WebDriver

• 1: Getting started
• 1.1: Install a Selenium library
• 1.2: Install browser drivers
• 1.3: Write your first Selenium script
• 1.4: Upgrade to Selenium 4
• 2: Driver Sessions
• 2.1: Browser Options
• 2.2: Command executors
• 2.3: Command Listeners
• 2.4: Browser Service
• 2.5: Remote WebDriver
• 3: Supported Browsers
• 3.1: Chrome specific functionality
• 3.2: Edge specific functionality
• 3.3: Firefox specific functionality
• 3.4: IE specific functionality
• 3.5: Safari specific functionality
• 4: Waits
• 5: Web elements
• 5.1: File Upload
• 5.2: Locator strategies
• 5.3: Finding web elements
• 5.4: Interacting with web elements
• 5.5: Information about web elements
• 6: Browser interactions
• 6.1: Browser navigation
• 6.2: JavaScript alerts, prompts and confirmations
• 6.3: Working with cookies
• 6.4: Working with IFrames and frames
• 6.5: Working with windows and tabs
• 6.6: Virtual Authenticator
• 7: Actions API
• 7.1: Keyboard actions
• 7.2: Mouse actions
• 7.3: Pen actions
• 7.4: Scroll wheel actions
• 8: BiDirectional functionality
• 8.1: BiDirectional API (CDP implementation)
• 8.2: RemoteWebDriver BiDirectional API (CDP implementation)
• 8.3: Chrome DevTools
• 8.4: BiDirectional API (W3C compliant)
• 8.4.1: Browsing Context
• 8.4.2: Log
• 9: Support features
• 9.1: Working With Colors
• 9.2: Working with select list elements
• 9.3: ThreadGuard
• 10: Troubleshooting Assistance
• 10.1: Understanding Common Errors
• 10.2: Logging Selenium commands

1 - Getting started

Selenium supports automation of all the major browsers in the market through the use of WebDriver. WebDriver is an API and protocol that defines a language-neutral interface for controlling the behaviour of web browsers. Each browser is backed by a specific WebDriver implementation, called a driver. The driver is the component responsible for delegating down to the browser, and handles communication to and from Selenium and the browser.

This separation is part of a conscious effort to have browser vendors take responsibility for the implementation for their browsers. Selenium makes use of these third party drivers where possible, but also provides its own drivers maintained by the project for the cases when this is not a reality.

The Selenium framework ties all of these pieces together through a user-facing interface that enables the different browser backends to be used transparently, enabling cross-browser and cross-platform automation.

Selenium setup is quite different from the setup of other commercial tools. Before you can start writing Selenium code, you have to install the language bindings libraries for your language of choice, the browser you want to use, and the driver for that browser.

Follow the links below to get up and going with Selenium WebDriver.

If you wish to start with a low-code/record and playback tool, please check Selenium IDE

Once you get things working, if you want to scale up your tests, check out the Selenium Grid.

1.1 - Install a Selenium library

First you need to install the Selenium bindings for your automation project. The installation process for libraries depends on the language you choose to use. Make sure you check the Selenium downloads page to make sure you are using the latest version.

Requirements by language

• Java
• Python
• CSharp
• Ruby
• JavaScript
• Kotlin

        <dependency>
            <groupId>org.seleniumhq.selenium</groupId>
            <artifactId>selenium-java</artifactId>
            <version>4.8.0</version>
        </dependency>

    testImplementation 'org.seleniumhq.selenium:selenium-java:4.8.0'

pip install selenium

python setup.py install

selenium==4.8.2

Install-Package Selenium.WebDriver

dotnet add package Selenium.WebDriver

      <PackageReference Include="Selenium.WebDriver" Version="4.8.1" />

<configuration>
  <packageSources>
    <add key="nuget.org" value="https://api.nuget.org/v3/index.json" protocolVersion="3" />
    <add key="nuget.org" value="https://www.nuget.org/api/v2/" />   
  </packageSources>
...

gem install selenium-webdriver

gem 'selenium-webdriver', '= 4.8.0'

npm install selenium-webdriver

        "selenium-webdriver": "^4.8.1"

Next Step

Install the browser drivers

1.2 - Install browser drivers

Through WebDriver, Selenium supports all major browsers on the market such as Chrome/Chromium, Firefox, Internet Explorer, Edge, and Safari. Where possible, WebDriver drives the browser using the browser’s built-in support for automation.

Since all the driver implementations except for Internet Explorer are provided by the browser vendors themselves, they are not included in the standard Selenium distribution. This section explains the basic requirements for getting started with the different browsers.

Read about more advanced options for starting a driver in our driver configuration documentation.

Four Ways to Use Drivers

1. Selenium Manager (Beta)

Selenium v4.6

Selenium Manager helps you to get a working environment to run Selenium out of the box. Beta 1 of Selenium Manager will configure the drivers for Chrome, Firefox, and Edge if they are not found on the PATH. No extra configuration is needed. Future releases of Selenium Manager will eventually even download browsers if necessary.

Read more at the blog announcement for Selenium Manager .

2. Driver Management Software

Most machines automatically update the browser, but the driver does not. To make sure you get the correct driver for your browser, there are many third party libraries to assist you.

• Java
• Python
• CSharp
• Ruby
• JavaScript
• Kotlin

import io.github.bonigarcia.wdm.WebDriverManager;

        WebDriverManager.chromedriver().setup();

        WebDriver driver = new ChromeDriver();

from webdriver_manager.chrome import ChromeDriverManager

    service = ChromeService(executable_path=ChromeDriverManager().install())

    driver = webdriver.Chrome(service=service)

using WebDriverManager;
using WebDriverManager.DriverConfigs.Impl;

            new DriverManager().SetUpDriver(new ChromeConfig());

            var driver = new ChromeDriver();

gem 'webdrivers', '~> 5.0'

    require 'webdrivers'

    @driver = Selenium::WebDriver.for :chrome

import io.github.bonigarcia.wdm.WebDriverManager;

        WebDriverManager.chromedriver().setup()
        val driver: WebDriver = ChromeDriver()

3. The PATH Environment Variable

This option first requires manually downloading the driver (See Quick Reference Section for links).

This is a flexible option to change location of drivers without having to update your code, and will work on multiple machines without requiring that each machine put the drivers in the same place.

You can either place the drivers in a directory that is already listed in PATH, or you can place them in a directory and add it to PATH.

