("graveyard");
});

test("test_03_simultaneous_summons_keep_board_order", () => {
  const g = newGame();
  const a = g.summon("Harvest Golem", 0);
  const b = g.summon("Harvest Golem", 0);
  const r = g.summon("Test Reactor", 0);
  g.dealDamage(a, 2);
  g.dealDamage(b, 2);
  g.clearLog();

  g.cast("Whirlwind", 0);

  const summoned = g.log().flatMap((e) => (e.type === "Summoned" ? [e.id] : []));
  expect(summoned).toHaveLength(2);
  const [da, db] = summoned;
  expect(g.log()).toEqual([
    { type: "SpellCast", card: "Whirlwind" },
    { type: "Damaged", target: a, amount: 1 },
    { type: "Damaged", target: b, amount: 1 },
    { type: "Damaged", target: r, amount: 1 },
    { type: "Destroyed", id: a },
    { type: "Destroyed", id: b },
    { type: "DeathPhase", round: 1 },
    { type: "Triggered", source: a, trigger: "deathrattle" },
    { type: "Summoned", id: da },
    { type: "Triggered", source: b, trigger: "deathrattle" },
    { type: "Summoned", id: db },
  ]);
  expect(g.nameOf(da)).toBe("Damaged Golem");
  expect(g.nameOf(db)).toBe("Damaged Golem");
  expect(g.board(0)).toEqual([da, db, r]);
  expect(g.zoneOf(a)).toBe("graveyard");
  expect(g.zoneOf(b)).toBe("graveyard");
});