made a test

src/test/moves/camouflage.test.ts

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+import { Abilities } from "#enums/abilities";
+import { Moves } from "#enums/moves";
+import { Species } from "#enums/species";
+import { TerrainType } from "#app/data/terrain";
+import { Type } from "#app/data/type";
+import GameManager from "#test/utils/gameManager";
+import Phaser from "phaser";
+import { afterEach, beforeAll, beforeEach, describe, expect, it } from "vitest";
+
+describe("Moves - Camouflage", () => {
+  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.CAMOUFLAGE ])
+      .ability(Abilities.BALL_FETCH)
+      .battleType("single")
+      .disableCrits()
+      .enemySpecies(Species.REGIELEKI)
+      .enemyAbility(Abilities.BALL_FETCH)
+      .enemyMoveset(Moves.PSYCHIC_TERRAIN);
+  });
+
+  it("Camouflage should look at terrain first when selecting a type to change into", async () => {
+    await game.classicMode.startBattle([ Species.SHUCKLE ]);
+
+    const playerPokemon = game.scene.getPlayerPokemon()!;
+
+    game.move.select(Moves.CAMOUFLAGE);
+    await game.phaseInterceptor.to("BerryPhase");
+    expect(game.scene.arena.getTerrainType()).toBe(TerrainType.PSYCHIC);
+    const pokemonType = playerPokemon.getTypes()[0];
+    expect(pokemonType).toBe(Type.PSYCHIC);
+    const biomeType = game.scene.arena.getTypeForBiome();
+    expect(pokemonType).not.toBe(biomeType);
+  });
+});