• Bash
• Zsh
• Windows

echo $PATH

echo 'export PATH=$PATH:/path/to/driver' >> ~/.bash_profile
source ~/.bash_profile

chromedriver

echo $PATH

echo 'export PATH=$PATH:/path/to/driver' >> ~/.zshenv
source ~/.zshenv

chromedriver

echo %PATH%

setx PATH "%PATH%;C:\WebDriver\bin"

chromedriver.exe

If your PATH is configured correctly above, you will see some output relating to the startup of the driver:

Starting ChromeDriver 95.0.4638.54 (d31a821ec901f68d0d34ccdbaea45b4c86ce543e-refs/branch-heads/4638@{#871}) on port 9515
Only local connections are allowed.
Please see https://chromedriver.chromium.org/security-considerations for suggestions on keeping ChromeDriver safe.
ChromeDriver was started successfully.

You can regain control of your command prompt by pressing Ctrl+C

4. Hard Coded Location

Similar to Option 3 above, you need to manually download the driver (See Quick Reference Section for links). Specifying the location in the code itself has the advantage of not needing to figure out Environment Variables on your system, but has the drawback of making the code much less flexible.

• Java
• Python
• CSharp
• Ruby
• JavaScript
• Kotlin

System.setProperty("webdriver.chrome.driver","/path/to/chromedriver");
ChromeDriver driver = new ChromeDriver();

from selenium.webdriver.chrome.service import Service
from selenium import webdriver

service = Service(executable_path="/path/to/chromedriver")
driver = webdriver.Chrome(service=service)

var driver = new ChromeDriver(@"C:\WebDriver\bin");

service = Selenium::WebDriver::Service.chrome(path: '/path/to/chromedriver')
driver = Selenium::WebDriver.for :chrome, service: service

const {Builder} = require('selenium-webdriver');
const chrome = require('selenium-webdriver/chrome');

const service = new chrome.ServiceBuilder('/path/to/chromedriver');
const driver = new Builder().forBrowser('chrome').setChromeService(service).build();

import org.openqa.selenium.chrome.ChromeDriver

fun main(args: Array<String>) {
    System.setProperty("webdriver.chrome.driver", "/path/to/chromedriver")
    val driver = ChromeDriver()
}

Quick Reference

Note: The Opera driver no longer works with the latest functionality of Selenium and is currently officially unsupported.

Next Step

Create your first Selenium script

1.3 - Write your first Selenium script

Once you have Selenium installed and Drivers installed, you’re ready to write Selenium code.

Eight Basic Components

Everything Selenium does is send the browser commands to do something or send requests for information. Most of what you’ll do with Selenium is a combination of these basic commands:

1. Start the session

For more details on starting a session read our documentation on driver sessions

• Java
• Python
• CSharp
• Ruby
• JavaScript
• Kotlin

        WebDriver driver = new ChromeDriver();

    driver = webdriver.Chrome()

            IWebDriver driver = new ChromeDriver();

    driver = Selenium::WebDriver.for :chrome

      driver = await new Builder().forBrowser('chrome').build();

        driver = ChromeDriver()

2. Take action on browser

In this example we are navigating to a web page.

• Java
• Python
• CSharp
• Ruby
• JavaScript
• Kotlin

        driver.get("https://www.selenium.dev/selenium/web/web-form.html");

    driver.get("https://www.selenium.dev/selenium/web/web-form.html")

            driver.Navigate().GoToUrl("https://www.selenium.dev/selenium/web/web-form.html");

    driver.get('https://www.selenium.dev/selenium/web/web-form.html')

      await driver.get('https://www.selenium.dev/selenium/web/web-form.html');

        driver.get("https://www.selenium.dev/selenium/web/web-form.html")

3. Request browser information

There are a bunch of types of information about the browser you can request, including window handles, browser size / position, cookies, alerts, etc.

• Java
• Python
• CSharp
• Ruby
• JavaScript
• Kotlin

        String title = driver.getTitle();

    title = driver.title

            var title = driver.Title;

    title = driver.title

      let title = await driver.getTitle();

        val title = driver.title

4. Establish Waiting Strategy

Synchronizing the code with the current state of the browser is one of the biggest challenges with Selenium, and doing it well is an advanced topic.

Essentially you want to make sure that the element is on the page before you attempt to locate it and the element is in an interactable state before you attempt to interact with it.

An implicit wait is rarely the best solution, but it’s the easiest to demonstrate here, so we’ll use it as a placeholder.

Read more about Waiting strategies.

• Java
• Python
• CSharp
• Ruby
• JavaScript
• Kotlin

        driver.manage().timeouts().implicitlyWait(Duration.ofMillis(500));

    driver.implicitly_wait(0.5)

            driver.Manage().Timeouts().ImplicitWait = TimeSpan.FromMilliseconds(500);

    driver.manage.timeouts.implicit_wait = 500

      await driver.manage().setTimeouts({implicit: 500});

        driver.manage().timeouts().implicitlyWait(Duration.ofMillis(500))

5. Find an element

The majority of commands in most Selenium sessions are element related, and you can’t interact with one without first finding an element

• Java
• Python
• CSharp
• Ruby
• JavaScript
• Kotlin

        WebElement textBox = driver.findElement(By.name("my-text"));
        WebElement submitButton = driver.findElement(By.cssSelector("button"));

    text_box = driver.find_element(by=By.NAME, value="my-text")
    submit_button = driver.find_element(by=By.CSS_SELECTOR, value="button")

            var textBox = driver.FindElement(By.Name("my-text"));
            var submitButton = driver.FindElement(By.TagName("button"));

    text_box = driver.find_element(name: 'my-text')
    submit_button = driver.find_element(tag_name: 'button')

      let textBox = await driver.findElement(By.name('my-text'));
      let submitButton = await driver.findElement(By.css('button'));

        var textBox = driver.findElement(By.name("my-text"))
        val submitButton = driver.findElement(By.cssSelector("button"))

6. Take action on element

There are only a handful of actions to take on an element, but you will use them frequently.

• Java
• Python
• CSharp
• Ruby
• JavaScript
• Kotlin

        textBox.sendKeys("Selenium");
        submitButton.click();

    text_box.send_keys("Selenium")
    submit_button.click()

            textBox.SendKeys("Selenium");
            submitButton.Click();

    text_box.send_keys('Selenium')
    submit_button.click

      await textBox.sendKeys('Selenium');
      await submitButton.click();

        textBox.sendKeys("Selenium")
        submitButton.click()

7. Request element information

Elements store a lot of information that can be requested.

