path: root/remote/test/puppeteer/test/src/launcher.spec.ts

/**
 * Copyright 2017 Google Inc. 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.
 */
import fs from 'fs';
import {mkdtemp, readFile, writeFile} from 'fs/promises';
import os from 'os';
import path from 'path';
import {TLSSocket} from 'tls';

import {Protocol} from 'devtools-protocol';
import expect from 'expect';
import {TimeoutError} from 'puppeteer';
import {Page} from 'puppeteer-core/internal/api/Page.js';
import {rmSync} from 'puppeteer-core/internal/node/util/fs.js';
import sinon from 'sinon';

import {getTestState, itOnlyRegularInstall} from './mocha-utils.js';
import {dumpFrames, waitEvent} from './utils.js';

const TMP_FOLDER = path.join(os.tmpdir(), 'pptr_tmp_folder-');
const FIREFOX_TIMEOUT = 30 * 1000;

describe('Launcher specs', function () {
  if (getTestState().isFirefox) {
    this.timeout(FIREFOX_TIMEOUT);
  }

  describe('Puppeteer', function () {
    describe('Browser.disconnect', function () {
      it('should reject navigation when browser closes', async () => {
        const {server, puppeteer, defaultBrowserOptions} = getTestState();
        server.setRoute('/one-style.css', () => {});
        const browser = await puppeteer.launch(defaultBrowserOptions);
        const remote = await puppeteer.connect({
          browserWSEndpoint: browser.wsEndpoint(),
        });
        const page = await remote.newPage();
        const navigationPromise = page
          .goto(server.PREFIX + '/one-style.html', {timeout: 60000})
          .catch(error_ => {
            return error_;
          });
        await server.waitForRequest('/one-style.css');
        remote.disconnect();
        const error = await navigationPromise;
        expect(
          [
            'Navigation failed because browser has disconnected!',
            'Protocol error (Page.navigate): Target closed.',
          ].includes(error.message)
        ).toBeTruthy();
        await browser.close();
      });
      it('should reject waitForSelector when browser closes', async () => {
        const {server, puppeteer, defaultBrowserOptions} = getTestState();

        server.setRoute('/empty.html', () => {});
        const browser = await puppeteer.launch(defaultBrowserOptions);
        const remote = await puppeteer.connect({
          browserWSEndpoint: browser.wsEndpoint(),
        });
        const page = await remote.newPage();
        const watchdog = page
          .waitForSelector('div', {timeout: 60000})
          .catch(error_ => {
            return error_;
          });
        remote.disconnect();
        const error = await watchdog;
        expect(error.message).toContain('Protocol error');
        await browser.close();
      });
    });
    describe('Browser.close', function () {
      it('should terminate network waiters', async () => {
        const {server, puppeteer, defaultBrowserOptions} = getTestState();

        const browser = await puppeteer.launch(defaultBrowserOptions);
        const remote = await puppeteer.connect({
          browserWSEndpoint: browser.wsEndpoint(),
        });
        const newPage = await remote.newPage();
        const results = await Promise.all([
          newPage.waitForRequest(server.EMPTY_PAGE).catch(error => {
            return error;
          }),
          newPage.waitForResponse(server.EMPTY_PAGE).catch(error => {
            return error;
          }),
          browser.close(),
        ]);
        for (let i = 0; i < 2; i++) {
          const message = results[i].message;
          expect(message).toContain('Target closed');
          expect(message).not.toContain('Timeout');
        }
        await browser.close();
      });
    });
    describe('Puppeteer.launch', function () {
      it('can launch and close the browser', async () => {
        const {defaultBrowserOptions, puppeteer} = getTestState();
        const browser = await puppeteer.launch(defaultBrowserOptions);
        await browser.close();
      });
      it('should reject all promises when browser is closed', async () => {
        const {defaultBrowserOptions, puppeteer} = getTestState();
        const browser = await puppeteer.launch(defaultBrowserOptions);
        const page = await browser.newPage();
        let error!: Error;
        const neverResolves = page
          .evaluate(() => {
            return new Promise(() => {});
          })
          .catch(error_ => {
            return (error = error_);
          });
        await browser.close();
        await neverResolves;
        expect(error.message).toContain('Protocol error');
      });
      it('should reject if executable path is invalid', async () => {
        const {defaultBrowserOptions, puppeteer} = getTestState();

