pokerogue/test/abilities/moody.test.ts

import { BATTLE_STATS, EFFECTIVE_STATS } from "#enums/stat";
import { AbilityId } from "#enums/ability-id";
import { MoveId } from "#enums/move-id";
import { SpeciesId } from "#enums/species-id";
import GameManager from "#test/testUtils/gameManager";
import Phaser from "phaser";
import { afterEach, beforeAll, beforeEach, describe, expect, it, vi } from "vitest";

describe("Abilities - Moody", () => {
  let phaserGame: Phaser.Game;
  let game: GameManager;

  beforeAll(() => {
    phaserGame = new Phaser.Game({
      type: Phaser.HEADLESS,
    });
  });

  afterEach(() => {
    game.phaseInterceptor.restoreOg();
  });

  beforeEach(() => {
    game = new GameManager(phaserGame);

    game.override
      .battleStyle("single")
      .enemySpecies(SpeciesId.RATTATA)
      .enemyAbility(AbilityId.BALL_FETCH)
      .ability(AbilityId.MOODY)
      .enemyMoveset(MoveId.SPLASH)
      .moveset(MoveId.SPLASH);
  });

  it("should increase one stat stage by 2 and decrease a different stat stage by 1", async () => {
    await game.classicMode.startBattle();

    const playerPokemon = game.scene.getPlayerPokemon()!;
    game.move.select(MoveId.SPLASH);
    await game.toNextTurn();

    // Find the increased and decreased stats, make sure they are different.
    const changedStats = EFFECTIVE_STATS.filter(
      s => playerPokemon.getStatStage(s) === 2 || playerPokemon.getStatStage(s) === -1,
    );

    expect(changedStats).toBeTruthy();
    expect(changedStats.length).toBe(2);
    expect(changedStats[0] !== changedStats[1]).toBeTruthy();
  });

  it("should only increase one stat stage by 2 if all stat stages are at -6", async () => {
    await game.classicMode.startBattle();

    const playerPokemon = game.scene.getPlayerPokemon()!;

    // Set all stat stages to -6
    vi.spyOn(playerPokemon.summonData, "statStages", "get").mockReturnValue(new Array(BATTLE_STATS.length).fill(-6));

    game.move.select(MoveId.SPLASH);
    await game.toNextTurn();

    // Should increase one stat stage by 2 (from -6, meaning it will be -4)
    const increasedStat = EFFECTIVE_STATS.filter(s => playerPokemon.getStatStage(s) === -4);

    expect(increasedStat).toBeTruthy();
    expect(increasedStat.length).toBe(1);
  });

  it("should only decrease one stat stage by 1 stage if all stat stages are at 6", async () => {
    await game.classicMode.startBattle();

    const playerPokemon = game.scene.getPlayerPokemon()!;

    // Set all stat stages to 6
    vi.spyOn(playerPokemon.summonData, "statStages", "get").mockReturnValue(new Array(BATTLE_STATS.length).fill(6));

    game.move.select(MoveId.SPLASH);
    await game.toNextTurn();

    // Should decrease one stat stage by 1 (from 6, meaning it will be 5)
    const decreasedStat = EFFECTIVE_STATS.filter(s => playerPokemon.getStatStage(s) === 5);

    expect(decreasedStat).toBeTruthy();
    expect(decreasedStat.length).toBe(1);
  });
});