• Java
• Python
• CSharp
• Ruby
• JavaScript
• Kotlin

        String value = message.getText();

    value = message.text

            var value = message.Text;

    value = message.text

      let value = await message.getText();

        val value = message.getText()

8. End the session

This ends the driver process, which by default closes the browser as well. No more commands can be sent to this driver instance.

• Java
• Python
• CSharp
• Ruby
• JavaScript
• Kotlin

        driver.quit();

    driver.quit()

            driver.Quit();

    driver.quit

    after(async () => await driver.quit());

        driver.quit()

Putting everything together

Let’s combine these 8 things into a complete script with assertions that can be executed by a test runner.

• Java
• Python
• CSharp
• Ruby
• JavaScript
• Kotlin

package dev.selenium.getting_started;

import org.junit.jupiter.api.Test;
import org.openqa.selenium.By;
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.WebElement;
import org.openqa.selenium.chrome.ChromeDriver;

import java.time.Duration;

import static org.junit.jupiter.api.Assertions.assertEquals;

public class FirstScriptTest {

    @Test
    public void eightComponents() {
        WebDriver driver = new ChromeDriver();
        driver.get("https://www.selenium.dev/selenium/web/web-form.html");

        String title = driver.getTitle();
        assertEquals("Web form", title);

        driver.manage().timeouts().implicitlyWait(Duration.ofMillis(500));

        WebElement textBox = driver.findElement(By.name("my-text"));
        WebElement submitButton = driver.findElement(By.cssSelector("button"));

        textBox.sendKeys("Selenium");
        submitButton.click();

        WebElement message = driver.findElement(By.id("message"));
        String value = message.getText();
        assertEquals("Received!", value);

        driver.quit();
    }

}

from selenium import webdriver
from selenium.webdriver.common.by import By


def test_eight_components():
    driver = webdriver.Chrome()

    driver.get("https://www.selenium.dev/selenium/web/web-form.html")

    title = driver.title
    assert title == "Web form"

    driver.implicitly_wait(0.5)

    text_box = driver.find_element(by=By.NAME, value="my-text")
    submit_button = driver.find_element(by=By.CSS_SELECTOR, value="button")

    text_box.send_keys("Selenium")
    submit_button.click()

    message = driver.find_element(by=By.ID, value="message")
    value = message.text
    assert value == "Received!"

    driver.quit()

using System;
using Microsoft.VisualStudio.TestTools.UnitTesting;
using OpenQA.Selenium;
using OpenQA.Selenium.Chrome;

namespace SeleniumDocs.GettingStarted
{
    [TestClass]
    public class FirstScriptTest
    {

        [TestMethod]
        public void ChromeSession()
        {
            IWebDriver driver = new ChromeDriver();

            driver.Navigate().GoToUrl("https://www.selenium.dev/selenium/web/web-form.html");

            var title = driver.Title;
            Assert.AreEqual("Web form", title);

            driver.Manage().Timeouts().ImplicitWait = TimeSpan.FromMilliseconds(500);

            var textBox = driver.FindElement(By.Name("my-text"));
            var submitButton = driver.FindElement(By.TagName("button"));
            
            textBox.SendKeys("Selenium");
            submitButton.Click();
            
            var message = driver.FindElement(By.Id("message"));
            var value = message.Text;
            Assert.AreEqual("Received!", value);
            
            driver.Quit();
        }
    }
}

# frozen_string_literal: true

require 'spec_helper'

RSpec.describe 'First Script' do
  it 'uses eight components' do
    driver = Selenium::WebDriver.for :chrome

    driver.get('https://www.selenium.dev/selenium/web/web-form.html')

    title = driver.title
    expect(title).to eq('Web form')

    driver.manage.timeouts.implicit_wait = 500

    text_box = driver.find_element(name: 'my-text')
    submit_button = driver.find_element(tag_name: 'button')

    text_box.send_keys('Selenium')
    submit_button.click

    message = driver.find_element(id: 'message')
    value = message.text
    expect(value).to eq('Received!')

    driver.quit
  end
end

const {By, Builder, Browser} = require('selenium-webdriver');
const {suite} = require('selenium-webdriver/testing');
const assert = require("assert");

suite(function (env) {
  describe('First script', function () {
    let driver;

    before(async function () {
      driver = await new Builder().forBrowser('chrome').build();
    });

    after(async () => await driver.quit());

    it('First Selenium script', async function () {
      await driver.get('https://www.selenium.dev/selenium/web/web-form.html');

      let title = await driver.getTitle();
      assert.equal("Web form", title);

      await driver.manage().setTimeouts({implicit: 500});

      let textBox = await driver.findElement(By.name('my-text'));
      let submitButton = await driver.findElement(By.css('button'));

      await textBox.sendKeys('Selenium');
      await submitButton.click();

      let message = await driver.findElement(By.id('message'));
      let value = await message.getText();
      assert.equal("Received!", value);
    });
  });
}, { browsers: [Browser.CHROME, Browser.FIREFOX]});

package dev.selenium.getting_started

import io.github.bonigarcia.wdm.WebDriverManager
import org.junit.jupiter.api.*
import org.junit.jupiter.api.Assertions.assertEquals
import org.openqa.selenium.By
import org.openqa.selenium.WebDriver
import org.openqa.selenium.chrome.ChromeDriver
import java.time.Duration

@TestInstance(TestInstance.Lifecycle.PER_CLASS)
class FirstScriptTest {
    private lateinit var driver: WebDriver

    @BeforeAll
    fun setupAll() {
        WebDriverManager.chromedriver().setup()
    }

    @BeforeEach
    fun setup() {
        driver = ChromeDriver()
    }

    @AfterEach
    fun teardown() {
        driver.quit()
    }

    @Test
    fun eightComponents() {
        driver.get("https://www.selenium.dev/selenium/web/web-form.html")

        val title = driver.title
        assertEquals("Web form", title)

        driver.manage().timeouts().implicitlyWait(Duration.ofMillis(500))

        var textBox = driver.findElement(By.name("my-text"))
        val submitButton = driver.findElement(By.cssSelector("button"))

        textBox.sendKeys("Selenium")
        submitButton.click()

        val message = driver.findElement(By.id("message"))
        val value = message.getText()
        assertEquals("Received!", value)
    }

}

Test Runners

If you are using Selenium for testing, you will want to execute your Selenium code using test runner tools.

