playwright/tests/page/elementhandle-convenience.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 { test as it, expect } from './pageTest';

it('should have a nice preview', async ({ page, server }) => {
  await page.goto(`${server.PREFIX}/dom.html`);
  const outer = await page.$('#outer');
  const inner = await page.$('#inner');
  const check = await page.$('#check');
  const text = await inner.evaluateHandle(e => e.firstChild);
  await page.evaluate(() => 1);  // Give them a chance to calculate the preview.
  expect(String(outer)).toBe('JSHandle@<div id="outer" name="value">…</div>');
  expect(String(inner)).toBe('JSHandle@<div id="inner">Text,↵more text</div>');
  expect(String(text)).toBe('JSHandle@#text=Text,↵more text');
  expect(String(check)).toBe('JSHandle@<input checked id="check" foo="bar"" type="checkbox"/>');
});

it('getAttribute should work', async ({ page, server }) => {
  await page.goto(`${server.PREFIX}/dom.html`);
  const handle = await page.$('#outer');
  expect(await handle.getAttribute('name')).toBe('value');
  expect(await handle.getAttribute('foo')).toBe(null);
  expect(await page.getAttribute('#outer', 'name')).toBe('value');
  expect(await page.getAttribute('#outer', 'foo')).toBe(null);
});

it('inputValue should work', async ({ page, server }) => {
  await page.goto(`${server.PREFIX}/dom.html`);

  await page.selectOption('#select', 'foo');
  expect(await page.inputValue('#select')).toBe('foo');

  await page.fill('#textarea', 'text value');
  expect(await page.inputValue('#textarea')).toBe('text value');

  await page.fill('#input', 'input value');
  expect(await page.inputValue('#input')).toBe('input value');
  const handle = await page.$('#input');
  expect(await handle.inputValue()).toBe('input value');

  expect(await page.inputValue('#inner').catch(e => e.message)).toContain('Node is not an HTMLInputElement or HTMLTextAreaElement or HTMLSelectElement');
  const handle2 = await page.$('#inner');
  expect(await handle2.inputValue().catch(e => e.message)).toContain('Node is not an HTMLInputElement or HTMLTextAreaElement or HTMLSelectElement');
});

it('innerHTML should work', async ({ page, server }) => {
  await page.goto(`${server.PREFIX}/dom.html`);
  const handle = await page.$('#outer');
  expect(await handle.innerHTML()).toBe('<div id="inner">Text,\nmore text</div>');
  expect(await page.innerHTML('#outer')).toBe('<div id="inner">Text,\nmore text</div>');
});

it('innerText should work', async ({ page, server }) => {
  await page.goto(`${server.PREFIX}/dom.html`);
  const handle = await page.$('#inner');
  expect(await handle.innerText()).toBe('Text, more text');
  expect(await page.innerText('#inner')).toBe('Text, more text');
});

it('innerText should throw', async ({ page, server }) => {
  await page.setContent(`<svg>text</svg>`);
  const error1 = await page.innerText('svg').catch(e => e);
  expect(error1.message).toContain('Not an HTMLElement');
  const handle = await page.$('svg');
  const error2 = await handle.innerText().catch(e => e);
  expect(error2.message).toContain('Not an HTMLElement');
});

it('textContent should work', async ({ page, server }) => {
  await page.goto(`${server.PREFIX}/dom.html`);
  const handle = await page.$('#inner');
  expect(await handle.textContent()).toBe('Text,\nmore text');
  expect(await page.textContent('#inner')).toBe('Text,\nmore text');
});

it('textContent should be atomic', async ({ playwright, page }) => {
  const createDummySelector = () => ({
    query(root, selector) {
      const result = root.querySelector(selector);
      if (result)
        Promise.resolve().then(() => result.textContent = 'modified');
      return result;
    },
    queryAll(root: HTMLElement, selector: string) {
      const result = Array.from(root.querySelectorAll(selector));
      for (const e of result)
        Promise.resolve().then(() => e.textContent = 'modified');
      return result;
    }
  });
  await playwright.selectors.register('textContent', createDummySelector);
  await page.setContent(`<div>Hello</div>`);
  const tc = await page.textContent('textContent=div');
  expect(tc).toBe('Hello');
  expect(await page.evaluate(() => document.querySelector('div').textContent)).toBe('modified');
});

it('innerText should be atomic', async ({ playwright, page }) => {
  const createDummySelector = () => ({
    query(root: HTMLElement, selector: string) {
      const result = root.querySelector(selector);
      if (result)
        Promise.resolve().then(() => result.textContent = 'modified');
      return result;
    },
    queryAll(root: HTMLElement, selector: string) {
      const result = Array.from(root.querySelectorAll(selector));
      for (const e of result)
        Promise.resolve().then(() => e.textContent = 'modified');
      return result;
    }
  });
  await playwright.selectors.register('innerText', createDummySelector);
  await page.setContent(`<div>Hello</div>`);
  const tc = await page.innerText('innerText=div');
  expect(tc).toBe('Hello');
  expect(await page.evaluate(() => document.querySelector('div').innerText)).toBe('modified');
});

