Add general ability swap test cases

src/test/battle/ability_swap.test.ts

@@ -0,0 +1,67 @@
+import { allAbilities } from "#app/data/ability";
+import { Stat } from "#app/enums/stat";
+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, expect, it } from "vitest";
+
+describe("Moves - Aaa", () => {
+  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
+      .moveset([ Moves.SPLASH ])
+      .ability(Abilities.BALL_FETCH)
+      .battleType("single")
+      .disableCrits()
+      .enemySpecies(Species.MAGIKARP)
+      .enemyAbility(Abilities.BALL_FETCH)
+      .enemyMoveset(Moves.SPLASH);
+  });
+
+  it("should activate post-summon abilities", async () => {
+    await game.classicMode.startBattle([ Species.FEEBAS ]);
+
+    game.move.select(Moves.SPLASH);
+    game.scene.getPlayerPokemon()?.setTempAbility(allAbilities[Abilities.INTIMIDATE]);
+    await game.phaseInterceptor.to("BerryPhase");
+
+    expect(game.scene.getEnemyPokemon()?.getStatStage(Stat.ATK)).toBe(-1);
+  });
+
+  it("should remove primal weather when the setter's ability is removed", async () => {
+    game.override.ability(Abilities.DESOLATE_LAND);
+    await game.classicMode.startBattle([ Species.FEEBAS ]);
+
+    game.move.select(Moves.SPLASH);
+    game.scene.getPlayerPokemon()?.setTempAbility(allAbilities[Abilities.BALL_FETCH]);
+    await game.phaseInterceptor.to("BerryPhase");
+
+    expect(game.scene.arena.weather?.weatherType).toBeUndefined();
+  });
+
+  it("should not activate passive abilities", async () => {
+    game.override.passiveAbility(Abilities.INTREPID_SWORD);
+    await game.classicMode.startBattle([ Species.FEEBAS ]);
+
+    game.move.select(Moves.SPLASH);
+    game.scene.getPlayerPokemon()?.setTempAbility(allAbilities[Abilities.BALL_FETCH]);
+    await game.phaseInterceptor.to("BerryPhase");
+
+    expect(game.scene.getPlayerPokemon()?.getStatStage(Stat.ATK)).toBe(1); // would be 2 if passive activated again
+  });
+});