        let waitError!: Error;
        const options = Object.assign({}, defaultBrowserOptions, {
          executablePath: 'random-invalid-path',
        });
        await puppeteer.launch(options).catch(error => {
          return (waitError = error);
        });
        expect(waitError.message).toContain('Failed to launch');
      });
      it('userDataDir option', async () => {
        const {defaultBrowserOptions, puppeteer} = getTestState();

        const userDataDir = await mkdtemp(TMP_FOLDER);
        const options = Object.assign({userDataDir}, defaultBrowserOptions);
        const browser = await puppeteer.launch(options);
        // Open a page to make sure its functional.
        await browser.newPage();
        expect(fs.readdirSync(userDataDir).length).toBeGreaterThan(0);
        await browser.close();
        expect(fs.readdirSync(userDataDir).length).toBeGreaterThan(0);
        // This might throw. See https://github.com/puppeteer/puppeteer/issues/2778
        try {
          rmSync(userDataDir);
        } catch {}
      });
      it('tmp profile should be cleaned up', async () => {
        const {defaultBrowserOptions, puppeteer} = getTestState();

        // Set a custom test tmp dir so that we can validate that
        // the profile dir is created and then cleaned up.
        const testTmpDir = await fs.promises.mkdtemp(
          path.join(os.tmpdir(), 'puppeteer_test_chrome_profile-')
        );
        const oldTmpDir = puppeteer.configuration.temporaryDirectory;
        puppeteer.configuration.temporaryDirectory = testTmpDir;

        // Path should be empty before starting the browser.
        expect(fs.readdirSync(testTmpDir)).toHaveLength(0);
        const browser = await puppeteer.launch(defaultBrowserOptions);

        // One profile folder should have been created at this moment.
        const profiles = fs.readdirSync(testTmpDir);
        expect(profiles).toHaveLength(1);
        expect(profiles[0]?.startsWith('puppeteer_dev_chrome_profile-')).toBe(
          true
        );

        // Open a page to make sure its functional.
        await browser.newPage();
        await browser.close();
        // Profile should be deleted after closing the browser
        expect(fs.readdirSync(testTmpDir)).toHaveLength(0);

        // Restore env var
        puppeteer.configuration.temporaryDirectory = oldTmpDir;
      });
      it('userDataDir option restores preferences', async () => {
        const {defaultBrowserOptions, puppeteer} = getTestState();

        const userDataDir = await mkdtemp(TMP_FOLDER);

        const prefsJSPath = path.join(userDataDir, 'prefs.js');
        const prefsJSContent = 'user_pref("browser.warnOnQuit", true)';
        await writeFile(prefsJSPath, prefsJSContent);

        const options = Object.assign({userDataDir}, defaultBrowserOptions);
        const browser = await puppeteer.launch(options);
        // Open a page to make sure its functional.
        await browser.newPage();
        expect(fs.readdirSync(userDataDir).length).toBeGreaterThan(0);
        await browser.close();
        expect(fs.readdirSync(userDataDir).length).toBeGreaterThan(0);

        expect(await readFile(prefsJSPath, 'utf8')).toBe(prefsJSContent);