Many of the code examples in this documentation can be found in our example repositories. There are multiple options in each language, but here is what we are using in our examples:

• Java
• Python
• CSharp
• Ruby
• JavaScript
• Kotlin

// Add instructions

// Add instructions

// Add instructions

// Add instructions

npm install mocha

mocha firstScript.spec.js

// Add instructions

Next Steps

Take what you’ve learned and build out your Selenium code.

As you find more functionality that you need, read up on the rest of our WebDriver documentation.

1.4 - Upgrade to Selenium 4

Upgrading to Selenium 4 should be a painless process if you are using one of the officially supported languages (Ruby, JavaScript, C#, Python, and Java). There might be some cases where a few issues can happen, and this guide will help you to sort them out. We will go through the steps to upgrade your project dependencies and understand the major deprecations and changes the version upgrade brings.

These are the steps we will follow to upgrade to Selenium 4:

• Preparing our test code
• Upgrading dependencies
• Potential errors and deprecation messages

Note: while Selenium 3.x versions were being developed, support for the W3C WebDriver standard was implemented. Both this new protocol and the legacy JSON Wire Protocol were supported. Around version 3.11, Selenium code became compliant with the level W3C 1 specification. The W3C compliant code in the latest version of Selenium 3 will work as expected in Selenium 4.

Preparing our test code

Selenium 4 removes support for the legacy protocol and uses the W3C WebDriver standard by default under the hood. For most things, this implementation will not affect end users. The major exceptions are Capabilities and the Actions class.

Capabilities

If the test capabilities are not structured to be W3C compliant, may cause a session to not be started. Here is the list of W3C WebDriver standard capabilities:

• browserName
• browserVersion (replaces version)
• platformName (replaces platform)
• acceptInsecureCerts
• pageLoadStrategy
• proxy
• timeouts
• unhandledPromptBehavior

An up-to-date list of standard capabilities can be found at W3C WebDriver.

Any capability that is not contained in the list above, needs to include a vendor prefix. This applies to browser specific capabilities as well as cloud vendor specific capabilities. For example, if your cloud vendor uses build and name capabilities for your tests, you need to wrap them in a cloud:options block (check with your cloud vendor for the appropriate prefix).

Before

• Java
• JavaScript
• CSharp
• Ruby
• Python

DesiredCapabilities caps = DesiredCapabilities.firefox();
caps.setCapability("platform", "Windows 10");
caps.setCapability("version", "92");
caps.setCapability("build", myTestBuild);
caps.setCapability("name", myTestName);
WebDriver driver = new RemoteWebDriver(new URL(cloudUrl), caps);

caps = {};
caps['browserName'] = 'Firefox';
caps['platform'] = 'Windows 10';
caps['version'] = '92';
caps['build'] = myTestBuild;
caps['name'] = myTestName;

DesiredCapabilities caps = new DesiredCapabilities();
caps.SetCapability("browserName", "firefox");
caps.SetCapability("platform", "Windows 10");
caps.SetCapability("version", "92");
caps.SetCapability("build", myTestBuild);
caps.SetCapability("name", myTestName);
var driver = new RemoteWebDriver(new Uri(CloudURL), caps);

caps = Selenium::WebDriver::Remote::Capabilities.firefox
caps[:platform] = 'Windows 10'
caps[:version] = '92'
caps[:build] = my_test_build
caps[:name] = my_test_name
driver = Selenium::WebDriver.for :remote, url: cloud_url, desired_capabilities: caps

caps = {}
caps['browserName'] = 'firefox'
caps['platform'] = 'Windows 10'
caps['version'] = '92'
caps['build'] = my_test_build
caps['name'] = my_test_name
driver = webdriver.Remote(cloud_url, desired_capabilities=caps)

After

• Java
• JavaScript
• CSharp
• Ruby
• Python

FirefoxOptions browserOptions = new FirefoxOptions();
browserOptions.setPlatformName("Windows 10");
browserOptions.setBrowserVersion("92");
Map<String, Object> cloudOptions = new HashMap<>();
cloudOptions.put("build", myTestBuild);
cloudOptions.put("name", myTestName);
browserOptions.setCapability("cloud:options", cloudOptions);
WebDriver driver = new RemoteWebDriver(new URL(cloudUrl), browserOptions);

capabilities = {
  browserName: 'firefox',
  browserVersion: '92',
  platformName: 'Windows 10',
  'cloud:options': {
     build: myTestBuild,
     name: myTestName,
  }
}

var browserOptions = new FirefoxOptions();
browserOptions.PlatformName = "Windows 10";
browserOptions.BrowserVersion = "92";
var cloudOptions = new Dictionary<string, object>();
cloudOptions.Add("build", myTestBuild);
cloudOptions.Add("name", myTestName);
browserOptions.AddAdditionalOption("cloud:options", cloudOptions);
var driver = new RemoteWebDriver(new Uri(CloudURL), browserOptions);

options = Selenium::WebDriver::Options.firefox
options.browser_version = 'latest'
options.platform_name = 'Windows 10'
cloud_options = {}
cloud_options[:build] = my_test_build
cloud_options[:name] = my_test_name
options.add_option('cloud:options', cloud_options)
driver = Selenium::WebDriver.for :remote, url: cloud_url, capabilities: options

from selenium.webdriver.firefox.options import Options as FirefoxOptions
options = FirefoxOptions()
options.browser_version = '92'
options.platform_name = 'Windows 10'
cloud_options = {}
cloud_options['build'] = my_test_build
cloud_options['name'] = my_test_name
options.set_capability('cloud:options', cloud_options)
driver = webdriver.Remote(cloud_url, options=options)

Find element(s) utility methods in Java

The utility methods to find elements in the Java bindings (FindsBy interfaces) have been removed as they were meant for internal use only. The following code samples explain this better.

