pokemon-showdown/test/sim/items/metronome.js

'use strict';

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

let battle;

describe('Metronome (item)', function () {
	afterEach(function () {
		battle.destroy();
	});

	it('should increase the damage of moves that have been used successfully and consecutively', function () {
		battle = common.createBattle([[
			{species: 'wynaut', item: 'metronome', moves: ['psystrike']},
		], [
			{species: 'cleffa', evs: {hp: 252}, ability: 'shellarmor', moves: ['sleeptalk']},
		]]);
		battle.makeChoices();
		const cleffa = battle.p2.active[0];
		const hpAfterOneAttack = cleffa.hp;
		battle.makeChoices();
		const damage = hpAfterOneAttack - cleffa.hp;
		assert.bounded(damage, [115, 137]);
	});

	it('should reset the multiplier after switching moves', function () {
		battle = common.createBattle([[
			{species: 'wynaut', item: 'metronome', moves: ['psystrike', 'sleeptalk']},
		], [
			{species: 'cleffa', evs: {hp: 252}, ability: 'shellarmor', moves: ['sleeptalk']},
		]]);
		battle.makeChoices();
		const cleffa = battle.p2.active[0];
		const hpAfterOneAttack = cleffa.hp;
		battle.makeChoices('move sleeptalk', 'auto');
		battle.makeChoices();
		const damage = hpAfterOneAttack - cleffa.hp;
		assert.bounded(damage, [96, 114]);
	});

	it('should reset the multiplier after hitting Protect', function () {
		battle = common.createBattle([[
			{species: 'wynaut', item: 'metronome', moves: ['psystrike']},
		], [
			{species: 'cleffa', evs: {hp: 252}, ability: 'shellarmor', moves: ['sleeptalk', 'protect']},
		]]);
		battle.makeChoices();
		const cleffa = battle.p2.active[0];
		const hpAfterOneAttack = cleffa.hp;
		battle.makeChoices('auto', 'move protect');
		battle.makeChoices();
		const damage = hpAfterOneAttack - cleffa.hp;
		assert.bounded(damage, [96, 114]);
	});

	it('should instantly start moves that use a charging turn at Metronome 1 boost level, then increase linearly', function () {
		battle = common.createBattle([[
			{species: 'wynaut', item: 'metronome', moves: ['solarbeam']},
		], [
			{species: 'cleffa', evs: {hp: 252}, ability: 'shellarmor', moves: ['sleeptalk', 'protect']},
		]]);
		battle.makeChoices();
		battle.makeChoices();
		const cleffa = battle.p2.active[0];
		const damage = cleffa.maxhp - cleffa.hp;
		assert.bounded(damage, [59, 70]);
	});
});