        // This might throw. See https://github.com/puppeteer/puppeteer/issues/2778
        try {
          rmSync(userDataDir);
        } catch {}
      });
      it('userDataDir argument', async () => {
        const {isChrome, puppeteer, defaultBrowserOptions} = getTestState();

        const userDataDir = await mkdtemp(TMP_FOLDER);
        const options = Object.assign({}, defaultBrowserOptions);
        if (isChrome) {
          options.args = [
            ...(defaultBrowserOptions.args || []),
            `--user-data-dir=${userDataDir}`,
          ];
        } else {
          options.args = [
            ...(defaultBrowserOptions.args || []),
            '-profile',
            userDataDir,
          ];
        }
        const browser = await puppeteer.launch(options);
        expect(fs.readdirSync(userDataDir).length).toBeGreaterThan(0);
        await browser.close();
        expect(fs.readdirSync(userDataDir).length).toBeGreaterThan(0);
        // This might throw. See https://github.com/puppeteer/puppeteer/issues/2778
        try {
          rmSync(userDataDir);
        } catch {}
      });
      it('userDataDir argument with non-existent dir', async () => {
        const {isChrome, puppeteer, defaultBrowserOptions} = getTestState();

        const userDataDir = await mkdtemp(TMP_FOLDER);
        rmSync(userDataDir);
        const options = Object.assign({}, defaultBrowserOptions);
        if (isChrome) {
          options.args = [
            ...(defaultBrowserOptions.args || []),
            `--user-data-dir=${userDataDir}`,
          ];
        } else {
          options.args = [
            ...(defaultBrowserOptions.args || []),
            '-profile',
            userDataDir,
          ];
        }
        const browser = await puppeteer.launch(options);
        expect(fs.readdirSync(userDataDir).length).toBeGreaterThan(0);
        await browser.close();
        expect(fs.readdirSync(userDataDir).length).toBeGreaterThan(0);
        // This might throw. See https://github.com/puppeteer/puppeteer/issues/2778
        try {
          rmSync(userDataDir);
        } catch {}
      });
      it('userDataDir option should restore state', async () => {
        const {server, puppeteer, defaultBrowserOptions} = getTestState();

        const userDataDir = await mkdtemp(TMP_FOLDER);
        const options = Object.assign({userDataDir}, defaultBrowserOptions);
        const browser = await puppeteer.launch(options);
        const page = await browser.newPage();
        await page.goto(server.EMPTY_PAGE);
        await page.evaluate(() => {
          return (localStorage['hey'] = 'hello');
        });
        await browser.close();

        const browser2 = await puppeteer.launch(options);
        const page2 = await browser2.newPage();
        await page2.goto(server.EMPTY_PAGE);
        expect(
          await page2.evaluate(() => {
            return localStorage['hey'];
          })
        ).toBe('hello');
        await browser2.close();
        // This might throw. See https://github.com/puppeteer/puppeteer/issues/2778
        try {
          rmSync(userDataDir);
        } catch {}
      });
      it('userDataDir option should restore cookies', async () => {
        const {server, puppeteer, defaultBrowserOptions} = getTestState();

        const userDataDir = await mkdtemp(TMP_FOLDER);
        const options = Object.assign({userDataDir}, defaultBrowserOptions);
        const browser = await puppeteer.launch(options);
        const page = await browser.newPage();
        await page.goto(server.EMPTY_PAGE);
        await page.evaluate(() => {
          return (document.cookie =
            'doSomethingOnlyOnce=true; expires=Fri, 31 Dec 9999 23:59:59 GMT');
        });
        await browser.close();

        const browser2 = await puppeteer.launch(options);
        const page2 = await browser2.newPage();
        await page2.goto(server.EMPTY_PAGE);
        expect(
          await page2.evaluate(() => {
            return document.cookie;
          })
        ).toBe('doSomethingOnlyOnce=true');
        await browser2.close();
        // This might throw. See https://github.com/puppeteer/puppeteer/issues/2778
        try {
          rmSync(userDataDir);
        } catch {}
      });
      it('should return the default arguments', async () => {
        const {isChrome, isFirefox, puppeteer} = getTestState();