Finding a single element with findElement*

driver.findElementByClassName("className");
driver.findElementByCssSelector(".className");
driver.findElementById("elementId");
driver.findElementByLinkText("linkText");
driver.findElementByName("elementName");
driver.findElementByPartialLinkText("partialText");
driver.findElementByTagName("elementTagName");
driver.findElementByXPath("xPath");

driver.findElement(By.className("className"));
driver.findElement(By.cssSelector(".className"));
driver.findElement(By.id("elementId"));
driver.findElement(By.linkText("linkText"));
driver.findElement(By.name("elementName"));
driver.findElement(By.partialLinkText("partialText"));
driver.findElement(By.tagName("elementTagName"));
driver.findElement(By.xpath("xPath"));

Finding a multiple elements with findElements*

driver.findElementsByClassName("className");
driver.findElementsByCssSelector(".className");
driver.findElementsById("elementId");
driver.findElementsByLinkText("linkText");
driver.findElementsByName("elementName");
driver.findElementsByPartialLinkText("partialText");
driver.findElementsByTagName("elementTagName");
driver.findElementsByXPath("xPath");

driver.findElements(By.className("className"));
driver.findElements(By.cssSelector(".className"));
driver.findElements(By.id("elementId"));
driver.findElements(By.linkText("linkText"));
driver.findElements(By.name("elementName"));
driver.findElements(By.partialLinkText("partialText"));
driver.findElements(By.tagName("elementTagName"));
driver.findElements(By.xpath("xPath"));

Upgrading dependencies

Check the subsections below to install Selenium 4 and have your project dependencies upgraded.

Java

The process of upgrading Selenium depends on which build tool is being used. We will cover the most common ones for Java, which are Maven and Gradle. The minimum Java version required is still 8.

Maven

<dependencies>
  <!-- more dependencies ... -->
  <dependency>
    <groupId>org.seleniumhq.selenium</groupId>
    <artifactId>selenium-java</artifactId>
    <version>3.141.59</version>
  </dependency>
  <!-- more dependencies ... -->
</dependencies>

<dependencies>
    <!-- more dependencies ... -->
    <dependency>
        <groupId>org.seleniumhq.selenium</groupId>
        <artifactId>selenium-java</artifactId>
        <version>4.4.0</version>
    </dependency>
    <!-- more dependencies ... -->
</dependencies>

After making the change, you could execute mvn clean compile on the same directory where the pom.xml file is.

Gradle

plugins {
    id 'java'
}
group 'org.example'
version '1.0-SNAPSHOT'
repositories {
    mavenCentral()
}
dependencies {
    testImplementation 'org.junit.jupiter:junit-jupiter-api:5.7.0'
    testRuntimeOnly 'org.junit.jupiter:junit-jupiter-engine:5.7.0'
    implementation group: 'org.seleniumhq.selenium', name: 'selenium-java', version: '3.141.59'
}
test {
    useJUnitPlatform()
}

plugins {
    id 'java'
}
group 'org.example'
version '1.0-SNAPSHOT'
repositories {
    mavenCentral()
}
dependencies {
    testImplementation 'org.junit.jupiter:junit-jupiter-api:5.7.0'
    testRuntimeOnly 'org.junit.jupiter:junit-jupiter-engine:5.7.0'
    implementation group: 'org.seleniumhq.selenium', name: 'selenium-java', version: '4.4.0'
}
test {
    useJUnitPlatform()
}

After making the change, you could execute ./gradlew clean build on the same directory where the build.gradle file is.

To check all the Java releases, you can head to MVNRepository.

C#

The place to get updates for Selenium 4 in C# is NuGet. Under the Selenium.WebDriver package you can get the instructions to update to the latest version. Inside of Visual Studio, through the NuGet Package Manager you can execute:

PM> Install-Package Selenium.WebDriver -Version 4.4.0

Python

The most important change to use Python is the minimum required version. Selenium 4 will require a minimum Python 3.7 or higher. More details can be found at the Python Package Index. To upgrade from the command line, you can execute:

pip install selenium==4.4.3

Ruby

The update details for Selenium 4 can be seen at the selenium-webdriver gem in RubyGems. To install the latest version, you can execute:

gem install selenium-webdriver

To add it to your Gemfile:

gem 'selenium-webdriver', '~> 4.4.0'

JavaScript

The selenium-webdriver package can be found at the Node package manager, npmjs. Selenium 4 can be found here. To install it, you could either execute:

npm install selenium-webdriver

Or, update your package.json and run npm install:

{
  "name": "selenium-tests",
  "version": "1.0.0",
  "dependencies": {
    "selenium-webdriver": "^4.4.0"
  }
}

Potential errors and deprecation messages

Here is a set of code examples that will help to overcome the deprecation messages you might encounter after upgrading to Selenium 4.

Java

Waits and Timeout

The parameters received in Timeout have switched from expecting (long time, TimeUnit unit) to expect (Duration duration).

driver.manage().timeouts().implicitlyWait(10, TimeUnit.SECONDS);
driver.manage().timeouts().setScriptTimeout(2, TimeUnit.MINUTES);
driver.manage().timeouts().pageLoadTimeout(10, TimeUnit.SECONDS);

driver.manage().timeouts().implicitlyWait(Duration.ofSeconds(10));
driver.manage().timeouts().scriptTimeout(Duration.ofMinutes(2));
driver.manage().timeouts().pageLoadTimeout(Duration.ofSeconds(10));

Waits are also expecting different parameters now. WebDriverWait is now expecting a Duration instead of a long for timeout in seconds and milliseconds. The withTimeout and pollingEvery utility methods from FluentWait have switched from expecting (long time, TimeUnit unit) to expect (Duration duration).

new WebDriverWait(driver, 3)
.until(ExpectedConditions.elementToBeClickable(By.cssSelector("#id")));

Wait<WebDriver> wait = new FluentWait<WebDriver>(driver)
  .withTimeout(30, TimeUnit.SECONDS)
  .pollingEvery(5, TimeUnit.SECONDS)
  .ignoring(NoSuchElementException.class);

new WebDriverWait(driver, Duration.ofSeconds(3))
  .until(ExpectedConditions.elementToBeClickable(By.cssSelector("#id")));

  Wait<WebDriver> wait = new FluentWait<WebDriver>(driver)
  .withTimeout(Duration.ofSeconds(30))
  .pollingEvery(Duration.ofSeconds(5))
  .ignoring(NoSuchElementException.class);

Merging capabilities is no longer changing the calling object

It was possible to merge a different set of capabilities into another set, and it was mutating the calling object. Now, the result of the merge operation needs to be assigned.