it('innerHTML should be atomic', async ({ playwright, page }) => {
  const createDummySelector = () => ({
    query(root, selector) {
      const result = root.querySelector(selector);
      if (result)
        Promise.resolve().then(() => result.textContent = 'modified');
      return result;
    },
    queryAll(root: HTMLElement, selector: string) {
      const result = Array.from(root.querySelectorAll(selector));
      for (const e of result)
        Promise.resolve().then(() => e.textContent = 'modified');
      return result;
    }
  });
  await playwright.selectors.register('innerHTML', createDummySelector);
  await page.setContent(`<div>Hello<span>world</span></div>`);
  const tc = await page.innerHTML('innerHTML=div');
  expect(tc).toBe('Hello<span>world</span>');
  expect(await page.evaluate(() => document.querySelector('div').innerHTML)).toBe('modified');
});

it('getAttribute should be atomic', async ({ playwright, page }) => {
  const createDummySelector = () => ({
    query(root: HTMLElement, selector: string) {
      const result = root.querySelector(selector);
      if (result)
        Promise.resolve().then(() => result.setAttribute('foo', 'modified'));
      return result;
    },
    queryAll(root: HTMLElement, selector: string) {
      const result = Array.from(root.querySelectorAll(selector));
      for (const e of result)
        Promise.resolve().then(() => (e as HTMLElement).setAttribute('foo', 'modified'));
      return result;
    }
  });
  await playwright.selectors.register('getAttribute', createDummySelector);
  await page.setContent(`<div foo=hello></div>`);
  const tc = await page.getAttribute('getAttribute=div', 'foo');
  expect(tc).toBe('hello');
  expect(await page.evaluate(() => document.querySelector('div').getAttribute('foo'))).toBe('modified');
});

it('isVisible and isHidden should work', async ({ page }) => {
  await page.setContent(`<div>Hi</div><span></span>`);

  const div = await page.$('div');
  expect(await div.isVisible()).toBe(true);
  expect(await div.isHidden()).toBe(false);
  expect(await page.isVisible('div')).toBe(true);
  expect(await page.isHidden('div')).toBe(false);

  const span = await page.$('span');
  expect(await span.isVisible()).toBe(false);
  expect(await span.isHidden()).toBe(true);
  expect(await page.isVisible('span')).toBe(false);
  expect(await page.isHidden('span')).toBe(true);

  expect(await page.isVisible('no-such-element')).toBe(false);
  expect(await page.isHidden('no-such-element')).toBe(true);
});

it('element state checks should work for label with zero-sized input', async ({page, server}) => {
  await page.setContent(`
    <label>
      Click me
      <input disabled style="width:0;height:0;padding:0;margin:0;border:0;">
    </label>
  `);
  // Visible checks the label.
  expect(await page.isVisible('text=Click me')).toBe(true);
  expect(await page.isHidden('text=Click me')).toBe(false);

  // Enabled checks the input.
  expect(await page.isEnabled('text=Click me')).toBe(false);
  expect(await page.isDisabled('text=Click me')).toBe(true);
});

it('isVisible should not throw when the DOM element is not connected', async ({page}) => {
  await page.setContent(`<div id="root"></div>`);
  await page.evaluate(() => {
    function insert() {
      document.getElementById('root').innerHTML = '<div id="problem">Problem</div>';
      window.requestAnimationFrame(remove);
    }
    function remove() {
      const node = document.getElementById('problem');
      node?.parentNode?.removeChild(node);
      window.requestAnimationFrame(insert);
    }
    window.requestAnimationFrame(insert);
  });

  for (let i = 0; i < 10; i++)
    await page.isVisible('#problem');
});

it('isEnabled and isDisabled should work', async ({ page }) => {
  await page.setContent(`
    <button disabled>button1</button>
    <button>button2</button>
    <div>div</div>
  `);
  const div = await page.$('div');
  expect(await div.isEnabled()).toBe(true);
  expect(await div.isDisabled()).toBe(false);
  expect(await page.isEnabled('div')).toBe(true);
  expect(await page.isDisabled('div')).toBe(false);
  const button1 = await page.$(':text("button1")');
  expect(await button1.isEnabled()).toBe(false);
  expect(await button1.isDisabled()).toBe(true);
  expect(await page.isEnabled(':text("button1")')).toBe(false);
  expect(await page.isDisabled(':text("button1")')).toBe(true);
  const button2 = await page.$(':text("button2")');
  expect(await button2.isEnabled()).toBe(true);
  expect(await button2.isDisabled()).toBe(false);
  expect(await page.isEnabled(':text("button2")')).toBe(true);
  expect(await page.isDisabled(':text("button2")')).toBe(false);
});

it('isEditable should work', async ({ page }) => {
  await page.setContent(`<input id=input1 disabled><textarea></textarea><input id=input2>`);
  await page.$eval('textarea', t => t.readOnly = true);
  const input1 = await page.$('#input1');
  expect(await input1.isEditable()).toBe(false);
  expect(await page.isEditable('#input1')).toBe(false);
  const input2 = await page.$('#input2');
  expect(await input2.isEditable()).toBe(true);
  expect(await page.isEditable('#input2')).toBe(true);
  const textarea = await page.$('textarea');
  expect(await textarea.isEditable()).toBe(false);
  expect(await page.isEditable('textarea')).toBe(false);
});

it('isChecked should work', async ({page}) => {
  await page.setContent(`<input type='checkbox' checked><div>Not a checkbox</div>`);
  const handle = await page.$('input');
  expect(await handle.isChecked()).toBe(true);
  expect(await page.isChecked('input')).toBe(true);
  await handle.evaluate(input => input.checked = false);
  expect(await handle.isChecked()).toBe(false);
  expect(await page.isChecked('input')).toBe(false);
  const error = await page.isChecked('div').catch(e => e);
  expect(error.message).toContain('Not a checkbox or radio button');
});