        if (isChrome) {
          expect(puppeteer.defaultArgs()).toContain('--no-first-run');
          expect(puppeteer.defaultArgs()).toContain('--headless');
          expect(puppeteer.defaultArgs({headless: false})).not.toContain(
            '--headless'
          );
          expect(puppeteer.defaultArgs({userDataDir: 'foo'})).toContain(
            `--user-data-dir=${path.resolve('foo')}`
          );
        } else if (isFirefox) {
          expect(puppeteer.defaultArgs()).toContain('--headless');
          expect(puppeteer.defaultArgs()).toContain('--no-remote');
          if (os.platform() === 'darwin') {
            expect(puppeteer.defaultArgs()).toContain('--foreground');
          } else {
            expect(puppeteer.defaultArgs()).not.toContain('--foreground');
          }
          expect(puppeteer.defaultArgs({headless: false})).not.toContain(
            '--headless'
          );
          expect(puppeteer.defaultArgs({userDataDir: 'foo'})).toContain(
            '--profile'
          );
          expect(puppeteer.defaultArgs({userDataDir: 'foo'})).toContain('foo');
        } else {
          expect(puppeteer.defaultArgs()).toContain('-headless');
          expect(puppeteer.defaultArgs({headless: false})).not.toContain(
            '-headless'
          );
          expect(puppeteer.defaultArgs({userDataDir: 'foo'})).toContain(
            '-profile'
          );
          expect(puppeteer.defaultArgs({userDataDir: 'foo'})).toContain(
            path.resolve('foo')
          );
        }
      });
      it('should report the correct product', async () => {
        const {isChrome, isFirefox, puppeteer} = getTestState();
        if (isChrome) {
          expect(puppeteer.product).toBe('chrome');
        } else if (isFirefox) {
          expect(puppeteer.product).toBe('firefox');
        }
      });
      it('should work with no default arguments', async () => {
        const {defaultBrowserOptions, puppeteer} = getTestState();
        const options = Object.assign({}, defaultBrowserOptions);
        options.ignoreDefaultArgs = true;
        const browser = await puppeteer.launch(options);
        try {
          const page = await browser.newPage();
          expect(await page.evaluate('11 * 11')).toBe(121);
          await page.close();
        } finally {
          await browser.close();
        }
      });
      it('should filter out ignored default arguments in Chrome', async () => {
        const {defaultBrowserOptions, puppeteer} = getTestState();
        // Make sure we launch with `--enable-automation` by default.
        const defaultArgs = puppeteer.defaultArgs();
        const browser = await puppeteer.launch(
          Object.assign({}, defaultBrowserOptions, {
            // Ignore first and third default argument.
            ignoreDefaultArgs: [defaultArgs[0]!, defaultArgs[2]],
          })
        );
        const spawnargs = browser.process()!.spawnargs;
        if (!spawnargs) {
          throw new Error('spawnargs not present');
        }
        expect(spawnargs.indexOf(defaultArgs[0]!)).toBe(-1);
        expect(spawnargs.indexOf(defaultArgs[1]!)).not.toBe(-1);
        expect(spawnargs.indexOf(defaultArgs[2]!)).toBe(-1);
        await browser.close();
      });
      it('should filter out ignored default argument in Firefox', async () => {
        const {defaultBrowserOptions, puppeteer} = getTestState();

        const defaultArgs = puppeteer.defaultArgs();
        const browser = await puppeteer.launch(
          Object.assign({}, defaultBrowserOptions, {
            // Only the first argument is fixed, others are optional.
            ignoreDefaultArgs: [defaultArgs[0]!],
          })
        );
        const spawnargs = browser.process()!.spawnargs;
        if (!spawnargs) {
          throw new Error('spawnargs not present');
        }
        expect(spawnargs.indexOf(defaultArgs[0]!)).toBe(-1);
        expect(spawnargs.indexOf(defaultArgs[1]!)).not.toBe(-1);
        await browser.close();
      });
      it('should have default URL when launching browser', async function () {
        const {defaultBrowserOptions, puppeteer} = getTestState();
        const browser = await puppeteer.launch(defaultBrowserOptions);
        const pages = (await browser.pages()).map(page => {
          return page.url();
        });
        expect(pages).toEqual(['about:blank']);
        await browser.close();
      });
      it('should have custom URL when launching browser', async () => {
        const {server, puppeteer, defaultBrowserOptions} = getTestState();