MutableCapabilities capabilities = new MutableCapabilities();
capabilities.setCapability("platformVersion", "Windows 10");
FirefoxOptions options = new FirefoxOptions();
options.setHeadless(true);
options.merge(capabilities);

MutableCapabilities capabilities = new MutableCapabilities();
capabilities.setCapability("platformVersion", "Windows 10");
FirefoxOptions options = new FirefoxOptions();
options.setHeadless(true);
options = options.merge(capabilities);

Firefox Legacy

Before GeckoDriver was around, the Selenium project had a driver implementation to automate Firefox (version <48). However, this implementation is not needed anymore as it does not work in recent versions of Firefox. To avoid major issues when upgrading to Selenium 4, the setLegacy option will be shown as deprecated. The recommendation is to stop using the old implementation and rely only on GeckoDriver. The following code will show the setLegacy line deprecated after upgrading.

FirefoxOptions options = new FirefoxOptions();
options.setLegacy(true);

BrowserType

The BrowserType interface has been around for a long time, however it is getting deprecated in favour of the new Browser interface.

MutableCapabilities capabilities = new MutableCapabilities();
capabilities.setCapability("browserVersion", "92");
capabilities.setCapability("browserName", BrowserType.FIREFOX);

MutableCapabilities capabilities = new MutableCapabilities();
capabilities.setCapability("browserVersion", "92");
capabilities.setCapability("browserName", Browser.FIREFOX);

C#

AddAdditionalCapability is deprecated

Instead of it, AddAdditionalOption is recommended. Here is an example showing this:

var browserOptions = new ChromeOptions();
browserOptions.PlatformName = "Windows 10";
browserOptions.BrowserVersion = "latest";
var cloudOptions = new Dictionary<string, object>();
browserOptions.AddAdditionalCapability("cloud:options", cloudOptions, true);

var browserOptions = new ChromeOptions();
browserOptions.PlatformName = "Windows 10";
browserOptions.BrowserVersion = "latest";
var cloudOptions = new Dictionary<string, object>();
browserOptions.AddAdditionalOption("cloud:options", cloudOptions);

Python

executable_path has been deprecated, please pass in a Service object

In Selenium 4, you’ll need to set the driver’s executable_path from a Service object to prevent deprecation warnings. (Or don’t set the path and instead make sure that the driver you need is on the System PATH.)

from selenium import webdriver
options = webdriver.ChromeOptions()
options.add_experimental_option("excludeSwitches", ["enable-automation"])
options.add_experimental_option("useAutomationExtension", False)
driver = webdriver.Chrome(executable_path=CHROMEDRIVER_PATH, options=options)

from selenium import webdriver
from selenium.webdriver.chrome.service import Service as ChromeService
options = webdriver.ChromeOptions()
options.add_experimental_option("excludeSwitches", ["enable-automation"])
options.add_experimental_option("useAutomationExtension", False)
service = ChromeService(executable_path=CHROMEDRIVER_PATH)
driver = webdriver.Chrome(service=service, options=options)

Summary

We went through the major changes to be taken into consideration when upgrading to Selenium 4. Covering the different aspects to cover when test code is prepared for the upgrade, including suggestions on how to prevent potential issues that can show up when using the new version of Selenium. To finalize, we also covered a set of possible issues that you can bump into after upgrading, and we shared potential fixes for those issues.

This was originally posted at https://saucelabs.com/resources/articles/how-to-upgrade-to-selenium-4

2 - Driver Sessions

Starting and stopping a session is for opening and closing a browser.

Creating Sessions

Creating a new session corresponds with the W3C command for New session

The session is created automatically by initializing a new Driver class object.

Each language allows a session to be created with arguments from one of these classes (or equivalent):

• Options to describe the kind of session you want; default values are used for local, but this is required for remote
• Some form of CommandExecutor (the implementation varies between languages)
• Listeners

Local Driver

The primary unique argument for starting a local driver includes information about starting the required driver service on the local machine.

• Service object applies only to local drivers and provides information about the browser driver

Remote Driver

The primary unique argument for starting a remote driver includes information about where to execute the code. Read the details in the Remote Driver Section

Quitting Sessions

Quitting a session corresponds to W3C command for Deleting a Session.

Important note: the quit method is different from the close method, and it is recommended to always use quit to end the session

2.1 - Browser Options

In Selenium 3, capabilities were defined in a session by using Desired Capabilities classes. As of Selenium 4, you must use the browser options classes. For remote driver sessions, a browser options instance is required as it determines which browser will be used.

These options are described in the w3c specification for Capabilities.

Each browser has custom options that may be defined in addition to the ones defined in the specification.

browserName

This capability is used to set the browserName for a given session. If the specified browser is not installed at the remote end, the session creation will fail.

browserVersion

This capability is optional, this is used to set the available browser version at remote end. For Example, if ask for Chrome version 75 on a system that only has 80 installed, the session creation will fail.

pageLoadStrategy

Three types of page load strategies are available.

The page load strategy queries the document.readyState as described in the table below:

The document.readyState property of a document describes the loading state of the current document.

When navigating to a new page via URL, by default, WebDriver will hold off on completing a navigation method (e.g., driver.navigate().get()) until the document ready state is complete. This does not necessarily mean that the page has finished loading, especially for sites like Single Page Applications that use JavaScript to dynamically load content after the Ready State returns complete. Note also that this behavior does not apply to navigation that is a result of clicking an element or submitting a form.

If a page takes a long time to load as a result of downloading assets (e.g., images, css, js) that aren’t important to the automation, you can change from the default parameter of normal to eager or none to speed up the session. This value applies to the entire session, so make sure that your waiting strategy is sufficient to minimize flakiness.

normal (default)

WebDriver waits until the load event fire is returned.

• Java
• Python
• CSharp
• Ruby
• JavaScript
• Kotlin

import org.openqa.selenium.PageLoadStrategy;
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.chrome.ChromeOptions;
import org.openqa.selenium.chrome.ChromeDriver;

public class pageLoadStrategy {
  public static void main(String[] args) {
    ChromeOptions chromeOptions = new ChromeOptions();
    chromeOptions.setPageLoadStrategy(PageLoadStrategy.NORMAL);
    WebDriver driver = new ChromeDriver(chromeOptions);
    try {
      // Navigate to Url
      driver.get("https://google.com");
    } finally {
      driver.quit();
    }
  }
}

from selenium import webdriver
from selenium.webdriver.chrome.options import Options
options = Options()
options.page_load_strategy = 'normal'
driver = webdriver.Chrome(options=options)
driver.get("http://www.google.com")
driver.quit()

using OpenQA.Selenium;
using OpenQA.Selenium.Chrome;

