Can you spot the difference?

Everything you need to know about Visual Regression Testing in 2022

David Xu
14 min readMar 18, 2022

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Introduction

Visual Regression Testing has come a long way and it’s growing increasingly popular. Could 2022 be the year where it really takes off? And if you want to implement it in your project, what tools do you choose? Fear not, for in this article we will give you a comprehensive overview of all there is to know about Visual Regression Testing.

What is Automated Visual Regression testing?

Visual testing is about checking for unintended changes to an application’s look and feel.

At a high level, automated visual regression testing follows the following steps:

  • Step 1: Open a browser
  • Step 2: Simulate user interaction on the app
  • Step 3: Take screenshots of the app
  • Step 4: Compare screenshots with the stored baseline image
  • Step 5: Present comparison results to dev/tester

Examples of things visual regression testing tests include checking for an app’s background colour, element positions, content overflows and animation.

What makes visual testing difficult to automate?

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David Xu
David Xu

Written by David Xu

Code monkey specializing in React.js

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