playwright/test/browsercontext-viewport-mobile.spec.ts

/**
 * Copyright 2018 Google Inc. All rights reserved.
 * Modifications copyright (c) Microsoft Corporation.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

import { it, expect, describe } from './fixtures';

describe('mobile viewport', (suite, { browserName }) => {
  suite.skip(browserName === 'firefox');
}, () => {
  it('should support mobile emulation', async ({playwright, browser, server}) => {
    const iPhone = playwright.devices['iPhone 6'];
    const context = await browser.newContext({ ...iPhone });
    const page = await context.newPage();
    await page.goto(server.PREFIX + '/mobile.html');
    expect(await page.evaluate(() => window.innerWidth)).toBe(375);
    await page.setViewportSize({width: 400, height: 300});
    expect(await page.evaluate(() => window.innerWidth)).toBe(400);
    await context.close();
  });

  it('should support touch emulation', async ({playwright, browser, server}) => {
    const iPhone = playwright.devices['iPhone 6'];
    const context = await browser.newContext({ ...iPhone });
    const page = await context.newPage();
    await page.goto(server.PREFIX + '/mobile.html');
    expect(await page.evaluate(() => 'ontouchstart' in window)).toBe(true);
    expect(await page.evaluate(dispatchTouch)).toBe('Received touch');
    await context.close();

    function dispatchTouch() {
      let fulfill;
      const promise = new Promise(x => fulfill = x);
      window.ontouchstart = function(e) {
        fulfill('Received touch');
      };
      window.dispatchEvent(new Event('touchstart'));

      fulfill('Did not receive touch');

      return promise;
    }
  });

  it('should be detectable by Modernizr', async ({playwright, browser, server}) => {
    const iPhone = playwright.devices['iPhone 6'];
    const context = await browser.newContext({ ...iPhone });
    const page = await context.newPage();
    await page.goto(server.PREFIX + '/detect-touch.html');
    expect(await page.evaluate(() => document.body.textContent.trim())).toBe('YES');
    await context.close();
  });

  it('should detect touch when applying viewport with touches', async ({browser, server}) => {
    const context = await browser.newContext({ viewport: { width: 800, height: 600 }, hasTouch: true });
    const page = await context.newPage();
    await page.goto(server.EMPTY_PAGE);
    await page.addScriptTag({url: server.PREFIX + '/modernizr.js'});
    expect(await page.evaluate(() => window['Modernizr'].touchevents)).toBe(true);
    await context.close();
  });

  it('should support landscape emulation', async ({playwright, browser, server}) => {
    const iPhone = playwright.devices['iPhone 6'];
    const iPhoneLandscape = playwright.devices['iPhone 6 landscape'];
    const context1 = await browser.newContext({ ...iPhone });
    const page1 = await context1.newPage();
    await page1.goto(server.PREFIX + '/mobile.html');
    expect(await page1.evaluate(() => matchMedia('(orientation: landscape)').matches)).toBe(false);
    const context2 = await browser.newContext({ ...iPhoneLandscape });
    const page2 = await context2.newPage();
    expect(await page2.evaluate(() => matchMedia('(orientation: landscape)').matches)).toBe(true);
    await context1.close();
    await context2.close();
  });

  it('should support window.orientation emulation', async ({browser, server}) => {
    const context = await browser.newContext({ viewport: { width: 300, height: 400 }, isMobile: true });
    const page = await context.newPage();
    await page.goto(server.PREFIX + '/mobile.html');
    expect(await page.evaluate(() => window.orientation)).toBe(0);
    await page.setViewportSize({width: 400, height: 300});
    expect(await page.evaluate(() => window.orientation)).toBe(90);
    await context.close();
  });

  it('should fire orientationchange event', async ({browser, server}) => {
    const context = await browser.newContext({ viewport: { width: 300, height: 400 }, isMobile: true });
    const page = await context.newPage();
    await page.goto(server.PREFIX + '/mobile.html');
    await page.evaluate(() => {
      let counter = 0;
      window.addEventListener('orientationchange', () => console.log(++counter));
    });

    const event1 = page.waitForEvent('console');
    await page.setViewportSize({width: 400, height: 300});
    expect((await event1).text()).toBe('1');

    const event2 = page.waitForEvent('console');
    await page.setViewportSize({width: 300, height: 400});
    expect((await event2).text()).toBe('2');
    await context.close();
  });

  it('default mobile viewports to 980 width', async ({browser, server}) => {
    const context = await browser.newContext({ viewport: {width: 320, height: 480 }, isMobile: true });
    const page = await context.newPage();
    await page.goto(server.PREFIX + '/empty.html');
    expect(await page.evaluate(() => window.innerWidth)).toBe(980);
    await context.close();
  });

  it('respect meta viewport tag', async ({browser, server}) => {
    const context = await browser.newContext({ viewport: {width: 320, height: 480 }, isMobile: true });
    const page = await context.newPage();
    await page.goto(server.PREFIX + '/mobile.html');
    expect(await page.evaluate(() => window.innerWidth)).toBe(320);
    await context.close();
  });

  it('should emulate the hover media feature', async ({playwright, browser}) => {
    const iPhone = playwright.devices['iPhone 6'];
    const mobilepage = await browser.newPage({ ...iPhone });
    expect(await mobilepage.evaluate(() => matchMedia('(hover: hover)').matches)).toBe(false);
    expect(await mobilepage.evaluate(() => matchMedia('(hover: none)').matches)).toBe(true);
    expect(await mobilepage.evaluate(() => matchMedia('(any-hover: hover)').matches)).toBe(false);
    expect(await mobilepage.evaluate(() => matchMedia('(any-hover: none)').matches)).toBe(true);
    expect(await mobilepage.evaluate(() => matchMedia('(pointer: coarse)').matches)).toBe(true);
    expect(await mobilepage.evaluate(() => matchMedia('(pointer: fine)').matches)).toBe(false);
    expect(await mobilepage.evaluate(() => matchMedia('(any-pointer: coarse)').matches)).toBe(true);
    expect(await mobilepage.evaluate(() => matchMedia('(any-pointer: fine)').matches)).toBe(false);
    await mobilepage.close();

    const desktopPage = await browser.newPage();
    expect(await desktopPage.evaluate(() => matchMedia('(hover: none)').matches)).toBe(false);
    expect(await desktopPage.evaluate(() => matchMedia('(hover: hover)').matches)).toBe(true);
    expect(await desktopPage.evaluate(() => matchMedia('(any-hover: none)').matches)).toBe(false);
    expect(await desktopPage.evaluate(() => matchMedia('(any-hover: hover)').matches)).toBe(true);
    expect(await desktopPage.evaluate(() => matchMedia('(pointer: coarse)').matches)).toBe(false);
    expect(await desktopPage.evaluate(() => matchMedia('(pointer: fine)').matches)).toBe(true);
    expect(await desktopPage.evaluate(() => matchMedia('(any-pointer: coarse)').matches)).toBe(false);
    expect(await desktopPage.evaluate(() => matchMedia('(any-pointer: fine)').matches)).toBe(true);
    await desktopPage.close();
  });
});