        const options = Object.assign({}, defaultBrowserOptions);
        options.args = [server.EMPTY_PAGE].concat(options.args || []);
        const browser = await puppeteer.launch(options);
        const pages = await browser.pages();
        expect(pages).toHaveLength(1);
        const page = pages[0]!;
        if (page.url() !== server.EMPTY_PAGE) {
          await page.waitForNavigation();
        }
        expect(page.url()).toBe(server.EMPTY_PAGE);
        await browser.close();
      });
      it('should pass the timeout parameter to browser.waitForTarget', async () => {
        const {puppeteer, defaultBrowserOptions} = getTestState();
        const options = Object.assign({}, defaultBrowserOptions, {
          timeout: 1,
        });
        let error!: Error;
        await puppeteer.launch(options).catch(error_ => {
          return (error = error_);
        });
        expect(error).toBeInstanceOf(TimeoutError);
      });
      it('should work with timeout = 0', async () => {
        const {puppeteer, defaultBrowserOptions} = getTestState();
        const options = Object.assign({}, defaultBrowserOptions, {
          timeout: 0,
        });
        const browser = await puppeteer.launch(options);
        await browser.close();
      });
      it('should set the default viewport', async () => {
        const {puppeteer, defaultBrowserOptions} = getTestState();
        const options = Object.assign({}, defaultBrowserOptions, {
          defaultViewport: {
            width: 456,
            height: 789,
          },
        });
        const browser = await puppeteer.launch(options);
        const page = await browser.newPage();
        expect(await page.evaluate('window.innerWidth')).toBe(456);
        expect(await page.evaluate('window.innerHeight')).toBe(789);
        await browser.close();
      });
      it('should disable the default viewport', async () => {
        const {puppeteer, defaultBrowserOptions} = getTestState();
        const options = Object.assign({}, defaultBrowserOptions, {
          defaultViewport: null,
        });
        const browser = await puppeteer.launch(options);
        const page = await browser.newPage();
        expect(page.viewport()).toBe(null);
        await browser.close();
      });
      it('should take fullPage screenshots when defaultViewport is null', async () => {
        const {server, puppeteer, defaultBrowserOptions} = getTestState();

        const options = Object.assign({}, defaultBrowserOptions, {
          defaultViewport: null,
        });
        const browser = await puppeteer.launch(options);
        const page = await browser.newPage();
        await page.goto(server.PREFIX + '/grid.html');
        const screenshot = await page.screenshot({
          fullPage: true,
        });
        expect(screenshot).toBeInstanceOf(Buffer);
        await browser.close();
      });
      it('should set the debugging port', async () => {
        const {puppeteer, defaultBrowserOptions} = getTestState();

        const options = Object.assign({}, defaultBrowserOptions, {
          defaultViewport: null,
          debuggingPort: 9999,
        });
        const browser = await puppeteer.launch(options);
        const url = new URL(browser.wsEndpoint());
        await browser.close();
        expect(url.port).toBe('9999');
      });
      it('should not allow setting debuggingPort and pipe', async () => {
        const {puppeteer, defaultBrowserOptions} = getTestState();

        const options = Object.assign({}, defaultBrowserOptions, {
          defaultViewport: null,
          debuggingPort: 9999,
          pipe: true,
        });

        let error!: Error;
        await puppeteer.launch(options).catch(error_ => {
          return (error = error_);
        });
        expect(error.message).toContain('either pipe or debugging port');
      });
      it('should launch Chrome properly with --no-startup-window and waitForInitialPage=false', async () => {
        const {defaultBrowserOptions, puppeteer} = getTestState();
        const options = {
          waitForInitialPage: false,
          // This is needed to prevent Puppeteer from adding an initial blank page.
          // See also https://github.com/puppeteer/puppeteer/blob/ad6b736039436fcc5c0a262e5b575aa041427be3/src/node/Launcher.ts#L200
          ignoreDefaultArgs: true,
          ...defaultBrowserOptions,
          args: ['--no-startup-window'],
        };
        const browser = await puppeteer.launch(options);
        const pages = await browser.pages();
        expect(pages).toHaveLength(0);
        await browser.close();
      });
    });

