289 lines
10 KiB
JavaScript
289 lines
10 KiB
JavaScript
// Licensed to the Software Freedom Conservancy (SFC) under one
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// or more contributor license agreements. See the NOTICE file
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// distributed with this work for additional information
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// regarding copyright ownership. The SFC licenses this file
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// to you under the Apache License, Version 2.0 (the
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// "License"); you may not use this file except in compliance
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// with the License. You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing,
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// software distributed under the License is distributed on an
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// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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// KIND, either express or implied. See the License for the
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// specific language governing permissions and limitations
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// under the License.
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/**
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* @fileoverview Defines a {@linkplain Driver WebDriver} client for the Chrome
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* web browser. Before using this module, you must download the latest
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* [ChromeDriver release] and ensure it can be found on your system [PATH].
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*
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* There are three primary classes exported by this module:
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*
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* 1. {@linkplain ServiceBuilder}: configures the
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* {@link selenium-webdriver/remote.DriverService remote.DriverService}
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* that manages the [ChromeDriver] child process.
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*
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* 2. {@linkplain Options}: defines configuration options for each new Chrome
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* session, such as which {@linkplain Options#setProxy proxy} to use,
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* what {@linkplain Options#addExtensions extensions} to install, or
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* what {@linkplain Options#addArguments command-line switches} to use when
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* starting the browser.
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*
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* 3. {@linkplain Driver}: the WebDriver client; each new instance will control
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* a unique browser session with a clean user profile (unless otherwise
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* configured through the {@link Options} class).
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*
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* __Headless Chrome__ <a id="headless"></a>
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*
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* To start Chrome in headless mode, simply call
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* {@linkplain Options#headless Options.headless()}.
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*
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* let chrome = require('selenium-webdriver/chrome');
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* let {Builder} = require('selenium-webdriver');
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*
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* let driver = new Builder()
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* .forBrowser('chrome')
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* .setChromeOptions(new chrome.Options().headless())
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* .build();
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*
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* __Customizing the ChromeDriver Server__ <a id="custom-server"></a>
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*
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* By default, every Chrome session will use a single driver service, which is
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* started the first time a {@link Driver} instance is created and terminated
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* when this process exits. The default service will inherit its environment
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* from the current process and direct all output to /dev/null. You may obtain
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* a handle to this default service using
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* {@link #getDefaultService getDefaultService()} and change its configuration
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* with {@link #setDefaultService setDefaultService()}.
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*
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* You may also create a {@link Driver} with its own driver service. This is
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* useful if you need to capture the server's log output for a specific session:
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*
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* let chrome = require('selenium-webdriver/chrome');
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*
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* let service = new chrome.ServiceBuilder()
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* .loggingTo('/my/log/file.txt')
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* .enableVerboseLogging()
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* .build();
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*
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* let options = new chrome.Options();
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* // configure browser options ...
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*
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* let driver = chrome.Driver.createSession(options, service);
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*
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* Users should only instantiate the {@link Driver} class directly when they
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* need a custom driver service configuration (as shown above). For normal
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* operation, users should start Chrome using the
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* {@link selenium-webdriver.Builder}.
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*
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* __Working with Android__ <a id="android"></a>
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*
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* The [ChromeDriver][android] supports running tests on the Chrome browser as
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* well as [WebView apps][webview] starting in Android 4.4 (KitKat). In order to
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* work with Android, you must first start the adb
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*
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* adb start-server
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*
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* By default, adb will start on port 5037. You may change this port, but this
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* will require configuring a [custom server](#custom-server) that will connect
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* to adb on the {@linkplain ServiceBuilder#setAdbPort correct port}:
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*
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* let service = new chrome.ServiceBuilder()
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* .setAdbPort(1234)
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* build();
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* // etc.
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*
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* The ChromeDriver may be configured to launch Chrome on Android using
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* {@link Options#androidChrome()}:
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*
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* let driver = new Builder()
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* .forBrowser('chrome')
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* .setChromeOptions(new chrome.Options().androidChrome())
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* .build();
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*
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* Alternatively, you can configure the ChromeDriver to launch an app with a
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* Chrome-WebView by setting the {@linkplain Options#androidActivity
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* androidActivity} option:
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*
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* let driver = new Builder()
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* .forBrowser('chrome')
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* .setChromeOptions(new chrome.Options()
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* .androidPackage('com.example')
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* .androidActivity('com.example.Activity'))
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* .build();
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*
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* [Refer to the ChromeDriver site] for more information on using the
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* [ChromeDriver with Android][android].
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*
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* [ChromeDriver]: https://chromedriver.chromium.org/
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* [ChromeDriver release]: http://chromedriver.storage.googleapis.com/index.html
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* [PATH]: http://en.wikipedia.org/wiki/PATH_%28variable%29
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* [android]: https://chromedriver.chromium.org/getting-started/getting-started---android
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* [webview]: https://developer.chrome.com/multidevice/webview/overview
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*/
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'use strict'
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const io = require('./io')
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const { Browser } = require('./lib/capabilities')
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const chromium = require('./chromium')
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const { driverLocation } = require('./common/seleniumManager')
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/**
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* Name of the ChromeDriver executable.