namespace pageLoadStrategy {
  class pageLoadStrategy {
    public static void Main(string[] args) {
      var chromeOptions = new ChromeOptions();
      chromeOptions.PageLoadStrategy = PageLoadStrategy.Normal;
      IWebDriver driver = new ChromeDriver(chromeOptions);
      try {
        driver.Navigate().GoToUrl("https://example.com");
      } finally {
        driver.Quit();
      }
    }
  }
}

require 'selenium-webdriver'
options = Selenium::WebDriver::Options.chrome
options.page_load_strategy = :normal

driver = Selenium::WebDriver.for :chrome, options: options
driver.get('https://www.google.com')

    it('Navigate using normal page loading strategy', async function () {
      let driver = await env
        .builder()
        .setChromeOptions(options.setPageLoadStrategy('normal'))
        .build();

      await driver.get('https://www.google.com');

import org.openqa.selenium.PageLoadStrategy
import org.openqa.selenium.chrome.ChromeDriver
import org.openqa.selenium.chrome.ChromeOptions

fun main() {
  val chromeOptions = ChromeOptions()
  chromeOptions.setPageLoadStrategy(PageLoadStrategy.NORMAL)
  val driver = ChromeDriver(chromeOptions)
  try {
    driver.get("https://www.google.com")
  }
  finally {
    driver.quit()
  }
}

eager

WebDriver waits until DOMContentLoaded event fire is returned.

• Java
• Python
• CSharp
• Ruby
• JavaScript
• Kotlin

import org.openqa.selenium.PageLoadStrategy;
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.chrome.ChromeOptions;
import org.openqa.selenium.chrome.ChromeDriver;

public class pageLoadStrategy {
  public static void main(String[] args) {
    ChromeOptions chromeOptions = new ChromeOptions();
    chromeOptions.setPageLoadStrategy(PageLoadStrategy.EAGER);
    WebDriver driver = new ChromeDriver(chromeOptions);
    try {
      // Navigate to Url
      driver.get("https://google.com");
    } finally {
      driver.quit();
    }
  }
}

from selenium import webdriver
from selenium.webdriver.chrome.options import Options
options = Options()
options.page_load_strategy = 'eager'
driver = webdriver.Chrome(options=options)
driver.get("http://www.google.com")
driver.quit()

using OpenQA.Selenium;
using OpenQA.Selenium.Chrome;

namespace pageLoadStrategy {
  class pageLoadStrategy {
    public static void Main(string[] args) {
      var chromeOptions = new ChromeOptions();
      chromeOptions.PageLoadStrategy = PageLoadStrategy.Eager;
      IWebDriver driver = new ChromeDriver(chromeOptions);
      try {
        driver.Navigate().GoToUrl("https://example.com");
      } finally {
        driver.Quit();
      }
    }
  }
}

require 'selenium-webdriver'
options = Selenium::WebDriver::Options.chrome
options.page_load_strategy = :eager

driver = Selenium::WebDriver.for :chrome, options: options
driver.get('https://www.google.com')

    it('Navigate using eager page loading strategy', async function () {
      let driver = await env
        .builder()
        .setChromeOptions(options.setPageLoadStrategy('eager'))
        .build();

      await driver.get('https://www.google.com');

import org.openqa.selenium.PageLoadStrategy
import org.openqa.selenium.chrome.ChromeDriver
import org.openqa.selenium.chrome.ChromeOptions

fun main() {
  val chromeOptions = ChromeOptions()
  chromeOptions.setPageLoadStrategy(PageLoadStrategy.EAGER)
  val driver = ChromeDriver(chromeOptions)
  try {
    driver.get("https://www.google.com")
  }
  finally {
    driver.quit()
  }
}

none

WebDriver only waits until the initial page is downloaded.

• Java
• Python
• CSharp
• Ruby
• JavaScript
• Kotlin

import org.openqa.selenium.PageLoadStrategy;
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.chrome.ChromeOptions;
import org.openqa.selenium.chrome.ChromeDriver;

public class pageLoadStrategy {
  public static void main(String[] args) {
    ChromeOptions chromeOptions = new ChromeOptions();
    chromeOptions.setPageLoadStrategy(PageLoadStrategy.NONE);
    WebDriver driver = new ChromeDriver(chromeOptions);
    try {
      // Navigate to Url
      driver.get("https://google.com");
    } finally {
      driver.quit();
    }
  }
}

from selenium import webdriver
from selenium.webdriver.chrome.options import Options
options = Options()
options.page_load_strategy = 'none'
driver = webdriver.Chrome(options=options)
driver.get("http://www.google.com")
driver.quit()

using OpenQA.Selenium;
using OpenQA.Selenium.Chrome;

namespace pageLoadStrategy {
  class pageLoadStrategy {
    public static void Main(string[] args) {
      var chromeOptions = new ChromeOptions();
      chromeOptions.PageLoadStrategy = PageLoadStrategy.None;
      IWebDriver driver = new ChromeDriver(chromeOptions);
      try {
        driver.Navigate().GoToUrl("https://example.com");
      } finally {
        driver.Quit();
      }
    }
  }
}

require 'selenium-webdriver'
options = Selenium::WebDriver::Options.chrome
options.page_load_strategy = :none

driver = Selenium::WebDriver.for :chrome, options: options
driver.get('https://www.google.com')

    it('Navigate using none page loading strategy', async function () {
      let driver = await env
        .builder()
        .setChromeOptions(options.setPageLoadStrategy('none'))
        .build();

      await driver.get('https://www.google.com');

import org.openqa.selenium.PageLoadStrategy
import org.openqa.selenium.chrome.ChromeDriver
import org.openqa.selenium.chrome.ChromeOptions

fun main() {
  val chromeOptions = ChromeOptions()
  chromeOptions.setPageLoadStrategy(PageLoadStrategy.NONE)
  val driver = ChromeDriver(chromeOptions)
  try {
    driver.get("https://www.google.com")
  }
  finally {
    driver.quit()
  }
}

platformName

This identifies the operating system at the remote-end, fetching the platformName returns the OS name.

In cloud-based providers, setting platformName sets the OS at the remote-end.

acceptInsecureCerts

This capability checks whether an expired (or) invalid TLS Certificate is used while navigating during a session.

If the capability is set to false, an insecure certificate error will be returned as navigation encounters any domain certificate problems. If set to true, invalid certificate will be trusted by the browser.

All self-signed certificates will be trusted by this capability by default. Once set, acceptInsecureCerts capability will have an effect for the entire session.

timeouts

A WebDriver session is imposed with a certain session timeout interval, during which the user can control the behaviour of executing scripts or retrieving information from the browser.