    describe('Puppeteer.launch', function () {
      itOnlyRegularInstall('should be able to launch Chrome', async () => {
        const {puppeteer} = getTestState();
        const browser = await puppeteer.launch({product: 'chrome'});
        const userAgent = await browser.userAgent();
        await browser.close();
        expect(userAgent).toContain('Chrome');
      });

      it('should be able to launch Firefox', async function () {
        this.timeout(FIREFOX_TIMEOUT);
        const {puppeteer} = getTestState();
        const browser = await puppeteer.launch({product: 'firefox'});
        const userAgent = await browser.userAgent();
        await browser.close();
        expect(userAgent).toContain('Firefox');
      });
    });

    describe('Puppeteer.connect', function () {
      it('should be able to connect multiple times to the same browser', async () => {
        const {puppeteer, defaultBrowserOptions} = getTestState();

        const originalBrowser = await puppeteer.launch(defaultBrowserOptions);
        const otherBrowser = await puppeteer.connect({
          browserWSEndpoint: originalBrowser.wsEndpoint(),
        });
        const page = await otherBrowser.newPage();
        expect(
          await page.evaluate(() => {
            return 7 * 8;
          })
        ).toBe(56);
        otherBrowser.disconnect();

        const secondPage = await originalBrowser.newPage();
        expect(
          await secondPage.evaluate(() => {
            return 7 * 6;
          })
        ).toBe(42);
        await originalBrowser.close();
      });
      it('should be able to close remote browser', async () => {
        const {defaultBrowserOptions, puppeteer} = getTestState();

        const originalBrowser = await puppeteer.launch(defaultBrowserOptions);
        const remoteBrowser = await puppeteer.connect({
          browserWSEndpoint: originalBrowser.wsEndpoint(),
        });
        await Promise.all([
          waitEvent(originalBrowser, 'disconnected'),
          remoteBrowser.close(),
        ]);
      });
      it('should be able to connect to a browser with no page targets', async () => {
        const {defaultBrowserOptions, puppeteer} = getTestState();

        const originalBrowser = await puppeteer.launch(defaultBrowserOptions);
        const pages = await originalBrowser.pages();
        await Promise.all(
          pages.map(page => {
            return page.close();
          })
        );
        const remoteBrowser = await puppeteer.connect({
          browserWSEndpoint: originalBrowser.wsEndpoint(),
        });
        await Promise.all([
          waitEvent(originalBrowser, 'disconnected'),
          remoteBrowser.close(),
        ]);
      });
      it('should support ignoreHTTPSErrors option', async () => {
        const {httpsServer, puppeteer, defaultBrowserOptions} = getTestState();

        const originalBrowser = await puppeteer.launch(defaultBrowserOptions);
        const browserWSEndpoint = originalBrowser.wsEndpoint();

        const browser = await puppeteer.connect({
          browserWSEndpoint,
          ignoreHTTPSErrors: true,
        });
        const page = await browser.newPage();
        let error!: Error;
        const [serverRequest, response] = await Promise.all([
          httpsServer.waitForRequest('/empty.html'),
          page.goto(httpsServer.EMPTY_PAGE).catch(error_ => {
            return (error = error_);
          }),
        ]);
        expect(error).toBeUndefined();
        expect(response.ok()).toBe(true);
        expect(response.securityDetails()).toBeTruthy();
        const protocol = (serverRequest.socket as TLSSocket)
          .getProtocol()!
          .replace('v', ' ');
        expect(response.securityDetails().protocol()).toBe(protocol);
        await page.close();
        await browser.close();
      });

      it('should support targetFilter option in puppeteer.launch', async () => {
        const {puppeteer, defaultBrowserOptions} = getTestState();
        const browser = await puppeteer.launch({
          ...defaultBrowserOptions,
          targetFilter: target => {
            return target.type !== 'page';
          },
          waitForInitialPage: false,
        });
        try {
          const targets = browser.targets();
          expect(targets).toHaveLength(1);
          expect(
            targets.find(target => {
              return target.type() === 'page';
            })
          ).toBeUndefined();
        } finally {
          await browser.close();
        }
      });

