playwright/test/focus.jest.js

/**
 * Copyright Microsoft Corporation. All rights reserved.
 *
 * 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.
 */

const {FFOX, CHROMIUM, LINUX, WEBKIT, MAC} = testOptions;

describe('Page.focus', function() {
  it('should work', async function({page, server}) {
    await page.setContent(`<div id=d1 tabIndex=0></div>`);
    expect(await page.evaluate(() => document.activeElement.nodeName)).toBe('BODY');
    await page.focus('#d1');
    expect(await page.evaluate(() => document.activeElement.id)).toBe('d1');
  });
  it('should emit focus event', async function({page, server}) {
    await page.setContent(`<div id=d1 tabIndex=0></div>`);
    let focused = false;
    await page.exposeFunction('focusEvent', () => focused = true);
    await page.evaluate(() => d1.addEventListener('focus', focusEvent));
    await page.focus('#d1');
    expect(focused).toBe(true);
  });
  it('should emit blur event', async function({page, server}) {
    await page.setContent(`<div id=d1 tabIndex=0>DIV1</div><div id=d2 tabIndex=0>DIV2</div>`);
    await page.focus('#d1');
    let focused = false;
    let blurred = false;
    await page.exposeFunction('focusEvent', () => focused = true);
    await page.exposeFunction('blurEvent', () => blurred = true);
    await page.evaluate(() => d1.addEventListener('blur', blurEvent));
    await page.evaluate(() => d2.addEventListener('focus', focusEvent));
    await page.focus('#d2');
    expect(focused).toBe(true);
    expect(blurred).toBe(true);
  });
  it('should traverse focus', async function({page}) {
    await page.setContent(`<input id="i1"><input id="i2">`);
    let focused = false;
    await page.exposeFunction('focusEvent', () => focused = true);
    await page.evaluate(() => i2.addEventListener('focus', focusEvent));

    await page.focus('#i1');
    await page.keyboard.type("First");
    await page.keyboard.press("Tab");
    await page.keyboard.type("Last");

    expect(focused).toBe(true);
    expect(await page.$eval('#i1', e => e.value)).toBe('First');
    expect(await page.$eval('#i2', e => e.value)).toBe('Last');
  });
  it('should traverse focus in all directions', async function({page}) {
    await page.setContent(`<input value="1"><input value="2"><input value="3">`);
    await page.keyboard.press('Tab');
    expect(await page.evaluate(() => document.activeElement.value)).toBe('1');
    await page.keyboard.press('Tab');
    expect(await page.evaluate(() => document.activeElement.value)).toBe('2');
    await page.keyboard.press('Tab');
    expect(await page.evaluate(() => document.activeElement.value)).toBe('3');
    await page.keyboard.press('Shift+Tab');
    expect(await page.evaluate(() => document.activeElement.value)).toBe('2');
    await page.keyboard.press('Shift+Tab');
    expect(await page.evaluate(() => document.activeElement.value)).toBe('1');
  });
  // Chromium and WebKit both have settings for tab traversing all links, but 
  // it is only on by default in WebKit.
  it.skip(!MAC || !WEBKIT)('should traverse only form elements', async function({page}) {
    await page.setContent(`
      <input id="input-1">
      <button id="button">buttton</button>
      <a href id="link">link</a>
      <input id="input-2">
    `);
    await page.keyboard.press('Tab');
    expect(await page.evaluate(() => document.activeElement.id)).toBe('input-1');
    await page.keyboard.press('Tab');
    expect(await page.evaluate(() => document.activeElement.id)).toBe('input-2');
    await page.keyboard.press('Shift+Tab');
    expect(await page.evaluate(() => document.activeElement.id)).toBe('input-1');
    await page.keyboard.press('Alt+Tab');
    expect(await page.evaluate(() => document.activeElement.id)).toBe('button');
    await page.keyboard.press('Alt+Tab');
    expect(await page.evaluate(() => document.activeElement.id)).toBe('link');
    await page.keyboard.press('Alt+Tab');
    expect(await page.evaluate(() => document.activeElement.id)).toBe('input-2');
    await page.keyboard.press('Alt+Shift+Tab');
    expect(await page.evaluate(() => document.activeElement.id)).toBe('link');
    await page.keyboard.press('Alt+Shift+Tab');
    expect(await page.evaluate(() => document.activeElement.id)).toBe('button');
    await page.keyboard.press('Alt+Shift+Tab');
    expect(await page.evaluate(() => document.activeElement.id)).toBe('input-1');
  });
});