Getting Started with Selenium Grid Browser Testing

Getting Started with Selenium Grid Browser Testing

When performing cross browser testing manually, one roadblock that you might have hit during the verification phase is testing the functionalities of your web application/web product across different operating systems / devices / browsers are the test coverage with respect to time. With thousands of browsers available in the market, automation testing for validating cross browser compatibility has become a necessity.

When performing cross browser testing manually, one roadblock that you might have hit during the verification phase is testing the functionalities of your web application/web product across different operating systems / devices / browsers are the test coverage with respect to time. With thousands of browsers available in the market, automation testing for validating cross browser compatibility has become a necessity.

Referring to automation and considering our love for open-source softwares, it is inevitable to turn a blind eye from one of the most renowned test automation framework called “Selenium”. We have covered automation testing with Selenium WebDriver for cross browser testing previously on our blog where we discussed different variants of Selenium i.e IDE, RC, WebDriver etc and ran our first automation script.

In that article we emphasized the limitation of working with Local Selenium WebDriver. With ‘Local Selenium WebDriver’, you can perform browser compatibility testing ‘only’ on the browsers that are installed on the machine (where testing is performed) i.e. your testing effort is limited to only a certain combination of (device + operating system + browser).

Verification of your web-application/web product with the ‘local’ version of the Selenium WebDriver is not a scalable approach. Some of the problems that you encounter with this kind of setup are:

  • How to verify functionalities on platforms/operating systems which are not installed on the machine? i.e. even if it is a dual-boot machine, you will still have the problem.
  • How to perform automated cross browser testing on browsers with different versions? e.g. your machine can have Firefox version 64.0, but you want to perform the testing on Firefox version 36.0.
  • How to perform cross browser testing of a website on multiple number of browsers? e.g. your machine may not have Opera installed but for the purpose of testing, you would need to install these browsers (unnecessary disk space consumption).
  • How to attain the best performance i.e. parallelization while performing the tests on local machine?

Though local Selenium WebDriver is ideal for testing on a smaller scale, the necessary amount of ‘scalability’ & ‘performance’ can be achieved after you setup a ‘Selenium Grid’.

This article is a Selenium Grid tutorial where you would realize how web-developers and software testers leverage the power of the Selenium Grid setup to perform automated cross browser testing. I will demonstrate you with an example scenario.

We will be making use of the following languages, frameworks & tools (IDE) to write better automation code.

  • Programming Language – Python (Download Link)
  • Test framework – pytest
  • Web application framework – Selenium
  • Integrated Development Environment – Eclipse version 4.90 (Download Link), PyCharm – Community Edition (Download Link)

What Is Selenium Grid?

Selenium Grid is a testing tool (which is a part of the Selenium Suite) that is based on the ‘client-server’ architecture. In Selenium Grid terminology, Client machine is termed as ‘Hub’ and server(s) are termed as ‘Nodes’.

Selenium Grid setup allows you to execute cross browser testing through a variety of different machines across different browsers (as well as different versions of browsers) & different operating systems. Hence, it brings the require amount of ‘parallelism’ & ‘distribution’ to your test execution environment.

A Selenium Grid setup can have only one Hub and ‘n’ number of nodes. The primary job of the ‘hub machine’ is to distribute the test case supplied to the ‘node machine’ which matches the capabilities/requirements required for executing the test case for performing cross browser testing. We would discuss more Hub & Node (which are the core components for the setup of Selenium Grid infrastructure) in further sections.

There are two versions of Selenium Grid available, namely Selenium Grid 2.0 & Selenium Grid 1.0. Selenium Grid 2.0 is most popular amongst automation testers since it supports Selenium RC (Remote Control) and Selenium WebDriver scripts.

Why Selenium Grid Setup Is A Smart Call To Make?

There are a number of benefits of Selenium Grid setup. Here, we have a look at some of the top advantages of Selenium Grid setup as a part of your test execution strategy for performing cross browser testing.

  • Reduced Execution Time – Selenium Grid setup can be used to execute multiple test cases on different browsers (and browser versions) and operating systems. You can also run multiple instances of Selenium RC along with the test configuring combinations. As the tests are executed in ‘parallel’ (scattered across different machines), the overall time consumed for cross browser testing trims down significantly.
  • Scalable & Maintainable – As we know, Selenium Grid setup reduces the amount of time required for ‘parallel testing’ by a huge margin, the entire solution is highly scalable. If you want to perform testing on a ‘new node’ (which could be Operating System/Browser), all it needs are few minor tweaks in the code with respect to the addition of capabilities, and your solution for the new node is ready.
  • Perform Multi-Combination Testing – Using the Hub & Node feature of Selenium Grid setup, you can perform multi-OS, multi-browser, and multi-device verification of your source code.

selenium selenium-grid test-automation tutorial testing selenium-webdriver good-company qa

Bootstrap 5 Complete Course with Examples

Bootstrap 5 Tutorial - Bootstrap 5 Crash Course for Beginners

Nest.JS Tutorial for Beginners

Hello Vue 3: A First Look at Vue 3 and the Composition API

Building a simple Applications with Vue 3

Deno Crash Course: Explore Deno and Create a full REST API with Deno

How to Build a Real-time Chat App with Deno and WebSockets

Convert HTML to Markdown Online

HTML entity encoder decoder Online

Why Selenium Grid Is Ideal For Automated Browser Testing?

Selenium Grid and Selenium test automation are the ideal choices for performing automated browser testing, find out why in this blog.

How To Automate Calendar In Selenium WebDriver For Automation Testing?

How To Automate Calendar In Selenium WebDriver For Automation Testing? In this Selenium testing tutorial, I will take a deep dive to automate calendar using Selenium WebDriver for popular calendar controls. You can skip to any sub-section depending on your understanding about calendar controls. Below are the sub-topics covered this Selenium testing tutorial: ​ * Types Of Calendar Controls * How To Automate Calendar In Selenium WebDriver For Automation Testing? * Handling ‘JQuery Calendar’ In An IFRAME * Handling ‘JQuery Calendar’ With Dates From Multiple Months * Handling Kendo Calendar For Selenium test automation * Browser Compatibility Issues With Calendars * Using Online Selenium Grid For Exhaustive Verification Of ‘Calendar Controls’ In this Selenium testing tutorial, I will take a deep dive to automate calendar using Selenium WebDriver for popular calendar controls. You can skip to any sub-section depending on your understanding about calendar controls.

Selenium Grid Tutorial: All About Setting Up A Selenium Grid | LambdaTest

We will set up a Selenium Grid for parallel execution to perform automated cross browser testing on different browsers i.e. Chrome, IE, Firefox, simultaneously.

Top 10 Automation Testing Tools: 2020 Edition

The demand for delivering quality software faster — or “Quality at Speed” — requires organizations to search for solutions in Agile, continuous integration (CI), and DevOps methodologies. Test automation is an essential part of these aspects.

Measure Your Test Automation Maturity

Feel free to grade your team's maturity through my research. By the end of the article, you'll have your Test Automation Maturity Level.