      // @see https://github.com/puppeteer/puppeteer/issues/4197
      it('should support targetFilter option', async () => {
        const {server, puppeteer, defaultBrowserOptions} = getTestState();

        const originalBrowser = await puppeteer.launch(defaultBrowserOptions);
        const browserWSEndpoint = originalBrowser.wsEndpoint();

        const page1 = await originalBrowser.newPage();
        await page1.goto(server.EMPTY_PAGE);

        const page2 = await originalBrowser.newPage();
        await page2.goto(server.EMPTY_PAGE + '?should-be-ignored');

        const browser = await puppeteer.connect({
          browserWSEndpoint,
          targetFilter: (targetInfo: Protocol.Target.TargetInfo) => {
            return !targetInfo.url?.includes('should-be-ignored');
          },
        });

        const pages = await browser.pages();

        await page2.close();
        await page1.close();
        await browser.disconnect();
        await originalBrowser.close();

        expect(
          pages
            .map((p: Page) => {
              return p.url();
            })
            .sort()
        ).toEqual(['about:blank', server.EMPTY_PAGE]);
      });
      it('should be able to reconnect to a disconnected browser', async () => {
        const {server, puppeteer, defaultBrowserOptions} = getTestState();

        const originalBrowser = await puppeteer.launch(defaultBrowserOptions);
        const browserWSEndpoint = originalBrowser.wsEndpoint();
        const page = await originalBrowser.newPage();
        await page.goto(server.PREFIX + '/frames/nested-frames.html');
        originalBrowser.disconnect();

        const browser = await puppeteer.connect({browserWSEndpoint});
        const pages = await browser.pages();
        const restoredPage = pages.find(page => {
          return page.url() === server.PREFIX + '/frames/nested-frames.html';
        })!;
        expect(dumpFrames(restoredPage.mainFrame())).toEqual([
          'http://localhost:<PORT>/frames/nested-frames.html',
          '    http://localhost:<PORT>/frames/two-frames.html (2frames)',
          '        http://localhost:<PORT>/frames/frame.html (uno)',
          '        http://localhost:<PORT>/frames/frame.html (dos)',
          '    http://localhost:<PORT>/frames/frame.html (aframe)',
        ]);
        expect(
          await restoredPage.evaluate(() => {
            return 7 * 8;
          })
        ).toBe(56);
        await browser.close();
      });
      // @see https://github.com/puppeteer/puppeteer/issues/4197#issuecomment-481793410
      it('should be able to connect to the same page simultaneously', async () => {
        const {puppeteer, defaultBrowserOptions} = getTestState();

        const browserOne = await puppeteer.launch(defaultBrowserOptions);
        const browserTwo = await puppeteer.connect({
          browserWSEndpoint: browserOne.wsEndpoint(),
        });
        const [page1, page2] = await Promise.all([
          new Promise<Page>(x => {
            return browserOne.once('targetcreated', target => {
              return x(target.page());
            });
          }),
          browserTwo.newPage(),
        ]);
        expect(
          await page1.evaluate(() => {
            return 7 * 8;
          })
        ).toBe(56);
        expect(
          await page2.evaluate(() => {
            return 7 * 6;
          })
        ).toBe(42);
        await browserOne.close();
      });
      it('should be able to reconnect', async () => {
        const {puppeteer, server, defaultBrowserOptions} = getTestState();
        const browserOne = await puppeteer.launch(defaultBrowserOptions);
        const browserWSEndpoint = browserOne.wsEndpoint();
        const pageOne = await browserOne.newPage();
        await pageOne.goto(server.EMPTY_PAGE);
        browserOne.disconnect();

