pokemon-showdown/test/sim/abilities/magnetpull.js

'use strict';

const assert = require('./../../assert');
const common = require('./../../common');

let battle;

describe('Magnet Pull', () => {
	afterEach(() => {
		battle.destroy();
	});

	it('should prevent Steel-type Pokemon from switching out normally', () => {
		battle = common.createBattle([[
			{ species: "Magnezone", ability: 'magnetpull', moves: ['soak', 'charge'] },
		], [
			{ species: "Heatran", ability: 'flashfire', moves: ['curse'] },
			{ species: "Starmie", ability: 'illuminate', moves: ['reflecttype'] },
		]]);

		assert.trapped(() => battle.makeChoices('', 'switch 2'), true);
		battle.makeChoices('auto', 'auto');
		assert.species(battle.p2.active[0], 'Heatran');
		battle.makeChoices('auto', 'switch 2');
		assert.species(battle.p2.active[0], 'Starmie');
		battle.makeChoices('move charge', 'move reflecttype'); // Reflect Type makes Starmie part Steel
		assert.trapped(() => battle.makeChoices('', 'switch 2'), true);
		battle.makeChoices('auto', 'auto');
		assert.species(battle.p2.active[0], 'Starmie');
	});

	it('should not prevent Steel-type Pokemon from switching out using moves', () => {
		battle = common.createBattle([[
			{ species: "Magnezone", ability: 'magnetpull', moves: ['toxic'] },
		], [
			{ species: "Heatran", ability: 'flashfire', moves: ['batonpass'] },
			{ species: "Tentacruel", ability: 'clearbody', moves: ['rapidspin'] },
		]]);
		battle.makeChoices('move toxic', 'move batonpass');
		battle.makeChoices('', 'switch 2');
		assert.species(battle.p2.active[0], 'Tentacruel');
	});

	it('should not prevent Pokemon immune to trapping from switching out', () => {
		battle = common.createBattle([[
			{ species: "Magnezone", ability: 'magnetpull', moves: ['substitute'] },
		], [
			{ species: "Aegislash", ability: 'stancechange', moves: ['swordsdance'] },
			{ species: "Arcanine", ability: 'flashfire', moves: ['roar'] },
		]]);
		battle.makeChoices('move substitute', 'switch 2');
		assert.species(battle.p2.active[0], 'Arcanine');
	});

	describe('[Gen 3]', () => {
		it('should prevent Steel-type allies from switching out normally', () => {
			battle = common.gen(3).createBattle({ gameType: 'doubles' }, [[
				{ species: "Magnezone", ability: 'magnetpull', moves: ['sleeptalk'] },
				{ species: "Heatran", moves: ['sleeptalk'] },
				{ species: "Wynaut", moves: ['sleeptalk'] },
			], [
				{ species: "Gardevoir", moves: ['sleeptalk'] },
				{ species: "Starmie", moves: ['sleeptalk'] },
			]]);
			assert.trapped(() => battle.makeChoices('move sleeptalk, switch 3', 'auto'), true);
		});
	});
});