/* * Wire * Copyright (C) 2020 Wire Swiss GmbH * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program. If not, see http://www.gnu.org/licenses/. * */ import {act, render} from '@testing-library/react'; import {Duration} from './Duration'; describe('Duration', () => { beforeEach(() => { jest.useFakeTimers(); }); afterEach(() => jest.useRealTimers()); it('shows correct timer', async () => { const now = Date.now(); const {getByText, queryByText} = render(); jest.setSystemTime(now); expect(getByText('00:00')).not.toBe(null); act(() => { jest.advanceTimersByTime(1001); }); expect(getByText('00:01')).not.toBe(null); expect(queryByText('00:00')).toBe(null); }); });