What is Selenium Webdriver Architecture


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What is Selenium?

Selenium serves as a versatile automation testing framework, designed specifically for web application testing. It’s open-source, allowing automation testers to write test scripts in various programming languages like Python, Java, and more.

Selenium offers support for multiple web browsers, including Safari, Firefox, Opera, and Chrome. Test scripts crafted in different programming languages can be seamlessly executed. It also excels in cross-platform testing, enabling simultaneous test case runs across Windows, Mac OS, Linux, and Solaris platforms. As a result, Selenium has risen to prominence as a top choice for creating robust and flexible test automation suites.

In today’s dynamic web application landscape, where numerous applications are continually deployed, testing teams need a reliable and user-friendly framework to ensure these applications perform optimally beyond the development environment. Selenium’s comprehensive suite has made the deployment of countless applications more manageable. To appreciate how this is achieved, it’s essential to delve into the architecture of selenium webdriver.


What is Mean By Selenium Architecture?

The Selenium Webdriver Architecture framework consists of the following key elements:

  1. Selenium Integrated Development Environment (Selenium IDE)
  2. Selenium Remote Control (Selenium RC)
  3. Selenium WebDriver
  4. Selenium Grid

Now let’s understand all in detail:

1. Selenium Integrated Development Environment (Selenium IDE)

Selenium IDE, short for Selenium Integrated Development Environment, was originally developed by Shinya Kasatani from Japan and has undergone subsequent enhancements. It functions as a Firefox plugin, enabling developers to effortlessly record and replay scripts. A noteworthy benefit of Selenium IDE is its independence from programming expertise; basic knowledge of HTML and DOM is adequate. Typically, Selenium IDE serves as a prototyping tool due to its user-friendly simplicity.

2. Selenium Remote Control (Selenium RC)

Selenium RC, short for Selenium Remote Control and occasionally known as Selenium 1, was the pioneering web automation testing framework and a preferred choice for a considerable duration. This framework is powered by JavaScript for automation tasks and provides support for a range of programming languages like Python, Perl, Ruby, Java, C# and PHP. Selenium RC is compatible with nearly all major web browsers. It’s important to highlight that Selenium RC is no longer officially supported as it has been deprecated.


3. Selenium WebDriver

Selenium WebDriver is an automation framework designed for automating user interactions with modern web browsers, utilizing a set of open-source APIs for browser communication. It employs a browser-centric approach for implementation.

Operating systems compatible with Selenium WebDriver include Windows, Mac OS, Linux and Solaris. It offers support for multiple programming languages like Java, C#, PHP, Python, Perl, Ruby and JavaScript. Selenium WebDriver extends its browser support to Mozilla Firefox, Internet Explorer, Google Chrome (version 12.0.712.0 and above), Safari, Opera (version 11.5 and above) as well as Android, iOS, and HtmlUnit (version 2.9 and above).

The webdriver architecture in selenium comprises the following components:

  • Selenium Client Library: This component consists of language libraries for Java, Ruby, Python, and other supported languages.
  • JSON Wire Protocol Over HTTP Client: JSON (Javascript Object Notation) is vital for data exchange between the server and client in Selenium’s automation process.
  • Browser Drivers: These drivers facilitate communication between Selenium WebDriver and specific browsers, maintaining privacy concerning the browser’s internal workings.
  • Browsers: Supported browsers include Firefox, Safari, Chrome, and more.

For a visual representation of the Selenium WebDriver architecture, please refer to the provided Selenium WebDriver Architecture Diagram.


4. Selenium Grid

Selenium Grid, when combined with Selenium RC, allows the simultaneous execution of tests across multiple machines and their associated browsers. Its functionality relies on the comprehensive browser and operating system support within the Selenium framework. As Selenium supports a wide array of browsers and operating systems, Selenium Grid can efficiently run multiple tests concurrently on various machines, each with different browsers.

What are The Top Features of Selenium

Key features of the Selenium suite include:

  1. Cross-Browser Testing: Selenium permits testing a single website using the same scripts and code across different browsers.
  2. Parallel Testing: It enables the execution of scripts on one or multiple browsers simultaneously.
  3. Modern Technology Support: Selenium is versatile allowing testing of various applications, regardless of the underlying technology.
  4. Web Page Automation: Selenium can automate web pages, even those with content that changes based on user interactions.

How to Learn Selenium Webdriver

Consider enrolling in EduBridge’s Software Testing Certification Program, where you’ll gain expertise in automating web applications using Selenium WebDriver. Alternatively, you can explore the Advanced Certification Program in Software Testing in collaboration with IBM, offering a comprehensive software testing course. This program covers essential tools and techniques, taking you from a foundational level to mastery, with hands-on business assignments to prepare you for the industry.


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