Add Relevant Unit Tests

src/test/abilities/arena_trap.test.ts

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+import { Abilities } from "#enums/abilities";
+import { Moves } from "#enums/moves";
+import { Species } from "#enums/species";
+import GameManager from "#test/utils/gameManager";
+import Phaser from "phaser";
+import { afterEach, beforeAll, beforeEach, describe, it, expect } from "vitest";
+
+describe("Abilities - Arena Trap", () => {
+  let phaserGame: Phaser.Game;
+  let game: GameManager;
+  const TIMEOUT = 20 * 1000;
+
+  beforeAll(() => {
+    phaserGame = new Phaser.Game({
+      type: Phaser.HEADLESS,
+    });
+  });
+
+  afterEach(() => {
+    game.phaseInterceptor.restoreOg();
+  });
+
+  beforeEach(() => {
+    game = new GameManager(phaserGame);
+    game.override
+      .moveset(Moves.SPLASH)
+      .ability(Abilities.ARENA_TRAP)
+      .enemySpecies(Species.RALTS)
+      .enemyAbility(Abilities.BALL_FETCH)
+      .enemyMoveset(Moves.TELEPORT);
+  });
+
+  // TODO: Enable test when Issue #935 is addressed
+  it.todo("should not allow grounded Pokémon to flee", async () => {
+    game.override.battleType("single");
+
+    await game.classicMode.startBattle();
+
+    const enemy = game.scene.getEnemyPokemon();
+
+    game.move.select(Moves.SPLASH);
+
+    await game.toNextTurn();
+
+    expect(enemy).toBe(game.scene.getEnemyPokemon());
+  }, TIMEOUT);
+
+  it("should guarantee double battle with any one LURE", async () => {
+    game.override
+      .startingModifier([
+        { name: "LURE" },
+      ])
+      .startingWave(2);
+
+    await game.classicMode.startBattle();
+
+    expect(game.scene.getEnemyField().length).toBe(2);
+  }, TIMEOUT);
+});

src/test/abilities/illuminate.test.ts

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+import { Stat } from "#app/enums/stat";
+import { Abilities } from "#enums/abilities";
+import { Moves } from "#enums/moves";
+import GameManager from "#test/utils/gameManager";
+import Phaser from "phaser";
+import { afterEach, beforeAll, beforeEach, describe, it, expect } from "vitest";
+
+describe("Abilities - Illuminate", () => {
+  let phaserGame: Phaser.Game;
+  let game: GameManager;
+  const TIMEOUT = 20 * 1000;
+
+  beforeAll(() => {
+    phaserGame = new Phaser.Game({
+      type: Phaser.HEADLESS,
+    });
+  });
+
+  afterEach(() => {
+    game.phaseInterceptor.restoreOg();
+  });
+
+  beforeEach(() => {
+    game = new GameManager(phaserGame);
+    game.override
+      .moveset(Moves.SPLASH)
+      .ability(Abilities.ILLUMINATE)
+      .enemyAbility(Abilities.BALL_FETCH)
+      .enemyMoveset(Moves.SAND_ATTACK);
+  });
+
+  it("should prevent ACC stat stage from being lowered", async () => {
+    game.override.battleType("single");
+
+    await game.classicMode.startBattle();
+
+    const player = game.scene.getPlayerPokemon()!;
+
+    expect(player.getStatStage(Stat.ACC)).toBe(0);
+
+    game.move.select(Moves.SPLASH);
+
+    await game.toNextTurn();
+
+    expect(player.getStatStage(Stat.ACC)).toBe(0);
+  }, TIMEOUT);
+
+  it("should guarantee double battle with any one LURE", async () => {
+    game.override
+      .startingModifier([
+        { name: "LURE" },
+      ])
+      .startingWave(2);
+
+    await game.classicMode.startBattle();
+
+    expect(game.scene.getEnemyField().length).toBe(2);
+  }, TIMEOUT);
+});

src/test/abilities/no_guard.test.ts

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+import { BattlerIndex } from "#app/battle";
+import { MoveEffectPhase } from "#app/phases/move-effect-phase";
+import { MoveEndPhase } from "#app/phases/move-end-phase";
+import { Abilities } from "#enums/abilities";
+import { Moves } from "#enums/moves";
+import { Species } from "#enums/species";
+import GameManager from "#test/utils/gameManager";
+import Phaser from "phaser";
+import { afterEach, beforeAll, beforeEach, describe, it, expect, vi } from "vitest";
+
+describe("Abilities - No Guard", () => {
+  let phaserGame: Phaser.Game;
+  let game: GameManager;
+  const TIMEOUT = 20 * 1000;
+
+  beforeAll(() => {
+    phaserGame = new Phaser.Game({
+      type: Phaser.HEADLESS,
+    });
+  });
+
+  afterEach(() => {
+    game.phaseInterceptor.restoreOg();
+  });
+
+  beforeEach(() => {
+    game = new GameManager(phaserGame);
+    game.override
+      .moveset(Moves.ZAP_CANNON)
+      .ability(Abilities.NO_GUARD)
+      .enemyLevel(200)
+      .enemyAbility(Abilities.BALL_FETCH)
+      .enemyMoveset(Moves.SPLASH);
+  });
+
+  it("should make moves always hit regardless of move accuracy", async () => {
+    game.override.battleType("single");
+
+    await game.classicMode.startBattle([
+      Species.REGIELEKI
+    ]);
+
+    game.move.select(Moves.ZAP_CANNON);
+
+    await game.setTurnOrder([ BattlerIndex.PLAYER, BattlerIndex.ENEMY ]);
+
+    await game.phaseInterceptor.to(MoveEffectPhase, false);
+
+    const moveEffectPhase = game.scene.getCurrentPhase() as MoveEffectPhase;
+    vi.spyOn(moveEffectPhase, "hitCheck");
+
+    await game.phaseInterceptor.to(MoveEndPhase);
+
+    expect(moveEffectPhase.hitCheck).toHaveReturnedWith(true);
+  }, TIMEOUT);
+
+  it("should guarantee double battle with any one LURE", async () => {
+    game.override
+      .startingModifier([
+        { name: "LURE" },
+      ])
+      .startingWave(2);
+
+    await game.classicMode.startBattle();
+
+    expect(game.scene.getEnemyField().length).toBe(2);
+  }, TIMEOUT);
+});