        const browserTwo = await puppeteer.connect({
          browserWSEndpoint,
        });
        const pages = await browserTwo.pages();
        const pageTwo = pages.find(page => {
          return page.url() === server.EMPTY_PAGE;
        })!;
        await pageTwo.reload();
        const bodyHandle = await pageTwo.waitForSelector('body', {
          timeout: 10000,
        });
        await bodyHandle!.dispose();
        await browserTwo.close();
      });
    });
    describe('Puppeteer.executablePath', function () {
      itOnlyRegularInstall('should work', async () => {
        const {puppeteer} = getTestState();

        const executablePath = puppeteer.executablePath();
        expect(fs.existsSync(executablePath)).toBe(true);
        expect(fs.realpathSync(executablePath)).toBe(executablePath);
      });
      it('returns executablePath for channel', () => {
        const {puppeteer} = getTestState();

        const executablePath = puppeteer.executablePath('chrome');
        expect(executablePath).toBeTruthy();
      });
      describe('when executable path is configured', () => {
        const sandbox = sinon.createSandbox();

        beforeEach(() => {
          const {puppeteer} = getTestState();
          sandbox
            .stub(puppeteer.configuration, 'executablePath')
            .value('SOME_CUSTOM_EXECUTABLE');
        });

        afterEach(() => {
          sandbox.restore();
        });

        it('its value is used', async () => {
          const {puppeteer} = getTestState();
          try {
            puppeteer.executablePath();
          } catch (error) {
            expect((error as Error).message).toContain(
              'SOME_CUSTOM_EXECUTABLE'
            );
          }
        });
      });
    });
  });

  describe('Browser target events', function () {
    it('should work', async () => {
      const {server, puppeteer, defaultBrowserOptions} = getTestState();

      const browser = await puppeteer.launch(defaultBrowserOptions);
      const events: string[] = [];
      browser.on('targetcreated', () => {
        return events.push('CREATED');
      });
      browser.on('targetchanged', () => {
        return events.push('CHANGED');
      });
      browser.on('targetdestroyed', () => {
        return events.push('DESTROYED');
      });
      const page = await browser.newPage();
      await page.goto(server.EMPTY_PAGE);
      await page.close();
      expect(events).toEqual(['CREATED', 'CHANGED', 'DESTROYED']);
      await browser.close();
    });
  });

  describe('Browser.Events.disconnected', function () {
    it('should be emitted when: browser gets closed, disconnected or underlying websocket gets closed', async () => {
      const {puppeteer, defaultBrowserOptions} = getTestState();
      const originalBrowser = await puppeteer.launch(defaultBrowserOptions);
      const browserWSEndpoint = originalBrowser.wsEndpoint();
      const remoteBrowser1 = await puppeteer.connect({
        browserWSEndpoint,
      });
      const remoteBrowser2 = await puppeteer.connect({
        browserWSEndpoint,
      });

      let disconnectedOriginal = 0;
      let disconnectedRemote1 = 0;
      let disconnectedRemote2 = 0;
      originalBrowser.on('disconnected', () => {
        return ++disconnectedOriginal;
      });
      remoteBrowser1.on('disconnected', () => {
        return ++disconnectedRemote1;
      });
      remoteBrowser2.on('disconnected', () => {
        return ++disconnectedRemote2;
      });

      await Promise.all([
        waitEvent(remoteBrowser2, 'disconnected'),
        remoteBrowser2.disconnect(),
      ]);

      expect(disconnectedOriginal).toBe(0);
      expect(disconnectedRemote1).toBe(0);
      expect(disconnectedRemote2).toBe(1);

      await Promise.all([
        waitEvent(remoteBrowser1, 'disconnected'),
        waitEvent(originalBrowser, 'disconnected'),
        originalBrowser.close(),
      ]);

      expect(disconnectedOriginal).toBe(1);
      expect(disconnectedRemote1).toBe(1);
      expect(disconnectedRemote2).toBe(1);
    });
  });
});