Each session timeout is configured with combination of different timeouts as described below:

Script Timeout

Specifies when to interrupt an executing script in a current browsing context. The default timeout 30,000 is imposed when a new session is created by WebDriver.

Page Load Timeout

Specifies the time interval in which web page needs to be loaded in a current browsing context. The default timeout 300,000 is imposed when a new session is created by WebDriver. If page load limits a given/default time frame, the script will be stopped by TimeoutException.

Implicit Wait Timeout

This specifies the time to wait for the implicit element location strategy when locating elements. The default timeout 0 is imposed when a new session is created by WebDriver.

unhandledPromptBehavior

Specifies the state of current session’s user prompt handler. Defaults to dismiss and notify state

User Prompt Handler

This defines what action must take when a user prompt encounters at the remote-end. This is defined by unhandledPromptBehavior capability and has the following states:

• dismiss
• accept
• dismiss and notify
• accept and notify
• ignore

setWindowRect

Indicates whether the remote end supports all of the resizing and repositioning commands.

strictFileInteractability

This new capability indicates if strict interactability checks should be applied to input type=file elements. As strict interactability checks are off by default, there is a change in behaviour when using Element Send Keys with hidden file upload controls.

proxy

A proxy server acts as an intermediary for requests between a client and a server. In simple, the traffic flows through the proxy server on its way to the address you requested and back.

A proxy server for automation scripts with Selenium could be helpful for:

• Capture network traffic
• Mock backend calls made by the website
• Access the required website under complex network topologies or strict corporate restrictions/policies.

If you are in a corporate environment, and a browser fails to connect to a URL, this is most likely because the environment needs a proxy to be accessed.

Selenium WebDriver provides a way to proxy settings:

• Java
• Python
• CSharp
• Ruby
• JavaScript
• Kotlin

import org.openqa.selenium.Proxy;
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.chrome.ChromeDriver;
import org.openqa.selenium.chrome.ChromeOptions;

public class proxyTest {
public static void main(String[] args) {
Proxy proxy = new Proxy();
proxy.setHttpProxy("<HOST:PORT>");
ChromeOptions options = new ChromeOptions();
options.setCapability("proxy", proxy);
WebDriver driver = new ChromeDriver(options);
driver.get("https://www.google.com/");
driver.manage().window().maximize();
driver.quit();
}
}

from selenium import webdriver

PROXY = "<HOST:PORT>"
webdriver.DesiredCapabilities.FIREFOX['proxy'] = {
"httpProxy": PROXY,
"ftpProxy": PROXY,
"sslProxy": PROXY,
"proxyType": "MANUAL",

}

with webdriver.Firefox() as driver:
driver.get("https://selenium.dev")

using OpenQA.Selenium;
using OpenQA.Selenium.Chrome;

public class ProxyTest{
public static void Main() {
ChromeOptions options = new ChromeOptions();
Proxy proxy = new Proxy();
proxy.Kind = ProxyKind.Manual;
proxy.IsAutoDetect = false;
proxy.SslProxy = "<HOST:PORT>";
options.Proxy = proxy;
options.AddArgument("ignore-certificate-errors");
IWebDriver driver = new ChromeDriver(options);
driver.Navigate().GoToUrl("https://www.selenium.dev/");
}
}

proxy = Selenium::WebDriver::Proxy.new(http: '<HOST:PORT>')
cap   = Selenium::WebDriver::Remote::Capabilities.chrome(proxy: proxy)

driver = Selenium::WebDriver.for(:chrome, capabilities: cap)
driver.get('http://google.com')

let webdriver = require('selenium-webdriver');
let chrome = require('selenium-webdriver/chrome');
let proxy = require('selenium-webdriver/proxy');
let opts = new chrome.Options();

(async function example() {
opts.setProxy(proxy.manual({http: '<HOST:PORT>'}));
let driver = new webdriver.Builder()
.forBrowser('chrome')
.setChromeOptions(opts)
.build();
try {
await driver.get("https://selenium.dev");
}
finally {
await driver.quit();
}
}());

import org.openqa.selenium.Proxy
import org.openqa.selenium.WebDriver
import org.openqa.selenium.chrome.ChromeDriver
import org.openqa.selenium.chrome.ChromeOptions

class proxyTest {
fun main() {

        val proxy = Proxy()
        proxy.setHttpProxy("<HOST:PORT>")
        val options = ChromeOptions()
        options.setCapability("proxy", proxy)
        val driver: WebDriver = ChromeDriver(options)
        driver["https://www.google.com/"]
        driver.manage().window().maximize()
        driver.quit()
    }
}

2.2 - Command executors

These allow you to set various parameters for the HTTP library

2.3 - Command Listeners

These allow you to execute custom actions in every time specific Selenium commands are sent

2.4 - Browser Service

The Service classes are for managing the starting and stopping of drivers. They are not applicable in Remote Drivers.

• Location of the driver
• port to use
• command line arguments to use

2.5 - Remote WebDriver

You can use WebDriver remotely the same way you would use it locally. The primary difference is that a remote WebDriver needs to be configured so that it can run your tests on a separate machine.

A remote WebDriver is composed of two pieces: a client and a server. The client is your WebDriver test and the server is simply a Java servlet, which can be hosted in any modern JEE app server.

To run a remote WebDriver client, we first need to connect to the RemoteWebDriver. We do this by pointing the URL to the address of the server running our tests. In order to customize our configuration, we set desired capabilities. Below is an example of instantiating a remote WebDriver object pointing to our remote web server, www.example.com, running our tests on Firefox.

• Java
• Python
• CSharp
• Ruby
• JavaScript
• Kotlin

FirefoxOptions firefoxOptions = new FirefoxOptions();
WebDriver driver = new RemoteWebDriver(new URL("http://www.example.com"), firefoxOptions);
driver.get("http://www.google.com");
driver.quit();
  

from selenium import webdriver

firefox_options = webdriver.FirefoxOptions()
driver = webdriver.Remote(
    command_executor='http://www.example.com',
    options=firefox_options
)
driver.get("http://www.google.com")
driver.quit() 
  

 FirefoxOptions firefoxOptions = new FirefoxOptions();
 IWebDriver driver = new RemoteWebDriver(new Uri("http://www.example.com"), firefoxOptions);
 driver.Navigate().GoToUrl("http://www.google.com");
 driver.Quit();