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* @type {string}
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* @const
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*/
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const CHROMEDRIVER_EXE =
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process.platform === 'win32' ? 'chromedriver.exe' : 'chromedriver'
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/** @type {remote.DriverService} */
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/**
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* Creates {@link selenium-webdriver/remote.DriverService} instances that manage
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* a [ChromeDriver](https://chromedriver.chromium.org/)
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* server in a child process.
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*/
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class ServiceBuilder extends chromium.ServiceBuilder {
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/**
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* @param {string=} opt_exe Path to the server executable to use. If omitted,
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* the builder will attempt to locate the chromedriver on the current
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* PATH. If the chromedriver is not available in path, selenium-manager will
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* download the chromedriver
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* @throws {Error} If provided executable does not exist, or the chromedriver
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* cannot be found on the PATH.
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*/
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constructor(opt_exe) {
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let exe = opt_exe || locateSynchronously()
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if (!exe) {
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console.log(
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` The ChromeDriver could not be found on the current PATH, trying Selenium Manager`
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)
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try {
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exe = driverLocation(Browser.CHROME)
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} catch (err) {
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console.log(`Unable to obtain driver using Selenium Manager: ${err}`)
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}
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}
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if (!exe) {
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throw Error(
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`The ChromeDriver could not be found on the current PATH.
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Please download the latest version of the ChromeDriver
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from http://chromedriver.storage.googleapis.com/index.html
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and ensure it can be found on your PATH.`
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)
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}
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super(exe)
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}
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}
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/**
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* Class for managing ChromeDriver specific options.
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*/
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class Options extends chromium.Options {
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/**
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* Sets the path to the Chrome binary to use. On Mac OS X, this path should
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* reference the actual Chrome executable, not just the application binary
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* (e.g. "/Applications/Google Chrome.app/Contents/MacOS/Google Chrome").
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*
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* The binary path be absolute or relative to the chromedriver server
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* executable, but it must exist on the machine that will launch Chrome.
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*
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* @param {string} path The path to the Chrome binary to use.
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* @return {!Options} A self reference.
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*/
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setChromeBinaryPath(path) {
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return this.setBinaryPath(path)
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}
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/**
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* Configures the ChromeDriver to launch Chrome on Android via adb. This
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* function is shorthand for
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* {@link #androidPackage options.androidPackage('com.android.chrome')}.
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* @return {!Options} A self reference.
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*/
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androidChrome() {
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return this.androidPackage('com.android.chrome')
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}
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/**
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* Sets the path to Chrome's log file. This path should exist on the machine
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* that will launch Chrome.
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* @param {string} path Path to the log file to use.
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* @return {!Options} A self reference.
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*/
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setChromeLogFile(path) {
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return this.setBrowserLogFile(path)
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}
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/**
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* Sets the directory to store Chrome minidumps in. This option is only
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* supported when ChromeDriver is running on Linux.
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* @param {string} path The directory path.
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* @return {!Options} A self reference.
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*/
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setChromeMinidumpPath(path) {
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return this.setBrowserMinidumpPath(path)
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}
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}
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/**
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* Creates a new WebDriver client for Chrome.
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*/
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class Driver extends chromium.Driver {
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/**
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* Creates a new session with the ChromeDriver.
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*
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* @param {(Capabilities|Options)=} opt_config The configuration options.
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* @param {(remote.DriverService|http.Executor)=} opt_serviceExecutor Either
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* a DriverService to use for the remote end, or a preconfigured executor
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* for an externally managed endpoint. If neither is provided, the
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* {@linkplain ##getDefaultService default service} will be used by
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* default.
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* @return {!Driver} A new driver instance.
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*/
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static createSession(opt_config, opt_serviceExecutor) {
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let caps = opt_config || new Options()
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return /** @type {!Driver} */ (
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super.createSession(caps, opt_serviceExecutor)
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)
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}
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/**
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* returns new instance chrome driver service
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* @returns {remote.DriverService}
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*/
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static getDefaultService() {
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return new ServiceBuilder().build()
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}
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}
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/**
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* _Synchronously_ attempts to locate the chromedriver executable on the current
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* system.
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*
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* @return {?string} the located executable, or `null`.
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*/
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function locateSynchronously() {
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return io.findInPath(CHROMEDRIVER_EXE, true)
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}
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Options.prototype.CAPABILITY_KEY = 'goog:chromeOptions'
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Options.prototype.BROWSER_NAME_VALUE = Browser.CHROME
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Driver.prototype.VENDOR_COMMAND_PREFIX = 'goog'
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// PUBLIC API
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module.exports = {
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Driver: Driver,
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Options,
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ServiceBuilder,
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locateSynchronously,
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}
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