systemic-game-design-course/course/04-interceptors/tests/ts/test_04.test.ts

// Module 4: Interceptors and "trigger twice". 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_04_baron_doubles", () => {
  const g = newGame({ decks: [fillers(5), []] });
  const b = g.summon("Baron Rivendare", 0);
  const h = g.summon("Loot Hoarder", 0);
  const golem = g.summon("Harvest Golem", 0);
  g.dealDamage(golem, 2);
  g.clearLog();

  g.cast("Whirlwind", 0);

  const hand = g.hand(0);
  expect(hand).toHaveLength(2);
  const [c1, c2] = hand;
  const board = g.board(0);
  expect(board).toHaveLength(3);
  expect(board[0]).toBe(b);
  const [, d1, d2] = board;
  expect(g.log()).toEqual([
    { type: "SpellCast", card: "Whirlwind" },
    { type: "Damaged", target: b, amount: 1 },
    { type: "Damaged", target: h, amount: 1 },
    { type: "Damaged", target: golem, 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: c1 },
    { type: "Triggered", source: h, trigger: "deathrattle" },
    { type: "Drew", player: 0, id: c2 },
    { type: "Triggered", source: golem, trigger: "deathrattle" },
    { type: "Summoned", id: d1 },
    { type: "Triggered", source: golem, trigger: "deathrattle" },
    { type: "Summoned", id: d2 },
  ]);
  expect(g.nameOf(d1)).toBe("Damaged Golem");
  expect(g.nameOf(d2)).toBe("Damaged Golem");
  expect(g.health(b)).toBe(6);
});

test("test_04_simultaneous_death_not_doubled", () => {
  const g = newGame({ decks: [fillers(5), []] });
  const b = g.summon("Baron Rivendare", 0);
  const h = g.summon("Loot Hoarder", 0);
  g.clearLog();

  g.cast("Twisting Nether", 0);

  expect(g.hand(0)).toHaveLength(1);
  const triggers = g.log().filter((e) => e.type === "Triggered" && e.source === h && e.trigger === "deathrattle");
  expect(triggers).toHaveLength(1);
  expect(g.zoneOf(b)).toBe("graveyard");
  expect(g.zoneOf(h)).toBe("graveyard");
});

test("test_04_two_barons_do_not_stack", () => {
  const g = newGame({ decks: [fillers(5), []] });
  g.summon("Baron Rivendare", 0);
  g.summon("Baron Rivendare", 0);
  const h = g.summon("Loot Hoarder", 0);
  g.clearLog();

  g.dealDamage(h, 1);

  const hand = g.hand(0);
  expect(hand).toHaveLength(2);
  const [c1, c2] = hand;
  expect(g.log()).toEqual([
    { type: "Damaged", target: h, amount: 1 },
    { type: "Destroyed", id: h },
    { type: "DeathPhase", round: 1 },
    { type: "Triggered", source: h, trigger: "deathrattle" },
    { type: "Drew", player: 0, id: c1 },
    { type: "Triggered", source: h, trigger: "deathrattle" },
    { type: "Drew", player: 0, id: c2 },
  ]);
});

test("test_04_aura_timing_order", () => {
  const g = newGame({ decks: [fillers(5), []] });
  const h = g.summon("Loot Hoarder", 0);
  const b = g.summon("Baron Rivendare", 0);
  g.clearLog();

  g.cast("Twisting Nether", 0);

  const hand = g.hand(0);
  expect(hand).toHaveLength(1);
  const c = hand[0];
  expect(g.log()).toEqual([
    { type: "SpellCast", card: "Twisting Nether" },
    { type: "Destroyed", id: h },
    { type: "Destroyed", id: b },
    { type: "DeathPhase", round: 1 },
    { type: "Triggered", source: h, trigger: "deathrattle" },
    { type: "Drew", player: 0, id: c },
  ]);
});

test("test_04_battlecry_on_play", () => {
  const g = newGame({ decks: [fillers(5), []] });
  const e = g.addToHand("Novice Engineer", 0);
  g.clearLog();

  g.play(e);

  const hand = g.hand(0);
  expect(hand).toHaveLength(1);
  const c = hand[0];
  expect(g.log()).toEqual([
    { type: "Summoned", id: e },
    { type: "Triggered", source: e, trigger: "battlecry" },
    { type: "Drew", player: 0, id: c },
  ]);
  expect(g.zoneOf(e)).toBe("board");
  expect(g.board(0)).toEqual([e]);
});